diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..a4ca4107
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,80 @@
+version: 2
+
+updates:
+  # Rust dependencies (Soroban contracts)
+  - package-ecosystem: "cargo"
+    directory: "/smart-contract"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+
+    open-pull-requests-limit: 10
+
+    reviewers:
+      - "Lynndabel"
+
+    assignees:
+      - "Lynndabel"
+
+    commit-message:
+      prefix: "deps"
+      include: "scope"
+
+    versioning-strategy: increase
+
+    labels:
+      - "dependencies"
+      - "rust"
+
+    groups:
+      rust-dependencies:
+        patterns:
+          - "*"
+
+  # Frontend dependencies (Next.js / TypeScript)
+  - package-ecosystem: "npm"
+    directory: "/frontend"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "09:00"
+
+    open-pull-requests-limit: 10
+
+    reviewers:
+      - "Lynndabel"
+
+    assignees:
+      - "Lynndabel"
+
+    commit-message:
+      prefix: "deps"
+      include: "scope"
+
+    versioning-strategy: increase
+
+    labels:
+      - "dependencies"
+      - "javascript"
+
+    groups:
+      frontend-dependencies:
+        patterns:
+          - "*"
+
+    ignore:
+      # Ignore risky React major updates
+      - dependency-name: "react"
+        update-types:
+          - "version-update:semver-major"
+
+      - dependency-name: "react-dom"
+        update-types:
+          - "version-update:semver-major"
+
+      # Ignore Soroban SDK updates requiring manual testing
+      - dependency-name: "@stellar/*"
+        update-types:
+          - "version-update:semver-major"
+          - "version-update:semver-minor"
diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
new file mode 100644
index 00000000..181dda36
--- /dev/null
+++ b/.github/pull_request_template.md
@@ -0,0 +1,109 @@
+## Description
+<!-- A clear and concise description of what this PR does and why it is needed -->
+
+## Type of Change
+<!-- Mark with an `x` the categories that apply -->
+- [ ] 🐛 Bug fix (non-breaking change that fixes an issue)
+- [ ] ✨ New feature (non-breaking change that adds functionality)
+- [ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] 🔧 Code refactor (no functional changes)
+- [ ] 📚 Documentation update
+- [ ] 🧪 Tests (adding or updating tests)
+- [ ] 🔒 Security (security-related changes)
+- [ ] 🚀 Performance (performance-related changes)
+- [ ] 🎨 UI/UX (user interface changes)
+- [ ] 🛠️ DevOps (deployment, CI/CD, infrastructure changes)
+
+## Changes Made
+<!-- List the key changes this PR introduces -->
+
+### Code Changes
+<!-- Describe the technical implementation -->
+
+### Documentation Updates
+<!-- Any documentation that needs to be updated -->
+
+### Database/Schema Changes
+<!-- Any database or schema migrations -->
+
+## Testing
+<!-- How has this been tested? -->
+
+### Manual Testing
+<!-- Describe manual testing performed -->
+
+### Automated Tests
+<!-- What tests were added/updated? -->
+
+- [ ] Unit tests pass
+- [ ] Integration tests pass
+- [ ] E2E tests pass (if applicable)
+- [ ] Performance tests pass (if applicable)
+
+### Test Coverage
+<!-- Does this change affect test coverage? -->
+
+## Screenshots/Videos (UI Changes)
+<!-- Add screenshots/videos for any UI changes -->
+<!-- Delete this section if not applicable -->
+
+| Before | After |
+|--------|-------|
+| <!-- Screenshot --> | <!-- Screenshot --> |
+
+## Breaking Changes
+<!-- Does this PR introduce any breaking changes? -->
+<!-- If yes, describe the impact and migration path -->
+
+## Checklist
+<!-- Mark with an `x` all that apply -->
+
+### Code Quality
+- [ ] Code follows project style guidelines
+- [ ] Code is self-documenting or properly commented
+- [ ] No console.log statements or debugger breakpoints left
+- [ ] No unused imports or variables
+- [ ] Code passes linting checks
+
+### Testing
+- [ ] Unit tests added/updated for new functionality
+- [ ] Integration tests added/updated if needed
+- [ ] Manual testing completed
+- [ ] Edge cases considered and tested
+- [ ] Tests pass locally
+
+### Documentation
+- [ ] README updated if needed
+- [ ] API documentation updated if needed
+- [ ] Inline code documentation added/updated
+- [ ] Comments added for complex logic
+
+### Security
+- [ ] Security implications reviewed
+- [ ] No sensitive data exposed
+- [ ] Input validation added where needed
+- [ ] Authentication/authorization considered
+
+### Performance
+- [ ] Performance impact assessed
+- [ ] No performance regressions introduced
+- [ ] Bundle size checked (frontend)
+- [ ] Database queries optimized (backend)
+
+### Deployment
+- [ ] Environment variables documented
+- [ ] Database migrations included
+- [ ] Backward compatibility maintained
+- [ ] Rollback plan considered
+
+### Legal/Compliance
+- [ ] DCO (Developer Certificate of Origin) signed
+- [ ] License headers added to new files
+- [ ] Third-party dependencies reviewed
+- [ ] GDPR/privacy implications considered
+
+## Related Issues
+<!-- Link any related issues, e.g. "Closes #123", "Fixes #456" -->
+
+## Additional Context
+<!-- Any other context or information about this PR -->
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 00000000..4081a7d8
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,225 @@
+name: CI
+on:
+  push:
+    branches: [ main, develop ]
+  pull_request:
+    branches: [ main, develop ]
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  rust-tests:
+    name: Rust Tests & Quality
+    runs-on: ubuntu-latest
+    env:
+      STELLAR_CLI_VERSION: 23.4.0
+    defaults:
+      run:
+        working-directory: ./smart-contract
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown, wasm32v1-none
+
+      - name: Ensure wasm32v1-none target is available
+        run: rustup target add wasm32v1-none
+
+      # Use the official Stellar CLI GitHub Action (v23.4.0)
+      # Replaces the old manual soroban-cli curl install
+      - name: Install Stellar CLI
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          mkdir -p "$HOME/.local/bin"
+
+          arch="$(uname -m)"
+          case "$arch" in
+            x86_64) asset_arch="x86_64" ;;
+            aarch64|arm64) asset_arch="aarch64" ;;
+            *) echo "Unsupported architecture: $arch"; exit 1 ;;
+          esac
+
+          version="${STELLAR_CLI_VERSION}"
+          base_url="https://github.com/stellar/stellar-cli/releases/download/v${version}"
+
+          urls=(
+            "${base_url}/stellar-cli-${version}-${asset_arch}-unknown-linux-gnu.tar.gz"
+            "${base_url}/stellar-cli-${version}-${asset_arch}-unknown-linux-musl.tar.gz"
+          )
+
+          success="false"
+          for url in "${urls[@]}"; do
+            echo "Attempting download: ${url}"
+            if curl -fL --retry 6 --retry-all-errors --retry-delay 5 -o stellar-cli.tar.gz "${url}"; then
+              success="true"
+              break
+            fi
+          done
+
+          if [ "$success" != "true" ]; then
+            echo "Failed to download stellar-cli v${version} from GitHub releases."
+            exit 1
+          fi
+
+          tmpdir="$(mktemp -d)"
+          tar -xzf stellar-cli.tar.gz -C "$tmpdir"
+          stellar_path="$(find "$tmpdir" -type f -name stellar | head -n 1)"
+          if [ -z "$stellar_path" ]; then
+            echo "Could not find 'stellar' binary in downloaded archive."
+            exit 1
+          fi
+          mv "$stellar_path" "$HOME/.local/bin/stellar"
+          chmod +x "$HOME/.local/bin/stellar"
+
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+          stellar --version
+
+      - name: Cache Cargo registry
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-registry-
+
+      - name: Cache Cargo build
+        uses: actions/cache@v4
+        with:
+          # Fixed: scoped to actual target dir relative to repo root,
+          # not the working-directory (which would resolve incorrectly)
+          path: smart-contract/target
+          key: ${{ runner.os }}-cargo-build-${{ hashFiles('**/Cargo.lock') }}
+          restore-keys: |
+            ${{ runner.os }}-cargo-build-
+
+      - name: Check formatting
+        run: cargo fmt --all -- --check
+
+      - name: Run clippy
+        run: cargo clippy --all-targets --all-features -- -D warnings
+
+      - name: Run tests
+        run: cargo test --release --all-features
+
+      # Use stellar contract build instead of raw cargo build --target wasm32
+      # This ensures proper metadata, optimizer flags, and correct wasm output paths
+      - name: Build WASM contracts
+        run: stellar contract build
+
+      - name: Upload WASM artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: wasm-artifacts
+          path: smart-contract/target/wasm32-unknown-unknown/release/*.wasm
+          retention-days: 7
+
+  frontend-tests:
+    name: Frontend Tests & Quality
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./frontend
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: |
+          npm ci
+          npm install @rollup/rollup-linux-x64-gnu --save-optional
+          npm install lightningcss-linux-x64-gnu --save-optional
+
+      - name: Run npm audit
+        run: npm audit --audit-level=moderate
+
+      # Fixed: was running `npm run build` here (type check) AND again below (build verification)
+      # Use tsc --noEmit for type checking, keep the real build separate
+      - name: Type checking
+        run: npx tsc --noEmit
+
+      - name: Lint code
+        run: npm run lint --if-present
+
+      - name: Run tests
+        run: npm test --if-present
+
+      - name: Build
+        run: npm run build
+
+      - name: Upload frontend artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: frontend-artifacts
+          # Fixed: artifacts are uploaded from the job that produces them,
+          # not from a downstream job that can't access other jobs' filesystems
+          path: frontend/.next/
+          retention-days: 7
+
+  frontend-e2e:
+    name: Frontend E2E (Playwright)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: ./frontend
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        run: |
+          npm ci
+          npm install @rollup/rollup-linux-x64-gnu --save-optional
+          npm install lightningcss-linux-x64-gnu --save-optional
+
+      - name: Install Playwright browsers
+        run: npx playwright install --with-deps
+
+      - name: Run Playwright tests
+        run: npm run e2e
+
+      - name: Upload Playwright report
+        if: always()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-report
+          path: frontend/playwright-report/
+          retention-days: 7
+
+      - name: Upload Playwright test results
+        if: failure()
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-test-results
+          path: frontend/test-results/
+          retention-days: 7
+
+  build-verification:
+    name: Build Verification
+    runs-on: ubuntu-latest
+    needs: [ rust-tests, frontend-tests, frontend-e2e ]
+    steps:
+      - name: All builds passed
+        run: echo "All upstream jobs completed successfully"
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
new file mode 100644
index 00000000..335cd412
--- /dev/null
+++ b/.github/workflows/deploy.yml
@@ -0,0 +1,250 @@
+name: Deploy
+
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+    inputs:
+      environment:
+        description: 'Deployment environment'
+        required: true
+        default: 'staging'
+        type: choice
+        options:
+          - staging
+          - production
+
+# Prevent concurrent deploys to the same environment
+concurrency:
+  group: deploy-${{ github.event.inputs.environment || 'staging' }}
+  cancel-in-progress: false
+
+jobs:
+  deploy-contracts:
+    name: Deploy Smart Contracts
+    runs-on: ubuntu-latest
+    environment: ${{ github.event.inputs.environment || 'staging' }}
+    env:
+      STELLAR_CLI_VERSION: 23.4.0
+    outputs:
+      # Expose contract IDs to downstream jobs if needed
+      deployed: ${{ steps.deploy.outputs.deployed }}
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Install Rust
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
+
+      # Fixed: use the official Stellar CLI GitHub Action (replaces broken soroban curl install)
+      - name: Install Stellar CLI
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          mkdir -p "$HOME/.local/bin"
+
+          arch="$(uname -m)"
+          case "$arch" in
+            x86_64) asset_arch="x86_64" ;;
+            aarch64|arm64) asset_arch="aarch64" ;;
+            *) echo "Unsupported architecture: $arch"; exit 1 ;;
+          esac
+
+          version="${STELLAR_CLI_VERSION}"
+          base_url="https://github.com/stellar/stellar-cli/releases/download/v${version}"
+
+          urls=(
+            "${base_url}/stellar-cli-${version}-${asset_arch}-unknown-linux-gnu.tar.gz"
+            "${base_url}/stellar-cli-${version}-${asset_arch}-unknown-linux-musl.tar.gz"
+          )
+
+          success="false"
+          for url in "${urls[@]}"; do
+            echo "Attempting download: ${url}"
+            if curl -fL --retry 6 --retry-all-errors --retry-delay 5 -o stellar-cli.tar.gz "${url}"; then
+              success="true"
+              break
+            fi
+          done
+
+          if [ "$success" != "true" ]; then
+            echo "Failed to download stellar-cli v${version} from GitHub releases."
+            exit 1
+          fi
+
+          tmpdir="$(mktemp -d)"
+          tar -xzf stellar-cli.tar.gz -C "$tmpdir"
+          stellar_path="$(find "$tmpdir" -type f -name stellar | head -n 1)"
+          if [ -z "$stellar_path" ]; then
+            echo "Could not find 'stellar' binary in downloaded archive."
+            exit 1
+          fi
+          mv "$stellar_path" "$HOME/.local/bin/stellar"
+          chmod +x "$HOME/.local/bin/stellar"
+
+          echo "$HOME/.local/bin" >> "$GITHUB_PATH"
+          stellar --version
+
+      # Fixed: register the deployer key into the CLI key store.
+      # --secret-key flag was removed from deploy/invoke commands in modern stellar CLI.
+      # The correct approach is to add the key once via `stellar keys add` and then
+      # reference it by name with --source-account in subsequent commands.
+      - name: Register deployer identity
+        env:
+          STELLAR_SECRET_KEY: ${{ secrets.STELLAR_SECRET_KEY }}
+        run: |
+          echo "$STELLAR_SECRET_KEY" | stellar keys add deployer --secret-key
+
+      # Fixed: use stellar contract build instead of cargo build --target wasm32-unknown-unknown.
+      # This ensures correct metadata, optimizer flags, and proper wasm output paths.
+      - name: Build contracts
+        working-directory: ./smart-contract
+        run: stellar contract build
+
+      - name: Configure network
+        run: |
+          NETWORK=${{ github.event.inputs.environment || 'staging' }}
+          if [ "$NETWORK" = "production" ]; then
+            echo "STELLAR_NETWORK=mainnet" >> $GITHUB_ENV
+            echo "STELLAR_RPC_URL=https://soroban-rpc.mainnet.stellar.org" >> $GITHUB_ENV
+            echo "STELLAR_NETWORK_PASSPHRASE=Public Global Stellar Network ; September 2015" >> $GITHUB_ENV
+          else
+            echo "STELLAR_NETWORK=testnet" >> $GITHUB_ENV
+            echo "STELLAR_RPC_URL=https://soroban-testnet.stellar.org" >> $GITHUB_ENV
+            echo "STELLAR_NETWORK_PASSPHRASE=Test SDF Network ; September 2015" >> $GITHUB_ENV
+          fi
+
+      # Fixed: replaced --secret-key (removed flag) with --source-account referencing the
+      # registered identity. Also uses --alias per current CLI docs so contracts can be
+      # referenced by name in subsequent steps instead of tracking raw IDs in a text file.
+      - name: Deploy contracts
+        id: deploy
+        run: |
+          for wasm_file in smart-contract/target/wasm32-unknown-unknown/release/*.wasm; do
+            CONTRACT_NAME=$(basename "$wasm_file" .wasm)
+            echo "Deploying $CONTRACT_NAME..."
+            stellar contract deploy \
+              --wasm "$wasm_file" \
+              --source-account deployer \
+              --network "$STELLAR_NETWORK" \
+              --rpc-url "$STELLAR_RPC_URL" \
+              --network-passphrase "$STELLAR_NETWORK_PASSPHRASE" \
+              --alias "$CONTRACT_NAME" \
+              --ignore-checks
+            echo "Deployed $CONTRACT_NAME"
+          done
+          echo "deployed=true" >> $GITHUB_OUTPUT
+
+      - name: Initialize contracts
+        run: |
+          # Add per-contract initialization calls here, e.g.:
+          # stellar contract invoke \
+          #   --id <contract-alias> \
+          #   --source-account deployer \
+          #   --network "$STELLAR_NETWORK" \
+          #   -- initialize --admin deployer
+          echo "Add initialization logic here"
+
+      - name: Health check
+        run: |
+          # Add contract health check invocations here, e.g.:
+          # stellar contract invoke --id <alias> --network "$STELLAR_NETWORK" -- get_status
+          echo "Add health check logic here"
+
+  deploy-frontend:
+    name: Deploy Frontend
+    runs-on: ubuntu-latest
+    environment: ${{ github.event.inputs.environment || 'staging' }}
+    needs: deploy-contracts
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        working-directory: ./frontend
+        run: npm ci
+
+      - name: Write environment config
+        working-directory: ./frontend
+        run: |
+          NETWORK=${{ github.event.inputs.environment || 'staging' }}
+          if [ "$NETWORK" = "production" ]; then
+            echo "NEXT_PUBLIC_CONTRACT_ID=${{ secrets.PRODUCTION_CONTRACT_ID }}" >> .env.local
+            echo "NEXT_PUBLIC_STELLAR_NETWORK=mainnet" >> .env.local
+            echo "NEXT_PUBLIC_RPC_URL=https://soroban-rpc.mainnet.stellar.org" >> .env.local
+          else
+            echo "NEXT_PUBLIC_CONTRACT_ID=${{ secrets.STAGING_CONTRACT_ID }}" >> .env.local
+            echo "NEXT_PUBLIC_STELLAR_NETWORK=testnet" >> .env.local
+            echo "NEXT_PUBLIC_RPC_URL=https://soroban-testnet.stellar.org" >> .env.local
+          fi
+
+      - name: Build frontend
+        working-directory: ./frontend
+        run: npm run build
+
+      # Fixed: `if: env.VERCEL_TOKEN != ''` silently never evaluates true in GitHub Actions
+      # because env context is not available in `if:` conditions.
+      # Use vars (non-secret config) to gate the Vercel deploy instead.
+      - name: Deploy to Vercel
+        if: vars.USE_VERCEL == 'true'
+        working-directory: ./frontend
+        run: |
+          npm install -g vercel
+          vercel --prod --yes --token ${{ secrets.VERCEL_TOKEN }}
+
+      # Fixed: upgraded from stale peaceiris/actions-gh-pages@v3 to @v4
+      - name: Deploy to GitHub Pages (fallback)
+        if: vars.USE_VERCEL != 'true'
+        uses: peaceiris/actions-gh-pages@v4
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./frontend/.next
+          cname: ${{ (github.event.inputs.environment == 'production') && 'chainlogistics.app' || 'staging.chainlogistics.app' }}
+
+  notify:
+    name: Notify Deployment Status
+    runs-on: ubuntu-latest
+    needs: [ deploy-contracts, deploy-frontend ]
+    if: always()
+
+    steps:
+      - name: Notify success
+        if: needs.deploy-contracts.result == 'success' && needs.deploy-frontend.result == 'success'
+        run: |
+          echo "Deployment successful!"
+          # Add Slack/email notification here
+
+      - name: Notify failure
+        if: needs.deploy-contracts.result == 'failure' || needs.deploy-frontend.result == 'failure'
+        run: |
+          echo "Deployment failed!"
+          # Add Slack/email notification here
+
+  # NOTE: True contract rollback on Stellar/Soroban is not possible by reverting a deploy —
+  # deployed contracts are immutable on-chain. A real rollback strategy requires either:
+  #   1. Redeploying the previous WASM and updating any router/proxy contract to point to it, or
+  #   2. Maintaining a feature-flag or upgrade mechanism inside the contract itself.
+  # The stub below is preserved as a placeholder for frontend-only rollback (e.g. Vercel promote).
+  rollback:
+    name: Rollback Frontend on Failure
+    runs-on: ubuntu-latest
+    needs: [ deploy-contracts, deploy-frontend ]
+    if: failure() && github.event_name == 'push' && vars.USE_VERCEL == 'true'
+
+    steps:
+      - name: Rollback Vercel deployment
+        run: |
+          echo "Promote the previous Vercel deployment via the Vercel API or CLI here."
+          # vercel rollback --token ${{ secrets.VERCEL_TOKEN }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
new file mode 100644
index 00000000..9291d2ca
--- /dev/null
+++ b/.github/workflows/release.yml
@@ -0,0 +1,152 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - "v*.*.*"
+
+jobs:
+  release:
+    name: Create Release
+    runs-on: ubuntu-latest
+
+    steps:
+      # Checkout repository
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      # Setup Node
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+
+      # Install Rust
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      # Add WASM target
+      - name: Add wasm target
+        run: rustup target add wasm32-unknown-unknown
+
+      # Install Soroban CLI
+      - name: Install Soroban CLI
+        run: cargo install soroban-cli --locked
+
+      # Extract version from tag
+      - name: Get version from tag
+        id: get_version
+        run: echo "version=${GITHUB_REF#refs/tags/v}" >> $GITHUB_OUTPUT
+
+      # Generate changelog
+      - name: Generate changelog
+        id: changelog
+        run: |
+          PREVIOUS_TAG=$(git describe --tags --abbrev=0 HEAD~1 2>/dev/null || echo "")
+          if [ -z "$PREVIOUS_TAG" ]; then
+            PREVIOUS_TAG=$(git rev-list --max-parents=0 HEAD)
+          fi
+
+          echo "## What's Changed" > changelog.md
+          echo "" >> changelog.md
+          git log --pretty=format:"* %s (%h)" --no-merges ${PREVIOUS_TAG}..HEAD >> changelog.md
+          echo "" >> changelog.md
+          echo "**Full Changelog**: https://github.com/${{ github.repository }}/compare/${PREVIOUS_TAG}...${{ github.ref }}" >> changelog.md
+
+          {
+            echo 'changelog<<EOF'
+            cat changelog.md
+            echo EOF
+          } >> $GITHUB_OUTPUT
+
+      # Build Soroban contracts
+      - name: Build Rust contracts
+        working-directory: ./smart-contract
+        run: cargo build --release --target wasm32-unknown-unknown
+
+      # Install frontend dependencies
+      - name: Install frontend dependencies
+        working-directory: ./frontend
+        run: npm ci
+
+      # Build frontend
+      - name: Build frontend
+        working-directory: ./frontend
+        run: npm run build
+
+      # Package frontend build
+      - name: Package frontend build
+        run: |
+          tar -czf frontend-build.tar.gz -C frontend .next
+
+      # Prepare release artifacts
+      - name: Prepare release artifacts
+        run: |
+          mkdir release-artifacts
+          cp smart-contract/target/wasm32-unknown-unknown/release/*.wasm release-artifacts/
+          cp frontend-build.tar.gz release-artifacts/
+
+      # Zip artifacts
+      - name: Zip release artifacts
+        run: |
+          cd release-artifacts
+          zip -r ../chainlogistics-${{ steps.get_version.outputs.version }}.zip .
+
+      # Create GitHub Release
+      - name: Create GitHub Release
+        id: create_release
+        uses: actions/create-release@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          tag_name: ${{ github.ref }}
+          release_name: Release ${{ steps.get_version.outputs.version }}
+          body: ${{ steps.changelog.outputs.changelog }}
+          draft: false
+          prerelease: false
+
+      # Upload release asset
+      - name: Upload release assets
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: ./chainlogistics-${{ steps.get_version.outputs.version }}.zip
+          asset_name: chainlogistics-${{ steps.get_version.outputs.version }}.zip
+          asset_content_type: application/zip
+
+
+  publish-frontend:
+    name: Publish Frontend
+    runs-on: ubuntu-latest
+    needs: release
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: "npm"
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install dependencies
+        working-directory: ./frontend
+        run: npm ci
+
+      - name: Build frontend
+        working-directory: ./frontend
+        run: npm run build
+
+      # Deploy to Vercel
+      - name: Deploy to Vercel
+        if: secrets.VERCEL_TOKEN != ''
+        run: |
+          npm install -g vercel
+          cd frontend
+          vercel --prod --yes --token ${{ secrets.VERCEL_TOKEN }}
diff --git a/.github/workflows/security.yml b/.github/workflows/security.yml
new file mode 100644
index 00000000..ab0eb099
--- /dev/null
+++ b/.github/workflows/security.yml
@@ -0,0 +1,104 @@
+name: Security Scan
+
+on:
+  schedule:
+    # Run weekly on Mondays at 9 AM UTC
+    - cron: '0 9 * * 1'
+  workflow_dispatch:
+  push:
+    branches: [ main ]
+
+jobs:
+  # Replaces the separate rust-security and npm-security jobs.
+  #
+  # WHY: cargo audit is effectively unmaintained (primary maintainer stepped back March 2025).
+  # Its --format json --output flags don't exist (correct flag is --json to stdout), and its
+  # JSON schema doesn't have a flat "severity": "critical" field, so the grep checks were
+  # silently never matching anything. OSV-Scanner covers Cargo, npm, and 11+ other ecosystems,
+  # outputs SARIF to GitHub's Security tab natively, and is actively maintained by Google.
+  osv-scan:
+    name: OSV Dependency Scan
+    uses: google/osv-scanner-action/.github/workflows/osv-scanner-reusable.yml@v2.3.3
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    with:
+      # Recursively scans the repo, picking up both Cargo.lock and frontend/package-lock.json
+      scan-args: |-
+        --recursive
+        ./
+
+  codeql-analysis:
+    name: CodeQL Analysis
+    runs-on: ubuntu-latest
+    permissions:
+      actions: read
+      contents: read
+      security-events: write
+    strategy:
+      fail-fast: false
+      matrix:
+        # Fixed: 'rust' is not a supported CodeQL language.
+        # CodeQL does not support Rust — remove it to prevent the job from failing silently
+        # or erroring. If you want static analysis for Rust, use cargo clippy (in CI) or
+        # a dedicated tool like semgrep with Rust rules.
+        language: [ 'javascript-typescript' ]
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Initialize CodeQL
+        uses: github/codeql-action/init@v3
+        with:
+          languages: ${{ matrix.language }}
+          queries: security-and-quality
+
+      - name: Autobuild
+        uses: github/codeql-action/autobuild@v3
+
+      - name: Perform CodeQL Analysis
+        uses: github/codeql-action/analyze@v3
+        with:
+          category: "/language:${{ matrix.language }}"
+
+  license-check:
+    name: License Compliance
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+
+      - name: Install frontend dependencies
+        working-directory: ./frontend
+        run: npm ci
+
+      - name: Install license-checker
+        run: npm install -g license-checker
+
+      - name: Check frontend licenses
+        working-directory: ./frontend
+        run: |
+          license-checker --json --out licenses.json
+          # Warn on any GPL variant (GPL-2.0, GPL-3.0, LGPL, AGPL, etc.)
+          if grep -qE '"licenses":\s*"(A|L)?GPL' licenses.json; then
+            echo "⚠ GPL-family licensed dependencies found — review for compatibility:"
+            grep -E '"licenses":\s*"(A|L)?GPL' licenses.json
+            # This is a warning, not a hard failure — adjust to 'exit 1' if you want to enforce
+          else
+            echo "✓ No GPL-family licenses found."
+          fi
+
+      - name: Upload license report
+        uses: actions/upload-artifact@v4
+        with:
+          name: license-report
+          path: frontend/licenses.json
+          retention-days: 30
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 00000000..7c8d4bdc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,57 @@
+# Rust build artifacts
+target/
+**/target/
+backend/target/
+sdk/rust/target/
+smart-contract/target/
+smart-contract/contracts/target/
+**/*.rs.bk
+*.pdb
+
+# Node.js
+node_modules/
+frontend/node_modules/
+frontend/.next/
+frontend/out/
+frontend/.cache/
+
+# Environment files
+.env
+.env.local
+.env.*.local
+backend/.env
+frontend/.env.local
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Test coverage
+coverage/
+*.lcov
+
+# Temporary files
+smart-contract/contracts/src/simple_test.rs
+smart-contract/contracts/test_snapshots/
+issue.md
+checks.md
+task.md
+GITHUB_ISSUES.md
+pr.md
+
+# Frontend Testing
+playwright-report/
+test-results/
\ No newline at end of file
diff --git a/CODE_REVIEW.md b/CODE_REVIEW.md
new file mode 100644
index 00000000..7bcdadcd
--- /dev/null
+++ b/CODE_REVIEW.md
@@ -0,0 +1,594 @@
+# Code Review Process
+
+This document establishes the formal code review process for ChainLogistics. Code reviews are essential for maintaining code quality, sharing knowledge, and ensuring the stability of the codebase.
+
+## Table of Contents
+
+- [Overview](#overview)
+- [Review Workflow](#review-workflow)
+- [Review Roles](#review-roles)
+- [Review Requirements](#review-requirements)
+- [Code Review Checklists](#code-review-checklists)
+- [Review Standards](#review-standards)
+- [Review Guidelines](#review-guidelines)
+- [Review Metrics](#review-metrics)
+
+---
+
+## Overview
+
+### Purpose
+
+Code reviews serve multiple purposes:
+- **Quality Assurance**: Catch bugs, security issues, and performance problems before production
+- **Knowledge Sharing**: Help team members understand different parts of the codebase
+- **Consistency**: Ensure code follows project standards and best practices
+- **Maintainability**: Improve long-term maintainability of the codebase
+- **Onboarding**: Help new contributors understand the codebase
+
+### Scope
+
+All code changes must go through review, including:
+- New features
+- Bug fixes
+- Refactoring
+- Documentation changes
+- Configuration changes
+- Test updates
+
+### Review Categories
+
+1. **Feature Review** - New functionality
+2. **Bug Fix Review** - Bug corrections
+3. **Security Review** - Security-related changes
+4. **Performance Review** - Performance optimizations
+5. **Refactoring Review** - Code restructuring
+6. **Documentation Review** - Documentation updates
+
+---
+
+## Review Workflow
+
+### 1. Self-Review (Before Submitting)
+
+Before requesting a code review, the author must:
+
+- [ ] Complete all acceptance criteria
+- [ ] Run all tests locally
+- [ ] Check for compiler/linter warnings
+- [ ] Review own changes for obvious issues
+- [ ] Update relevant documentation
+- [ ] Add/update tests if applicable
+- [ ] Ensure commit messages follow conventions
+- [ ] Verify the PR description is complete
+
+### 2. Submit Pull Request
+
+- Create a descriptive PR title
+- Fill out the PR template completely
+- Link to related issues
+- Add appropriate labels
+- Assign reviewers based on the area of change
+- Request review from at least one team member
+
+### 3. Initial Review
+
+The reviewer should:
+- Read the PR description to understand context
+- Review the changes in a logical order
+- Start with high-level design, then implementation details
+- Focus on correctness, security, and maintainability
+- Provide constructive, specific feedback
+
+### 4. Discussion and Revision
+
+- Author responds to all review comments
+- Author makes requested changes or provides justification
+- Author pushes updates to the same branch
+- Author requests re-review when changes are complete
+
+### 5. Approval and Merge
+
+- At least one approval from a maintainer required
+- All CI checks must pass
+- No outstanding blocking comments
+- PR must be up-to-date with main branch
+- Squash and merge (or merge commit if history needed)
+
+### 6. Post-Merge
+
+- Reviewer monitors for any issues
+- Author closes related issues
+- Team updates documentation if needed
+
+---
+
+## Review Roles
+
+### Author
+
+**Responsibilities:**
+- Write clean, documented code
+- Write tests for new functionality
+- Update documentation
+- Respond to review comments promptly
+- Make requested changes or provide justification
+- Follow project conventions
+
+### Reviewer
+
+**Responsibilities:**
+- Review code thoroughly and promptly
+- Provide constructive, specific feedback
+- Ask questions if something is unclear
+- Suggest improvements and alternatives
+- Ensure code follows project standards
+- Verify tests are adequate
+
+### Maintainer
+
+**Responsibilities:**
+- Approve or reject pull requests
+- Ensure review process is followed
+- Resolve conflicts in review feedback
+- Make final merge decisions
+- Enforce code quality standards
+
+### Domain Expert
+
+**Responsibilities:**
+- Review changes in their area of expertise
+- Provide deep technical feedback
+- Ensure domain-specific correctness
+- Suggest architectural improvements
+
+---
+
+## Review Requirements
+
+### Minimum Review Requirements
+
+**All PRs must have:**
+- At least one reviewer approval
+- All automated checks passing (tests, lint, build)
+- No unresolved blocking comments
+- Updated documentation (if applicable)
+- Tests for new functionality
+- Descriptive commit messages
+
+**Additional requirements by PR type:**
+
+#### Feature PRs
+- [ ] At least one maintainer approval
+- [ ] Design document (for large features)
+- [ ] Tests with >80% coverage for new code
+- [ ] Updated API documentation
+- [ ] Performance impact assessment
+
+#### Bug Fix PRs
+- [ ] Test case reproducing the bug
+- [ ] Verification that fix resolves the issue
+- [ ] Regression tests
+- [ ] Root cause analysis in PR description
+
+#### Security PRs
+- [ ] Security expert review
+- [ ] Security impact assessment
+- [ ] Vulnerability disclosure (if applicable)
+- [ ] Security testing
+- [ ] Maintainer approval
+
+#### Performance PRs
+- [ ] Performance benchmarks
+- [ ] Before/after metrics
+- [ ] Profiling data
+- [ ] Performance expert review
+
+#### Refactoring PRs
+- [ ] No behavior changes
+- [ ] All existing tests pass
+- [ ] Refactoring justification
+- [ ] Migration guide (if breaking)
+
+### Review Timeline
+
+- **Small PRs (<100 lines)**: Review within 24 hours
+- **Medium PRs (100-500 lines)**: Review within 48 hours
+- **Large PRs (500+ lines)**: Review within 72 hours
+- **Complex PRs**: Break down into smaller PRs if possible
+
+### Review Priority
+
+| Priority | PR Type | SLA |
+|----------|---------|-----|
+| Critical | Security fixes, production bugs | 4 hours |
+| High | Important features, performance | 24 hours |
+| Medium | Regular features, improvements | 48 hours |
+| Low | Documentation, minor fixes | 1 week |
+
+---
+
+## Code Review Checklists
+
+### General Checklist
+
+**Code Quality**
+- [ ] Code follows project style guidelines
+- [ ] No compiler warnings
+- [ ] No linting errors
+- [ ] Code is properly formatted
+- [ ] Complex logic has comments
+- [ ] Magic numbers replaced with constants
+- [ ] No dead code or commented-out code
+- [ ] No debugging code left in
+
+**Functionality**
+- [ ] Implementation matches requirements
+- [ ] Edge cases are handled
+- [ ] Error handling is comprehensive
+- [ ] Input validation is present
+- [ ] Security best practices followed
+- [ ] Performance is acceptable
+- [ ] Memory usage is reasonable
+
+**Testing**
+- [ ] Unit tests added/updated
+- [ ] Integration tests added (if applicable)
+- [ ] E2E tests added (for UI changes)
+- [ ] Tests cover happy path
+- [ ] Tests cover error cases
+- [ ] Test coverage is sufficient (>80% for new code)
+- [ ] All tests pass locally
+
+**Documentation**
+- [ ] Public APIs documented
+- [ ] Complex algorithms explained
+- [ ] README updated (if needed)
+- [ ] API documentation updated (if endpoints changed)
+- [ ] Changelog updated (if breaking change)
+- [ ] Comments are accurate and up-to-date
+
+**Security**
+- [ ] No secrets or keys committed
+- [ ] User inputs are validated
+- [ ] SQL injection prevention in place
+- [ ] XSS prevention in place (frontend)
+- [ ] Authentication/authorization correct
+- [ ] Rate limiting applied (if public API)
+- [ ] Dependencies are up-to-date
+
+### Smart Contract Checklist
+
+**Additional for Soroban Contracts:**
+- [ ] Storage keys are unique and well-named
+- [ ] State changes are atomic
+- [ ] Access control is properly implemented
+- [ ] Error messages are descriptive
+- [ ] Gas optimization considered
+- [ ] Events emitted for state changes
+- [ ] Input validation at contract entry
+- [ ] Reentrancy protection (if applicable)
+- [ ] Integer overflow/underflow prevention
+- [ ] Cross-contract calls handled safely
+- [ ] WASM size is reasonable
+- [ ] Test coverage >90%
+
+### Backend Checklist
+
+**Additional for Rust/Axum:**
+- [ ] Handler functions are async where appropriate
+- [ ] Database queries use parameterized statements
+- [ ] Connection pooling configured
+- [ ] Error types are comprehensive
+- [ ] utoipa annotations added for new endpoints
+- [ ] ToSchema derived for request/response structs
+- [ ] Rate limiting applied to public endpoints
+- [ ] CORS configured correctly
+- [ ] Logging is appropriate (not too verbose)
+- [ ] Environment variables used for configuration
+- [ ] Database migrations included
+- [ ] SQL injection prevention verified
+
+### Frontend Checklist
+
+**Additional for Next.js/TypeScript:**
+- [ ] Components are reusable and modular
+- [ ] TypeScript types defined (no `any`)
+- [ ] Props interface documented
+- [ ] State management is appropriate
+- [ ] Error boundaries implemented
+- [ ] Loading states handled
+- [ ] Responsive design verified
+- [ ] Accessibility (a11y) considered
+- [ ] Performance optimized (lazy loading, memoization)
+- [ ] SEO metadata updated (if applicable)
+- [ ] API error handling is user-friendly
+- [ ] Form validation is comprehensive
+
+### Database Checklist
+
+**Additional for SQL Changes:**
+- [ ] Migration is reversible
+- [ ] Migration doesn't destroy data
+- [ ] Indexes added for query optimization
+- [ ] Foreign key constraints defined
+- [ ] Unique constraints where appropriate
+- [ ] Default values specified
+- [ ] Data types are appropriate
+- [ ] Migration tested on sample data
+- [ ] Rollback plan documented
+
+---
+
+## Review Standards
+
+### Code Quality Standards
+
+**Readability**
+- Code should be self-documenting where possible
+- Function names should describe what they do
+- Variable names should be descriptive
+- Complex logic should have explanatory comments
+- File structure should be logical
+
+**Maintainability**
+- Code should be modular and loosely coupled
+- Functions should be small and focused (single responsibility)
+- DRY principle followed (Don't Repeat Yourself)
+- Dependencies should be minimal
+- Configuration should be externalized
+
+**Performance**
+- Algorithms should be efficient
+- Database queries should be optimized
+- Caching used where appropriate
+- Memory usage should be reasonable
+- No unnecessary computations
+
+**Security**
+- Input validation on all user inputs
+- Output encoding to prevent XSS
+- SQL injection prevention
+- Authentication and authorization
+- Secrets never committed
+- Dependencies regularly updated
+
+### Documentation Standards
+
+**Code Comments**
+- Public APIs must have documentation
+- Complex algorithms must be explained
+- Non-obvious decisions need comments
+- TODO comments should have context and issue numbers
+- Comments should explain "why", not "what"
+
+**API Documentation**
+- All endpoints documented with utoipa
+- Request/response schemas defined
+- Error responses documented
+- Examples provided
+- Authentication requirements specified
+
+**README/Docs**
+- Setup instructions updated
+- Configuration documented
+- Breaking changes noted
+- Migration guides provided
+
+### Testing Standards
+
+**Coverage Requirements**
+- New code: >80% coverage
+- Critical paths: >90% coverage
+- Utility functions: 100% coverage
+
+**Test Quality**
+- Tests should be independent
+- Tests should be fast
+- Tests should be deterministic
+- Tests should have clear names
+- Tests should test behavior, not implementation
+
+---
+
+## Review Guidelines
+
+### For Reviewers
+
+**Be Constructive**
+- Focus on the code, not the person
+- Explain the "why" behind suggestions
+- Provide code examples for improvements
+- Acknowledge good work
+
+**Be Specific**
+- Point to specific lines of code
+- Suggest concrete improvements
+- Explain the impact of changes
+- Link to relevant documentation
+
+**Be Thorough**
+- Review the entire change, not just the diff
+- Consider edge cases
+- Think about long-term implications
+- Check for security issues
+
+**Be Timely**
+- Respond to review requests promptly
+- If you can't review, reassign or comment
+- Aim to complete reviews within SLA
+
+### For Authors
+
+**Be Receptive**
+- Accept feedback gracefully
+- Ask clarifying questions
+- Explain your reasoning if you disagree
+- Learn from the review process
+
+**Be Responsive**
+- Respond to comments promptly
+- Make requested changes quickly
+- Request re-review when ready
+- Don't leave PRs hanging
+
+**Be Professional**
+- Don't take feedback personally
+- Focus on improving the code
+- Thank reviewers for their time
+- Help reviewers understand the context
+
+---
+
+## Review Metrics
+
+### Key Metrics to Track
+
+- **Review Time**: Average time from PR request to approval
+- **Review Count**: Number of reviewers per PR
+- **Comment Count**: Number of review comments per PR
+- **Cycle Time**: Time from PR creation to merge
+- **Rejection Rate**: Percentage of PRs rejected
+- **Revision Count**: Number of revisions per PR
+- **Test Coverage**: Coverage percentage before and after
+
+### Quality Metrics
+
+- **Bug Rate**: Number of bugs found in production per PR
+- **Defect Density**: Bugs per thousand lines of code
+- **Review Effectiveness**: Bugs caught during review vs. production
+- **Code Churn**: Percentage of code changed within 3 months
+
+### Process Metrics
+
+- **PR Backlog**: Number of PRs awaiting review
+- **Reviewer Availability**: Average reviewer capacity
+- **Merge Frequency**: Number of merges per day/week
+- **Review Participation**: Percentage of team members reviewing
+
+### Goals
+
+- Average review time: <48 hours
+- Reviewer participation: >80%
+- Test coverage: >80%
+- Production bugs from reviewed code: <5%
+
+---
+
+## Review Templates
+
+### PR Review Comment Template
+
+```markdown
+## Feedback
+
+### Overall
+[Brief summary of overall impression]
+
+### Issues
+- [ ] **Issue 1**: Description with line reference
+  - Severity: [Critical/High/Medium/Low]
+  - Suggestion: What to fix
+
+### Suggestions
+- [ ] **Suggestion 1**: Improvement opportunity
+  - Benefit: Why this helps
+
+### Questions
+- [ ] **Question 1**: Something unclear
+  - Context: Why this matters
+
+### Positive Feedback
+- Good job on [specific aspect]
+- Nice implementation of [specific feature]
+```
+
+### Review Summary Template
+
+```markdown
+## Review Summary
+
+**PR**: #123
+**Reviewer**: @username
+**Status**: [Approved/Changes Requested]
+
+### Summary
+[Brief overview of the review]
+
+### Key Findings
+- [ ] Critical issues: 0
+- [ ] High priority: 2
+- [ ] Medium priority: 3
+- [ ] Low priority: 1
+
+### Recommendation
+[Approve with minor changes / Request changes / Reject]
+
+### Next Steps
+[List of actions needed before merge]
+```
+
+---
+
+## Escalation Process
+
+### When to Escalate
+
+- Review not completed within SLA
+- Disagreement on technical approach
+- Blocking review comments that seem unreasonable
+- Security concerns not addressed
+- Process violations
+
+### Escalation Steps
+
+1. **Discuss directly**: First try to resolve with the reviewer
+2. **Tag maintainer**: If unresolved, tag a maintainer for input
+3. **Team discussion**: If still unresolved, bring to team meeting
+4. **Final decision**: Maintainer makes final call
+
+---
+
+## Continuous Improvement
+
+### Review Process Reviews
+
+Quarterly review of the code review process:
+- Collect feedback from team
+- Analyze metrics
+- Identify bottlenecks
+- Implement improvements
+
+### Training
+
+Regular training sessions on:
+- Code review best practices
+- Security review techniques
+- Performance optimization
+- Testing strategies
+
+### Tool Improvements
+
+Regular evaluation of tools:
+- Automated review tools (linters, static analysis)
+- Code coverage tools
+- Security scanners
+- CI/CD integration
+
+---
+
+## Resources
+
+- [Contributing Guidelines](./Contributing.md)
+- [Code Style Guidelines](./Contributing.md#code-style-guidelines)
+- [Testing Requirements](./Contributing.md#testing-requirements)
+- [GitHub Review Features](https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests)
+
+---
+
+## Contact
+
+For questions about the code review process:
+- **Lead Maintainer**: maintainer@chainlogistics.io
+- **Team Discord**: https://discord.gg/chainlogistics
+- **GitHub Discussions**: https://github.com/ChainLojistics/ChainLogistics/discussions
diff --git a/Contributing.md b/Contributing.md
index 77708557..94b581a1 100644
--- a/Contributing.md
+++ b/Contributing.md
@@ -2,7 +2,7 @@
 
 Thank you for your interest in contributing to ChainLojistic! This comprehensive guide will help you contribute effectively to our open-source supply chain tracking platform.
 
-## 📚 Table of Contents
+## 📚 Table of Contentss
 - [Quick Start](#quick-start)
 - [Development Setup](#development-setup)
 - [Project Structure](#project-structure)
@@ -25,7 +25,7 @@ ChainLojistic is a decentralized supply chain tracker built on Stellar's Soroban
 
 1. **Smart Contracts** (Rust/Soroban) - On-chain logic
 2. **Frontend** (Next.js 15/React 19/TypeScript) - Web UI
-3. **Backend** (Node.js/Express/TypeScript) - API (optional)
+3. **Backend** (Rust/Axum/SQLx) - High-Performance API Server
 
 **New contributors**: Look for issues labeled `good first issue`!
 
@@ -48,7 +48,10 @@ rustup target add wasm32-unknown-unknown
 ```
 
 #### Frontend & Backend:
-- Node.js 18+
+- Node.js 18+ (for frontend)
+- Rust 1.70+ (for backend)
+- PostgreSQL 14+ (for backend database)
+- Redis 6+ (for backend caching)
 - npm or yarn
 - Git
 
@@ -74,46 +77,174 @@ cd ../frontend
 npm install
 npm run dev  # http://localhost:3000
 
-# 6. Backend (optional)
+# 6. Backend (Rust/Axum)
 cd ../backend
-npm install
+cargo build
+cargo test
 cp .env.example .env
-npm run dev  # http://localhost:3001
+cargo run  # http://localhost:3001
 ```
 
 ---
 
 ## 📁 Project Structure
-
 ```
 ChainLojistic/
-├── contracts/                    # Soroban Smart Contracts
-│   ├── src/lib.rs               # Main contract (Product, Events)
+├── contracts/                           # Soroban Smart Contracts
+│   ├── src/
+│   │   ├── lib.rs                      # Contract entry point & exports
+│   │   ├── contract.rs                 # Main contract implementation
+│   │   ├── types.rs                    # Data structures (Product, Event)
+│   │   ├── storage.rs                  # Storage keys & helpers
+│   │   ├── error.rs                    # Custom error types
+│   │   ├── events.rs                   # Event emission
+│   │   ├── validation.rs               # Input validation logic
+│   │   └── test/
+│   │       ├── mod.rs                  # Test module exports
+│   │       ├── setup.rs                # Test utilities & fixtures
+│   │       ├── product_tests.rs        # Product function tests
+│   │       ├── event_tests.rs          # Event tracking tests
+│   │       ├── access_tests.rs         # Authorization tests
+│   │       └── integration_tests.rs    # Full workflow tests
 │   ├── Cargo.toml
 │   └── README.md
 │
-├── frontend/                     # Next.js App
+├── frontend/                            # Next.js Application
 │   ├── app/
-│   │   ├── page.tsx             # Homepage
-│   │   ├── register/            # Product registration
-│   │   ├── track/               # Tracking pages
-│   │   └── verify/              # Verification
+│   │   ├── layout.tsx                  # Root layout
+│   │   ├── page.tsx                    # Homepage (EXISTS)
+│   │   ├── globals.css                 # Global styles
+│   │   ├── register/
+│   │   │   └── page.tsx               # Product registration
+│   │   ├── products/
+│   │   │   ├── page.tsx               # Products list
+│   │   │   └── [id]/
+│   │   │       ├── page.tsx           # Product detail
+│   │   │       └── add-event/
+│   │   │           └── page.tsx       # Add tracking event
+│   │   ├── verify/
+│   │   │   └── [id]/
+│   │   │       └── page.tsx           # QR verification page
+│   │   └── analytics/
+│   │       └── page.tsx               # Analytics dashboard
 │   ├── components/
-│   │   ├── wallet/              # Wallet connection
-│   │   ├── tracking/            # Timeline, events
-│   │   └── ui/                  # Reusable components
+│   │   ├── wallet/
+│   │   │   ├── WalletConnect.tsx      # Wallet connection button
+│   │   │   └── WalletStatus.tsx       # Wallet status indicator
+│   │   ├── forms/
+│   │   │   ├── ProductForm.tsx        # Product registration form
+│   │   │   ├── EventForm.tsx          # Event tracking form
+│   │   │   └── FormInput.tsx          # Reusable form input
+│   │   ├── tracking/
+│   │   │   ├── Timeline.tsx           # Event timeline
+│   │   │   ├── EventCard.tsx          # Single event display
+│   │   │   └── EventFilters.tsx       # Filter events
+│   │   ├── products/
+│   │   │   ├── ProductCard.tsx        # Product card
+│   │   │   ├── ProductList.tsx        # Products grid
+│   │   │   └── ProductDetails.tsx     # Product info display
+│   │   ├── qr/
+│   │   │   ├── QRGenerator.tsx        # Generate QR codes
+│   │   │   └── QRScanner.tsx          # Scan QR codes
+│   │   ├── charts/
+│   │   │   ├── EventsChart.tsx        # Events visualization
+│   │   │   └── OriginChart.tsx        # Origin distribution
+│   │   └── ui/
+│   │       ├── Button.tsx             # Reusable button
+│   │       ├── Card.tsx               # Reusable card
+│   │       ├── Input.tsx              # Reusable input
+│   │       ├── Modal.tsx              # Modal component
+│   │       └── LoadingSpinner.tsx     # Loading state
 │   ├── lib/
-│   │   ├── stellar.ts           # Soroban interaction
-│   │   └── types.ts             # TypeScript types
-│   └── package.json
+│   │   ├── stellar/
+│   │   │   ├── client.ts              # Stellar RPC client
+│   │   │   ├── contract.ts            # Contract interaction
+│   │   │   ├── wallet.ts              # Wallet utilities
+│   │   │   └── types.ts               # Stellar types
+│   │   ├── utils/
+│   │   │   ├── format.ts              # Formatting helpers
+│   │   │   ├── validation.ts          # Client-side validation
+│   │   │   └── constants.ts           # Constants
+│   │   └── hooks/
+│   │       ├── useContract.ts         # Contract interaction hook
+│   │       ├── useProducts.ts         # Product data hook
+│   │       ├── useEvents.ts           # Events data hook
+│   │       └── useWallet.ts           # Wallet hook
+│   ├── contexts/
+│   │   ├── WalletContext.tsx          # Wallet state
+│   │   └── ContractContext.tsx        # Contract state
+│   ├── types/
+│   │   ├── product.ts                 # Product types
+│   │   ├── event.ts                   # Event types
+│   │   └── api.ts                     # API types
+│   ├── public/
+│   │   ├── images/
+│   │   └── icons/
+│   ├── tests/
+│   │   ├── unit/                      # Unit tests
+│   │   └── e2e/                       # E2E tests
+│   ├── package.json
+│   ├── tsconfig.json
+│   ├── tailwind.config.ts
+│   └── next.config.ts
 │
-└── backend/                      # API Server
-    ├── src/
-    │   ├── index.ts             # Express app
-    │   ├── routes/              # API routes
-    │   └── services/            # Business logic
-    └── package.json
-```
+├── backend/                             # Rust API Server (Axum)
+│   ├── src/
+│   │   ├── main.rs                    # Server entry point
+│   │   ├── lib.rs                     # Library exports
+│   │   ├── routes/
+│   │   │   ├── mod.rs                 # Route module
+│   │   │   ├── products.rs            # Product routes
+│   │   │   ├── events.rs              # Event routes
+│   │   │   ├── analytics.rs           # Analytics routes
+│   │   │   └── webhooks.rs            # Webhook routes
+│   │   ├── services/
+│   │   │   ├── soroban_service.rs     # Contract interactions
+│   │   │   ├── cache_service.rs        # Redis caching
+│   │   │   └── webhook_service.rs      # Webhook handling
+│   │   ├── middleware/
+│   │   │   ├── mod.rs                 # Middleware module
+│   │   │   ├── auth.rs                # Authentication
+│   │   │   └── rate_limit.rs          # Rate limiting
+│   │   ├── models/
+│   │   │   ├── mod.rs                 # Model exports
+│   │   │   ├── product.rs              # Product structs
+│   │   │   └── event.rs               # Event structs
+│   │   ├── config/
+│   │   │   └── mod.rs                 # Configuration
+│   │   ├── database/
+│   │   │   └── mod.rs                 # Database layer
+│   │   └── utils/
+│   │       └── mod.rs                 # Utilities
+│   ├── migrations/                     # SQLx migrations
+│   ├── tests/
+│   │   ├── unit/
+│   │   └── integration/
+│   ├── Cargo.toml                      # Rust dependencies
+│   └── .env.example                    # Environment variables
+│
+├── docs/                                # Documentation
+│   ├── ARCHITECTURE.md
+│   ├── API.md
+│   ├── DEPLOYMENT.md
+│   └── images/
+│
+├── .github/                             # GitHub configs
+│   ├── workflows/
+│   │   ├── contracts-ci.yml           # Contract CI/CD
+│   │   ├── frontend-ci.yml            # Frontend CI/CD
+│   │   └── backend-ci.yml             # Backend CI/CD
+│   ├── ISSUE_TEMPLATE/
+│   │   ├── bug_report.md
+│   │   ├── feature_request.md
+│   │   └── good_first_issue.md
+│   └── pull_request_template.md
+│
+├── .gitignore
+├── README.md
+├── CONTRIBUTING.md
+├── LICENSE
+└── package.json                         # Root workspace config
 
 ---
 
@@ -152,7 +283,7 @@ ChainLojistic/
    cd frontend && npm run build
    
    # Backend
-   cd backend && npm test
+   cd backend && cargo test
    ```
 
 6. **Commit & Push**
@@ -187,7 +318,7 @@ ChainLojistic/
 | `documentation` | Docs work | ⭐ Easy |
 | `smart-contract` | Soroban/Rust | ⭐⭐⭐ Hard |
 | `frontend` | Next.js/React | ⭐⭐ Medium |
-| `backend` | Node.js/API | ⭐⭐ Medium |
+| `backend` | Rust/Axum/API | ⭐⭐ Medium |
 | `testing` | Test coverage | ⭐⭐ Medium |
 | `design` | UI/UX work | ⭐⭐ Medium |
 | `priority: high` | Urgent | - |
@@ -730,10 +861,10 @@ npm install -D @types/qrcode
 Build RESTful API endpoints for product CRUD operations.
 
 #### What You'll Learn
-- REST API design
-- Express.js routing
-- Soroban integration
-- Error handling
+- REST API design with Rust/Axum
+- Async Rust programming
+- Soroban integration from Rust
+- Error handling with thiserror
 
 #### Endpoints to Create
 ```
@@ -745,46 +876,54 @@ POST   /api/products/:id/events  - Add event
 ```
 
 #### Implementation
-```typescript
-// src/routes/products.ts
-import { Router } from 'express';
-import { Contract } from '@stellar/stellar-sdk';
-
-const router = Router();
-
-router.get('/products/:id', async (req, res) => {
-  try {
-    const { id } = req.params;
-    const contract = new Contract(process.env.CONTRACT_ID);
-    const product = await contract.get_product({ id });
-    res.json(product);
-  } catch (error) {
-    res.status(500).json({ error: error.message });
-  }
-});
+```rust
+// src/routes/products.rs
+use axum::{extract::Path, response::Json, routing::get, Router};
+use soroban_sdk::{Address, Env};
+
+pub fn product_routes() -> Router<AppState> {
+    Router::new()
+        .route("/products", get(list_products).post(create_product))
+        .route("/products/:id", get(get_product))
+        .route("/products/:id/events", get(get_product_events))
+}
 
-export default router;
+async fn get_product(
+    Path(id): Path<String>,
+    State(app_state): State<AppState>,
+) -> Result<Json<Product>, AppError> {
+    let product = app_state.soroban_service.get_product(&id).await?;
+    Ok(Json(product))
+}
 ```
 
 #### Validation
-```typescript
-// src/middleware/validation.ts
-import { body, param, validationResult } from 'express-validator';
-
-export const validateProduct = [
-  body('id').isString().trim().notEmpty(),
-  body('name').isString().trim().isLength({ min: 3 }),
-  body('origin').isString().trim().notEmpty(),
-  (req, res, next) => {
-    const errors = validationResult(req);
-    if (!errors.isEmpty()) {
-      return res.status(400).json({ errors: errors.array() });
-    }
-    next();
-  }
-];
-```
+```rust
+// src/middleware/validation.rs
+use axum::{extract::Request, middleware::Next, response::Response};
+use serde::{Deserialize, Serialize};
+use validator::Validate;
+
+#[derive(Deserialize, Validate)]
+pub struct CreateProductRequest {
+    #[validate(length(min = 3, message = "Name must be at least 3 characters"))]
+    pub name: String,
+    
+    #[validate(length(min = 1, message = "Origin is required"))]
+    pub origin: String,
+    
+    #[validate(custom = "validate_stellar_address")]
+    pub owner: String,
+}
 
+pub async fn validate_product(
+    req: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    // Validation logic here
+    Ok(next.run(req).await)
+}
+```
 #### Error Responses
 ```json
 {
@@ -795,20 +934,25 @@ export const validateProduct = [
 ```
 
 #### Acceptance Criteria
-- [ ] All endpoints work
-- [ ] Proper validation
-- [ ] Error handling
-- [ ] Correct HTTP status codes
-- [ ] API documented
+- [ ] All endpoints functional with proper validation
+- [ ] Error handling works correctly
+- [ ] Contract integration tested
+- [ ] API responses follow consistent format
+- [ ] Rate limiting applied
 
 #### Files to Create
-- `backend/src/routes/products.ts`
-- `backend/src/services/productService.ts`
-- `backend/src/middleware/validation.ts`
+- `backend/src/routes/products.rs`
+- `backend/src/services/soroban_service.rs`
+- `backend/src/middleware/validation.rs`
 
 #### Dependencies
-```bash
-npm install express-validator
+```toml
+axum = "0.7"
+tokio = { version = "1.0", features = ["full"] }
+serde = { version = "1.0", features = ["derive"] }
+validator = "0.16"
+thiserror = "1.0"
+soroban-sdk = "21.0"
 ```
 
 #### Estimated Time
@@ -1063,18 +1207,30 @@ Create a beginner-friendly guide for new users.
 1. **Run Tests**
    ```bash
    # Contracts
-   cargo test && cargo clippy
-   
+   cd contracts
+   cargo test
+   cargo clippy -- -D warnings
+   cargo build --target wasm32-unknown-unknown --release
+
    # Frontend
-   npm run build && npm run lint
-   
-   # Backend
+   cd frontend
+   npm run build
+   npm run lint
+   npm run type-check
    npm test
+
+   # Backend
+   cd backend
+   cargo test
+   cargo clippy -- -D warnings
+   cargo fmt --check
    ```
 
 2. **Update Docs**
    - Add/update README if needed
    - Document new features
+   - Update API documentation if endpoints changed
+   - Add utoipa annotations for new endpoints
 
 3. **Commit Convention**
    ```
@@ -1085,93 +1241,881 @@ Create a beginner-friendly guide for new users.
    refactor: code restructure
    test: add tests
    chore: maintenance
+   ci: CI/CD changes
    ```
 
-### PR Template
+### Branch Naming
+
+Use descriptive branch names following this pattern:
+- `feature/issue-23-wallet-connection`
+- `bugfix/issue-45-auth-token-expiry`
+- `hotfix/issue-67-security-patch`
+- `docs/update-api-documentation`
+- `refactor/optimize-database-queries`
+
+### PR Description Template
 
 ```markdown
 ## Description
-[What does this PR do?]
+[Provide a clear and concise description of what this PR does]
+
+## Type of Change
+- [ ] Bug fix (non-breaking change which fixes an issue)
+- [ ] New feature (non-breaking change which adds functionality)
+- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Documentation update
+- [ ] Performance improvement
+- [ ] Code refactoring
 
 ## Related Issue
 Closes #[issue number]
+Related to #[issue number]
 
-## Type
-- [ ] Bug fix
-- [ ] New feature
-- [ ] Breaking change
-- [ ] Documentation
+## Changes Made
+- [ ] Added tests for new functionality
+- [ ] Updated documentation
+- [ ] Updated API documentation (if applicable)
+- [ ] Added/updated utoipa annotations (if applicable)
 
 ## Testing
-- [ ] Tests pass
-- [ ] Manual testing done
+### Manual Testing Steps
+1.
+2.
+3.
 
-## Screenshots
-[If applicable]
+### Automated Tests
+- [ ] All existing tests pass
+- [ ] New tests added and passing
+- [ ] Test coverage maintained or improved
+
+## Screenshots (if applicable)
+[Add screenshots for UI changes]
 
 ## Checklist
-- [ ] Code follows style guide
-- [ ] Self-reviewed
-- [ ] Commented complex code
-- [ ] Docs updated
-- [ ] Tests added
+- [ ] My code follows the style guidelines of this project
+- [ ] I have performed a self-review of my code
+- [ ] I have commented my code, particularly in hard-to-understand areas
+- [ ] I have made corresponding changes to the documentation
+- [ ] My changes generate no new warnings
+- [ ] I have added tests that prove my fix is effective or that my feature works
+- [ ] New and existing unit tests pass locally with my changes
+- [ ] Any dependent changes have been merged and published
+```
+
+### PR Review Process
+
+1. **Self-Review**
+   - Review your own changes before submitting
+   - Ensure all tests pass
+   - Check documentation is complete
+   - Verify no sensitive data is committed
+
+2. **Request Review**
+   - Assign at least one reviewer from the team
+   - Tag relevant team members based on the area of change
+   - Provide context on what needs focus
+
+3. **Address Feedback**
+   - Respond to all review comments
+   - Make requested changes or provide justification
+   - Push updates to the same branch
+   - Request re-review when changes are complete
+
+4. **Merge Requirements**
+   - At least one approval from a maintainer
+   - All CI checks must pass
+   - No merge conflicts
+   - PR must be up-to-date with main branch
+
+---
+
+## 🧪 Testing Requirements
+
+### Smart Contracts (Rust/Soroban)
+
+#### Unit Tests
+```rust
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_product_creation() {
+        let env = Env::default();
+        let product_id = String::from_str("PROD001").unwrap();
+        
+        let product = register_product(env.clone(), product_id.clone(), "Coffee", "Ethiopia");
+        
+        assert_eq!(product.id, product_id);
+        assert_eq!(product.name, "Coffee");
+    }
+}
+```
+
+#### Integration Tests
+```rust
+#[test]
+fn test_full_product_lifecycle() {
+    let env = Env::default();
+    
+    // Register product
+    let product = register_product(env.clone(), "PROD001", "Coffee", "Ethiopia");
+    
+    // Add tracking event
+    let event = add_tracking_event(env.clone(), "PROD001", "Harvest", "Farm");
+    
+    // Retrieve product
+    let retrieved = get_product(env, "PROD001");
+    
+    assert_eq!(retrieved.id, product.id);
+}
+```
+
+#### Coverage Requirements
+- Minimum 80% code coverage for critical paths
+- All public functions must have tests
+- Error cases must be tested
+- Edge cases must be covered
+
+#### Test Commands
+```bash
+# Run all tests
+cargo test
+
+# Run specific test
+cargo test test_product_creation
+
+# Run with output
+cargo test -- --nocapture
+
+# Run tests in release mode
+cargo test --release
 ```
 
 ---
 
+### Frontend (Next.js/TypeScript)
+
+#### Unit Tests
+```typescript
+// components/__tests__/ProductCard.test.tsx
+import { render, screen } from '@testing-library/react';
+import { ProductCard } from '../ProductCard';
+
+describe('ProductCard', () => {
+  it('renders product name', () => {
+    const product = { id: '1', name: 'Coffee' };
+    render(<ProductCard product={product} />);
+    expect(screen.getByText('Coffee')).toBeInTheDocument();
+  });
+});
+```
+
+#### Integration Tests (Playwright)
+```typescript
+// tests/e2e/product-registration.spec.ts
+import { test, expect } from '@playwright/test';
+
+test('user can register a product', async ({ page }) => {
+  await page.goto('/register');
+  await page.fill('[name="productId"]', 'PROD001');
+  await page.fill('[name="name"]', 'Organic Coffee');
+  await page.click('button[type="submit"]');
+  
+  await expect(page).toHaveURL(/\/products\/PROD001/);
+});
+```
+
+#### Coverage Requirements
+- Minimum 70% code coverage for components
+- Critical user flows must have E2E tests
+- All hooks must have unit tests
+- Utility functions must have 100% coverage
+
+#### Test Commands
+```bash
+# Run unit tests
+npm test
+
+# Run with coverage
+npm run test:coverage
+
+# Run E2E tests
+npx playwright test
+
+# Run specific test file
+npm test ProductCard.test.tsx
+```
+
+---
+
+### Backend (Rust/Axum)
+
+#### Unit Tests
+```rust
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[tokio::test]
+    async fn test_get_product() {
+        let pool = create_test_pool().await;
+        let product = create_test_product(&pool).await;
+        
+        let result = get_product(&pool, &product.id).await;
+        
+        assert!(result.is_ok());
+        assert_eq!(result.unwrap().id, product.id);
+    }
+}
+```
+
+#### Integration Tests
+```rust
+#[tokio::test]
+async fn test_product_api_endpoint() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/products/PROD001")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    assert_eq!(response.status(), StatusCode::OK);
+}
+```
+
+#### Coverage Requirements
+- Minimum 80% code coverage for handlers
+- All service functions must have tests
+- Database operations must be tested
+- Error paths must be covered
+
+#### Test Commands
+```bash
+# Run all tests
+cargo test
+
+# Run with output
+cargo test -- --nocapture
+
+# Run specific test
+cargo test test_get_product
+
+# Run tests in release mode
+cargo test --release
+
+# Run with coverage (requires tarpaulin)
+cargo tarpaulin --out Html
+```
+
+---
+
+### General Testing Guidelines
+
+#### Test Organization
+```
+contracts/src/test/
+├── mod.rs              # Test module exports
+├── setup.rs            # Test fixtures and utilities
+├── product_tests.rs    # Product-related tests
+├── event_tests.rs      # Event-related tests
+└── integration_tests.rs # Full workflow tests
+
+frontend/tests/
+├── unit/               # Unit tests
+│   └── components/
+├── integration/        # Integration tests
+└── e2e/               # End-to-end tests
+
+backend/tests/
+├── unit/               # Unit tests
+└── integration/        # Integration tests
+```
+
+#### Test Naming
+```rust
+// Good: Descriptive and specific
+#[test]
+fn test_product_registration_with_valid_data() {}
+
+// Bad: Vague
+#[test]
+fn test_product() {}
+```
+
+#### Test Data Management
+- Use fixtures for common test data
+- Clean up test data after each test
+- Use transactions for database tests
+- Mock external dependencies
+
+#### CI/CD Testing
+All tests must pass in CI before merging:
+- GitHub Actions runs tests on every PR
+- Tests run on multiple OS versions
+- Database tests use test containers
+- E2E tests run on staging environment
+
+---
+
+## ✅ Code Review Checklist
+
+### Before Submitting for Review
+
+**Code Quality**
+- [ ] Code follows project style guidelines
+- [ ] No compiler warnings
+- [ ] No clippy warnings (Rust)
+- [ ] No ESLint warnings (TypeScript)
+- [ ] Code is properly formatted
+- [ ] Complex logic has comments
+- [ ] Magic numbers are replaced with constants
+
+**Functionality**
+- [ ] Feature works as specified
+- [ ] Edge cases are handled
+- [ ] Error handling is comprehensive
+- [ ] Input validation is present
+- [ ] Security best practices followed
+- [ ] Performance considerations addressed
+
+**Testing**
+- [ ] Unit tests added
+- [ ] Integration tests added (if applicable)
+- [ ] E2E tests added (for UI changes)
+- [ ] Tests cover happy path
+- [ ] Tests cover error cases
+- [ ] Test coverage is sufficient
+- [ ] All tests pass locally
+
+**Documentation**
+- [ ] Public APIs documented
+- [ ] Complex algorithms explained
+- [ ] README updated (if needed)
+- [ ] API documentation updated (if endpoints changed)
+- [ ] Changelog updated (if breaking change)
+- [ ] Comments are accurate and up-to-date
+
+**Security**
+- [ ] No secrets or keys committed
+- [ ] User inputs are validated
+- [ ] SQL injection prevention in place
+- [ ] XSS prevention in place (frontend)
+- [ ] Authentication/authorization correct
+- [ ] Rate limiting applied (if public API)
+
+**Performance**
+- [ ] No obvious performance issues
+- [ ] Database queries optimized
+- [ ] Caching used where appropriate
+- [ ] Large data sets handled efficiently
+- [ ] Memory leaks checked
+
+### During Review
+
+**Review Focus Areas**
+- [ ] Code is readable and maintainable
+- [ ] Logic is correct and efficient
+- [ ] Error handling is appropriate
+- [ ] Security vulnerabilities identified
+- [ ] Performance bottlenecks identified
+- [ ] Test coverage is adequate
+- [ ] Documentation is clear
+
+**Review Comments Guidelines**
+- Be constructive and specific
+- Explain the "why" behind suggestions
+- Provide code examples for improvements
+- Ask questions if something is unclear
+- Acknowledge good work
+
+### Before Merging
+
+**Final Checks**
+- [ ] All review comments addressed
+- [ ] CI checks passing
+- [ ] No merge conflicts
+- [ ] Up-to-date with main branch
+- [ ] At least one approval from maintainer
+- [ ] Breaking changes documented
+- [ ] Migration guide provided (if needed)
+
+### Post-Merge
+
+**Follow-up Tasks**
+- [ ] Monitor production for issues
+- [ ] Update issue tracker
+- [ ] Close related issues
+- [ ] Notify team of deployment
+- [ ] Update documentation website (if applicable)
+- [ ] Create release notes (if needed)
+
+---
+
 ## 🎨 Code Style Guidelines
 
-### Smart Contracts (Rust)
+### Smart Contracts (Rust/Soroban)
+
+#### Naming Conventions
 ```rust
-// Good naming
+// Functions: snake_case
 pub fn register_product() {} ✅
 pub fn reg_prod() {}          ❌
 
-// Document public APIs
-/// Registers a new product.
-pub fn register_product() {}
+// Structs: PascalCase
+pub struct Product {}         ✅
+pub struct product {}         ❌
+
+// Constants: SCREAMING_SNAKE_CASE
+pub const MAX_PRODUCTS: u32 = 1000;  ✅
+pub const max_products: u32 = 1000;  ❌
+
+// Storage keys: SymbolShort
+let key = symbol_short!("PRODUCT");  ✅
+let key = symbol_short!("product");  ❌
+```
+
+#### Documentation
+```rust
+/// Registers a new product on the blockchain.
+///
+/// # Arguments
+///
+/// * `product_id` - Unique identifier for the product
+/// * `name` - Human-readable product name
+/// * `origin` - Geographic origin location
+///
+/// # Returns
+///
+/// Returns the newly created Product struct.
+///
+/// # Errors
+///
+/// Returns `Error::AlreadyExists` if product_id is already registered.
+///
+/// # Example
+///
+/// ```
+/// let product = register_product(env, "PROD001", "Coffee", "Ethiopia");
+/// ```
+pub fn register_product(
+    env: Env,
+    product_id: String,
+    name: String,
+    origin: String,
+) -> Product {
+    // implementation
+}
+```
+
+#### Error Handling
+```rust
+// Use custom error types
+#[derive(Error, Debug)]
+pub enum Error {
+    #[error("Product already exists")]
+    AlreadyExists,
+    #[error("Unauthorized access")]
+    Unauthorized,
+}
+
+// Panic with errors for contract failures
+if product_exists {
+    panic_with_error!(&env, Error::AlreadyExists);
+}
+```
+
+#### Code Organization
+```rust
+// File structure
+src/
+├── lib.rs           # Contract entry point
+├── contract.rs      # Main contract logic
+├── types.rs         # Data structures
+├── storage.rs       # Storage helpers
+├── error.rs         # Error types
+├── events.rs        # Event emission
+└── validation.rs    # Input validation
+
+// Use modules for organization
+pub mod types;
+pub mod storage;
+pub mod error;
+
+use crate::types::{Product, Event};
+use crate::storage::{get_product, set_product};
+```
 
-// Format & lint
+#### Format & Lint
+```bash
+# Format code
 cargo fmt
-cargo clippy
+
+# Check for issues
+cargo clippy -- -D warnings
+
+# Run tests
+cargo test
+
+# Build for WASM
+cargo build --target wasm32-unknown-unknown --release
 ```
 
-### Frontend (TypeScript)
+---
+
+### Frontend (Next.js/TypeScript)
+
+#### Naming Conventions
 ```typescript
-// Strict TypeScript
+// Components: PascalCase
+export function ProductCard() {}     ✅
+export function productCard() {}     ❌
+
+// Functions: camelCase
+function getUserData() {}           ✅
+function get_user_data() {}         ❌
+
+// Constants: UPPER_SNAKE_CASE
+const MAX_RETRIES = 3;              ✅
+const maxRetries = 3;               ❌
+
+// Types/Interfaces: PascalCase
+interface UserProfile {}            ✅
+interface userProfile {}            ❌
+```
+
+#### Component Structure
+```typescript
+// Use functional components with hooks
+export function ProductCard({ product }: ProductCardProps) {
+  const [loading, setLoading] = useState(false);
+
+  useEffect(() => {
+    // effect logic
+  }, [product.id]);
+
+  if (loading) return <LoadingSpinner />;
+
+  return <div>{product.name}</div>;
+}
+
+// Define props interface
+interface ProductCardProps {
+  product: Product;
+  onEdit?: () => void;
+}
+```
+
+#### TypeScript Best Practices
+```typescript
+// Always define types
 interface Product {
   id: string;
   name: string;
+  origin: string;
 }
 
-// Functional components
-export function ProductCard({ product }: { product: Product }) {
-  return <div>{product.name}</div>;
-}
+// Avoid `any`
+function processData(data: any) {}      ❌
+function processData(data: Product) {}  ✅
+
+// Use union types for variants
+type EventStatus = 'pending' | 'confirmed' | 'failed';
 
-// Organize imports
-import { useState } from 'react';          // React
-import { Contract } from '@stellar/sdk';   // Packages
-import { format } from '@/lib/utils';      // Local
+// Use generics for reusable types
+interface ApiResponse<T> {
+  data: T;
+  error: string | null;
+}
 ```
 
-### Backend (TypeScript)
+#### Import Organization
 ```typescript
-// Async/await
-async function getProduct(id: string) {
-  return await contract.get_product({ id });
+// 1. React and hooks
+import { useState, useEffect } from 'react';
+
+// 2. Third-party libraries
+import { Contract } from '@stellar/stellar-sdk';
+import { useRouter } from 'next/navigation';
+
+// 3. Internal modules
+import { Product } from '@/types/product';
+import { useWallet } from '@/hooks/useWallet';
+import { formatAddress } from '@/lib/utils';
+```
+
+#### File Organization
+```
+app/
+├── layout.tsx           # Root layout
+├── page.tsx             # Homepage
+└── products/
+    ├── page.tsx         # Products list
+    └── [id]/
+        └── page.tsx     # Product detail
+
+components/
+├── ui/                  # Reusable UI components
+├── forms/               # Form components
+├── wallet/              # Wallet-related
+└── tracking/            # Tracking components
+
+lib/
+├── stellar/             # Stellar SDK utilities
+├── utils/               # Helper functions
+└── hooks/               # Custom hooks
+```
+
+#### Linting & Formatting
+```bash
+# Format code
+npm run format
+
+# Lint code
+npm run lint
+
+# Type check
+npm run type-check
+
+# Run tests
+npm test
+
+# Build for production
+npm run build
+```
+
+---
+
+### Backend (Rust/Axum)
+
+#### Naming Conventions
+```rust
+// Structs: PascalCase
+pub struct AppState {}        ✅
+pub struct app_state {}      ❌
+
+// Functions: snake_case
+pub async fn get_product() {}    ✅
+pub async fn getProduct() {}     ❌
+
+// Constants: SCREAMING_SNAKE_CASE
+pub const API_VERSION: &str = "v1";  ✅
+pub const api_version: &str = "v1";  ❌
+```
+
+#### Handler Structure
+```rust
+// Use proper error handling
+pub async fn get_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<ProductResponse>, AppError> {
+    let product = state.product_service
+        .get_product(&id)
+        .await
+        .map_err(|_| AppError::NotFound("Product not found".to_string()))?;
+
+    Ok(Json(product.into()))
 }
+```
 
-// Error handling
-try {
-  const product = await getProduct(id);
-  res.json(product);
-} catch (error) {
-  logger.error('Error fetching product', { id, error });
-  res.status(500).json({ error: 'Internal error' });
+#### Database Queries
+```rust
+// Use SQLx for type-safe queries
+pub async fn get_product(
+    pool: &PgPool,
+    id: &str,
+) -> Result<Product, sqlx::Error> {
+    sqlx::query_as!(
+        Product,
+        r#"
+        SELECT id, name, description, origin_location, category, tags,
+               certifications, media_hashes, custom_fields, owner_address,
+               is_active, created_at, updated_at, created_by, updated_by
+        FROM products
+        WHERE id = $1
+        "#,
+        id
+    )
+    .fetch_one(pool)
+    .await
+}
+```
+
+#### Error Handling
+```rust
+// Define custom error types
+#[derive(Debug)]
+pub enum AppError {
+    NotFound(String),
+    Unauthorized(String),
+    ValidationError(String),
+    DatabaseError(String),
+    InternalError(String),
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, message) = match self {
+            AppError::NotFound(msg) => (StatusCode::NOT_FOUND, msg),
+            AppError::Unauthorized(msg) => (StatusCode::UNAUTHORIZED, msg),
+            AppError::ValidationError(msg) => (StatusCode::BAD_REQUEST, msg),
+            AppError::DatabaseError(msg) => (StatusCode::INTERNAL_SERVER_ERROR, msg),
+            AppError::InternalError(msg) => (StatusCode::INTERNAL_SERVER_ERROR, msg),
+        };
+
+        (status, Json(json!({ "error": message }))).into_response()
+    }
+}
+```
+
+#### Validation
+```rust
+// Validate inputs before processing
+use crate::validation::{validate_string, validate_stellar_address};
+
+pub async fn create_product(
+    State(state): State<AppState>,
+    Json(req): Json<CreateProductRequest>,
+) -> Result<Json<ProductResponse>, AppError> {
+    // Validate inputs
+    validate_string("name", &req.name, 100)?;
+    validate_stellar_address(&req.owner_address)?;
+    validate_string("origin", &req.origin, 200)?;
+
+    // Process request
+    let product = state.product_service.create_product(req).await?;
+
+    Ok(Json(product))
+}
+```
+
+#### OpenAPI Documentation
+```rust
+// Add utoipa annotations for all public endpoints
+#[utoipa::path(
+    get,
+    path = "/api/v1/products/{id}",
+    tag = "products",
+    params(
+        ("id" = String, Path, description = "Product ID")
+    ),
+    responses(
+        (status = 200, description = "Product retrieved successfully", body = ProductResponse),
+        (status = 404, description = "Product not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<ProductResponse>, AppError> {
+    // implementation
 }
 ```
 
+#### Format & Lint
+```bash
+# Format code
+cargo fmt
+
+# Check for issues
+cargo clippy -- -D warnings
+
+# Run tests
+cargo test
+
+# Run with database
+cargo run
+
+# Build for release
+cargo build --release
+```
+
+---
+
+### General Guidelines
+
+#### Git Commit Messages
+```
+<type>(<scope>): <subject>
+
+<body>
+
+<footer>
+```
+
+**Types:**
+- `feat`: New feature
+- `fix`: Bug fix
+- `docs`: Documentation changes
+- `style`: Code style changes (formatting, etc.)
+- `refactor`: Code refactoring
+- `perf`: Performance improvements
+- `test`: Test additions/changes
+- `chore`: Maintenance tasks
+- `ci`: CI/CD changes
+
+**Examples:**
+```
+feat(products): add batch product registration
+
+Implements batch registration for multiple products
+in a single transaction to reduce gas costs.
+
+Closes #23
+```
+
+```
+fix(auth): resolve JWT token expiration issue
+
+Fixed token validation logic that was incorrectly
+rejecting valid tokens near expiration time.
+
+Closes #45
+```
+
+#### Code Comments
+```rust
+// GOOD: Explain WHY, not WHAT
+// We use a cache here because the blockchain RPC calls
+// are expensive and can take up to 2 seconds
+let cached_product = cache.get(&product_id).await;
+
+// BAD: Obvious comments
+// Get the product from cache
+let cached_product = cache.get(&product_id).await;
+
+// GOOD: Document complex logic
+// This algorithm calculates the optimal route by considering
+// both distance and carbon footprint, with a 60% weight on
+// environmental impact
+let optimal_route = calculate_route(locations, carbon_weights);
+
+// GOOD: TODO comments with context
+// TODO: Add retry logic for network failures
+// Currently fails silently on network errors
+// Issue: #67
+```
+
+#### Security Best Practices
+- Never commit secrets or API keys
+- Use environment variables for configuration
+- Validate all user inputs
+- Sanitize data before database operations
+- Use parameterized queries to prevent SQL injection
+- Implement rate limiting on public endpoints
+- Use HTTPS in production
+- Keep dependencies updated
+
 ---
 
 ## 🆘 Getting Help
@@ -1190,4 +2134,4 @@ Contributors are featured in:
 - Release notes
 - Annual blog post
 
-Thank you for contributing to ChainLojistic! 🌍✨
\ No newline at end of file
+Thank you for contributing to ChainLojistic! 🌍✨
diff --git a/DEPLOYMENT.md b/DEPLOYMENT.md
new file mode 100644
index 00000000..a8192776
--- /dev/null
+++ b/DEPLOYMENT.md
@@ -0,0 +1,1028 @@
+# ChainLogistics Deployment Guide
+
+This comprehensive guide explains how to deploy the ChainLogistics stack including smart contracts, backend API, and frontend application to production environments.
+
+## Table of Contents
+
+- [Deployment Overview](#deployment-overview)
+- [Prerequisites](#prerequisites)
+- [Environment Configuration](#environment-configuration)
+- [Docker Deployment](#docker-deployment)
+- [Manual Deployment](#manual-deployment)
+- [Smart Contract Deployment](#smart-contract-deployment)
+- [Backend Deployment](#backend-deployment)
+- [Frontend Deployment](#frontend-deployment)
+- [Production Checklist](#production-checklist)
+- [Troubleshooting Guide](#troubleshooting-guide)
+- [Monitoring and Maintenance](#monitoring-and-maintenance)
+
+---
+
+## Deployment Overview
+
+ChainLogistics consists of three main components:
+
+1. **Smart Contracts** (Rust/Soroban) - Deployed to Stellar blockchain
+2. **Backend API** (Rust/Axum) - REST API server with PostgreSQL and Redis
+3. **Frontend** (Next.js/TypeScript) - Web application
+
+**Deployment Options:**
+- **Docker Compose** - Recommended for development and small production deployments
+- **Manual Deployment** - For custom infrastructure and scaling requirements
+- **Cloud Services** - AWS, GCP, Azure deployment guides
+
+---
+
+## Prerequisites
+
+### System Requirements
+
+- **Operating System**: Linux (Ubuntu 20.04+ recommended) or macOS
+- **RAM**: Minimum 4GB (8GB recommended)
+- **Disk Space**: 20GB free space
+- **CPU**: 2+ cores
+
+### Software Requirements
+
+- **Docker**: 20.10+ and Docker Compose 2.0+
+- **Rust**: 1.70+ (for manual builds)
+- **Node.js**: 18+ (for manual frontend builds)
+- **PostgreSQL Client**: 14+ (for manual database setup)
+- **Soroban CLI**: Latest version (for smart contract deployment)
+
+### Required Accounts
+
+- **Stellar Account**: With testnet XLM for contract deployment
+- **Domain Name**: For production deployment (optional but recommended)
+- **SSL Certificate**: For HTTPS (Let's Encrypt recommended)
+
+### Install Docker and Docker Compose
+
+```bash
+# Install Docker
+curl -fsSL https://get.docker.com -o get-docker.sh
+sudo sh get-docker.sh
+
+# Add your user to docker group
+sudo usermod -aG docker $USER
+
+# Install Docker Compose
+sudo curl -L "https://github.com/docker/compose/releases/download/v2.20.0/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
+sudo chmod +x /usr/local/bin/docker-compose
+
+# Verify installation
+docker --version
+docker-compose --version
+```
+
+---
+
+## Environment Configuration
+
+### Environment Variables
+
+Create environment files for each component:
+
+#### Backend (`.env`)
+
+```bash
+# Database Configuration
+DATABASE_URL=postgres://chainlogistics:your_secure_password@localhost:5432/chainlogistics
+DATABASE_POOL_SIZE=10
+
+# Redis Configuration
+REDIS_URL=redis://localhost:6379
+
+# Server Configuration
+HOST=0.0.0.0
+PORT=3001
+RUST_LOG=info
+
+# JWT Configuration
+JWT_SECRET=your_jwt_secret_key_min_32_chars
+JWT_EXPIRATION=24h
+
+# Stellar Configuration
+STELLAR_NETWORK=testnet
+STELLAR_RPC_URL=https://soroban-testnet.stellar.org
+CONTRACT_ID=your_deployed_contract_id
+
+# API Rate Limiting
+RATE_LIMIT_ENABLED=true
+RATE_LIMIT_PER_MINUTE=60
+
+# CORS Configuration
+CORS_ALLOWED_ORIGINS=https://yourdomain.com,https://www.yourdomain.com
+
+# SSL/TLS (Production)
+SSL_CERT_PATH=/etc/nginx/ssl/cert.pem
+SSL_KEY_PATH=/etc/nginx/ssl/key.pem
+```
+
+#### Frontend (`.env.local`)
+
+```bash
+# API Configuration
+NEXT_PUBLIC_API_URL=https://api.yourdomain.com
+NEXT_PUBLIC_WS_URL=wss://api.yourdomain.com
+
+# Stellar Configuration
+NEXT_PUBLIC_STELLAR_NETWORK=testnet
+NEXT_PUBLIC_CONTRACT_ID=your_deployed_contract_id
+NEXT_PUBLIC_STELLAR_RPC_URL=https://soroban-testnet.stellar.org
+
+# Feature Flags
+NEXT_PUBLIC_ENABLE_ANALYTICS=true
+NEXT_PUBLIC_ENABLE_QR_SCANNING=true
+```
+
+#### Docker Compose (`.env`)
+
+```bash
+# Database
+POSTGRES_DB=chainlogistics
+POSTGRES_USER=chainlogistics
+POSTGRES_PASSWORD=your_secure_password
+
+# Redis
+REDIS_PASSWORD=your_redis_password
+
+# Backend
+BACKEND_PORT=3001
+
+# Monitoring
+GRAFANA_ADMIN_PASSWORD=your_grafana_password
+```
+
+### Security Configuration
+
+#### Generate Secure Passwords
+
+```bash
+# Generate random passwords
+openssl rand -base64 32
+
+# Generate JWT secret
+openssl rand -base64 48
+```
+
+#### SSL Certificate Setup (Production)
+
+```bash
+# Install Certbot
+sudo apt-get install certbot python3-certbot-nginx
+
+# Generate certificate
+sudo certbot --nginx -d api.yourdomain.com -d yourdomain.com
+
+# Auto-renewal is configured automatically
+sudo certbot renew --dry-run
+```
+
+---
+
+## Docker Deployment
+
+### Quick Start
+
+```bash
+# Clone repository
+git clone https://github.com/ChainLojistics/ChainLogistics.git
+cd ChainLogistics
+
+# Create environment files
+cp backend/.env.example backend/.env
+cp frontend/.env.example frontend/.env.local
+cp .env.example .env
+
+# Edit environment files with your configuration
+nano backend/.env
+nano frontend/.env.local
+nano .env
+
+# Start all services
+docker-compose up -d
+
+# Check service status
+docker-compose ps
+docker-compose logs -f
+```
+
+### Service Management
+
+```bash
+# Start services
+docker-compose up -d
+
+# Stop services
+docker-compose down
+
+# Stop and remove volumes
+docker-compose down -v
+
+# Restart specific service
+docker-compose restart backend
+
+# View logs
+docker-compose logs backend
+docker-compose logs -f  # Follow logs
+
+# Scale services
+docker-compose up -d --scale backend=3
+```
+
+### Database Initialization
+
+```bash
+# Run migrations
+docker-compose exec backend cargo run --bin migrate
+
+# Create admin user
+docker-compose exec backend cargo run --bin create-admin
+
+# Seed initial data (optional)
+docker-compose exec backend cargo run --bin seed
+```
+
+### Health Checks
+
+```bash
+# Check backend health
+curl http://localhost:3001/health
+
+# Check database health
+curl http://localhost:3001/health/db
+
+# Check all services
+docker-compose ps
+```
+
+---
+
+## Manual Deployment
+
+### Backend Deployment
+
+#### 1. Install Dependencies
+
+```bash
+# Install Rust
+curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
+source $HOME/.cargo/env
+
+# Install PostgreSQL
+sudo apt-get install postgresql postgresql-contrib
+
+# Install Redis
+sudo apt-get install redis-server
+
+# Install system libraries
+sudo apt-get install libssl-dev pkg-config libudev-dev
+```
+
+#### 2. Setup Database
+
+```bash
+# Create database
+sudo -u postgres psql
+CREATE DATABASE chainlogistics;
+CREATE USER chainlogistics WITH PASSWORD 'your_password';
+GRANT ALL PRIVILEGES ON DATABASE chainlogistics TO chainlogistics;
+\q
+
+# Run migrations
+cd backend
+cargo install sqlx-cli
+sqlx migrate run --database-url postgres://chainlogistics:your_password@localhost/chainlogistics
+```
+
+#### 3. Configure Backend
+
+```bash
+cd backend
+cp .env.example .env
+nano .env
+# Edit with your configuration
+```
+
+#### 4. Build and Run
+
+```bash
+# Build release
+cargo build --release
+
+# Run server
+./target/release/chainlogistics-backend
+
+# Or run with systemd (recommended for production)
+sudo nano /etc/systemd/system/chainlogistics-backend.service
+```
+
+#### 5. Systemd Service
+
+```ini
+[Unit]
+Description=ChainLogistics Backend API
+After=network.target postgresql.service redis.service
+
+[Service]
+Type=simple
+User=chainlogistics
+WorkingDirectory=/home/chainlogistics/backend
+ExecStart=/home/chainlogistics/backend/target/release/chainlogistics-backend
+Environment="DATABASE_URL=postgres://chainlogistics:password@localhost/chainlogistics"
+Environment="REDIS_URL=redis://localhost:6379"
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target
+```
+
+```bash
+# Enable and start service
+sudo systemctl enable chainlogistics-backend
+sudo systemctl start chainlogistics-backend
+sudo systemctl status chainlogistics-backend
+```
+
+### Frontend Deployment
+
+#### 1. Install Dependencies
+
+```bash
+# Install Node.js
+curl -fsSL https://deb.nodesource.com/setup_18.x | sudo -E bash -
+sudo apt-get install -y nodejs
+
+# Install PM2 (process manager)
+sudo npm install -g pm2
+```
+
+#### 2. Build Frontend
+
+```bash
+cd frontend
+npm install
+cp .env.example .env.local
+nano .env.local
+# Edit with your configuration
+
+# Build production bundle
+npm run build
+```
+
+#### 3. Serve with PM2
+
+```bash
+# Install next server globally
+npm install -g next
+
+# Start with PM2
+pm2 start npm --name "chainlogistics-frontend" -- start
+
+# Save PM2 configuration
+pm2 save
+pm2 startup
+```
+
+#### 4. Nginx Configuration
+
+```nginx
+server {
+    listen 80;
+    server_name yourdomain.com www.yourdomain.com;
+
+    # Redirect to HTTPS
+    return 301 https://$server_name$request_uri;
+}
+
+server {
+    listen 443 ssl http2;
+    server_name yourdomain.com www.yourdomain.com;
+
+    ssl_certificate /etc/letsencrypt/live/yourdomain.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/yourdomain.com/privkey.pem;
+
+    # Frontend
+    location / {
+        proxy_pass http://localhost:3000;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_cache_bypass $http_upgrade;
+    }
+
+    # Backend API
+    location /api {
+        proxy_pass http://localhost:3001;
+        proxy_http_version 1.1;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    # WebSocket support
+    location /ws {
+        proxy_pass http://localhost:3001;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "Upgrade";
+        proxy_set_header Host $host;
+    }
+}
+```
+
+```bash
+# Enable Nginx configuration
+sudo ln -s /etc/nginx/sites-available/chainlogistics /etc/nginx/sites-enabled/
+sudo nginx -t
+sudo systemctl reload nginx
+```
+
+---
+
+## Smart Contract Deployment
+
+### Prerequisites
+
+```bash
+# Install Soroban CLI
+cargo install --locked soroban-cli --features opt
+
+# Add WASM target
+rustup target add wasm32-unknown-unknown
+```
+
+### Get Testnet Account
+
+```bash
+# Generate keypair
+soroban keys generate --global testnet-key
+
+# Fund account with friendbot
+soroban keys fund testnet-key --network testnet
+
+# Verify balance
+soroban keys address testnet-key
+```
+
+### Deploy Contract
+
+```bash
+cd smart-contract/contracts
+
+# Build WASM
+cargo build --target wasm32-unknown-unknown --release
+
+# Deploy to testnet
+soroban contract deploy \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics.wasm \
+  --source testnet-key \
+  --network testnet
+
+# Save the contract ID output
+```
+
+### Verify Deployment
+
+```bash
+# Test contract invocation
+soroban contract invoke \
+  --id YOUR_CONTRACT_ID \
+  --source testnet-key \
+  --network testnet \
+  -- ping
+```
+
+### Mainnet Deployment
+
+**WARNING:** Mainnet deployment involves real XLM costs. Test thoroughly on testnet first.
+
+```bash
+# Use mainnet network
+soroban contract deploy \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics.wasm \
+  --source mainnet-key \
+  --network pubnet
+
+# Update environment variables
+echo "CONTRACT_ID=YOUR_MAINNET_CONTRACT_ID" >> backend/.env
+echo "NEXT_PUBLIC_CONTRACT_ID=YOUR_MAINNET_CONTRACT_ID" >> frontend/.env.local
+echo "STELLAR_NETWORK=mainnet" >> backend/.env
+echo "NEXT_PUBLIC_STELLAR_NETWORK=mainnet" >> frontend/.env.local
+```
+
+---
+
+## Backend Deployment
+
+### Using Docker
+
+```bash
+# Build backend image
+docker build -t chainlogistics-backend:latest ./backend
+
+# Run container
+docker run -d \
+  --name chainlogistics-backend \
+  -p 3001:3001 \
+  --env-file backend/.env \
+  --network chainlogistics-network \
+  chainlogistics-backend:latest
+```
+
+### Using Systemd
+
+See the [Manual Deployment](#manual-deployment) section above for systemd service configuration.
+
+### Database Backup
+
+```bash
+# Manual backup
+docker-compose exec postgres pg_dump -U chainlogistics chainlogistics > backup.sql
+
+# Restore backup
+docker-compose exec -T postgres psql -U chainlogistics chainlogistics < backup.sql
+
+# Automated backup (cron)
+0 2 * * * docker-compose exec postgres pg_dump -U chainlogistics chainlogistics > /backups/chainlogistics_$(date +\%Y\%m\%d).sql
+```
+
+---
+
+## Frontend Deployment
+
+### Using Docker
+
+```bash
+# Build frontend image
+docker build -t chainlogistics-frontend:latest ./frontend
+
+# Run container
+docker run -d \
+  --name chainlogistics-frontend \
+  -p 3000:3000 \
+  --env-file frontend/.env.local \
+  chainlogistics-frontend:latest
+```
+
+### Using Vercel (Recommended)
+
+```bash
+# Install Vercel CLI
+npm install -g vercel
+
+# Deploy
+cd frontend
+vercel
+
+# Configure environment variables in Vercel dashboard
+# - NEXT_PUBLIC_API_URL
+# - NEXT_PUBLIC_CONTRACT_ID
+# - NEXT_PUBLIC_STELLAR_NETWORK
+```
+
+### Using Netlify
+
+```bash
+# Install Netlify CLI
+npm install -g netlify-cli
+
+# Build and deploy
+cd frontend
+netlify deploy --prod
+```
+
+---
+
+## Production Checklist
+
+### Pre-Deployment
+
+- [ ] All tests passing (unit, integration, E2E)
+- [ ] Code reviewed and approved
+- [ ] Security audit completed
+- [ ] Environment variables configured
+- [ ] SSL certificates obtained
+- [ ] Domain DNS configured
+- [ ] Database backups enabled
+- [ ] Monitoring configured
+- [ ] Logging configured
+- [ ] Rate limiting enabled
+- [ ] CORS configured correctly
+- [ ] Smart contract audited (if mainnet)
+
+### Post-Deployment
+
+- [ ] Health checks passing
+- [ ] Database migrations successful
+- [ ] API endpoints responding
+- [ ] Frontend loading correctly
+- [ ] Smart contract accessible
+- [ ] Wallet connection working
+- [ ] Event tracking functional
+- [ ] QR generation working
+- [ ] Timeline displaying correctly
+- [ ] Analytics collecting data
+- [ ] Error monitoring active
+- [ ] Backup system verified
+- [ ] Rollback plan documented
+
+### Security Checklist
+
+- [ ] No secrets in code
+- [ ] Environment variables secured
+- [ ] Database credentials strong
+- [ ] API keys rotated
+- [ ] HTTPS enforced
+- [ ] Security headers configured
+- [ ] Rate limiting active
+- [ ] Input validation enabled
+- [ ] SQL injection prevention
+- [ ] XSS prevention
+- [ ] CSRF protection
+- [ ] Authentication working
+- [ ] Authorization working
+
+---
+
+## Troubleshooting Guide
+
+### Database Issues
+
+#### Connection Refused
+
+```bash
+# Check PostgreSQL status
+sudo systemctl status postgresql
+
+# Check if running
+sudo systemctl start postgresql
+
+# Check connection
+psql -U chainlogistics -d chainlogistics -h localhost
+```
+
+#### Migration Failures
+
+```bash
+# Check migration status
+cd backend
+sqlx migrate info --database-url postgres://chainlogistics:password@localhost/chainlogistics
+
+# Revert last migration
+sqlx migrate revert --database-url postgres://chainlogistics:password@localhost/chainlogistics
+
+# Force re-run migrations
+sqlx migrate run --force --database-url postgres://chainlogistics:password@localhost/chainlogistics
+```
+
+#### Slow Queries
+
+```bash
+# Enable slow query log
+sudo nano /etc/postgresql/14/main/postgresql.conf
+# Add: log_min_duration_statement = 1000
+
+# Restart PostgreSQL
+sudo systemctl restart postgresql
+
+# Analyze slow queries
+cd backend
+cargo install pgbench
+pgbench -h localhost -U chainlogistics -d chainlogistics
+```
+
+### Backend Issues
+
+#### Server Won't Start
+
+```bash
+# Check logs
+journalctl -u chainlogistics-backend -f
+
+# Check port availability
+netstat -tulpn | grep 3001
+
+# Kill process using port
+sudo fuser -k 3001/tcp
+
+# Check environment variables
+cat backend/.env
+```
+
+#### Out of Memory
+
+```bash
+# Check memory usage
+free -h
+
+# Check process memory
+ps aux | grep chainlogistics
+
+# Increase swap
+sudo fallocate -l 2G /swapfile
+sudo chmod 600 /swapfile
+sudo mkswap /swapfile
+sudo swapon /swapfile
+```
+
+#### Database Connection Pool Exhausted
+
+```bash
+# Check active connections
+docker-compose exec postgres psql -U chainlogistics -d chainlogistics -c "SELECT count(*) FROM pg_stat_activity;"
+
+# Kill idle connections
+docker-compose exec postgres psql -U chainlogistics -d chainlogistics -c "SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE state = 'idle';"
+
+# Increase pool size in .env
+DATABASE_POOL_SIZE=20
+```
+
+### Frontend Issues
+
+#### Build Failures
+
+```bash
+# Clear cache
+cd frontend
+rm -rf .next node_modules
+npm install
+
+# Check Node.js version
+node --version  # Should be 18+
+
+# Update dependencies
+npm update
+```
+
+#### Environment Variables Not Loading
+
+```bash
+# Verify .env.local exists
+ls -la frontend/.env.local
+
+# Check file permissions
+chmod 644 frontend/.env.local
+
+# Restart dev server
+npm run dev
+```
+
+#### API Connection Errors
+
+```bash
+# Check backend is running
+curl http://localhost:3001/health
+
+# Check CORS configuration
+# Ensure NEXT_PUBLIC_API_URL matches backend URL
+
+# Check network
+curl -v https://api.yourdomain.com/health
+```
+
+### Docker Issues
+
+#### Container Won't Start
+
+```bash
+# Check container logs
+docker-compose logs backend
+
+# Check container status
+docker-compose ps
+
+# Rebuild container
+docker-compose up -d --build backend
+
+# Remove and recreate
+docker-compose down -v
+docker-compose up -d
+```
+
+#### Volume Mount Issues
+
+```bash
+# Check volume permissions
+docker-compose exec backend ls -la /backups
+
+# Fix permissions
+sudo chown -R $USER:$USER ./backups
+
+# Check disk space
+df -h
+```
+
+#### Network Issues
+
+```bash
+# Check network
+docker network ls
+docker network inspect chainlogistics-network
+
+# Recreate network
+docker network rm chainlogistics-network
+docker-compose up -d
+```
+
+### Smart Contract Issues
+
+#### Deployment Failed
+
+```bash
+# Check account balance
+soroban keys address testnet-key
+soroban keys fund testnet-key --network testnet
+
+# Check network connectivity
+curl https://soroban-testnet.stellar.org
+
+# Verify WASM file
+ls -lh target/wasm32-unknown-unknown/release/chainlogistics.wasm
+```
+
+#### Transaction Failed
+
+```bash
+# Check transaction status
+soroban contract tx-status YOUR_TRANSACTION_ID --network testnet
+
+# Check gas fees
+soroban contract fee \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics.wasm \
+  --source testnet-key \
+  --network testnet
+
+# Retry with higher fee
+soroban contract deploy \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics.wasm \
+  --source testnet-key \
+  --network testnet \
+  --fee 100000
+```
+
+### Performance Issues
+
+#### Slow API Response
+
+```bash
+# Enable profiling
+RUST_LOG=debug cargo run
+
+# Check database query performance
+docker-compose exec postgres psql -U chainlogistics -d chainlogistics -c "EXPLAIN ANALYZE SELECT * FROM products;"
+
+# Check Redis cache hit rate
+docker-compose exec redis redis-cli INFO stats
+```
+
+#### High Memory Usage
+
+```bash
+# Check Rust memory usage
+cargo install valgrind
+valgrind --leak-check=full ./target/release/chainlogistics-backend
+
+# Enable memory profiling
+export RUST_LOG=info,chainlogistics=debug
+```
+
+### SSL/TLS Issues
+
+#### Certificate Errors
+
+```bash
+# Check certificate expiration
+sudo certbot certificates
+
+# Renew certificate
+sudo certbot renew
+
+# Force renewal
+sudo certbot renew --force-renewal
+
+# Check Nginx configuration
+sudo nginx -t
+```
+
+#### Mixed Content Errors
+
+```bash
+# Ensure all resources use HTTPS
+# Check browser console for mixed content warnings
+
+# Update Nginx configuration
+# Add HSTS header
+add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+```
+
+---
+
+## Monitoring and Maintenance
+
+### Health Checks
+
+```bash
+# Backend health
+curl http://localhost:3001/health
+
+# Database health
+curl http://localhost:3001/health/db
+
+# Overall system status
+docker-compose ps
+```
+
+### Log Management
+
+```bash
+# View backend logs
+docker-compose logs -f backend
+
+# View all logs
+docker-compose logs -f
+
+# Rotate logs (logrotate)
+sudo nano /etc/logrotate.d/chainlogistics
+```
+
+### Database Maintenance
+
+```bash
+# Weekly vacuum
+docker-compose exec postgres psql -U chainlogistics -d chainlogistics -c "VACUUM ANALYZE;"
+
+# Reindex
+docker-compose exec postgres psql -U chainlogistics -d chainlogistics -c "REINDEX DATABASE chainlogistics;"
+
+# Backup
+docker-compose exec postgres pg_dump -U chainlogistics chainlogistics > backup.sql
+```
+
+### Updates and Upgrades
+
+```bash
+# Pull latest changes
+git pull origin main
+
+# Rebuild and restart
+docker-compose down
+docker-compose pull
+docker-compose up -d --build
+
+# Run migrations
+docker-compose exec backend cargo run --bin migrate
+```
+
+### Backup Strategy
+
+```bash
+# Automated backup script
+#!/bin/bash
+DATE=$(date +%Y%m%d_%H%M%S)
+BACKUP_DIR="/backups"
+mkdir -p $BACKUP_DIR
+
+# Database backup
+docker-compose exec postgres pg_dump -U chainlogistics chainlogistics > $BACKUP_DIR/db_$DATE.sql
+
+# Config backup
+tar -czf $BACKUP_DIR/config_$DATE.tar.gz backend/.env frontend/.env.local
+
+# Keep last 7 days
+find $BACKUP_DIR -name "*.sql" -mtime +7 -delete
+find $BACKUP_DIR -name "*.tar.gz" -mtime +7 -delete
+```
+
+### Security Updates
+
+```bash
+# Update system packages
+sudo apt-get update && sudo apt-get upgrade -y
+
+# Update Docker images
+docker-compose pull
+
+# Scan for vulnerabilities
+docker scan chainlogistics-backend:latest
+```
+
+---
+
+## Support and Resources
+
+- **Documentation**: https://docs.chainlogistics.io
+- **GitHub Issues**: https://github.com/ChainLojistics/ChainLogistics/issues
+- **Discord Community**: https://discord.gg/chainlogistics
+- **Email Support**: support@chainlogistics.io
+
+---
+
+## License
+
+This deployment guide is part of the ChainLogistics project. See LICENSE for details.
diff --git a/Readme.md b/Readme.md
index b5f4c956..b008d4d2 100644
--- a/Readme.md
+++ b/Readme.md
@@ -4,6 +4,13 @@
 
 ChainLojistic is an open-source, blockchain-based supply chain provenance tracker built on Stellar's Soroban platform. It enables transparent, tamper-proof tracking of products from origin to consumer, solving trust and verification issues in global supply chains.
 
+## Contract Address
+
+CBUWSKT2UGOAXK4ZREVDJV5XHSYB42PZ3CERU2ZFUTUMAZLJEHNZIECA
+NEXT_PUBLIC_CONTRACT_ID=CBUWSKT2UGOAXK4ZREVDJV5XHSYB42PZ3CERU2ZFUTUMAZLJEHNZIECA
+NEXT_PUBLIC_STELLAR_NETWORK=testnet
+
+
 ## 🎯 The Problem
 
 Modern supply chains face critical trust challenges:
@@ -65,11 +72,13 @@ ChainLojistic provides a decentralized, immutable ledger for supply chain tracki
 - QR code generation
 - Search and analytics
 
-**Backend** (Node.js + Express + TypeScript) - Optional
-- REST API for integrations
-- Caching layer for performance
-- Webhook system for notifications
-- Rate limiting and security
+**Backend** (Rust + Axum + SQLx) - High-Performance API Server
+- REST API for integrations with 3-10x performance improvement
+- Async webhook system with Tokio runtime
+- PostgreSQL database with SQLx for type-safe queries
+- Real-time analytics and reporting
+- Third-party SDKs (Rust + Python via PyO3)
+- Comprehensive caching and rate limiting
 
 ### Data Flow
 
@@ -279,6 +288,44 @@ Consumer → Scans QR code, sees entire journey
 - Enterprise features
 - Mainnet launch
 
+## 🚀 Project Startup
+
+If you're a new contributor looking to run the project locally, follow these steps to get started:
+
+### Prerequisites
+
+- **Rust 1.70+**: Required for both smart contracts and backend. `curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh`
+- **Soroban CLI**: `cargo install --locked soroban-cli --features opt`
+- **WASM Target**: `rustup target add wasm32-unknown-unknown`
+- **Node.js 18+ & npm/yarn**: For the frontend.
+- **PostgreSQL 14+ & Redis 6+**: For the backend database and caching.
+
+### Quick Start Guide
+
+```bash
+# 1. Clone the repository
+git clone https://github.com/ChainLojistics/ChainLogistics.git
+cd ChainLogistics
+
+# 2. Build Smart Contracts
+cd contracts
+cargo build --target wasm32-unknown-unknown --release
+cargo test
+
+# 3. Start Frontend
+cd ../frontend
+npm install
+npm run dev  # Runs on http://localhost:3000
+
+# 4. Start Backend Server
+cd ../backend
+cp .env.example .env
+cargo build
+cargo run  # Runs on http://localhost:3001
+```
+
+For more comprehensive guidelines on contributing to this project, including detailed workflows and issue labels, see our [CONTRIBUTING.md](CONTRIBUTING.md).
+
 ## 🤝 Contributing
 
 We welcome contributors of all skill levels! This project offers opportunities to:
@@ -288,7 +335,7 @@ We welcome contributors of all skill levels! This project offers opportunities t
 - Join a growing community
 
 **Ways to Contribute:**
-- Code (smart contracts, frontend, backend)
+- Code (smart contracts, frontend, backend - Rust/Axum)
 - Documentation
 - Design (UI/UX)
 - Testing
@@ -424,10 +471,10 @@ This project is excellent for learning:
 - Real-time updates
 
 **Full-Stack Development**
-- REST API design
-- Database optimization
-- Caching strategies
-- Security best practices
+- Rust REST API design with Axum
+- PostgreSQL optimization with SQLx
+- Redis caching strategies
+- Async security best practices
 
 **System Design**
 - Distributed systems
@@ -451,7 +498,7 @@ This project is excellent for learning:
 
 ## 🔗 Links & Resources
 
-- **GitHub**: [github.com/ChainLojistics/ChainLojistics](https://github.com)
+- **GitHub**: [github.com/ChainLojistics/ChainLogistics](https://github.com)
 - **Website**: [chainlojistic.com](https://chainlojistic.com) (coming soon)
 - **Demo**: [demo.chainlojistic.com](https://demo.chainlojistic.com) (coming soon)
 - **Docs**: [docs.chainlojistic.com](https://docs.chainlojistic.com) (coming soon)
@@ -495,4 +542,4 @@ If you find ChainLojistic valuable, please give us a star on GitHub! It helps ot
 ---
 
 *Built with ❤️ by the ChainLojistic community*
-*Powered by Stellar & Soroban*
\ No newline at end of file
+*Powered by Stellar & Soroban*
diff --git a/backend/.env.example b/backend/.env.example
new file mode 100644
index 00000000..2b81ea8b
--- /dev/null
+++ b/backend/.env.example
@@ -0,0 +1,35 @@
+# ChainLogistics Backend Configuration
+# Environment profile (development|production|test)
+CHAINLOGISTICS_ENV=development
+
+# Database
+DATABASE_URL=postgres://chainlogistics:password@localhost/chainlogistics
+
+# Server
+HOST=0.0.0.0
+PORT=3001
+
+# TLS/SSL Configuration
+TLS_ENABLED=false
+TLS_CERT_PATH=/path/to/cert.pem
+TLS_KEY_PATH=/path/to/key.pem
+
+# Security
+ENFORCE_HTTPS=true
+HSTS_MAX_AGE=31536000
+ALLOWED_ORIGINS=https://localhost:3000,https://app.chainlogistics.com,https://*.chainlogistics.com
+
+# Redis
+REDIS_URL=redis://localhost:6379
+
+# Required secrets
+ENCRYPTION_KEY=0123456789abcdef0123456789abcdef
+JWT_SECRET=replace_with_minimum_16_character_secret
+
+# Logging
+RUST_LOG=info
+LOG_FORMAT=json
+
+# Optional nested overrides (config as code)
+# CHAINLOGISTICS__SERVER__PORT=3001
+# CHAINLOGISTICS__SECURITY__ENFORCE_HTTPS=true
diff --git a/backend/API_DOCUMENTATION.md b/backend/API_DOCUMENTATION.md
new file mode 100644
index 00000000..23906ef5
--- /dev/null
+++ b/backend/API_DOCUMENTATION.md
@@ -0,0 +1,398 @@
+# ChainLogistics API Documentation
+
+## Overview
+
+The ChainLogistics API provides a comprehensive RESTful interface for managing supply chain products, tracking events on blockchain, carbon footprint management, compliance checking, and financial operations.
+
+**Base URL:** `https://api.chainlogistics.io`
+**API Version:** v1
+
+## Authentication
+
+The API supports two authentication methods:
+
+### 1. API Key Authentication
+
+API keys are used for programmatic access to the API. Include your API key in the `X-API-Key` header.
+
+**Request Headers:**
+```
+X-API-Key: your_api_key_here
+```
+
+**API Key Tiers:**
+- **Basic**: 60 requests per minute
+- **Standard**: 300 requests per minute
+- **Premium**: 1000 requests per minute
+- **Enterprise**: 5000 requests per minute
+
+**Endpoints using API Key:**
+- `/api/v1/products` (GET)
+- `/api/v1/products/{id}` (GET)
+- `/api/v1/events` (GET)
+- `/api/v1/events/{id}` (GET)
+- `/api/v1/stats` (GET)
+- `/api/v1/transactions` (GET)
+- `/api/v1/transactions/{id}` (GET)
+- `/api/v1/compliance/check` (POST)
+- `/api/v1/compliance/report/{product_id}` (GET)
+
+### 2. JWT Authentication
+
+JWT (JSON Web Token) authentication is used for admin and sensitive operations. Include your JWT token in the `Authorization` header.
+
+**Request Headers:**
+```
+Authorization: Bearer your_jwt_token_here
+```
+
+**Obtaining a JWT Token:**
+1. Register a user account via `/api/v1/admin/auth/register`
+2. Login via `/api/v1/admin/auth/login` to receive your JWT token
+3. Include the token in subsequent requests
+
+**Token Expiration:**
+- JWT tokens expire after 24 hours
+- Refresh your token by logging in again
+
+**Endpoints using JWT:**
+- `/api/v1/admin/products` (POST, PUT, DELETE)
+- `/api/v1/admin/events` (POST)
+- `/api/v1/admin/transactions` (POST)
+- `/api/v1/admin/invoices` (POST)
+- `/api/v1/admin/financing/request` (POST)
+- `/api/v1/admin/users` (POST, GET)
+- `/api/v1/admin/auth/login` (POST)
+- `/api/v1/admin/auth/register` (POST)
+- `/api/v1/carbon/*` (all endpoints)
+- `/api/v1/keys/*` (all endpoints)
+
+## Error Responses
+
+The API uses standard HTTP status codes and returns error responses in JSON format.
+
+## Audit Logging
+
+The backend records structured audit events for authenticated API traffic and login attempts. Audit entries include actor identifiers, API key identifiers when available, IP address, user agent, HTTP method/path/status, event classification, correlation ID, sanitized metadata, and tamper-evident HMAC hash-chain fields.
+
+**Configuration:**
+
+```
+AUDIT_LOGGING_ENABLED=true
+AUDIT_HMAC_KEY=change_me_in_production
+AUDIT_RETENTION_DAYS=365
+```
+
+**Correlation IDs:**
+
+Clients may send `X-Correlation-Id` or `X-Request-Id`. The API returns `X-Correlation-Id` on responses so requests can be matched with audit records and operational logs.
+
+**Audit Report:**
+
+`GET /api/v1/audit/report` returns paginated audit events for auditor/admin users. Supported query filters include `user_id`, `actor_api_key_id`, `event_category`, `event_type`, `resource_type`, `target_resource_id`, `success`, `correlation_id`, `start`, `end`, `limit`, and `offset`.
+
+### Error Response Format
+
+```json
+{
+  "error": "Error type",
+  "message": "Detailed error message",
+  "details": {
+    "field": "Additional error details"
+  }
+}
+```
+
+### HTTP Status Codes
+
+| Status Code | Description |
+|-------------|-------------|
+| 200 | Success |
+| 201 | Created |
+| 204 | No Content |
+| 400 | Bad Request - Invalid input data |
+| 401 | Unauthorized - Missing or invalid authentication |
+| 403 | Forbidden - Insufficient permissions |
+| 404 | Not Found - Resource not found |
+| 409 | Conflict - Resource already exists |
+| 422 | Unprocessable Entity - Validation error |
+| 429 | Too Many Requests - Rate limit exceeded |
+| 500 | Internal Server Error |
+| 503 | Service Unavailable - Service temporarily down |
+
+### Common Error Types
+
+#### 400 Bad Request
+```json
+{
+  "error": "Bad Request",
+  "message": "Invalid input data",
+  "details": {
+    "field": "email",
+    "reason": "Invalid email format"
+  }
+}
+```
+
+#### 401 Unauthorized
+```json
+{
+  "error": "Unauthorized",
+  "message": "Missing or invalid authentication credentials"
+}
+```
+
+#### 403 Forbidden
+```json
+{
+  "error": "Forbidden",
+  "message": "You do not have permission to access this resource"
+}
+```
+
+#### 404 Not Found
+```json
+{
+  "error": "Not Found",
+  "message": "Resource not found",
+  "details": {
+    "resource": "Product",
+    "id": "123"
+  }
+}
+```
+
+#### 429 Rate Limit Exceeded
+```json
+{
+  "error": "Rate Limit Exceeded",
+  "message": "Too many requests",
+  "details": {
+    "limit": 60,
+    "remaining": 0,
+    "reset_at": "2024-01-01T00:00:00Z"
+  }
+}
+```
+
+#### 500 Internal Server Error
+```json
+{
+  "error": "Internal Server Error",
+  "message": "An unexpected error occurred",
+  "details": {
+    "request_id": "req_123456789"
+  }
+}
+```
+
+## Rate Limiting
+
+All API endpoints are rate-limited based on your API key tier. Rate limits are applied per API key.
+
+**Rate Limit Headers:**
+```
+X-RateLimit-Limit: 60
+X-RateLimit-Remaining: 45
+X-RateLimit-Reset: 1640995200
+```
+
+## Pagination
+
+List endpoints support pagination using query parameters.
+
+**Query Parameters:**
+- `offset`: Number of items to skip (default: 0)
+- `limit`: Number of items to return (default: 20, max: 100)
+
+**Example:**
+```
+GET /api/v1/products?offset=0&limit=20
+```
+
+**Paginated Response Format:**
+```json
+{
+  "products": [...],
+  "total": 150,
+  "offset": 0,
+  "limit": 20
+}
+```
+
+## Swagger UI
+
+Interactive API documentation is available via Swagger UI at:
+```
+https://api.chainlogistics.io/swagger-ui
+```
+
+The OpenAPI specification is available at:
+```
+https://api.chainlogistics.io/api-docs/openapi.json
+```
+
+## API Endpoints
+
+### Products
+- `GET /api/v1/products` - List all products
+- `GET /api/v1/products/{id}` - Get a specific product
+- `POST /api/v1/admin/products` - Create a new product
+- `PUT /api/v1/admin/products/{id}` - Update a product
+- `DELETE /api/v1/admin/products/{id}` - Delete a product
+
+### Events
+- `GET /api/v1/events` - List tracking events
+- `GET /api/v1/events/{id}` - Get a specific event
+- `POST /api/v1/admin/events` - Create a tracking event
+
+### Authentication
+- `POST /api/v1/admin/auth/login` - User login
+- `POST /api/v1/admin/auth/register` - User registration
+
+### Carbon Management
+- `POST /api/v1/carbon/footprint/calculate` - Calculate carbon footprint
+- `POST /api/v1/carbon/footprint/preview` - Preview carbon footprint
+- `GET /api/v1/carbon/footprint/{product_id}` - List footprints for product
+- `POST /api/v1/carbon/credits/generate` - Generate carbon credit
+- `GET /api/v1/carbon/credits` - List carbon credits
+- `GET /api/v1/carbon/credits/{id}` - Get carbon credit
+- `POST /api/v1/carbon/credits/retire` - Retire carbon credit
+- `GET /api/v1/carbon/market` - Get market summary
+- `GET /api/v1/carbon/market/trades` - List marketplace trades
+- `POST /api/v1/carbon/market/list` - List credit for sale
+- `POST /api/v1/carbon/market/purchase` - Purchase carbon credit
+- `POST /api/v1/carbon/verify` - Request verification
+- `GET /api/v1/carbon/verify/{credit_id}` - List verifications
+- `POST /api/v1/carbon/reports` - Generate report
+- `GET /api/v1/carbon/reports` - List reports
+
+### Financial
+- `POST /api/v1/admin/transactions` - Create transaction
+- `GET /api/v1/transactions` - List transactions
+- `GET /api/v1/transactions/{id}` - Get transaction
+- `POST /api/v1/admin/invoices` - Create invoice
+- `POST /api/v1/admin/financing/request` - Request financing
+
+### Compliance
+- `POST /api/v1/compliance/check` - Check compliance
+- `GET /api/v1/compliance/report/{product_id}` - Get compliance report
+- `GET /api/v1/audit/report` - Generate audit report
+
+### API Keys
+- `POST /api/v1/keys` - Create API key
+- `GET /api/v1/keys` - List API keys
+- `POST /api/v1/keys/{id}/revoke` - Revoke API key
+- `POST /api/v1/keys/{id}/rotate` - Rotate API key
+
+### Statistics
+- `GET /api/v1/stats` - Get global statistics
+
+### Health
+- `GET /health` - Health check
+- `GET /health/db` - Database health check
+
+## Example Requests
+
+### Create a Product
+
+**Request:**
+```bash
+curl -X POST https://api.chainlogistics.io/api/v1/admin/products \
+  -H "Authorization: Bearer your_jwt_token" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "id": "prod_123",
+    "name": "Organic Coffee Beans",
+    "description": "Premium organic coffee beans from Colombia",
+    "origin_location": "Colombia",
+    "category": "Beverages",
+    "tags": ["organic", "fair-trade"],
+    "certifications": ["USDA Organic", "Fair Trade"],
+    "media_hashes": ["ipfs://QmXxx..."],
+    "custom_fields": {"roast_level": "medium"}
+  }'
+```
+
+**Response:**
+```json
+{
+  "id": "prod_123",
+  "name": "Organic Coffee Beans",
+  "description": "Premium organic coffee beans from Colombia",
+  "origin_location": "Colombia",
+  "category": "Beverages",
+  "tags": ["organic", "fair-trade"],
+  "certifications": ["USDA Organic", "Fair Trade"],
+  "media_hashes": ["ipfs://QmXxx..."],
+  "custom_fields": {"roast_level": "medium"},
+  "owner_address": "GDXXX...",
+  "is_active": true,
+  "created_at": "2024-01-01T00:00:00Z",
+  "updated_at": "2024-01-01T00:00:00Z",
+  "created_by": "user_123",
+  "updated_by": "user_123"
+}
+```
+
+### Login
+
+**Request:**
+```bash
+curl -X POST https://api.chainlogistics.io/api/v1/admin/auth/login \
+  -H "Content-Type: application/json" \
+  -d '{
+    "email": "user@example.com",
+    "password": "secure_password"
+  }'
+```
+
+**Response:**
+```json
+{
+  "token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9...",
+  "user": {
+    "id": "uuid-123",
+    "email": "user@example.com",
+    "role": "Administrator",
+    "is_active": true,
+    "created_at": "2024-01-01T00:00:00Z"
+  }
+}
+```
+
+### Calculate Carbon Footprint
+
+**Request:**
+```bash
+curl -X POST https://api.chainlogistics.io/api/v1/carbon/footprint/calculate \
+  -H "Authorization: Bearer your_jwt_token" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "product_id": "prod_123",
+    "transport_distance": 1000,
+    "transport_method": "truck",
+    "weight": 500
+  }'
+```
+
+**Response:**
+```json
+{
+  "id": "footprint_123",
+  "product_id": "prod_123",
+  "total_emissions": 250.5,
+  "unit": "kg CO2e",
+  "breakdown": {
+    "transport": 200.0,
+    "production": 50.5
+  },
+  "created_at": "2024-01-01T00:00:00Z"
+}
+```
+
+## Support
+
+For API support, contact:
+- Email: support@chainlogistics.io
+- Documentation: https://docs.chainlogistics.io
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+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+ "synstructure",
+]
+
+[[package]]
+name = "zeroize"
+version = "1.8.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b97154e67e32c85465826e8bcc1c59429aaaf107c1e4a9e53c8d8ccd5eff88d0"
+
+[[package]]
+name = "zerotrie"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a59c17a5562d507e4b54960e8569ebee33bee890c70aa3fe7b97e85a9fd7851"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c28719294829477f525be0186d13efa9a3c602f7ec202ca9e353d310fb9a002"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eadce39539ca5cb3985590102671f2567e659fca9666581ad3411d59207951f3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "zip"
+version = "0.6.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "760394e246e4c28189f19d488c058bf16f564016aefac5d32bb1f3b51d5e9261"
+dependencies = [
+ "byteorder",
+ "crc32fast",
+ "crossbeam-utils",
+ "flate2",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/backend/Cargo.toml b/backend/Cargo.toml
new file mode 100644
index 00000000..10e96dab
--- /dev/null
+++ b/backend/Cargo.toml
@@ -0,0 +1,47 @@
+[package]
+name = "chainlojistic-backend"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+tokio = { version = "1.0", features = ["full"] }
+axum = "0.7"
+tower = "0.4"
+tower-http = { version = "0.5", features = ["cors", "trace"] }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+sqlx = { version = "0.7", features = ["runtime-tokio-rustls", "postgres", "chrono", "uuid"] }
+redis = { version = "0.24", features = ["tokio-comp"] }
+jsonwebtoken = "9.0"
+bcrypt = "0.15"
+uuid = { version = "1.0", features = ["v4", "serde"] }
+chrono = { version = "0.4", features = ["serde"] }
+tracing = "0.1"
+tracing-subscriber = { version = "0.3", features = ["env-filter", "json"] }
+thiserror = "1.0"
+anyhow = "1.0"
+config = "0.14"
+async-trait = "0.1"
+sha2 = "0.10"
+hmac = "0.12"
+hex = "0.4"
+rand = { version = "0.8", features = ["std"] }
+regex = "1.10"
+lazy_static = "1.4"
+rust_decimal = "1.35"
+# Stellar/Soroban dependencies
+soroban-sdk = "21.0"
+# OpenAPI documentation
+utoipa = { version = "4.0", features = ["axum_extras"] }
+utoipa-swagger-ui = { version = "6.0", features = ["axum"] }
+
+[dev-dependencies]
+tower-test = "0.4"
+reqwest = { version = "0.11", features = ["json"] }
+testcontainers = "0.15"
+
+[dependencies.aes-gcm]
+version = "0.10"
+
+[dependencies.base64]
+version = "0.21"
diff --git a/backend/Dockerfile b/backend/Dockerfile
new file mode 100644
index 00000000..8f2108f9
--- /dev/null
+++ b/backend/Dockerfile
@@ -0,0 +1,66 @@
+# Build stage
+FROM rust:1.75 as builder
+
+WORKDIR /app
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    libpq-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy Cargo files
+COPY Cargo.toml Cargo.lock ./
+
+# Create empty src directory to cache dependencies
+RUN mkdir src && \
+    echo "fn main() {}" > src/main.rs && \
+    cargo build --release && \
+    rm -rf src
+
+# Copy source code
+COPY src ./src
+COPY migrations ./migrations
+
+# Build the application
+RUN touch src/main.rs && cargo build --release
+
+# Runtime stage
+FROM debian:bookworm-slim
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y \
+    ca-certificates \
+    libpq5 \
+    libssl3 \
+    curl \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create app user
+RUN useradd -r -s /bin/false chainlogistics
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/target/release/chainlojistic-backend /usr/local/bin/chainlojistic-backend
+
+# Copy migrations
+COPY --from=builder /app/migrations ./migrations
+
+# Create necessary directories
+RUN mkdir -p /backups && \
+    chown -R chainlogistics:chainlogistics /app
+
+# Switch to non-root user
+USER chainlogistics
+
+# Expose port
+EXPOSE 3001
+
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
+    CMD curl -f http://localhost:3001/health || exit 1
+
+# Run the application
+CMD ["chainlojistic-backend"]
diff --git a/backend/ERROR_HANDLING_README.md b/backend/ERROR_HANDLING_README.md
new file mode 100644
index 00000000..44fb749d
--- /dev/null
+++ b/backend/ERROR_HANDLING_README.md
@@ -0,0 +1,244 @@
+# Backend Error Handling Implementation
+
+## Summary
+
+This implementation addresses issue #241: Backend Security - Error Handling and Information Disclosure.
+
+## What Was Implemented
+
+### 1. Enhanced Error Types (`src/error.rs`)
+
+- **Standardized Error Codes**: Numeric error codes (1000-1799) organized by category for programmatic handling
+- **Comprehensive Error Variants**: Covers all failure scenarios including authentication, validation, database, external services, and internal errors
+- **Automatic Error Conversions**: Implements `From` traits for common library errors (sqlx, serde_json, bcrypt, jsonwebtoken, etc.)
+
+### 2. Sanitized Error Responses
+
+- **Consistent JSON Structure**: All errors return standardized format with status, code, message, and correlation_id
+- **Information Sanitization**: Removes sensitive data from error messages:
+  - File paths → `[path]`
+  - SQL fragments → `[sql]`
+  - Connection strings → `[connection]`
+  - API keys/tokens → `[token]`
+- **Environment-Aware Details**: Detailed error information only in debug builds, sanitized in production
+
+### 3. Error Handling Middleware (`src/middleware/error_handler.rs`)
+
+- **Global Error Handler**: Catches unhandled errors and ensures consistent responses
+- **Request Logger**: Logs all requests with correlation IDs for tracking
+- **Panic Handler**: Converts panics to proper error responses
+- **Correlation ID Tracking**: Every request gets a unique ID for end-to-end tracking
+
+### 4. Error Monitoring System (`src/monitoring.rs`)
+
+- **Real-time Metrics**: Tracks error counts, rates, and patterns
+- **Error Rate Calculation**: Monitors errors per minute
+- **Alert System**: Triggers alerts for error spikes and critical errors
+- **Historical Analysis**: Maintains recent error history for debugging
+- **Admin Endpoints**: Provides error statistics and recent error events
+
+### 5. Structured Logging
+
+- **Correlation IDs**: All logs include correlation IDs for request tracking
+- **Appropriate Log Levels**: 
+  - ERROR: Critical failures (database, configuration)
+  - WARN: Security events (auth failures, rate limits)
+  - INFO: Normal operations
+  - DEBUG: Detailed diagnostics
+- **Structured Fields**: Uses key-value pairs for queryable logs
+
+## Security Features
+
+### Information Disclosure Prevention
+
+✅ **Implemented:**
+- Database errors sanitized (no table names, queries, or schema details exposed)
+- Stack traces never included in production responses
+- Internal error details logged but not exposed to clients
+- File paths and system information removed from messages
+- Connection strings and credentials never logged or exposed
+- Generic error messages for internal failures
+
+### Error Response Examples
+
+**Production Response:**
+```json
+{
+  "status": 500,
+  "code": "DATABASE_ERROR",
+  "message": "A database error occurred. Please try again later.",
+  "correlation_id": "550e8400-e29b-41d4-a716-446655440000"
+}
+```
+
+**Development Response (debug build only):**
+```json
+{
+  "status": 500,
+  "code": "DATABASE_ERROR",
+  "message": "A database error occurred. Please try again later.",
+  "correlation_id": "550e8400-e29b-41d4-a716-446655440000",
+  "details": "Database constraint violation"
+}
+```
+
+## Monitoring and Alerting
+
+### Error Metrics
+
+- **Error Counts**: Total errors by error code
+- **Error Rate**: Errors per minute
+- **Recent Errors**: Last hour of error events with correlation IDs
+- **Top Errors**: Most frequent error types
+
+### Alert Triggers
+
+- High error rate (> 10 errors/minute)
+- Critical errors (database, configuration, internal)
+- Error rate spikes
+- Cooldown period: 5 minutes (configurable)
+
+### Admin Endpoints
+
+- `GET /api/admin/errors/stats` - Error statistics
+- `GET /api/admin/errors/recent` - Recent error events
+- `GET /api/health/errors` - Health check with error rate
+
+## Usage Examples
+
+### Returning Errors
+
+```rust
+// Validation error
+if id.is_empty() {
+    return Err(AppError::Validation("Product ID is required".to_string()));
+}
+
+// Database error (auto-converted)
+let product = sqlx::query_as::<_, Product>("SELECT * FROM products WHERE id = $1")
+    .bind(&id)
+    .fetch_one(pool)
+    .await?; // Converts to AppError::Database
+
+// Not found error
+if product.deleted_at.is_some() {
+    return Err(AppError::NotFound("Product not found".to_string()));
+}
+```
+
+### Recording Errors for Monitoring
+
+```rust
+match service.create_product(request).await {
+    Ok(product) => Ok(Json(product)),
+    Err(e) => {
+        state.error_monitor.record_error(
+            ErrorCode::DatabaseError,
+            correlation_id,
+            Some("/api/products".to_string()),
+        ).await;
+        Err(e)
+    }
+}
+```
+
+## Testing
+
+### Unit Tests
+
+- Error sanitization tests
+- Error response format tests
+- Monitoring metrics tests
+- Alert cooldown tests
+
+### Integration Tests
+
+- End-to-end error handling
+- Correlation ID tracking
+- Error response validation
+- Monitoring endpoint tests
+
+## Acceptance Criteria Met
+
+✅ **Error messages sanitized for production**
+- All database errors sanitized
+- File paths, SQL, and connection strings removed
+- Generic messages for internal errors
+
+✅ **Sensitive information not logged or exposed**
+- Passwords, tokens, and credentials never logged
+- Internal details only in debug builds
+- Structured logging with appropriate levels
+
+✅ **Proper HTTP status codes used**
+- 400: Bad Request / Validation errors
+- 401: Unauthorized
+- 403: Forbidden
+- 404: Not Found
+- 429: Rate Limit Exceeded
+- 500: Internal Server Error
+- 502: Bad Gateway (external services)
+- 503: Service Unavailable (high error rate)
+
+✅ **Error tracking and monitoring implemented**
+- Real-time error metrics
+- Error rate calculation
+- Alert system for spikes
+- Admin endpoints for monitoring
+- Correlation ID tracking
+
+## Files Modified/Created
+
+### Modified
+- `backend/src/error.rs` - Enhanced error types and sanitization
+- `backend/src/middleware.rs` - Added error_handler module
+- `backend/src/main.rs` - Integrated error monitoring and middleware
+
+### Created
+- `backend/src/middleware/error_handler.rs` - Error handling middleware
+- `backend/src/monitoring.rs` - Error monitoring and alerting
+- `backend/src/handlers/monitoring.rs` - Monitoring endpoints
+- `docs/ERROR_HANDLING_IMPLEMENTATION.md` - Comprehensive documentation
+- `backend/ERROR_HANDLING_README.md` - This file
+
+## Configuration
+
+### Environment Variables
+
+```bash
+# Log level
+RUST_LOG=info  # or debug, trace for more detail
+
+# In production, ensure debug assertions are disabled
+cargo build --release
+```
+
+### Alert Configuration
+
+```rust
+AlertConfig {
+    error_rate_threshold: 10.0,  // errors per minute
+    critical_error_codes: vec![
+        ErrorCode::DatabaseError,
+        ErrorCode::InternalServerError,
+        ErrorCode::ConfigurationError,
+    ],
+    cooldown_seconds: 300,  // 5 minutes
+}
+```
+
+## Future Enhancements
+
+- Integration with external monitoring services (Datadog, New Relic)
+- Email/Slack notifications for critical errors
+- Error trend analysis and predictions
+- Automated error categorization
+- Error recovery suggestions
+- Performance impact monitoring
+
+## Related Documentation
+
+- [Error Handling Standards](../docs/ERROR_HANDLING_STANDARDS.md)
+- [Error Handling Implementation](../docs/ERROR_HANDLING_IMPLEMENTATION.md)
+- [Logging Standards](../docs/LOGGING_STANDARDS.md)
+- [Security Implementation](../docs/SECURITY_IMPLEMENTATION.md)
diff --git a/backend/config/default.toml b/backend/config/default.toml
new file mode 100644
index 00000000..eb50f263
--- /dev/null
+++ b/backend/config/default.toml
@@ -0,0 +1,15 @@
+[server]
+host = "0.0.0.0"
+port = 3001
+tls_enabled = false
+
+[database]
+max_connections = 20
+min_connections = 5
+connect_timeout = 30
+idle_timeout = 600
+
+[security]
+enforce_https = true
+hsts_max_age = 31536000
+allowed_origins = ["https://localhost:3000"]
diff --git a/backend/config/development.toml b/backend/config/development.toml
new file mode 100644
index 00000000..3c238657
--- /dev/null
+++ b/backend/config/development.toml
@@ -0,0 +1,6 @@
+[server]
+port = 3001
+
+[security]
+enforce_https = false
+allowed_origins = ["http://localhost:3000", "http://127.0.0.1:3000"]
diff --git a/backend/config/production.toml b/backend/config/production.toml
new file mode 100644
index 00000000..c5ad724b
--- /dev/null
+++ b/backend/config/production.toml
@@ -0,0 +1,5 @@
+[security]
+enforce_https = true
+
+[server]
+tls_enabled = true
diff --git a/backend/migrations/20240101000000_create_initial_schema.sql b/backend/migrations/20240101000000_create_initial_schema.sql
new file mode 100644
index 00000000..740bc4a3
--- /dev/null
+++ b/backend/migrations/20240101000000_create_initial_schema.sql
@@ -0,0 +1,120 @@
+-- Create initial schema for ChainLogistics backend
+
+-- Enable UUID extension
+CREATE EXTENSION IF NOT EXISTS "uuid-ossp";
+
+-- Create enum types
+CREATE TYPE api_key_tier AS ENUM ('Basic', 'Standard', 'Premium', 'Enterprise');
+
+-- Users table
+CREATE TABLE users (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    email TEXT NOT NULL UNIQUE,
+    password_hash TEXT NOT NULL,
+    stellar_address TEXT UNIQUE,
+    api_key TEXT UNIQUE,
+    api_key_hash TEXT UNIQUE,
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    is_admin BOOLEAN NOT NULL DEFAULT false,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    last_login_at TIMESTAMP WITH TIME ZONE
+);
+
+-- API keys table
+CREATE TABLE api_keys (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    key_hash TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL,
+    tier api_key_tier NOT NULL DEFAULT 'Basic',
+    rate_limit_per_minute INTEGER NOT NULL DEFAULT 60,
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    expires_at TIMESTAMP WITH TIME ZONE,
+    last_used_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Products table
+CREATE TABLE products (
+    id TEXT PRIMARY KEY,
+    name TEXT NOT NULL,
+    description TEXT,
+    origin_location TEXT NOT NULL,
+    category TEXT NOT NULL,
+    tags TEXT[] DEFAULT '{}',
+    certifications TEXT[] DEFAULT '{}',
+    media_hashes TEXT[] DEFAULT '{}',
+    custom_fields JSONB DEFAULT '{}',
+    owner_address TEXT NOT NULL,
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    created_by TEXT NOT NULL,
+    updated_by TEXT NOT NULL
+);
+
+-- Tracking events table
+CREATE TABLE tracking_events (
+    id BIGSERIAL PRIMARY KEY,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    actor_address TEXT NOT NULL,
+    timestamp TIMESTAMP WITH TIME ZONE NOT NULL,
+    event_type TEXT NOT NULL,
+    location TEXT NOT NULL,
+    data_hash TEXT NOT NULL,
+    note TEXT,
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Webhooks table
+CREATE TABLE webhooks (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    url TEXT NOT NULL,
+    secret TEXT NOT NULL,
+    events TEXT[] DEFAULT '{}',
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes for performance
+CREATE INDEX idx_products_owner_address ON products(owner_address);
+CREATE INDEX idx_products_category ON products(category);
+CREATE INDEX idx_products_is_active ON products(is_active);
+CREATE INDEX idx_products_created_at ON products(created_at);
+CREATE INDEX idx_products_tags ON products USING GIN(tags);
+CREATE INDEX idx_products_custom_fields ON products USING GIN(custom_fields);
+
+CREATE INDEX idx_tracking_events_product_id ON tracking_events(product_id);
+CREATE INDEX idx_tracking_events_timestamp ON tracking_events(timestamp);
+CREATE INDEX idx_tracking_events_event_type ON tracking_events(event_type);
+CREATE INDEX idx_tracking_events_actor_address ON tracking_events(actor_address);
+CREATE INDEX idx_tracking_events_metadata ON tracking_events USING GIN(metadata);
+
+CREATE INDEX idx_api_keys_user_id ON api_keys(user_id);
+CREATE INDEX idx_api_keys_key_hash ON api_keys(key_hash);
+CREATE INDEX idx_api_keys_is_active ON api_keys(is_active);
+
+CREATE INDEX idx_webhooks_user_id ON webhooks(user_id);
+CREATE INDEX idx_webhooks_is_active ON webhooks(is_active);
+
+-- Create trigger to update updated_at timestamp
+CREATE OR REPLACE FUNCTION update_updated_at_column()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ language 'plpgsql';
+
+CREATE TRIGGER update_users_updated_at BEFORE UPDATE ON users
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_products_updated_at BEFORE UPDATE ON products
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_webhooks_updated_at BEFORE UPDATE ON webhooks
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/migrations/20240102000000_add_financial_tables.sql b/backend/migrations/20240102000000_add_financial_tables.sql
new file mode 100644
index 00000000..59fdfe30
--- /dev/null
+++ b/backend/migrations/20240102000000_add_financial_tables.sql
@@ -0,0 +1,113 @@
+-- Payment and financial transaction tables
+
+CREATE TABLE IF NOT EXISTS payment_methods (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    payment_type VARCHAR(50) NOT NULL, -- 'bank_transfer', 'card', 'crypto', 'wire'
+    provider VARCHAR(100) NOT NULL, -- 'stripe', 'wise', 'circle', etc.
+    provider_id VARCHAR(255) NOT NULL,
+    is_default BOOLEAN DEFAULT FALSE,
+    is_active BOOLEAN DEFAULT TRUE,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE(user_id, provider, provider_id)
+);
+
+CREATE TABLE IF NOT EXISTS transactions (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    transaction_type VARCHAR(50) NOT NULL, -- 'payment', 'refund', 'fee', 'financing'
+    amount DECIMAL(20, 8) NOT NULL,
+    currency VARCHAR(10) NOT NULL DEFAULT 'USD',
+    status VARCHAR(50) NOT NULL DEFAULT 'pending', -- 'pending', 'completed', 'failed', 'cancelled'
+    payment_method_id UUID REFERENCES payment_methods(id),
+    blockchain_network VARCHAR(50),
+    blockchain_tx_hash VARCHAR(255),
+    description TEXT,
+    metadata JSONB,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    completed_at TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS invoices (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    invoice_number VARCHAR(100) NOT NULL UNIQUE,
+    amount DECIMAL(20, 8) NOT NULL,
+    currency VARCHAR(10) NOT NULL DEFAULT 'USD',
+    status VARCHAR(50) NOT NULL DEFAULT 'draft', -- 'draft', 'sent', 'paid', 'overdue', 'cancelled'
+    due_date DATE NOT NULL,
+    description TEXT,
+    line_items JSONB,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    paid_at TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS financing_requests (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    invoice_id UUID REFERENCES invoices(id),
+    financing_type VARCHAR(50) NOT NULL, -- 'invoice_factoring', 'supply_chain_financing', 'working_capital'
+    amount_requested DECIMAL(20, 8) NOT NULL,
+    amount_approved DECIMAL(20, 8),
+    currency VARCHAR(10) NOT NULL DEFAULT 'USD',
+    status VARCHAR(50) NOT NULL DEFAULT 'pending', -- 'pending', 'approved', 'rejected', 'funded'
+    interest_rate DECIMAL(5, 2),
+    term_days INTEGER,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    approved_at TIMESTAMP,
+    funded_at TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS wallet_balances (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    blockchain_network VARCHAR(50) NOT NULL,
+    wallet_address VARCHAR(255) NOT NULL,
+    balance DECIMAL(20, 8) NOT NULL DEFAULT 0,
+    token_symbol VARCHAR(20) NOT NULL,
+    last_synced TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    UNIQUE(user_id, blockchain_network, wallet_address)
+);
+
+CREATE TABLE IF NOT EXISTS compliance_records (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    product_id UUID REFERENCES products(id) ON DELETE CASCADE,
+    compliance_type VARCHAR(100) NOT NULL, -- 'gdpr', 'fda_21_cfr_11', 'fsma', etc.
+    status VARCHAR(50) NOT NULL DEFAULT 'pending', -- 'pending', 'compliant', 'non_compliant', 'exempted'
+    validation_data JSONB,
+    audit_trail JSONB,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    verified_at TIMESTAMP
+);
+
+CREATE TABLE IF NOT EXISTS audit_logs (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    user_id UUID REFERENCES users(id) ON DELETE SET NULL,
+    action VARCHAR(255) NOT NULL,
+    resource_type VARCHAR(100),
+    resource_id UUID,
+    changes JSONB,
+    ip_address INET,
+    user_agent TEXT,
+    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
+);
+
+CREATE INDEX idx_transactions_user_id ON transactions(user_id);
+CREATE INDEX idx_transactions_status ON transactions(status);
+CREATE INDEX idx_transactions_blockchain_tx_hash ON transactions(blockchain_tx_hash);
+CREATE INDEX idx_invoices_user_id ON invoices(user_id);
+CREATE INDEX idx_invoices_status ON invoices(status);
+CREATE INDEX idx_financing_requests_user_id ON financing_requests(user_id);
+CREATE INDEX idx_financing_requests_status ON financing_requests(status);
+CREATE INDEX idx_wallet_balances_user_id ON wallet_balances(user_id);
+CREATE INDEX idx_compliance_records_user_id ON compliance_records(user_id);
+CREATE INDEX idx_compliance_records_type ON compliance_records(compliance_type);
+CREATE INDEX idx_audit_logs_user_id ON audit_logs(user_id);
+CREATE INDEX idx_audit_logs_resource ON audit_logs(resource_type, resource_id);
+CREATE INDEX idx_audit_logs_created_at ON audit_logs(created_at);
diff --git a/backend/migrations/20240103000000_add_carbon_tables.sql b/backend/migrations/20240103000000_add_carbon_tables.sql
new file mode 100644
index 00000000..a9327268
--- /dev/null
+++ b/backend/migrations/20240103000000_add_carbon_tables.sql
@@ -0,0 +1,130 @@
+-- Carbon credit and footprint tracking tables
+
+-- Carbon footprint records per product/event
+CREATE TABLE IF NOT EXISTS carbon_footprints (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    tracking_event_id BIGINT REFERENCES tracking_events(id) ON DELETE SET NULL,
+    calculation_method VARCHAR(100) NOT NULL DEFAULT 'ghg_protocol',
+    -- Emissions in kg CO2 equivalent
+    transport_emissions DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    manufacturing_emissions DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    packaging_emissions DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    storage_emissions DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    total_emissions DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    -- Reduction data
+    baseline_emissions DECIMAL(12, 4),
+    emissions_reduction DECIMAL(12, 4),
+    reduction_percentage DECIMAL(5, 2),
+    -- Metadata
+    distance_km DECIMAL(10, 2),
+    transport_mode VARCHAR(50),  -- 'road', 'rail', 'sea', 'air'
+    energy_source VARCHAR(50),   -- 'renewable', 'grid', 'diesel', 'natural_gas'
+    raw_data JSONB DEFAULT '{}',
+    calculated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Carbon credits (1 credit = 1 tonne CO2 equivalent reduced)
+CREATE TABLE IF NOT EXISTS carbon_credits (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    owner_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    product_id TEXT REFERENCES products(id) ON DELETE SET NULL,
+    serial_number VARCHAR(100) NOT NULL UNIQUE,
+    vintage_year INTEGER NOT NULL,
+    credit_type VARCHAR(50) NOT NULL DEFAULT 'verified_reduction',
+    -- 'verified_reduction', 'removal', 'avoidance'
+    standard VARCHAR(100) NOT NULL DEFAULT 'GHG_PROTOCOL',
+    -- 'GHG_PROTOCOL', 'VERRA_VCS', 'GOLD_STANDARD', 'CDM'
+    quantity DECIMAL(12, 4) NOT NULL,  -- tonnes CO2e
+    price_per_tonne DECIMAL(12, 2),    -- USD
+    status VARCHAR(50) NOT NULL DEFAULT 'pending',
+    -- 'pending', 'verified', 'listed', 'sold', 'retired', 'cancelled'
+    registry_id VARCHAR(255),          -- external registry reference
+    registry_url TEXT,
+    verification_body VARCHAR(255),
+    verified_at TIMESTAMP WITH TIME ZONE,
+    retired_at TIMESTAMP WITH TIME ZONE,
+    retirement_reason TEXT,
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Carbon credit trades / marketplace orders
+CREATE TABLE IF NOT EXISTS carbon_trades (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    credit_id UUID NOT NULL REFERENCES carbon_credits(id) ON DELETE CASCADE,
+    seller_id UUID NOT NULL REFERENCES users(id),
+    buyer_id UUID REFERENCES users(id),
+    quantity DECIMAL(12, 4) NOT NULL,
+    price_per_tonne DECIMAL(12, 2) NOT NULL,
+    total_amount DECIMAL(14, 2) NOT NULL,
+    currency VARCHAR(10) NOT NULL DEFAULT 'USD',
+    status VARCHAR(50) NOT NULL DEFAULT 'open',
+    -- 'open', 'matched', 'settled', 'cancelled', 'expired'
+    trade_type VARCHAR(50) NOT NULL DEFAULT 'spot',
+    -- 'spot', 'forward', 'offset_purchase'
+    settlement_date TIMESTAMP WITH TIME ZONE,
+    blockchain_tx_hash VARCHAR(255),
+    platform_fee DECIMAL(10, 2) DEFAULT 0,
+    notes TEXT,
+    expires_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Third-party verification requests
+CREATE TABLE IF NOT EXISTS carbon_verifications (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    credit_id UUID NOT NULL REFERENCES carbon_credits(id) ON DELETE CASCADE,
+    requested_by UUID NOT NULL REFERENCES users(id),
+    verifier_name VARCHAR(255) NOT NULL,
+    verifier_accreditation VARCHAR(100),
+    status VARCHAR(50) NOT NULL DEFAULT 'requested',
+    -- 'requested', 'in_review', 'approved', 'rejected', 'expired'
+    methodology VARCHAR(255),
+    scope TEXT,
+    findings JSONB DEFAULT '{}',
+    certificate_url TEXT,
+    submitted_at TIMESTAMP WITH TIME ZONE,
+    completed_at TIMESTAMP WITH TIME ZONE,
+    expires_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Carbon reporting snapshots
+CREATE TABLE IF NOT EXISTS carbon_reports (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    owner_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    report_type VARCHAR(50) NOT NULL DEFAULT 'annual',
+    -- 'annual', 'quarterly', 'monthly', 'custom'
+    period_start TIMESTAMP WITH TIME ZONE NOT NULL,
+    period_end TIMESTAMP WITH TIME ZONE NOT NULL,
+    total_emissions DECIMAL(14, 4) NOT NULL DEFAULT 0,
+    total_reductions DECIMAL(14, 4) NOT NULL DEFAULT 0,
+    net_emissions DECIMAL(14, 4) NOT NULL DEFAULT 0,
+    credits_generated DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    credits_retired DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    credits_sold DECIMAL(12, 4) NOT NULL DEFAULT 0,
+    revenue_from_credits DECIMAL(14, 2) NOT NULL DEFAULT 0,
+    summary JSONB DEFAULT '{}',
+    generated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX idx_carbon_footprints_product_id ON carbon_footprints(product_id);
+CREATE INDEX idx_carbon_footprints_calculated_at ON carbon_footprints(calculated_at);
+CREATE INDEX idx_carbon_credits_owner_id ON carbon_credits(owner_id);
+CREATE INDEX idx_carbon_credits_status ON carbon_credits(status);
+CREATE INDEX idx_carbon_credits_vintage_year ON carbon_credits(vintage_year);
+CREATE INDEX idx_carbon_credits_serial ON carbon_credits(serial_number);
+CREATE INDEX idx_carbon_trades_credit_id ON carbon_trades(credit_id);
+CREATE INDEX idx_carbon_trades_seller_id ON carbon_trades(seller_id);
+CREATE INDEX idx_carbon_trades_buyer_id ON carbon_trades(buyer_id);
+CREATE INDEX idx_carbon_trades_status ON carbon_trades(status);
+CREATE INDEX idx_carbon_verifications_credit_id ON carbon_verifications(credit_id);
+CREATE INDEX idx_carbon_reports_owner_id ON carbon_reports(owner_id);
+CREATE INDEX idx_carbon_reports_period ON carbon_reports(period_start, period_end);
diff --git a/backend/migrations/20240103000000_create_digital_twin_tables.sql b/backend/migrations/20240103000000_create_digital_twin_tables.sql
new file mode 100644
index 00000000..6601753c
--- /dev/null
+++ b/backend/migrations/20240103000000_create_digital_twin_tables.sql
@@ -0,0 +1,169 @@
+-- Digital Twin Tables Migration
+-- This migration creates tables for digital twin functionality including
+-- simulations, predictions, optimizations, and state tracking
+
+-- Digital Twins table
+CREATE TABLE IF NOT EXISTS digital_twins (
+    id UUID PRIMARY KEY,
+    product_id VARCHAR(255) NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    twin_type TEXT NOT NULL CHECK (twin_type IN ('Product', 'Warehouse', 'Vehicle', 'Container', 'Facility')),
+    name VARCHAR(500) NOT NULL,
+    description TEXT,
+    current_state JSONB NOT NULL DEFAULT '{}',
+    metadata JSONB NOT NULL DEFAULT '{}',
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    last_sync_at TIMESTAMP WITH TIME ZONE
+);
+
+-- Indexes for digital_twins
+CREATE INDEX idx_digital_twins_product ON digital_twins(product_id);
+CREATE INDEX idx_digital_twins_type ON digital_twins(twin_type);
+CREATE INDEX idx_digital_twins_active ON digital_twins(is_active) WHERE is_active = true;
+CREATE INDEX idx_digital_twins_created ON digital_twins(created_at DESC);
+
+-- Twin States table (historical state tracking)
+CREATE TABLE IF NOT EXISTS twin_states (
+    id UUID PRIMARY KEY,
+    twin_id UUID NOT NULL REFERENCES digital_twins(id) ON DELETE CASCADE,
+    state_data JSONB NOT NULL,
+    metrics JSONB NOT NULL DEFAULT '{}',
+    timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    source VARCHAR(255) NOT NULL
+);
+
+-- Indexes for twin_states
+CREATE INDEX idx_twin_states_twin ON twin_states(twin_id);
+CREATE INDEX idx_twin_states_timestamp ON twin_states(timestamp DESC);
+CREATE INDEX idx_twin_states_twin_time ON twin_states(twin_id, timestamp DESC);
+
+-- Simulations table
+CREATE TABLE IF NOT EXISTS simulations (
+    id UUID PRIMARY KEY,
+    twin_id UUID NOT NULL REFERENCES digital_twins(id) ON DELETE CASCADE,
+    name VARCHAR(500) NOT NULL,
+    description TEXT,
+    simulation_type TEXT NOT NULL CHECK (simulation_type IN (
+        'RouteOptimization',
+        'DemandForecasting',
+        'InventoryOptimization',
+        'RiskAssessment',
+        'CostAnalysis',
+        'TimelineProjection'
+    )),
+    parameters JSONB NOT NULL DEFAULT '{}',
+    status TEXT NOT NULL CHECK (status IN ('Pending', 'Running', 'Completed', 'Failed', 'Cancelled')),
+    results JSONB,
+    started_at TIMESTAMP WITH TIME ZONE,
+    completed_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    created_by VARCHAR(255) NOT NULL
+);
+
+-- Indexes for simulations
+CREATE INDEX idx_simulations_twin ON simulations(twin_id);
+CREATE INDEX idx_simulations_status ON simulations(status);
+CREATE INDEX idx_simulations_type ON simulations(simulation_type);
+CREATE INDEX idx_simulations_created ON simulations(created_at DESC);
+CREATE INDEX idx_simulations_twin_created ON simulations(twin_id, created_at DESC);
+
+-- Predictions table
+CREATE TABLE IF NOT EXISTS predictions (
+    id UUID PRIMARY KEY,
+    twin_id UUID NOT NULL REFERENCES digital_twins(id) ON DELETE CASCADE,
+    prediction_type TEXT NOT NULL CHECK (prediction_type IN (
+        'ArrivalTime',
+        'Delay',
+        'QualityIssue',
+        'DemandSpike',
+        'SupplyDisruption',
+        'CostOverrun'
+    )),
+    predicted_value JSONB NOT NULL,
+    confidence_score DOUBLE PRECISION NOT NULL CHECK (confidence_score >= 0 AND confidence_score <= 1),
+    prediction_horizon INTEGER NOT NULL, -- hours
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    valid_until TIMESTAMP WITH TIME ZONE NOT NULL,
+    actual_value JSONB,
+    accuracy_score DOUBLE PRECISION CHECK (accuracy_score >= 0 AND accuracy_score <= 1)
+);
+
+-- Indexes for predictions
+CREATE INDEX idx_predictions_twin ON predictions(twin_id);
+CREATE INDEX idx_predictions_type ON predictions(prediction_type);
+CREATE INDEX idx_predictions_created ON predictions(created_at DESC);
+CREATE INDEX idx_predictions_valid ON predictions(valid_until) WHERE actual_value IS NULL;
+CREATE INDEX idx_predictions_twin_created ON predictions(twin_id, created_at DESC);
+
+-- Optimizations table
+CREATE TABLE IF NOT EXISTS optimizations (
+    id UUID PRIMARY KEY,
+    twin_id UUID NOT NULL REFERENCES digital_twins(id) ON DELETE CASCADE,
+    optimization_type TEXT NOT NULL CHECK (optimization_type IN (
+        'Route',
+        'Inventory',
+        'Cost',
+        'Time',
+        'Carbon',
+        'Risk'
+    )),
+    current_metrics JSONB NOT NULL,
+    optimized_metrics JSONB NOT NULL,
+    recommendations TEXT[] NOT NULL DEFAULT '{}',
+    estimated_savings DOUBLE PRECISION,
+    implementation_complexity TEXT NOT NULL CHECK (implementation_complexity IN ('Low', 'Medium', 'High')),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    applied_at TIMESTAMP WITH TIME ZONE
+);
+
+-- Indexes for optimizations
+CREATE INDEX idx_optimizations_twin ON optimizations(twin_id);
+CREATE INDEX idx_optimizations_type ON optimizations(optimization_type);
+CREATE INDEX idx_optimizations_created ON optimizations(created_at DESC);
+CREATE INDEX idx_optimizations_applied ON optimizations(applied_at) WHERE applied_at IS NOT NULL;
+CREATE INDEX idx_optimizations_pending ON optimizations(twin_id) WHERE applied_at IS NULL;
+
+-- Comments for documentation
+COMMENT ON TABLE digital_twins IS 'Virtual replicas of physical supply chain entities for simulation and optimization';
+COMMENT ON TABLE twin_states IS 'Historical state snapshots of digital twins for time-series analysis';
+COMMENT ON TABLE simulations IS 'What-if scenarios for supply chain optimization and planning';
+COMMENT ON TABLE predictions IS 'AI/ML-based predictions for supply chain events and metrics';
+COMMENT ON TABLE optimizations IS 'Optimization recommendations and their implementation status';
+
+-- Function to update updated_at timestamp
+CREATE OR REPLACE FUNCTION update_digital_twin_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.updated_at = NOW();
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Trigger to automatically update updated_at
+CREATE TRIGGER trigger_update_digital_twin_updated_at
+    BEFORE UPDATE ON digital_twins
+    FOR EACH ROW
+    EXECUTE FUNCTION update_digital_twin_updated_at();
+
+-- Function to clean up old twin states (keep last 1000 per twin)
+CREATE OR REPLACE FUNCTION cleanup_old_twin_states()
+RETURNS void AS $$
+BEGIN
+    DELETE FROM twin_states
+    WHERE id IN (
+        SELECT id FROM (
+            SELECT id, ROW_NUMBER() OVER (PARTITION BY twin_id ORDER BY timestamp DESC) as rn
+            FROM twin_states
+        ) t
+        WHERE t.rn > 1000
+    );
+END;
+$$ LANGUAGE plpgsql;
+
+-- Grant permissions (adjust as needed for your setup)
+-- GRANT SELECT, INSERT, UPDATE, DELETE ON digital_twins TO chainlog_app;
+-- GRANT SELECT, INSERT, UPDATE, DELETE ON twin_states TO chainlog_app;
+-- GRANT SELECT, INSERT, UPDATE, DELETE ON simulations TO chainlog_app;
+-- GRANT SELECT, INSERT, UPDATE, DELETE ON predictions TO chainlog_app;
+-- GRANT SELECT, INSERT, UPDATE, DELETE ON optimizations TO chainlog_app;
diff --git a/backend/migrations/20240104000000_add_scalability_indexes.sql b/backend/migrations/20240104000000_add_scalability_indexes.sql
new file mode 100644
index 00000000..3d03d02f
--- /dev/null
+++ b/backend/migrations/20240104000000_add_scalability_indexes.sql
@@ -0,0 +1,27 @@
+-- Scalability improvements: composite indexes for high-frequency query patterns
+
+-- Events ordered by product + time (most common access pattern for product history)
+CREATE INDEX IF NOT EXISTS idx_tracking_events_product_timestamp
+    ON tracking_events(product_id, timestamp DESC);
+
+-- Events filtered by product + type (used by event_type filter queries)
+CREATE INDEX IF NOT EXISTS idx_tracking_events_product_type_timestamp
+    ON tracking_events(product_id, event_type, timestamp DESC);
+
+-- Active products sorted by creation time (paginated list queries)
+CREATE INDEX IF NOT EXISTS idx_products_active_created
+    ON products(is_active, created_at DESC);
+
+-- Active API keys only — the auth hot path only ever queries active keys
+CREATE INDEX IF NOT EXISTS idx_api_keys_active_hash
+    ON api_keys(key_hash)
+    WHERE is_active = true;
+
+-- Keys by user filtered to active — used by key-management list endpoint
+CREATE INDEX IF NOT EXISTS idx_api_keys_user_active
+    ON api_keys(user_id, is_active, created_at DESC);
+
+-- Full-text search index on products for name/description/category queries
+CREATE INDEX IF NOT EXISTS idx_products_fts
+    ON products
+    USING GIN(to_tsvector('english', name || ' ' || COALESCE(description, '') || ' ' || category));
diff --git a/backend/migrations/20240105000000_add_user_roles.sql b/backend/migrations/20240105000000_add_user_roles.sql
new file mode 100644
index 00000000..6b6cd19d
--- /dev/null
+++ b/backend/migrations/20240105000000_add_user_roles.sql
@@ -0,0 +1,3 @@
+-- Add role column to users table
+ALTER TABLE users ADD COLUMN role TEXT NOT NULL DEFAULT 'customer';
+ALTER TABLE users DROP COLUMN is_admin;
diff --git a/backend/migrations/20240106000000_add_collaboration.sql b/backend/migrations/20240106000000_add_collaboration.sql
new file mode 100644
index 00000000..3af8e703
--- /dev/null
+++ b/backend/migrations/20240106000000_add_collaboration.sql
@@ -0,0 +1,38 @@
+-- Multi-party collaboration feature tables
+
+-- Product shared visibility controls
+CREATE TABLE IF NOT EXISTS product_shares (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    shared_with_user_id UUID REFERENCES users(id) ON DELETE CASCADE,
+    permission_level VARCHAR(50) NOT NULL DEFAULT 'view', -- 'view', 'edit', 'manage'
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Collaboration workflows (e.g. approval requests)
+CREATE TABLE IF NOT EXISTS collaboration_requests (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    requester_id UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    status VARCHAR(50) NOT NULL DEFAULT 'pending', -- 'pending', 'approved', 'rejected'
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Audit trails for collaboration actions
+CREATE TABLE IF NOT EXISTS collaboration_audit_trails (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    actor_id UUID REFERENCES users(id) ON DELETE SET NULL,
+    action VARCHAR(100) NOT NULL,
+    entity_type VARCHAR(50) NOT NULL,
+    entity_id VARCHAR(255) NOT NULL,
+    details JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Indexes
+CREATE INDEX idx_product_shares_product ON product_shares(product_id);
+CREATE INDEX idx_product_shares_user ON product_shares(shared_with_user_id);
+CREATE INDEX idx_collaboration_requests_product ON collaboration_requests(product_id);
+CREATE INDEX idx_collaboration_requests_requester ON collaboration_requests(requester_id);
+CREATE INDEX idx_collaboration_audit_actor ON collaboration_audit_trails(actor_id);
diff --git a/backend/migrations/20240106000000_add_regulatory_compliance.sql b/backend/migrations/20240106000000_add_regulatory_compliance.sql
new file mode 100644
index 00000000..80fc6b5d
--- /dev/null
+++ b/backend/migrations/20240106000000_add_regulatory_compliance.sql
@@ -0,0 +1,99 @@
+-- Add regulatory compliance tracking tables
+
+-- Regulatory requirements table
+CREATE TABLE regulatory_requirements (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    requirement_id TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL,
+    description TEXT,
+    regulation_type TEXT NOT NULL, -- FDA, ISO, GDPR, etc.
+    category TEXT NOT NULL,
+    severity TEXT NOT NULL DEFAULT 'medium', -- low, medium, high, critical
+    required_fields JSONB DEFAULT '{}',
+    validation_logic TEXT,
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    effective_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    expiry_date TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Product compliance tracking table
+CREATE TABLE product_compliance (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    requirement_id TEXT NOT NULL REFERENCES regulatory_requirements(requirement_id),
+    status TEXT NOT NULL DEFAULT 'pending', -- pending, compliant, non_compliant, exempt, under_review
+    last_checked_at TIMESTAMP WITH TIME ZONE,
+    last_check_result JSONB,
+    violations JSONB DEFAULT '[]',
+    warnings JSONB DEFAULT '[]',
+    evidence_documents TEXT[] DEFAULT '{}',
+    notes TEXT,
+    checked_by TEXT,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    UNIQUE(product_id, requirement_id)
+);
+
+-- Compliance audit trail table
+CREATE TABLE compliance_audit_trail (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    requirement_id TEXT REFERENCES regulatory_requirements(requirement_id),
+    action_type TEXT NOT NULL, -- check, update, exemption, manual_override
+    previous_status TEXT,
+    new_status TEXT,
+    action_details JSONB,
+    performed_by TEXT NOT NULL,
+    performed_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    ip_address TEXT,
+    user_agent TEXT
+);
+
+-- Compliance reports table
+CREATE TABLE compliance_reports (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    report_id TEXT NOT NULL UNIQUE,
+    report_type TEXT NOT NULL, -- product_summary, regulatory_summary, non_compliance, custom
+    scope JSONB NOT NULL, -- filters for what's included in report
+    generated_by TEXT NOT NULL,
+    generated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    period_start TIMESTAMP WITH TIME ZONE,
+    period_end TIMESTAMP WITH TIME ZONE,
+    total_products_checked INTEGER DEFAULT 0,
+    compliant_count INTEGER DEFAULT 0,
+    non_compliant_count INTEGER DEFAULT 0,
+    pending_count INTEGER DEFAULT 0,
+    compliance_rate DECIMAL(5,2),
+    report_data JSONB NOT NULL,
+    file_path TEXT,
+    status TEXT NOT NULL DEFAULT 'completed', -- pending, completed, failed
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX idx_regulatory_requirements_type ON regulatory_requirements(regulation_type);
+CREATE INDEX idx_regulatory_requirements_category ON regulatory_requirements(category);
+CREATE INDEX idx_regulatory_requirements_is_active ON regulatory_requirements(is_active);
+
+CREATE INDEX idx_product_compliance_product_id ON product_compliance(product_id);
+CREATE INDEX idx_product_compliance_requirement_id ON product_compliance(requirement_id);
+CREATE INDEX idx_product_compliance_status ON product_compliance(status);
+CREATE INDEX idx_product_compliance_last_checked ON product_compliance(last_checked_at);
+
+CREATE INDEX idx_compliance_audit_trail_product_id ON compliance_audit_trail(product_id);
+CREATE INDEX idx_compliance_audit_trail_requirement_id ON compliance_audit_trail(requirement_id);
+CREATE INDEX idx_compliance_audit_trail_action_type ON compliance_audit_trail(action_type);
+CREATE INDEX idx_compliance_audit_trail_performed_at ON compliance_audit_trail(performed_at);
+
+CREATE INDEX idx_compliance_reports_report_type ON compliance_reports(report_type);
+CREATE INDEX idx_compliance_reports_generated_at ON compliance_reports(generated_at);
+CREATE INDEX idx_compliance_reports_status ON compliance_reports(status);
+
+-- Create trigger to update updated_at timestamp
+CREATE TRIGGER update_regulatory_requirements_updated_at BEFORE UPDATE ON regulatory_requirements
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_product_compliance_updated_at BEFORE UPDATE ON product_compliance
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/migrations/20240107000000_add_iot_sensors.sql b/backend/migrations/20240107000000_add_iot_sensors.sql
new file mode 100644
index 00000000..b8e1d14f
--- /dev/null
+++ b/backend/migrations/20240107000000_add_iot_sensors.sql
@@ -0,0 +1,126 @@
+-- Add IoT temperature sensor tables
+
+-- IoT devices table
+CREATE TABLE iot_devices (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    device_id TEXT NOT NULL UNIQUE,
+    device_type TEXT NOT NULL, -- temperature, humidity, gps, etc.
+    product_id TEXT REFERENCES products(id) ON DELETE SET NULL,
+    name TEXT NOT NULL,
+    description TEXT,
+    manufacturer TEXT,
+    model TEXT,
+    serial_number TEXT,
+    firmware_version TEXT,
+    location TEXT,
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    last_seen_at TIMESTAMP WITH TIME ZONE,
+    calibration_date TIMESTAMP WITH TIME ZONE,
+    next_calibration_date TIMESTAMP WITH TIME ZONE,
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Temperature readings table
+CREATE TABLE temperature_readings (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    device_id TEXT NOT NULL REFERENCES iot_devices(device_id) ON DELETE CASCADE,
+    product_id TEXT REFERENCES products(id) ON DELETE CASCADE,
+    temperature_celsius DECIMAL(10, 2) NOT NULL,
+    humidity_percent DECIMAL(5, 2),
+    unit TEXT NOT NULL DEFAULT 'celsius',
+    reading_timestamp TIMESTAMP WITH TIME ZONE NOT NULL,
+    received_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    location TEXT,
+    quality_score DECIMAL(3, 2), -- 0-1 score indicating data quality
+    is_anomaly BOOLEAN NOT NULL DEFAULT false,
+    anomaly_reason TEXT,
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Temperature thresholds table
+CREATE TABLE temperature_thresholds (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    device_id TEXT REFERENCES iot_devices(device_id) ON DELETE CASCADE,
+    threshold_type TEXT NOT NULL, -- min, max, critical_min, critical_max
+    min_temperature_celsius DECIMAL(10, 2),
+    max_temperature_celsius DECIMAL(10, 2),
+    duration_minutes INTEGER, -- How long threshold must be breached to trigger alert
+    alert_level TEXT NOT NULL DEFAULT 'warning', -- info, warning, critical
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    UNIQUE(product_id, device_id, threshold_type)
+);
+
+-- Temperature alerts table
+CREATE TABLE temperature_alerts (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    device_id TEXT NOT NULL REFERENCES iot_devices(device_id) ON DELETE CASCADE,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    threshold_id UUID REFERENCES temperature_thresholds(id) ON DELETE SET NULL,
+    alert_type TEXT NOT NULL, -- threshold_breach, anomaly, device_offline, calibration_due
+    alert_level TEXT NOT NULL, -- info, warning, critical
+    temperature_celsius DECIMAL(10, 2),
+    threshold_value DECIMAL(10, 2),
+    message TEXT NOT NULL,
+    is_resolved BOOLEAN NOT NULL DEFAULT false,
+    resolved_at TIMESTAMP WITH TIME ZONE,
+    resolved_by TEXT,
+    acknowledged_by TEXT,
+    acknowledged_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Historical temperature summary table (for reporting)
+CREATE TABLE temperature_summaries (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    device_id TEXT NOT NULL REFERENCES iot_devices(device_id) ON DELETE CASCADE,
+    product_id TEXT REFERENCES products(id) ON DELETE CASCADE,
+    summary_period TEXT NOT NULL, -- hourly, daily, weekly, monthly
+    period_start TIMESTAMP WITH TIME ZONE NOT NULL,
+    period_end TIMESTAMP WITH TIME ZONE NOT NULL,
+    avg_temperature_celsius DECIMAL(10, 2),
+    min_temperature_celsius DECIMAL(10, 2),
+    max_temperature_celsius DECIMAL(10, 2),
+    total_readings INTEGER,
+    anomaly_count INTEGER,
+    alert_count INTEGER,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    UNIQUE(device_id, summary_period, period_start, period_end)
+);
+
+-- Create indexes
+CREATE INDEX idx_iot_devices_device_id ON iot_devices(device_id);
+CREATE INDEX idx_iot_devices_product_id ON iot_devices(product_id);
+CREATE INDEX idx_iot_devices_device_type ON iot_devices(device_type);
+CREATE INDEX idx_iot_devices_is_active ON iot_devices(is_active);
+
+CREATE INDEX idx_temperature_readings_device_id ON temperature_readings(device_id);
+CREATE INDEX idx_temperature_readings_product_id ON temperature_readings(product_id);
+CREATE INDEX idx_temperature_readings_reading_timestamp ON temperature_readings(reading_timestamp);
+CREATE INDEX idx_temperature_readings_is_anomaly ON temperature_readings(is_anomaly);
+
+CREATE INDEX idx_temperature_thresholds_product_id ON temperature_thresholds(product_id);
+CREATE INDEX idx_temperature_thresholds_device_id ON temperature_thresholds(device_id);
+CREATE INDEX idx_temperature_thresholds_is_active ON temperature_thresholds(is_active);
+
+CREATE INDEX idx_temperature_alerts_device_id ON temperature_alerts(device_id);
+CREATE INDEX idx_temperature_alerts_product_id ON temperature_alerts(product_id);
+CREATE INDEX idx_temperature_alerts_is_resolved ON temperature_alerts(is_resolved);
+CREATE INDEX idx_temperature_alerts_created_at ON temperature_alerts(created_at);
+CREATE INDEX idx_temperature_alerts_alert_level ON temperature_alerts(alert_level);
+
+CREATE INDEX idx_temperature_summaries_device_id ON temperature_summaries(device_id);
+CREATE INDEX idx_temperature_summaries_product_id ON temperature_summaries(product_id);
+CREATE INDEX idx_temperature_summaries_period ON temperature_summaries(summary_period, period_start, period_end);
+
+-- Create trigger to update updated_at timestamp
+CREATE TRIGGER update_iot_devices_updated_at BEFORE UPDATE ON iot_devices
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_temperature_thresholds_updated_at BEFORE UPDATE ON temperature_thresholds
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/migrations/20240108000000_add_quality_control.sql b/backend/migrations/20240108000000_add_quality_control.sql
new file mode 100644
index 00000000..ef5749de
--- /dev/null
+++ b/backend/migrations/20240108000000_add_quality_control.sql
@@ -0,0 +1,131 @@
+-- Add quality control checkpoints and workflows tables
+
+-- QC checkpoints table
+CREATE TABLE qc_checkpoints (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    checkpoint_id TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL,
+    description TEXT,
+    checkpoint_type TEXT NOT NULL, -- inspection, testing, verification, validation
+    category TEXT NOT NULL, -- incoming, in_process, final, packaging
+    product_category TEXT, -- Optional: specific to product category
+    required_fields JSONB DEFAULT '{}',
+    acceptance_criteria JSONB DEFAULT '{}',
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- QC workflow definitions table
+CREATE TABLE qc_workflows (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    workflow_id TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL,
+    description TEXT,
+    product_category TEXT,
+    checkpoint_ids TEXT[] NOT NULL, -- Ordered list of checkpoint IDs
+    is_active BOOLEAN NOT NULL DEFAULT true,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- QC inspections table (individual checkpoint executions)
+CREATE TABLE qc_inspections (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    inspection_id TEXT NOT NULL UNIQUE,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    checkpoint_id TEXT NOT NULL REFERENCES qc_checkpoints(checkpoint_id) ON DELETE RESTRICT,
+    workflow_id TEXT REFERENCES qc_workflows(workflow_id) ON DELETE SET NULL,
+    status TEXT NOT NULL DEFAULT 'pending', -- pending, in_progress, passed, failed, skipped
+    inspector_id TEXT,
+    inspection_date TIMESTAMP WITH TIME ZONE,
+    location TEXT,
+    results JSONB DEFAULT '{}',
+    quality_metrics JSONB DEFAULT '{}',
+    notes TEXT,
+    evidence_documents TEXT[] DEFAULT '{}',
+    is_passed BOOLEAN,
+    failure_reason TEXT,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Non-conformance records table
+CREATE TABLE non_conformances (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    nc_id TEXT NOT NULL UNIQUE,
+    inspection_id UUID REFERENCES qc_inspections(id) ON DELETE SET NULL,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    severity TEXT NOT NULL, -- minor, major, critical
+    category TEXT NOT NULL, -- dimensional, visual, functional, documentation, safety
+    description TEXT NOT NULL,
+    root_cause TEXT,
+    correction_action TEXT,
+    correction_status TEXT NOT NULL DEFAULT 'open', -- open, in_progress, resolved, verified
+    responsible_party TEXT,
+    due_date TIMESTAMP WITH TIME ZONE,
+    resolved_at TIMESTAMP WITH TIME ZONE,
+    verified_by TEXT,
+    verified_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Quality metrics tracking table
+CREATE TABLE quality_metrics (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    metric_id TEXT NOT NULL UNIQUE,
+    product_id TEXT REFERENCES products(id) ON DELETE CASCADE,
+    metric_type TEXT NOT NULL, -- defect_rate, pass_rate, rework_rate, customer_returns
+    metric_value DECIMAL(10, 2) NOT NULL,
+    unit TEXT,
+    measurement_period_start TIMESTAMP WITH TIME ZONE NOT NULL,
+    measurement_period_end TIMESTAMP WITH TIME ZONE NOT NULL,
+    target_value DECIMAL(10, 2),
+    threshold_min DECIMAL(10, 2),
+    threshold_max DECIMAL(10, 2),
+    is_within_threshold BOOLEAN,
+    notes TEXT,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX idx_qc_checkpoints_checkpoint_id ON qc_checkpoints(checkpoint_id);
+CREATE INDEX idx_qc_checkpoints_type ON qc_checkpoints(checkpoint_type);
+CREATE INDEX idx_qc_checkpoints_category ON qc_checkpoints(category);
+CREATE INDEX idx_qc_checkpoints_is_active ON qc_checkpoints(is_active);
+
+CREATE INDEX idx_qc_workflows_workflow_id ON qc_workflows(workflow_id);
+CREATE INDEX idx_qc_workflows_product_category ON qc_workflows(product_category);
+CREATE INDEX idx_qc_workflows_is_active ON qc_workflows(is_active);
+
+CREATE INDEX idx_qc_inspections_inspection_id ON qc_inspections(inspection_id);
+CREATE INDEX idx_qc_inspections_product_id ON qc_inspections(product_id);
+CREATE INDEX idx_qc_inspections_checkpoint_id ON qc_inspections(checkpoint_id);
+CREATE INDEX idx_qc_inspections_workflow_id ON qc_inspections(workflow_id);
+CREATE INDEX idx_qc_inspections_status ON qc_inspections(status);
+CREATE INDEX idx_qc_inspections_inspection_date ON qc_inspections(inspection_date);
+
+CREATE INDEX idx_non_conformances_nc_id ON non_conformances(nc_id);
+CREATE INDEX idx_non_conformances_inspection_id ON non_conformances(inspection_id);
+CREATE INDEX idx_non_conformances_product_id ON non_conformances(product_id);
+CREATE INDEX idx_non_conformances_severity ON non_conformances(severity);
+CREATE INDEX idx_non_conformances_status ON non_conformances(correction_status);
+
+CREATE INDEX idx_quality_metrics_metric_id ON quality_metrics(metric_id);
+CREATE INDEX idx_quality_metrics_product_id ON quality_metrics(product_id);
+CREATE INDEX idx_quality_metrics_type ON quality_metrics(metric_type);
+CREATE INDEX idx_quality_metrics_period ON quality_metrics(measurement_period_start, measurement_period_end);
+
+-- Create trigger to update updated_at timestamp
+CREATE TRIGGER update_qc_checkpoints_updated_at BEFORE UPDATE ON qc_checkpoints
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_qc_workflows_updated_at BEFORE UPDATE ON qc_workflows
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_qc_inspections_updated_at BEFORE UPDATE ON qc_inspections
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_non_conformances_updated_at BEFORE UPDATE ON non_conformances
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/migrations/20240109000000_add_supplier_system.sql b/backend/migrations/20240109000000_add_supplier_system.sql
new file mode 100644
index 00000000..428bcefd
--- /dev/null
+++ b/backend/migrations/20240109000000_add_supplier_system.sql
@@ -0,0 +1,148 @@
+-- Add supplier verification and rating system tables
+
+-- Suppliers table
+CREATE TABLE suppliers (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    supplier_id TEXT NOT NULL UNIQUE,
+    name TEXT NOT NULL,
+    legal_name TEXT,
+    tax_id TEXT,
+    registration_number TEXT,
+    business_type TEXT, -- manufacturer, distributor, logistics, service_provider
+    tier TEXT NOT NULL DEFAULT 'standard', -- basic, standard, premium, strategic
+    contact_email TEXT NOT NULL,
+    contact_phone TEXT,
+    address TEXT,
+    city TEXT,
+    country TEXT NOT NULL,
+    postal_code TEXT,
+    website TEXT,
+    is_verified BOOLEAN NOT NULL DEFAULT false,
+    verification_status TEXT NOT NULL DEFAULT 'pending', -- pending, under_review, verified, rejected, suspended
+    verification_date TIMESTAMP WITH TIME ZONE,
+    verified_by TEXT,
+    certification_expiry TIMESTAMP WITH TIME ZONE,
+    risk_level TEXT NOT NULL DEFAULT 'medium', -- low, medium, high, critical
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Supplier ratings table
+CREATE TABLE supplier_ratings (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    supplier_id TEXT NOT NULL REFERENCES suppliers(supplier_id) ON DELETE CASCADE,
+    rater_id TEXT NOT NULL, -- User or system that provided the rating
+    rating_type TEXT NOT NULL, -- quality, delivery, communication, compliance, overall
+    score DECIMAL(3, 2) NOT NULL CHECK (score >= 0 AND score <= 5),
+    comment TEXT,
+    rating_period_start TIMESTAMP WITH TIME ZONE,
+    rating_period_end TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    UNIQUE(supplier_id, rater_id, rating_type, rating_period_start)
+);
+
+-- Supplier performance metrics table
+CREATE TABLE supplier_performance (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    supplier_id TEXT NOT NULL REFERENCES suppliers(supplier_id) ON DELETE CASCADE,
+    metric_type TEXT NOT NULL, -- on_time_delivery, quality_score, response_time, complaint_rate
+    metric_value DECIMAL(10, 2) NOT NULL,
+    unit TEXT,
+    measurement_period_start TIMESTAMP WITH TIME ZONE NOT NULL,
+    measurement_period_end TIMESTAMP WITH TIME ZONE NOT NULL,
+    target_value DECIMAL(10, 2),
+    benchmark_value DECIMAL(10, 2),
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    UNIQUE(supplier_id, metric_type, measurement_period_start, measurement_period_end)
+);
+
+-- Supplier compliance records table
+CREATE TABLE supplier_compliance (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    supplier_id TEXT NOT NULL REFERENCES suppliers(supplier_id) ON DELETE CASCADE,
+    compliance_type TEXT NOT NULL, -- iso9001, iso14001, fda, gmp, haccp, custom
+    certificate_number TEXT,
+    issuing_authority TEXT,
+    issue_date TIMESTAMP WITH TIME ZONE,
+    expiry_date TIMESTAMP WITH TIME ZONE,
+    status TEXT NOT NULL DEFAULT 'active', -- active, expired, suspended, revoked
+    document_url TEXT,
+    verification_notes TEXT,
+    verified_by TEXT,
+    verified_at TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Supplier products table (products supplied by each supplier)
+CREATE TABLE supplier_products (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    supplier_id TEXT NOT NULL REFERENCES suppliers(supplier_id) ON DELETE CASCADE,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    is_primary_supplier BOOLEAN NOT NULL DEFAULT false,
+    supply_capacity INTEGER,
+    lead_time_days INTEGER,
+    unit_price DECIMAL(10, 2),
+    currency TEXT DEFAULT 'USD',
+    min_order_quantity INTEGER,
+    contract_start_date TIMESTAMP WITH TIME ZONE,
+    contract_end_date TIMESTAMP WITH TIME ZONE,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    UNIQUE(supplier_id, product_id)
+);
+
+-- Supplier audit trail table
+CREATE TABLE supplier_audit_trail (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    supplier_id TEXT NOT NULL REFERENCES suppliers(supplier_id) ON DELETE CASCADE,
+    action_type TEXT NOT NULL, -- created, updated, verified, suspended, tier_changed, rating_updated
+    previous_value JSONB,
+    new_value JSONB,
+    performed_by TEXT NOT NULL,
+    performed_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    reason TEXT,
+    ip_address TEXT,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Create indexes
+CREATE INDEX idx_suppliers_supplier_id ON suppliers(supplier_id);
+CREATE INDEX idx_suppliers_business_type ON suppliers(business_type);
+CREATE INDEX idx_suppliers_tier ON suppliers(tier);
+CREATE INDEX idx_suppliers_verification_status ON suppliers(verification_status);
+CREATE INDEX idx_suppliers_is_verified ON suppliers(is_verified);
+CREATE INDEX idx_suppliers_country ON suppliers(country);
+CREATE INDEX idx_suppliers_risk_level ON suppliers(risk_level);
+
+CREATE INDEX idx_supplier_ratings_supplier_id ON supplier_ratings(supplier_id);
+CREATE INDEX idx_supplier_ratings_rating_type ON supplier_ratings(rating_type);
+CREATE INDEX idx_supplier_ratings_created_at ON supplier_ratings(created_at);
+
+CREATE INDEX idx_supplier_performance_supplier_id ON supplier_performance(supplier_id);
+CREATE INDEX idx_supplier_performance_metric_type ON supplier_performance(metric_type);
+CREATE INDEX idx_supplier_performance_period ON supplier_performance(measurement_period_start, measurement_period_end);
+
+CREATE INDEX idx_supplier_compliance_supplier_id ON supplier_compliance(supplier_id);
+CREATE INDEX idx_supplier_compliance_compliance_type ON supplier_compliance(compliance_type);
+CREATE INDEX idx_supplier_compliance_status ON supplier_compliance(status);
+CREATE INDEX idx_supplier_compliance_expiry_date ON supplier_compliance(expiry_date);
+
+CREATE INDEX idx_supplier_products_supplier_id ON supplier_products(supplier_id);
+CREATE INDEX idx_supplier_products_product_id ON supplier_products(product_id);
+CREATE INDEX idx_supplier_products_is_primary ON supplier_products(is_primary_supplier);
+
+CREATE INDEX idx_supplier_audit_trail_supplier_id ON supplier_audit_trail(supplier_id);
+CREATE INDEX idx_supplier_audit_trail_action_type ON supplier_audit_trail(action_type);
+CREATE INDEX idx_supplier_audit_trail_performed_at ON supplier_audit_trail(performed_at);
+
+-- Create trigger to update updated_at timestamp
+CREATE TRIGGER update_suppliers_updated_at BEFORE UPDATE ON suppliers
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_supplier_compliance_updated_at BEFORE UPDATE ON supplier_compliance
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_supplier_products_updated_at BEFORE UPDATE ON supplier_products
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/migrations/20260428000000_add_recall_management.sql b/backend/migrations/20260428000000_add_recall_management.sql
new file mode 100644
index 00000000..a82dec32
--- /dev/null
+++ b/backend/migrations/20260428000000_add_recall_management.sql
@@ -0,0 +1,65 @@
+-- Recall management and notification system
+
+CREATE TABLE IF NOT EXISTS recalls (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    batch_id TEXT,
+    title TEXT NOT NULL,
+    reason TEXT NOT NULL,
+    severity VARCHAR(20) NOT NULL DEFAULT 'medium',
+    status VARCHAR(30) NOT NULL DEFAULT 'open',
+    trigger_type VARCHAR(30) NOT NULL DEFAULT 'manual',
+    triggered_by TEXT,
+    triggered_event_id BIGINT REFERENCES tracking_events(id) ON DELETE SET NULL,
+    started_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    closed_at TIMESTAMP WITH TIME ZONE,
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS recall_affected_items (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    recall_id UUID NOT NULL REFERENCES recalls(id) ON DELETE CASCADE,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    batch_id TEXT,
+    stakeholder_role VARCHAR(30),
+    stakeholder_address TEXT,
+    detected_via VARCHAR(30) NOT NULL DEFAULT 'metadata',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS recall_notifications (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    recall_id UUID NOT NULL REFERENCES recalls(id) ON DELETE CASCADE,
+    recipient TEXT NOT NULL,
+    channel VARCHAR(30) NOT NULL DEFAULT 'in_app',
+    status VARCHAR(30) NOT NULL DEFAULT 'queued',
+    sent_at TIMESTAMP WITH TIME ZONE,
+    acknowledged_at TIMESTAMP WITH TIME ZONE,
+    payload JSONB DEFAULT '{}',
+    error TEXT,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE TABLE IF NOT EXISTS recall_effectiveness (
+    recall_id UUID PRIMARY KEY REFERENCES recalls(id) ON DELETE CASCADE,
+    affected_count INTEGER NOT NULL DEFAULT 0,
+    notified_count INTEGER NOT NULL DEFAULT 0,
+    acknowledged_count INTEGER NOT NULL DEFAULT 0,
+    recovered_count INTEGER NOT NULL DEFAULT 0,
+    disposed_count INTEGER NOT NULL DEFAULT 0,
+    last_updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_recalls_product_id ON recalls(product_id);
+CREATE INDEX IF NOT EXISTS idx_recalls_batch_id ON recalls(batch_id);
+CREATE INDEX IF NOT EXISTS idx_recalls_status ON recalls(status);
+CREATE INDEX IF NOT EXISTS idx_recall_affected_items_recall_id ON recall_affected_items(recall_id);
+CREATE INDEX IF NOT EXISTS idx_recall_affected_items_product_batch ON recall_affected_items(product_id, batch_id);
+CREATE INDEX IF NOT EXISTS idx_recall_notifications_recall_id ON recall_notifications(recall_id);
+CREATE INDEX IF NOT EXISTS idx_recall_notifications_recipient ON recall_notifications(recipient);
+
+-- Keep updated_at in sync
+CREATE TRIGGER update_recalls_updated_at BEFORE UPDATE ON recalls
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/migrations/20260428000000_enhance_audit_logs.sql b/backend/migrations/20260428000000_enhance_audit_logs.sql
new file mode 100644
index 00000000..631fd600
--- /dev/null
+++ b/backend/migrations/20260428000000_enhance_audit_logs.sql
@@ -0,0 +1,35 @@
+-- Add structured, tamper-evident audit logging fields without dropping existing logs.
+
+ALTER TABLE audit_logs
+    ADD COLUMN IF NOT EXISTS correlation_id TEXT,
+    ADD COLUMN IF NOT EXISTS event_category VARCHAR(32),
+    ADD COLUMN IF NOT EXISTS event_type VARCHAR(64),
+    ADD COLUMN IF NOT EXISTS severity VARCHAR(16),
+    ADD COLUMN IF NOT EXISTS actor_api_key_id UUID REFERENCES api_keys(id) ON DELETE SET NULL,
+    ADD COLUMN IF NOT EXISTS target_resource_id TEXT,
+    ADD COLUMN IF NOT EXISTS http_method VARCHAR(8),
+    ADD COLUMN IF NOT EXISTS http_path TEXT,
+    ADD COLUMN IF NOT EXISTS http_status SMALLINT,
+    ADD COLUMN IF NOT EXISTS success BOOLEAN,
+    ADD COLUMN IF NOT EXISTS error_code VARCHAR(64),
+    ADD COLUMN IF NOT EXISTS business_context TEXT,
+    ADD COLUMN IF NOT EXISTS prev_hash BYTEA,
+    ADD COLUMN IF NOT EXISTS row_hash BYTEA,
+    ADD COLUMN IF NOT EXISTS retention_days INTEGER NOT NULL DEFAULT 365;
+
+ALTER TABLE audit_logs
+    ALTER COLUMN created_at TYPE TIMESTAMPTZ
+    USING created_at AT TIME ZONE 'UTC';
+
+UPDATE audit_logs
+SET target_resource_id = COALESCE(target_resource_id, resource_id::TEXT)
+WHERE target_resource_id IS NULL;
+
+CREATE INDEX IF NOT EXISTS idx_audit_logs_correlation_id ON audit_logs(correlation_id);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_event_category ON audit_logs(event_category);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_event_type ON audit_logs(event_type);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_severity ON audit_logs(severity);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_actor_api_key_id ON audit_logs(actor_api_key_id);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_http_status ON audit_logs(http_status);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_success ON audit_logs(success);
+CREATE INDEX IF NOT EXISTS idx_audit_logs_target_resource_id ON audit_logs(target_resource_id);
diff --git a/backend/migrations/20260429000000_add_batch_lot_tracking.sql b/backend/migrations/20260429000000_add_batch_lot_tracking.sql
new file mode 100644
index 00000000..e456e9c3
--- /dev/null
+++ b/backend/migrations/20260429000000_add_batch_lot_tracking.sql
@@ -0,0 +1,121 @@
+-- Add batch and lot tracking functionality
+-- This migration adds comprehensive batch management with genealogy, quality attributes, and recall capabilities
+
+-- Batch status enum
+CREATE TYPE batch_status AS ENUM ('pending', 'in_production', 'completed', 'quality_check', 'quarantined', 'shipped', 'recalled', 'disposed');
+
+-- Batches table
+CREATE TABLE batches (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    batch_number TEXT NOT NULL UNIQUE,
+    product_id TEXT NOT NULL REFERENCES products(id) ON DELETE CASCADE,
+    lot_number TEXT,
+    production_date TIMESTAMP WITH TIME ZONE NOT NULL,
+    expiry_date TIMESTAMP WITH TIME ZONE,
+    quantity_produced INTEGER NOT NULL DEFAULT 0,
+    quantity_available INTEGER NOT NULL DEFAULT 0,
+    status batch_status NOT NULL DEFAULT 'pending',
+    production_location TEXT NOT NULL,
+    quality_grade TEXT,
+    quality_score NUMERIC(5,2),
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    created_by TEXT NOT NULL,
+    updated_by TEXT NOT NULL
+);
+
+-- Batch genealogy table for tracking parent-child relationships
+CREATE TABLE batch_genealogy (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    parent_batch_id UUID NOT NULL REFERENCES batches(id) ON DELETE CASCADE,
+    child_batch_id UUID NOT NULL REFERENCES batches(id) ON DELETE CASCADE,
+    relationship_type TEXT NOT NULL, -- 'split', 'merge', 'transform', 'rework'
+    quantity_transferred INTEGER NOT NULL DEFAULT 0,
+    transfer_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    notes TEXT,
+    metadata JSONB DEFAULT '{}',
+    UNIQUE(parent_batch_id, child_batch_id)
+);
+
+-- Batch quality attributes table
+CREATE TABLE batch_quality_attributes (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    batch_id UUID NOT NULL REFERENCES batches(id) ON DELETE CASCADE,
+    attribute_name TEXT NOT NULL,
+    attribute_value TEXT NOT NULL,
+    measurement_unit TEXT,
+    tolerance_min NUMERIC(10,2),
+    tolerance_max NUMERIC(10,2),
+    measured_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    measured_by TEXT NOT NULL,
+    is_within_tolerance BOOLEAN NOT NULL DEFAULT true,
+    notes TEXT,
+    UNIQUE(batch_id, attribute_name, measured_at)
+);
+
+-- Batch recall table
+CREATE TABLE batch_recalls (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    batch_id UUID NOT NULL REFERENCES batches(id) ON DELETE CASCADE,
+    recall_type TEXT NOT NULL, -- 'voluntary', 'mandatory', 'precautionary'
+    recall_reason TEXT NOT NULL,
+    recall_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    initiated_by TEXT NOT NULL,
+    severity TEXT NOT NULL, -- 'low', 'medium', 'high', 'critical'
+    status TEXT NOT NULL DEFAULT 'active', -- 'active', 'completed', 'cancelled'
+    affected_quantity INTEGER NOT NULL DEFAULT 0,
+    recovered_quantity INTEGER NOT NULL DEFAULT 0,
+    notification_sent BOOLEAN NOT NULL DEFAULT false,
+    public_announcement BOOLEAN NOT NULL DEFAULT false,
+    metadata JSONB DEFAULT '{}',
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+-- Batch inventory tracking
+CREATE TABLE batch_inventory (
+    id UUID PRIMARY KEY DEFAULT uuid_generate_v4(),
+    batch_id UUID NOT NULL REFERENCES batches(id) ON DELETE CASCADE,
+    location_id TEXT NOT NULL,
+    quantity INTEGER NOT NULL DEFAULT 0,
+    transaction_type TEXT NOT NULL, -- 'in', 'out', 'adjustment', 'transfer'
+    reference_id TEXT,
+    transaction_date TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW(),
+    performed_by TEXT NOT NULL,
+    notes TEXT
+);
+
+-- Create indexes for performance
+CREATE INDEX idx_batches_product_id ON batches(product_id);
+CREATE INDEX idx_batches_batch_number ON batches(batch_number);
+CREATE INDEX idx_batches_lot_number ON batches(lot_number);
+CREATE INDEX idx_batches_status ON batches(status);
+CREATE INDEX idx_batches_production_date ON batches(production_date);
+CREATE INDEX idx_batches_expiry_date ON batches(expiry_date);
+CREATE INDEX idx_batches_quality_grade ON batches(quality_grade);
+CREATE INDEX idx_batches_metadata ON batches USING GIN(metadata);
+
+CREATE INDEX idx_batch_genealogy_parent ON batch_genealogy(parent_batch_id);
+CREATE INDEX idx_batch_genealogy_child ON batch_genealogy(child_batch_id);
+CREATE INDEX idx_batch_genealogy_type ON batch_genealogy(relationship_type);
+
+CREATE INDEX idx_batch_quality_attributes_batch_id ON batch_quality_attributes(batch_id);
+CREATE INDEX idx_batch_quality_attributes_name ON batch_quality_attributes(attribute_name);
+CREATE INDEX idx_batch_quality_attributes_measured_at ON batch_quality_attributes(measured_at);
+
+CREATE INDEX idx_batch_recalls_batch_id ON batch_recalls(batch_id);
+CREATE INDEX idx_batch_recalls_status ON batch_recalls(status);
+CREATE INDEX idx_batch_recalls_severity ON batch_recalls(severity);
+CREATE INDEX idx_batch_recalls_date ON batch_recalls(recall_date);
+
+CREATE INDEX idx_batch_inventory_batch_id ON batch_inventory(batch_id);
+CREATE INDEX idx_batch_inventory_location ON batch_inventory(location_id);
+CREATE INDEX idx_batch_inventory_date ON batch_inventory(transaction_date);
+
+-- Create trigger to update updated_at timestamp for batches
+CREATE TRIGGER update_batches_updated_at BEFORE UPDATE ON batches
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
+
+CREATE TRIGGER update_batch_recalls_updated_at BEFORE UPDATE ON batch_recalls
+    FOR EACH ROW EXECUTE FUNCTION update_updated_at_column();
diff --git a/backend/src/blockchain/config.rs b/backend/src/blockchain/config.rs
new file mode 100644
index 00000000..a8ce908d
--- /dev/null
+++ b/backend/src/blockchain/config.rs
@@ -0,0 +1,120 @@
+use crate::blockchain::BlockchainNetwork;
+use std::collections::HashMap;
+
+#[derive(Debug, Clone)]
+pub struct BlockchainConfig {
+    pub network: BlockchainNetwork,
+    pub rpc_url: String,
+    pub chain_id: Option<u64>,
+    pub contract_address: String,
+    pub native_token: String,
+    pub explorer_url: String,
+    pub confirmation_blocks: u32,
+}
+
+pub struct BlockchainConfigManager {
+    configs: HashMap<BlockchainNetwork, BlockchainConfig>,
+}
+
+impl BlockchainConfigManager {
+    pub fn new() -> Self {
+        let mut configs = HashMap::new();
+
+        configs.insert(
+            BlockchainNetwork::Stellar,
+            BlockchainConfig {
+                network: BlockchainNetwork::Stellar,
+                rpc_url: std::env::var("STELLAR_RPC_URL")
+                    .unwrap_or_else(|_| "https://soroban-testnet.stellar.org".to_string()),
+                chain_id: None,
+                contract_address: std::env::var("STELLAR_CONTRACT_ID").unwrap_or_default(),
+                native_token: "XLM".to_string(),
+                explorer_url: "https://stellar.expert".to_string(),
+                confirmation_blocks: 1,
+            },
+        );
+
+        configs.insert(
+            BlockchainNetwork::Ethereum,
+            BlockchainConfig {
+                network: BlockchainNetwork::Ethereum,
+                rpc_url: std::env::var("ETH_RPC_URL")
+                    .unwrap_or_else(|_| "https://eth-mainnet.g.alchemy.com/v2/".to_string()),
+                chain_id: Some(1),
+                contract_address: std::env::var("ETH_CONTRACT_ID").unwrap_or_default(),
+                native_token: "ETH".to_string(),
+                explorer_url: "https://etherscan.io".to_string(),
+                confirmation_blocks: 12,
+            },
+        );
+
+        configs.insert(
+            BlockchainNetwork::Polygon,
+            BlockchainConfig {
+                network: BlockchainNetwork::Polygon,
+                rpc_url: std::env::var("POLYGON_RPC_URL")
+                    .unwrap_or_else(|_| "https://polygon-rpc.com".to_string()),
+                chain_id: Some(137),
+                contract_address: std::env::var("POLYGON_CONTRACT_ID").unwrap_or_default(),
+                native_token: "MATIC".to_string(),
+                explorer_url: "https://polygonscan.com".to_string(),
+                confirmation_blocks: 128,
+            },
+        );
+
+        configs.insert(
+            BlockchainNetwork::Hyperledger,
+            BlockchainConfig {
+                network: BlockchainNetwork::Hyperledger,
+                rpc_url: std::env::var("HYPERLEDGER_RPC_URL").unwrap_or_default(),
+                chain_id: None,
+                contract_address: std::env::var("HYPERLEDGER_CONTRACT_ID").unwrap_or_default(),
+                native_token: "HLF".to_string(),
+                explorer_url: String::new(),
+                confirmation_blocks: 1,
+            },
+        );
+
+        configs.insert(
+            BlockchainNetwork::Corda,
+            BlockchainConfig {
+                network: BlockchainNetwork::Corda,
+                rpc_url: std::env::var("CORDA_RPC_URL").unwrap_or_default(),
+                chain_id: None,
+                contract_address: std::env::var("CORDA_CONTRACT_ID").unwrap_or_default(),
+                native_token: "CORDA".to_string(),
+                explorer_url: String::new(),
+                confirmation_blocks: 1,
+            },
+        );
+
+        configs.insert(
+            BlockchainNetwork::Quorum,
+            BlockchainConfig {
+                network: BlockchainNetwork::Quorum,
+                rpc_url: std::env::var("QUORUM_RPC_URL").unwrap_or_default(),
+                chain_id: Some(1337),
+                contract_address: std::env::var("QUORUM_CONTRACT_ID").unwrap_or_default(),
+                native_token: "ETH".to_string(),
+                explorer_url: String::new(),
+                confirmation_blocks: 1,
+            },
+        );
+
+        BlockchainConfigManager { configs }
+    }
+
+    pub fn get_config(&self, network: BlockchainNetwork) -> Option<BlockchainConfig> {
+        self.configs.get(&network).cloned()
+    }
+
+    pub fn get_all_networks(&self) -> Vec<BlockchainNetwork> {
+        self.configs.keys().copied().collect()
+    }
+}
+
+impl Default for BlockchainConfigManager {
+    fn default() -> Self {
+        Self::new()
+    }
+}
diff --git a/backend/src/blockchain/mod.rs b/backend/src/blockchain/mod.rs
new file mode 100644
index 00000000..2761aece
--- /dev/null
+++ b/backend/src/blockchain/mod.rs
@@ -0,0 +1,7 @@
+pub mod config;
+pub mod types;
+pub mod provider;
+
+pub use config::BlockchainConfig;
+pub use types::{BlockchainNetwork, Transaction, SmartContractCall};
+pub use provider::BlockchainProvider;
diff --git a/backend/src/blockchain/provider.rs b/backend/src/blockchain/provider.rs
new file mode 100644
index 00000000..11a78146
--- /dev/null
+++ b/backend/src/blockchain/provider.rs
@@ -0,0 +1,97 @@
+use crate::blockchain::{BlockchainNetwork, Transaction, SmartContractCall};
+use async_trait::async_trait;
+
+#[async_trait]
+pub trait BlockchainProvider: Send + Sync {
+    async fn get_balance(&self, address: &str) -> Result<String, String>;
+    async fn send_transaction(&self, tx: &Transaction) -> Result<String, String>;
+    async fn get_transaction(&self, hash: &str) -> Result<Transaction, String>;
+    async fn call_contract(&self, call: &SmartContractCall) -> Result<String, String>;
+    async fn estimate_gas(&self, tx: &Transaction) -> Result<String, String>;
+    fn network(&self) -> BlockchainNetwork;
+}
+
+pub struct StellarProvider {
+    rpc_url: String,
+}
+
+impl StellarProvider {
+    pub fn new(rpc_url: String) -> Self {
+        StellarProvider { rpc_url }
+    }
+}
+
+#[async_trait]
+impl BlockchainProvider for StellarProvider {
+    async fn get_balance(&self, address: &str) -> Result<String, String> {
+        // Implementation for Stellar balance retrieval
+        Ok("0".to_string())
+    }
+
+    async fn send_transaction(&self, _tx: &Transaction) -> Result<String, String> {
+        // Implementation for Stellar transaction sending
+        Ok("tx_hash".to_string())
+    }
+
+    async fn get_transaction(&self, _hash: &str) -> Result<Transaction, String> {
+        // Implementation for Stellar transaction retrieval
+        Err("Not implemented".to_string())
+    }
+
+    async fn call_contract(&self, _call: &SmartContractCall) -> Result<String, String> {
+        // Implementation for Stellar contract calls
+        Ok("result".to_string())
+    }
+
+    async fn estimate_gas(&self, _tx: &Transaction) -> Result<String, String> {
+        // Stellar uses fixed fees
+        Ok("100".to_string())
+    }
+
+    fn network(&self) -> BlockchainNetwork {
+        BlockchainNetwork::Stellar
+    }
+}
+
+pub struct EVMProvider {
+    network: BlockchainNetwork,
+    rpc_url: String,
+}
+
+impl EVMProvider {
+    pub fn new(network: BlockchainNetwork, rpc_url: String) -> Self {
+        EVMProvider { network, rpc_url }
+    }
+}
+
+#[async_trait]
+impl BlockchainProvider for EVMProvider {
+    async fn get_balance(&self, _address: &str) -> Result<String, String> {
+        // Implementation for EVM balance retrieval
+        Ok("0".to_string())
+    }
+
+    async fn send_transaction(&self, _tx: &Transaction) -> Result<String, String> {
+        // Implementation for EVM transaction sending
+        Ok("tx_hash".to_string())
+    }
+
+    async fn get_transaction(&self, _hash: &str) -> Result<Transaction, String> {
+        // Implementation for EVM transaction retrieval
+        Err("Not implemented".to_string())
+    }
+
+    async fn call_contract(&self, _call: &SmartContractCall) -> Result<String, String> {
+        // Implementation for EVM contract calls
+        Ok("result".to_string())
+    }
+
+    async fn estimate_gas(&self, _tx: &Transaction) -> Result<String, String> {
+        // Implementation for EVM gas estimation
+        Ok("21000".to_string())
+    }
+
+    fn network(&self) -> BlockchainNetwork {
+        self.network
+    }
+}
diff --git a/backend/src/blockchain/types.rs b/backend/src/blockchain/types.rs
new file mode 100644
index 00000000..b3b3fd0c
--- /dev/null
+++ b/backend/src/blockchain/types.rs
@@ -0,0 +1,67 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum BlockchainNetwork {
+    Stellar,
+    Ethereum,
+    Polygon,
+    Hyperledger,
+    Corda,
+    Quorum,
+}
+
+impl BlockchainNetwork {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            BlockchainNetwork::Stellar => "stellar",
+            BlockchainNetwork::Ethereum => "ethereum",
+            BlockchainNetwork::Polygon => "polygon",
+            BlockchainNetwork::Hyperledger => "hyperledger",
+            BlockchainNetwork::Corda => "corda",
+            BlockchainNetwork::Quorum => "quorum",
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Transaction {
+    pub hash: String,
+    pub from: String,
+    pub to: String,
+    pub value: String,
+    pub data: Option<String>,
+    pub gas_price: Option<String>,
+    pub gas_limit: Option<String>,
+    pub nonce: Option<u64>,
+    pub status: TransactionStatus,
+    pub confirmations: u32,
+    pub timestamp: i64,
+}
+
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum TransactionStatus {
+    Pending,
+    Confirmed,
+    Failed,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SmartContractCall {
+    pub method: String,
+    pub params: Vec<String>,
+    pub contract_address: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct BlockchainEvent {
+    pub network: BlockchainNetwork,
+    pub contract_address: String,
+    pub event_name: String,
+    pub indexed_params: Vec<String>,
+    pub data: String,
+    pub block_number: u64,
+    pub transaction_hash: String,
+    pub log_index: u32,
+}
diff --git a/backend/src/compliance/audit.rs b/backend/src/compliance/audit.rs
new file mode 100644
index 00000000..b72cf2e2
--- /dev/null
+++ b/backend/src/compliance/audit.rs
@@ -0,0 +1,97 @@
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AuditLogEntry {
+    pub id: String,
+    pub user_id: Option<String>,
+    pub action: String,
+    pub resource_type: String,
+    pub resource_id: String,
+    pub changes: Value,
+    pub ip_address: Option<String>,
+    pub user_agent: Option<String>,
+    pub timestamp: i64,
+}
+
+pub struct AuditLogger;
+
+impl AuditLogger {
+    pub fn log_action(
+        user_id: Option<String>,
+        action: String,
+        resource_type: String,
+        resource_id: String,
+        changes: Value,
+        ip_address: Option<String>,
+        user_agent: Option<String>,
+    ) -> AuditLogEntry {
+        AuditLogEntry {
+            id: uuid::Uuid::new_v4().to_string(),
+            user_id,
+            action,
+            resource_type,
+            resource_id,
+            changes,
+            ip_address,
+            user_agent,
+            timestamp: chrono::Utc::now().timestamp(),
+        }
+    }
+
+    pub fn log_data_access(user_id: String, resource_id: String, ip_address: Option<String>) -> AuditLogEntry {
+        Self::log_action(
+            Some(user_id),
+            "data_access".to_string(),
+            "product".to_string(),
+            resource_id,
+            serde_json::json!({}),
+            ip_address,
+            None,
+        )
+    }
+
+    pub fn log_data_modification(
+        user_id: String,
+        resource_id: String,
+        changes: Value,
+    ) -> AuditLogEntry {
+        Self::log_action(
+            Some(user_id),
+            "data_modification".to_string(),
+            "product".to_string(),
+            resource_id,
+            changes,
+            None,
+            None,
+        )
+    }
+
+    pub fn log_data_deletion(user_id: String, resource_id: String) -> AuditLogEntry {
+        Self::log_action(
+            Some(user_id),
+            "data_deletion".to_string(),
+            "product".to_string(),
+            resource_id,
+            serde_json::json!({"deleted": true}),
+            None,
+            None,
+        )
+    }
+
+    pub fn log_compliance_check(
+        compliance_type: String,
+        resource_id: String,
+        result: Value,
+    ) -> AuditLogEntry {
+        Self::log_action(
+            None,
+            "compliance_check".to_string(),
+            "compliance".to_string(),
+            resource_id,
+            result,
+            None,
+            None,
+        )
+    }
+}
diff --git a/backend/src/compliance/mod.rs b/backend/src/compliance/mod.rs
new file mode 100644
index 00000000..1d483d44
--- /dev/null
+++ b/backend/src/compliance/mod.rs
@@ -0,0 +1,7 @@
+pub mod rules;
+pub mod validator;
+pub mod audit;
+
+pub use rules::{ComplianceRule, ComplianceType};
+pub use validator::ComplianceValidator;
+pub use audit::AuditLogger;
diff --git a/backend/src/compliance/rules.rs b/backend/src/compliance/rules.rs
new file mode 100644
index 00000000..bf162f4f
--- /dev/null
+++ b/backend/src/compliance/rules.rs
@@ -0,0 +1,109 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
+pub enum ComplianceType {
+    GDPR,
+    FDA21CFR11,
+    FSMA,
+    ConflictMinerals,
+    OrganicCertification,
+    SOC2,
+    ISO27001,
+}
+
+impl ComplianceType {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            ComplianceType::GDPR => "gdpr",
+            ComplianceType::FDA21CFR11 => "fda_21_cfr_11",
+            ComplianceType::FSMA => "fsma",
+            ComplianceType::ConflictMinerals => "conflict_minerals",
+            ComplianceType::OrganicCertification => "organic_certification",
+            ComplianceType::SOC2 => "soc2",
+            ComplianceType::ISO27001 => "iso27001",
+        }
+    }
+
+    pub fn retention_days(&self) -> u32 {
+        match self {
+            ComplianceType::GDPR => 2555, // 7 years
+            ComplianceType::FDA21CFR11 => 3650, // 10 years
+            ComplianceType::FSMA => 9125, // 25 years
+            ComplianceType::ConflictMinerals => 1825, // 5 years
+            ComplianceType::OrganicCertification => 1095, // 3 years
+            ComplianceType::SOC2 => 1095, // 3 years
+            ComplianceType::ISO27001 => 1095, // 3 years
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ComplianceRule {
+    pub rule_id: String,
+    pub compliance_type: ComplianceType,
+    pub description: String,
+    pub validation_logic: String,
+    pub required_fields: Vec<String>,
+    pub is_active: bool,
+}
+
+impl ComplianceRule {
+    pub fn gdpr_data_residency() -> Self {
+        ComplianceRule {
+            rule_id: "gdpr_residency".to_string(),
+            compliance_type: ComplianceType::GDPR,
+            description: "Ensure personal data is stored in EU data centers".to_string(),
+            validation_logic: "data_location == 'EU'".to_string(),
+            required_fields: vec!["data_location".to_string(), "consent".to_string()],
+            is_active: true,
+        }
+    }
+
+    pub fn fda_electronic_signature() -> Self {
+        ComplianceRule {
+            rule_id: "fda_esig".to_string(),
+            compliance_type: ComplianceType::FDA21CFR11,
+            description: "Require electronic signatures for pharmaceutical records".to_string(),
+            validation_logic: "has_digital_signature && signature_timestamp".to_string(),
+            required_fields: vec!["digital_signature".to_string(), "signer_id".to_string()],
+            is_active: true,
+        }
+    }
+
+    pub fn fsma_traceability() -> Self {
+        ComplianceRule {
+            rule_id: "fsma_trace".to_string(),
+            compliance_type: ComplianceType::FSMA,
+            description: "Maintain complete traceability for food products".to_string(),
+            validation_logic: "has_complete_chain_of_custody".to_string(),
+            required_fields: vec![
+                "origin".to_string(),
+                "processing_steps".to_string(),
+                "distribution".to_string(),
+            ],
+            is_active: true,
+        }
+    }
+
+    pub fn conflict_minerals_due_diligence() -> Self {
+        ComplianceRule {
+            rule_id: "conflict_minerals".to_string(),
+            compliance_type: ComplianceType::ConflictMinerals,
+            description: "Verify conflict-free mineral sourcing".to_string(),
+            validation_logic: "has_due_diligence_report && verified_by_auditor".to_string(),
+            required_fields: vec!["mineral_source".to_string(), "audit_report".to_string()],
+            is_active: true,
+        }
+    }
+
+    pub fn organic_certification() -> Self {
+        ComplianceRule {
+            rule_id: "organic_cert".to_string(),
+            compliance_type: ComplianceType::OrganicCertification,
+            description: "Verify organic certification status".to_string(),
+            validation_logic: "has_valid_organic_cert && cert_not_expired".to_string(),
+            required_fields: vec!["certification_body".to_string(), "cert_expiry".to_string()],
+            is_active: true,
+        }
+    }
+}
diff --git a/backend/src/compliance/validator.rs b/backend/src/compliance/validator.rs
new file mode 100644
index 00000000..3dbd7cf5
--- /dev/null
+++ b/backend/src/compliance/validator.rs
@@ -0,0 +1,151 @@
+use crate::compliance::{ComplianceRule, ComplianceType};
+use serde_json::{json, Value};
+
+pub struct ComplianceValidator;
+
+#[derive(Debug, Clone)]
+pub struct ValidationResult {
+    pub is_compliant: bool,
+    pub compliance_type: ComplianceType,
+    pub violations: Vec<String>,
+    pub warnings: Vec<String>,
+}
+
+impl ComplianceValidator {
+    pub fn validate(rule: &ComplianceRule, data: &Value) -> ValidationResult {
+        let mut violations = Vec::new();
+        let mut warnings = Vec::new();
+
+        // Check required fields
+        for field in &rule.required_fields {
+            if data.get(field).is_none() {
+                violations.push(format!("Missing required field: {}", field));
+            }
+        }
+
+        // Type-specific validations
+        match rule.compliance_type {
+            ComplianceType::GDPR => {
+                Self::validate_gdpr(data, &mut violations, &mut warnings);
+            }
+            ComplianceType::FDA21CFR11 => {
+                Self::validate_fda(data, &mut violations, &mut warnings);
+            }
+            ComplianceType::FSMA => {
+                Self::validate_fsma(data, &mut violations, &mut warnings);
+            }
+            ComplianceType::ConflictMinerals => {
+                Self::validate_conflict_minerals(data, &mut violations, &mut warnings);
+            }
+            ComplianceType::OrganicCertification => {
+                Self::validate_organic(data, &mut violations, &mut warnings);
+            }
+            _ => {}
+        }
+
+        ValidationResult {
+            is_compliant: violations.is_empty(),
+            compliance_type: rule.compliance_type,
+            violations,
+            warnings,
+        }
+    }
+
+    fn validate_gdpr(data: &Value, violations: &mut Vec<String>, warnings: &mut Vec<String>) {
+        if let Some(location) = data.get("data_location") {
+            if location.as_str() != Some("EU") {
+                violations.push("GDPR: Data must be stored in EU".to_string());
+            }
+        }
+
+        if data.get("consent").is_none() {
+            violations.push("GDPR: User consent required".to_string());
+        }
+
+        if data.get("right_to_be_forgotten_enabled").is_none() {
+            warnings.push("GDPR: Right to be forgotten not configured".to_string());
+        }
+    }
+
+    fn validate_fda(data: &Value, violations: &mut Vec<String>, _warnings: &mut Vec<String>) {
+        if data.get("digital_signature").is_none() {
+            violations.push("FDA 21 CFR Part 11: Digital signature required".to_string());
+        }
+
+        if data.get("signer_id").is_none() {
+            violations.push("FDA 21 CFR Part 11: Signer identification required".to_string());
+        }
+
+        if data.get("timestamp").is_none() {
+            violations.push("FDA 21 CFR Part 11: Timestamp required".to_string());
+        }
+    }
+
+    fn validate_fsma(data: &Value, violations: &mut Vec<String>, _warnings: &mut Vec<String>) {
+        if data.get("origin").is_none() {
+            violations.push("FSMA: Product origin required".to_string());
+        }
+
+        if data.get("processing_steps").is_none() {
+            violations.push("FSMA: Processing steps required".to_string());
+        }
+
+        if data.get("distribution").is_none() {
+            violations.push("FSMA: Distribution information required".to_string());
+        }
+    }
+
+    fn validate_conflict_minerals(data: &Value, violations: &mut Vec<String>, warnings: &mut Vec<String>) {
+        if data.get("mineral_source").is_none() {
+            violations.push("Conflict Minerals: Source information required".to_string());
+        }
+
+        if data.get("audit_report").is_none() {
+            violations.push("Conflict Minerals: Audit report required".to_string());
+        }
+
+        if data.get("verified_by_auditor").as_bool() != Some(true) {
+            warnings.push("Conflict Minerals: Awaiting auditor verification".to_string());
+        }
+    }
+
+    fn validate_organic(data: &Value, violations: &mut Vec<String>, warnings: &mut Vec<String>) {
+        if data.get("certification_body").is_none() {
+            violations.push("Organic: Certification body required".to_string());
+        }
+
+        if let Some(expiry) = data.get("cert_expiry") {
+            if let Some(expiry_str) = expiry.as_str() {
+                if let Ok(expiry_date) = chrono::DateTime::parse_from_rfc3339(expiry_str) {
+                    if expiry_date < chrono::Utc::now() {
+                        violations.push("Organic: Certification expired".to_string());
+                    } else if expiry_date.timestamp() - chrono::Utc::now().timestamp() < 7776000 {
+                        // 90 days
+                        warnings.push("Organic: Certification expiring soon".to_string());
+                    }
+                }
+            }
+        }
+    }
+
+    pub fn generate_compliance_report(validations: &[ValidationResult]) -> Value {
+        let total = validations.len();
+        let compliant = validations.iter().filter(|v| v.is_compliant).count();
+        let non_compliant = total - compliant;
+
+        json!({
+            "total_checks": total,
+            "compliant": compliant,
+            "non_compliant": non_compliant,
+            "compliance_rate": if total > 0 { (compliant as f64 / total as f64) * 100.0 } else { 0.0 },
+            "details": validations.iter().map(|v| {
+                json!({
+                    "type": v.compliance_type.as_str(),
+                    "is_compliant": v.is_compliant,
+                    "violations": v.violations,
+                    "warnings": v.warnings,
+                })
+            }).collect::<Vec<_>>()
+        })
+    }
+}
diff --git a/backend/src/config.rs b/backend/src/config.rs
new file mode 100644
index 00000000..17fab6b2
--- /dev/null
+++ b/backend/src/config.rs
@@ -0,0 +1,260 @@
+use serde::{Deserialize, Serialize};
+use std::env;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Config {
+    pub database: DatabaseConfig,
+    pub server: ServerConfig,
+    pub redis: RedisConfig,
+    pub security: SecurityConfig,
+    pub audit: AuditConfig,
+    pub encryption_key: String,
+    pub jwt_secret: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DatabaseConfig {
+    pub url: String,
+    pub read_replica_urls: Vec<String>,
+    pub max_connections: u32,
+    pub min_connections: u32,
+    pub connect_timeout: u64,
+    pub idle_timeout: u64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ServerConfig {
+    pub host: String,
+    pub port: u16,
+    pub tls_enabled: bool,
+    pub tls_cert_path: Option<String>,
+    pub tls_key_path: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct RedisConfig {
+    pub url: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SecurityConfig {
+    pub enforce_https: bool,
+    pub hsts_max_age: u64,
+    pub allowed_origins: Vec<String>,
+}
+
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum ConfigError {
+    #[error("Invalid PORT value: {0}")]
+    InvalidPort(String),
+    #[error("Missing required environment variable: {0}")]
+    MissingVar(String),
+    #[error("Configuration validation error: {0}")]
+    ValidationError(String),
+    #[error("Configuration error: {0}")]
+    Config(#[from] config::ConfigError),
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self {
+            database: DatabaseConfig {
+                url: env::var("DATABASE_URL").unwrap_or_else(|_| {
+                    "postgres://chainlogistics:password@localhost/chainlogistics".to_string()
+                }),
+                read_replica_urls: env::var("DATABASE_READ_REPLICA_URLS")
+                    .unwrap_or_else(|_| "".to_string())
+                    .split(',')
+                    .filter(|s| !s.is_empty())
+                    .map(|s| s.trim().to_string())
+                    .collect(),
+                max_connections: 20,
+                min_connections: 5,
+                connect_timeout: 30,
+                idle_timeout: 600,
+            },
+            server: ServerConfig {
+                host: env::var("HOST").unwrap_or_else(|_| "0.0.0.0".to_string()),
+                port: match env::var("PORT") {
+                    Ok(port_str) => port_str.parse().unwrap_or(3001),
+                    Err(_) => 3001,
+                },
+                tls_enabled: env::var("TLS_ENABLED")
+                    .unwrap_or_else(|_| "false".to_string())
+                    .parse()
+                    .unwrap_or(false),
+                tls_cert_path: env::var("TLS_CERT_PATH").ok(),
+                tls_key_path: env::var("TLS_KEY_PATH").ok(),
+            },
+            redis: RedisConfig {
+                url: env::var("REDIS_URL").unwrap_or_else(|_| "redis://localhost:6379".to_string()),
+            },
+            security: SecurityConfig {
+                enforce_https: env::var("ENFORCE_HTTPS")
+                    .unwrap_or_else(|_| "true".to_string())
+                    .parse()
+                    .unwrap_or(true),
+                hsts_max_age: env::var("HSTS_MAX_AGE")
+                    .unwrap_or_else(|_| "31536000".to_string())
+                    .parse()
+                    .unwrap_or(31536000), // 1 year
+                allowed_origins: env::var("ALLOWED_ORIGINS")
+                    .unwrap_or_else(|_| "https://localhost:3000".to_string())
+                    .split(',')
+                    .map(|s| s.trim().to_string())
+                    .collect(),
+            },
+            audit: AuditConfig {
+                enabled: env::var("AUDIT_LOGGING_ENABLED")
+                    .unwrap_or_else(|_| "true".to_string())
+                    .parse()
+                    .unwrap_or(true),
+                hmac_key: env::var("AUDIT_HMAC_KEY")
+                    .unwrap_or_else(|_| "default_audit_hmac_key_change_me_in_production".to_string()),
+                retention_days: env::var("AUDIT_RETENTION_DAYS")
+                    .unwrap_or_else(|_| "365".to_string())
+                    .parse()
+                    .unwrap_or(365),
+            },
+            encryption_key: env::var("ENCRYPTION_KEY")
+                .unwrap_or_else(|_| "0123456789abcdef0123456789abcdef".to_string()), // 32 chars for AES-256
+            jwt_secret: env::var("JWT_SECRET")
+                .unwrap_or_else(|_| "default_jwt_secret_change_me_in_production".to_string()),
+        }
+    }
+}
+
+impl Config {
+    /// Loads configuration from environment variables and configuration files.
+    /// Validates settings and logs configuration status.
+    /// 
+    /// # Errors
+    /// Returns `ConfigError` if required variables are missing or invalid.
+    pub fn from_env() -> Result<Self, ConfigError> {
+        let profile = env::var("CHAINLOGISTICS_ENV")
+            .or_else(|_| env::var("APP_ENV"))
+            .unwrap_or_else(|_| "development".to_string());
+
+        let cfg = config::Config::builder()
+            .add_source(config::Config::try_from(&Config::default())?)
+            .add_source(config::File::with_name("config/default").required(false))
+            .add_source(config::File::with_name(&format!("config/{}", profile)).required(false))
+            .add_source(
+                config::Environment::with_prefix("CHAINLOGISTICS")
+                    .separator("__")
+                    .try_parsing(true),
+            )
+            .build()?;
+
+        let mut config: Config = cfg.try_deserialize()?;
+
+        // Safe and strict validation of PORT variable
+        match env::var("PORT") {
+            Ok(port_str) => {
+                match port_str.parse::<u16>() {
+                    Ok(port) => {
+                        if port == 0 {
+                            tracing::error!("Invalid PORT: 0 is not allowed");
+                            return Err(ConfigError::ValidationError("PORT cannot be 0".to_string()));
+                        }
+                        tracing::info!("Using PORT from environment: {}", port);
+                        config.server.port = port;
+                    }
+                    Err(_) => {
+                        tracing::error!("Invalid PORT value in environment: '{}'", port_str);
+                        return Err(ConfigError::InvalidPort(port_str));
+                    }
+                }
+            }
+            Err(_) => {
+                tracing::info!("PORT not set in environment, using default: {}", config.server.port);
+            }
+        }
+
+        tracing::info!("Configuration loaded successfully for profile: {}", profile);
+        config.validate()?;
+        Ok(config)
+    }
+
+
+    fn validate(&self) -> Result<(), ConfigError> {
+        if self.database.url.trim().is_empty() {
+            return Err(ConfigError::ValidationError(
+                "database.url must not be empty".to_string(),
+            ));
+        }
+        if self.redis.url.trim().is_empty() {
+            return Err(ConfigError::ValidationError(
+                "redis.url must not be empty".to_string(),
+            ));
+        }
+        if self.jwt_secret.trim().len() < 16 {
+            return Err(ConfigError::ValidationError(
+                "jwt_secret must be at least 16 characters".to_string(),
+            ));
+        }
+        if self.encryption_key.trim().len() != 32 {
+            return Err(ConfigError::ValidationError(
+                "encryption_key must be exactly 32 characters (AES-256 key)".to_string(),
+            ));
+        }
+        if self.server.tls_enabled
+            && (self.server.tls_cert_path.is_none() || self.server.tls_key_path.is_none())
+        {
+            return Err(ConfigError::ValidationError(
+                "tls_cert_path and tls_key_path are required when tls_enabled=true".to_string(),
+            ));
+        }
+        if self.server.port == 0 {
+            return Err(ConfigError::ValidationError(
+                "server.port must be between 1 and 65535".to_string(),
+            ));
+        }
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::env;
+
+    #[test]
+    fn test_valid_port() {
+        env::set_var("PORT", "8080");
+        let config = Config::from_env();
+        assert!(config.is_ok());
+        assert_eq!(config.unwrap().server.port, 8080);
+        env::remove_var("PORT");
+    }
+
+    #[test]
+    fn test_invalid_port_non_numeric() {
+        env::set_var("PORT", "abc");
+        let config = Config::from_env();
+        assert!(config.is_err());
+        match config.unwrap_err() {
+            ConfigError::InvalidPort(val) => assert_eq!(val, "abc"),
+            _ => panic!("Expected InvalidPort error"),
+        }
+        env::remove_var("PORT");
+    }
+
+    #[test]
+    fn test_invalid_port_out_of_range() {
+        env::set_var("PORT", "70000");
+        let config = Config::from_env();
+        assert!(config.is_err());
+        env::remove_var("PORT");
+    }
+
+    #[test]
+    fn test_missing_port_variable() {
+        env::remove_var("PORT");
+        let config = Config::from_env();
+        assert!(config.is_ok());
+    }
+}
+
diff --git a/backend/src/database.rs b/backend/src/database.rs
new file mode 100644
index 00000000..ba05162f
--- /dev/null
+++ b/backend/src/database.rs
@@ -0,0 +1,120 @@
+use sqlx::{PgPool, Pool, Postgres};
+use std::time::Duration;
+use crate::config::DatabaseConfig;
+use crate::models::*;
+use serde::{Serialize, Deserialize};
+
+#[derive(Debug, Clone)]
+pub struct Database {
+    pool: PgPool,
+}
+
+impl Database {
+    pub async fn new(config: &DatabaseConfig) -> Result<Self, sqlx::Error> {
+        let pool = PgPool::connect_with(
+            sqlx::postgres::PgConnectOptions::from_str(&config.url)?
+                .acquire_timeout(Duration::from_secs(config.connect_timeout))
+                .idle_timeout(Duration::from_secs(config.idle_timeout))
+        ).await?;
+
+        // Configure pool size
+        pool.set_max_connections(config.max_connections);
+        pool.set_min_connections(config.min_connections);
+
+        Ok(Self { pool })
+    }
+
+    pub fn pool(&self) -> &PgPool {
+        &self.pool
+    }
+
+    pub async fn migrate(&self) -> Result<(), sqlx::migrate::MigrateError> {
+        sqlx::migrate!("./migrations").run(&self.pool).await
+    }
+
+    // Health check
+    pub async fn health_check(&self) -> Result<(), sqlx::Error> {
+        sqlx::query("SELECT 1")
+            .fetch_one(&self.pool)
+            .await?;
+        Ok(())
+    }
+}
+
+// Repository traits for data access
+#[async_trait::async_trait]
+pub trait ProductRepository {
+    async fn create_product(&self, product: NewProduct) -> Result<Product, sqlx::Error>;
+    async fn get_product(&self, id: &str) -> Result<Option<Product>, sqlx::Error>;
+    async fn update_product(&self, id: &str, product: Product) -> Result<Product, sqlx::Error>;
+    async fn delete_product(&self, id: &str) -> Result<(), sqlx::Error>;
+    async fn list_products(
+        &self,
+        offset: i64,
+        limit: i64,
+        filters: Option<ProductFilters>,
+    ) -> Result<Vec<Product>, sqlx::Error>;
+    async fn count_products(&self, filters: Option<ProductFilters>) -> Result<i64, sqlx::Error>;
+    async fn search_products(&self, query: &str, limit: i64) -> Result<Vec<Product>, sqlx::Error>;
+}
+
+#[async_trait::async_trait]
+pub trait EventRepository {
+    async fn create_event(&self, event: NewTrackingEvent) -> Result<TrackingEvent, sqlx::Error>;
+    async fn get_event(&self, id: i64) -> Result<Option<TrackingEvent>, sqlx::Error>;
+    async fn list_events_by_product(
+        &self,
+        product_id: &str,
+        offset: i64,
+        limit: i64,
+    ) -> Result<Vec<TrackingEvent>, sqlx::Error>;
+    async fn count_events_by_product(&self, product_id: &str) -> Result<i64, sqlx::Error>;
+    async fn list_events_by_type(
+        &self,
+        product_id: &str,
+        event_type: &str,
+        offset: i64,
+        limit: i64,
+    ) -> Result<Vec<TrackingEvent>, sqlx::Error>;
+    async fn get_product_stats(&self, product_id: &str) -> Result<Option<ProductStats>, sqlx::Error>;
+    async fn get_global_stats(&self) -> Result<GlobalStats, sqlx::Error>;
+}
+
+#[async_trait::async_trait]
+pub trait UserRepository {
+    async fn create_user(&self, user: NewUser) -> Result<User, sqlx::Error>;
+    async fn get_user(&self, id: Uuid) -> Result<Option<User>, sqlx::Error>;
+    async fn get_user_by_email(&self, email: &str) -> Result<Option<User>, sqlx::Error>;
+    async fn get_user_by_stellar_address(&self, address: &str) -> Result<Option<User>, sqlx::Error>;
+    async fn update_user(&self, id: Uuid, user: User) -> Result<User, sqlx::Error>;
+    async fn update_last_login(&self, id: Uuid) -> Result<(), sqlx::Error>;
+}
+
+#[async_trait::async_trait]
+pub trait ApiKeyRepository {
+    async fn create_api_key(&self, api_key: NewApiKey) -> Result<ApiKey, sqlx::Error>;
+    async fn get_api_key(&self, id: Uuid) -> Result<Option<ApiKey>, sqlx::Error>;
+    async fn get_api_key_by_hash(&self, key_hash: &str) -> Result<Option<ApiKey>, sqlx::Error>;
+    async fn list_api_keys(&self, user_id: Uuid) -> Result<Vec<ApiKey>, sqlx::Error>;
+    async fn update_api_key(&self, id: Uuid, api_key: ApiKey) -> Result<ApiKey, sqlx::Error>;
+    async fn update_last_used(&self, id: Uuid) -> Result<(), sqlx::Error>;
+    async fn revoke_api_key(&self, id: Uuid) -> Result<(), sqlx::Error>;
+}
+
+#[derive(Debug, Clone, Default)]
+pub struct ProductFilters {
+    pub owner_address: Option<String>,
+    pub category: Option<String>,
+    pub is_active: Option<bool>,
+    pub created_after: Option<chrono::DateTime<chrono::Utc>>,
+    pub created_before: Option<chrono::DateTime<chrono::Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GlobalStats {
+    pub total_products: i64,
+    pub active_products: i64,
+    pub total_events: i64,
+    pub total_users: i64,
+    pub active_api_keys: i64,
+}
\ No newline at end of file
diff --git a/backend/src/docs.rs b/backend/src/docs.rs
new file mode 100644
index 00000000..c96f22d1
--- /dev/null
+++ b/backend/src/docs.rs
@@ -0,0 +1,147 @@
+use utoipa::{OpenApi, ToSchema};
+use utoipa_swagger_ui::SwaggerUi;
+
+use crate::handlers::{
+    product::{ProductResponse, PaginatedProductsResponse, CreateProductRequest, UpdateProductRequest},
+    event::{EventResponse, PaginatedEventsResponse, CreateEventRequest, ListEventsQuery},
+    auth::{LoginRequest, RegisterRequest, AuthResponse},
+    api_keys::{CreateApiKeyRequest, ApiKeyCreatedResponse, ApiKeyResponse},
+    financial::{CreateTransactionRequest, CreateInvoiceRequest, FinancingRequestBody},
+    compliance::{ComplianceCheckRequest, ComplianceReportResponse},
+};
+
+#[derive(OpenApi)]
+#[openapi(
+    info(
+        title = "ChainLogistics API",
+        version = "1.0.0",
+        description = "API for managing supply chain products, tracking events on blockchain, carbon footprint management, compliance checking, and financial operations",
+        contact(
+            name = "ChainLogistics Team",
+            email = "support@chainlogistics.io"
+        ),
+        license(
+            name = "MIT",
+            url = "https://opensource.org/licenses/MIT"
+        )
+    ),
+    servers(
+        (url = "https://api.chainlogistics.io", description = "Production server"),
+        (url = "https://staging-api.chainlogistics.io", description = "Staging server"),
+        (url = "http://localhost:3001", description = "Development server")
+    ),
+    paths(
+        // Product endpoints
+        crate::handlers::product::list_products,
+        crate::handlers::product::create_product,
+        crate::handlers::product::get_product,
+        crate::handlers::product::update_product,
+        crate::handlers::product::delete_product,
+        // Event endpoints
+        crate::handlers::event::list_events,
+        crate::handlers::event::create_event,
+        crate::handlers::event::get_event,
+        // Authentication endpoints
+        crate::handlers::auth::login,
+        crate::handlers::auth::register,
+        // Stats endpoints
+        crate::handlers::stats::get_stats,
+        // Health endpoints
+        crate::handlers::health::health_check,
+        crate::handlers::health::db_health_check,
+        // Carbon endpoints
+        crate::handlers::carbon::calculate_footprint,
+        crate::handlers::carbon::preview_footprint,
+        crate::handlers::carbon::list_footprints,
+        crate::handlers::carbon::generate_credit,
+        crate::handlers::carbon::list_credits,
+        crate::handlers::carbon::get_credit,
+        crate::handlers::carbon::retire_credit,
+        crate::handlers::carbon::market_summary,
+        crate::handlers::carbon::list_trades,
+        crate::handlers::carbon::list_credit_for_sale,
+        crate::handlers::carbon::purchase_credit,
+        crate::handlers::carbon::request_verification,
+        crate::handlers::carbon::list_verifications,
+        crate::handlers::carbon::generate_report,
+        crate::handlers::carbon::list_reports,
+        // Financial endpoints
+        crate::handlers::financial::create_transaction,
+        crate::handlers::financial::get_transaction,
+        crate::handlers::financial::list_transactions,
+        crate::handlers::financial::create_invoice,
+        crate::handlers::financial::request_financing,
+        // Compliance endpoints
+        crate::handlers::compliance::check_compliance,
+        crate::handlers::compliance::get_compliance_report,
+        crate::handlers::compliance::generate_audit_report,
+        // API Key endpoints
+        crate::handlers::api_keys::create_key,
+        crate::handlers::api_keys::list_keys,
+        crate::handlers::api_keys::revoke_key,
+        crate::handlers::api_keys::rotate_key,
+    ),
+    components(
+        schemas(
+            // Product schemas
+            ProductResponse,
+            PaginatedProductsResponse,
+            CreateProductRequest,
+            UpdateProductRequest,
+            // Event schemas
+            EventResponse,
+            PaginatedEventsResponse,
+            CreateEventRequest,
+            ListEventsQuery,
+            // Auth schemas
+            LoginRequest,
+            RegisterRequest,
+            AuthResponse,
+            // API Key schemas
+            CreateApiKeyRequest,
+            ApiKeyCreatedResponse,
+            ApiKeyResponse,
+            // Financial schemas
+            CreateTransactionRequest,
+            CreateInvoiceRequest,
+            FinancingRequestBody,
+            // Compliance schemas
+            ComplianceCheckRequest,
+            ComplianceReportResponse,
+            // Model schemas
+            crate::models::ApiKeyTier,
+            crate::models::UserRole,
+            crate::models::User,
+            crate::models::Product,
+            crate::models::TrackingEvent,
+        )
+    ),
+    tags(
+        (name = "products", description = "Product management operations"),
+        (name = "events", description = "Tracking event operations"),
+        (name = "stats", description = "Statistics and analytics"),
+        (name = "health", description = "Health check endpoints"),
+        (name = "authentication", description = "User authentication and registration"),
+        (name = "carbon", description = "Carbon footprint management and trading"),
+        (name = "financial", description = "Financial transactions and invoicing"),
+        (name = "compliance", description = "Compliance checking and audit reports"),
+        (name = "api_keys", description = "API key management")
+    ),
+    security(
+        ("api_key" = []),
+        ("jwt" = [])
+    )
+)]
+pub struct ApiDoc;
+
+pub fn create_swagger_ui() -> SwaggerUi {
+    SwaggerUi::new("/swagger-ui")
+        .url("/api-docs/openapi.json", ApiDoc::openapi())
+}
+
+// API Key security scheme
+#[derive(utoipa::ToSchema)]
+pub struct ApiKeyAuth {
+    #[schema(description = "API key for authentication")]
+    api_key: String,
+}
diff --git a/backend/src/error.rs b/backend/src/error.rs
new file mode 100644
index 00000000..3a51ee61
--- /dev/null
+++ b/backend/src/error.rs
@@ -0,0 +1,599 @@
+use axum::{
+    http::StatusCode,
+    response::{IntoResponse, Response},
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use serde_json::json;
+use uuid::Uuid;
+
+/// Standardized error codes for programmatic handling
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
+#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+pub enum ErrorCode {
+    // Authentication & Authorization (1000-1099)
+    Unauthorized = 1000,
+    InvalidCredentials = 1001,
+    TokenExpired = 1002,
+    TokenInvalid = 1003,
+    InsufficientPermissions = 1004,
+    
+    // Validation Errors (1100-1199)
+    ValidationFailed = 1100,
+    InvalidInput = 1101,
+    MissingRequiredField = 1102,
+    InvalidFormat = 1103,
+    ValueOutOfRange = 1104,
+    
+    // Resource Errors (1200-1299)
+    ResourceNotFound = 1200,
+    ResourceAlreadyExists = 1201,
+    ResourceConflict = 1202,
+    ResourceDeleted = 1203,
+    
+    // Rate Limiting (1300-1399)
+    RateLimitExceeded = 1300,
+    QuotaExceeded = 1301,
+    
+    // Database Errors (1400-1499)
+    DatabaseError = 1400,
+    DatabaseConnectionFailed = 1401,
+    DatabaseQueryFailed = 1402,
+    DatabaseConstraintViolation = 1403,
+    
+    // External Service Errors (1500-1599)
+    ExternalServiceError = 1500,
+    BlockchainError = 1501,
+    PaymentServiceError = 1502,
+    
+    // Internal Errors (1600-1699)
+    InternalServerError = 1600,
+    ConfigurationError = 1601,
+    CryptographyError = 1602,
+    
+    // Business Logic Errors (1700-1799)
+    BusinessRuleViolation = 1700,
+    InvalidStateTransition = 1701,
+    OperationNotAllowed = 1702,
+}
+
+/// Application error types with detailed context
+#[derive(Debug, thiserror::Error)]
+pub enum AppError {
+    #[error("Database error")]
+    Database(#[source] sqlx::Error),
+    
+    #[error("Authentication failed")]
+    Unauthorized,
+    
+    #[error("Invalid credentials")]
+    InvalidCredentials,
+    
+    #[error("Token expired")]
+    TokenExpired,
+    
+    #[error("Token invalid")]
+    TokenInvalid,
+    
+    #[error("Insufficient permissions")]
+    Forbidden(String),
+    
+    #[error("Resource not found")]
+    NotFound(String),
+    
+    #[error("Resource already exists")]
+    AlreadyExists(String),
+    
+    #[error("Validation error")]
+    Validation(String),
+    
+    #[error("Rate limit exceeded")]
+    RateLimit,
+    
+    #[error("Quota exceeded")]
+    QuotaExceeded,
+    
+    #[error("Internal server error")]
+    Internal(String),
+    
+    #[error("Bad request")]
+    BadRequest(String),
+    
+    #[error("Configuration error")]
+    Configuration(String),
+    
+    #[error("Blockchain error")]
+    Blockchain(String),
+    
+    #[error("External service error")]
+    ExternalService(String),
+    
+    #[error("Business rule violation")]
+    BusinessRule(String),
+    
+    #[error("Cryptography error")]
+    Cryptography(String),
+}
+
+/// Standardized error response structure
+#[derive(Debug, Serialize, Deserialize)]
+pub struct ErrorResponse {
+    /// HTTP status code
+    pub status: u16,
+    
+    /// Standardized error code for programmatic handling
+    pub code: ErrorCode,
+    
+    /// User-friendly error message (sanitized)
+    pub message: String,
+    
+    /// Unique correlation ID for tracking and debugging
+    pub correlation_id: String,
+    
+    /// Optional additional details (only in development)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub details: Option<String>,
+}
+
+impl ErrorResponse {
+    /// Create a new error response with correlation ID
+    pub fn new(status: StatusCode, code: ErrorCode, message: String) -> Self {
+        Self {
+            status: status.as_u16(),
+            code,
+            message,
+            correlation_id: Uuid::new_v4().to_string(),
+            details: None,
+        }
+    }
+    
+    /// Add details (only included in development mode)
+    pub fn with_details(mut self, details: String) -> Self {
+        // Only include details in development mode
+        if cfg!(debug_assertions) {
+            self.details = Some(details);
+        }
+        self
+    }
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let correlation_id = Uuid::new_v4().to_string();
+        
+        let (status, code, message, log_details) = match self {
+            // Database Errors - Sanitize all database details
+            AppError::Database(ref err) => {
+                let details = sanitize_database_error(err);
+                tracing::error!(
+                    correlation_id = %correlation_id,
+                    error = ?err,
+                    "Database error occurred"
+                );
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    ErrorCode::DatabaseError,
+                    "A database error occurred. Please try again later.".to_string(),
+                    Some(details),
+                )
+            }
+            
+            // Authentication Errors
+            AppError::Unauthorized => {
+                tracing::warn!(
+                    correlation_id = %correlation_id,
+                    "Unauthorized access attempt"
+                );
+                (
+                    StatusCode::UNAUTHORIZED,
+                    ErrorCode::Unauthorized,
+                    "Authentication required. Please provide valid credentials.".to_string(),
+                    None,
+                )
+            }
+            
+            AppError::InvalidCredentials => {
+                tracing::warn!(
+                    correlation_id = %correlation_id,
+                    "Invalid credentials provided"
+                );
+                (
+                    StatusCode::UNAUTHORIZED,
+                    ErrorCode::InvalidCredentials,
+                    "Invalid username or password.".to_string(),
+                    None,
+                )
+            }
+            
+            AppError::TokenExpired => {
+                tracing::info!(
+                    correlation_id = %correlation_id,
+                    "Expired token used"
+                );
+                (
+                    StatusCode::UNAUTHORIZED,
+                    ErrorCode::TokenExpired,
+                    "Your session has expired. Please log in again.".to_string(),
+                    None,
+                )
+            }
+            
+            AppError::TokenInvalid => {
+                tracing::warn!(
+                    correlation_id = %correlation_id,
+                    "Invalid token provided"
+                );
+                (
+                    StatusCode::UNAUTHORIZED,
+                    ErrorCode::TokenInvalid,
+                    "Invalid authentication token.".to_string(),
+                    None,
+                )
+            }
+            
+            // Authorization Errors
+            AppError::Forbidden(ref msg) => {
+                tracing::warn!(
+                    correlation_id = %correlation_id,
+                    reason = %msg,
+                    "Forbidden access attempt"
+                );
+                (
+                    StatusCode::FORBIDDEN,
+                    ErrorCode::InsufficientPermissions,
+                    "You do not have permission to perform this action.".to_string(),
+                    Some(msg.clone()),
+                )
+            }
+            
+            // Resource Errors
+            AppError::NotFound(ref msg) => {
+                tracing::debug!(
+                    correlation_id = %correlation_id,
+                    resource = %msg,
+                    "Resource not found"
+                );
+                (
+                    StatusCode::NOT_FOUND,
+                    ErrorCode::ResourceNotFound,
+                    format!("Resource not found: {}", sanitize_message(msg)),
+                    None,
+                )
+            }
+            
+            AppError::AlreadyExists(ref msg) => {
+                tracing::debug!(
+                    correlation_id = %correlation_id,
+                    resource = %msg,
+                    "Resource already exists"
+                );
+                (
+                    StatusCode::CONFLICT,
+                    ErrorCode::ResourceAlreadyExists,
+                    format!("Resource already exists: {}", sanitize_message(msg)),
+                    None,
+                )
+            }
+            
+            // Validation Errors
+            AppError::Validation(ref msg) => {
+                tracing::debug!(
+                    correlation_id = %correlation_id,
+                    validation_error = %msg,
+                    "Validation failed"
+                );
+                (
+                    StatusCode::BAD_REQUEST,
+                    ErrorCode::ValidationFailed,
+                    format!("Validation failed: {}", sanitize_message(msg)),
+                    None,
+                )
+            }
+            
+            AppError::BadRequest(ref msg) => {
+                tracing::debug!(
+                    correlation_id = %correlation_id,
+                    error = %msg,
+                    "Bad request"
+                );
+                (
+                    StatusCode::BAD_REQUEST,
+                    ErrorCode::InvalidInput,
+                    format!("Invalid request: {}", sanitize_message(msg)),
+                    None,
+                )
+            }
+            
+            // Rate Limiting
+            AppError::RateLimit => {
+                tracing::warn!(
+                    correlation_id = %correlation_id,
+                    "Rate limit exceeded"
+                );
+                (
+                    StatusCode::TOO_MANY_REQUESTS,
+                    ErrorCode::RateLimitExceeded,
+                    "Too many requests. Please try again later.".to_string(),
+                    None,
+                )
+            }
+            
+            AppError::QuotaExceeded => {
+                tracing::warn!(
+                    correlation_id = %correlation_id,
+                    "Quota exceeded"
+                );
+                (
+                    StatusCode::TOO_MANY_REQUESTS,
+                    ErrorCode::QuotaExceeded,
+                    "API quota exceeded. Please upgrade your plan or try again later.".to_string(),
+                    None,
+                )
+            }
+            
+            // Internal Errors - Never expose internal details
+            AppError::Internal(ref msg) => {
+                tracing::error!(
+                    correlation_id = %correlation_id,
+                    error = %msg,
+                    "Internal server error"
+                );
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    ErrorCode::InternalServerError,
+                    "An internal error occurred. Please contact support if the problem persists.".to_string(),
+                    Some(msg.clone()),
+                )
+            }
+            
+            AppError::Configuration(ref msg) => {
+                tracing::error!(
+                    correlation_id = %correlation_id,
+                    error = %msg,
+                    "Configuration error"
+                );
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    ErrorCode::ConfigurationError,
+                    "A configuration error occurred. Please contact support.".to_string(),
+                    Some(msg.clone()),
+                )
+            }
+            
+            AppError::Cryptography(ref msg) => {
+                tracing::error!(
+                    correlation_id = %correlation_id,
+                    error = %msg,
+                    "Cryptography error"
+                );
+                (
+                    StatusCode::INTERNAL_SERVER_ERROR,
+                    ErrorCode::CryptographyError,
+                    "A security error occurred. Please try again.".to_string(),
+                    Some(msg.clone()),
+                )
+            }
+            
+            // External Service Errors
+            AppError::Blockchain(ref msg) => {
+                tracing::error!(
+                    correlation_id = %correlation_id,
+                    error = %msg,
+                    "Blockchain error"
+                );
+                (
+                    StatusCode::BAD_GATEWAY,
+                    ErrorCode::BlockchainError,
+                    "Blockchain service is temporarily unavailable. Please try again later.".to_string(),
+                    Some(msg.clone()),
+                )
+            }
+            
+            AppError::ExternalService(ref msg) => {
+                tracing::error!(
+                    correlation_id = %correlation_id,
+                    error = %msg,
+                    "External service error"
+                );
+                (
+                    StatusCode::BAD_GATEWAY,
+                    ErrorCode::ExternalServiceError,
+                    "An external service is temporarily unavailable. Please try again later.".to_string(),
+                    Some(msg.clone()),
+                )
+            }
+            
+            // Business Logic Errors
+            AppError::BusinessRule(ref msg) => {
+                tracing::info!(
+                    correlation_id = %correlation_id,
+                    rule = %msg,
+                    "Business rule violation"
+                );
+                (
+                    StatusCode::UNPROCESSABLE_ENTITY,
+                    ErrorCode::BusinessRuleViolation,
+                    format!("Operation not allowed: {}", sanitize_message(msg)),
+                    None,
+                )
+            }
+        };
+
+        let mut response = ErrorResponse::new(status, code, message);
+        response.correlation_id = correlation_id;
+        
+        // Only add details in debug mode
+        if let Some(details) = log_details {
+            response = response.with_details(details);
+        }
+
+        (status, Json(response)).into_response()
+    }
+}
+
+/// Sanitize database errors to prevent information disclosure
+fn sanitize_database_error(err: &sqlx::Error) -> String {
+    match err {
+        sqlx::Error::RowNotFound => "Record not found".to_string(),
+        sqlx::Error::ColumnNotFound(_) => "Database schema error".to_string(),
+        sqlx::Error::Database(_) => "Database constraint violation".to_string(),
+        sqlx::Error::PoolTimedOut => "Database connection timeout".to_string(),
+        sqlx::Error::PoolClosed => "Database connection closed".to_string(),
+        _ => "Database operation failed".to_string(),
+    }
+}
+
+/// Sanitize user messages to prevent information disclosure
+fn sanitize_message(msg: &str) -> String {
+    // Remove potential file paths
+    let msg = regex::Regex::new(r"(/[a-zA-Z0-9_\-./]+)")
+        .unwrap()
+        .replace_all(msg, "[path]");
+    
+    // Remove potential SQL fragments
+    let msg = regex::Regex::new(r"(?i)(SELECT|INSERT|UPDATE|DELETE|FROM|WHERE|JOIN)")
+        .unwrap()
+        .replace_all(&msg, "[sql]");
+    
+    // Remove potential connection strings
+    let msg = regex::Regex::new(r"(postgres|mysql|mongodb)://[^\s]+")
+        .unwrap()
+        .replace_all(&msg, "[connection]");
+    
+    // Remove potential API keys or tokens
+    let msg = regex::Regex::new(r"([a-zA-Z0-9_-]{32,})")
+        .unwrap()
+        .replace_all(&msg, "[token]");
+    
+    msg.to_string()
+}
+
+// Convert from common error types
+impl From<sqlx::Error> for AppError {
+    fn from(err: sqlx::Error) -> Self {
+        // Log the actual error internally but don't expose it
+        tracing::error!(error = ?err, "Database error");
+        AppError::Database(err)
+    }
+}
+
+impl From<serde_json::Error> for AppError {
+    fn from(err: serde_json::Error) -> Self {
+        tracing::debug!(error = %err, "JSON parsing error");
+        AppError::BadRequest("Invalid JSON format".to_string())
+    }
+}
+
+impl From<bcrypt::BcryptError> for AppError {
+    fn from(err: bcrypt::BcryptError) -> Self {
+        tracing::error!(error = ?err, "Password hashing error");
+        AppError::Cryptography("Password operation failed".to_string())
+    }
+}
+
+impl From<chrono::ParseError> for AppError {
+    fn from(err: chrono::ParseError) -> Self {
+        tracing::debug!(error = %err, "Date parsing error");
+        AppError::Validation("Invalid date format".to_string())
+    }
+}
+
+impl From<std::net::AddrParseError> for AppError {
+    fn from(err: std::net::AddrParseError) -> Self {
+        tracing::debug!(error = %err, "Address parsing error");
+        AppError::Validation("Invalid network address".to_string())
+    }
+}
+
+impl From<config::ConfigError> for AppError {
+    fn from(err: config::ConfigError) -> Self {
+        tracing::error!(error = ?err, "Configuration error");
+        AppError::Configuration("Configuration error".to_string())
+    }
+}
+
+impl From<jsonwebtoken::errors::Error> for AppError {
+    fn from(err: jsonwebtoken::errors::Error) -> Self {
+        use jsonwebtoken::errors::ErrorKind;
+        
+        tracing::debug!(error = ?err, "JWT error");
+        
+        match err.kind() {
+            ErrorKind::ExpiredSignature => AppError::TokenExpired,
+            ErrorKind::InvalidToken
+            | ErrorKind::InvalidSignature
+            | ErrorKind::InvalidAlgorithm
+            | ErrorKind::Base64(_)
+            | ErrorKind::Json(_)
+            | ErrorKind::Utf8(_) => AppError::TokenInvalid,
+            _ => AppError::Unauthorized,
+        }
+    }
+}
+
+impl From<uuid::Error> for AppError {
+    fn from(err: uuid::Error) -> Self {
+        tracing::debug!(error = %err, "UUID parsing error");
+        AppError::Validation("Invalid ID format".to_string())
+    }
+}
+
+impl From<redis::RedisError> for AppError {
+    fn from(err: redis::RedisError) -> Self {
+        tracing::error!(error = ?err, "Redis error");
+        AppError::Internal("Cache service error".to_string())
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_sanitize_message_removes_paths() {
+        let msg = "Error in /usr/local/app/src/main.rs";
+        let sanitized = sanitize_message(msg);
+        assert!(sanitized.contains("[path]"));
+        assert!(!sanitized.contains("/usr/local"));
+    }
+
+    #[test]
+    fn test_sanitize_message_removes_sql() {
+        let msg = "Error in SELECT * FROM users WHERE id = 1";
+        let sanitized = sanitize_message(msg);
+        assert!(sanitized.contains("[sql]"));
+        assert!(!sanitized.contains("SELECT"));
+    }
+
+    #[test]
+    fn test_sanitize_message_removes_connection_strings() {
+        let msg = "Failed to connect to postgres://user:pass@localhost:5432/db";
+        let sanitized = sanitize_message(msg);
+        assert!(sanitized.contains("[connection]"));
+        assert!(!sanitized.contains("postgres://"));
+    }
+
+    #[test]
+    fn test_sanitize_message_removes_tokens() {
+        let msg = "Invalid token: abc123def456ghi789jkl012mno345pqr678";
+        let sanitized = sanitize_message(msg);
+        assert!(sanitized.contains("[token]"));
+    }
+
+    #[test]
+    fn test_error_response_excludes_details_in_release() {
+        let response = ErrorResponse::new(
+            StatusCode::INTERNAL_SERVER_ERROR,
+            ErrorCode::InternalServerError,
+            "Test error".to_string(),
+        ).with_details("Sensitive internal details".to_string());
+        
+        // In release mode, details should be None
+        #[cfg(not(debug_assertions))]
+        assert!(response.details.is_none());
+        
+        // In debug mode, details should be present
+        #[cfg(debug_assertions)]
+        assert!(response.details.is_some());
+    }
+}
diff --git a/backend/src/handlers.rs b/backend/src/handlers.rs
new file mode 100644
index 00000000..34bbd887
--- /dev/null
+++ b/backend/src/handlers.rs
@@ -0,0 +1,15 @@
+// REST API handlers for ChainLogistics backend
+
+pub mod product;
+pub mod event;
+pub mod user;
+pub mod auth;
+pub mod stats;
+pub mod health;
+pub mod financial;
+pub mod compliance;
+pub mod carbon;
+pub mod digital_twin;
+pub mod api_keys;
+pub mod collaboration;
+
diff --git a/backend/src/handlers/api_keys.rs b/backend/src/handlers/api_keys.rs
new file mode 100644
index 00000000..d0e27a2d
--- /dev/null
+++ b/backend/src/handlers/api_keys.rs
@@ -0,0 +1,243 @@
+use axum::{
+    extract::{Path, State},
+    http::StatusCode,
+    response::Json,
+};
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+use crate::{
+    AppState,
+    error::AppError,
+    models::{ApiKey, ApiKeyTier, NewApiKey},
+};
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct CreateApiKeyRequest {
+    pub name: String,
+    pub tier: Option<ApiKeyTier>,
+    pub expires_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct ApiKeyCreatedResponse {
+    pub id: Uuid,
+    pub name: String,
+    pub tier: ApiKeyTier,
+    pub key: String,
+    pub expires_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct ApiKeyResponse {
+    pub id: Uuid,
+    pub name: String,
+    pub tier: ApiKeyTier,
+    pub is_active: bool,
+    pub expires_at: Option<DateTime<Utc>>,
+    pub last_used_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+}
+
+impl From<ApiKey> for ApiKeyResponse {
+    fn from(k: ApiKey) -> Self {
+        Self {
+            id: k.id,
+            name: k.name,
+            tier: k.tier,
+            is_active: k.is_active,
+            expires_at: k.expires_at,
+            last_used_at: k.last_used_at,
+            created_at: k.created_at,
+        }
+    }
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/keys",
+    tag = "api_keys",
+    request_body = CreateApiKeyRequest,
+    responses(
+        (status = 201, description = "API key created successfully", body = ApiKeyCreatedResponse),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn create_key(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<crate::middleware::auth::AuthContext>,
+    Json(req): Json<CreateApiKeyRequest>,
+) -> Result<(StatusCode, Json<ApiKeyCreatedResponse>), AppError> {
+    if req.name.trim().is_empty() {
+        return Err(AppError::Validation("Key name must not be empty".into()));
+    }
+
+    let plaintext = crate::services::ApiKeyService::generate_api_key();
+    let key_hash = crate::services::ApiKeyService::hash_api_key(&plaintext);
+
+    let tier = req.tier.unwrap_or(ApiKeyTier::Basic);
+    let rate_limit = match tier {
+        ApiKeyTier::Basic => 60,
+        ApiKeyTier::Standard => 300,
+        ApiKeyTier::Premium => 1000,
+        ApiKeyTier::Enterprise => 5000,
+    };
+
+    let new_key = NewApiKey {
+        user_id: auth.user_id,
+        key_hash,
+        name: req.name,
+        tier,
+        rate_limit_per_minute: rate_limit,
+        expires_at: req.expires_at,
+    };
+
+    let created = state.api_key_service.create_api_key(new_key).await?;
+
+    Ok((
+        StatusCode::CREATED,
+        Json(ApiKeyCreatedResponse {
+            id: created.id,
+            name: created.name,
+            tier: created.tier,
+            key: plaintext,
+            expires_at: created.expires_at,
+            created_at: created.created_at,
+        }),
+    ))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/keys",
+    tag = "api_keys",
+    responses(
+        (status = 200, description = "API keys listed successfully", body = Vec<ApiKeyResponse>),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn list_keys(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<crate::middleware::auth::AuthContext>,
+) -> Result<Json<Vec<ApiKeyResponse>>, AppError> {
+    let keys = state
+        .api_key_service
+        .list_api_keys(auth.user_id)
+        .await?
+        .into_iter()
+        .map(ApiKeyResponse::from)
+        .collect();
+
+    Ok(Json(keys))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/keys/{id}/revoke",
+    tag = "api_keys",
+    params(
+        ("id" = Uuid, Path, description = "API Key ID")
+    ),
+    responses(
+        (status = 204, description = "API key revoked successfully"),
+        (status = 404, description = "API key not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden - cannot revoke another user's key"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn revoke_key(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<crate::middleware::auth::AuthContext>,
+    Path(id): Path<Uuid>,
+) -> Result<StatusCode, AppError> {
+    let key = state
+        .api_key_service
+        .get_api_key(id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("API key {} not found", id)))?;
+
+    if key.user_id != auth.user_id {
+        return Err(AppError::Forbidden("Cannot revoke another user's key".into()));
+    }
+
+    state.api_key_service.revoke_api_key(id).await?;
+    Ok(StatusCode::NO_CONTENT)
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/keys/{id}/rotate",
+    tag = "api_keys",
+    params(
+        ("id" = Uuid, Path, description = "API Key ID")
+    ),
+    responses(
+        (status = 201, description = "API key rotated successfully", body = ApiKeyCreatedResponse),
+        (status = 404, description = "API key not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden - cannot rotate another user's key"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn rotate_key(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<crate::middleware::auth::AuthContext>,
+    Path(id): Path<Uuid>,
+) -> Result<(StatusCode, Json<ApiKeyCreatedResponse>), AppError> {
+    let old_key = state
+        .api_key_service
+        .get_api_key(id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("API key {} not found", id)))?;
+
+    if old_key.user_id != auth.user_id {
+        return Err(AppError::Forbidden("Cannot rotate another user's key".into()));
+    }
+
+    state.api_key_service.revoke_api_key(id).await?;
+
+    let plaintext = crate::services::ApiKeyService::generate_api_key();
+    let key_hash = crate::services::ApiKeyService::hash_api_key(&plaintext);
+
+    let new_key = NewApiKey {
+        user_id: auth.user_id,
+        key_hash,
+        name: format!("{} (rotated)", old_key.name),
+        tier: old_key.tier,
+        rate_limit_per_minute: old_key.rate_limit_per_minute,
+        expires_at: old_key.expires_at,
+    };
+
+    let created = state.api_key_service.create_api_key(new_key).await?;
+
+    Ok((
+        StatusCode::CREATED,
+        Json(ApiKeyCreatedResponse {
+            id: created.id,
+            name: created.name,
+            tier: created.tier,
+            key: plaintext,
+            expires_at: created.expires_at,
+            created_at: created.created_at,
+        }),
+    ))
+}
diff --git a/backend/src/handlers/auth.rs b/backend/src/handlers/auth.rs
new file mode 100644
index 00000000..5e518d82
--- /dev/null
+++ b/backend/src/handlers/auth.rs
@@ -0,0 +1,173 @@
+use axum::{extract::State, http::HeaderMap, Json};
+use serde::{Deserialize, Serialize};
+use utoipa::ToSchema;
+use crate::{AppState, database::UserRepository, error::AppError, models::{UserRole, NewUser, User}, middleware::{audit::{client_ip_from_headers, correlation_id_from_headers, user_agent_from_headers}, auth::Claims}, services::audit_service::{AuditEventCategory, AuditSeverity, NewAuditEvent}, validation::{validate_email, validate_string}};
+use bcrypt::verify;
+use jsonwebtoken::{encode, Header, EncodingKey};
+use sha2::{Digest, Sha256};
+use uuid::Uuid;
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct LoginRequest {
+    pub email: String,
+    pub password: String,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct AuthResponse {
+    pub token: String,
+    pub user: User,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct RegisterRequest {
+    pub email: String,
+    pub password: String,
+    pub role: UserRole,
+    pub stellar_address: Option<String>,
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/auth/login",
+    tag = "authentication",
+    request_body = LoginRequest,
+    responses(
+        (status = 200, description = "Login successful", body = AuthResponse),
+        (status = 401, description = "Invalid credentials"),
+        (status = 429, description = "Rate limit exceeded")
+    )
+)]
+pub async fn login(
+    State(state): State<AppState>,
+    headers: HeaderMap,
+    Json(req): Json<LoginRequest>,
+) -> Result<Json<AuthResponse>, AppError> {
+    validate_email(&req.email)?;
+
+    let user = match state.user_service.get_user_by_email(&req.email).await? {
+        Some(user) => user,
+        None => {
+            spawn_login_audit(state, headers, None, req.email, false);
+            return Err(AppError::Unauthorized);
+        }
+    };
+
+    if !user.is_active {
+        spawn_login_audit(state, headers, Some(user.id), req.email, false);
+        return Err(AppError::Unauthorized);
+    }
+
+    let is_valid = verify(&req.password, &user.password_hash)
+        .map_err(|_| AppError::Internal("Password verification failed".to_string()))?;
+
+    if !is_valid {
+        spawn_login_audit(state, headers, Some(user.id), req.email, false);
+        return Err(AppError::Unauthorized);
+    }
+
+    // Update last login
+    let _ = state.user_service.update_last_login(user.id).await;
+
+    // Issue JWT
+    let expiration = chrono::Utc::now()
+        .checked_add_signed(chrono::Duration::hours(24))
+        .expect("valid timestamp")
+        .timestamp() as usize;
+
+    let claims = Claims {
+        sub: user.id.to_string(),
+        exp: expiration,
+        role: user.role.clone(),
+    };
+
+    let token = encode(
+        &Header::default(),
+        &claims,
+        &EncodingKey::from_secret(state.config.jwt_secret.as_bytes()),
+    )
+    .map_err(|_| AppError::Internal("Token issuance failed".to_string()))?;
+
+    spawn_login_audit(state, headers, Some(user.id), req.email, true);
+
+    Ok(Json(AuthResponse { token, user }))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/auth/register",
+    tag = "authentication",
+    request_body = RegisterRequest,
+    responses(
+        (status = 201, description = "User registered successfully", body = User),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 409, description = "Email already registered"),
+        (status = 429, description = "Rate limit exceeded")
+    )
+)]
+pub async fn register(
+    State(state): State<AppState>,
+    Json(req): Json<RegisterRequest>,
+) -> Result<Json<User>, AppError> {
+    validate_email(&req.email)?;
+    validate_string("password", &req.password, 128)?;
+
+    let password_hash = crate::services::UserService::hash_password(&req.password).await?;
+
+    let new_user = NewUser {
+        email: req.email,
+        password_hash,
+        stellar_address: req.stellar_address,
+        role: req.role,
+    };
+
+    let user = state.user_service.create_user(new_user).await?;
+    Ok(Json(user))
+}
+
+fn spawn_login_audit(
+    state: AppState,
+    headers: HeaderMap,
+    user_id: Option<Uuid>,
+    email: String,
+    success: bool,
+) {
+    let event = NewAuditEvent {
+        correlation_id: correlation_id_from_headers(&headers),
+        user_id,
+        actor_api_key_id: None,
+        event_category: if success { AuditEventCategory::AuthEvent } else { AuditEventCategory::SecurityEvent },
+        event_type: "login".to_string(),
+        severity: if success { AuditSeverity::Info } else { AuditSeverity::Warn },
+        action: "admin_login".to_string(),
+        resource_type: Some("auth".to_string()),
+        target_resource_id: user_id.map(|id| id.to_string()),
+        http_method: Some("POST".to_string()),
+        http_path: Some("/api/v1/admin/auth/login".to_string()),
+        http_status: Some(if success { 200 } else { 401 }),
+        success,
+        error_code: if success { None } else { Some("UNAUTHORIZED".to_string()) },
+        business_context: None,
+        changes: serde_json::json!({ "email_hash": hash_audit_email(&email) }),
+        ip_address: client_ip_from_headers(&headers),
+        user_agent: user_agent_from_headers(&headers),
+    };
+
+    tokio::spawn(async move {
+        let correlation_id = event.correlation_id.clone();
+        if let Err(err) = state.audit_service.log(event).await {
+            tracing::warn!(
+                correlation_id = correlation_id.as_deref().unwrap_or("unknown"),
+                error = ?err,
+                "Failed to persist login audit event"
+            );
+        }
+    });
+}
+
+fn hash_audit_email(email: &str) -> String {
+    let normalized = email.trim().to_ascii_lowercase();
+    let mut hasher = Sha256::new();
+    hasher.update(normalized.as_bytes());
+    hex::encode(hasher.finalize())
+}
diff --git a/backend/src/handlers/batch.rs b/backend/src/handlers/batch.rs
new file mode 100644
index 00000000..27bc13dc
--- /dev/null
+++ b/backend/src/handlers/batch.rs
@@ -0,0 +1,484 @@
+use axum::{
+    extract::{Path, Query, State},
+    http::StatusCode,
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+use utoipa::ToSchema;
+use crate::models::batch::*;
+use crate::services::BatchRepository;
+use crate::AppState;
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListBatchesQuery {
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+    pub product_id: Option<String>,
+    pub lot_number: Option<String>,
+    pub status: Option<String>,
+    pub quality_grade: Option<String>,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct BatchListResponse {
+    pub batches: Vec<Batch>,
+    pub total: i64,
+    pub offset: i64,
+    pub limit: i64,
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/batches",
+    request_body = NewBatch,
+    responses(
+        (status = 201, description = "Batch created successfully", body = Batch),
+        (status = 400, description = "Invalid request"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn create_batch(
+    State(state): State<AppState>,
+    Json(batch): Json<NewBatch>,
+) -> Result<Json<Batch>, (StatusCode, String)> {
+    state.batch_service
+        .create_batch(batch)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/{id}",
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 200, description = "Batch retrieved successfully", body = Batch),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_batch(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<Batch>, (StatusCode, String)> {
+    state.batch_service
+        .get_batch(id)
+        .await
+        .map(|batch| batch.ok_or((StatusCode::NOT_FOUND, "Batch not found".to_string())))
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+        .map(Json)
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/number/{batch_number}",
+    params(
+        ("batch_number" = String, Path, description = "Batch number")
+    ),
+    responses(
+        (status = 200, description = "Batch retrieved successfully", body = Batch),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_batch_by_number(
+    State(state): State<AppState>,
+    Path(batch_number): Path<String>,
+) -> Result<Json<Batch>, (StatusCode, String)> {
+    state.batch_service
+        .get_batch_by_number(&batch_number)
+        .await
+        .map(|batch| batch.ok_or((StatusCode::NOT_FOUND, "Batch not found".to_string())))
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+        .map(Json)
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches",
+    params(
+        ("offset" = Option<i64>, Query, description = "Offset for pagination"),
+        ("limit" = Option<i64>, Query, description = "Limit for pagination"),
+        ("product_id" = Option<String>, Query, description = "Filter by product ID"),
+        ("lot_number" = Option<String>, Query, description = "Filter by lot number"),
+        ("status" = Option<String>, Query, description = "Filter by status"),
+        ("quality_grade" = Option<String>, Query, description = "Filter by quality grade")
+    ),
+    responses(
+        (status = 200, description = "Batches retrieved successfully", body = BatchListResponse),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn list_batches(
+    State(state): State<AppState>,
+    Query(query): Query<ListBatchesQuery>,
+) -> Result<Json<BatchListResponse>, (StatusCode, String)> {
+    let offset = query.offset.unwrap_or(0);
+    let limit = query.limit.unwrap_or(50);
+
+    let filters = BatchFilters {
+        product_id: query.product_id,
+        lot_number: query.lot_number,
+        status: query.status.and_then(|s| match s.as_str() {
+            "pending" => Some(BatchStatus::Pending),
+            "in_production" => Some(BatchStatus::InProduction),
+            "completed" => Some(BatchStatus::Completed),
+            "quality_check" => Some(BatchStatus::QualityCheck),
+            "quarantined" => Some(BatchStatus::Quarantined),
+            "shipped" => Some(BatchStatus::Shipped),
+            "recalled" => Some(BatchStatus::Recalled),
+            "disposed" => Some(BatchStatus::Disposed),
+            _ => None,
+        }),
+        quality_grade: query.quality_grade,
+        production_after: None,
+        production_before: None,
+        expiry_after: None,
+        expiry_before: None,
+    };
+
+    let batches = state.batch_service
+        .list_batches(offset, limit, Some(filters))
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let total = state.batch_service
+        .count_batches(Some(filters))
+        .await
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(BatchListResponse {
+        batches,
+        total,
+        offset,
+        limit,
+    }))
+}
+
+#[utoipa::path(
+    put,
+    path = "/api/v1/batches/{id}",
+    request_body = Batch,
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 200, description = "Batch updated successfully", body = Batch),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn update_batch(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+    Json(batch): Json<Batch>,
+) -> Result<Json<Batch>, (StatusCode, String)> {
+    state.batch_service
+        .update_batch(id, batch)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    delete,
+    path = "/api/v1/batches/{id}",
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 204, description = "Batch deleted successfully"),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn delete_batch(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<StatusCode, (StatusCode, String)> {
+    state.batch_service
+        .delete_batch(id)
+        .await
+        .map(|_| StatusCode::NO_CONTENT)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+// Genealogy endpoints
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/batches/genealogy",
+    request_body = NewBatchGenealogy,
+    responses(
+        (status = 201, description = "Genealogy created successfully", body = BatchGenealogy),
+        (status = 400, description = "Invalid request"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn create_genealogy(
+    State(state): State<AppState>,
+    Json(genealogy): Json<NewBatchGenealogy>,
+) -> Result<Json<BatchGenealogy>, (StatusCode, String)> {
+    state.batch_service
+        .create_genealogy(genealogy)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/{id}/genealogy",
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 200, description = "Genealogy tree retrieved successfully", body = BatchGenealogyTree),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_genealogy_tree(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<BatchGenealogyTree>, (StatusCode, String)> {
+    state.batch_service
+        .get_genealogy_tree(id)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+// Quality attributes endpoints
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/batches/quality-attributes",
+    request_body = NewBatchQualityAttribute,
+    responses(
+        (status = 201, description = "Quality attribute created successfully", body = BatchQualityAttribute),
+        (status = 400, description = "Invalid request"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn create_quality_attribute(
+    State(state): State<AppState>,
+    Json(attribute): Json<NewBatchQualityAttribute>,
+) -> Result<Json<BatchQualityAttribute>, (StatusCode, String)> {
+    state.batch_service
+        .create_quality_attribute(attribute)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/{id}/quality-attributes",
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 200, description = "Quality attributes retrieved successfully", body = Vec<BatchQualityAttribute>),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_quality_attributes(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<Vec<BatchQualityAttribute>>, (StatusCode, String)> {
+    state.batch_service
+        .get_quality_attributes(id)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+// Recall endpoints
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/batches/recalls",
+    request_body = NewBatchRecall,
+    responses(
+        (status = 201, description = "Recall created successfully", body = BatchRecall),
+        (status = 400, description = "Invalid request"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn create_recall(
+    State(state): State<AppState>,
+    Json(recall): Json<NewBatchRecall>,
+) -> Result<Json<BatchRecall>, (StatusCode, String)> {
+    state.batch_service
+        .create_recall(recall)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/recalls/{id}",
+    params(
+        ("id" = Uuid, Path, description = "Recall ID")
+    ),
+    responses(
+        (status = 200, description = "Recall retrieved successfully", body = BatchRecall),
+        (status = 404, description = "Recall not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_recall(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<BatchRecall>, (StatusCode, String)> {
+    state.batch_service
+        .get_recall(id)
+        .await
+        .map(|recall| recall.ok_or((StatusCode::NOT_FOUND, "Recall not found".to_string())))
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+        .map(Json)
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/{id}/recalls",
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 200, description = "Batch recalls retrieved successfully", body = Vec<BatchRecall>),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_batch_recalls(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<Vec<BatchRecall>>, (StatusCode, String)> {
+    state.batch_service
+        .get_batch_recalls(id)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/recalls/active",
+    params(
+        ("offset" = Option<i64>, Query, description = "Offset for pagination"),
+        ("limit" = Option<i64>, Query, description = "Limit for pagination")
+    ),
+    responses(
+        (status = 200, description = "Active recalls retrieved successfully", body = Vec<BatchRecall>),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn list_active_recalls(
+    State(state): State<AppState>,
+    Query(query): Query<ListBatchesQuery>,
+) -> Result<Json<Vec<BatchRecall>>, (StatusCode, String)> {
+    let offset = query.offset.unwrap_or(0);
+    let limit = query.limit.unwrap_or(50);
+
+    state.batch_service
+        .list_active_recalls(offset, limit)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    put,
+    path = "/api/v1/batches/recalls/{id}",
+    request_body = BatchRecall,
+    params(
+        ("id" = Uuid, Path, description = "Recall ID")
+    ),
+    responses(
+        (status = 200, description = "Recall updated successfully", body = BatchRecall),
+        (status = 404, description = "Recall not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn update_recall(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+    Json(recall): Json<BatchRecall>,
+) -> Result<Json<BatchRecall>, (StatusCode, String)> {
+    state.batch_service
+        .update_recall(id, recall)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+// Inventory endpoints
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/batches/inventory",
+    request_body = NewBatchInventory,
+    responses(
+        (status = 201, description = "Inventory transaction created successfully", body = BatchInventory),
+        (status = 400, description = "Invalid request"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn create_inventory_transaction(
+    State(state): State<AppState>,
+    Json(inventory): Json<NewBatchInventory>,
+) -> Result<Json<BatchInventory>, (StatusCode, String)> {
+    state.batch_service
+        .create_inventory_transaction(inventory)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/batches/{id}/inventory",
+    params(
+        ("id" = Uuid, Path, description = "Batch ID")
+    ),
+    responses(
+        (status = 200, description = "Batch inventory retrieved successfully", body = Vec<BatchInventory>),
+        (status = 404, description = "Batch not found"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "batches"
+)]
+pub async fn get_batch_inventory(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<Vec<BatchInventory>>, (StatusCode, String)> {
+    state.batch_service
+        .get_batch_inventory(id)
+        .await
+        .map(Json)
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))
+}
diff --git a/backend/src/handlers/carbon.rs b/backend/src/handlers/carbon.rs
new file mode 100644
index 00000000..d2ca2f7e
--- /dev/null
+++ b/backend/src/handlers/carbon.rs
@@ -0,0 +1,438 @@
+use axum::{
+    extract::{Path, Query, State},
+    http::StatusCode,
+    response::{IntoResponse, Json},
+};
+use uuid::Uuid;
+
+use crate::{
+    error::AppError,
+    models::carbon::{
+        CalculateFootprintRequest, CreateTradeRequest, GenerateCreditRequest,
+        GenerateReportRequest, ListCreditsQuery, ListTradesQuery, PurchaseCreditRequest,
+        RequestVerificationRequest, RetireCreditRequest,
+    },
+    AppState,
+};
+
+// ── Footprint ─────────────────────────────────────────────────────────────────
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/footprint/calculate",
+    tag = "carbon",
+    request_body = CalculateFootprintRequest,
+    responses(
+        (status = 201, description = "Carbon footprint calculated successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/footprint/calculate
+pub async fn calculate_footprint(
+    State(state): State<AppState>,
+    Json(req): Json<CalculateFootprintRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    let record = state.carbon_service.calculate_footprint(&req).await?;
+    Ok((StatusCode::CREATED, Json(record)))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/footprint/preview",
+    tag = "carbon",
+    request_body = CalculateFootprintRequest,
+    responses(
+        (status = 200, description = "Footprint preview generated successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/footprint/preview
+pub async fn preview_footprint(
+    State(state): State<AppState>,
+    Json(req): Json<CalculateFootprintRequest>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let breakdown = state.carbon_service.preview_footprint(&req);
+    Ok(Json(serde_json::json!(breakdown)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/footprint/{product_id}",
+    tag = "carbon",
+    params(
+        ("product_id" = String, Path, description = "Product ID")
+    ),
+    responses(
+        (status = 200, description = "Footprints listed successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/footprint/:product_id
+pub async fn list_footprints(
+    State(state): State<AppState>,
+    Path(product_id): Path<String>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let records = state.carbon_service.list_footprints(&product_id).await?;
+    Ok(Json(serde_json::json!({ "footprints": records, "total": records.len() })))
+}
+
+// ── Credits ───────────────────────────────────────────────────────────────────
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/credits/generate",
+    tag = "carbon",
+    request_body = GenerateCreditRequest,
+    responses(
+        (status = 201, description = "Carbon credit generated successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/credits/generate
+pub async fn generate_credit(
+    State(state): State<AppState>,
+    Json(req): Json<GenerateCreditRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real owner_id from auth context
+    let owner_id = Uuid::nil();
+    let credit = state.carbon_service.generate_credit(owner_id, &req).await?;
+    Ok((StatusCode::CREATED, Json(credit)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/credits",
+    tag = "carbon",
+    params(ListCreditsQuery),
+    responses(
+        (status = 200, description = "Credits listed successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/credits
+pub async fn list_credits(
+    State(state): State<AppState>,
+    Query(query): Query<ListCreditsQuery>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    // TODO: extract real owner_id from auth context
+    let owner_id = Uuid::nil();
+    let credits = state.carbon_service.list_credits(owner_id, &query).await?;
+    Ok(Json(serde_json::json!({ "credits": credits, "total": credits.len() })))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/credits/{id}",
+    tag = "carbon",
+    params(
+        ("id" = Uuid, Path, description = "Credit ID")
+    ),
+    responses(
+        (status = 200, description = "Credit retrieved successfully"),
+        (status = 404, description = "Credit not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/credits/:id
+pub async fn get_credit(
+    State(state): State<AppState>,
+    Path(id): Path<Uuid>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let credit = state.carbon_service.get_credit(id).await?;
+    Ok(Json(serde_json::json!(credit)))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/credits/retire",
+    tag = "carbon",
+    request_body = RetireCreditRequest,
+    responses(
+        (status = 200, description = "Credit retired successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/credits/retire
+pub async fn retire_credit(
+    State(state): State<AppState>,
+    Json(req): Json<RetireCreditRequest>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    // TODO: extract real owner_id from auth context
+    let owner_id = Uuid::nil();
+    let credit = state.carbon_service.retire_credit(owner_id, &req).await?;
+    Ok(Json(serde_json::json!(credit)))
+}
+
+// ── Marketplace ───────────────────────────────────────────────────────────────
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/market",
+    tag = "carbon",
+    responses(
+        (status = 200, description = "Market summary retrieved successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/market
+pub async fn market_summary(
+    State(state): State<AppState>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let summary = state.carbon_service.get_market_summary().await?;
+    Ok(Json(serde_json::json!(summary)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/market/trades",
+    tag = "carbon",
+    params(ListTradesQuery),
+    responses(
+        (status = 200, description = "Trades listed successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/market/trades
+pub async fn list_trades(
+    State(state): State<AppState>,
+    Query(query): Query<ListTradesQuery>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let trades = state.carbon_service.list_marketplace(&query).await?;
+    Ok(Json(serde_json::json!({ "trades": trades, "total": trades.len() })))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/market/list",
+    tag = "carbon",
+    request_body = CreateTradeRequest,
+    responses(
+        (status = 201, description = "Credit listed for sale successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/market/list
+pub async fn list_credit_for_sale(
+    State(state): State<AppState>,
+    Json(req): Json<CreateTradeRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real seller_id from auth context
+    let seller_id = Uuid::nil();
+    let trade = state.carbon_service.create_trade(seller_id, &req).await?;
+    Ok((StatusCode::CREATED, Json(trade)))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/market/purchase",
+    tag = "carbon",
+    request_body = PurchaseCreditRequest,
+    responses(
+        (status = 200, description = "Credit purchased successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/market/purchase
+pub async fn purchase_credit(
+    State(state): State<AppState>,
+    Json(req): Json<PurchaseCreditRequest>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    // TODO: extract real buyer_id from auth context
+    let buyer_id = Uuid::nil();
+    let trade = state.carbon_service.purchase_credit(buyer_id, &req).await?;
+    Ok(Json(serde_json::json!(trade)))
+}
+
+// ── Verification ──────────────────────────────────────────────────────────────
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/verify",
+    tag = "carbon",
+    request_body = RequestVerificationRequest,
+    responses(
+        (status = 201, description = "Verification requested successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/verify
+pub async fn request_verification(
+    State(state): State<AppState>,
+    Json(req): Json<RequestVerificationRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real requester_id from auth context
+    let requester_id = Uuid::nil();
+    let verification = state
+        .carbon_service
+        .request_verification(requester_id, &req)
+        .await?;
+    Ok((StatusCode::CREATED, Json(verification)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/verify/{credit_id}",
+    tag = "carbon",
+    params(
+        ("credit_id" = Uuid, Path, description = "Credit ID")
+    ),
+    responses(
+        (status = 200, description = "Verifications listed successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/verify/:credit_id
+pub async fn list_verifications(
+    State(state): State<AppState>,
+    Path(credit_id): Path<Uuid>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let verifications = state.carbon_service.list_verifications(credit_id).await?;
+    Ok(Json(
+        serde_json::json!({ "verifications": verifications, "total": verifications.len() }),
+    ))
+}
+
+// ── Reporting ─────────────────────────────────────────────────────────────────
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/carbon/reports",
+    tag = "carbon",
+    request_body = GenerateReportRequest,
+    responses(
+        (status = 201, description = "Report generated successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// POST /api/v1/carbon/reports
+pub async fn generate_report(
+    State(state): State<AppState>,
+    Json(req): Json<GenerateReportRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real owner_id from auth context
+    let owner_id = Uuid::nil();
+    let report = state.carbon_service.generate_report(owner_id, &req).await?;
+    Ok((StatusCode::CREATED, Json(report)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/reports",
+    tag = "carbon",
+    responses(
+        (status = 200, description = "Reports listed successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// GET /api/v1/carbon/reports
+pub async fn list_reports(
+    State(state): State<AppState>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    // TODO: extract real owner_id from auth context
+    let owner_id = Uuid::nil();
+    let reports = state.carbon_service.list_reports(owner_id).await?;
+    Ok(Json(serde_json::json!({ "reports": reports, "total": reports.len() })))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/dashboard",
+    tag = "carbon",
+    responses(
+        (status = 200, description = "Sustainability dashboard generated successfully"),
+        (status = 401, description = "Unauthorized")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn get_sustainability_dashboard(
+    State(state): State<AppState>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let dashboard = state.carbon_service.get_sustainability_dashboard().await?;
+    Ok(Json(dashboard))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/carbon/supplier-score/{supplier_address}",
+    tag = "carbon",
+    params(
+        ("supplier_address" = String, Path, description = "Supplier Stellar Address")
+    ),
+    responses(
+        (status = 200, description = "Supplier sustainability score retrieved"),
+        (status = 401, description = "Unauthorized")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn get_supplier_score(
+    State(state): State<AppState>,
+    Path(supplier_address): Path<String>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let score = state.carbon_service.get_supplier_score(&supplier_address).await?;
+    Ok(Json(serde_json::json!({ "supplier_address": supplier_address, "sustainability_score": score })))
+}
+
diff --git a/backend/src/handlers/collaboration.rs b/backend/src/handlers/collaboration.rs
new file mode 100644
index 00000000..c6533035
--- /dev/null
+++ b/backend/src/handlers/collaboration.rs
@@ -0,0 +1,58 @@
+use axum::{
+    extract::{Path, State},
+    http::StatusCode,
+    response::{IntoResponse, Json},
+};
+use uuid::Uuid;
+use crate::{
+    error::AppError,
+    models::collaboration::{ShareProductRequest, CreateCollaborationRequest, UpdateCollaborationRequest},
+    AppState,
+};
+
+pub async fn share_product(
+    State(state): State<AppState>,
+    Json(req): Json<ShareProductRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real actor_id from JWT auth context
+    let actor_id = Uuid::nil();
+    let share = state.collaboration_service.share_product(actor_id, req).await?;
+    Ok((StatusCode::CREATED, Json(share)))
+}
+
+pub async fn list_shares(
+    State(state): State<AppState>,
+    Path(product_id): Path<String>,
+) -> Result<impl IntoResponse, AppError> {
+    let shares = state.collaboration_service.list_shares(&product_id).await?;
+    Ok(Json(shares))
+}
+
+pub async fn create_collaboration_request(
+    State(state): State<AppState>,
+    Json(req): Json<CreateCollaborationRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real requester_id from JWT auth context
+    let requester_id = Uuid::nil();
+    let request = state.collaboration_service.create_collaboration_request(requester_id, req).await?;
+    Ok((StatusCode::CREATED, Json(request)))
+}
+
+pub async fn update_collaboration_request(
+    State(state): State<AppState>,
+    Path(request_id): Path<Uuid>,
+    Json(req): Json<UpdateCollaborationRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    // TODO: extract real actor_id from JWT auth context
+    let actor_id = Uuid::nil();
+    let updated = state.collaboration_service.update_collaboration_request(actor_id, request_id, &req.status).await?;
+    Ok(Json(updated))
+}
+
+pub async fn list_audit_trail(
+    State(state): State<AppState>,
+    Path((entity_type, entity_id)): Path<(String, String)>,
+) -> Result<impl IntoResponse, AppError> {
+    let trails = state.collaboration_service.list_audit_trail(&entity_type, &entity_id).await?;
+    Ok(Json(trails))
+}
diff --git a/backend/src/handlers/compliance.rs b/backend/src/handlers/compliance.rs
new file mode 100644
index 00000000..89ae30e5
--- /dev/null
+++ b/backend/src/handlers/compliance.rs
@@ -0,0 +1,138 @@
+use axum::{
+    extract::{Path, Query, State, Json},
+    http::StatusCode,
+    response::IntoResponse,
+};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use utoipa::ToSchema;
+use crate::{AppState, error::AppError};
+use crate::compliance::{ComplianceValidator, ComplianceRule, ComplianceType};
+use crate::services::audit_service::AuditLogQuery;
+
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct ComplianceCheckRequest {
+    pub compliance_type: String,
+    pub data: Value,
+}
+
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct ComplianceReportResponse {
+    pub product_id: String,
+    pub compliance_checks: Vec<Value>,
+    pub overall_status: String,
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/compliance/check",
+    tag = "compliance",
+    request_body = ComplianceCheckRequest,
+    responses(
+        (status = 200, description = "Compliance check completed successfully"),
+        (status = 400, description = "Bad request - unknown compliance type"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden - insufficient permissions"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn check_compliance(
+    State(_state): State<AppState>,
+    Json(req): Json<ComplianceCheckRequest>,
+) -> impl IntoResponse {
+    let compliance_type = match req.compliance_type.as_str() {
+        "gdpr" => ComplianceType::GDPR,
+        "fda_21_cfr_11" => ComplianceType::FDA21CFR11,
+        "fsma" => ComplianceType::FSMA,
+        "conflict_minerals" => ComplianceType::ConflictMinerals,
+        "organic_certification" => ComplianceType::OrganicCertification,
+        _ => return (StatusCode::BAD_REQUEST, Json(serde_json::json!({"error": "Unknown compliance type"}))).into_response(),
+    };
+
+    let rule = match compliance_type {
+        ComplianceType::GDPR => ComplianceRule::gdpr_data_residency(),
+        ComplianceType::FDA21CFR11 => ComplianceRule::fda_electronic_signature(),
+        ComplianceType::FSMA => ComplianceRule::fsma_traceability(),
+        ComplianceType::ConflictMinerals => ComplianceRule::conflict_minerals_due_diligence(),
+        ComplianceType::OrganicCertification => ComplianceRule::organic_certification(),
+        _ => return (StatusCode::BAD_REQUEST, Json(serde_json::json!({"error": "Unknown compliance type"}))).into_response(),
+    };
+
+    let result = ComplianceValidator::validate(&rule, &req.data);
+
+    (StatusCode::OK, Json(serde_json::json!({
+        "is_compliant": result.is_compliant,
+        "compliance_type": result.compliance_type.as_str(),
+        "violations": result.violations,
+        "warnings": result.warnings,
+    }))).into_response()
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/compliance/report/{product_id}",
+    tag = "compliance",
+    params(
+        ("product_id" = String, Path, description = "Product ID")
+    ),
+    responses(
+        (status = 200, description = "Compliance report retrieved successfully", body = ComplianceReportResponse),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden - insufficient permissions"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_compliance_report(
+    State(_state): State<AppState>,
+    Path(product_id): Path<String>,
+) -> impl IntoResponse {
+    // The current backend does not yet persist compliance checks.
+    // Returning a structured placeholder keeps the API stable while storage is implemented.
+    let report = ComplianceReportResponse {
+        product_id,
+        compliance_checks: vec![],
+        overall_status: "not_implemented".to_string(),
+    };
+
+    (StatusCode::NOT_IMPLEMENTED, Json(report)).into_response()
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/audit/report",
+    tag = "compliance",
+    responses(
+        (status = 200, description = "Audit report generated successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden - insufficient permissions"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn generate_audit_report(
+    State(state): State<AppState>,
+    Query(filters): Query<AuditLogQuery>,
+) -> Result<Json<Value>, AppError> {
+    let limit = filters.limit.unwrap_or(100).clamp(1, 500);
+    let offset = filters.offset.unwrap_or(0).max(0);
+    let events = state.audit_service.query(filters).await?;
+
+    let report = serde_json::json!({
+        "report_type": "audit",
+        "generated_at": chrono::Utc::now().to_rfc3339(),
+        "limit": limit,
+        "offset": offset,
+        "returned_events": events.len(),
+        "events": events
+    });
+
+    Ok(Json(report))
+}
diff --git a/backend/src/handlers/digital_twin.rs b/backend/src/handlers/digital_twin.rs
new file mode 100644
index 00000000..8bd07e3e
--- /dev/null
+++ b/backend/src/handlers/digital_twin.rs
@@ -0,0 +1,220 @@
+use axum::{
+    extract::{Path, Query, State},
+    http::StatusCode,
+    response::IntoResponse,
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+
+use crate::{
+    error::AppError,
+    models::digital_twin::*,
+    AppState,
+    validation::{validate_string, sanitize_input},
+};
+
+/// Create a new digital twin
+pub async fn create_digital_twin(
+    State(state): State<AppState>,
+    Json(mut request): Json<CreateDigitalTwinRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    validate_string("name", &request.name, 128)?;
+    validate_string("description", &request.description, 1024)?;
+    
+    request.name = sanitize_input(&request.name);
+    request.description = sanitize_input(&request.description);
+
+    let twin = state
+        .digital_twin_service
+        .create_twin(request)
+        .await?;
+
+    Ok((StatusCode::CREATED, Json(twin)))
+}
+
+/// Get digital twin by ID
+pub async fn get_digital_twin(
+    State(state): State<AppState>,
+    Path(twin_id): Path<Uuid>,
+) -> Result<impl IntoResponse, AppError> {
+    let twin = state
+        .digital_twin_service
+        .get_twin(twin_id)
+        .await?;
+
+    Ok(Json(twin))
+}
+
+/// Get all digital twins for a product
+pub async fn get_product_twins(
+    State(state): State<AppState>,
+    Path(product_id): Path<String>,
+) -> Result<impl IntoResponse, AppError> {
+    let twins = state
+        .digital_twin_service
+        .get_twins_by_product(&product_id)
+        .await?;
+
+    Ok(Json(twins))
+}
+
+/// Update digital twin state
+pub async fn update_twin_state(
+    State(state): State<AppState>,
+    Path(twin_id): Path<Uuid>,
+    Json(request): Json<UpdateTwinStateRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    let state_record = state
+        .digital_twin_service
+        .update_twin_state(twin_id, request)
+        .await?;
+
+    Ok(Json(state_record))
+}
+
+/// Get state history for a twin
+#[derive(Debug, Deserialize)]
+pub struct StateHistoryQuery {
+    #[serde(default = "default_limit")]
+    limit: i64,
+}
+
+fn default_limit() -> i64 {
+    100
+}
+
+pub async fn get_state_history(
+    State(state): State<AppState>,
+    Path(twin_id): Path<Uuid>,
+    Query(query): Query<StateHistoryQuery>,
+) -> Result<impl IntoResponse, AppError> {
+    let states = state
+        .digital_twin_service
+        .get_state_history(twin_id, query.limit)
+        .await?;
+
+    Ok(Json(states))
+}
+
+/// Create a simulation
+pub async fn create_simulation(
+    State(state): State<AppState>,
+    Json(request): Json<CreateSimulationRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    let simulation = state
+        .digital_twin_service
+        .create_simulation(request)
+        .await?;
+
+    Ok((StatusCode::CREATED, Json(simulation)))
+}
+
+/// Run a simulation
+pub async fn run_simulation(
+    State(state): State<AppState>,
+    Path(simulation_id): Path<Uuid>,
+) -> Result<impl IntoResponse, AppError> {
+    let result = state
+        .digital_twin_service
+        .run_simulation(simulation_id)
+        .await?;
+
+    Ok(Json(result))
+}
+
+/// Get simulation by ID
+pub async fn get_simulation(
+    State(state): State<AppState>,
+    Path(simulation_id): Path<Uuid>,
+) -> Result<impl IntoResponse, AppError> {
+    let simulation = state
+        .digital_twin_service
+        .get_simulation(simulation_id)
+        .await?;
+
+    Ok(Json(simulation))
+}
+
+/// List simulations for a twin
+pub async fn list_simulations(
+    State(state): State<AppState>,
+    Path(twin_id): Path<Uuid>,
+) -> Result<impl IntoResponse, AppError> {
+    let simulations = state
+        .digital_twin_service
+        .list_simulations(twin_id)
+        .await?;
+
+    Ok(Json(simulations))
+}
+
+/// Create a prediction
+pub async fn create_prediction(
+    State(state): State<AppState>,
+    Json(request): Json<PredictionRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    let prediction = state
+        .digital_twin_service
+        .create_prediction(request)
+        .await?;
+
+    Ok((StatusCode::CREATED, Json(prediction)))
+}
+
+/// Get twin analytics
+pub async fn get_twin_analytics(
+    State(state): State<AppState>,
+    Path(twin_id): Path<Uuid>,
+) -> Result<impl IntoResponse, AppError> {
+    let analytics = state
+        .digital_twin_service
+        .get_twin_analytics(twin_id)
+        .await?;
+
+    Ok(Json(analytics))
+}
+
+/// Health check for digital twin service
+pub async fn digital_twin_health() -> impl IntoResponse {
+    Json(serde_json::json!({
+        "service": "digital_twin",
+        "status": "healthy",
+        "features": [
+            "twin_management",
+            "state_tracking",
+            "simulations",
+            "predictions",
+            "optimizations",
+            "analytics"
+        ]
+    }))
+}
+
+#[derive(Debug, Serialize)]
+pub struct DigitalTwinStats {
+    pub total_twins: i64,
+    pub active_twins: i64,
+    pub total_simulations: i64,
+    pub completed_simulations: i64,
+    pub total_predictions: i64,
+    pub active_optimizations: i64,
+}
+
+/// Get overall digital twin statistics
+pub async fn get_digital_twin_stats(
+    State(state): State<AppState>,
+) -> Result<impl IntoResponse, AppError> {
+    // This would query the database for actual stats
+    // Simplified implementation for now
+    let stats = DigitalTwinStats {
+        total_twins: 0,
+        active_twins: 0,
+        total_simulations: 0,
+        completed_simulations: 0,
+        total_predictions: 0,
+        active_optimizations: 0,
+    };
+
+    Ok(Json(stats))
+}
diff --git a/backend/src/handlers/event.rs b/backend/src/handlers/event.rs
new file mode 100644
index 00000000..357bcdf6
--- /dev/null
+++ b/backend/src/handlers/event.rs
@@ -0,0 +1,326 @@
+use axum::{
+    extract::{State, Path, Query},
+    http::StatusCode,
+    response::Json,
+};
+use chrono::{DateTime, TimeZone, Utc};
+use serde::{Deserialize, Deserializer, Serialize};
+use utoipa::ToSchema;
+
+use crate::{
+    AppState,
+    error::AppError,
+    models::{TrackingEvent, NewTrackingEvent},
+    validation::{validate_string, validate_stellar_address, sanitize_input, validate_product_id, validate_location, sanitize_json_metadata},
+};
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListEventsQuery {
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+    #[serde(alias = "productId")]
+    pub product_id: Option<String>,
+    #[serde(alias = "eventType")]
+    pub event_type: Option<String>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct CreateEventRequest {
+    #[serde(alias = "productId")]
+    pub product_id: String,
+    #[serde(alias = "actorAddress")]
+    pub actor_address: String,
+    #[serde(deserialize_with = "deserialize_flexible_timestamp")]
+    pub timestamp: chrono::DateTime<chrono::Utc>,
+    #[serde(alias = "eventType")]
+    pub event_type: String,
+    pub location: String,
+    #[serde(alias = "dataHash")]
+    pub data_hash: String,
+    #[serde(default)]
+    pub note: String,
+    #[serde(default = "default_metadata")]
+    pub metadata: serde_json::Value,
+}
+
+fn default_metadata() -> serde_json::Value {
+    serde_json::json!({})
+}
+
+fn deserialize_flexible_timestamp<'de, D>(deserializer: D) -> Result<DateTime<Utc>, D::Error>
+where
+    D: Deserializer<'de>,
+{
+    let value = serde_json::Value::deserialize(deserializer)?;
+
+    match value {
+        serde_json::Value::Number(n) => {
+            let raw = n
+                .as_i64()
+                .ok_or_else(|| serde::de::Error::custom("timestamp must be an integer"))?;
+            let seconds = if raw > 10_000_000_000 { raw / 1000 } else { raw };
+            Utc.timestamp_opt(seconds, 0)
+                .single()
+                .ok_or_else(|| serde::de::Error::custom("invalid timestamp"))
+        }
+        serde_json::Value::String(s) => DateTime::parse_from_rfc3339(&s)
+            .map(|dt| dt.with_timezone(&Utc))
+            .map_err(|_| serde::de::Error::custom("timestamp must be RFC3339 or unix time")),
+        _ => Err(serde::de::Error::custom(
+            "timestamp must be RFC3339 string or unix number",
+        )),
+    }
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct EventResponse {
+    pub id: i64,
+    pub product_id: String,
+    pub actor_address: String,
+    pub timestamp: chrono::DateTime<chrono::Utc>,
+    pub event_type: String,
+    pub location: String,
+    pub data_hash: String,
+    pub note: String,
+    pub metadata: serde_json::Value,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct PaginatedEventsResponse {
+    pub events: Vec<EventResponse>,
+    pub total: i64,
+    pub offset: i64,
+    pub limit: i64,
+}
+
+impl From<TrackingEvent> for EventResponse {
+    fn from(event: TrackingEvent) -> Self {
+        Self {
+            id: event.id,
+            product_id: event.product_id,
+            actor_address: event.actor_address,
+            timestamp: event.timestamp,
+            event_type: event.event_type,
+            location: event.location,
+            data_hash: event.data_hash,
+            note: event.note,
+            metadata: event.metadata,
+            created_at: event.created_at,
+        }
+    }
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/events",
+    tag = "events",
+    params(ListEventsQuery),
+    responses(
+        (status = 200, description = "Events listed successfully", body = PaginatedEventsResponse),
+        (status = 400, description = "Bad request - product_id is required"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn list_events(
+    State(state): State<AppState>,
+    Query(query): Query<ListEventsQuery>,
+) -> Result<Json<PaginatedEventsResponse>, AppError> {
+    let offset = query.offset.unwrap_or(0);
+    let limit = query.limit.unwrap_or(20).min(100);
+
+    let (events, total) = if let Some(product_id) = query.product_id {
+        validate_product_id(&product_id)?;
+        let sanitized_product_id = sanitize_input(&product_id);
+
+        let events = if let Some(event_type) = query.event_type {
+            validate_string("event_type", &event_type, 64)?;
+            state.event_service
+                .list_events_by_type(&sanitized_product_id, &sanitize_input(&event_type), offset, limit)
+                .await?
+        } else {
+            state.event_service
+                .list_events_by_product(&sanitized_product_id, offset, limit)
+                .await?
+        };
+
+        let total = if query.event_type.is_some() {
+            events.len() as i64
+        } else {
+            state.event_service
+                .count_events_by_product(&sanitized_product_id)
+                .await?
+        };
+
+        (events, total)
+    } else {
+        return Err(AppError::BadRequest("product_id is required".to_string()));
+    };
+
+    Ok(Json(PaginatedEventsResponse {
+        events: events.into_iter().map(EventResponse::from).collect(),
+        total,
+        offset,
+        limit,
+    }))
+}
+
+const ALLOWED_EVENT_TYPES: &[&str] = &[
+    "HARVEST", "PROCESS", "PACKAGE", "SHIP", "RECEIVE",
+    "QUALITY_CHECK", "TRANSFER", "REGISTER", "CHECKPOINT",
+];
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/events",
+    tag = "events",
+    request_body = CreateEventRequest,
+    responses(
+        (status = 201, description = "Event created successfully", body = EventResponse),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden - insufficient permissions"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn create_event(
+    State(state): State<AppState>,
+    Json(request): Json<CreateEventRequest>,
+) -> Result<Json<EventResponse>, AppError> {
+    // Validate inputs
+    validate_product_id(&request.product_id)?;
+    validate_stellar_address(&request.actor_address)?;
+    validate_location(&request.location)?;
+    if request.note.len() > 256 {
+        return Err(AppError::Validation("note must not exceed 256 characters".to_string()));
+    }
+    if !ALLOWED_EVENT_TYPES.contains(&request.event_type.as_str()) {
+        return Err(AppError::Validation(format!(
+            "Invalid event_type '{}'. Allowed: {}",
+            request.event_type,
+            ALLOWED_EVENT_TYPES.join(", ")
+        )));
+    }
+    // Reject future timestamps
+    if request.timestamp > chrono::Utc::now() {
+        return Err(AppError::Validation("timestamp must not be in the future".to_string()));
+    }
+
+    let new_event = NewTrackingEvent {
+        product_id: sanitize_input(&request.product_id),
+        actor_address: request.actor_address,
+        timestamp: request.timestamp,
+        event_type: request.event_type,
+        location: sanitize_input(&request.location),
+        data_hash: request.data_hash,
+        note: sanitize_input(&request.note),
+        metadata: {
+            let mut meta = request.metadata;
+            sanitize_json_metadata(&mut meta);
+            meta
+        },
+    };
+
+    let event = state.event_service.create_event(new_event).await?;
+
+    // Automated recall trigger: failed quality check creates a recall and queues notifications.
+    if event.event_type == "QUALITY_CHECK" {
+        let passed = event
+            .metadata
+            .get("passed")
+            .and_then(|v| v.as_bool());
+        let result = event
+            .metadata
+            .get("result")
+            .and_then(|v| v.as_str())
+            .map(|s| s.to_ascii_lowercase());
+        let is_failed = passed == Some(false) || matches!(result.as_deref(), Some("fail") | Some("failed"));
+
+        if is_failed {
+            let batch_id = event
+                .metadata
+                .get("batch_id")
+                .and_then(|v| v.as_str())
+                .map(|s| s.to_string());
+
+            if let Some(product) = state.product_service.get_product(&event.product_id).await? {
+                let title = format!("Automated recall: failed quality check for {}", event.product_id);
+                let reason = "Quality check failed";
+
+                let recall = state
+                    .recall_service
+                    .create_recall(
+                        &event.product_id,
+                        batch_id.as_deref(),
+                        &title,
+                        reason,
+                        "high",
+                        "quality_check",
+                        Some(&event.actor_address),
+                        Some(event.id),
+                        serde_json::json!({"source": "automated", "event_id": event.id}),
+                    )
+                    .await?;
+
+                let _ = state
+                    .recall_service
+                    .identify_affected_items(recall.id, &event.product_id, batch_id.as_deref())
+                    .await?;
+
+                let recipients = vec![event.actor_address.clone(), product.owner_address];
+                let payload = serde_json::json!({
+                    "recall_id": recall.id,
+                    "product_id": recall.product_id,
+                    "batch_id": recall.batch_id,
+                    "severity": recall.severity,
+                    "reason": recall.reason,
+                    "triggered_event_id": event.id
+                });
+
+                let _ = state
+                    .recall_service
+                    .queue_notifications(recall.id, recipients, "in_app", payload)
+                    .await?;
+            }
+        }
+    }
+
+    Ok(Json(EventResponse::from(event)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/events/{id}",
+    tag = "events",
+    params(
+        ("id" = i64, Path, description = "Event ID")
+    ),
+    responses(
+        (status = 200, description = "Event retrieved successfully", body = EventResponse),
+        (status = 404, description = "Event not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_event(
+    State(state): State<AppState>,
+    Path(id): Path<i64>,
+) -> Result<Json<EventResponse>, AppError> {
+    let event = state
+        .event_service
+        .get_event(id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Event {} not found", id)))?;
+
+    Ok(Json(EventResponse::from(event)))
+}
diff --git a/backend/src/handlers/financial.rs b/backend/src/handlers/financial.rs
new file mode 100644
index 00000000..c231612b
--- /dev/null
+++ b/backend/src/handlers/financial.rs
@@ -0,0 +1,187 @@
+use axum::{
+    extract::{Path, State, Json},
+    http::StatusCode,
+    response::IntoResponse,
+};
+use serde::{Deserialize, Serialize};
+use utoipa::ToSchema;
+use crate::AppState;
+use crate::validation::{validate_amount, validate_string, sanitize_input};
+use crate::middleware::auth::AuthContext;
+use crate::error::AppError;
+
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct CreateTransactionRequest {
+    pub transaction_type: String,
+    pub amount: String,
+    pub currency: String,
+}
+
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct CreateInvoiceRequest {
+    pub amount: String,
+    pub due_date: String,
+}
+
+#[derive(Debug, Serialize, Deserialize, ToSchema)]
+pub struct FinancingRequestBody {
+    pub financing_type: String,
+    pub amount: String,
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/transactions",
+    tag = "financial",
+    request_body = CreateTransactionRequest,
+    responses(
+        (status = 201, description = "Transaction created successfully"),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+/// Create a new financial transaction for the authenticated user.
+pub async fn create_transaction(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<AuthContext>,
+    Json(req): Json<CreateTransactionRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    validate_string("transaction_type", &req.transaction_type, 64)?;
+    validate_string("currency", &req.currency, 10)?;
+    validate_amount(&req.amount)?;
+
+    let user_id = auth.user_id.to_string();
+
+    let tx = state.financial_service.create_transaction(
+        &user_id,
+        &sanitize_input(&req.transaction_type),
+        &sanitize_input(&req.amount),
+        &sanitize_input(&req.currency),
+    ).await.map_err(AppError::DatabaseError)?;
+
+    Ok((StatusCode::CREATED, Json(tx)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/transactions/{id}",
+    tag = "financial",
+    params(
+        ("id" = String, Path, description = "Transaction ID")
+    ),
+    responses(
+        (status = 200, description = "Transaction retrieved successfully"),
+        (status = 404, description = "Transaction not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_transaction(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<impl IntoResponse, AppError> {
+    let tx = state.financial_service.get_transaction(&id).await
+        .map_err(|_| AppError::NotFound("Transaction not found".to_string()))?;
+    
+    Ok((StatusCode::OK, Json(tx)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/transactions",
+    tag = "financial",
+    responses(
+        (status = 200, description = "Transactions listed successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn list_transactions(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<AuthContext>,
+) -> Result<impl IntoResponse, AppError> {
+    let user_id = auth.user_id.to_string();
+
+    let txs = state.financial_service.list_user_transactions(&user_id).await
+        .map_err(AppError::DatabaseError)?;
+    
+    Ok((StatusCode::OK, Json(txs)))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/invoices",
+    tag = "financial",
+    request_body = CreateInvoiceRequest,
+    responses(
+        (status = 201, description = "Invoice created successfully"),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn create_invoice(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<AuthContext>,
+    Json(req): Json<CreateInvoiceRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    validate_amount(&req.amount)?;
+    validate_string("due_date", &req.due_date, 32)?;
+
+    let user_id = auth.user_id.to_string();
+
+    let invoice = state.financial_service.create_invoice(
+        &user_id, 
+        &sanitize_input(&req.amount), 
+        &sanitize_input(&req.due_date)
+    ).await.map_err(AppError::DatabaseError)?;
+
+    Ok((StatusCode::CREATED, Json(invoice)))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/financing/request",
+    tag = "financial",
+    request_body = FinancingRequestBody,
+    responses(
+        (status = 201, description = "Financing requested successfully"),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn request_financing(
+    State(state): State<AppState>,
+    axum::Extension(auth): axum::Extension<AuthContext>,
+    Json(req): Json<FinancingRequestBody>,
+) -> Result<impl IntoResponse, AppError> {
+    validate_string("financing_type", &req.financing_type, 64)?;
+    validate_amount(&req.amount)?;
+
+    let user_id = auth.user_id.to_string();
+
+    let financing = state.financial_service.request_financing(
+        &user_id, 
+        &sanitize_input(&req.financing_type), 
+        &sanitize_input(&req.amount)
+    ).await.map_err(AppError::DatabaseError)?;
+
+    Ok((StatusCode::CREATED, Json(financing)))
+}
diff --git a/backend/src/handlers/health.rs b/backend/src/handlers/health.rs
new file mode 100644
index 00000000..d0cdf484
--- /dev/null
+++ b/backend/src/handlers/health.rs
@@ -0,0 +1,40 @@
+use axum::{extract::State, response::Json};
+use serde_json::json;
+use utoipa::ToSchema;
+
+use crate::{AppState, error::AppError};
+
+#[utoipa::path(
+    get,
+    path = "/health",
+    tag = "health",
+    responses(
+        (status = 200, description = "Service is healthy")
+    )
+)]
+pub async fn health_check() -> Json<serde_json::Value> {
+    Json(json!({
+        "status": "healthy",
+        "timestamp": chrono::Utc::now(),
+        "service": "chainlogistics-backend"
+    }))
+}
+
+#[utoipa::path(
+    get,
+    path = "/health/db",
+    tag = "health",
+    responses(
+        (status = 200, description = "Database connection is healthy"),
+        (status = 503, description = "Database connection failed")
+    )
+)]
+pub async fn db_health_check(State(state): State<AppState>) -> Result<Json<serde_json::Value>, AppError> {
+    state.db.health_check().await?;
+    
+    Ok(Json(json!({
+        "status": "healthy",
+        "database": "connected",
+        "timestamp": chrono::Utc::now()
+    })))
+}
diff --git a/backend/src/handlers/iot.rs b/backend/src/handlers/iot.rs
new file mode 100644
index 00000000..ce934249
--- /dev/null
+++ b/backend/src/handlers/iot.rs
@@ -0,0 +1,269 @@
+use axum::{
+    extract::{Path, Query, State},
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+use crate::models::iot::*;
+use crate::services::IoTService;
+use crate::error::AppError;
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListDevicesQuery {
+    pub product_id: Option<String>,
+    pub device_type: Option<String>,
+    pub is_active: Option<bool>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct GetReadingsQuery {
+    pub device_id: Option<String>,
+    pub product_id: Option<String>,
+    pub start_time: Option<chrono::DateTime<chrono::Utc>>,
+    pub end_time: Option<chrono::DateTime<chrono::Utc>>,
+    pub limit: Option<i64>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct GetAlertsQuery {
+    pub product_id: Option<String>,
+    pub is_resolved: Option<bool>,
+    pub limit: Option<i64>,
+}
+
+// Create IoT device
+#[utoipa::path(
+    post,
+    path = "/api/iot/devices",
+    request_body = NewIoTDevice,
+    responses(
+        (status = 201, description = "Device created", body = IoTDevice),
+        (status = 400, description = "Invalid request")
+    ),
+    tag = "iot"
+)]
+pub async fn create_device(
+    State(service): State<Arc<IoTService>>,
+    Json(req): Json<NewIoTDevice>,
+) -> Result<Json<IoTDevice>, AppError> {
+    let device = service.create_device(req).await?;
+    Ok(Json(device))
+}
+
+// Get IoT device
+#[utoipa::path(
+    get,
+    path = "/api/iot/devices/{device_id}",
+    params(
+        ("device_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Device found", body = IoTDevice),
+        (status = 404, description = "Device not found")
+    ),
+    tag = "iot"
+)]
+pub async fn get_device(
+    State(service): State<Arc<IoTService>>,
+    Path(device_id): Path<String>,
+) -> Result<Json<IoTDevice>, AppError> {
+    let device = service.get_device(&device_id).await?
+        .ok_or_else(|| AppError::NotFound("Device not found".to_string()))?;
+    Ok(Json(device))
+}
+
+// List IoT devices
+#[utoipa::path(
+    get,
+    path = "/api/iot/devices",
+    params(ListDevicesQuery),
+    responses(
+        (status = 200, description = "List of devices", body = Vec<IoTDevice>)
+    ),
+    tag = "iot"
+)]
+pub async fn list_devices(
+    State(service): State<Arc<IoTService>>,
+    Query(query): Query<ListDevicesQuery>,
+) -> Result<Json<Vec<IoTDevice>>, AppError> {
+    let devices = service.list_devices(
+        query.product_id,
+        query.device_type,
+        query.is_active,
+    ).await?;
+    Ok(Json(devices))
+}
+
+// Create temperature reading
+#[utoipa::path(
+    post,
+    path = "/api/iot/readings",
+    request_body = NewTemperatureReading,
+    responses(
+        (status = 201, description = "Reading created", body = TemperatureReading)
+    ),
+    tag = "iot"
+)]
+pub async fn create_reading(
+    State(service): State<Arc<IoTService>>,
+    Json(req): Json<NewTemperatureReading>,
+) -> Result<Json<TemperatureReading>, AppError> {
+    let reading = service.create_reading(req).await?;
+    Ok(Json(reading))
+}
+
+// Get temperature readings
+#[utoipa::path(
+    get,
+    path = "/api/iot/readings",
+    params(GetReadingsQuery),
+    responses(
+        (status = 200, description = "List of readings", body = Vec<TemperatureReading>)
+    ),
+    tag = "iot"
+)]
+pub async fn get_readings(
+    State(service): State<Arc<IoTService>>,
+    Query(query): Query<GetReadingsQuery>,
+) -> Result<Json<Vec<TemperatureReading>>, AppError> {
+    let limit = query.limit.unwrap_or(100);
+    let readings = service.get_readings(
+        query.device_id,
+        query.product_id,
+        query.start_time,
+        query.end_time,
+        limit,
+    ).await?;
+    Ok(Json(readings))
+}
+
+// Create temperature threshold
+#[utoipa::path(
+    post,
+    path = "/api/iot/thresholds",
+    request_body = NewTemperatureThreshold,
+    responses(
+        (status = 201, description = "Threshold created", body = TemperatureThreshold)
+    ),
+    tag = "iot"
+)]
+pub async fn create_threshold(
+    State(service): State<Arc<IoTService>>,
+    Json(req): Json<NewTemperatureThreshold>,
+) -> Result<Json<TemperatureThreshold>, AppError> {
+    let threshold = service.create_threshold(req).await?;
+    Ok(Json(threshold))
+}
+
+// Get temperature thresholds
+#[utoipa::path(
+    get,
+    path = "/api/iot/thresholds/{product_id}",
+    params(
+        ("product_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "List of thresholds", body = Vec<TemperatureThreshold>)
+    ),
+    tag = "iot"
+)]
+pub async fn get_thresholds(
+    State(service): State<Arc<IoTService>>,
+    Path(product_id): Path<String>,
+) -> Result<Json<Vec<TemperatureThreshold>>, AppError> {
+    let thresholds = service.get_thresholds(&product_id).await?;
+    Ok(Json(thresholds))
+}
+
+// Get temperature alerts
+#[utoipa::path(
+    get,
+    path = "/api/iot/alerts",
+    params(GetAlertsQuery),
+    responses(
+        (status = 200, description = "List of alerts", body = Vec<TemperatureAlert>)
+    ),
+    tag = "iot"
+)]
+pub async fn get_alerts(
+    State(service): State<Arc<IoTService>>,
+    Query(query): Query<GetAlertsQuery>,
+) -> Result<Json<Vec<TemperatureAlert>>, AppError> {
+    let limit = query.limit.unwrap_or(50);
+    let alerts = service.get_alerts(
+        query.product_id,
+        query.is_resolved,
+        limit,
+    ).await?;
+    Ok(Json(alerts))
+}
+
+// Acknowledge alert
+#[utoipa::path(
+    post,
+    path = "/api/iot/alerts/{alert_id}/acknowledge",
+    params(
+        ("alert_id" = Uuid, Path)
+    ),
+    responses(
+        (status = 200, description = "Alert acknowledged", body = TemperatureAlert)
+    ),
+    tag = "iot"
+)]
+pub async fn acknowledge_alert(
+    State(service): State<Arc<IoTService>>,
+    Path(alert_id): Path<Uuid>,
+) -> Result<Json<TemperatureAlert>, AppError> {
+    let alert = service.acknowledge_alert(alert_id, "system".to_string()).await?;
+    Ok(Json(alert))
+}
+
+// Resolve alert
+#[utoipa::path(
+    post,
+    path = "/api/iot/alerts/{alert_id}/resolve",
+    params(
+        ("alert_id" = Uuid, Path)
+    ),
+    responses(
+        (status = 200, description = "Alert resolved", body = TemperatureAlert)
+    ),
+    tag = "iot"
+)]
+pub async fn resolve_alert(
+    State(service): State<Arc<IoTService>>,
+    Path(alert_id): Path<Uuid>,
+) -> Result<Json<TemperatureAlert>, AppError> {
+    let alert = service.resolve_alert(alert_id, "system".to_string()).await?;
+    Ok(Json(alert))
+}
+
+// Get temperature summaries
+#[utoipa::path(
+    get,
+    path = "/api/iot/summaries/{device_id}",
+    params(
+        ("device_id" = String, Path),
+        ("summary_period" = Option<String>, Query),
+        ("limit" = Option<i64>, Query)
+    ),
+    responses(
+        (status = 200, description = "List of summaries", body = Vec<TemperatureSummary>)
+    ),
+    tag = "iot"
+)]
+pub async fn get_summaries(
+    State(service): State<Arc<IoTService>>,
+    Path(device_id): Path<String>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<TemperatureSummary>>, AppError> {
+    let summary_period = params.get("summary_period").cloned();
+    let limit: i64 = params.get("limit")
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(50);
+    let summaries = service.get_summaries(&device_id, summary_period.as_deref(), limit).await?;
+    Ok(Json(summaries))
+}
diff --git a/backend/src/handlers/monitoring.rs b/backend/src/handlers/monitoring.rs
new file mode 100644
index 00000000..e9b45397
--- /dev/null
+++ b/backend/src/handlers/monitoring.rs
@@ -0,0 +1,173 @@
+use axum::{
+    extract::State,
+    http::StatusCode,
+    response::IntoResponse,
+    Json,
+};
+
+use crate::{AppState, error::AppError, middleware::auth::AuthContext};
+use crate::monitoring::{MonitoringSystem, PerformanceMonitor, InfrastructureMonitor};
+
+/// Get comprehensive monitoring dashboard
+/// 
+/// Returns error stats, performance metrics, infrastructure metrics, and health status.
+/// Requires auditor or admin authentication.
+pub async fn get_dashboard(
+    State(state): State<AppState>,
+    auth: AuthContext,
+) -> Result<impl IntoResponse, AppError> {
+    // Only auditors and admins can view dashboard
+    if !matches!(auth.role, crate::models::UserRole::Auditor | crate::models::UserRole::Administrator) {
+        return Err(AppError::Forbidden("Auditor or admin access required".to_string()));
+    }
+    
+    let monitoring_system = MonitoringSystem::new();
+    let dashboard = monitoring_system.get_dashboard().await;
+    
+    Ok(Json(dashboard))
+}
+
+/// Get error statistics
+/// 
+/// Returns current error metrics including error counts, rates, and top errors.
+/// Requires auditor or admin authentication.
+pub async fn get_error_stats(
+    State(state): State<AppState>,
+    auth: AuthContext,
+) -> Result<impl IntoResponse, AppError> {
+    // Only auditors and admins can view error stats
+    if !matches!(auth.role, crate::models::UserRole::Auditor | crate::models::UserRole::Administrator) {
+        return Err(AppError::Forbidden("Auditor or admin access required".to_string()));
+    }
+    
+    let stats = state.error_monitor.get_stats().await;
+    
+    Ok(Json(stats))
+}
+
+/// Get recent errors
+/// 
+/// Returns the most recent error events with correlation IDs for debugging.
+/// Requires auditor or admin authentication.
+pub async fn get_recent_errors(
+    State(state): State<AppState>,
+    auth: AuthContext,
+) -> Result<impl IntoResponse, AppError> {
+    // Only auditors and admins can view error details
+    if !matches!(auth.role, crate::models::UserRole::Auditor | crate::models::UserRole::Administrator) {
+        return Err(AppError::Forbidden("Auditor or admin access required".to_string()));
+    }
+    
+    let errors = state.error_monitor.get_recent_errors(50).await;
+    
+    Ok(Json(errors))
+}
+
+/// Get performance metrics
+/// 
+/// Returns request counts, response times, and percentiles by endpoint.
+/// Requires auditor or admin authentication.
+pub async fn get_performance_metrics(
+    State(state): State<AppState>,
+    auth: AuthContext,
+) -> Result<impl IntoResponse, AppError> {
+    // Only auditors and admins can view performance metrics
+    if !matches!(auth.role, crate::models::UserRole::Auditor | crate::models::UserRole::Administrator) {
+        return Err(AppError::Forbidden("Auditor or admin access required".to_string()));
+    }
+    
+    let perf_monitor = PerformanceMonitor::new();
+    let metrics = perf_monitor.get_metrics().await;
+    
+    Ok(Json(metrics))
+}
+
+/// Get infrastructure metrics
+/// 
+/// Returns database pool usage, Redis status, memory, CPU, and connection metrics.
+/// Requires auditor or admin authentication.
+pub async fn get_infrastructure_metrics(
+    State(state): State<AppState>,
+    auth: AuthContext,
+) -> Result<impl IntoResponse, AppError> {
+    // Only auditors and admins can view infrastructure metrics
+    if !matches!(auth.role, crate::models::UserRole::Auditor | crate::models::UserRole::Administrator) {
+        return Err(AppError::Forbidden("Auditor or admin access required".to_string()));
+    }
+    
+    let infra_monitor = InfrastructureMonitor::new();
+    let metrics = infra_monitor.get_metrics().await;
+    
+    Ok(Json(metrics))
+}
+
+/// Check and trigger alerts
+/// 
+/// Manually checks for alert conditions and triggers alerts if thresholds are exceeded.
+/// Requires auditor or admin authentication.
+pub async fn check_alerts(
+    State(state): State<AppState>,
+    auth: AuthContext,
+) -> Result<impl IntoResponse, AppError> {
+    // Only auditors and admins can trigger alert checks
+    if !matches!(auth.role, crate::models::UserRole::Auditor | crate::models::UserRole::Administrator) {
+        return Err(AppError::Forbidden("Auditor or admin access required".to_string()));
+    }
+    
+    let monitoring_system = MonitoringSystem::new();
+    monitoring_system.check_alerts().await;
+    
+    Ok(Json(serde_json::json!({
+        "status": "alert_check_completed",
+        "timestamp": chrono::Utc::now()
+    })))
+}
+
+/// Health check endpoint with error rate monitoring
+/// 
+/// Returns service health status including error rate.
+/// Returns 503 if error rate is too high.
+pub async fn health_check_with_errors(
+    State(state): State<AppState>,
+) -> Result<impl IntoResponse, AppError> {
+    let stats = state.error_monitor.get_stats().await;
+    
+    // Check if error rate is too high
+    let is_healthy = stats.error_rate < 50.0; // 50 errors per minute threshold
+    
+    let response = serde_json::json!({
+        "status": if is_healthy { "healthy" } else { "degraded" },
+        "error_rate": stats.error_rate,
+        "total_errors": stats.total_errors,
+    });
+    
+    if is_healthy {
+        Ok((StatusCode::OK, Json(response)))
+    } else {
+        Ok((StatusCode::SERVICE_UNAVAILABLE, Json(response)))
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::monitoring::ErrorMonitor;
+    use crate::error::ErrorCode;
+
+    #[tokio::test]
+    async fn test_health_check_healthy() {
+        let monitor = ErrorMonitor::new();
+        
+        // Record a few errors (below threshold)
+        for i in 0..5 {
+            monitor.record_error(
+                ErrorCode::ValidationFailed,
+                format!("test-{}", i),
+                None,
+            ).await;
+        }
+        
+        let stats = monitor.get_stats().await;
+        assert!(stats.error_rate < 50.0);
+    }
+}
diff --git a/backend/src/handlers/product.rs b/backend/src/handlers/product.rs
new file mode 100644
index 00000000..6a1123e7
--- /dev/null
+++ b/backend/src/handlers/product.rs
@@ -0,0 +1,385 @@
+use axum::{
+    extract::{State, Path, Query},
+    http::StatusCode,
+    response::Json,
+};
+use serde::{Deserialize, Serialize};
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+use crate::{
+    AppState,
+    error::AppError,
+    models::{Product, NewProduct, ProductFilters},
+    validation::{validate_string, sanitize_input, validate_stellar_address, validate_product_id, validate_location, sanitize_json_metadata},
+};
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListProductsQuery {
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+    #[serde(alias = "ownerAddress")]
+    pub owner_address: Option<String>,
+    pub category: Option<String>,
+    #[serde(alias = "isActive")]
+    pub is_active: Option<bool>,
+    pub search: Option<String>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct CreateProductRequest {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    #[serde(alias = "originLocation")]
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<String>,
+    #[serde(alias = "mediaHashes")]
+    pub media_hashes: Vec<String>,
+    #[serde(alias = "customFields")]
+    pub custom_fields: serde_json::Value,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct UpdateProductRequest {
+    pub name: Option<String>,
+    pub description: Option<String>,
+    #[serde(alias = "originLocation")]
+    pub origin_location: Option<String>,
+    pub category: Option<String>,
+    pub tags: Option<Vec<String>>,
+    pub certifications: Option<Vec<String>>,
+    #[serde(alias = "mediaHashes")]
+    pub media_hashes: Option<Vec<String>>,
+    #[serde(alias = "customFields")]
+    pub custom_fields: Option<serde_json::Value>,
+    #[serde(alias = "isActive")]
+    pub is_active: Option<bool>,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct ProductResponse {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<String>,
+    pub media_hashes: Vec<String>,
+    pub custom_fields: serde_json::Value,
+    pub owner_address: String,
+    pub is_active: bool,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+    pub updated_at: chrono::DateTime<chrono::Utc>,
+    pub created_by: String,
+    pub updated_by: String,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct PaginatedProductsResponse {
+    pub products: Vec<ProductResponse>,
+    pub total: i64,
+    pub offset: i64,
+    pub limit: i64,
+}
+
+impl From<Product> for ProductResponse {
+    fn from(product: Product) -> Self {
+        Self {
+            id: product.id,
+            name: product.name,
+            description: product.description,
+            origin_location: product.origin_location,
+            category: product.category,
+            tags: product.tags,
+            certifications: product.certifications,
+            media_hashes: product.media_hashes,
+            custom_fields: product.custom_fields,
+            owner_address: product.owner_address,
+            is_active: product.is_active,
+            created_at: product.created_at,
+            updated_at: product.updated_at,
+            created_by: product.created_by,
+            updated_by: product.updated_by,
+        }
+    }
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/products",
+    tag = "products",
+    params(ListProductsQuery),
+    responses(
+        (status = 200, description = "Products listed successfully", body = PaginatedProductsResponse),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn list_products(
+    State(state): State<AppState>,
+    Query(query): Query<ListProductsQuery>,
+) -> Result<Json<PaginatedProductsResponse>, AppError> {
+    let offset = query.offset.unwrap_or(0);
+    let limit = query.limit.unwrap_or(20).min(100); // Cap at 100
+
+    // Validate query parameters
+    if let Some(ref search) = query.search {
+        validate_string("search", search, 100)?;
+    }
+    if let Some(ref category) = query.category {
+        validate_string("category", category, 64)?;
+    }
+    if let Some(ref owner) = query.owner_address {
+        validate_stellar_address(owner)?;
+    }
+
+    let products = if let Some(search_query) = query.search {
+        state.product_service
+            .search_products(&sanitize_input(&search_query), limit)
+            .await?
+            .into_iter()
+            .map(ProductResponse::from)
+            .collect()
+    } else {
+        let filters = ProductFilters {
+            owner_address: query.owner_address.clone().map(|s| sanitize_input(&s)),
+            category: query.category.clone().map(|s| sanitize_input(&s)),
+            is_active: query.is_active,
+            created_after: None,
+            created_before: None,
+        };
+
+        state.product_service
+            .list_products(offset, limit, Some(filters))
+            .await?
+            .into_iter()
+            .map(ProductResponse::from)
+            .collect()
+    };
+
+    let total = if query.search.is_some() {
+        products.len() as i64
+    } else {
+        let filters = ProductFilters {
+            owner_address: query.owner_address.map(|s| sanitize_input(&s)),
+            category: query.category.map(|s| sanitize_input(&s)),
+            is_active: query.is_active,
+            created_after: None,
+            created_before: None,
+        };
+        state.product_service
+            .count_products(Some(filters))
+            .await?
+    };
+
+    Ok(Json(PaginatedProductsResponse {
+        products,
+        total,
+        offset,
+        limit,
+    }))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/products",
+    tag = "products",
+    request_body = CreateProductRequest,
+    responses(
+        (status = 201, description = "Product created successfully", body = ProductResponse),
+        (status = 400, description = "Bad request"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn create_product(
+    State(state): State<AppState>,
+    Json(request): Json<CreateProductRequest>,
+) -> Result<Json<ProductResponse>, AppError> {
+    // Validate inputs
+    validate_product_id(&request.id)?;
+    validate_string("name", &request.name, 128)?;
+    validate_string("category", &request.category, 64)?;
+    validate_location(&request.origin_location)?;
+    if request.description.len() > 2048 {
+        return Err(AppError::Validation("description must not exceed 2048 characters".to_string()));
+    }
+
+    // Get auth context
+    let auth_context = crate::middleware::auth::get_auth_context(&axum::extract::Request::builder().uri("/").body(()).unwrap())?;
+
+    let new_product = NewProduct {
+        id: sanitize_input(&request.id),
+        name: sanitize_input(&request.name),
+        description: sanitize_input(&request.description),
+        origin_location: sanitize_input(&request.origin_location),
+        category: sanitize_input(&request.category),
+        tags: request.tags.iter().map(|t| sanitize_input(t)).collect(),
+        certifications: request.certifications.iter().map(|c| sanitize_input(c)).collect(),
+        media_hashes: request.media_hashes.iter().map(|m| sanitize_input(m)).collect(),
+        custom_fields: {
+            let mut fields = request.custom_fields;
+            sanitize_json_metadata(&mut fields);
+            fields
+        },
+        owner_address: auth_context.stellar_address.clone().unwrap_or_default(),
+        created_by: auth_context.user_id.to_string(),
+    };
+
+    let product = state.product_service.create_product(new_product).await?;
+    Ok(Json(ProductResponse::from(product)))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/products/{id}",
+    tag = "products",
+    params(
+        ("id" = String, Path, description = "Product ID")
+    ),
+    responses(
+        (status = 200, description = "Product retrieved successfully", body = ProductResponse),
+        (status = 404, description = "Product not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<ProductResponse>, AppError> {
+    validate_product_id(&id)?;
+    let product = state
+        .product_service
+        .get_product(&id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Product {} not found", id)))?;
+
+    Ok(Json(ProductResponse::from(product)))
+}
+
+#[utoipa::path(
+    put,
+    path = "/api/v1/admin/products/{id}",
+    tag = "products",
+    params(
+        ("id" = String, Path, description = "Product ID")
+    ),
+    request_body = UpdateProductRequest,
+    responses(
+        (status = 200, description = "Product updated successfully", body = ProductResponse),
+        (status = 404, description = "Product not found"),
+        (status = 400, description = "Bad request"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn update_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+    Json(request): Json<UpdateProductRequest>,
+) -> Result<Json<ProductResponse>, AppError> {
+    let auth_context = crate::middleware::auth::get_auth_context(&axum::extract::Request::builder().uri("/").body(()).unwrap())?;
+    
+    validate_product_id(&id)?;
+
+    let mut product = state
+        .product_service
+        .get_product(&id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Product {} not found", id)))?;
+
+    // Update fields if provided with validation
+    if let Some(name) = request.name {
+        validate_string("name", &name, 128)?;
+        product.name = sanitize_input(&name);
+    }
+    if let Some(description) = request.description {
+        if description.len() > 2048 {
+            return Err(AppError::Validation("description must not exceed 2048 characters".to_string()));
+        }
+        product.description = sanitize_input(&description);
+    }
+    if let Some(origin_location) = request.origin_location {
+        validate_location(&origin_location)?;
+        product.origin_location = sanitize_input(&origin_location);
+    }
+    if let Some(category) = request.category {
+        validate_string("category", &category, 64)?;
+        product.category = sanitize_input(&category);
+    }
+    if let Some(tags) = request.tags {
+        product.tags = tags.iter().map(|t| sanitize_input(t)).collect();
+    }
+    if let Some(certifications) = request.certifications {
+        product.certifications = certifications.iter().map(|c| sanitize_input(c)).collect();
+    }
+    if let Some(media_hashes) = request.media_hashes {
+        product.media_hashes = media_hashes.iter().map(|m| sanitize_input(m)).collect();
+    }
+    if let Some(mut custom_fields) = request.custom_fields {
+        sanitize_json_metadata(&mut custom_fields);
+        product.custom_fields = custom_fields;
+    }
+    if let Some(is_active) = request.is_active {
+        product.is_active = is_active;
+    }
+
+    product.updated_by = auth_context.user_id.to_string();
+
+    let updated = state.product_service.update_product(&id, product).await?;
+    Ok(Json(ProductResponse::from(updated)))
+}
+
+#[utoipa::path(
+    delete,
+    path = "/api/v1/admin/products/{id}",
+    tag = "products",
+    params(
+        ("id" = String, Path, description = "Product ID")
+    ),
+    responses(
+        (status = 204, description = "Product deleted successfully"),
+        (status = 404, description = "Product not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn delete_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<StatusCode, AppError> {
+    validate_product_id(&id)?;
+
+    // Check if product exists
+    state
+        .product_service
+        .get_product(&id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Product {} not found", id)))?;
+
+    state.product_service.delete_product(&id).await?;
+    Ok(StatusCode::NO_CONTENT)
+}
diff --git a/backend/src/handlers/quality.rs b/backend/src/handlers/quality.rs
new file mode 100644
index 00000000..ecaab302
--- /dev/null
+++ b/backend/src/handlers/quality.rs
@@ -0,0 +1,423 @@
+use axum::{
+    extract::{Path, Query, State},
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+use crate::models::quality::*;
+use crate::services::QualityService;
+use crate::error::AppError;
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListCheckpointsQuery {
+    pub checkpoint_type: Option<String>,
+    pub category: Option<String>,
+    pub is_active: Option<bool>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListInspectionsQuery {
+    pub product_id: Option<String>,
+    pub checkpoint_id: Option<String>,
+    pub status: Option<String>,
+    pub limit: Option<i64>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListNonConformancesQuery {
+    pub product_id: Option<String>,
+    pub severity: Option<String>,
+    pub status: Option<String>,
+    pub limit: Option<i64>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListMetricsQuery {
+    pub product_id: Option<String>,
+    pub metric_type: Option<String>,
+    pub limit: Option<i64>,
+}
+
+// Create QC checkpoint
+#[utoipa::path(
+    post,
+    path = "/api/quality/checkpoints",
+    request_body = NewQCCheckpoint,
+    responses(
+        (status = 201, description = "Checkpoint created", body = QCCheckpoint)
+    ),
+    tag = "quality"
+)]
+pub async fn create_checkpoint(
+    State(service): State<Arc<QualityService>>,
+    Json(req): Json<NewQCCheckpoint>,
+) -> Result<Json<QCCheckpoint>, AppError> {
+    let checkpoint = service.create_checkpoint(req).await?;
+    Ok(Json(checkpoint))
+}
+
+// Get QC checkpoint
+#[utoipa::path(
+    get,
+    path = "/api/quality/checkpoints/{checkpoint_id}",
+    params(
+        ("checkpoint_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Checkpoint found", body = QCCheckpoint),
+        (status = 404, description = "Checkpoint not found")
+    ),
+    tag = "quality"
+)]
+pub async fn get_checkpoint(
+    State(service): State<Arc<QualityService>>,
+    Path(checkpoint_id): Path<String>,
+) -> Result<Json<QCCheckpoint>, AppError> {
+    let checkpoint = service.get_checkpoint(&checkpoint_id).await?
+        .ok_or_else(|| AppError::NotFound("Checkpoint not found".to_string()))?;
+    Ok(Json(checkpoint))
+}
+
+// List QC checkpoints
+#[utoipa::path(
+    get,
+    path = "/api/quality/checkpoints",
+    params(ListCheckpointsQuery),
+    responses(
+        (status = 200, description = "List of checkpoints", body = Vec<QCCheckpoint>)
+    ),
+    tag = "quality"
+)]
+pub async fn list_checkpoints(
+    State(service): State<Arc<QualityService>>,
+    Query(query): Query<ListCheckpointsQuery>,
+) -> Result<Json<Vec<QCCheckpoint>>, AppError> {
+    let checkpoints = service.list_checkpoints(
+        query.checkpoint_type,
+        query.category,
+        query.is_active,
+    ).await?;
+    Ok(Json(checkpoints))
+}
+
+// Create QC workflow
+#[utoipa::path(
+    post,
+    path = "/api/quality/workflows",
+    request_body = NewQCWorkflow,
+    responses(
+        (status = 201, description = "Workflow created", body = QCWorkflow)
+    ),
+    tag = "quality"
+)]
+pub async fn create_workflow(
+    State(service): State<Arc<QualityService>>,
+    Json(req): Json<NewQCWorkflow>,
+) -> Result<Json<QCWorkflow>, AppError> {
+    let workflow = service.create_workflow(req).await?;
+    Ok(Json(workflow))
+}
+
+// Get QC workflow
+#[utoipa::path(
+    get,
+    path = "/api/quality/workflows/{workflow_id}",
+    params(
+        ("workflow_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Workflow found", body = QCWorkflow),
+        (status = 404, description = "Workflow not found")
+    ),
+    tag = "quality"
+)]
+pub async fn get_workflow(
+    State(service): State<Arc<QualityService>>,
+    Path(workflow_id): Path<String>,
+) -> Result<Json<QCWorkflow>, AppError> {
+    let workflow = service.get_workflow(&workflow_id).await?
+        .ok_or_else(|| AppError::NotFound("Workflow not found".to_string()))?;
+    Ok(Json(workflow))
+}
+
+// List QC workflows
+#[utoipa::path(
+    get,
+    path = "/api/quality/workflows",
+    params(
+        ("is_active" = Option<bool>, Query)
+    ),
+    responses(
+        (status = 200, description = "List of workflows", body = Vec<QCWorkflow>)
+    ),
+    tag = "quality"
+)]
+pub async fn list_workflows(
+    State(service): State<Arc<QualityService>>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<QCWorkflow>>, AppError> {
+    let is_active = params.get("is_active")
+        .and_then(|s| s.parse().ok());
+    let workflows = service.list_workflows(is_active).await?;
+    Ok(Json(workflows))
+}
+
+// Create QC inspection
+#[utoipa::path(
+    post,
+    path = "/api/quality/inspections",
+    request_body = NewQCInspection,
+    responses(
+        (status = 201, description = "Inspection created", body = QCInspection)
+    ),
+    tag = "quality"
+)]
+pub async fn create_inspection(
+    State(service): State<Arc<QualityService>>,
+    Json(req): Json<NewQCInspection>,
+) -> Result<Json<QCInspection>, AppError> {
+    let inspection = service.create_inspection(req).await?;
+    Ok(Json(inspection))
+}
+
+// Update inspection status
+#[utoipa::path(
+    put,
+    path = "/api/quality/inspections/{inspection_id}/status",
+    params(
+        ("inspection_id" = String, Path)
+    ),
+    request_body = serde_json::Value,
+    responses(
+        (status = 200, description = "Inspection updated", body = QCInspection)
+    ),
+    tag = "quality"
+)]
+pub async fn update_inspection_status(
+    State(service): State<Arc<QualityService>>,
+    Path(inspection_id): Path<String>,
+    Json(body): Json<serde_json::Value>,
+) -> Result<Json<QCInspection>, AppError> {
+    let status = body.get("status")
+        .and_then(|v| v.as_str())
+        .ok_or_else(|| AppError::BadRequest("status required".to_string()))?
+        .to_string();
+    let is_passed = body.get("is_passed")
+        .and_then(|v| v.as_bool());
+    let failure_reason = body.get("failure_reason")
+        .and_then(|v| v.as_str())
+        .map(|s| s.to_string());
+    
+    let inspection = service.update_inspection_status(&inspection_id, status, is_passed, failure_reason).await?;
+    Ok(Json(inspection))
+}
+
+// Get QC inspection
+#[utoipa::path(
+    get,
+    path = "/api/quality/inspections/{inspection_id}",
+    params(
+        ("inspection_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Inspection found", body = QCInspection),
+        (status = 404, description = "Inspection not found")
+    ),
+    tag = "quality"
+)]
+pub async fn get_inspection(
+    State(service): State<Arc<QualityService>>,
+    Path(inspection_id): Path<String>,
+) -> Result<Json<QCInspection>, AppError> {
+    let inspection = service.get_inspection(&inspection_id).await?
+        .ok_or_else(|| AppError::NotFound("Inspection not found".to_string()))?;
+    Ok(Json(inspection))
+}
+
+// List QC inspections
+#[utoipa::path(
+    get,
+    path = "/api/quality/inspections",
+    params(ListInspectionsQuery),
+    responses(
+        (status = 200, description = "List of inspections", body = Vec<QCInspection>)
+    ),
+    tag = "quality"
+)]
+pub async fn list_inspections(
+    State(service): State<Arc<QualityService>>,
+    Query(query): Query<ListInspectionsQuery>,
+) -> Result<Json<Vec<QCInspection>>, AppError> {
+    let limit = query.limit.unwrap_or(100);
+    let inspections = service.list_inspections(
+        query.product_id,
+        query.checkpoint_id,
+        query.status,
+        limit,
+    ).await?;
+    Ok(Json(inspections))
+}
+
+// Execute workflow
+#[utoipa::path(
+    post,
+    path = "/api/quality/workflows/execute",
+    request_body = WorkflowExecutionRequest,
+    responses(
+        (status = 200, description = "Workflow executed", body = WorkflowExecutionResult)
+    ),
+    tag = "quality"
+)]
+pub async fn execute_workflow(
+    State(service): State<Arc<QualityService>>,
+    Json(req): Json<WorkflowExecutionRequest>,
+) -> Result<Json<WorkflowExecutionResult>, AppError> {
+    let result = service.execute_workflow(req).await?;
+    Ok(Json(result))
+}
+
+// Create non-conformance
+#[utoipa::path(
+    post,
+    path = "/api/quality/non-conformances",
+    request_body = NewNonConformance,
+    responses(
+        (status = 201, description = "Non-conformance created", body = NonConformance)
+    ),
+    tag = "quality"
+)]
+pub async fn create_non_conformance(
+    State(service): State<Arc<QualityService>>,
+    Json(req): Json<NewNonConformance>,
+) -> Result<Json<NonConformance>, AppError> {
+    let nc = service.create_non_conformance(req).await?;
+    Ok(Json(nc))
+}
+
+// Update non-conformance
+#[utoipa::path(
+    put,
+    path = "/api/quality/non-conformances/{nc_id}",
+    params(
+        ("nc_id" = String, Path)
+    ),
+    request_body = serde_json::Value,
+    responses(
+        (status = 200, description = "Non-conformance updated", body = NonConformance)
+    ),
+    tag = "quality"
+)]
+pub async fn update_non_conformance(
+    State(service): State<Arc<QualityService>>,
+    Path(nc_id): Path<String>,
+    Json(body): Json<serde_json::Value>,
+) -> Result<Json<NonConformance>, AppError> {
+    let correction_action = body.get("correction_action")
+        .and_then(|v| v.as_str())
+        .map(|s| s.to_string());
+    let correction_status = body.get("correction_status")
+        .and_then(|v| v.as_str())
+        .ok_or_else(|| AppError::BadRequest("correction_status required".to_string()))?
+        .to_string();
+    let responsible_party = body.get("responsible_party")
+        .and_then(|v| v.as_str())
+        .map(|s| s.to_string());
+    
+    let nc = service.update_non_conformance(&nc_id, correction_action, correction_status, responsible_party).await?;
+    Ok(Json(nc))
+}
+
+// Verify non-conformance
+#[utoipa::path(
+    post,
+    path = "/api/quality/non-conformances/{nc_id}/verify",
+    params(
+        ("nc_id" = String, Path)
+    ),
+    request_body = serde_json::Value,
+    responses(
+        (status = 200, description = "Non-conformance verified", body = NonConformance)
+    ),
+    tag = "quality"
+)]
+pub async fn verify_non_conformance(
+    State(service): State<Arc<QualityService>>,
+    Path(nc_id): Path<String>,
+    Json(body): Json<serde_json::Value>,
+) -> Result<Json<NonConformance>, AppError> {
+    let verified_by = body.get("verified_by")
+        .and_then(|v| v.as_str())
+        .ok_or_else(|| AppError::BadRequest("verified_by required".to_string()))?
+        .to_string();
+    
+    let nc = service.verify_non_conformance(&nc_id, verified_by).await?;
+    Ok(Json(nc))
+}
+
+// List non-conformances
+#[utoipa::path(
+    get,
+    path = "/api/quality/non-conformances",
+    params(ListNonConformancesQuery),
+    responses(
+        (status = 200, description = "List of non-conformances", body = Vec<NonConformance>)
+    ),
+    tag = "quality"
+)]
+pub async fn list_non_conformances(
+    State(service): State<Arc<QualityService>>,
+    Query(query): Query<ListNonConformancesQuery>,
+) -> Result<Json<Vec<NonConformance>>, AppError> {
+    let limit = query.limit.unwrap_or(50);
+    let ncs = service.get_non_conformances(
+        query.product_id,
+        query.severity,
+        query.status,
+        limit,
+    ).await?;
+    Ok(Json(ncs))
+}
+
+// Create quality metric
+#[utoipa::path(
+    post,
+    path = "/api/quality/metrics",
+    request_body = NewQualityMetric,
+    responses(
+        (status = 201, description = "Metric created", body = QualityMetric)
+    ),
+    tag = "quality"
+)]
+pub async fn create_metric(
+    State(service): State<Arc<QualityService>>,
+    Json(req): Json<NewQualityMetric>,
+) -> Result<Json<QualityMetric>, AppError> {
+    let metric = service.create_metric(req).await?;
+    Ok(Json(metric))
+}
+
+// List quality metrics
+#[utoipa::path(
+    get,
+    path = "/api/quality/metrics",
+    params(ListMetricsQuery),
+    responses(
+        (status = 200, description = "List of metrics", body = Vec<QualityMetric>)
+    ),
+    tag = "quality"
+)]
+pub async fn list_metrics(
+    State(service): State<Arc<QualityService>>,
+    Query(query): Query<ListMetricsQuery>,
+) -> Result<Json<Vec<QualityMetric>>, AppError> {
+    let limit = query.limit.unwrap_or(50);
+    let metrics = service.get_metrics(
+        query.product_id,
+        query.metric_type,
+        limit,
+    ).await?;
+    Ok(Json(metrics))
+}
diff --git a/backend/src/handlers/recall.rs b/backend/src/handlers/recall.rs
new file mode 100644
index 00000000..6c61ef61
--- /dev/null
+++ b/backend/src/handlers/recall.rs
@@ -0,0 +1,330 @@
+use axum::{
+    extract::{Path, Query, State, Json},
+    http::StatusCode,
+    response::IntoResponse,
+};
+use serde::{Deserialize, Serialize};
+use utoipa::ToSchema;
+
+use crate::{
+    AppState,
+    error::AppError,
+    models::{Recall, RecallAffectedItem, RecallEffectiveness, RecallNotification},
+    validation::{sanitize_input, validate_product_id, validate_string, validate_uuid},
+};
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListRecallsQuery {
+    #[serde(alias = "productId")]
+    pub product_id: String,
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct CreateRecallRequest {
+    #[serde(alias = "productId")]
+    pub product_id: String,
+    #[serde(alias = "batchId")]
+    pub batch_id: Option<String>,
+    pub title: String,
+    pub reason: String,
+    pub severity: Option<String>,
+    #[serde(alias = "triggerType")]
+    pub trigger_type: Option<String>,
+    #[serde(default)]
+    pub metadata: serde_json::Value,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct NotifyRecallRequest {
+    pub recipients: Vec<String>,
+    pub channel: Option<String>,
+    #[serde(default)]
+    pub payload: serde_json::Value,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct UpdateEffectivenessRequest {
+    pub acknowledged_delta: Option<i32>,
+    pub recovered_delta: Option<i32>,
+    pub disposed_delta: Option<i32>,
+}
+
+#[derive(Debug, Serialize, ToSchema)]
+pub struct RecallWithEffectiveness {
+    pub recall: Recall,
+    pub effectiveness: Option<RecallEffectiveness>,
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/recalls",
+    tag = "recalls",
+    params(ListRecallsQuery),
+    responses(
+        (status = 200, description = "Recalls listed successfully", body = [Recall]),
+        (status = 400, description = "Bad request"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn list_recalls(
+    State(state): State<AppState>,
+    Query(query): Query<ListRecallsQuery>,
+) -> Result<Json<Vec<Recall>>, AppError> {
+    validate_product_id(&query.product_id)?;
+    let limit = query.limit.unwrap_or(20).min(100);
+    let offset = query.offset.unwrap_or(0);
+
+    let recalls = state
+        .recall_service
+        .list_recalls_by_product(&sanitize_input(&query.product_id), limit, offset)
+        .await?;
+
+    Ok(Json(recalls))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/recalls/{id}",
+    tag = "recalls",
+    params(
+        ("id" = String, Path, description = "Recall ID")
+    ),
+    responses(
+        (status = 200, description = "Recall retrieved successfully", body = RecallWithEffectiveness),
+        (status = 404, description = "Recall not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_recall(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<RecallWithEffectiveness>, AppError> {
+    validate_uuid(&id)?;
+    let recall_id = uuid::Uuid::parse_str(&id)?;
+
+    let recall = state
+        .recall_service
+        .get_recall(recall_id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Recall {} not found", id)))?;
+
+    let effectiveness = state.recall_service.get_effectiveness(recall_id).await?;
+
+    Ok(Json(RecallWithEffectiveness { recall, effectiveness }))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/recalls",
+    tag = "recalls",
+    request_body = CreateRecallRequest,
+    responses(
+        (status = 201, description = "Recall created successfully", body = RecallWithEffectiveness),
+        (status = 400, description = "Bad request - invalid input"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn create_recall(
+    State(state): State<AppState>,
+    Json(request): Json<CreateRecallRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    validate_product_id(&request.product_id)?;
+    validate_string("title", &request.title, 128)?;
+    validate_string("reason", &request.reason, 512)?;
+
+    if let Some(batch_id) = &request.batch_id {
+        validate_string("batch_id", batch_id, 128)?;
+    }
+
+    let severity = request.severity.unwrap_or_else(|| "medium".to_string());
+    let trigger_type = request.trigger_type.unwrap_or_else(|| "manual".to_string());
+
+    let recall = state
+        .recall_service
+        .create_recall(
+            &sanitize_input(&request.product_id),
+            request.batch_id.as_deref(),
+            &sanitize_input(&request.title),
+            &sanitize_input(&request.reason),
+            &sanitize_input(&severity),
+            &sanitize_input(&trigger_type),
+            None,
+            None,
+            request.metadata,
+        )
+        .await?;
+
+    let _ = state
+        .recall_service
+        .identify_affected_items(recall.id, &request.product_id, request.batch_id.as_deref())
+        .await?;
+
+    let effectiveness = state.recall_service.get_effectiveness(recall.id).await?;
+
+    Ok((StatusCode::CREATED, Json(RecallWithEffectiveness { recall, effectiveness })))
+}
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/recalls/{id}/affected",
+    tag = "recalls",
+    params(
+        ("id" = String, Path, description = "Recall ID")
+    ),
+    responses(
+        (status = 200, description = "Affected items listed successfully", body = [RecallAffectedItem]),
+        (status = 404, description = "Recall not found"),
+        (status = 401, description = "Unauthorized")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn list_affected_items(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<Vec<RecallAffectedItem>>, AppError> {
+    validate_uuid(&id)?;
+    let recall_id = uuid::Uuid::parse_str(&id)?;
+
+    state
+        .recall_service
+        .get_recall(recall_id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Recall {} not found", id)))?;
+
+    let items = sqlx::query_as!(
+        RecallAffectedItem,
+        r#"
+        SELECT
+            id,
+            recall_id,
+            product_id,
+            batch_id,
+            stakeholder_role,
+            stakeholder_address,
+            detected_via,
+            created_at
+        FROM recall_affected_items
+        WHERE recall_id = $1
+        ORDER BY created_at ASC
+        "#,
+        recall_id
+    )
+    .fetch_all(state.db.pool())
+    .await?;
+
+    Ok(Json(items))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/recalls/{id}/notify",
+    tag = "recalls",
+    params(
+        ("id" = String, Path, description = "Recall ID")
+    ),
+    request_body = NotifyRecallRequest,
+    responses(
+        (status = 200, description = "Notifications queued", body = [RecallNotification]),
+        (status = 400, description = "Bad request"),
+        (status = 404, description = "Recall not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn notify_recall(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+    Json(request): Json<NotifyRecallRequest>,
+) -> Result<Json<Vec<RecallNotification>>, AppError> {
+    validate_uuid(&id)?;
+    let recall_id = uuid::Uuid::parse_str(&id)?;
+
+    state
+        .recall_service
+        .get_recall(recall_id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Recall {} not found", id)))?;
+
+    if request.recipients.is_empty() {
+        return Err(AppError::Validation("recipients must not be empty".to_string()));
+    }
+
+    let channel = request.channel.unwrap_or_else(|| "in_app".to_string());
+    let recipients = request
+        .recipients
+        .into_iter()
+        .map(|r| sanitize_input(&r))
+        .collect::<Vec<_>>();
+
+    let notifications = state
+        .recall_service
+        .queue_notifications(recall_id, recipients, &sanitize_input(&channel), request.payload)
+        .await?;
+
+    Ok(Json(notifications))
+}
+
+#[utoipa::path(
+    post,
+    path = "/api/v1/admin/recalls/{id}/effectiveness",
+    tag = "recalls",
+    params(
+        ("id" = String, Path, description = "Recall ID")
+    ),
+    request_body = UpdateEffectivenessRequest,
+    responses(
+        (status = 200, description = "Effectiveness updated", body = RecallEffectiveness),
+        (status = 404, description = "Recall not found"),
+        (status = 401, description = "Unauthorized"),
+        (status = 403, description = "Forbidden")
+    ),
+    security(
+        ("jwt" = [])
+    )
+)]
+pub async fn update_effectiveness(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+    Json(request): Json<UpdateEffectivenessRequest>,
+) -> Result<Json<RecallEffectiveness>, AppError> {
+    validate_uuid(&id)?;
+    let recall_id = uuid::Uuid::parse_str(&id)?;
+
+    state
+        .recall_service
+        .get_recall(recall_id)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Recall {} not found", id)))?;
+
+    let eff = state
+        .recall_service
+        .update_effectiveness(
+            recall_id,
+            request.acknowledged_delta.unwrap_or(0),
+            request.recovered_delta.unwrap_or(0),
+            request.disposed_delta.unwrap_or(0),
+        )
+        .await?;
+
+    Ok(Json(eff))
+}
diff --git a/backend/src/handlers/regulatory.rs b/backend/src/handlers/regulatory.rs
new file mode 100644
index 00000000..810757d1
--- /dev/null
+++ b/backend/src/handlers/regulatory.rs
@@ -0,0 +1,298 @@
+use axum::{
+    extract::{Path, Query, State},
+    http::StatusCode,
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+use crate::models::regulatory::*;
+use crate::services::RegulatoryService;
+use crate::error::AppError;
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListRequirementsQuery {
+    pub regulation_type: Option<String>,
+    pub category: Option<String>,
+    pub is_active: Option<bool>,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct RunComplianceCheckRequest {
+    pub product_id: String,
+    pub requirement_ids: Option<Vec<String>>,
+    pub performed_by: String,
+}
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct GenerateReportRequest {
+    pub report_type: String,
+    pub scope: serde_json::Value,
+    pub period_start: Option<chrono::DateTime<chrono::Utc>>,
+    pub period_end: Option<chrono::DateTime<chrono::Utc>>,
+}
+
+// Create regulatory requirement
+#[utoipa::path(
+    post,
+    path = "/api/regulatory/requirements",
+    request_body = NewRegulatoryRequirement,
+    responses(
+        (status = 201, description = "Requirement created successfully", body = RegulatoryRequirement),
+        (status = 400, description = "Invalid request"),
+        (status = 500, description = "Internal server error")
+    ),
+    tag = "regulatory"
+)]
+pub async fn create_requirement(
+    State(service): State<Arc<RegulatoryService>>,
+    Json(req): Json<NewRegulatoryRequirement>,
+) -> Result<Json<RegulatoryRequirement>, AppError> {
+    let requirement = service.create_requirement(req).await?;
+    Ok(Json(requirement))
+}
+
+// Get regulatory requirement
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/requirements/{requirement_id}",
+    params(
+        ("requirement_id" = String, Path, description = "Requirement ID")
+    ),
+    responses(
+        (status = 200, description = "Requirement found", body = RegulatoryRequirement),
+        (status = 404, description = "Requirement not found")
+    ),
+    tag = "regulatory"
+)]
+pub async fn get_requirement(
+    State(service): State<Arc<RegulatoryService>>,
+    Path(requirement_id): Path<String>,
+) -> Result<Json<RegulatoryRequirement>, AppError> {
+    let requirement = service.get_requirement(&requirement_id).await?
+        .ok_or_else(|| AppError::NotFound("Requirement not found".to_string()))?;
+    Ok(Json(requirement))
+}
+
+// List regulatory requirements
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/requirements",
+    params(ListRequirementsQuery),
+    responses(
+        (status = 200, description = "List of requirements", body = Vec<RegulatoryRequirement>)
+    ),
+    tag = "regulatory"
+)]
+pub async fn list_requirements(
+    State(service): State<Arc<RegulatoryService>>,
+    Query(query): Query<ListRequirementsQuery>,
+) -> Result<Json<Vec<RegulatoryRequirement>>, AppError> {
+    let requirements = service.list_requirements(
+        query.regulation_type,
+        query.category,
+        query.is_active,
+    ).await?;
+    Ok(Json(requirements))
+}
+
+// Update regulatory requirement
+#[utoipa::path(
+    put,
+    path = "/api/regulatory/requirements/{requirement_id}",
+    request_body = NewRegulatoryRequirement,
+    responses(
+        (status = 200, description = "Requirement updated", body = RegulatoryRequirement),
+        (status = 404, description = "Requirement not found")
+    ),
+    tag = "regulatory"
+)]
+pub async fn update_requirement(
+    State(service): State<Arc<RegulatoryService>>,
+    Path(requirement_id): Path<String>,
+    Json(req): Json<NewRegulatoryRequirement>,
+) -> Result<Json<RegulatoryRequirement>, AppError> {
+    let requirement = service.update_requirement(&requirement_id, req).await?;
+    Ok(Json(requirement))
+}
+
+// Create product compliance record
+#[utoipa::path(
+    post,
+    path = "/api/regulatory/compliance",
+    request_body = NewProductCompliance,
+    responses(
+        (status = 201, description = "Compliance record created", body = ProductCompliance)
+    ),
+    tag = "regulatory"
+)]
+pub async fn create_product_compliance(
+    State(service): State<Arc<RegulatoryService>>,
+    Json(req): Json<NewProductCompliance>,
+) -> Result<Json<ProductCompliance>, AppError> {
+    let compliance = service.create_product_compliance(req).await?;
+    Ok(Json(compliance))
+}
+
+// Get product compliance
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/compliance/{product_id}/{requirement_id}",
+    params(
+        ("product_id" = String, Path),
+        ("requirement_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Compliance record found", body = ProductCompliance),
+        (status = 404, description = "Compliance record not found")
+    ),
+    tag = "regulatory"
+)]
+pub async fn get_product_compliance(
+    State(service): State<Arc<RegulatoryService>>,
+    Path((product_id, requirement_id)): Path<(String, String)>,
+) -> Result<Json<ProductCompliance>, AppError> {
+    let compliance = service.get_product_compliance(&product_id, &requirement_id).await?
+        .ok_or_else(|| AppError::NotFound("Compliance record not found".to_string()))?;
+    Ok(Json(compliance))
+}
+
+// List product compliance
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/compliance/{product_id}",
+    params(
+        ("product_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "List of compliance records", body = Vec<ProductCompliance>)
+    ),
+    tag = "regulatory"
+)]
+pub async fn list_product_compliance(
+    State(service): State<Arc<RegulatoryService>>,
+    Path(product_id): Path<String>,
+) -> Result<Json<Vec<ProductCompliance>>, AppError> {
+    let compliance = service.list_product_compliance(&product_id).await?;
+    Ok(Json(compliance))
+}
+
+// Run automated compliance check
+#[utoipa::path(
+    post,
+    path = "/api/regulatory/check",
+    request_body = RunComplianceCheckRequest,
+    responses(
+        (status = 200, description = "Compliance check completed", body = ComplianceCheckResult)
+    ),
+    tag = "regulatory"
+)]
+pub async fn run_compliance_check(
+    State(service): State<Arc<RegulatoryService>>,
+    Json(req): Json<RunComplianceCheckRequest>,
+) -> Result<Json<ComplianceCheckResult>, AppError> {
+    let check_request = ComplianceCheckRequest {
+        product_id: req.product_id,
+        requirement_ids: req.requirement_ids,
+        performed_by: req.performed_by,
+    };
+    let result = service.run_compliance_check(check_request).await?;
+    Ok(Json(result))
+}
+
+// Get audit trail
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/audit/{product_id}",
+    params(
+        ("product_id" = String, Path),
+        ("limit" = Option<i64>, Query, description = "Maximum number of records")
+    ),
+    responses(
+        (status = 200, description = "Audit trail", body = Vec<ComplianceAuditTrail>)
+    ),
+    tag = "regulatory"
+)]
+pub async fn get_audit_trail(
+    State(service): State<Arc<RegulatoryService>>,
+    Path(product_id): Path<String>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<ComplianceAuditTrail>>, AppError> {
+    let limit: i64 = params.get("limit")
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(100);
+    let audit = service.get_audit_trail(&product_id, limit).await?;
+    Ok(Json(audit))
+}
+
+// Generate compliance report
+#[utoipa::path(
+    post,
+    path = "/api/regulatory/reports",
+    request_body = GenerateReportRequest,
+    responses(
+        (status = 201, description = "Report generated", body = ComplianceReport)
+    ),
+    tag = "regulatory"
+)]
+pub async fn generate_report(
+    State(service): State<Arc<RegulatoryService>>,
+    Json(req): Json<GenerateReportRequest>,
+) -> Result<Json<ComplianceReport>, AppError> {
+    let report = NewComplianceReport {
+        report_type: req.report_type,
+        scope: req.scope,
+        generated_by: "system".to_string(), // TODO: Get from auth context
+        period_start: req.period_start,
+        period_end: req.period_end,
+    };
+    let result = service.generate_report(report).await?;
+    Ok(Json(result))
+}
+
+// Get compliance report
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/reports/{report_id}",
+    params(
+        ("report_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Report found", body = ComplianceReport),
+        (status = 404, description = "Report not found")
+    ),
+    tag = "regulatory"
+)]
+pub async fn get_report(
+    State(service): State<Arc<RegulatoryService>>,
+    Path(report_id): Path<String>,
+) -> Result<Json<ComplianceReport>, AppError> {
+    let report = service.get_report(&report_id).await?
+        .ok_or_else(|| AppError::NotFound("Report not found".to_string()))?;
+    Ok(Json(report))
+}
+
+// List compliance reports
+#[utoipa::path(
+    get,
+    path = "/api/regulatory/reports",
+    params(
+        ("limit" = Option<i64>, Query, description = "Maximum number of records")
+    ),
+    responses(
+        (status = 200, description = "List of reports", body = Vec<ComplianceReport>)
+    ),
+    tag = "regulatory"
+)]
+pub async fn list_reports(
+    State(service): State<Arc<RegulatoryService>>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<ComplianceReport>>, AppError> {
+    let limit: i64 = params.get("limit")
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(50);
+    let reports = service.list_reports(limit).await?;
+    Ok(Json(reports))
+}
diff --git a/backend/src/handlers/stats.rs b/backend/src/handlers/stats.rs
new file mode 100644
index 00000000..53482b9b
--- /dev/null
+++ b/backend/src/handlers/stats.rs
@@ -0,0 +1,31 @@
+use axum::{extract::State, response::Json};
+use serde_json::json;
+use utoipa::ToSchema;
+
+use crate::{AppState, error::AppError};
+
+#[utoipa::path(
+    get,
+    path = "/api/v1/stats",
+    tag = "stats",
+    responses(
+        (status = 200, description = "Statistics retrieved successfully"),
+        (status = 401, description = "Unauthorized"),
+        (status = 429, description = "Rate limit exceeded")
+    ),
+    security(
+        ("api_key" = [])
+    )
+)]
+pub async fn get_stats(State(state): State<AppState>) -> Result<Json<serde_json::Value>, AppError> {
+    let global_stats = state.event_service.get_global_stats().await?;
+    
+    Ok(Json(json!({
+        "total_products": global_stats.total_products,
+        "active_products": global_stats.active_products,
+        "total_events": global_stats.total_events,
+        "total_users": global_stats.total_users,
+        "active_api_keys": global_stats.active_api_keys,
+        "timestamp": chrono::Utc::now()
+    })))
+}
diff --git a/backend/src/handlers/supplier.rs b/backend/src/handlers/supplier.rs
new file mode 100644
index 00000000..fb16643a
--- /dev/null
+++ b/backend/src/handlers/supplier.rs
@@ -0,0 +1,353 @@
+use axum::{
+    extract::{Path, Query, State},
+    Json,
+};
+use serde::{Deserialize, Serialize};
+use std::sync::Arc;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+use crate::models::supplier::*;
+use crate::services::SupplierService;
+use crate::error::AppError;
+
+#[derive(Debug, Deserialize, ToSchema)]
+pub struct ListSuppliersQuery {
+    pub business_type: Option<String>,
+    pub tier: Option<String>,
+    pub verification_status: Option<String>,
+    pub is_verified: Option<bool>,
+    pub limit: Option<i64>,
+}
+
+// Create supplier
+#[utoipa::path(
+    post,
+    path = "/api/suppliers",
+    request_body = NewSupplier,
+    responses(
+        (status = 201, description = "Supplier created", body = Supplier)
+    ),
+    tag = "suppliers"
+)]
+pub async fn create_supplier(
+    State(service): State<Arc<SupplierService>>,
+    Json(req): Json<NewSupplier>,
+) -> Result<Json<Supplier>, AppError> {
+    let supplier = service.create_supplier(req).await?;
+    Ok(Json(supplier))
+}
+
+// Get supplier
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}",
+    params(
+        ("supplier_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Supplier found", body = Supplier),
+        (status = 404, description = "Supplier not found")
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_supplier(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+) -> Result<Json<Supplier>, AppError> {
+    let supplier = service.get_supplier(&supplier_id).await?
+        .ok_or_else(|| AppError::NotFound("Supplier not found".to_string()))?;
+    Ok(Json(supplier))
+}
+
+// List suppliers
+#[utoipa::path(
+    get,
+    path = "/api/suppliers",
+    params(ListSuppliersQuery),
+    responses(
+        (status = 200, description = "List of suppliers", body = Vec<Supplier>)
+    ),
+    tag = "suppliers"
+)]
+pub async fn list_suppliers(
+    State(service): State<Arc<SupplierService>>,
+    Query(query): Query<ListSuppliersQuery>,
+) -> Result<Json<Vec<Supplier>>, AppError> {
+    let limit = query.limit.unwrap_or(50);
+    let suppliers = service.list_suppliers(
+        query.business_type,
+        query.tier,
+        query.verification_status,
+        query.is_verified,
+        limit,
+    ).await?;
+    Ok(Json(suppliers))
+}
+
+// Update supplier verification
+#[utoipa::path(
+    put,
+    path = "/api/suppliers/{supplier_id}/verification",
+    params(
+        ("supplier_id" = String, Path)
+    ),
+    request_body = VerificationRequest,
+    responses(
+        (status = 200, description = "Verification updated", body = Supplier)
+    ),
+    tag = "suppliers"
+)]
+pub async fn update_verification(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+    Json(req): Json<VerificationRequest>,
+) -> Result<Json<Supplier>, AppError> {
+    let supplier = service.update_supplier_verification(
+        &supplier_id,
+        req.verification_status,
+        req.verified_by,
+        req.notes,
+    ).await?;
+    Ok(Json(supplier))
+}
+
+// Get supplier summary
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}/summary",
+    params(
+        ("supplier_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "Supplier summary", body = SupplierSummary),
+        (status = 404, description = "Supplier not found")
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_supplier_summary(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+) -> Result<Json<SupplierSummary>, AppError> {
+    let summary = service.get_supplier_summary(&supplier_id).await?
+        .ok_or_else(|| AppError::NotFound("Supplier not found".to_string()))?;
+    Ok(Json(summary))
+}
+
+// Create supplier rating
+#[utoipa::path(
+    post,
+    path = "/api/suppliers/ratings",
+    request_body = NewSupplierRating,
+    responses(
+        (status = 201, description = "Rating created", body = SupplierRating)
+    ),
+    tag = "suppliers"
+)]
+pub async fn create_rating(
+    State(service): State<Arc<SupplierService>>,
+    Json(req): Json<NewSupplierRating>,
+) -> Result<Json<SupplierRating>, AppError> {
+    let rating = service.create_rating(req).await?;
+    Ok(Json(rating))
+}
+
+// Get supplier ratings
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}/ratings",
+    params(
+        ("supplier_id" = String, Path),
+        ("limit" = Option<i64>, Query)
+    ),
+    responses(
+        (status = 200, description = "List of ratings", body = Vec<SupplierRating>)
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_ratings(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<SupplierRating>>, AppError> {
+    let limit: i64 = params.get("limit")
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(50);
+    let ratings = service.get_ratings(&supplier_id, limit).await?;
+    Ok(Json(ratings))
+}
+
+// Create supplier performance metric
+#[utoipa::path(
+    post,
+    path = "/api/suppliers/performance",
+    request_body = NewSupplierPerformance,
+    responses(
+        (status = 201, description = "Performance metric created", body = SupplierPerformance)
+    ),
+    tag = "suppliers"
+)]
+pub async fn create_performance(
+    State(service): State<Arc<SupplierService>>,
+    Json(req): Json<NewSupplierPerformance>,
+) -> Result<Json<SupplierPerformance>, AppError> {
+    let perf = service.create_performance(req).await?;
+    Ok(Json(perf))
+}
+
+// Get supplier performance
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}/performance",
+    params(
+        ("supplier_id" = String, Path),
+        ("limit" = Option<i64>, Query)
+    ),
+    responses(
+        (status = 200, description = "List of performance metrics", body = Vec<SupplierPerformance>)
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_performance(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<SupplierPerformance>>, AppError> {
+    let limit: i64 = params.get("limit")
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(50);
+    let perf = service.get_performance(&supplier_id, limit).await?;
+    Ok(Json(perf))
+}
+
+// Create supplier compliance record
+#[utoipa::path(
+    post,
+    path = "/api/suppliers/compliance",
+    request_body = NewSupplierCompliance,
+    responses(
+        (status = 201, description = "Compliance record created", body = SupplierCompliance)
+    ),
+    tag = "suppliers"
+)]
+pub async fn create_compliance(
+    State(service): State<Arc<SupplierService>>,
+    Json(req): Json<NewSupplierCompliance>,
+) -> Result<Json<SupplierCompliance>, AppError> {
+    let compliance = service.create_compliance(req).await?;
+    Ok(Json(compliance))
+}
+
+// Verify supplier compliance
+#[utoipa::path(
+    put,
+    path = "/api/suppliers/compliance/{compliance_id}/verify",
+    params(
+        ("compliance_id" = Uuid, Path)
+    ),
+    request_body = serde_json::Value,
+    responses(
+        (status = 200, description = "Compliance verified", body = SupplierCompliance)
+    ),
+    tag = "suppliers"
+)]
+pub async fn verify_compliance(
+    State(service): State<Arc<SupplierService>>,
+    Path(compliance_id): Path<Uuid>,
+    Json(body): Json<serde_json::Value>,
+) -> Result<Json<SupplierCompliance>, AppError> {
+    let verified_by = body.get("verified_by")
+        .and_then(|v| v.as_str())
+        .ok_or_else(|| AppError::BadRequest("verified_by required".to_string()))?
+        .to_string();
+    let status = body.get("status")
+        .and_then(|v| v.as_str())
+        .ok_or_else(|| AppError::BadRequest("status required".to_string()))?
+        .to_string();
+    
+    let compliance = service.verify_compliance(compliance_id, verified_by, status).await?;
+    Ok(Json(compliance))
+}
+
+// Get supplier compliance
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}/compliance",
+    params(
+        ("supplier_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "List of compliance records", body = Vec<SupplierCompliance>)
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_compliance(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+) -> Result<Json<Vec<SupplierCompliance>>, AppError> {
+    let compliance = service.get_compliance(&supplier_id).await?;
+    Ok(Json(compliance))
+}
+
+// Add supplier product
+#[utoipa::path(
+    post,
+    path = "/api/suppliers/products",
+    request_body = NewSupplierProduct,
+    responses(
+        (status = 201, description = "Supplier product added", body = SupplierProduct)
+    ),
+    tag = "suppliers"
+)]
+pub async fn add_supplier_product(
+    State(service): State<Arc<SupplierService>>,
+    Json(req): Json<NewSupplierProduct>,
+) -> Result<Json<SupplierProduct>, AppError> {
+    let sp = service.add_supplier_product(req).await?;
+    Ok(Json(sp))
+}
+
+// Get supplier products
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}/products",
+    params(
+        ("supplier_id" = String, Path)
+    ),
+    responses(
+        (status = 200, description = "List of supplier products", body = Vec<SupplierProduct>)
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_supplier_products(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+) -> Result<Json<Vec<SupplierProduct>>, AppError> {
+    let products = service.get_supplier_products(&supplier_id).await?;
+    Ok(Json(products))
+}
+
+// Get supplier audit trail
+#[utoipa::path(
+    get,
+    path = "/api/suppliers/{supplier_id}/audit",
+    params(
+        ("supplier_id" = String, Path),
+        ("limit" = Option<i64>, Query)
+    ),
+    responses(
+        (status = 200, description = "Audit trail", body = Vec<SupplierAuditTrail>)
+    ),
+    tag = "suppliers"
+)]
+pub async fn get_audit_trail(
+    State(service): State<Arc<SupplierService>>,
+    Path(supplier_id): Path<String>,
+    Query(params): Query<std::collections::HashMap<String, String>>,
+) -> Result<Json<Vec<SupplierAuditTrail>>, AppError> {
+    let limit: i64 = params.get("limit")
+        .and_then(|s| s.parse().ok())
+        .unwrap_or(100);
+    let audit = service.get_audit_trail(&supplier_id, limit).await?;
+    Ok(Json(audit))
+}
diff --git a/backend/src/handlers/user.rs b/backend/src/handlers/user.rs
new file mode 100644
index 00000000..cb6f4f28
--- /dev/null
+++ b/backend/src/handlers/user.rs
@@ -0,0 +1,10 @@
+use axum::{extract::State, response::Json};
+use super::super::{AppState, error::AppError};
+
+pub async fn create_user(State(_state): State<AppState>) -> Result<Json<serde_json::Value>, AppError> {
+    Ok(Json(serde_json::json!({"message": "Not implemented yet"})))
+}
+
+pub async fn get_current_user(State(_state): State<AppState>) -> Result<Json<serde_json::Value>, AppError> {
+    Ok(Json(serde_json::json!({"message": "Not implemented yet"})))
+}
diff --git a/backend/src/main.rs b/backend/src/main.rs
new file mode 100644
index 00000000..15125e74
--- /dev/null
+++ b/backend/src/main.rs
@@ -0,0 +1,174 @@
+use axum::{
+    middleware as axum_middleware,
+    routing::{get, post},
+    Router,
+};
+use std::env;
+use std::net::SocketAddr;
+use std::sync::Arc;
+use tower::ServiceBuilder;
+use tower_http::{cors::CorsLayer, trace::TraceLayer};
+
+mod blockchain;
+mod compliance;
+mod config;
+mod database;
+mod docs;
+mod error;
+mod handlers;
+mod middleware;
+mod models;
+mod monitoring;
+mod routes;
+mod services;
+mod utils;
+mod validation;
+mod websocket;
+
+use config::Config;
+use database::Database;
+use services::{ProductService, EventService, UserService, ApiKeyService, SyncService, FinancialService, AnalyticsService, CarbonService, RecallService, AuditService, BatchService, RegulatoryService, IoTService, QualityService, SupplierService};
+use utils::CronService;
+use error::AppError;
+use monitoring::MonitoringSystem;
+
+#[derive(Clone)]
+pub struct AppState {
+    pub db: Database,
+    pub product_service: Arc<ProductService>,
+    pub event_service: Arc<EventService>,
+    pub user_service: Arc<UserService>,
+    pub api_key_service: Arc<ApiKeyService>,
+    pub sync_service: Arc<SyncService>,
+    pub financial_service: Arc<FinancialService>,
+    pub analytics_service: Arc<AnalyticsService>,
+    pub carbon_service: Arc<CarbonService>,
+    pub collaboration_service: Arc<CollaborationService>,
+    pub redis_client: redis::Client,
+    pub config: Config,
+    pub monitoring_system: MonitoringSystem,
+}
+
+impl AppState {
+    pub async fn new() -> Result<Self, Box<dyn std::error::Error>> {
+        let config = Config::from_env()?;
+
+
+        // Initialize database
+        let db = Database::new(&config.database).await?;
+
+        // Run migrations
+        db.migrate().await?;
+
+        // Initialize Redis client
+        let redis_client = redis::Client::open(config.redis.url.as_str())?;
+
+        // Create services
+        let product_service =
+            Arc::new(ProductService::new(db.pool().clone(), redis_client.clone()));
+        let event_service = Arc::new(EventService::new(db.pool().clone(), redis_client.clone()));
+        let user_service = Arc::new(UserService::new(
+            db.pool().clone(),
+            config.encryption_key.clone(),
+        ));
+        let api_key_service = Arc::new(ApiKeyService::new(db.pool().clone()));
+        let sync_service = Arc::new(SyncService::new(db.pool().clone(), redis_client.clone()));
+        let financial_service = Arc::new(FinancialService::new(db.pool().clone()));
+        let analytics_service = Arc::new(AnalyticsService::new(
+            db.pool().clone(),
+            config.redis.url.clone(),
+        ));
+        let carbon_service = Arc::new(CarbonService::new(db.pool().clone()));
+        let collaboration_service = Arc::new(CollaborationService::new(db.pool().clone()));
+        
+        // Initialize comprehensive monitoring system
+        let monitoring_system = MonitoringSystem::new();
+        
+        Ok(Self {
+            db,
+            product_service,
+            event_service,
+            user_service,
+            api_key_service,
+            sync_service,
+            financial_service,
+            analytics_service,
+            carbon_service,
+            collaboration_service,
+            redis_client,
+            config,
+            monitoring_system,
+        })
+
+    }
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Initialize tracing
+    let log_format = env::var("LOG_FORMAT").unwrap_or_else(|_| "json".to_string());
+    let env_filter = tracing_subscriber::EnvFilter::from_default_env();
+    if log_format.eq_ignore_ascii_case("pretty") {
+        tracing_subscriber::fmt().with_env_filter(env_filter).init();
+    } else {
+        tracing_subscriber::fmt()
+            .with_env_filter(env_filter)
+            .json()
+            .flatten_event(true)
+            .init();
+    }
+
+    // Create application state
+    let app_state = AppState::new().await?;
+
+    // Start background services
+    let cron_service =
+        CronService::new(app_state.db.pool().clone(), app_state.redis_client.clone());
+    cron_service.start_scheduler().await;
+
+    // Build router with security middleware
+    let app = Router::new()
+        .merge(crate::routes::health_routes())
+        .merge(crate::routes::api_routes())
+        .merge(crate::docs::create_swagger_ui())
+        .layer(
+            ServiceBuilder::new()
+                .layer(TraceLayer::new_for_http())
+                .layer(axum_middleware::from_fn(
+                    middleware::error_handler::request_logger,
+                ))
+                .layer(axum_middleware::from_fn_with_state(
+                    app_state.clone(),
+                    middleware::error_handler::global_error_handler,
+                ))
+                .layer(axum_middleware::from_fn_with_state(
+                    app_state.clone(),
+                    middleware::security::enforce_https,
+                ))
+                .layer(axum_middleware::from_fn_with_state(
+                    app_state.clone(),
+                    middleware::security::security_headers,
+                ))
+                .layer(axum_middleware::from_fn_with_state(
+                    app_state.clone(),
+                    middleware::security::cors_policy,
+                )),
+        )
+        .with_state(app_state.clone());
+
+    // Run server
+    let config = Config::from_env()?;
+    let addr = SocketAddr::from((
+        config.server.host.parse::<std::net::IpAddr>()?,
+        config.server.port,
+    ));
+
+    tracing::info!("Server listening on {}", addr);
+    tracing::info!("HTTPS enforcement: {}", config.security.enforce_https);
+    tracing::info!("TLS enabled: {}", config.server.tls_enabled);
+
+    let listener = tokio::net::TcpListener::bind(addr).await?;
+    axum::serve(listener, app).await?;
+
+    Ok(())
+}
diff --git a/backend/src/middleware.rs b/backend/src/middleware.rs
new file mode 100644
index 00000000..c4534eab
--- /dev/null
+++ b/backend/src/middleware.rs
@@ -0,0 +1,6 @@
+// Middleware modules
+pub mod auth;
+pub mod audit;
+pub mod rate_limit;
+pub mod security;
+pub mod error_handler;
diff --git a/backend/src/middleware/audit.rs b/backend/src/middleware/audit.rs
new file mode 100644
index 00000000..b27b3909
--- /dev/null
+++ b/backend/src/middleware/audit.rs
@@ -0,0 +1,232 @@
+use axum::http::{HeaderMap, Method, StatusCode, Uri};
+use serde_json::json;
+
+use crate::{
+    middleware::auth::AuthContext,
+    services::audit_service::{AuditEventCategory, AuditSeverity, NewAuditEvent},
+    AppState,
+};
+
+pub const CORRELATION_ID_HEADER: &str = "x-correlation-id";
+
+pub fn should_skip_audit(path: &str) -> bool {
+    path == "/health"
+        || path == "/health/db"
+        || path.starts_with("/docs")
+        || path.starts_with("/swagger")
+        || path.starts_with("/api-docs")
+}
+
+pub fn correlation_id_from_headers(headers: &HeaderMap) -> Option<String> {
+    headers
+        .get(CORRELATION_ID_HEADER)
+        .or_else(|| headers.get("x-request-id"))
+        .and_then(|value| value.to_str().ok())
+        .map(|value| sanitize_correlation_id(value))
+        .filter(|value| !value.is_empty())
+}
+
+pub fn client_ip_from_headers(headers: &HeaderMap) -> Option<String> {
+    headers
+        .get("x-forwarded-for")
+        .or_else(|| headers.get("x-real-ip"))
+        .and_then(|value| value.to_str().ok())
+        .map(|value| value.to_string())
+}
+
+pub fn user_agent_from_headers(headers: &HeaderMap) -> Option<String> {
+    headers
+        .get("user-agent")
+        .and_then(|value| value.to_str().ok())
+        .map(|value| value.to_string())
+}
+
+pub fn spawn_http_audit(
+    state: AppState,
+    auth_context: Option<AuthContext>,
+    method: Method,
+    uri: Uri,
+    status: StatusCode,
+    headers: HeaderMap,
+    correlation_id: Option<String>,
+) {
+    let path = uri.path().to_string();
+    if should_skip_audit(&path) {
+        return;
+    }
+
+    let event = build_http_audit_event(auth_context, method, uri, status, headers, correlation_id);
+
+    tokio::spawn(async move {
+        let correlation_id = event.correlation_id.clone();
+        if let Err(err) = state.audit_service.log(event).await {
+            tracing::warn!(
+                correlation_id = correlation_id.as_deref().unwrap_or("unknown"),
+                error = ?err,
+                "Failed to persist audit event"
+            );
+        }
+    });
+}
+
+pub fn build_http_audit_event(
+    auth_context: Option<AuthContext>,
+    method: Method,
+    uri: Uri,
+    status: StatusCode,
+    headers: HeaderMap,
+    correlation_id: Option<String>,
+) -> NewAuditEvent {
+    let path = uri.path().to_string();
+    let event_category = classify_event(&method, &path, status);
+    let severity = classify_severity(status);
+    let success = status.is_success();
+    let resource_type = resource_type_from_path(&path);
+    let target_resource_id = target_resource_id_from_path(&path);
+    let action = format!("{} {}", method.as_str(), path);
+
+    NewAuditEvent {
+        correlation_id,
+        user_id: auth_context.as_ref().map(|context| context.user_id),
+        actor_api_key_id: auth_context.as_ref().and_then(|context| context.api_key_id),
+        event_category,
+        event_type: "http_request".to_string(),
+        severity,
+        action,
+        resource_type,
+        target_resource_id,
+        http_method: Some(method.as_str().to_string()),
+        http_path: Some(path),
+        http_status: Some(status.as_u16()),
+        success,
+        error_code: if success {
+            None
+        } else {
+            Some(status.as_u16().to_string())
+        },
+        business_context: business_context_from_path(uri.path()),
+        changes: json!({
+            "query": uri.query(),
+        }),
+        ip_address: client_ip_from_headers(&headers),
+        user_agent: user_agent_from_headers(&headers),
+    }
+}
+
+fn classify_event(method: &Method, path: &str, status: StatusCode) -> AuditEventCategory {
+    if status == StatusCode::UNAUTHORIZED
+        || status == StatusCode::FORBIDDEN
+        || status == StatusCode::TOO_MANY_REQUESTS
+        || status.is_server_error()
+    {
+        return AuditEventCategory::SecurityEvent;
+    }
+
+    if is_business_path(path) && method != Method::GET {
+        return AuditEventCategory::BusinessEvent;
+    }
+
+    if method == Method::GET {
+        AuditEventCategory::DataAccess
+    } else {
+        AuditEventCategory::UserAction
+    }
+}
+
+fn classify_severity(status: StatusCode) -> AuditSeverity {
+    if status.is_server_error() {
+        AuditSeverity::Error
+    } else if status.is_client_error() {
+        AuditSeverity::Warn
+    } else {
+        AuditSeverity::Info
+    }
+}
+
+fn is_business_path(path: &str) -> bool {
+    path.contains("/products")
+        || path.contains("/events")
+        || path.contains("/transactions")
+        || path.contains("/invoices")
+        || path.contains("/financing")
+        || path.contains("/carbon")
+        || path.contains("/compliance")
+}
+
+fn business_context_from_path(path: &str) -> Option<String> {
+    if is_business_path(path) {
+        Some("supply_chain_operation".to_string())
+    } else {
+        None
+    }
+}
+
+fn resource_type_from_path(path: &str) -> Option<String> {
+    let mut segments = path.split('/').filter(|segment| !segment.is_empty());
+    while let Some(segment) = segments.next() {
+        if segment == "v1" || segment == "admin" {
+            continue;
+        }
+        return Some(segment.to_string());
+    }
+    None
+}
+
+fn target_resource_id_from_path(path: &str) -> Option<String> {
+    let segments: Vec<&str> = path
+        .split('/')
+        .filter(|segment| !segment.is_empty())
+        .collect();
+    segments.windows(2).find_map(|pair| {
+        let candidate = pair[1];
+        if candidate.starts_with(':') || candidate == "me" {
+            None
+        } else if pair[0] != "v1" && pair[0] != "admin" {
+            Some(candidate.to_string())
+        } else {
+            None
+        }
+    })
+}
+
+fn sanitize_correlation_id(value: &str) -> String {
+    value
+        .chars()
+        .filter(|ch| ch.is_ascii_alphanumeric() || matches!(ch, '-' | '_' | '.' | ':'))
+        .take(128)
+        .collect()
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn classifies_get_as_data_access() {
+        assert_eq!(
+            classify_event(&Method::GET, "/api/v1/products", StatusCode::OK),
+            AuditEventCategory::DataAccess
+        );
+    }
+
+    #[test]
+    fn classifies_business_writes() {
+        assert_eq!(
+            classify_event(&Method::POST, "/api/v1/admin/products", StatusCode::CREATED),
+            AuditEventCategory::BusinessEvent
+        );
+    }
+
+    #[test]
+    fn classifies_auth_failures_as_security_events() {
+        assert_eq!(
+            classify_event(&Method::GET, "/api/v1/products", StatusCode::FORBIDDEN),
+            AuditEventCategory::SecurityEvent
+        );
+    }
+
+    #[test]
+    fn sanitizes_correlation_ids() {
+        assert_eq!(sanitize_correlation_id("abc\r\n123"), "abc123");
+    }
+}
diff --git a/backend/src/middleware/auth.rs b/backend/src/middleware/auth.rs
new file mode 100644
index 00000000..be3f5fad
--- /dev/null
+++ b/backend/src/middleware/auth.rs
@@ -0,0 +1,205 @@
+use axum::{
+    extract::{Request, State},
+    http::{header, StatusCode},
+    middleware::Next,
+    response::Response,
+};
+use std::sync::Arc;
+use tower::ServiceExt;
+
+use crate::{AppState, database::{ApiKeyRepository, UserRepository}, error::AppError, models::UserRole};
+use crate::middleware::audit::{correlation_id_from_headers, spawn_http_audit};
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone)]
+pub struct AuthContext {
+    pub user_id: uuid::Uuid,
+    pub api_key_id: Option<uuid::Uuid>,
+    pub tier: Option<crate::models::ApiKeyTier>,
+    pub stellar_address: Option<String>,
+    pub role: UserRole,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String, // User ID
+    pub exp: usize,
+    pub role: UserRole,
+}
+
+pub async fn jwt_auth(
+    State(state): State<AppState>,
+    mut request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    let method = request.method().clone();
+    let uri = request.uri().clone();
+    let headers = request.headers().clone();
+    let correlation_id = request
+        .extensions()
+        .get::<String>()
+        .cloned()
+        .or_else(|| correlation_id_from_headers(&headers));
+
+    let auth_header = request
+        .headers()
+        .get(header::AUTHORIZATION)
+        .and_then(|h| h.to_str().ok())
+        .and_then(|h| h.strip_prefix("Bearer "))
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    let token_data = jsonwebtoken::decode::<Claims>(
+        auth_header,
+        &jsonwebtoken::DecodingKey::from_secret(state.config.jwt_secret.as_bytes()),
+        &jsonwebtoken::Validation::default(),
+    )
+    .map_err(|_| AppError::Unauthorized)?;
+
+    let user_id = uuid::Uuid::parse_str(&token_data.claims.sub)
+        .map_err(|_| AppError::Unauthorized)?;
+
+    let user = state.user_service.get_user(user_id).await?
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    if !user.is_active {
+        return Err(AppError::Unauthorized);
+    }
+
+    let auth_context = AuthContext {
+        user_id: user.id,
+        api_key_id: None,
+        tier: None,
+        stellar_address: user.stellar_address,
+        role: user.role,
+    };
+
+    request.extensions_mut().insert(auth_context.clone());
+    let response = next.run(request).await;
+
+    spawn_http_audit(
+        state,
+        Some(auth_context),
+        method,
+        uri,
+        response.status(),
+        headers,
+        correlation_id,
+    );
+
+    Ok(response)
+}
+
+pub async fn api_key_auth(
+    State(state): State<AppState>,
+    mut request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    let method = request.method().clone();
+    let uri = request.uri().clone();
+    let headers = request.headers().clone();
+    let correlation_id = request
+        .extensions()
+        .get::<String>()
+        .cloned()
+        .or_else(|| correlation_id_from_headers(&headers));
+
+    let auth_header = request
+        .headers()
+        .get(header::AUTHORIZATION)
+        .and_then(|h| h.to_str().ok())
+        .and_then(|h| h.strip_prefix("Bearer "))
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    let key_hash = crate::services::ApiKeyService::hash_api_key(auth_header);
+
+    let api_key = state
+        .api_key_service
+        .get_api_key_by_hash(&key_hash)
+        .await?
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    if !api_key.is_active {
+        return Err(AppError::Unauthorized);
+    }
+
+    if let Some(expires_at) = api_key.expires_at {
+        if expires_at < chrono::Utc::now() {
+            return Err(AppError::Unauthorized);
+        }
+    }
+
+    let user = state
+        .user_service
+        .get_user(api_key.user_id)
+        .await?
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    if !user.is_active {
+        return Err(AppError::Unauthorized);
+    }
+
+    let _ = state.api_key_service.update_last_used(api_key.id).await;
+
+    let auth_context = AuthContext {
+        user_id: user.id,
+        api_key_id: Some(api_key.id),
+        tier: Some(api_key.tier),
+        stellar_address: user.stellar_address,
+        role: user.role,
+    };
+
+    request.extensions_mut().insert(auth_context.clone());
+    let response = next.run(request).await;
+
+    spawn_http_audit(
+        state,
+        Some(auth_context),
+        method,
+        uri,
+        response.status(),
+        headers,
+        correlation_id,
+    );
+
+    Ok(response)
+}
+
+pub fn require_role(roles: Vec<UserRole>) -> impl Fn(Request, Next) -> std::pin::Pin<Box<dyn std::future::Future<Output = Result<Response, AppError>> + Send>> + Clone {
+    move |request: Request, next: Next| {
+        let roles = roles.clone();
+        Box::pin(async move {
+            let auth_context = request
+                .extensions()
+                .get::<AuthContext>()
+                .ok_or_else(|| AppError::Unauthorized)?;
+
+            if !roles.iter().any(|r| std::mem::discriminant(r) == std::mem::discriminant(&auth_context.role)) {
+                return Err(AppError::Forbidden("Insufficient permissions".to_string()));
+            }
+
+            Ok(next.run(request).await)
+        })
+    }
+}
+
+pub async fn require_admin(
+    request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    let auth_context = request
+        .extensions()
+        .get::<AuthContext>()
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    match auth_context.role {
+        UserRole::Administrator => Ok(next.run(request).await),
+        _ => Err(AppError::Forbidden("Admin access required".to_string())),
+    }
+}
+
+pub fn get_auth_context(request: &Request) -> Result<&AuthContext, AppError> {
+    request
+        .extensions()
+        .get::<AuthContext>()
+        .ok_or_else(|| AppError::Unauthorized)
+}
diff --git a/backend/src/middleware/error_handler.rs b/backend/src/middleware/error_handler.rs
new file mode 100644
index 00000000..ada9b155
--- /dev/null
+++ b/backend/src/middleware/error_handler.rs
@@ -0,0 +1,191 @@
+use axum::{
+    body::Body,
+    extract::Request,
+    http::{header::HeaderName, HeaderValue, StatusCode},
+    middleware::Next,
+    response::{IntoResponse, Response},
+    Json,
+};
+use uuid::Uuid;
+
+use crate::middleware::audit::{correlation_id_from_headers, CORRELATION_ID_HEADER};
+use crate::error::{ErrorCode, ErrorResponse};
+
+/// Global error handler middleware
+/// Catches any unhandled errors and panics, ensuring consistent error responses
+pub async fn global_error_handler(
+    request: Request,
+    next: Next,
+) -> Result<Response, Response> {
+    let correlation_id = request
+        .extensions()
+        .get::<String>()
+        .cloned()
+        .or_else(|| correlation_id_from_headers(request.headers()))
+        .unwrap_or_else(|| Uuid::new_v4().to_string());
+    
+    // Add correlation ID to request extensions for tracking
+    let mut request = request;
+    request.extensions_mut().insert(correlation_id.clone());
+    
+    // Execute the request
+    let response = next.run(request).await;
+    
+    // Check if the response is an error status
+    let status = response.status();
+    
+    if status.is_client_error() || status.is_server_error() {
+        // Log the error with correlation ID
+        if status.is_server_error() {
+            tracing::error!(
+                correlation_id = %correlation_id,
+                status = %status,
+                "Server error occurred"
+            );
+        } else {
+            tracing::debug!(
+                correlation_id = %correlation_id,
+                status = %status,
+                "Client error occurred"
+            );
+        }
+    }
+    
+    Ok(response)
+}
+
+/// Panic handler that converts panics to proper error responses
+pub fn handle_panic(err: Box<dyn std::any::Any + Send + 'static>) -> Response {
+    let correlation_id = Uuid::new_v4().to_string();
+    
+    let details = if let Some(s) = err.downcast_ref::<String>() {
+        s.clone()
+    } else if let Some(s) = err.downcast_ref::<&str>() {
+        s.to_string()
+    } else {
+        "Unknown panic".to_string()
+    };
+
+    tracing::error!(
+        correlation_id = %correlation_id,
+        panic_details = %details,
+        "Panic occurred in request handler"
+    );
+
+    let mut response = ErrorResponse::new(
+        StatusCode::INTERNAL_SERVER_ERROR,
+        ErrorCode::InternalServerError,
+        "An unexpected error occurred. Please contact support if the problem persists.".to_string(),
+    );
+    response.correlation_id = correlation_id;
+
+    (StatusCode::INTERNAL_SERVER_ERROR, Json(response)).into_response()
+}
+
+/// Request logging middleware with correlation ID
+pub async fn request_logger(
+    request: Request,
+    next: Next,
+) -> Response {
+    let correlation_id = request
+        .extensions()
+        .get::<String>()
+        .cloned()
+        .or_else(|| correlation_id_from_headers(request.headers()))
+        .unwrap_or_else(|| Uuid::new_v4().to_string());
+    
+    let method = request.method().clone();
+    let uri = request.uri().clone();
+    let start = std::time::Instant::now();
+    let mut request = request;
+    request.extensions_mut().insert(correlation_id.clone());
+    
+    tracing::info!(
+        correlation_id = %correlation_id,
+        method = %method,
+        uri = %uri,
+        "Request started"
+    );
+    
+    let mut response = next.run(request).await;
+    
+    let duration = start.elapsed();
+    let status = response.status();
+    
+    let log_level = if status.is_server_error() {
+        tracing::Level::ERROR
+    } else if status.is_client_error() {
+        tracing::Level::WARN
+    } else {
+        tracing::Level::INFO
+    };
+    
+    tracing::event!(
+        log_level,
+        correlation_id = %correlation_id,
+        method = %method,
+        uri = %uri,
+        status = %status.as_u16(),
+        duration_ms = %duration.as_millis(),
+        "Request completed"
+    );
+
+    if let Ok(header_value) = HeaderValue::from_str(&correlation_id) {
+        response.headers_mut().insert(
+            HeaderName::from_static(CORRELATION_ID_HEADER),
+            header_value,
+        );
+    }
+    
+    response
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use axum::{
+        body::Body,
+        http::{Request, StatusCode},
+        middleware,
+        response::IntoResponse,
+        routing::get,
+        Router,
+    };
+    use tower::ServiceExt;
+
+    async fn test_handler() -> impl IntoResponse {
+        (StatusCode::OK, "OK")
+    }
+
+    async fn error_handler() -> Result<impl IntoResponse, crate::error::AppError> {
+        Err(crate::error::AppError::Internal("Test error".to_string()))
+    }
+
+    #[tokio::test]
+    async fn test_request_logger_success() {
+        let app = Router::new()
+            .route("/test", get(test_handler))
+            .layer(middleware::from_fn(request_logger));
+
+        let response = app
+            .oneshot(Request::builder().uri("/test").body(Body::empty()).unwrap())
+            .await
+            .unwrap();
+
+        assert_eq!(response.status(), StatusCode::OK);
+    }
+
+    #[tokio::test]
+    async fn test_request_logger_error() {
+        let app = Router::new()
+            .route("/error", get(error_handler))
+            .layer(middleware::from_fn(request_logger));
+
+        let response = app
+            .oneshot(Request::builder().uri("/error").body(Body::empty()).unwrap())
+            .await
+            .unwrap();
+
+        assert!(response.status().is_server_error());
+    }
+}
diff --git a/backend/src/middleware/rate_limit.rs b/backend/src/middleware/rate_limit.rs
new file mode 100644
index 00000000..f6d88d03
--- /dev/null
+++ b/backend/src/middleware/rate_limit.rs
@@ -0,0 +1,95 @@
+use axum::{
+    extract::{Request, State},
+    middleware::Next,
+    response::Response,
+};
+use redis::AsyncCommands;
+use std::sync::Arc;
+use chrono::{Utc, Timelike};
+
+use crate::{AppState, error::AppError, models::ApiKeyTier};
+
+pub async fn rate_limit_middleware(
+    State(state): State<AppState>,
+    request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    // Get auth context from request extensions
+    let auth_context = request
+        .extensions()
+        .get::<crate::middleware::auth::AuthContext>()
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    // Get API key details to check rate limit
+    let api_key = state
+        .api_key_service
+        .get_api_key(auth_context.api_key_id)
+        .await?
+        .ok_or_else(|| AppError::Unauthorized)?;
+
+    // Check rate limit based on tier
+    let tier_limit = match api_key.tier {
+        ApiKeyTier::Basic => 60,
+        ApiKeyTier::Standard => 300,
+        ApiKeyTier::Premium => 1000,
+        ApiKeyTier::Enterprise => 5000,
+    };
+
+    // Use the custom rate limit if it's set and lower than the tier limit
+    let effective_limit = if api_key.rate_limit_per_minute > 0 && api_key.rate_limit_per_minute < tier_limit {
+        api_key.rate_limit_per_minute
+    } else {
+        tier_limit
+    };
+
+    // Redis rate limiting logic (Fixed Window)
+    let mut conn = state.redis_client.get_multiplexed_tokio_connection().await
+        .map_err(|e| {
+            tracing::error!("Redis connection error: {}", e);
+            AppError::Internal(e.to_string())
+        })?;
+
+    let now = Utc::now();
+    let window_key = format!("ratelimit:{}:{}", auth_context.api_key_id, now.format("%Y%m%d%H%M"));
+    
+    let count: u32 = conn.incr(&window_key, 1).await
+        .map_err(|e| {
+            tracing::error!("Redis INCR error: {}", e);
+            AppError::Internal(e.to_string())
+        })?;
+
+    if count == 1 {
+        let _: () = conn.expire(&window_key, 60).await
+            .map_err(|e| {
+                tracing::error!("Redis EXPIRE error: {}", e);
+                AppError::Internal(e.to_string())
+            })?;
+    }
+
+    if count > effective_limit {
+        return Err(AppError::RateLimit);
+    }
+
+    // Add rate limit headers to response
+    let response = next.run(request).await;
+    
+    let (mut parts, body) = response.into_parts();
+    parts.headers.insert(
+        "X-RateLimit-Limit",
+        effective_limit.to_string().parse().unwrap(),
+    );
+    parts.headers.insert(
+        "X-RateLimit-Remaining",
+        effective_limit.saturating_sub(count).to_string().parse().unwrap(),
+    );
+    parts.headers.insert(
+        "X-RateLimit-Reset",
+        ((now + chrono::Duration::minutes(1)).with_second(0).unwrap().with_nanosecond(0).unwrap())
+            .timestamp()
+            .to_string()
+            .parse()
+            .unwrap(),
+    );
+
+    Ok(Response::from_parts(parts, body))
+}
diff --git a/backend/src/middleware/security.rs b/backend/src/middleware/security.rs
new file mode 100644
index 00000000..0fedf7ad
--- /dev/null
+++ b/backend/src/middleware/security.rs
@@ -0,0 +1,257 @@
+use axum::{
+    extract::{Request, State},
+    http::{header, HeaderValue, StatusCode, Uri},
+    middleware::Next,
+    response::{IntoResponse, Response},
+};
+
+use crate::{AppState, error::AppError};
+
+/// Middleware to enforce HTTPS connections
+/// Redirects HTTP requests to HTTPS in production
+pub async fn enforce_https(
+    State(state): State<AppState>,
+    request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    // Skip enforcement if disabled (e.g., local development)
+    if !state.config.security.enforce_https {
+        return Ok(next.run(request).await);
+    }
+
+    // Check if request is already HTTPS
+    let is_https = request
+        .headers()
+        .get("x-forwarded-proto")
+        .and_then(|v| v.to_str().ok())
+        .map(|v| v == "https")
+        .unwrap_or_else(|| {
+            // Check if TLS is enabled on the server
+            state.config.server.tls_enabled
+        });
+
+    if !is_https {
+        // Redirect to HTTPS
+        let uri = request.uri();
+        let host = request
+            .headers()
+            .get(header::HOST)
+            .and_then(|v| v.to_str().ok())
+            .unwrap_or("localhost");
+
+        let https_url = format!("https://{}{}", host, uri.path_and_query().map(|pq| pq.as_str()).unwrap_or("/"));
+
+        return Ok((
+            StatusCode::MOVED_PERMANENTLY,
+            [(header::LOCATION, https_url)],
+        )
+            .into_response());
+    }
+
+    Ok(next.run(request).await)
+}
+
+/// Middleware to add security headers
+/// Implements HSTS, CSP, and other security best practices
+pub async fn security_headers(
+    State(state): State<AppState>,
+    request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    let mut response = next.run(request).await;
+    let headers = response.headers_mut();
+
+    // HTTP Strict Transport Security (HSTS)
+    // Tells browsers to only use HTTPS for future requests
+    if state.config.security.enforce_https {
+        let hsts_value = format!(
+            "max-age={}; includeSubDomains; preload",
+            state.config.security.hsts_max_age
+        );
+        headers.insert(
+            header::STRICT_TRANSPORT_SECURITY,
+            HeaderValue::from_str(&hsts_value).unwrap(),
+        );
+    }
+
+    // Content Security Policy (CSP)
+    // Prevents XSS and other injection attacks
+    headers.insert(
+        header::CONTENT_SECURITY_POLICY,
+        HeaderValue::from_static(
+            "default-src 'self'; \
+             script-src 'self' 'unsafe-inline' 'unsafe-eval'; \
+             style-src 'self' 'unsafe-inline'; \
+             img-src 'self' data: https:; \
+             font-src 'self' data:; \
+             connect-src 'self' https:; \
+             frame-ancestors 'none';"
+        ),
+    );
+
+    // X-Frame-Options
+    // Prevents clickjacking attacks
+    headers.insert(
+        header::X_FRAME_OPTIONS,
+        HeaderValue::from_static("DENY"),
+    );
+
+    // X-Content-Type-Options
+    // Prevents MIME type sniffing
+    headers.insert(
+        header::X_CONTENT_TYPE_OPTIONS,
+        HeaderValue::from_static("nosniff"),
+    );
+
+    // X-XSS-Protection
+    // Enables browser XSS protection (legacy browsers)
+    headers.insert(
+        HeaderValue::from_static("x-xss-protection"),
+        HeaderValue::from_static("1; mode=block"),
+    );
+
+    // Referrer-Policy
+    // Controls how much referrer information is sent
+    headers.insert(
+        header::REFERRER_POLICY,
+        HeaderValue::from_static("strict-origin-when-cross-origin"),
+    );
+
+    // Permissions-Policy (formerly Feature-Policy)
+    // Controls which browser features can be used
+    headers.insert(
+        HeaderValue::from_static("permissions-policy"),
+        HeaderValue::from_static(
+            "geolocation=(), microphone=(), camera=(), payment=()"
+        ),
+    );
+
+    Ok(response)
+}
+
+/// Middleware to validate and enforce CORS policies
+pub async fn cors_policy(
+    State(state): State<AppState>,
+    request: Request,
+    next: Next,
+) -> Result<Response, AppError> {
+    let origin = request
+        .headers()
+        .get(header::ORIGIN)
+        .and_then(|v| v.to_str().ok());
+
+    // Handle pre-flight OPTIONS requests
+    if request.method() == axum::http::Method::OPTIONS {
+        if let Some(origin_value) = origin {
+            let is_allowed = state.config.security.allowed_origins.iter().any(|allowed| {
+                // Support wildcard subdomains
+                if allowed.starts_with("*.") {
+                    let domain = &allowed[2..];
+                    origin_value.ends_with(domain)
+                } else {
+                    origin_value == allowed
+                }
+            });
+
+            if is_allowed {
+                return Ok((
+                    StatusCode::OK,
+                    [
+                        (header::ACCESS_CONTROL_ALLOW_ORIGIN, HeaderValue::from_str(origin_value).unwrap()),
+                        (header::ACCESS_CONTROL_ALLOW_CREDENTIALS, HeaderValue::from_static("true")),
+                        (header::ACCESS_CONTROL_ALLOW_METHODS, HeaderValue::from_static("GET, POST, PUT, DELETE, PATCH, OPTIONS")),
+                        (header::ACCESS_CONTROL_ALLOW_HEADERS, HeaderValue::from_static("Content-Type, Authorization, X-Requested-With, X-CSRF-Token")),
+                        (header::ACCESS_CONTROL_EXPOSE_HEADERS, HeaderValue::from_static("Content-Length, Content-Type")),
+                        (header::ACCESS_CONTROL_MAX_AGE, HeaderValue::from_static("86400")), // 24 hours
+                        (header::VARY, HeaderValue::from_static("Origin")),
+                    ]
+                ).into_response());
+            } else {
+                tracing::warn!("Blocked pre-flight request from unauthorized origin: {}", origin_value);
+                return Err(AppError::Forbidden);
+            }
+        }
+        // No origin header - allow OPTIONS without CORS headers
+        return Ok(StatusCode::OK.into_response());
+    }
+
+    // Check if origin is allowed for non-OPTIONS requests
+    if let Some(origin_value) = origin {
+        let is_allowed = state.config.security.allowed_origins.iter().any(|allowed| {
+            // Support wildcard subdomains
+            if allowed.starts_with("*.") {
+                let domain = &allowed[2..];
+                origin_value.ends_with(domain)
+            } else {
+                origin_value == allowed
+            }
+        });
+
+        if !is_allowed {
+            tracing::warn!("Blocked request from unauthorized origin: {}", origin_value);
+            return Err(AppError::Forbidden);
+        }
+    }
+
+    let mut response = next.run(request).await;
+
+    // Add CORS headers for allowed origins
+    if let Some(origin_value) = origin {
+        let headers = response.headers_mut();
+        headers.insert(
+            header::ACCESS_CONTROL_ALLOW_ORIGIN,
+            HeaderValue::from_str(origin_value).unwrap(),
+        );
+        headers.insert(
+            header::ACCESS_CONTROL_ALLOW_CREDENTIALS,
+            HeaderValue::from_static("true"),
+        );
+        headers.insert(
+            header::ACCESS_CONTROL_ALLOW_METHODS,
+            HeaderValue::from_static("GET, POST, PUT, DELETE, PATCH, OPTIONS"),
+        );
+        headers.insert(
+            header::ACCESS_CONTROL_ALLOW_HEADERS,
+            HeaderValue::from_static("Content-Type, Authorization, X-Requested-With, X-CSRF-Token"),
+        );
+        headers.insert(
+            header::ACCESS_CONTROL_EXPOSE_HEADERS,
+            HeaderValue::from_static("Content-Length, Content-Type"),
+        );
+        headers.insert(
+            header::ACCESS_CONTROL_MAX_AGE,
+            HeaderValue::from_static("86400"), // 24 hours
+        );
+        headers.insert(
+            header::VARY,
+            HeaderValue::from_static("Origin"),
+        );
+    }
+
+    Ok(response)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use axum::body::Body;
+    use axum::http::Request;
+
+    #[tokio::test]
+    async fn test_security_headers_added() {
+        // Test that security headers are properly added
+        // This is a placeholder - full implementation would require test setup
+    }
+
+    #[tokio::test]
+    async fn test_https_enforcement() {
+        // Test that HTTP requests are redirected to HTTPS
+        // This is a placeholder - full implementation would require test setup
+    }
+
+    #[tokio::test]
+    async fn test_cors_validation() {
+        // Test that CORS policies are enforced
+        // This is a placeholder - full implementation would require test setup
+    }
+}
diff --git a/backend/src/models.rs b/backend/src/models.rs
new file mode 100644
index 00000000..2fa2e9d7
--- /dev/null
+++ b/backend/src/models.rs
@@ -0,0 +1,225 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+pub mod analytics;
+pub mod batch;
+pub mod carbon;
+pub mod digital_twin;
+pub mod collaboration;
+
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct Product {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<String>,
+    pub media_hashes: Vec<String>,
+    pub custom_fields: serde_json::Value,
+    pub owner_address: String,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub created_by: String,
+    pub updated_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct TrackingEvent {
+    pub id: i64,
+    pub product_id: String,
+    pub actor_address: String,
+    pub timestamp: DateTime<Utc>,
+    pub event_type: String,
+    pub location: String,
+    pub data_hash: String,
+    pub note: String,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct Recall {
+    pub id: Uuid,
+    pub product_id: String,
+    pub batch_id: Option<String>,
+    pub title: String,
+    pub reason: String,
+    pub severity: String,
+    pub status: String,
+    pub trigger_type: String,
+    pub triggered_by: Option<String>,
+    pub triggered_event_id: Option<i64>,
+    pub started_at: DateTime<Utc>,
+    pub closed_at: Option<DateTime<Utc>>,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct RecallAffectedItem {
+    pub id: Uuid,
+    pub recall_id: Uuid,
+    pub product_id: String,
+    pub batch_id: Option<String>,
+    pub stakeholder_role: Option<String>,
+    pub stakeholder_address: Option<String>,
+    pub detected_via: String,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct RecallNotification {
+    pub id: Uuid,
+    pub recall_id: Uuid,
+    pub recipient: String,
+    pub channel: String,
+    pub status: String,
+    pub sent_at: Option<DateTime<Utc>>,
+    pub acknowledged_at: Option<DateTime<Utc>>,
+    pub payload: serde_json::Value,
+    pub error: Option<String>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct RecallEffectiveness {
+    pub recall_id: Uuid,
+    pub affected_count: i32,
+    pub notified_count: i32,
+    pub acknowledged_count: i32,
+    pub recovered_count: i32,
+    pub disposed_count: i32,
+    pub last_updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type, ToSchema)]
+#[sqlx(type_name = "text", rename_all = "lowercase")]
+#[serde(rename_all = "lowercase")]
+pub enum UserRole {
+    Supplier,
+    Carrier,
+    Inspector,
+    Customer,
+    Administrator,
+    Auditor,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct User {
+    pub id: Uuid,
+    pub email: String,
+    pub password_hash: String,
+    pub stellar_address: Option<String>,
+    pub role: UserRole,
+    pub api_key: Option<String>,
+    pub api_key_hash: Option<String>,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub last_login_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct ApiKey {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub key_hash: String,
+    pub name: String,
+    pub tier: ApiKeyTier,
+    pub rate_limit_per_minute: i32,
+    pub is_active: bool,
+    pub expires_at: Option<DateTime<Utc>>,
+    pub last_used_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type, ToSchema)]
+#[sqlx(type_name = "text")]
+pub enum ApiKeyTier {
+    Basic,
+    Standard,
+    Premium,
+    Enterprise,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct Webhook {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub url: String,
+    pub secret: String,
+    pub events: Vec<String>,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct ProductStats {
+    pub product_id: String,
+    pub event_count: i64,
+    pub is_active: bool,
+    pub last_event_at: Option<DateTime<Utc>>,
+    pub last_event_type: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewProduct {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<String>,
+    pub media_hashes: Vec<String>,
+    pub custom_fields: serde_json::Value,
+    pub owner_address: String,
+    pub created_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewTrackingEvent {
+    pub product_id: String,
+    pub actor_address: String,
+    pub timestamp: DateTime<Utc>,
+    pub event_type: String,
+    pub location: String,
+    pub data_hash: String,
+    pub note: String,
+    pub metadata: serde_json::Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewUser {
+    pub email: String,
+    pub password_hash: String,
+    pub stellar_address: Option<String>,
+    pub role: UserRole,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewApiKey {
+    pub user_id: Uuid,
+    pub key_hash: String,
+    pub name: String,
+    pub tier: ApiKeyTier,
+    pub rate_limit_per_minute: i32,
+    pub expires_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewWebhook {
+    pub user_id: Uuid,
+    pub url: String,
+    pub secret: String,
+    pub events: Vec<String>,
+}
\ No newline at end of file
diff --git a/backend/src/models/analytics.rs b/backend/src/models/analytics.rs
new file mode 100644
index 00000000..ffc16f23
--- /dev/null
+++ b/backend/src/models/analytics.rs
@@ -0,0 +1,164 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+
+// --- Dashboard Analytics ---
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DashboardMetrics {
+    pub total_products: i64,
+    pub active_products: i64,
+    pub inactive_products: i64,
+    pub total_events: i64,
+    pub total_users: i64,
+    pub events_last_24h: i64,
+    pub events_last_7d: i64,
+    pub events_last_30d: i64,
+    pub products_registered_last_30d: i64,
+    pub top_event_types: Vec<EventTypeCount>,
+    pub top_categories: Vec<CategoryCount>,
+    pub generated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct EventTypeCount {
+    pub event_type: String,
+    pub count: i64,
+    pub percentage: f64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct CategoryCount {
+    pub category: String,
+    pub count: i64,
+    pub active_count: i64,
+}
+
+// --- Product Analytics ---
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ProductAnalytics {
+    pub product_id: String,
+    pub product_name: String,
+    pub category: String,
+    pub is_active: bool,
+    pub total_events: i64,
+    pub unique_actors: i64,
+    pub unique_locations: i64,
+    pub first_event_at: Option<DateTime<Utc>>,
+    pub last_event_at: Option<DateTime<Utc>>,
+    pub lifecycle_days: Option<i64>,
+    pub event_type_breakdown: Vec<EventTypeCount>,
+    pub event_time_series: Vec<TimeSeriesPoint>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TimeSeriesPoint {
+    pub date: String, // ISO date string YYYY-MM-DD
+    pub count: i64,
+}
+
+// --- Event Analytics ---
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct EventAnalytics {
+    pub total_events: i64,
+    pub events_by_type: Vec<EventTypeCount>,
+    pub events_by_location: Vec<LocationCount>,
+    pub events_by_actor: Vec<ActorCount>,
+    pub hourly_distribution: Vec<HourlyCount>,
+    pub daily_time_series: Vec<TimeSeriesPoint>,
+    pub avg_events_per_product: f64,
+    pub most_active_products: Vec<ProductEventCount>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct LocationCount {
+    pub location: String,
+    pub count: i64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ActorCount {
+    pub actor_address: String,
+    pub count: i64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct HourlyCount {
+    pub hour: i32,
+    pub count: i64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ProductEventCount {
+    pub product_id: String,
+    pub product_name: String,
+    pub event_count: i64,
+}
+
+// --- User Analytics ---
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct UserAnalytics {
+    pub total_users: i64,
+    pub active_users: i64,
+    pub users_with_stellar: i64,
+    pub new_users_last_30d: i64,
+    pub total_api_keys: i64,
+    pub active_api_keys: i64,
+    pub api_keys_by_tier: Vec<ApiKeyTierCount>,
+    pub user_registration_series: Vec<TimeSeriesPoint>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ApiKeyTierCount {
+    pub tier: String,
+    pub count: i64,
+}
+
+// --- Time Series Query Params ---
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct TimeSeriesQuery {
+    pub start_date: Option<DateTime<Utc>>,
+    pub end_date: Option<DateTime<Utc>>,
+    pub granularity: Option<String>, // "day", "week", "month"
+    pub product_id: Option<String>,
+    pub event_type: Option<String>,
+    pub category: Option<String>,
+}
+
+// --- Export ---
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct ExportQuery {
+    pub format: Option<String>, // "csv" or "json"
+    pub start_date: Option<DateTime<Utc>>,
+    pub end_date: Option<DateTime<Utc>>,
+    pub product_id: Option<String>,
+    pub event_type: Option<String>,
+    pub limit: Option<i64>,
+}
+
+// --- Cache key helpers ---
+
+#[derive(Debug, Clone)]
+pub struct CacheKey;
+
+impl CacheKey {
+    pub fn dashboard() -> &'static str {
+        "analytics:dashboard"
+    }
+
+    pub fn event_analytics(start: &str, end: &str) -> String {
+        format!("analytics:events:{}:{}", start, end)
+    }
+
+    pub fn user_analytics() -> &'static str {
+        "analytics:users"
+    }
+
+    pub fn product_analytics(product_id: &str) -> String {
+        format!("analytics:product:{}", product_id)
+    }
+}
diff --git a/backend/src/models/batch.rs b/backend/src/models/batch.rs
new file mode 100644
index 00000000..f3405d45
--- /dev/null
+++ b/backend/src/models/batch.rs
@@ -0,0 +1,185 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type, ToSchema)]
+#[sqlx(type_name = "batch_status", rename_all = "lowercase")]
+#[serde(rename_all = "lowercase")]
+pub enum BatchStatus {
+    Pending,
+    InProduction,
+    Completed,
+    QualityCheck,
+    Quarantined,
+    Shipped,
+    Recalled,
+    Disposed,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct Batch {
+    pub id: Uuid,
+    pub batch_number: String,
+    pub product_id: String,
+    pub lot_number: Option<String>,
+    pub production_date: DateTime<Utc>,
+    pub expiry_date: Option<DateTime<Utc>>,
+    pub quantity_produced: i32,
+    pub quantity_available: i32,
+    pub status: BatchStatus,
+    pub production_location: String,
+    pub quality_grade: Option<String>,
+    pub quality_score: Option<rust_decimal::Decimal>,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub created_by: String,
+    pub updated_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewBatch {
+    pub batch_number: String,
+    pub product_id: String,
+    pub lot_number: Option<String>,
+    pub production_date: DateTime<Utc>,
+    pub expiry_date: Option<DateTime<Utc>>,
+    pub quantity_produced: i32,
+    pub quantity_available: i32,
+    pub status: BatchStatus,
+    pub production_location: String,
+    pub quality_grade: Option<String>,
+    pub quality_score: Option<rust_decimal::Decimal>,
+    pub metadata: serde_json::Value,
+    pub created_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct BatchGenealogy {
+    pub id: Uuid,
+    pub parent_batch_id: Uuid,
+    pub child_batch_id: Uuid,
+    pub relationship_type: String,
+    pub quantity_transferred: i32,
+    pub transfer_date: DateTime<Utc>,
+    pub notes: Option<String>,
+    pub metadata: serde_json::Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewBatchGenealogy {
+    pub parent_batch_id: Uuid,
+    pub child_batch_id: Uuid,
+    pub relationship_type: String,
+    pub quantity_transferred: i32,
+    pub notes: Option<String>,
+    pub metadata: serde_json::Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct BatchQualityAttribute {
+    pub id: Uuid,
+    pub batch_id: Uuid,
+    pub attribute_name: String,
+    pub attribute_value: String,
+    pub measurement_unit: Option<String>,
+    pub tolerance_min: Option<rust_decimal::Decimal>,
+    pub tolerance_max: Option<rust_decimal::Decimal>,
+    pub measured_at: DateTime<Utc>,
+    pub measured_by: String,
+    pub is_within_tolerance: bool,
+    pub notes: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewBatchQualityAttribute {
+    pub batch_id: Uuid,
+    pub attribute_name: String,
+    pub attribute_value: String,
+    pub measurement_unit: Option<String>,
+    pub tolerance_min: Option<rust_decimal::Decimal>,
+    pub tolerance_max: Option<rust_decimal::Decimal>,
+    pub measured_by: String,
+    pub notes: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct BatchRecall {
+    pub id: Uuid,
+    pub batch_id: Uuid,
+    pub recall_type: String,
+    pub recall_reason: String,
+    pub recall_date: DateTime<Utc>,
+    pub initiated_by: String,
+    pub severity: String,
+    pub status: String,
+    pub affected_quantity: i32,
+    pub recovered_quantity: i32,
+    pub notification_sent: bool,
+    pub public_announcement: bool,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewBatchRecall {
+    pub batch_id: Uuid,
+    pub recall_type: String,
+    pub recall_reason: String,
+    pub initiated_by: String,
+    pub severity: String,
+    pub affected_quantity: i32,
+    pub metadata: serde_json::Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct BatchInventory {
+    pub id: Uuid,
+    pub batch_id: Uuid,
+    pub location_id: String,
+    pub quantity: i32,
+    pub transaction_type: String,
+    pub reference_id: Option<String>,
+    pub transaction_date: DateTime<Utc>,
+    pub performed_by: String,
+    pub notes: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewBatchInventory {
+    pub batch_id: Uuid,
+    pub location_id: String,
+    pub quantity: i32,
+    pub transaction_type: String,
+    pub reference_id: Option<String>,
+    pub performed_by: String,
+    pub notes: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct BatchFilters {
+    pub product_id: Option<String>,
+    pub lot_number: Option<String>,
+    pub status: Option<BatchStatus>,
+    pub quality_grade: Option<String>,
+    pub production_after: Option<DateTime<Utc>>,
+    pub production_before: Option<DateTime<Utc>>,
+    pub expiry_after: Option<DateTime<Utc>>,
+    pub expiry_before: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct BatchGenealogyTree {
+    pub batch: Batch,
+    pub parents: Vec<BatchGenealogyNode>,
+    pub children: Vec<BatchGenealogyNode>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct BatchGenealogyNode {
+    pub genealogy: BatchGenealogy,
+    pub related_batch: Batch,
+}
diff --git a/backend/src/models/carbon.rs b/backend/src/models/carbon.rs
new file mode 100644
index 00000000..29591697
--- /dev/null
+++ b/backend/src/models/carbon.rs
@@ -0,0 +1,220 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+
+// ── DB row types ──────────────────────────────────────────────────────────────
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct CarbonFootprint {
+    pub id: Uuid,
+    pub product_id: String,
+    pub tracking_event_id: Option<i64>,
+    pub calculation_method: String,
+    pub transport_emissions: f64,
+    pub manufacturing_emissions: f64,
+    pub packaging_emissions: f64,
+    pub storage_emissions: f64,
+    pub total_emissions: f64,
+    pub baseline_emissions: Option<f64>,
+    pub emissions_reduction: Option<f64>,
+    pub reduction_percentage: Option<f64>,
+    pub distance_km: Option<f64>,
+    pub transport_mode: Option<String>,
+    pub energy_source: Option<String>,
+    pub raw_data: serde_json::Value,
+    pub calculated_at: DateTime<Utc>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct CarbonCredit {
+    pub id: Uuid,
+    pub owner_id: Uuid,
+    pub product_id: Option<String>,
+    pub serial_number: String,
+    pub vintage_year: i32,
+    pub credit_type: String,
+    pub standard: String,
+    pub quantity: f64,
+    pub price_per_tonne: Option<f64>,
+    pub status: String,
+    pub registry_id: Option<String>,
+    pub registry_url: Option<String>,
+    pub verification_body: Option<String>,
+    pub verified_at: Option<DateTime<Utc>>,
+    pub retired_at: Option<DateTime<Utc>>,
+    pub retirement_reason: Option<String>,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct CarbonTrade {
+    pub id: Uuid,
+    pub credit_id: Uuid,
+    pub seller_id: Uuid,
+    pub buyer_id: Option<Uuid>,
+    pub quantity: f64,
+    pub price_per_tonne: f64,
+    pub total_amount: f64,
+    pub currency: String,
+    pub status: String,
+    pub trade_type: String,
+    pub settlement_date: Option<DateTime<Utc>>,
+    pub blockchain_tx_hash: Option<String>,
+    pub platform_fee: Option<f64>,
+    pub notes: Option<String>,
+    pub expires_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct CarbonVerification {
+    pub id: Uuid,
+    pub credit_id: Uuid,
+    pub requested_by: Uuid,
+    pub verifier_name: String,
+    pub verifier_accreditation: Option<String>,
+    pub status: String,
+    pub methodology: Option<String>,
+    pub scope: Option<String>,
+    pub findings: serde_json::Value,
+    pub certificate_url: Option<String>,
+    pub submitted_at: Option<DateTime<Utc>>,
+    pub completed_at: Option<DateTime<Utc>>,
+    pub expires_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct CarbonReport {
+    pub id: Uuid,
+    pub owner_id: Uuid,
+    pub report_type: String,
+    pub period_start: DateTime<Utc>,
+    pub period_end: DateTime<Utc>,
+    pub total_emissions: f64,
+    pub total_reductions: f64,
+    pub net_emissions: f64,
+    pub credits_generated: f64,
+    pub credits_retired: f64,
+    pub credits_sold: f64,
+    pub revenue_from_credits: f64,
+    pub summary: serde_json::Value,
+    pub generated_at: DateTime<Utc>,
+    pub created_at: DateTime<Utc>,
+}
+
+// ── Request / input types ─────────────────────────────────────────────────────
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct CalculateFootprintRequest {
+    pub product_id: String,
+    pub tracking_event_id: Option<i64>,
+    pub transport_mode: Option<String>,
+    pub distance_km: Option<f64>,
+    pub energy_source: Option<String>,
+    pub weight_kg: Option<f64>,
+    pub packaging_type: Option<String>,
+    pub storage_hours: Option<f64>,
+    pub baseline_emissions: Option<f64>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct GenerateCreditRequest {
+    pub product_id: Option<String>,
+    pub footprint_id: Uuid,
+    pub vintage_year: i32,
+    pub credit_type: Option<String>,
+    pub standard: Option<String>,
+    pub price_per_tonne: Option<f64>,
+    pub registry_id: Option<String>,
+    pub verification_body: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct CreateTradeRequest {
+    pub credit_id: Uuid,
+    pub quantity: f64,
+    pub price_per_tonne: f64,
+    pub trade_type: Option<String>,
+    pub notes: Option<String>,
+    pub expires_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct PurchaseCreditRequest {
+    pub trade_id: Uuid,
+    pub quantity: f64,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct RetireCreditRequest {
+    pub credit_id: Uuid,
+    pub reason: String,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct RequestVerificationRequest {
+    pub credit_id: Uuid,
+    pub verifier_name: String,
+    pub verifier_accreditation: Option<String>,
+    pub methodology: Option<String>,
+    pub scope: Option<String>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct GenerateReportRequest {
+    pub report_type: Option<String>,
+    pub period_start: DateTime<Utc>,
+    pub period_end: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct ListTradesQuery {
+    pub status: Option<String>,
+    pub trade_type: Option<String>,
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct ListCreditsQuery {
+    pub status: Option<String>,
+    pub vintage_year: Option<i32>,
+    pub standard: Option<String>,
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+}
+
+// ── Calculation result ────────────────────────────────────────────────────────
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FootprintBreakdown {
+    pub transport_emissions: f64,
+    pub manufacturing_emissions: f64,
+    pub packaging_emissions: f64,
+    pub storage_emissions: f64,
+    pub total_emissions: f64,
+    pub emissions_reduction: Option<f64>,
+    pub reduction_percentage: Option<f64>,
+    pub eligible_credits: f64, // tonnes CO2e eligible for credit generation
+}
+
+// ── Market summary ────────────────────────────────────────────────────────────
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct MarketSummary {
+    pub total_credits_available: f64,
+    pub total_credits_listed: f64,
+    pub total_credits_sold: f64,
+    pub total_credits_retired: f64,
+    pub avg_price_per_tonne: f64,
+    pub total_market_volume_usd: f64,
+    pub open_trades: i64,
+    pub recent_trades: Vec<CarbonTrade>,
+}
diff --git a/backend/src/models/collaboration.rs b/backend/src/models/collaboration.rs
new file mode 100644
index 00000000..097a4834
--- /dev/null
+++ b/backend/src/models/collaboration.rs
@@ -0,0 +1,52 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct ProductShare {
+    pub id: Uuid,
+    pub product_id: String,
+    pub shared_with_user_id: Uuid,
+    pub permission_level: String,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct CollaborationRequest {
+    pub id: Uuid,
+    pub product_id: String,
+    pub requester_id: Uuid,
+    pub status: String,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct CollaborationAuditTrail {
+    pub id: Uuid,
+    pub actor_id: Option<Uuid>,
+    pub action: String,
+    pub entity_type: String,
+    pub entity_id: String,
+    pub details: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct ShareProductRequest {
+    pub product_id: String,
+    pub shared_with_user_id: Uuid,
+    pub permission_level: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct CreateCollaborationRequest {
+    pub product_id: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct UpdateCollaborationRequest {
+    pub status: String,
+}
diff --git a/backend/src/models/digital_twin.rs b/backend/src/models/digital_twin.rs
new file mode 100644
index 00000000..c1aad555
--- /dev/null
+++ b/backend/src/models/digital_twin.rs
@@ -0,0 +1,218 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+
+/// Digital Twin represents a virtual replica of a physical supply chain entity
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct DigitalTwin {
+    pub id: Uuid,
+    pub product_id: String,
+    pub twin_type: TwinType,
+    pub name: String,
+    pub description: String,
+    pub current_state: serde_json::Value,
+    pub metadata: serde_json::Value,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub last_sync_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type)]
+#[sqlx(type_name = "text")]
+pub enum TwinType {
+    Product,
+    Warehouse,
+    Vehicle,
+    Container,
+    Facility,
+}
+
+/// Simulation represents a what-if scenario for supply chain optimization
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct Simulation {
+    pub id: Uuid,
+    pub twin_id: Uuid,
+    pub name: String,
+    pub description: String,
+    pub simulation_type: SimulationType,
+    pub parameters: serde_json::Value,
+    pub status: SimulationStatus,
+    pub results: Option<serde_json::Value>,
+    pub started_at: Option<DateTime<Utc>>,
+    pub completed_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub created_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type)]
+#[sqlx(type_name = "text")]
+pub enum SimulationType {
+    RouteOptimization,
+    DemandForecasting,
+    InventoryOptimization,
+    RiskAssessment,
+    CostAnalysis,
+    TimelineProjection,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type)]
+#[sqlx(type_name = "text")]
+pub enum SimulationStatus {
+    Pending,
+    Running,
+    Completed,
+    Failed,
+    Cancelled,
+}
+
+/// TwinState captures the state of a digital twin at a specific point in time
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct TwinState {
+    pub id: Uuid,
+    pub twin_id: Uuid,
+    pub state_data: serde_json::Value,
+    pub metrics: serde_json::Value,
+    pub timestamp: DateTime<Utc>,
+    pub source: String,
+}
+
+/// Prediction represents AI/ML-based predictions for supply chain events
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct Prediction {
+    pub id: Uuid,
+    pub twin_id: Uuid,
+    pub prediction_type: PredictionType,
+    pub predicted_value: serde_json::Value,
+    pub confidence_score: f64,
+    pub prediction_horizon: i32, // hours
+    pub created_at: DateTime<Utc>,
+    pub valid_until: DateTime<Utc>,
+    pub actual_value: Option<serde_json::Value>,
+    pub accuracy_score: Option<f64>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type)]
+#[sqlx(type_name = "text")]
+pub enum PredictionType {
+    ArrivalTime,
+    Delay,
+    QualityIssue,
+    DemandSpike,
+    SupplyDisruption,
+    CostOverrun,
+}
+
+/// Optimization represents optimization recommendations
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct Optimization {
+    pub id: Uuid,
+    pub twin_id: Uuid,
+    pub optimization_type: OptimizationType,
+    pub current_metrics: serde_json::Value,
+    pub optimized_metrics: serde_json::Value,
+    pub recommendations: Vec<String>,
+    pub estimated_savings: Option<f64>,
+    pub implementation_complexity: ComplexityLevel,
+    pub created_at: DateTime<Utc>,
+    pub applied_at: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type)]
+#[sqlx(type_name = "text")]
+pub enum OptimizationType {
+    Route,
+    Inventory,
+    Cost,
+    Time,
+    Carbon,
+    Risk,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, sqlx::Type)]
+#[sqlx(type_name = "text")]
+pub enum ComplexityLevel {
+    Low,
+    Medium,
+    High,
+}
+
+/// TwinMetrics aggregates key performance indicators for a digital twin
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TwinMetrics {
+    pub twin_id: Uuid,
+    pub total_events: i64,
+    pub avg_transit_time: Option<f64>,
+    pub on_time_delivery_rate: Option<f64>,
+    pub quality_score: Option<f64>,
+    pub cost_efficiency: Option<f64>,
+    pub carbon_footprint: Option<f64>,
+    pub risk_score: Option<f64>,
+    pub last_updated: DateTime<Utc>,
+}
+
+// Request/Response DTOs
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct CreateDigitalTwinRequest {
+    pub product_id: String,
+    pub twin_type: TwinType,
+    pub name: String,
+    pub description: String,
+    pub initial_state: serde_json::Value,
+    pub metadata: serde_json::Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct UpdateTwinStateRequest {
+    pub state_data: serde_json::Value,
+    pub metrics: serde_json::Value,
+    pub source: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct CreateSimulationRequest {
+    pub twin_id: Uuid,
+    pub name: String,
+    pub description: String,
+    pub simulation_type: SimulationType,
+    pub parameters: serde_json::Value,
+    pub created_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct SimulationResult {
+    pub simulation_id: Uuid,
+    pub status: SimulationStatus,
+    pub results: Option<serde_json::Value>,
+    pub execution_time_ms: Option<i64>,
+    pub insights: Vec<String>,
+    pub recommendations: Vec<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TwinAnalytics {
+    pub twin_id: Uuid,
+    pub metrics: TwinMetrics,
+    pub recent_predictions: Vec<Prediction>,
+    pub active_optimizations: Vec<Optimization>,
+    pub simulation_count: i64,
+    pub state_history_count: i64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct OptimizationRequest {
+    pub twin_id: Uuid,
+    pub optimization_type: OptimizationType,
+    pub constraints: serde_json::Value,
+    pub objectives: Vec<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PredictionRequest {
+    pub twin_id: Uuid,
+    pub prediction_type: PredictionType,
+    pub prediction_horizon: i32,
+    pub input_features: serde_json::Value,
+}
diff --git a/backend/src/models/iot.rs b/backend/src/models/iot.rs
new file mode 100644
index 00000000..bf99f239
--- /dev/null
+++ b/backend/src/models/iot.rs
@@ -0,0 +1,157 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+use rust_decimal::Decimal;
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct IoTDevice {
+    pub id: Uuid,
+    pub device_id: String,
+    pub device_type: String,
+    pub product_id: Option<String>,
+    pub name: String,
+    pub description: Option<String>,
+    pub manufacturer: Option<String>,
+    pub model: Option<String>,
+    pub serial_number: Option<String>,
+    pub firmware_version: Option<String>,
+    pub location: Option<String>,
+    pub is_active: bool,
+    pub last_seen_at: Option<DateTime<Utc>>,
+    pub calibration_date: Option<DateTime<Utc>>,
+    pub next_calibration_date: Option<DateTime<Utc>>,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewIoTDevice {
+    pub device_id: String,
+    pub device_type: String,
+    pub product_id: Option<String>,
+    pub name: String,
+    pub description: Option<String>,
+    pub manufacturer: Option<String>,
+    pub model: Option<String>,
+    pub serial_number: Option<String>,
+    pub firmware_version: Option<String>,
+    pub location: Option<String>,
+    pub metadata: Option<serde_json::Value>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct TemperatureReading {
+    pub id: Uuid,
+    pub device_id: String,
+    pub product_id: Option<String>,
+    pub temperature_celsius: Decimal,
+    pub humidity_percent: Option<Decimal>,
+    pub unit: String,
+    pub reading_timestamp: DateTime<Utc>,
+    pub received_at: DateTime<Utc>,
+    pub location: Option<String>,
+    pub quality_score: Option<Decimal>,
+    pub is_anomaly: bool,
+    pub anomaly_reason: Option<String>,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewTemperatureReading {
+    pub device_id: String,
+    pub product_id: Option<String>,
+    pub temperature_celsius: Decimal,
+    pub humidity_percent: Option<Decimal>,
+    pub unit: String,
+    pub reading_timestamp: DateTime<Utc>,
+    pub location: Option<String>,
+    pub quality_score: Option<Decimal>,
+    pub metadata: Option<serde_json::Value>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct TemperatureThreshold {
+    pub id: Uuid,
+    pub product_id: String,
+    pub device_id: Option<String>,
+    pub threshold_type: String,
+    pub min_temperature_celsius: Option<Decimal>,
+    pub max_temperature_celsius: Option<Decimal>,
+    pub duration_minutes: Option<i32>,
+    pub alert_level: String,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewTemperatureThreshold {
+    pub product_id: String,
+    pub device_id: Option<String>,
+    pub threshold_type: String,
+    pub min_temperature_celsius: Option<Decimal>,
+    pub max_temperature_celsius: Option<Decimal>,
+    pub duration_minutes: Option<i32>,
+    pub alert_level: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct TemperatureAlert {
+    pub id: Uuid,
+    pub device_id: String,
+    pub product_id: String,
+    pub threshold_id: Option<Uuid>,
+    pub alert_type: String,
+    pub alert_level: String,
+    pub temperature_celsius: Option<Decimal>,
+    pub threshold_value: Option<Decimal>,
+    pub message: String,
+    pub is_resolved: bool,
+    pub resolved_at: Option<DateTime<Utc>>,
+    pub resolved_by: Option<String>,
+    pub acknowledged_by: Option<String>,
+    pub acknowledged_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewTemperatureAlert {
+    pub device_id: String,
+    pub product_id: String,
+    pub threshold_id: Option<Uuid>,
+    pub alert_type: String,
+    pub alert_level: String,
+    pub temperature_celsius: Option<Decimal>,
+    pub threshold_value: Option<Decimal>,
+    pub message: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct TemperatureSummary {
+    pub id: Uuid,
+    pub device_id: String,
+    pub product_id: Option<String>,
+    pub summary_period: String,
+    pub period_start: DateTime<Utc>,
+    pub period_end: DateTime<Utc>,
+    pub avg_temperature_celsius: Option<Decimal>,
+    pub min_temperature_celsius: Option<Decimal>,
+    pub max_temperature_celsius: Option<Decimal>,
+    pub total_readings: Option<i32>,
+    pub anomaly_count: Option<i32>,
+    pub alert_count: Option<i32>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct TemperatureHistoryQuery {
+    pub device_id: Option<String>,
+    pub product_id: Option<String>,
+    pub start_time: Option<DateTime<Utc>>,
+    pub end_time: Option<DateTime<Utc>>,
+    pub include_anomalies_only: Option<bool>,
+}
diff --git a/backend/src/models/quality.rs b/backend/src/models/quality.rs
new file mode 100644
index 00000000..0decc508
--- /dev/null
+++ b/backend/src/models/quality.rs
@@ -0,0 +1,179 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+use rust_decimal::Decimal;
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct QCCheckpoint {
+    pub id: Uuid,
+    pub checkpoint_id: String,
+    pub name: String,
+    pub description: Option<String>,
+    pub checkpoint_type: String,
+    pub category: String,
+    pub product_category: Option<String>,
+    pub required_fields: serde_json::Value,
+    pub acceptance_criteria: serde_json::Value,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewQCCheckpoint {
+    pub checkpoint_id: String,
+    pub name: String,
+    pub description: Option<String>,
+    pub checkpoint_type: String,
+    pub category: String,
+    pub product_category: Option<String>,
+    pub required_fields: serde_json::Value,
+    pub acceptance_criteria: serde_json::Value,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct QCWorkflow {
+    pub id: Uuid,
+    pub workflow_id: String,
+    pub name: String,
+    pub description: Option<String>,
+    pub product_category: Option<String>,
+    pub checkpoint_ids: Vec<String>,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewQCWorkflow {
+    pub workflow_id: String,
+    pub name: String,
+    pub description: Option<String>,
+    pub product_category: Option<String>,
+    pub checkpoint_ids: Vec<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct QCInspection {
+    pub id: Uuid,
+    pub inspection_id: String,
+    pub product_id: String,
+    pub checkpoint_id: String,
+    pub workflow_id: Option<String>,
+    pub status: String,
+    pub inspector_id: Option<String>,
+    pub inspection_date: Option<DateTime<Utc>>,
+    pub location: Option<String>,
+    pub results: serde_json::Value,
+    pub quality_metrics: serde_json::Value,
+    pub notes: Option<String>,
+    pub evidence_documents: Vec<String>,
+    pub is_passed: Option<bool>,
+    pub failure_reason: Option<String>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewQCInspection {
+    pub inspection_id: String,
+    pub product_id: String,
+    pub checkpoint_id: String,
+    pub workflow_id: Option<String>,
+    pub inspector_id: Option<String>,
+    pub location: Option<String>,
+    pub results: serde_json::Value,
+    pub quality_metrics: serde_json::Value,
+    pub notes: Option<String>,
+    pub evidence_documents: Vec<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct NonConformance {
+    pub id: Uuid,
+    pub nc_id: String,
+    pub inspection_id: Option<Uuid>,
+    pub product_id: String,
+    pub severity: String,
+    pub category: String,
+    pub description: String,
+    pub root_cause: Option<String>,
+    pub correction_action: Option<String>,
+    pub correction_status: String,
+    pub responsible_party: Option<String>,
+    pub due_date: Option<DateTime<Utc>>,
+    pub resolved_at: Option<DateTime<Utc>>,
+    pub verified_by: Option<String>,
+    pub verified_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewNonConformance {
+    pub nc_id: String,
+    pub inspection_id: Option<Uuid>,
+    pub product_id: String,
+    pub severity: String,
+    pub category: String,
+    pub description: String,
+    pub root_cause: Option<String>,
+    pub correction_action: Option<String>,
+    pub responsible_party: Option<String>,
+    pub due_date: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct QualityMetric {
+    pub id: Uuid,
+    pub metric_id: String,
+    pub product_id: Option<String>,
+    pub metric_type: String,
+    pub metric_value: Decimal,
+    pub unit: Option<String>,
+    pub measurement_period_start: DateTime<Utc>,
+    pub measurement_period_end: DateTime<Utc>,
+    pub target_value: Option<Decimal>,
+    pub threshold_min: Option<Decimal>,
+    pub threshold_max: Option<Decimal>,
+    pub is_within_threshold: Option<bool>,
+    pub notes: Option<String>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewQualityMetric {
+    pub metric_id: String,
+    pub product_id: Option<String>,
+    pub metric_type: String,
+    pub metric_value: Decimal,
+    pub unit: Option<String>,
+    pub measurement_period_start: DateTime<Utc>,
+    pub measurement_period_end: DateTime<Utc>,
+    pub target_value: Option<Decimal>,
+    pub threshold_min: Option<Decimal>,
+    pub threshold_max: Option<Decimal>,
+    pub notes: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct WorkflowExecutionRequest {
+    pub product_id: String,
+    pub workflow_id: String,
+    pub inspector_id: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct WorkflowExecutionResult {
+    pub workflow_id: String,
+    pub product_id: String,
+    pub total_checkpoints: i32,
+    pub completed: i32,
+    pub passed: i32,
+    pub failed: i32,
+    pub skipped: i32,
+    pub overall_status: String,
+    pub inspections: Vec<QCInspection>,
+}
diff --git a/backend/src/models/regulatory.rs b/backend/src/models/regulatory.rs
new file mode 100644
index 00000000..f2382945
--- /dev/null
+++ b/backend/src/models/regulatory.rs
@@ -0,0 +1,148 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct RegulatoryRequirement {
+    pub id: Uuid,
+    pub requirement_id: String,
+    pub name: String,
+    pub description: Option<String>,
+    pub regulation_type: String,
+    pub category: String,
+    pub severity: String,
+    pub required_fields: serde_json::Value,
+    pub validation_logic: Option<String>,
+    pub is_active: bool,
+    pub effective_date: DateTime<Utc>,
+    pub expiry_date: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewRegulatoryRequirement {
+    pub requirement_id: String,
+    pub name: String,
+    pub description: Option<String>,
+    pub regulation_type: String,
+    pub category: String,
+    pub severity: String,
+    pub required_fields: serde_json::Value,
+    pub validation_logic: Option<String>,
+    pub effective_date: Option<DateTime<Utc>>,
+    pub expiry_date: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct ProductCompliance {
+    pub id: Uuid,
+    pub product_id: String,
+    pub requirement_id: String,
+    pub status: String,
+    pub last_checked_at: Option<DateTime<Utc>>,
+    pub last_check_result: Option<serde_json::Value>,
+    pub violations: serde_json::Value,
+    pub warnings: serde_json::Value,
+    pub evidence_documents: Vec<String>,
+    pub notes: Option<String>,
+    pub checked_by: Option<String>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewProductCompliance {
+    pub product_id: String,
+    pub requirement_id: String,
+    pub status: String,
+    pub notes: Option<String>,
+    pub checked_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct ComplianceAuditTrail {
+    pub id: Uuid,
+    pub product_id: String,
+    pub requirement_id: Option<String>,
+    pub action_type: String,
+    pub previous_status: Option<String>,
+    pub new_status: Option<String>,
+    pub action_details: serde_json::Value,
+    pub performed_by: String,
+    pub performed_at: DateTime<Utc>,
+    pub ip_address: Option<String>,
+    pub user_agent: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewComplianceAuditTrail {
+    pub product_id: String,
+    pub requirement_id: Option<String>,
+    pub action_type: String,
+    pub previous_status: Option<String>,
+    pub new_status: Option<String>,
+    pub action_details: serde_json::Value,
+    pub performed_by: String,
+    pub ip_address: Option<String>,
+    pub user_agent: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct ComplianceReport {
+    pub id: Uuid,
+    pub report_id: String,
+    pub report_type: String,
+    pub scope: serde_json::Value,
+    pub generated_by: String,
+    pub generated_at: DateTime<Utc>,
+    pub period_start: Option<DateTime<Utc>>,
+    pub period_end: Option<DateTime<Utc>>,
+    pub total_products_checked: i32,
+    pub compliant_count: i32,
+    pub non_compliant_count: i32,
+    pub pending_count: i32,
+    pub compliance_rate: Option<rust_decimal::Decimal>,
+    pub report_data: serde_json::Value,
+    pub file_path: Option<String>,
+    pub status: String,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewComplianceReport {
+    pub report_type: String,
+    pub scope: serde_json::Value,
+    pub generated_by: String,
+    pub period_start: Option<DateTime<Utc>>,
+    pub period_end: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct ComplianceCheckRequest {
+    pub product_id: String,
+    pub requirement_ids: Option<Vec<String>>,
+    pub performed_by: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct ComplianceCheckResult {
+    pub product_id: String,
+    pub total_requirements: i32,
+    pub compliant: i32,
+    pub non_compliant: i32,
+    pub pending: i32,
+    pub details: Vec<ComplianceDetail>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct ComplianceDetail {
+    pub requirement_id: String,
+    pub requirement_name: String,
+    pub regulation_type: String,
+    pub status: String,
+    pub violations: Vec<String>,
+    pub warnings: Vec<String>,
+}
diff --git a/backend/src/models/supplier.rs b/backend/src/models/supplier.rs
new file mode 100644
index 00000000..7a27e972
--- /dev/null
+++ b/backend/src/models/supplier.rs
@@ -0,0 +1,199 @@
+use chrono::{DateTime, Utc};
+use serde::{Deserialize, Serialize};
+use sqlx::FromRow;
+use uuid::Uuid;
+use utoipa::ToSchema;
+use rust_decimal::Decimal;
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct Supplier {
+    pub id: Uuid,
+    pub supplier_id: String,
+    pub name: String,
+    pub legal_name: Option<String>,
+    pub tax_id: Option<String>,
+    pub registration_number: Option<String>,
+    pub business_type: String,
+    pub tier: String,
+    pub contact_email: String,
+    pub contact_phone: Option<String>,
+    pub address: Option<String>,
+    pub city: Option<String>,
+    pub country: String,
+    pub postal_code: Option<String>,
+    pub website: Option<String>,
+    pub is_verified: bool,
+    pub verification_status: String,
+    pub verification_date: Option<DateTime<Utc>>,
+    pub verified_by: Option<String>,
+    pub certification_expiry: Option<DateTime<Utc>>,
+    pub risk_level: String,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewSupplier {
+    pub supplier_id: String,
+    pub name: String,
+    pub legal_name: Option<String>,
+    pub tax_id: Option<String>,
+    pub registration_number: Option<String>,
+    pub business_type: String,
+    pub tier: String,
+    pub contact_email: String,
+    pub contact_phone: Option<String>,
+    pub address: Option<String>,
+    pub city: Option<String>,
+    pub country: String,
+    pub postal_code: Option<String>,
+    pub website: Option<String>,
+    pub metadata: Option<serde_json::Value>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct SupplierRating {
+    pub id: Uuid,
+    pub supplier_id: String,
+    pub rater_id: String,
+    pub rating_type: String,
+    pub score: Decimal,
+    pub comment: Option<String>,
+    pub rating_period_start: Option<DateTime<Utc>>,
+    pub rating_period_end: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewSupplierRating {
+    pub supplier_id: String,
+    pub rater_id: String,
+    pub rating_type: String,
+    pub score: Decimal,
+    pub comment: Option<String>,
+    pub rating_period_start: Option<DateTime<Utc>>,
+    pub rating_period_end: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct SupplierPerformance {
+    pub id: Uuid,
+    pub supplier_id: String,
+    pub metric_type: String,
+    pub metric_value: Decimal,
+    pub unit: Option<String>,
+    pub measurement_period_start: DateTime<Utc>,
+    pub measurement_period_end: DateTime<Utc>,
+    pub target_value: Option<Decimal>,
+    pub benchmark_value: Option<Decimal>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewSupplierPerformance {
+    pub supplier_id: String,
+    pub metric_type: String,
+    pub metric_value: Decimal,
+    pub unit: Option<String>,
+    pub measurement_period_start: DateTime<Utc>,
+    pub measurement_period_end: DateTime<Utc>,
+    pub target_value: Option<Decimal>,
+    pub benchmark_value: Option<Decimal>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct SupplierCompliance {
+    pub id: Uuid,
+    pub supplier_id: String,
+    pub compliance_type: String,
+    pub certificate_number: Option<String>,
+    pub issuing_authority: Option<String>,
+    pub issue_date: Option<DateTime<Utc>>,
+    pub expiry_date: Option<DateTime<Utc>>,
+    pub status: String,
+    pub document_url: Option<String>,
+    pub verification_notes: Option<String>,
+    pub verified_by: Option<String>,
+    pub verified_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewSupplierCompliance {
+    pub supplier_id: String,
+    pub compliance_type: String,
+    pub certificate_number: Option<String>,
+    pub issuing_authority: Option<String>,
+    pub issue_date: Option<DateTime<Utc>>,
+    pub expiry_date: Option<DateTime<Utc>>,
+    pub document_url: Option<String>,
+    pub verification_notes: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct SupplierProduct {
+    pub id: Uuid,
+    pub supplier_id: String,
+    pub product_id: String,
+    pub is_primary_supplier: bool,
+    pub supply_capacity: Option<i32>,
+    pub lead_time_days: Option<i32>,
+    pub unit_price: Option<Decimal>,
+    pub currency: String,
+    pub min_order_quantity: Option<i32>,
+    pub contract_start_date: Option<DateTime<Utc>>,
+    pub contract_end_date: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct NewSupplierProduct {
+    pub supplier_id: String,
+    pub product_id: String,
+    pub is_primary_supplier: bool,
+    pub supply_capacity: Option<i32>,
+    pub lead_time_days: Option<i32>,
+    pub unit_price: Option<Decimal>,
+    pub currency: String,
+    pub min_order_quantity: Option<i32>,
+    pub contract_start_date: Option<DateTime<Utc>>,
+    pub contract_end_date: Option<DateTime<Utc>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow, ToSchema)]
+pub struct SupplierAuditTrail {
+    pub id: Uuid,
+    pub supplier_id: String,
+    pub action_type: String,
+    pub previous_value: Option<serde_json::Value>,
+    pub new_value: Option<serde_json::Value>,
+    pub performed_by: String,
+    pub performed_at: DateTime<Utc>,
+    pub reason: Option<String>,
+    pub ip_address: Option<String>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct SupplierSummary {
+    pub supplier_id: String,
+    pub name: String,
+    pub tier: String,
+    pub verification_status: String,
+    pub overall_rating: Option<Decimal>,
+    pub total_ratings: i64,
+    pub risk_level: String,
+    pub active_compliance_count: i64,
+    pub total_products: i64,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, ToSchema)]
+pub struct VerificationRequest {
+    pub supplier_id: String,
+    pub verified_by: String,
+    pub verification_status: String,
+    pub notes: Option<String>,
+}
diff --git a/backend/src/monitoring.rs b/backend/src/monitoring.rs
new file mode 100644
index 00000000..a90fdd31
--- /dev/null
+++ b/backend/src/monitoring.rs
@@ -0,0 +1,649 @@
+use std::sync::Arc;
+use std::collections::HashMap;
+use tokio::sync::RwLock;
+use chrono::{DateTime, Utc, Duration};
+use serde::{Deserialize, Serialize};
+use std::time::Instant;
+
+use crate::error::ErrorCode;
+
+/// Error metrics and monitoring
+#[derive(Clone)]
+pub struct ErrorMonitor {
+    metrics: Arc<RwLock<ErrorMetrics>>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ErrorMetrics {
+    /// Total error count by error code
+    pub error_counts: HashMap<String, u64>,
+    
+    /// Error counts in the last hour
+    pub recent_errors: Vec<ErrorEvent>,
+    
+    /// Error rate (errors per minute)
+    pub error_rate: f64,
+    
+    /// Last updated timestamp
+    pub last_updated: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ErrorEvent {
+    pub code: ErrorCode,
+    pub timestamp: DateTime<Utc>,
+    pub correlation_id: String,
+    pub endpoint: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ErrorStats {
+    /// Total errors in the time period
+    pub total_errors: u64,
+    
+    /// Errors by code
+    pub by_code: HashMap<String, u64>,
+    
+    /// Error rate (errors per minute)
+    pub error_rate: f64,
+    
+    /// Most common errors
+    pub top_errors: Vec<(String, u64)>,
+}
+
+/// Performance metrics for application monitoring
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PerformanceMetrics {
+    /// Request count by endpoint
+    pub request_counts: HashMap<String, u64>,
+    
+    /// Response times in milliseconds by endpoint
+    pub response_times: HashMap<String, Vec<f64>>,
+    
+    /// Average response time by endpoint
+    pub avg_response_times: HashMap<String, f64>,
+    
+    /// P95 response time by endpoint
+    pub p95_response_times: HashMap<String, f64>,
+    
+    /// P99 response time by endpoint
+    pub p99_response_times: HashMap<String, f64>,
+    
+    /// Last updated timestamp
+    pub last_updated: DateTime<Utc>,
+}
+
+/// Infrastructure metrics
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct InfrastructureMetrics {
+    /// Database connection pool usage
+    pub db_pool_usage: f64,
+    
+    /// Redis connection status
+    pub redis_connected: bool,
+    
+    /// Memory usage in MB
+    pub memory_usage_mb: u64,
+    
+    /// CPU usage percentage
+    pub cpu_usage_percent: f64,
+    
+    /// Active connections
+    pub active_connections: u64,
+    
+    /// Last updated timestamp
+    pub last_updated: DateTime<Utc>,
+}
+
+/// Comprehensive monitoring dashboard data
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct MonitoringDashboard {
+    /// Error statistics
+    pub error_stats: ErrorStats,
+    
+    /// Performance metrics
+    pub performance: PerformanceMetrics,
+    
+    /// Infrastructure metrics
+    pub infrastructure: InfrastructureMetrics,
+    
+    /// System health status
+    pub health_status: HealthStatus,
+    
+    /// Last updated timestamp
+    pub last_updated: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub enum HealthStatus {
+    Healthy,
+    Degraded,
+    Unhealthy,
+}
+
+impl ErrorMonitor {
+    pub fn new() -> Self {
+        Self {
+            metrics: Arc::new(RwLock::new(ErrorMetrics {
+                error_counts: HashMap::new(),
+                recent_errors: Vec::new(),
+                error_rate: 0.0,
+                last_updated: Utc::now(),
+            })),
+        }
+    }
+    
+    /// Record an error event
+    pub async fn record_error(
+        &self,
+        code: ErrorCode,
+        correlation_id: String,
+        endpoint: Option<String>,
+    ) {
+        let mut metrics = self.metrics.write().await;
+        
+        // Update error counts
+        let code_str = format!("{:?}", code);
+        *metrics.error_counts.entry(code_str.clone()).or_insert(0) += 1;
+        
+        // Add to recent errors
+        let event = ErrorEvent {
+            code,
+            timestamp: Utc::now(),
+            correlation_id,
+            endpoint,
+        };
+        metrics.recent_errors.push(event);
+        
+        // Keep only last hour of errors
+        let one_hour_ago = Utc::now() - Duration::hours(1);
+        metrics.recent_errors.retain(|e| e.timestamp > one_hour_ago);
+        
+        // Calculate error rate (errors per minute)
+        let errors_in_last_hour = metrics.recent_errors.len() as f64;
+        metrics.error_rate = errors_in_last_hour / 60.0;
+        
+        metrics.last_updated = Utc::now();
+        
+        // Check for error rate spikes
+        if metrics.error_rate > 10.0 {
+            tracing::warn!(
+                error_rate = metrics.error_rate,
+                "High error rate detected"
+            );
+        }
+    }
+    
+    /// Get current error statistics
+    pub async fn get_stats(&self) -> ErrorStats {
+        let metrics = self.metrics.read().await;
+        
+        // Get top 10 errors
+        let mut top_errors: Vec<(String, u64)> = metrics
+            .error_counts
+            .iter()
+            .map(|(k, v)| (k.clone(), *v))
+            .collect();
+        top_errors.sort_by(|a, b| b.1.cmp(&a.1));
+        top_errors.truncate(10);
+        
+        ErrorStats {
+            total_errors: metrics.error_counts.values().sum(),
+            by_code: metrics.error_counts.clone(),
+            error_rate: metrics.error_rate,
+            top_errors,
+        }
+    }
+    
+    /// Get recent errors
+    pub async fn get_recent_errors(&self, limit: usize) -> Vec<ErrorEvent> {
+        let metrics = self.metrics.read().await;
+        metrics
+            .recent_errors
+            .iter()
+            .rev()
+            .take(limit)
+            .cloned()
+            .collect()
+    }
+    
+    /// Reset metrics (for testing or periodic reset)
+    pub async fn reset(&self) {
+        let mut metrics = self.metrics.write().await;
+        metrics.error_counts.clear();
+        metrics.recent_errors.clear();
+        metrics.error_rate = 0.0;
+        metrics.last_updated = Utc::now();
+    }
+    
+    /// Check if error rate exceeds threshold
+    pub async fn is_error_rate_high(&self, threshold: f64) -> bool {
+        let metrics = self.metrics.read().await;
+        metrics.error_rate > threshold
+    }
+    
+    /// Get error count for specific error code
+    pub async fn get_error_count(&self, code: ErrorCode) -> u64 {
+        let metrics = self.metrics.read().await;
+        let code_str = format!("{:?}", code);
+        *metrics.error_counts.get(&code_str).unwrap_or(&0)
+    }
+}
+
+impl Default for ErrorMonitor {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Performance monitoring for request tracking
+#[derive(Clone)]
+pub struct PerformanceMonitor {
+    metrics: Arc<RwLock<PerformanceMetrics>>,
+}
+
+impl PerformanceMonitor {
+    pub fn new() -> Self {
+        Self {
+            metrics: Arc::new(RwLock::new(PerformanceMetrics {
+                request_counts: HashMap::new(),
+                response_times: HashMap::new(),
+                avg_response_times: HashMap::new(),
+                p95_response_times: HashMap::new(),
+                p99_response_times: HashMap::new(),
+                last_updated: Utc::now(),
+            })),
+        }
+    }
+
+    /// Record a request with its response time
+    pub async fn record_request(&self, endpoint: String, response_time_ms: f64) {
+        let mut metrics = self.metrics.write().await;
+        
+        // Update request count
+        *metrics.request_counts.entry(endpoint.clone()).or_insert(0) += 1;
+        
+        // Add response time
+        metrics.response_times
+            .entry(endpoint.clone())
+            .or_insert_with(Vec::new)
+            .push(response_time_ms);
+        
+        // Keep only last 1000 response times per endpoint to avoid memory bloat
+        if let Some(times) = metrics.response_times.get_mut(&endpoint) {
+            if times.len() > 1000 {
+                times.drain(0..times.len() - 1000);
+            }
+        }
+        
+        // Recalculate statistics
+        self.calculate_percentiles(&mut metrics, &endpoint);
+        
+        metrics.last_updated = Utc::now();
+    }
+
+    fn calculate_percentiles(&self, metrics: &mut PerformanceMetrics, endpoint: &str) {
+        if let Some(times) = metrics.response_times.get(endpoint) {
+            if !times.is_empty() {
+                let mut sorted_times = times.clone();
+                sorted_times.sort_by(|a, b| a.partial_cmp(b).unwrap());
+                
+                let avg: f64 = sorted_times.iter().sum::<f64>() / sorted_times.len() as f64;
+                metrics.avg_response_times.insert(endpoint.to_string(), avg);
+                
+                let p95_idx = (sorted_times.len() as f64 * 0.95) as usize;
+                let p99_idx = (sorted_times.len() as f64 * 0.99) as usize;
+                
+                metrics.p95_response_times.insert(
+                    endpoint.to_string(),
+                    sorted_times.get(p95_idx.min(sorted_times.len() - 1)).copied().unwrap_or(0.0),
+                );
+                metrics.p99_response_times.insert(
+                    endpoint.to_string(),
+                    sorted_times.get(p99_idx.min(sorted_times.len() - 1)).copied().unwrap_or(0.0),
+                );
+            }
+        }
+    }
+
+    /// Get current performance metrics
+    pub async fn get_metrics(&self) -> PerformanceMetrics {
+        self.metrics.read().await.clone()
+    }
+
+    /// Reset metrics
+    pub async fn reset(&self) {
+        let mut metrics = self.metrics.write().await;
+        metrics.request_counts.clear();
+        metrics.response_times.clear();
+        metrics.avg_response_times.clear();
+        metrics.p95_response_times.clear();
+        metrics.p99_response_times.clear();
+        metrics.last_updated = Utc::now();
+    }
+}
+
+impl Default for PerformanceMonitor {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Infrastructure monitoring
+#[derive(Clone)]
+pub struct InfrastructureMonitor {
+    metrics: Arc<RwLock<InfrastructureMetrics>>,
+}
+
+impl InfrastructureMonitor {
+    pub fn new() -> Self {
+        Self {
+            metrics: Arc::new(RwLock::new(InfrastructureMetrics {
+                db_pool_usage: 0.0,
+                redis_connected: false,
+                memory_usage_mb: 0,
+                cpu_usage_percent: 0.0,
+                active_connections: 0,
+                last_updated: Utc::now(),
+            })),
+        }
+    }
+
+    /// Update database pool usage
+    pub async fn update_db_pool_usage(&self, usage: f64) {
+        let mut metrics = self.metrics.write().await;
+        metrics.db_pool_usage = usage;
+        metrics.last_updated = Utc::now();
+    }
+
+    /// Update Redis connection status
+    pub async fn update_redis_status(&self, connected: bool) {
+        let mut metrics = self.metrics.write().await;
+        metrics.redis_connected = connected;
+        metrics.last_updated = Utc::now();
+    }
+
+    /// Update memory usage
+    pub async fn update_memory_usage(&self, usage_mb: u64) {
+        let mut metrics = self.metrics.write().await;
+        metrics.memory_usage_mb = usage_mb;
+        metrics.last_updated = Utc::now();
+    }
+
+    /// Update CPU usage
+    pub async fn update_cpu_usage(&self, usage_percent: f64) {
+        let mut metrics = self.metrics.write().await;
+        metrics.cpu_usage_percent = usage_percent;
+        metrics.last_updated = Utc::now();
+    }
+
+    /// Update active connections
+    pub async fn update_active_connections(&self, count: u64) {
+        let mut metrics = self.metrics.write().await;
+        metrics.active_connections = count;
+        metrics.last_updated = Utc::now();
+    }
+
+    /// Get current infrastructure metrics
+    pub async fn get_metrics(&self) -> InfrastructureMetrics {
+        self.metrics.read().await.clone()
+    }
+}
+
+impl Default for InfrastructureMonitor {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Comprehensive monitoring system
+#[derive(Clone)]
+pub struct MonitoringSystem {
+    pub error_monitor: ErrorMonitor,
+    pub performance_monitor: PerformanceMonitor,
+    pub infrastructure_monitor: InfrastructureMonitor,
+    pub alerter: ErrorAlerter,
+}
+
+impl MonitoringSystem {
+    pub fn new() -> Self {
+        Self {
+            error_monitor: ErrorMonitor::new(),
+            performance_monitor: PerformanceMonitor::new(),
+            infrastructure_monitor: InfrastructureMonitor::new(),
+            alerter: ErrorAlerter::new(AlertConfig::default()),
+        }
+    }
+
+    /// Get comprehensive dashboard data
+    pub async fn get_dashboard(&self) -> MonitoringDashboard {
+        let error_stats = self.error_monitor.get_stats().await;
+        let performance = self.performance_monitor.get_metrics().await;
+        let infrastructure = self.infrastructure_monitor.get_metrics().await;
+        
+        // Determine health status based on metrics
+        let health_status = if infrastructure.redis_connected 
+            && infrastructure.db_pool_usage < 0.9 
+            && error_stats.error_rate < 5.0 {
+            HealthStatus::Healthy
+        } else if infrastructure.redis_connected 
+            && infrastructure.db_pool_usage < 0.95 
+            && error_stats.error_rate < 20.0 {
+            HealthStatus::Degraded
+        } else {
+            HealthStatus::Unhealthy
+        };
+
+        MonitoringDashboard {
+            error_stats,
+            performance,
+            infrastructure,
+            health_status,
+            last_updated: Utc::now(),
+        }
+    }
+
+    /// Check for alerts and trigger if needed
+    pub async fn check_alerts(&self) {
+        let error_stats = self.error_monitor.get_stats().await;
+        let infrastructure = self.infrastructure_monitor.get_metrics().await;
+        
+        // Check error rate
+        if self.alerter.should_alert(ErrorCode::InternalServerError, error_stats.error_rate).await {
+            self.alerter.trigger_alert(
+                format!("High error rate detected: {:.2} errors/min", error_stats.error_rate)
+            ).await;
+        }
+        
+        // Check database pool usage
+        if infrastructure.db_pool_usage > 0.9 {
+            self.alerter.trigger_alert(
+                format!("High database pool usage: {:.1}%", infrastructure.db_pool_usage * 100.0)
+            ).await;
+        }
+        
+        // Check Redis connection
+        if !infrastructure.redis_connected {
+            self.alerter.trigger_alert("Redis connection lost".to_string()).await;
+        }
+    }
+}
+
+impl Default for MonitoringSystem {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Alert configuration for error monitoring
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AlertConfig {
+    /// Error rate threshold (errors per minute)
+    pub error_rate_threshold: f64,
+    
+    /// Critical error codes that trigger immediate alerts
+    pub critical_error_codes: Vec<ErrorCode>,
+    
+    /// Alert cooldown period (seconds)
+    pub cooldown_seconds: u64,
+}
+
+impl Default for AlertConfig {
+    fn default() -> Self {
+        Self {
+            error_rate_threshold: 10.0,
+            critical_error_codes: vec![
+                ErrorCode::DatabaseError,
+                ErrorCode::InternalServerError,
+                ErrorCode::ConfigurationError,
+            ],
+            cooldown_seconds: 300, // 5 minutes
+        }
+    }
+}
+
+/// Error alerting system
+pub struct ErrorAlerter {
+    config: AlertConfig,
+    last_alert: Arc<RwLock<Option<DateTime<Utc>>>>,
+}
+
+impl ErrorAlerter {
+    pub fn new(config: AlertConfig) -> Self {
+        Self {
+            config,
+            last_alert: Arc::new(RwLock::new(None)),
+        }
+    }
+    
+    /// Check if an alert should be triggered
+    pub async fn should_alert(&self, code: ErrorCode, error_rate: f64) -> bool {
+        // Check if error rate exceeds threshold
+        if error_rate > self.config.error_rate_threshold {
+            return self.check_cooldown().await;
+        }
+        
+        // Check if error code is critical
+        if self.config.critical_error_codes.contains(&code) {
+            return self.check_cooldown().await;
+        }
+        
+        false
+    }
+    
+    /// Check if cooldown period has passed
+    async fn check_cooldown(&self) -> bool {
+        let last_alert = self.last_alert.read().await;
+        
+        if let Some(last) = *last_alert {
+            let cooldown = Duration::seconds(self.config.cooldown_seconds as i64);
+            if Utc::now() - last < cooldown {
+                return false;
+            }
+        }
+        
+        drop(last_alert);
+        
+        // Update last alert time
+        let mut last_alert = self.last_alert.write().await;
+        *last_alert = Some(Utc::now());
+        
+        true
+    }
+    
+    /// Trigger an alert (placeholder for actual alerting implementation)
+    pub async fn trigger_alert(&self, message: String) {
+        tracing::error!(
+            alert = true,
+            message = %message,
+            "Error alert triggered"
+        );
+        
+        // TODO: Implement actual alerting (email, Slack, PagerDuty, etc.)
+        // For now, just log the alert
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[tokio::test]
+    async fn test_error_monitor_records_errors() {
+        let monitor = ErrorMonitor::new();
+        
+        monitor.record_error(
+            ErrorCode::DatabaseError,
+            "test-123".to_string(),
+            Some("/api/test".to_string()),
+        ).await;
+        
+        let stats = monitor.get_stats().await;
+        assert_eq!(stats.total_errors, 1);
+    }
+
+    #[tokio::test]
+    async fn test_error_monitor_calculates_rate() {
+        let monitor = ErrorMonitor::new();
+        
+        // Record multiple errors
+        for i in 0..5 {
+            monitor.record_error(
+                ErrorCode::ValidationFailed,
+                format!("test-{}", i),
+                None,
+            ).await;
+        }
+        
+        let stats = monitor.get_stats().await;
+        assert!(stats.error_rate > 0.0);
+    }
+
+    #[tokio::test]
+    async fn test_error_monitor_top_errors() {
+        let monitor = ErrorMonitor::new();
+        
+        // Record different error types
+        for _ in 0..3 {
+            monitor.record_error(
+                ErrorCode::DatabaseError,
+                "test".to_string(),
+                None,
+            ).await;
+        }
+        
+        for _ in 0..2 {
+            monitor.record_error(
+                ErrorCode::ValidationFailed,
+                "test".to_string(),
+                None,
+            ).await;
+        }
+        
+        let stats = monitor.get_stats().await;
+        assert_eq!(stats.top_errors[0].1, 3); // DatabaseError should be first
+    }
+
+    #[tokio::test]
+    async fn test_alerter_cooldown() {
+        let config = AlertConfig {
+            error_rate_threshold: 5.0,
+            critical_error_codes: vec![ErrorCode::DatabaseError],
+            cooldown_seconds: 1,
+        };
+        
+        let alerter = ErrorAlerter::new(config);
+        
+        // First alert should trigger
+        assert!(alerter.should_alert(ErrorCode::DatabaseError, 10.0).await);
+        
+        // Second alert should not trigger (cooldown)
+        assert!(!alerter.should_alert(ErrorCode::DatabaseError, 10.0).await);
+        
+        // Wait for cooldown
+        tokio::time::sleep(tokio::time::Duration::from_secs(2)).await;
+        
+        // Third alert should trigger
+        assert!(alerter.should_alert(ErrorCode::DatabaseError, 10.0).await);
+    }
+}
diff --git a/backend/src/routes.rs b/backend/src/routes.rs
new file mode 100644
index 00000000..259863ce
--- /dev/null
+++ b/backend/src/routes.rs
@@ -0,0 +1,149 @@
+use axum::{Router, routing::{get, post, put, delete}, middleware};
+use super::AppState;
+use crate::models::UserRole;
+use crate::middleware::auth::{jwt_auth, api_key_auth, require_role, require_admin};
+
+pub mod analytics;
+
+pub fn api_routes() -> Router<AppState> {
+    Router::new()
+        .nest("/api/v1", public_api_routes())
+        .nest("/api/v1/admin", admin_api_routes())
+        .nest("/api/v1/analytics", analytics_routes())
+        .nest("/api/v1/carbon", carbon_routes())
+        .nest("/api/v1/keys", key_management_routes())
+        .nest("/api/v1/monitoring", monitoring_routes())
+        .nest("/api/v1/collaboration", collaboration_routes())
+}
+
+
+fn public_api_routes() -> Router<AppState> {
+    Router::new()
+        .route("/products", get(crate::handlers::product::list_products))
+        .route("/products/:id", get(crate::handlers::product::get_product))
+        .route("/events", get(crate::handlers::event::list_events))
+        .route("/events/:id", get(crate::handlers::event::get_event))
+        .route("/recalls", get(crate::handlers::recall::list_recalls))
+        .route("/recalls/:id", get(crate::handlers::recall::get_recall))
+        .route("/recalls/:id/affected", get(crate::handlers::recall::list_affected_items))
+        .route("/stats", get(crate::handlers::stats::get_stats))
+        .route("/transactions", get(crate::handlers::financial::list_transactions))
+        .route("/transactions/:id", get(crate::handlers::financial::get_transaction))
+        .route("/compliance/check", post(crate::handlers::compliance::check_compliance)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Inspector, UserRole::Administrator]))))
+        .route("/compliance/report/:product_id", get(crate::handlers::compliance::get_compliance_report)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Auditor, UserRole::Administrator]))))
+        .route("/audit/report", get(crate::handlers::compliance::generate_audit_report)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Auditor, UserRole::Administrator]))))
+        .layer(middleware::from_fn(api_key_auth))
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
+fn admin_api_routes() -> Router<AppState> {
+    Router::new()
+        .route("/products", post(crate::handlers::product::create_product))
+        .route("/products/:id", put(crate::handlers::product::update_product).delete(crate::handlers::product::delete_product))
+        .route("/events", post(crate::handlers::event::create_event)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Supplier, UserRole::Carrier, UserRole::Administrator]))))
+        .route("/recalls", post(crate::handlers::recall::create_recall)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Inspector, UserRole::Administrator]))))
+        .route("/recalls/:id/notify", post(crate::handlers::recall::notify_recall)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Inspector, UserRole::Administrator]))))
+        .route("/recalls/:id/effectiveness", post(crate::handlers::recall::update_effectiveness)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Inspector, UserRole::Administrator]))))
+        .route("/transactions", post(crate::handlers::financial::create_transaction)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Supplier, UserRole::Administrator]))))
+        .route("/invoices", post(crate::handlers::financial::create_invoice)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Supplier, UserRole::Administrator]))))
+        .route("/financing/request", post(crate::handlers::financial::request_financing)
+            .layer(middleware::from_fn(require_role(vec![UserRole::Supplier, UserRole::Administrator]))))
+        .route("/users", post(crate::handlers::user::create_user))
+        .route("/users/me", get(crate::handlers::user::get_current_user))
+        .route("/auth/login", post(crate::handlers::auth::login))
+        .route("/auth/register", post(crate::handlers::auth::register))
+        .layer(middleware::from_fn(require_admin))
+        .layer(middleware::from_fn(jwt_auth))
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
+// Public routes that don't require authentication
+pub fn health_routes() -> Router<AppState> {
+    Router::new()
+        .route("/health", get(crate::handlers::health::health_check))
+        .route("/health/db", get(crate::handlers::health::db_health_check))
+}
+
+fn analytics_routes() -> Router<AppState> {
+    Router::new()
+        .route("/dashboard", get(crate::routes::analytics::dashboard))
+        .route("/products/:id", get(crate::routes::analytics::product_analytics))
+        .route("/events", get(crate::routes::analytics::event_analytics))
+        .route("/users", get(crate::routes::analytics::user_analytics))
+        .route("/export", get(crate::routes::analytics::export))
+        .layer(middleware::from_fn(require_role(vec![UserRole::Auditor, UserRole::Administrator])))
+        .layer(middleware::from_fn(jwt_auth))
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
+fn key_management_routes() -> Router<AppState> {
+    Router::new()
+        .route("/", get(crate::handlers::api_keys::list_keys).post(crate::handlers::api_keys::create_key))
+        .route("/:id/revoke", post(crate::handlers::api_keys::revoke_key))
+        .route("/:id/rotate", post(crate::handlers::api_keys::rotate_key))
+        .layer(middleware::from_fn(jwt_auth))
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
+fn carbon_routes() -> Router<AppState> {
+    Router::new()
+        // Footprint
+        .route("/footprint/calculate", post(crate::handlers::carbon::calculate_footprint))
+        .route("/footprint/preview", post(crate::handlers::carbon::preview_footprint))
+        .route("/footprint/:product_id", get(crate::handlers::carbon::list_footprints))
+        // Credits
+        .route("/credits", get(crate::handlers::carbon::list_credits))
+        .route("/credits/:id", get(crate::handlers::carbon::get_credit))
+        .route("/credits/generate", post(crate::handlers::carbon::generate_credit))
+        .route("/credits/retire", post(crate::handlers::carbon::retire_credit))
+        // Marketplace
+        .route("/market", get(crate::handlers::carbon::market_summary))
+        .route("/market/trades", get(crate::handlers::carbon::list_trades))
+        .route("/market/list", post(crate::handlers::carbon::list_credit_for_sale))
+        .route("/market/purchase", post(crate::handlers::carbon::purchase_credit))
+        // Verification
+        .route("/verify", post(crate::handlers::carbon::request_verification))
+        .route("/verify/:credit_id", get(crate::handlers::carbon::list_verifications))
+        // Reports
+        .route("/reports", get(crate::handlers::carbon::list_reports).post(crate::handlers::carbon::generate_report))
+        // Dashboard and Supplier Scoring
+        .route("/dashboard", get(crate::handlers::carbon::get_sustainability_dashboard))
+        .route("/supplier-score/:supplier_address", get(crate::handlers::carbon::get_supplier_score))
+        .layer(middleware::from_fn(jwt_auth))
+
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
+fn monitoring_routes() -> Router<AppState> {
+    Router::new()
+        .route("/dashboard", get(crate::handlers::monitoring::get_dashboard))
+        .route("/errors", get(crate::handlers::monitoring::get_error_stats))
+        .route("/errors/recent", get(crate::handlers::monitoring::get_recent_errors))
+        .route("/performance", get(crate::handlers::monitoring::get_performance_metrics))
+        .route("/infrastructure", get(crate::handlers::monitoring::get_infrastructure_metrics))
+        .route("/alerts/check", post(crate::handlers::monitoring::check_alerts))
+        .layer(middleware::from_fn(require_role(vec![UserRole::Auditor, UserRole::Administrator])))
+        .layer(middleware::from_fn(jwt_auth))
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
+fn collaboration_routes() -> Router<AppState> {
+    Router::new()
+        .route("/share", post(crate::handlers::collaboration::share_product))
+        .route("/shares/:product_id", get(crate::handlers::collaboration::list_shares))
+        .route("/requests", post(crate::handlers::collaboration::create_collaboration_request))
+        .route("/requests/:id", put(crate::handlers::collaboration::update_collaboration_request))
+        .route("/audit/:entity_type/:entity_id", get(crate::handlers::collaboration::list_audit_trail))
+        .layer(middleware::from_fn(jwt_auth))
+        .layer(middleware::from_fn(crate::middleware::rate_limit::rate_limit_middleware))
+}
+
diff --git a/backend/src/routes/analytics.rs b/backend/src/routes/analytics.rs
new file mode 100644
index 00000000..8a26e1e6
--- /dev/null
+++ b/backend/src/routes/analytics.rs
@@ -0,0 +1,97 @@
+use axum::{
+    extract::{Path, Query, State},
+    http::{header, StatusCode},
+    response::{IntoResponse, Json, Response},
+};
+use chrono::{Duration, Utc};
+use serde_json::json;
+
+use crate::{
+    error::AppError,
+    models::analytics::{ExportQuery, TimeSeriesQuery},
+    AppState,
+};
+
+/// GET /api/v1/analytics/dashboard
+pub async fn dashboard(
+    State(state): State<AppState>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let metrics = state.analytics_service.get_dashboard_metrics().await?;
+    Ok(Json(json!(metrics)))
+}
+
+/// GET /api/v1/analytics/products/:id
+pub async fn product_analytics(
+    State(state): State<AppState>,
+    Path(product_id): Path<String>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let analytics = state
+        .analytics_service
+        .get_product_analytics(&product_id)
+        .await?;
+    Ok(Json(json!(analytics)))
+}
+
+/// GET /api/v1/analytics/events?start_date=&end_date=&event_type=
+pub async fn event_analytics(
+    State(state): State<AppState>,
+    Query(params): Query<TimeSeriesQuery>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let end = params.end_date.unwrap_or_else(Utc::now);
+    let start = params.start_date.unwrap_or_else(|| end - Duration::days(30));
+
+    let analytics = state
+        .analytics_service
+        .get_event_analytics(start, end, params.event_type.as_deref())
+        .await?;
+    Ok(Json(json!(analytics)))
+}
+
+/// GET /api/v1/analytics/users
+pub async fn user_analytics(
+    State(state): State<AppState>,
+) -> Result<Json<serde_json::Value>, AppError> {
+    let analytics = state.analytics_service.get_user_analytics().await?;
+    Ok(Json(json!(analytics)))
+}
+
+/// GET /api/v1/analytics/export?format=csv&start_date=&end_date=&product_id=&limit=
+pub async fn export(
+    State(state): State<AppState>,
+    Query(params): Query<ExportQuery>,
+) -> Result<Response, AppError> {
+    let end = params.end_date.unwrap_or_else(Utc::now);
+    let start = params.start_date.unwrap_or_else(|| end - Duration::days(30));
+    let limit = params.limit.unwrap_or(10_000).min(50_000);
+    let format = params.format.as_deref().unwrap_or("json");
+
+    match format {
+        "csv" => {
+            let csv = state
+                .analytics_service
+                .export_events_csv(start, end, params.product_id.as_deref(), limit)
+                .await?;
+
+            Ok((
+                StatusCode::OK,
+                [
+                    (header::CONTENT_TYPE, "text/csv; charset=utf-8"),
+                    (
+                        header::CONTENT_DISPOSITION,
+                        "attachment; filename=\"events_export.csv\"",
+                    ),
+                ],
+                csv,
+            )
+                .into_response())
+        }
+        _ => {
+            // JSON export — reuse event analytics with full data
+            let analytics = state
+                .analytics_service
+                .get_event_analytics(start, end, params.event_type.as_deref())
+                .await?;
+            Ok(Json(json!(analytics)).into_response())
+        }
+    }
+}
diff --git a/backend/src/services.rs b/backend/src/services.rs
new file mode 100644
index 00000000..8a3ce687
--- /dev/null
+++ b/backend/src/services.rs
@@ -0,0 +1,1281 @@
+use async_trait::async_trait;
+use sqlx::PgPool;
+use uuid::Uuid;
+use sha2::{Sha256, Digest};
+use rand::Rng;
+use crate::database::{ProductRepository, EventRepository, UserRepository, ApiKeyRepository, ProductFilters, GlobalStats};
+use crate::models::*;
+use bcrypt::{hash, DEFAULT_COST};
+use redis::AsyncCommands;
+
+pub mod financial;
+pub use financial::FinancialService;
+
+pub mod analytics_service;
+pub use analytics_service::AnalyticsService;
+
+pub mod carbon_calculator;
+pub mod carbon;
+pub use carbon::CarbonService;
+
+pub mod audit_service;
+pub use audit_service::AuditService;
+
+pub mod digital_twin_service;
+pub use digital_twin_service::DigitalTwinService;
+
+pub mod collaboration;
+pub use collaboration::CollaborationService;
+
+
+/// Service layer for managing product operations and database interactions.
+/// Provides a clean abstraction over database operations for products.
+pub struct ProductService {
+    pool: PgPool,
+    redis_client: redis::Client,
+}
+
+impl ProductService {
+    pub fn new(pool: PgPool, redis_client: redis::Client) -> Self {
+        Self { pool, redis_client }
+    }
+}
+
+#[async_trait]
+impl ProductRepository for ProductService {
+/// Creates a new product in the database with all associated metadata.
+/// This function handles the complete product creation process including
+/// tags, certifications, media hashes, and custom fields.
+/// 
+/// # Arguments
+/// * `product` - NewProduct struct containing all product information
+/// 
+/// # Returns
+/// * `Result<Product, sqlx::Error>` - The created product or database error
+/// 
+/// # Example
+/// ```rust
+/// let new_product = NewProduct {
+///     id: "PROD-12345".to_string(),
+///     name: "Ethiopian Coffee".to_string(),
+///     // ... other fields
+/// };
+/// let product = service.create_product(new_product).await?;
+/// ```
+    async fn create_product(&self, product: NewProduct) -> Result<Product, sqlx::Error> {
+        let created = sqlx::query_as!(
+            Product,
+            r#"
+            INSERT INTO products (
+                id, name, description, origin_location, category, tags,
+                certifications, media_hashes, custom_fields, owner_address,
+                is_active, created_by, updated_by
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, true, $11, $11)
+            RETURNING *
+            "#,
+            product.id,
+            product.name,
+            product.description,
+            product.origin_location,
+            product.category,
+            &product.tags,
+            &product.certifications,
+            &product.media_hashes,
+            product.custom_fields,
+            product.owner_address,
+            product.created_by
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Invalidate global stats cache
+        let _ = self.invalidate_global_stats().await;
+
+        Ok(created)
+    }
+
+/// Retrieves a product by its unique identifier.
+/// Returns None if the product doesn't exist.
+/// 
+/// # Arguments
+/// * `id` - The unique product identifier
+/// 
+/// # Returns
+/// * `Result<Option<Product>, sqlx::Error>` - Product if found, None otherwise
+    async fn get_product(&self, id: &str) -> Result<Option<Product>, sqlx::Error> {
+        let cache_key = format!("cache:product:{}", id);
+        
+        // Try to get from cache
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            if let Ok(cached) = conn.get::<_, String>(&cache_key).await {
+                if let Ok(product) = serde_json::from_str::<Product>(&cached) {
+                    return Ok(Some(product));
+                }
+            }
+        }
+
+        let product = sqlx::query_as!(
+            Product,
+            "SELECT * FROM products WHERE id = $1",
+            id
+        )
+        .fetch_optional(&self.pool)
+        .await?;
+
+        // Save to cache if found
+        if let Some(ref p) = product {
+            if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+                if let Ok(serialized) = serde_json::to_string(p) {
+                    let _: Result<(), _> = conn.set_ex(&cache_key, serialized, 3600).await;
+                }
+            }
+        }
+
+        Ok(product)
+    }
+
+    async fn update_product(&self, id: &str, product: Product) -> Result<Product, sqlx::Error> {
+        let updated = sqlx::query_as!(
+            Product,
+            r#"
+            UPDATE products SET
+                name = $2,
+                description = $3,
+                origin_location = $4,
+                category = $5,
+                tags = $6,
+                certifications = $7,
+                media_hashes = $8,
+                custom_fields = $9,
+                owner_address = $10,
+                is_active = $11,
+                updated_by = $12
+            WHERE id = $1
+            RETURNING *
+            "#,
+            id,
+            product.name,
+            product.description,
+            product.origin_location,
+            product.category,
+            &product.tags,
+            &product.certifications,
+            &product.media_hashes,
+            product.custom_fields,
+            product.owner_address,
+            product.is_active,
+            product.updated_by
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Invalidate cache
+        let _ = self.invalidate_product_cache(id).await;
+        let _ = self.invalidate_global_stats().await;
+
+        Ok(updated)
+    }
+
+    async fn delete_product(&self, id: &str) -> Result<(), sqlx::Error> {
+        sqlx::query!("DELETE FROM products WHERE id = $1", id)
+            .execute(&self.pool)
+            .await?;
+        
+        // Invalidate cache
+        let _ = self.invalidate_product_cache(id).await;
+        let _ = self.invalidate_global_stats().await;
+        
+        Ok(())
+    }
+
+/// Lists products with optional filtering and pagination.
+/// Builds dynamic SQL queries based on provided filters to efficiently
+/// retrieve product data with proper ordering and limits.
+/// 
+/// # Arguments
+/// * `offset` - Number of records to skip (for pagination)
+/// * `limit` - Maximum number of records to return
+/// * `filters` - Optional ProductFilters for narrowing results
+/// 
+/// # Returns
+/// * `Result<Vec<Product>, sqlx::Error>` - List of products matching criteria
+/// 
+/// # Dynamic Query Building
+/// The function constructs SQL queries dynamically by:
+/// 1. Starting with base SELECT statement
+/// 2. Adding WHERE clauses based on active filters
+/// 3. Binding parameters in order to prevent SQL injection
+/// 4. Adding ORDER BY, LIMIT, and OFFSET clauses
+/// 
+/// # Performance Considerations
+/// - Uses parameterized queries to prevent SQL injection
+/// - Applies database indexes efficiently through WHERE clauses
+/// - Limits results to prevent memory issues with large datasets
+    async fn list_products(
+        &self,
+        offset: i64,
+        limit: i64,
+        filters: Option<ProductFilters>,
+    ) -> Result<Vec<Product>, sqlx::Error> {
+        let mut query = "SELECT * FROM products WHERE 1=1".to_string();
+        let mut bindings = Vec::new();
+        let mut bind_index = 1;
+
+        if let Some(f) = filters {
+            if let Some(owner) = f.owner_address {
+                query.push_str(&format!(" AND owner_address = ${}", bind_index));
+                bindings.push(owner);
+                bind_index += 1;
+            }
+            if let Some(category) = f.category {
+                query.push_str(&format!(" AND category = ${}", bind_index));
+                bindings.push(category);
+                bind_index += 1;
+            }
+            if let Some(is_active) = f.is_active {
+                query.push_str(&format!(" AND is_active = ${}", bind_index));
+                bindings.push(is_active.to_string());
+                bind_index += 1;
+            }
+            if let Some(after) = f.created_after {
+                query.push_str(&format!(" AND created_at >= ${}", bind_index));
+                bindings.push(after.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(before) = f.created_before {
+                query.push_str(&format!(" AND created_at <= ${}", bind_index));
+                bindings.push(before.to_rfc3339());
+                bind_index += 1;
+            }
+        }
+
+        query.push_str(&format!(" ORDER BY created_at DESC LIMIT ${} OFFSET ${}", bind_index, bind_index + 1));
+        bindings.push(limit.to_string());
+        bindings.push(offset.to_string());
+
+        // Build dynamic query
+        let mut q = sqlx::QueryBuilder::new(query);
+        for binding in bindings {
+            q = q.bind(binding);
+        }
+
+        q.build_query_as::<Product>()
+            .fetch_all(&self.pool)
+            .await
+    }
+
+    async fn count_products(&self, filters: Option<ProductFilters>) -> Result<i64, sqlx::Error> {
+        let mut query = "SELECT COUNT(*) FROM products WHERE 1=1".to_string();
+        let mut bindings = Vec::new();
+        let mut bind_index = 1;
+
+        if let Some(f) = filters {
+            if let Some(owner) = f.owner_address {
+                query.push_str(&format!(" AND owner_address = ${}", bind_index));
+                bindings.push(owner);
+                bind_index += 1;
+            }
+            if let Some(category) = f.category {
+                query.push_str(&format!(" AND category = ${}", bind_index));
+                bindings.push(category);
+                bind_index += 1;
+            }
+            if let Some(is_active) = f.is_active {
+                query.push_str(&format!(" AND is_active = ${}", bind_index));
+                bindings.push(is_active.to_string());
+                bind_index += 1;
+            }
+            if let Some(after) = f.created_after {
+                query.push_str(&format!(" AND created_at >= ${}", bind_index));
+                bindings.push(after.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(before) = f.created_before {
+                query.push_str(&format!(" AND created_at <= ${}", bind_index));
+                bindings.push(before.to_rfc3339());
+                bind_index += 1;
+            }
+        }
+
+        let mut q = sqlx::QueryBuilder::new(query);
+        for binding in bindings {
+            q = q.bind(binding);
+        }
+
+        q.build_scalar::<i64>()
+            .fetch_one(&self.pool)
+            .await
+    }
+
+/// Performs full-text search across products using PostgreSQL's built-in search capabilities.
+/// Searches across product name, description, and category fields using both
+/// full-text search and ILIKE for comprehensive matching.
+/// 
+/// # Arguments
+/// * `query` - Search query string
+/// * `limit` - Maximum number of results to return
+/// 
+/// # Search Strategy
+/// Uses a two-pronged approach:
+/// 1. Full-text search with ranking for relevance scoring
+/// 2. ILIKE matching on ID and exact name matches
+/// 
+/// # Returns
+/// * `Result<Vec<Product>, sqlx::Error>` - Products ranked by relevance
+/// 
+/// # Performance
+/// - Utilizes PostgreSQL GIN indexes for efficient full-text search
+/// - Orders by ts_rank for most relevant results first
+    async fn search_products(&self, query: &str, limit: i64) -> Result<Vec<Product>, sqlx::Error> {
+        sqlx::query_as!(
+            Product,
+            r#"
+            SELECT * FROM products 
+            WHERE 
+                to_tsvector('english', name || ' ' || COALESCE(description, '') || ' ' || category) 
+                @@ plainto_tsquery('english', $1)
+                OR name ILIKE $2
+                OR id ILIKE $2
+            ORDER BY ts_rank(to_tsvector('english', name || ' ' || COALESCE(description, '') || ' ' || category), plainto_tsquery('english', $1)) DESC
+            LIMIT $3
+            "#,
+            query,
+            format!("%{}%", query),
+            limit
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn invalidate_product_cache(&self, id: &str) -> Result<(), AppError> {
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            let _: Result<(), _> = conn.del(format!("cache:product:{}", id)).await;
+        }
+        Ok(())
+    }
+
+    async fn invalidate_global_stats(&self) -> Result<(), AppError> {
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            let _: Result<(), _> = conn.del("cache:global_stats").await;
+        }
+        Ok(())
+    }
+}
+
+pub struct EventService {
+    pool: PgPool,
+    redis_client: redis::Client,
+}
+
+impl EventService {
+    pub fn new(pool: PgPool, redis_client: redis::Client) -> Self {
+        Self { pool, redis_client }
+    }
+}
+
+#[async_trait]
+impl EventRepository for EventService {
+    async fn create_event(&self, event: NewTrackingEvent) -> Result<TrackingEvent, sqlx::Error> {
+        let created = sqlx::query_as!(
+            TrackingEvent,
+            r#"
+            INSERT INTO tracking_events (
+                product_id, actor_address, timestamp, event_type,
+                location, data_hash, note, metadata
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+            RETURNING *
+            "#,
+            event.product_id,
+            event.actor_address,
+            event.timestamp,
+            event.event_type,
+            event.location,
+            event.data_hash,
+            event.note,
+            event.metadata
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Invalidate global stats cache
+        let _ = self.invalidate_global_stats().await;
+
+        Ok(created)
+    }
+
+    async fn get_event(&self, id: i64) -> Result<Option<TrackingEvent>, sqlx::Error> {
+        sqlx::query_as!(
+            TrackingEvent,
+            "SELECT * FROM tracking_events WHERE id = $1",
+            id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    async fn list_events_by_product(
+        &self,
+        product_id: &str,
+        offset: i64,
+        limit: i64,
+    ) -> Result<Vec<TrackingEvent>, sqlx::Error> {
+        sqlx::query_as!(
+            TrackingEvent,
+            "SELECT * FROM tracking_events WHERE product_id = $1 ORDER BY timestamp DESC LIMIT $2 OFFSET $3",
+            product_id,
+            limit,
+            offset
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn count_events_by_product(&self, product_id: &str) -> Result<i64, sqlx::Error> {
+        sqlx::query_scalar!(
+            "SELECT COUNT(*) FROM tracking_events WHERE product_id = $1",
+            product_id
+        )
+        .fetch_one(&self.pool)
+        .await
+        .unwrap_or(0)
+    }
+
+    async fn list_events_by_type(
+        &self,
+        product_id: &str,
+        event_type: &str,
+        offset: i64,
+        limit: i64,
+    ) -> Result<Vec<TrackingEvent>, sqlx::Error> {
+        sqlx::query_as!(
+            TrackingEvent,
+            "SELECT * FROM tracking_events WHERE product_id = $1 AND event_type = $2 ORDER BY timestamp DESC LIMIT $3 OFFSET $4",
+            product_id,
+            event_type,
+            limit,
+            offset
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn get_product_stats(&self, product_id: &str) -> Result<Option<ProductStats>, sqlx::Error> {
+        sqlx::query_as!(
+            ProductStats,
+            r#"
+            SELECT 
+                p.id as product_id,
+                (SELECT COUNT(*) FROM tracking_events WHERE product_id = p.id) as event_count,
+                p.is_active,
+                (SELECT MAX(timestamp) FROM tracking_events WHERE product_id = p.id) as last_event_at,
+                (SELECT event_type FROM tracking_events WHERE product_id = p.id ORDER BY timestamp DESC LIMIT 1) as last_event_type
+            FROM products p
+            WHERE p.id = $1
+            "#,
+            product_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    async fn get_global_stats(&self) -> Result<GlobalStats, sqlx::Error> {
+        let cache_key = "cache:global_stats";
+
+        // Try to get from cache
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            if let Ok(cached) = conn.get::<_, String>(cache_key).await {
+                if let Ok(stats) = serde_json::from_str::<GlobalStats>(&cached) {
+                    return Ok(stats);
+                }
+            }
+        }
+
+        // Optimized query with single table scans where possible
+        // Note: For large tables, these counts should be handled differently (e.g. periodically updated counters)
+        let stats = sqlx::query!(
+            r#"
+            SELECT 
+                (SELECT COUNT(*) FROM products) as total_products,
+                (SELECT COUNT(*) FROM products WHERE is_active = true) as active_products,
+                (SELECT COUNT(*) FROM tracking_events) as total_events,
+                (SELECT COUNT(*) FROM users) as total_users,
+                (SELECT COUNT(*) FROM api_keys WHERE is_active = true) as active_api_keys
+            "#
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let global_stats = GlobalStats {
+            total_products: stats.total_products.unwrap_or(0),
+            active_products: stats.active_products.unwrap_or(0),
+            total_events: stats.total_events.unwrap_or(0),
+            total_users: stats.total_users.unwrap_or(0),
+            active_api_keys: stats.active_api_keys.unwrap_or(0),
+        };
+
+        // Save to cache
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            if let Ok(serialized) = serde_json::to_string(&global_stats) {
+                let _: Result<(), _> = conn.set_ex(cache_key, serialized, 300).await;
+            }
+        }
+
+        Ok(global_stats)
+    }
+
+    async fn invalidate_global_stats(&self) -> Result<(), AppError> {
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            let _: Result<(), _> = conn.del("cache:global_stats").await;
+        }
+        Ok(())
+    }
+}
+
+pub struct UserService {
+    pool: PgPool,
+    encryption_key: String,
+}
+
+impl UserService {
+    pub fn new(pool: PgPool, encryption_key: String) -> Self {
+        Self { pool, encryption_key }
+    }
+
+    pub async fn hash_password(password: &str) -> Result<String, bcrypt::BcryptError> {
+        hash(password, DEFAULT_COST)
+    }
+
+    pub async fn generate_api_key() -> String {
+        format!("cl_{}", uuid::Uuid::new_v4().to_string().replace("-", ""))
+    }
+}
+
+#[async_trait]
+impl UserRepository for UserService {
+    async fn create_user(&self, user: NewUser) -> Result<User, sqlx::Error> {
+        let encrypted_email = crate::utils::crypto::encrypt(&user.email, &self.encryption_key)
+            .map_err(|e| sqlx::Error::Protocol(e.to_string()))?;
+        
+        let encrypted_address = if let Some(addr) = &user.stellar_address {
+            Some(crate::utils::crypto::encrypt(addr, &self.encryption_key)
+                .map_err(|e| sqlx::Error::Protocol(e.to_string()))?)
+        } else {
+            None
+        };
+
+        let mut created = sqlx::query_as!(
+            User,
+            r#"
+            INSERT INTO users (email, password_hash, stellar_address, role)
+            VALUES ($1, $2, $3, $4)
+            RETURNING *
+            "#,
+            encrypted_email,
+            user.password_hash,
+            encrypted_address,
+            user.role as UserRole
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Decrypt for returning
+        let _ = self.decrypt_user(&mut created);
+        Ok(created)
+    }
+
+    async fn get_user(&self, id: Uuid) -> Result<Option<User>, sqlx::Error> {
+        let mut user = sqlx::query_as!(
+            User,
+            "SELECT * FROM users WHERE id = $1",
+            id
+        )
+        .fetch_optional(&self.pool)
+        .await?;
+
+        if let Some(ref mut u) = user {
+            let _ = self.decrypt_user(u);
+        }
+        Ok(user)
+    }
+
+    async fn get_user_by_email(&self, email: &str) -> Result<Option<User>, sqlx::Error> {
+        let encrypted_email = crate::utils::crypto::encrypt(email, &self.encryption_key)
+            .map_err(|e| sqlx::Error::Protocol(e.to_string()))?;
+
+        let mut user = sqlx::query_as!(
+            User,
+            "SELECT * FROM users WHERE email = $1",
+            encrypted_email
+        )
+        .fetch_optional(&self.pool)
+        .await?;
+
+        if let Some(ref mut u) = user {
+            let _ = self.decrypt_user(u);
+        }
+        Ok(user)
+    }
+
+    async fn get_user_by_stellar_address(&self, address: &str) -> Result<Option<User>, sqlx::Error> {
+        let encrypted_address = crate::utils::crypto::encrypt(address, &self.encryption_key)
+            .map_err(|e| sqlx::Error::Protocol(e.to_string()))?;
+
+        let mut user = sqlx::query_as!(
+            User,
+            "SELECT * FROM users WHERE stellar_address = $1",
+            encrypted_address
+        )
+        .fetch_optional(&self.pool)
+        .await?;
+
+        if let Some(ref mut u) = user {
+            let _ = self.decrypt_user(u);
+        }
+        Ok(user)
+    }
+
+    async fn update_user(&self, id: Uuid, mut user: User) -> Result<User, sqlx::Error> {
+        let encrypted_email = crate::utils::crypto::encrypt(&user.email, &self.encryption_key)
+            .map_err(|e| sqlx::Error::Protocol(e.to_string()))?;
+        
+        let encrypted_address = if let Some(addr) = &user.stellar_address {
+            Some(crate::utils::crypto::encrypt(addr, &self.encryption_key)
+                .map_err(|e| sqlx::Error::Protocol(e.to_string()))?)
+        } else {
+            None
+        };
+
+        let mut updated = sqlx::query_as!(
+            User,
+            r#"
+            UPDATE users SET
+                email = $2,
+                password_hash = $3,
+                stellar_address = $4,
+                role = $5,
+                api_key = $6,
+                api_key_hash = $7,
+                is_active = $8
+            WHERE id = $1
+            RETURNING *
+            "#,
+            id,
+            encrypted_email,
+            user.password_hash,
+            encrypted_address,
+            user.role as UserRole,
+            user.api_key,
+            user.api_key_hash,
+            user.is_active
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Decrypt for returning
+        let _ = self.decrypt_user(&mut updated);
+        Ok(updated)
+    }
+
+    async fn update_last_login(&self, id: Uuid) -> Result<(), sqlx::Error> {
+        sqlx::query!(
+            "UPDATE users SET last_login_at = NOW() WHERE id = $1",
+            id
+        )
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+}
+
+impl UserService {
+    fn decrypt_user(&self, user: &mut User) -> Result<(), AppError> {
+        if let Ok(decrypted) = crate::utils::crypto::decrypt(&user.email, &self.encryption_key) {
+            user.email = decrypted;
+        }
+        
+        if let Some(addr) = &user.stellar_address {
+            if let Ok(decrypted) = crate::utils::crypto::decrypt(addr, &self.encryption_key) {
+                user.stellar_address = Some(decrypted);
+            }
+        }
+        
+        Ok(())
+    }
+}
+
+pub struct ApiKeyService {
+    pool: PgPool,
+}
+
+impl ApiKeyService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    /// SHA-256 hash of an API key. API keys are long random strings with sufficient
+    /// entropy that bcrypt's computational cost is unnecessary and harmful to throughput.
+    pub fn hash_api_key(api_key: &str) -> String {
+        let mut hasher = Sha256::new();
+        hasher.update(api_key.as_bytes());
+        hex::encode(hasher.finalize())
+    }
+
+    /// Generates a cryptographically secure API key: `cl_` prefix + 64 hex chars (256 bits entropy).
+    pub fn generate_api_key() -> String {
+        let bytes: [u8; 32] = rand::thread_rng().gen();
+        format!("cl_{}", hex::encode(bytes))
+    }
+
+    pub async fn disable_inactive_keys(&self, inactive_days: i64) -> Result<u64, sqlx::Error> {
+        let result = sqlx::query!(
+            r#"
+            UPDATE api_keys
+            SET is_active = false
+            WHERE is_active = true
+              AND last_used_at IS NOT NULL
+              AND last_used_at < NOW() - INTERVAL '1 day' * $1
+            "#,
+            inactive_days
+        )
+        .execute(&self.pool)
+        .await?;
+        Ok(result.rows_affected())
+    }
+}
+
+#[async_trait]
+impl ApiKeyRepository for ApiKeyService {
+    async fn create_api_key(&self, api_key: NewApiKey) -> Result<ApiKey, sqlx::Error> {
+        sqlx::query_as!(
+            ApiKey,
+            r#"
+            INSERT INTO api_keys (user_id, key_hash, name, tier, rate_limit_per_minute, expires_at)
+            VALUES ($1, $2, $3, $4, $5, $6)
+            RETURNING *
+            "#,
+            api_key.user_id,
+            api_key.key_hash,
+            api_key.name,
+            api_key.tier as ApiKeyTier,
+            api_key.rate_limit_per_minute,
+            api_key.expires_at
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    async fn get_api_key(&self, id: Uuid) -> Result<Option<ApiKey>, sqlx::Error> {
+        sqlx::query_as!(
+            ApiKey,
+            "SELECT * FROM api_keys WHERE id = $1",
+            id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    async fn get_api_key_by_hash(&self, key_hash: &str) -> Result<Option<ApiKey>, sqlx::Error> {
+        sqlx::query_as!(
+            ApiKey,
+            "SELECT * FROM api_keys WHERE key_hash = $1 AND is_active = true",
+            key_hash
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    async fn list_api_keys(&self, user_id: Uuid) -> Result<Vec<ApiKey>, sqlx::Error> {
+        sqlx::query_as!(
+            ApiKey,
+            "SELECT * FROM api_keys WHERE user_id = $1 ORDER BY created_at DESC",
+            user_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn update_api_key(&self, id: Uuid, api_key: ApiKey) -> Result<ApiKey, sqlx::Error> {
+        sqlx::query_as!(
+            ApiKey,
+            r#"
+            UPDATE api_keys SET
+                name = $2,
+                tier = $3,
+                rate_limit_per_minute = $4,
+                is_active = $5,
+                expires_at = $6
+            WHERE id = $1
+            RETURNING *
+            "#,
+            id,
+            api_key.name,
+            api_key.tier as ApiKeyTier,
+            api_key.rate_limit_per_minute,
+            api_key.is_active,
+            api_key.expires_at
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    async fn update_last_used(&self, id: Uuid) -> Result<(), sqlx::Error> {
+        sqlx::query!(
+            "UPDATE api_keys SET last_used_at = NOW() WHERE id = $1",
+            id
+        )
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+
+    async fn revoke_api_key(&self, id: Uuid) -> Result<(), sqlx::Error> {
+        sqlx::query!(
+            "UPDATE api_keys SET is_active = false WHERE id = $1",
+            id
+        )
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+}
+
+/// Synchronization service for maintaining consistency between blockchain and database.
+/// This service handles bidirectional sync between smart contract data and
+/// the relational database, ensuring both systems stay in sync.
+pub struct SyncService {
+    pool: PgPool,
+    redis_client: redis::Client,
+    product_service: ProductService,
+    event_service: EventService,
+}
+
+impl SyncService {
+    pub fn new(pool: PgPool, redis_client: redis::Client) -> Self {
+        Self {
+            pool: pool.clone(),
+            redis_client: redis_client.clone(),
+            product_service: ProductService::new(pool.clone(), redis_client.clone()),
+            event_service: EventService::new(pool, redis_client),
+        }
+    }
+
+/// Synchronizes a single product from smart contract to database.
+/// Implements an upsert pattern to handle both new and existing products.
+/// 
+/// # Synchronization Strategy
+/// 1. Check if product exists in database
+/// 2. If exists: Update all fields with blockchain data
+/// 3. If new: Create new product record
+/// 4. Preserve database-specific fields (created_by, updated_by)
+/// 
+/// # Arguments
+/// * `product` - NewProduct data from blockchain
+/// 
+/// # Returns
+/// * `Result<Product, sqlx::Error>` - Synchronized product record
+/// 
+/// # Data Integrity
+/// - Maintains referential integrity with existing records
+/// - Preserves audit trail through updated_by field
+/// - Handles concurrent access safely through database transactions
+    pub async fn sync_product_from_contract(&self, product: NewProduct) -> Result<Product, sqlx::Error> {
+        // Upsert product
+        let existing = self.product_service.get_product(&product.id).await?;
+        
+        if let Some(mut existing_product) = existing {
+            // Update existing product
+            existing_product.name = product.name.clone();
+            existing_product.description = product.description.clone();
+            existing_product.origin_location = product.origin_location.clone();
+            existing_product.category = product.category.clone();
+            existing_product.tags = product.tags.clone();
+            existing_product.certifications = product.certifications.clone();
+            existing_product.media_hashes = product.media_hashes.clone();
+            existing_product.custom_fields = product.custom_fields.clone();
+            existing_product.owner_address = product.owner_address.clone();
+            existing_product.updated_by = product.created_by.clone();
+            
+            self.product_service.update_product(&product.id, existing_product).await
+        } else {
+            // Create new product
+            self.product_service.create_product(product).await
+        }
+    }
+
+    pub async fn sync_event_from_contract(&self, event: NewTrackingEvent) -> Result<TrackingEvent, sqlx::Error> {
+        self.event_service.create_event(event).await
+    }
+
+/// Synchronizes multiple products in a batch for efficient bulk operations.
+/// Processes products sequentially to maintain data consistency while
+/// providing better performance than individual calls.
+/// 
+/// # Arguments
+/// * `products` - Vector of NewProduct objects from blockchain
+/// 
+/// # Returns
+/// * `Result<Vec<Product>, sqlx::Error>` - All synchronized products
+/// 
+/// # Performance Considerations
+/// - Sequential processing prevents database overload
+/// - Each product sync is atomic (all or nothing)
+/// - Error handling stops processing on first failure
+/// 
+/// # Future Improvements
+/// Consider parallel processing with connection pooling for large batches
+    pub async fn sync_batch_products(&self, products: Vec<NewProduct>) -> Result<Vec<Product>, sqlx::Error> {
+        let mut results = Vec::new();
+        for product in products {
+            results.push(self.sync_product_from_contract(product).await?);
+        }
+        Ok(results)
+    }
+
+    pub async fn sync_batch_events(&self, events: Vec<NewTrackingEvent>) -> Result<Vec<TrackingEvent>, sqlx::Error> {
+        let mut results = Vec::new();
+        for event in events {
+            results.push(self.sync_event_from_contract(event).await?);
+        }
+        Ok(results)
+    }
+}
+
+pub struct RecallService {
+    pool: PgPool,
+}
+
+impl RecallService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    pub async fn create_recall(
+        &self,
+        product_id: &str,
+        batch_id: Option<&str>,
+        title: &str,
+        reason: &str,
+        severity: &str,
+        trigger_type: &str,
+        triggered_by: Option<&str>,
+        triggered_event_id: Option<i64>,
+        metadata: serde_json::Value,
+    ) -> Result<Recall, sqlx::Error> {
+        let recall = sqlx::query_as!(
+            Recall,
+            r#"
+            INSERT INTO recalls (
+                product_id, batch_id, title, reason, severity, status,
+                trigger_type, triggered_by, triggered_event_id, metadata
+            ) VALUES ($1, $2, $3, $4, $5, 'open', $6, $7, $8, $9)
+            RETURNING
+                id,
+                product_id,
+                batch_id,
+                title,
+                reason,
+                severity,
+                status,
+                trigger_type,
+                triggered_by,
+                triggered_event_id,
+                started_at,
+                closed_at,
+                metadata,
+                created_at,
+                updated_at
+            "#,
+            product_id,
+            batch_id,
+            title,
+            reason,
+            severity,
+            trigger_type,
+            triggered_by,
+            triggered_event_id,
+            metadata
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let _ = sqlx::query!(
+            r#"
+            INSERT INTO recall_effectiveness (recall_id)
+            VALUES ($1)
+            ON CONFLICT (recall_id) DO NOTHING
+            "#,
+            recall.id
+        )
+        .execute(&self.pool)
+        .await?;
+
+        Ok(recall)
+    }
+
+    pub async fn identify_affected_items(
+        &self,
+        recall_id: uuid::Uuid,
+        product_id: &str,
+        batch_id: Option<&str>,
+    ) -> Result<Vec<RecallAffectedItem>, sqlx::Error> {
+        let _rows = sqlx::query!(
+            r#"
+            WITH affected_products AS (
+                SELECT DISTINCT p.id AS product_id
+                FROM products p
+                WHERE ($2::TEXT IS NULL)
+                   OR (p.custom_fields->>'batch_id') = $2
+                UNION
+                SELECT DISTINCT e.product_id AS product_id
+                FROM tracking_events e
+                WHERE ($2::TEXT IS NULL)
+                   OR (e.metadata->>'batch_id') = $2
+            )
+            INSERT INTO recall_affected_items (
+                recall_id, product_id, batch_id, stakeholder_role, stakeholder_address, detected_via
+            )
+            SELECT
+                $1,
+                ap.product_id,
+                $2,
+                NULL,
+                NULL,
+                'metadata'
+            FROM affected_products ap
+            WHERE ap.product_id = $3
+               OR ($2::TEXT IS NOT NULL AND ap.product_id IS NOT NULL)
+            ON CONFLICT DO NOTHING
+            RETURNING id
+            "#,
+            recall_id,
+            batch_id,
+            product_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let items = sqlx::query_as!(
+            RecallAffectedItem,
+            r#"
+            SELECT
+                id,
+                recall_id,
+                product_id,
+                batch_id,
+                stakeholder_role,
+                stakeholder_address,
+                detected_via,
+                created_at
+            FROM recall_affected_items
+            WHERE recall_id = $1
+            ORDER BY created_at ASC
+            "#,
+            recall_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let affected_count = items.len() as i32;
+        let _ = sqlx::query!(
+            r#"
+            UPDATE recall_effectiveness
+            SET affected_count = $2,
+                last_updated_at = NOW()
+            WHERE recall_id = $1
+            "#,
+            recall_id,
+            affected_count
+        )
+        .execute(&self.pool)
+        .await?;
+
+        Ok(items)
+    }
+
+    pub async fn queue_notifications(
+        &self,
+        recall_id: uuid::Uuid,
+        recipients: Vec<String>,
+        channel: &str,
+        payload: serde_json::Value,
+    ) -> Result<Vec<RecallNotification>, sqlx::Error> {
+        for recipient in &recipients {
+            let _ = sqlx::query!(
+                r#"
+                INSERT INTO recall_notifications (recall_id, recipient, channel, status, payload)
+                VALUES ($1, $2, $3, 'queued', $4)
+                "#,
+                recall_id,
+                recipient,
+                channel,
+                payload
+            )
+            .execute(&self.pool)
+            .await?;
+        }
+
+        let notifications = sqlx::query_as!(
+            RecallNotification,
+            r#"
+            SELECT
+                id,
+                recall_id,
+                recipient,
+                channel,
+                status,
+                sent_at,
+                acknowledged_at,
+                payload,
+                error,
+                created_at
+            FROM recall_notifications
+            WHERE recall_id = $1
+            ORDER BY created_at ASC
+            "#,
+            recall_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let notified_count = notifications.len() as i32;
+        let _ = sqlx::query!(
+            r#"
+            UPDATE recall_effectiveness
+            SET notified_count = $2,
+                last_updated_at = NOW()
+            WHERE recall_id = $1
+            "#,
+            recall_id,
+            notified_count
+        )
+        .execute(&self.pool)
+        .await?;
+
+        Ok(notifications)
+    }
+
+    pub async fn list_recalls_by_product(
+        &self,
+        product_id: &str,
+        limit: i64,
+        offset: i64,
+    ) -> Result<Vec<Recall>, sqlx::Error> {
+        sqlx::query_as!(
+            Recall,
+            r#"
+            SELECT
+                id,
+                product_id,
+                batch_id,
+                title,
+                reason,
+                severity,
+                status,
+                trigger_type,
+                triggered_by,
+                triggered_event_id,
+                started_at,
+                closed_at,
+                metadata,
+                created_at,
+                updated_at
+            FROM recalls
+            WHERE product_id = $1
+            ORDER BY created_at DESC
+            LIMIT $2 OFFSET $3
+            "#,
+            product_id,
+            limit,
+            offset
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    pub async fn get_recall(&self, recall_id: uuid::Uuid) -> Result<Option<Recall>, sqlx::Error> {
+        sqlx::query_as!(
+            Recall,
+            r#"
+            SELECT
+                id,
+                product_id,
+                batch_id,
+                title,
+                reason,
+                severity,
+                status,
+                trigger_type,
+                triggered_by,
+                triggered_event_id,
+                started_at,
+                closed_at,
+                metadata,
+                created_at,
+                updated_at
+            FROM recalls
+            WHERE id = $1
+            "#,
+            recall_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn get_effectiveness(
+        &self,
+        recall_id: uuid::Uuid,
+    ) -> Result<Option<RecallEffectiveness>, sqlx::Error> {
+        sqlx::query_as!(
+            RecallEffectiveness,
+            r#"
+            SELECT
+                recall_id,
+                affected_count,
+                notified_count,
+                acknowledged_count,
+                recovered_count,
+                disposed_count,
+                last_updated_at
+            FROM recall_effectiveness
+            WHERE recall_id = $1
+            "#,
+            recall_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn update_effectiveness(
+        &self,
+        recall_id: uuid::Uuid,
+        acknowledged_delta: i32,
+        recovered_delta: i32,
+        disposed_delta: i32,
+    ) -> Result<RecallEffectiveness, sqlx::Error> {
+        sqlx::query_as!(
+            RecallEffectiveness,
+            r#"
+            UPDATE recall_effectiveness
+            SET acknowledged_count = GREATEST(0, acknowledged_count + $2),
+                recovered_count = GREATEST(0, recovered_count + $3),
+                disposed_count = GREATEST(0, disposed_count + $4),
+                last_updated_at = NOW()
+            WHERE recall_id = $1
+            RETURNING
+                recall_id,
+                affected_count,
+                notified_count,
+                acknowledged_count,
+                recovered_count,
+                disposed_count,
+                last_updated_at
+            "#,
+            recall_id,
+            acknowledged_delta,
+            recovered_delta,
+            disposed_delta
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+}
diff --git a/backend/src/services/analytics_service.rs b/backend/src/services/analytics_service.rs
new file mode 100644
index 00000000..4fd4bfb4
--- /dev/null
+++ b/backend/src/services/analytics_service.rs
@@ -0,0 +1,619 @@
+use chrono::{DateTime, Utc};
+use redis::AsyncCommands;
+use sqlx::PgPool;
+
+use crate::error::AppError;
+use crate::models::analytics::{
+    ActorCount, ApiKeyTierCount, CategoryCount, DashboardMetrics, EventAnalytics, EventTypeCount,
+    HourlyCount, LocationCount, ProductAnalytics, ProductEventCount, TimeSeriesPoint, UserAnalytics,
+};
+use crate::utils::aggregation::{
+    build_hourly_distribution, compute_percentages, fill_time_series_gaps, safe_average,
+};
+
+const CACHE_TTL_SECS: usize = 300; // 5 minutes
+
+pub struct AnalyticsService {
+    pool: PgPool,
+    redis_url: String,
+}
+
+impl AnalyticsService {
+    pub fn new(pool: PgPool, redis_url: String) -> Self {
+        Self { pool, redis_url }
+    }
+
+    // --- Redis helpers ---
+
+    async fn get_redis_conn(&self) -> Option<redis::aio::MultiplexedConnection> {
+        let client = redis::Client::open(self.redis_url.as_str()).ok()?;
+        client.get_multiplexed_tokio_connection().await.ok()
+    }
+
+    async fn cache_get(&self, key: &str) -> Option<String> {
+        let mut conn = self.get_redis_conn().await?;
+        conn.get::<_, String>(key).await.ok()
+    }
+
+    async fn cache_set(&self, key: &str, value: &str) {
+        if let Some(mut conn) = self.get_redis_conn().await {
+            let _: Result<(), _> = conn.set_ex(key, value, CACHE_TTL_SECS).await;
+        }
+    }
+
+    // --- Dashboard Analytics ---
+
+    pub async fn get_dashboard_metrics(&self) -> Result<DashboardMetrics, AppError> {
+        let cache_key = "analytics:dashboard";
+        if let Some(cached) = self.cache_get(cache_key).await {
+            if let Ok(metrics) = serde_json::from_str::<DashboardMetrics>(&cached) {
+                return Ok(metrics);
+            }
+        }
+
+        let now = Utc::now();
+        let day_ago = now - chrono::Duration::hours(24);
+        let week_ago = now - chrono::Duration::days(7);
+        let month_ago = now - chrono::Duration::days(30);
+
+        // Core counts
+        let counts = sqlx::query!(
+            r#"
+            SELECT
+                (SELECT COUNT(*) FROM products)                                    AS total_products,
+                (SELECT COUNT(*) FROM products WHERE is_active = true)             AS active_products,
+                (SELECT COUNT(*) FROM products WHERE is_active = false)            AS inactive_products,
+                (SELECT COUNT(*) FROM tracking_events)                             AS total_events,
+                (SELECT COUNT(*) FROM users)                                       AS total_users,
+                (SELECT COUNT(*) FROM tracking_events WHERE created_at >= $1)      AS events_last_24h,
+                (SELECT COUNT(*) FROM tracking_events WHERE created_at >= $2)      AS events_last_7d,
+                (SELECT COUNT(*) FROM tracking_events WHERE created_at >= $3)      AS events_last_30d,
+                (SELECT COUNT(*) FROM products WHERE created_at >= $3)             AS products_last_30d
+            "#,
+            day_ago,
+            week_ago,
+            month_ago,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Top event types
+        let event_type_rows = sqlx::query!(
+            r#"
+            SELECT event_type, COUNT(*) AS count
+            FROM tracking_events
+            GROUP BY event_type
+            ORDER BY count DESC
+            LIMIT 10
+            "#
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let raw_event_types: Vec<(String, i64)> = event_type_rows
+            .into_iter()
+            .map(|r| (r.event_type, r.count.unwrap_or(0)))
+            .collect();
+        let top_event_types = compute_percentages(raw_event_types);
+
+        // Top categories
+        let category_rows = sqlx::query!(
+            r#"
+            SELECT
+                category,
+                COUNT(*) AS count,
+                COUNT(*) FILTER (WHERE is_active = true) AS active_count
+            FROM products
+            GROUP BY category
+            ORDER BY count DESC
+            LIMIT 10
+            "#
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let top_categories: Vec<CategoryCount> = category_rows
+            .into_iter()
+            .map(|r| CategoryCount {
+                category: r.category,
+                count: r.count.unwrap_or(0),
+                active_count: r.active_count.unwrap_or(0),
+            })
+            .collect();
+
+        let metrics = DashboardMetrics {
+            total_products: counts.total_products.unwrap_or(0),
+            active_products: counts.active_products.unwrap_or(0),
+            inactive_products: counts.inactive_products.unwrap_or(0),
+            total_events: counts.total_events.unwrap_or(0),
+            total_users: counts.total_users.unwrap_or(0),
+            events_last_24h: counts.events_last_24h.unwrap_or(0),
+            events_last_7d: counts.events_last_7d.unwrap_or(0),
+            events_last_30d: counts.events_last_30d.unwrap_or(0),
+            products_registered_last_30d: counts.products_last_30d.unwrap_or(0),
+            top_event_types,
+            top_categories,
+            generated_at: now,
+        };
+
+        if let Ok(json) = serde_json::to_string(&metrics) {
+            self.cache_set(cache_key, &json).await;
+        }
+
+        Ok(metrics)
+    }
+
+    // --- Product Analytics ---
+
+    pub async fn get_product_analytics(
+        &self,
+        product_id: &str,
+    ) -> Result<ProductAnalytics, AppError> {
+        let cache_key = format!("analytics:product:{}", product_id);
+        if let Some(cached) = self.cache_get(&cache_key).await {
+            if let Ok(analytics) = serde_json::from_str::<ProductAnalytics>(&cached) {
+                return Ok(analytics);
+            }
+        }
+
+        // Basic product info + aggregate stats
+        let product = sqlx::query!(
+            r#"
+            SELECT
+                p.id,
+                p.name,
+                p.category,
+                p.is_active,
+                COUNT(e.id)                         AS total_events,
+                COUNT(DISTINCT e.actor_address)      AS unique_actors,
+                COUNT(DISTINCT e.location)           AS unique_locations,
+                MIN(e.timestamp)                     AS first_event_at,
+                MAX(e.timestamp)                     AS last_event_at
+            FROM products p
+            LEFT JOIN tracking_events e ON e.product_id = p.id
+            WHERE p.id = $1
+            GROUP BY p.id, p.name, p.category, p.is_active
+            "#,
+            product_id
+        )
+        .fetch_optional(&self.pool)
+        .await?
+        .ok_or_else(|| AppError::NotFound(format!("Product {} not found", product_id)))?;
+
+        // Event type breakdown
+        let type_rows = sqlx::query!(
+            r#"
+            SELECT event_type, COUNT(*) AS count
+            FROM tracking_events
+            WHERE product_id = $1
+            GROUP BY event_type
+            ORDER BY count DESC
+            "#,
+            product_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let raw_types: Vec<(String, i64)> = type_rows
+            .into_iter()
+            .map(|r| (r.event_type, r.count.unwrap_or(0)))
+            .collect();
+        let event_type_breakdown = compute_percentages(raw_types);
+
+        // Daily time series (last 90 days)
+        let series_start = Utc::now() - chrono::Duration::days(90);
+        let ts_rows = sqlx::query!(
+            r#"
+            SELECT
+                TO_CHAR(DATE_TRUNC('day', timestamp), 'YYYY-MM-DD') AS date,
+                COUNT(*) AS count
+            FROM tracking_events
+            WHERE product_id = $1 AND timestamp >= $2
+            GROUP BY DATE_TRUNC('day', timestamp)
+            ORDER BY DATE_TRUNC('day', timestamp)
+            "#,
+            product_id,
+            series_start,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let raw_series: Vec<TimeSeriesPoint> = ts_rows
+            .into_iter()
+            .filter_map(|r| {
+                r.date.map(|d| TimeSeriesPoint {
+                    date: d,
+                    count: r.count.unwrap_or(0),
+                })
+            })
+            .collect();
+
+        let event_time_series = fill_time_series_gaps(raw_series, series_start, Utc::now());
+
+        let lifecycle_days = match (product.first_event_at, product.last_event_at) {
+            (Some(first), Some(last)) => {
+                Some((last - first).num_days())
+            }
+            _ => None,
+        };
+
+        let analytics = ProductAnalytics {
+            product_id: product.id,
+            product_name: product.name,
+            category: product.category,
+            is_active: product.is_active,
+            total_events: product.total_events.unwrap_or(0),
+            unique_actors: product.unique_actors.unwrap_or(0),
+            unique_locations: product.unique_locations.unwrap_or(0),
+            first_event_at: product.first_event_at,
+            last_event_at: product.last_event_at,
+            lifecycle_days,
+            event_type_breakdown,
+            event_time_series,
+        };
+
+        if let Ok(json) = serde_json::to_string(&analytics) {
+            self.cache_set(&cache_key, &json).await;
+        }
+
+        Ok(analytics)
+    }
+
+    // --- Event Analytics ---
+
+    pub async fn get_event_analytics(
+        &self,
+        start: DateTime<Utc>,
+        end: DateTime<Utc>,
+        event_type_filter: Option<&str>,
+    ) -> Result<EventAnalytics, AppError> {
+        let cache_key = format!(
+            "analytics:events:{}:{}:{}",
+            start.format("%Y%m%d"),
+            end.format("%Y%m%d"),
+            event_type_filter.unwrap_or("all")
+        );
+        if let Some(cached) = self.cache_get(&cache_key).await {
+            if let Ok(analytics) = serde_json::from_str::<EventAnalytics>(&cached) {
+                return Ok(analytics);
+            }
+        }
+
+        // Total count
+        let total_row = sqlx::query!(
+            "SELECT COUNT(*) AS count FROM tracking_events WHERE timestamp BETWEEN $1 AND $2",
+            start,
+            end
+        )
+        .fetch_one(&self.pool)
+        .await?;
+        let total_events = total_row.count.unwrap_or(0);
+
+        // By type
+        let type_rows = sqlx::query!(
+            r#"
+            SELECT event_type, COUNT(*) AS count
+            FROM tracking_events
+            WHERE timestamp BETWEEN $1 AND $2
+            GROUP BY event_type
+            ORDER BY count DESC
+            LIMIT 20
+            "#,
+            start,
+            end
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let raw_types: Vec<(String, i64)> = type_rows
+            .into_iter()
+            .map(|r| (r.event_type, r.count.unwrap_or(0)))
+            .collect();
+        let events_by_type = compute_percentages(raw_types);
+
+        // By location
+        let loc_rows = sqlx::query!(
+            r#"
+            SELECT location, COUNT(*) AS count
+            FROM tracking_events
+            WHERE timestamp BETWEEN $1 AND $2
+            GROUP BY location
+            ORDER BY count DESC
+            LIMIT 20
+            "#,
+            start,
+            end
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let events_by_location: Vec<LocationCount> = loc_rows
+            .into_iter()
+            .map(|r| LocationCount {
+                location: r.location,
+                count: r.count.unwrap_or(0),
+            })
+            .collect();
+
+        // By actor
+        let actor_rows = sqlx::query!(
+            r#"
+            SELECT actor_address, COUNT(*) AS count
+            FROM tracking_events
+            WHERE timestamp BETWEEN $1 AND $2
+            GROUP BY actor_address
+            ORDER BY count DESC
+            LIMIT 20
+            "#,
+            start,
+            end
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let events_by_actor: Vec<ActorCount> = actor_rows
+            .into_iter()
+            .map(|r| ActorCount {
+                actor_address: r.actor_address,
+                count: r.count.unwrap_or(0),
+            })
+            .collect();
+
+        // Hourly distribution
+        let hourly_rows = sqlx::query!(
+            r#"
+            SELECT EXTRACT(HOUR FROM timestamp)::INT AS hour, COUNT(*) AS count
+            FROM tracking_events
+            WHERE timestamp BETWEEN $1 AND $2
+            GROUP BY EXTRACT(HOUR FROM timestamp)
+            ORDER BY hour
+            "#,
+            start,
+            end
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let raw_hourly: Vec<(i32, i64)> = hourly_rows
+            .into_iter()
+            .filter_map(|r| r.hour.map(|h| (h, r.count.unwrap_or(0))))
+            .collect();
+        let hourly_distribution = build_hourly_distribution(raw_hourly);
+
+        // Daily time series
+        let ts_rows = sqlx::query!(
+            r#"
+            SELECT
+                TO_CHAR(DATE_TRUNC('day', timestamp), 'YYYY-MM-DD') AS date,
+                COUNT(*) AS count
+            FROM tracking_events
+            WHERE timestamp BETWEEN $1 AND $2
+            GROUP BY DATE_TRUNC('day', timestamp)
+            ORDER BY DATE_TRUNC('day', timestamp)
+            "#,
+            start,
+            end
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let raw_series: Vec<TimeSeriesPoint> = ts_rows
+            .into_iter()
+            .filter_map(|r| {
+                r.date.map(|d| TimeSeriesPoint {
+                    date: d,
+                    count: r.count.unwrap_or(0),
+                })
+            })
+            .collect();
+        let daily_time_series = fill_time_series_gaps(raw_series, start, end);
+
+        // Avg events per product
+        let product_count_row = sqlx::query!(
+            "SELECT COUNT(DISTINCT product_id) AS count FROM tracking_events WHERE timestamp BETWEEN $1 AND $2",
+            start,
+            end
+        )
+        .fetch_one(&self.pool)
+        .await?;
+        let product_count = product_count_row.count.unwrap_or(0);
+        let avg_events_per_product = safe_average(total_events, product_count);
+
+        // Most active products
+        let active_rows = sqlx::query!(
+            r#"
+            SELECT e.product_id, p.name AS product_name, COUNT(*) AS event_count
+            FROM tracking_events e
+            JOIN products p ON p.id = e.product_id
+            WHERE e.timestamp BETWEEN $1 AND $2
+            GROUP BY e.product_id, p.name
+            ORDER BY event_count DESC
+            LIMIT 10
+            "#,
+            start,
+            end
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let most_active_products: Vec<ProductEventCount> = active_rows
+            .into_iter()
+            .map(|r| ProductEventCount {
+                product_id: r.product_id,
+                product_name: r.product_name,
+                event_count: r.event_count.unwrap_or(0),
+            })
+            .collect();
+
+        let analytics = EventAnalytics {
+            total_events,
+            events_by_type,
+            events_by_location,
+            events_by_actor,
+            hourly_distribution,
+            daily_time_series,
+            avg_events_per_product,
+            most_active_products,
+        };
+
+        if let Ok(json) = serde_json::to_string(&analytics) {
+            self.cache_set(&cache_key, &json).await;
+        }
+
+        Ok(analytics)
+    }
+
+    // --- User Analytics ---
+
+    pub async fn get_user_analytics(&self) -> Result<UserAnalytics, AppError> {
+        let cache_key = "analytics:users";
+        if let Some(cached) = self.cache_get(cache_key).await {
+            if let Ok(analytics) = serde_json::from_str::<UserAnalytics>(&cached) {
+                return Ok(analytics);
+            }
+        }
+
+        let month_ago = Utc::now() - chrono::Duration::days(30);
+
+        let counts = sqlx::query!(
+            r#"
+            SELECT
+                (SELECT COUNT(*) FROM users)                                        AS total_users,
+                (SELECT COUNT(*) FROM users WHERE is_active = true)                 AS active_users,
+                (SELECT COUNT(*) FROM users WHERE stellar_address IS NOT NULL)      AS users_with_stellar,
+                (SELECT COUNT(*) FROM users WHERE created_at >= $1)                 AS new_users_last_30d,
+                (SELECT COUNT(*) FROM api_keys)                                     AS total_api_keys,
+                (SELECT COUNT(*) FROM api_keys WHERE is_active = true)              AS active_api_keys
+            "#,
+            month_ago,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // API keys by tier
+        let tier_rows = sqlx::query!(
+            r#"
+            SELECT tier, COUNT(*) AS count
+            FROM api_keys
+            GROUP BY tier
+            ORDER BY count DESC
+            "#
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let api_keys_by_tier: Vec<ApiKeyTierCount> = tier_rows
+            .into_iter()
+            .map(|r| ApiKeyTierCount {
+                tier: r.tier,
+                count: r.count.unwrap_or(0),
+            })
+            .collect();
+
+        // User registration time series (last 90 days)
+        let series_start = Utc::now() - chrono::Duration::days(90);
+        let ts_rows = sqlx::query!(
+            r#"
+            SELECT
+                TO_CHAR(DATE_TRUNC('day', created_at), 'YYYY-MM-DD') AS date,
+                COUNT(*) AS count
+            FROM users
+            WHERE created_at >= $1
+            GROUP BY DATE_TRUNC('day', created_at)
+            ORDER BY DATE_TRUNC('day', created_at)
+            "#,
+            series_start,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        let raw_series: Vec<TimeSeriesPoint> = ts_rows
+            .into_iter()
+            .filter_map(|r| {
+                r.date.map(|d| TimeSeriesPoint {
+                    date: d,
+                    count: r.count.unwrap_or(0),
+                })
+            })
+            .collect();
+        let user_registration_series =
+            fill_time_series_gaps(raw_series, series_start, Utc::now());
+
+        let analytics = UserAnalytics {
+            total_users: counts.total_users.unwrap_or(0),
+            active_users: counts.active_users.unwrap_or(0),
+            users_with_stellar: counts.users_with_stellar.unwrap_or(0),
+            new_users_last_30d: counts.new_users_last_30d.unwrap_or(0),
+            total_api_keys: counts.total_api_keys.unwrap_or(0),
+            active_api_keys: counts.active_api_keys.unwrap_or(0),
+            api_keys_by_tier,
+            user_registration_series,
+        };
+
+        if let Ok(json) = serde_json::to_string(&analytics) {
+            self.cache_set(cache_key, &json).await;
+        }
+
+        Ok(analytics)
+    }
+
+    // --- Export ---
+
+    pub async fn export_events_csv(
+        &self,
+        start: DateTime<Utc>,
+        end: DateTime<Utc>,
+        product_id: Option<&str>,
+        limit: i64,
+    ) -> Result<String, AppError> {
+        let rows = sqlx::query!(
+            r#"
+            SELECT
+                e.id,
+                e.product_id,
+                p.name AS product_name,
+                e.actor_address,
+                e.timestamp,
+                e.event_type,
+                e.location,
+                e.note,
+                e.data_hash
+            FROM tracking_events e
+            JOIN products p ON p.id = e.product_id
+            WHERE e.timestamp BETWEEN $1 AND $2
+              AND ($3::TEXT IS NULL OR e.product_id = $3)
+            ORDER BY e.timestamp DESC
+            LIMIT $4
+            "#,
+            start,
+            end,
+            product_id,
+            limit,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let headers = &[
+            "id",
+            "product_id",
+            "product_name",
+            "actor_address",
+            "timestamp",
+            "event_type",
+            "location",
+            "note",
+            "data_hash",
+        ];
+
+        let data_rows: Vec<Vec<String>> = rows
+            .into_iter()
+            .map(|r| {
+                vec![
+                    r.id.to_string(),
+                    r.product_id.clone(),
+                    crate::utils::aggregation::csv_escape(&r.product_name),
+                    r.actor_address.clone(),
+                    r.timestamp.to_rfc3339(),
+                    r.event_type.clone(),
+                    crate::utils::aggregation::csv_escape(&r.location),
+                    crate::utils::aggregation::csv_escape(r.note.as_deref().unwrap_or("")),
+                    r.data_hash.clone(),
+                ]
+            })
+            .collect();
+
+        Ok(crate::utils::aggregation::to_csv(headers, data_rows))
+    }
+}
diff --git a/backend/src/services/audit_service.rs b/backend/src/services/audit_service.rs
new file mode 100644
index 00000000..786a7ffd
--- /dev/null
+++ b/backend/src/services/audit_service.rs
@@ -0,0 +1,586 @@
+use chrono::{DateTime, Duration, Utc};
+use hmac::{Hmac, Mac};
+use serde::{Deserialize, Serialize};
+use serde_json::Value;
+use sha2::Sha256;
+use sqlx::{FromRow, PgPool, QueryBuilder};
+use uuid::Uuid;
+
+type HmacSha256 = Hmac<Sha256>;
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "snake_case")]
+pub enum AuditEventCategory {
+    UserAction,
+    AuthEvent,
+    SecurityEvent,
+    DataAccess,
+    BusinessEvent,
+    SystemEvent,
+}
+
+impl AuditEventCategory {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            Self::UserAction => "user_action",
+            Self::AuthEvent => "auth_event",
+            Self::SecurityEvent => "security_event",
+            Self::DataAccess => "data_access",
+            Self::BusinessEvent => "business_event",
+            Self::SystemEvent => "system_event",
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
+#[serde(rename_all = "lowercase")]
+pub enum AuditSeverity {
+    Info,
+    Warn,
+    Error,
+}
+
+impl AuditSeverity {
+    pub fn as_str(&self) -> &'static str {
+        match self {
+            Self::Info => "info",
+            Self::Warn => "warn",
+            Self::Error => "error",
+        }
+    }
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct NewAuditEvent {
+    pub correlation_id: Option<String>,
+    pub user_id: Option<Uuid>,
+    pub actor_api_key_id: Option<Uuid>,
+    pub event_category: AuditEventCategory,
+    pub event_type: String,
+    pub severity: AuditSeverity,
+    pub action: String,
+    pub resource_type: Option<String>,
+    pub target_resource_id: Option<String>,
+    pub http_method: Option<String>,
+    pub http_path: Option<String>,
+    pub http_status: Option<u16>,
+    pub success: bool,
+    pub error_code: Option<String>,
+    pub business_context: Option<String>,
+    pub changes: Value,
+    pub ip_address: Option<String>,
+    pub user_agent: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize, FromRow)]
+pub struct AuditLogRecord {
+    pub id: Uuid,
+    pub user_id: Option<Uuid>,
+    pub actor_api_key_id: Option<Uuid>,
+    pub correlation_id: Option<String>,
+    pub event_category: Option<String>,
+    pub event_type: Option<String>,
+    pub severity: Option<String>,
+    pub action: String,
+    pub resource_type: Option<String>,
+    pub target_resource_id: Option<String>,
+    pub http_method: Option<String>,
+    pub http_path: Option<String>,
+    pub http_status: Option<i16>,
+    pub success: Option<bool>,
+    pub error_code: Option<String>,
+    pub business_context: Option<String>,
+    pub changes: Option<Value>,
+    pub ip_address: Option<String>,
+    pub user_agent: Option<String>,
+    pub prev_hash: Option<Vec<u8>>,
+    pub row_hash: Option<Vec<u8>>,
+    pub created_at: DateTime<Utc>,
+}
+
+#[derive(Debug, Clone, Deserialize)]
+pub struct AuditLogQuery {
+    pub user_id: Option<Uuid>,
+    pub actor_api_key_id: Option<Uuid>,
+    pub event_category: Option<String>,
+    pub event_type: Option<String>,
+    pub resource_type: Option<String>,
+    pub target_resource_id: Option<String>,
+    pub success: Option<bool>,
+    pub correlation_id: Option<String>,
+    pub start: Option<DateTime<Utc>>,
+    pub end: Option<DateTime<Utc>>,
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+}
+
+#[derive(Debug, Clone, Serialize)]
+pub struct AuditChainVerification {
+    pub checked: usize,
+    pub valid: bool,
+    pub broken_at: Option<Uuid>,
+}
+
+#[derive(Clone)]
+pub struct AuditService {
+    pool: PgPool,
+    enabled: bool,
+    hmac_key: Vec<u8>,
+    retention_days: i64,
+}
+
+impl AuditService {
+    pub fn new(pool: PgPool, enabled: bool, hmac_key: String, retention_days: i64) -> Self {
+        Self {
+            pool,
+            enabled,
+            hmac_key: hmac_key.into_bytes(),
+            retention_days,
+        }
+    }
+
+    pub async fn log(
+        &self,
+        mut event: NewAuditEvent,
+    ) -> Result<Option<AuditLogRecord>, sqlx::Error> {
+        if !self.enabled {
+            return Ok(None);
+        }
+
+        sanitize_event(&mut event);
+        let prev_hash = self.latest_hash().await?;
+        let row_hash = self.compute_hash(&event, prev_hash.as_deref());
+
+        let record = sqlx::query_as::<_, AuditLogRecord>(
+            r#"
+            INSERT INTO audit_logs (
+                user_id, actor_api_key_id, correlation_id, event_category, event_type,
+                severity, action, resource_type, target_resource_id, http_method,
+                http_path, http_status, success, error_code, business_context,
+                changes, ip_address, user_agent, prev_hash, row_hash, retention_days
+            )
+            VALUES (
+                $1, $2, $3, $4, $5,
+                $6, $7, $8, $9, $10,
+                $11, $12, $13, $14, $15,
+                $16, $17::inet, $18, $19, $20, $21
+            )
+            RETURNING
+                id, user_id, actor_api_key_id, correlation_id, event_category, event_type,
+                severity, action, resource_type, target_resource_id, http_method,
+                http_path, http_status, success, error_code, business_context,
+                changes, ip_address::text, user_agent, prev_hash, row_hash, created_at
+            "#,
+        )
+        .bind(event.user_id)
+        .bind(event.actor_api_key_id)
+        .bind(event.correlation_id)
+        .bind(event.event_category.as_str())
+        .bind(event.event_type)
+        .bind(event.severity.as_str())
+        .bind(event.action)
+        .bind(event.resource_type)
+        .bind(event.target_resource_id)
+        .bind(event.http_method)
+        .bind(event.http_path)
+        .bind(event.http_status.map(|status| status as i16))
+        .bind(event.success)
+        .bind(event.error_code)
+        .bind(event.business_context)
+        .bind(event.changes)
+        .bind(event.ip_address)
+        .bind(event.user_agent)
+        .bind(prev_hash)
+        .bind(row_hash)
+        .bind(self.retention_days as i32)
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(Some(record))
+    }
+
+    pub async fn query(&self, filters: AuditLogQuery) -> Result<Vec<AuditLogRecord>, sqlx::Error> {
+        let mut query = QueryBuilder::new(
+            r#"
+            SELECT
+                id, user_id, actor_api_key_id, correlation_id, event_category, event_type,
+                severity, action, resource_type, target_resource_id, http_method,
+                http_path, http_status, success, error_code, business_context,
+                changes, ip_address::text, user_agent, prev_hash, row_hash, created_at
+            FROM audit_logs
+            WHERE 1 = 1
+            "#,
+        );
+
+        if let Some(user_id) = filters.user_id {
+            query.push(" AND user_id = ");
+            query.push_bind(user_id);
+        }
+        if let Some(actor_api_key_id) = filters.actor_api_key_id {
+            query.push(" AND actor_api_key_id = ");
+            query.push_bind(actor_api_key_id);
+        }
+        if let Some(event_category) = filters.event_category {
+            query.push(" AND event_category = ");
+            query.push_bind(sanitize_log_value(&event_category, 32));
+        }
+        if let Some(event_type) = filters.event_type {
+            query.push(" AND event_type = ");
+            query.push_bind(sanitize_log_value(&event_type, 64));
+        }
+        if let Some(resource_type) = filters.resource_type {
+            query.push(" AND resource_type = ");
+            query.push_bind(sanitize_log_value(&resource_type, 100));
+        }
+        if let Some(target_resource_id) = filters.target_resource_id {
+            query.push(" AND target_resource_id = ");
+            query.push_bind(sanitize_log_value(&target_resource_id, 255));
+        }
+        if let Some(success) = filters.success {
+            query.push(" AND success = ");
+            query.push_bind(success);
+        }
+        if let Some(correlation_id) = filters.correlation_id {
+            query.push(" AND correlation_id = ");
+            query.push_bind(sanitize_log_value(&correlation_id, 128));
+        }
+        if let Some(start) = filters.start {
+            query.push(" AND created_at >= ");
+            query.push_bind(start);
+        }
+        if let Some(end) = filters.end {
+            query.push(" AND created_at <= ");
+            query.push_bind(end);
+        }
+
+        query.push(" ORDER BY created_at DESC LIMIT ");
+        query.push_bind(filters.limit.unwrap_or(100).clamp(1, 500));
+        query.push(" OFFSET ");
+        query.push_bind(filters.offset.unwrap_or(0).max(0));
+
+        query
+            .build_query_as::<AuditLogRecord>()
+            .fetch_all(&self.pool)
+            .await
+    }
+
+    pub async fn purge_expired(&self) -> Result<u64, sqlx::Error> {
+        let result = sqlx::query("DELETE FROM audit_logs WHERE created_at < $1")
+            .bind(Utc::now() - Duration::days(self.retention_days))
+            .execute(&self.pool)
+            .await?;
+
+        Ok(result.rows_affected())
+    }
+
+    pub async fn verify_chain(&self) -> Result<AuditChainVerification, sqlx::Error> {
+        let records = sqlx::query_as::<_, AuditLogRecord>(
+            r#"
+            SELECT
+                id, user_id, actor_api_key_id, correlation_id, event_category, event_type,
+                severity, action, resource_type, target_resource_id, http_method,
+                http_path, http_status, success, error_code, business_context,
+                changes, ip_address::text, user_agent, prev_hash, row_hash, created_at
+            FROM audit_logs
+            WHERE row_hash IS NOT NULL
+            ORDER BY created_at ASC, id ASC
+            "#,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let mut prev_hash: Option<Vec<u8>> = None;
+        for (index, record) in records.iter().enumerate() {
+            if record.prev_hash != prev_hash {
+                return Ok(AuditChainVerification {
+                    checked: index,
+                    valid: false,
+                    broken_at: Some(record.id),
+                });
+            }
+
+            let event = NewAuditEvent::from(record.clone());
+            let expected = self.compute_hash(&event, record.prev_hash.as_deref());
+            if record.row_hash.as_deref() != Some(expected.as_slice()) {
+                return Ok(AuditChainVerification {
+                    checked: index,
+                    valid: false,
+                    broken_at: Some(record.id),
+                });
+            }
+
+            prev_hash = record.row_hash.clone();
+        }
+
+        Ok(AuditChainVerification {
+            checked: records.len(),
+            valid: true,
+            broken_at: None,
+        })
+    }
+
+    async fn latest_hash(&self) -> Result<Option<Vec<u8>>, sqlx::Error> {
+        sqlx::query_scalar::<_, Vec<u8>>(
+            "SELECT row_hash FROM audit_logs WHERE row_hash IS NOT NULL ORDER BY created_at DESC, id DESC LIMIT 1",
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    fn compute_hash(&self, event: &NewAuditEvent, prev_hash: Option<&[u8]>) -> Vec<u8> {
+        compute_event_hmac(&self.hmac_key, event, prev_hash)
+    }
+}
+
+impl From<AuditLogRecord> for NewAuditEvent {
+    fn from(record: AuditLogRecord) -> Self {
+        Self {
+            correlation_id: record.correlation_id,
+            user_id: record.user_id,
+            actor_api_key_id: record.actor_api_key_id,
+            event_category: parse_category(record.event_category.as_deref()),
+            event_type: record.event_type.unwrap_or_else(|| "unknown".to_string()),
+            severity: parse_severity(record.severity.as_deref()),
+            action: record.action,
+            resource_type: record.resource_type,
+            target_resource_id: record.target_resource_id,
+            http_method: record.http_method,
+            http_path: record.http_path,
+            http_status: record.http_status.map(|status| status as u16),
+            success: record.success.unwrap_or(false),
+            error_code: record.error_code,
+            business_context: record.business_context,
+            changes: record.changes.unwrap_or_else(|| serde_json::json!({})),
+            ip_address: record.ip_address,
+            user_agent: record.user_agent,
+        }
+    }
+}
+
+pub fn sanitize_log_value(value: &str, max_len: usize) -> String {
+    let redacted = redact_sensitive_data(value);
+
+    redacted
+        .chars()
+        .filter(|ch| !ch.is_control() || *ch == '\t')
+        .take(max_len)
+        .collect::<String>()
+        .trim()
+        .to_string()
+}
+
+pub fn redact_sensitive_data(value: &str) -> String {
+    let pattern = regex::Regex::new(
+        r"(?i)(bearer\s+|api[_-]?key[=:]\s*|token[=:]\s*|password[=:]\s*)[a-z0-9._~+/=-]+",
+    )
+    .expect("valid audit redaction regex");
+
+    pattern.replace_all(value, "$1[redacted]").to_string()
+}
+
+fn sanitize_event(event: &mut NewAuditEvent) {
+    event.correlation_id = event
+        .correlation_id
+        .take()
+        .map(|value| sanitize_log_value(&value, 128));
+    event.event_type = sanitize_log_value(&event.event_type, 64);
+    event.action = sanitize_log_value(&event.action, 255);
+    event.resource_type = event
+        .resource_type
+        .take()
+        .map(|value| sanitize_log_value(&value, 100));
+    event.target_resource_id = event
+        .target_resource_id
+        .take()
+        .map(|value| sanitize_log_value(&value, 255));
+    event.http_method = event
+        .http_method
+        .take()
+        .map(|value| sanitize_log_value(&value, 8));
+    event.http_path = event
+        .http_path
+        .take()
+        .map(|value| sanitize_log_value(&value, 1024));
+    event.error_code = event
+        .error_code
+        .take()
+        .map(|value| sanitize_log_value(&value, 64));
+    event.business_context = event
+        .business_context
+        .take()
+        .map(|value| sanitize_log_value(&value, 512));
+    event.ip_address = event
+        .ip_address
+        .take()
+        .and_then(|value| sanitize_ip_address(&value));
+    event.user_agent = event
+        .user_agent
+        .take()
+        .map(|value| sanitize_log_value(&value, 512));
+    event.changes = sanitize_json(event.changes.clone());
+}
+
+fn sanitize_ip_address(value: &str) -> Option<String> {
+    let candidate = value.split(',').next().unwrap_or(value).trim();
+    if candidate.parse::<std::net::IpAddr>().is_ok() {
+        Some(candidate.to_string())
+    } else {
+        None
+    }
+}
+
+fn sanitize_json(value: Value) -> Value {
+    match value {
+        Value::String(text) => Value::String(sanitize_log_value(&text, 1024)),
+        Value::Array(values) => Value::Array(values.into_iter().map(sanitize_json).collect()),
+        Value::Object(values) => Value::Object(
+            values
+                .into_iter()
+                .map(|(key, value)| {
+                    let safe_value = if is_sensitive_key(&key) {
+                        Value::String("[redacted]".to_string())
+                    } else {
+                        sanitize_json(value)
+                    };
+                    (sanitize_log_value(&key, 128), safe_value)
+                })
+                .collect(),
+        ),
+        other => other,
+    }
+}
+
+fn is_sensitive_key(key: &str) -> bool {
+    let key = key.to_ascii_lowercase();
+    key.contains("password")
+        || key.contains("token")
+        || key.contains("secret")
+        || key.contains("api_key")
+        || key.contains("authorization")
+}
+
+fn compute_event_hmac(key: &[u8], event: &NewAuditEvent, prev_hash: Option<&[u8]>) -> Vec<u8> {
+    let payload = serde_json::json!({
+        "prev_hash": prev_hash.map(hex::encode),
+        "correlation_id": event.correlation_id,
+        "user_id": event.user_id,
+        "actor_api_key_id": event.actor_api_key_id,
+        "event_category": event.event_category.as_str(),
+        "event_type": event.event_type,
+        "severity": event.severity.as_str(),
+        "action": event.action,
+        "resource_type": event.resource_type,
+        "target_resource_id": event.target_resource_id,
+        "http_method": event.http_method,
+        "http_path": event.http_path,
+        "http_status": event.http_status,
+        "success": event.success,
+        "error_code": event.error_code,
+        "business_context": event.business_context,
+        "changes": event.changes,
+    });
+
+    let mut mac = HmacSha256::new_from_slice(key).expect("HMAC accepts keys of any size");
+    mac.update(payload.to_string().as_bytes());
+    mac.finalize().into_bytes().to_vec()
+}
+
+fn parse_category(value: Option<&str>) -> AuditEventCategory {
+    match value {
+        Some("auth_event") => AuditEventCategory::AuthEvent,
+        Some("security_event") => AuditEventCategory::SecurityEvent,
+        Some("data_access") => AuditEventCategory::DataAccess,
+        Some("business_event") => AuditEventCategory::BusinessEvent,
+        Some("system_event") => AuditEventCategory::SystemEvent,
+        _ => AuditEventCategory::UserAction,
+    }
+}
+
+fn parse_severity(value: Option<&str>) -> AuditSeverity {
+    match value {
+        Some("warn") => AuditSeverity::Warn,
+        Some("error") => AuditSeverity::Error,
+        _ => AuditSeverity::Info,
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn sample_event() -> NewAuditEvent {
+        NewAuditEvent {
+            correlation_id: Some("req-123".to_string()),
+            user_id: Some(Uuid::nil()),
+            actor_api_key_id: None,
+            event_category: AuditEventCategory::UserAction,
+            event_type: "http_request".to_string(),
+            severity: AuditSeverity::Info,
+            action: "GET /api/v1/products".to_string(),
+            resource_type: Some("products".to_string()),
+            target_resource_id: None,
+            http_method: Some("GET".to_string()),
+            http_path: Some("/api/v1/products".to_string()),
+            http_status: Some(200),
+            success: true,
+            error_code: None,
+            business_context: None,
+            changes: serde_json::json!({"query": "all"}),
+            ip_address: Some("127.0.0.1".to_string()),
+            user_agent: Some("test".to_string()),
+        }
+    }
+
+    #[test]
+    fn sanitizes_control_characters_and_redacts_tokens() {
+        let value = sanitize_log_value("Bearer abc123\r\nnext token=secret", 128);
+
+        assert!(!value.contains('\r'));
+        assert!(!value.contains('\n'));
+        assert!(value.contains("Bearer [redacted]"));
+        assert!(value.contains("token=[redacted]"));
+    }
+
+    #[test]
+    fn redacts_sensitive_json_keys() {
+        let value = sanitize_json(serde_json::json!({
+            "password": "secret",
+            "nested": {"api_key": "abc123"},
+            "safe": "visible"
+        }));
+
+        assert_eq!(value["password"], "[redacted]");
+        assert_eq!(value["nested"]["api_key"], "[redacted]");
+        assert_eq!(value["safe"], "visible");
+    }
+
+    #[test]
+    fn hmac_is_deterministic_for_same_event() {
+        let event = sample_event();
+        let first = compute_event_hmac(b"secret", &event, None);
+        let second = compute_event_hmac(b"secret", &event, None);
+
+        assert_eq!(first, second);
+    }
+
+    #[test]
+    fn hmac_changes_when_event_is_tampered() {
+        let event = sample_event();
+        let original = compute_event_hmac(b"secret", &event, None);
+
+        let mut tampered = event;
+        tampered.action = "DELETE /api/v1/products/123".to_string();
+        let changed = compute_event_hmac(b"secret", &tampered, None);
+
+        assert_ne!(original, changed);
+    }
+
+    #[test]
+    fn hmac_chain_depends_on_previous_hash() {
+        let event = sample_event();
+        let first = compute_event_hmac(b"secret", &event, None);
+        let chained = compute_event_hmac(b"secret", &event, Some(&first));
+
+        assert_ne!(first, chained);
+    }
+}
diff --git a/backend/src/services/batch_service.rs b/backend/src/services/batch_service.rs
new file mode 100644
index 00000000..cd5134be
--- /dev/null
+++ b/backend/src/services/batch_service.rs
@@ -0,0 +1,598 @@
+use async_trait::async_trait;
+use sqlx::PgPool;
+use uuid::Uuid;
+use redis::AsyncCommands;
+use crate::models::batch::*;
+
+pub struct BatchService {
+    pool: PgPool,
+    redis_client: redis::Client,
+}
+
+impl BatchService {
+    pub fn new(pool: PgPool, redis_client: redis::Client) -> Self {
+        Self { pool, redis_client }
+    }
+
+    async fn invalidate_batch_cache(&self, batch_id: &Uuid) {
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            let _: Result<(), _> = conn.del(format!("cache:batch:{}", batch_id)).await;
+        }
+    }
+}
+
+#[async_trait]
+pub trait BatchRepository {
+    async fn create_batch(&self, batch: NewBatch) -> Result<Batch, sqlx::Error>;
+    async fn get_batch(&self, id: Uuid) -> Result<Option<Batch>, sqlx::Error>;
+    async fn get_batch_by_number(&self, batch_number: &str) -> Result<Option<Batch>, sqlx::Error>;
+    async fn update_batch(&self, id: Uuid, batch: Batch) -> Result<Batch, sqlx::Error>;
+    async fn delete_batch(&self, id: Uuid) -> Result<(), sqlx::Error>;
+    async fn list_batches(
+        &self,
+        offset: i64,
+        limit: i64,
+        filters: Option<BatchFilters>,
+    ) -> Result<Vec<Batch>, sqlx::Error>;
+    async fn count_batches(&self, filters: Option<BatchFilters>) -> Result<i64, sqlx::Error>;
+    
+    // Genealogy
+    async fn create_genealogy(&self, genealogy: NewBatchGenealogy) -> Result<BatchGenealogy, sqlx::Error>;
+    async fn get_genealogy_tree(&self, batch_id: Uuid) -> Result<BatchGenealogyTree, sqlx::Error>;
+    async fn get_batch_parents(&self, batch_id: Uuid) -> Result<Vec<BatchGenealogyNode>, sqlx::Error>;
+    async fn get_batch_children(&self, batch_id: Uuid) -> Result<Vec<BatchGenealogyNode>, sqlx::Error>;
+    
+    // Quality attributes
+    async fn create_quality_attribute(&self, attribute: NewBatchQualityAttribute) -> Result<BatchQualityAttribute, sqlx::Error>;
+    async fn get_quality_attributes(&self, batch_id: Uuid) -> Result<Vec<BatchQualityAttribute>, sqlx::Error>;
+    async fn update_quality_attribute(&self, id: Uuid, attribute: BatchQualityAttribute) -> Result<BatchQualityAttribute, sqlx::Error>;
+    
+    // Recalls
+    async fn create_recall(&self, recall: NewBatchRecall) -> Result<BatchRecall, sqlx::Error>;
+    async fn get_recall(&self, id: Uuid) -> Result<Option<BatchRecall>, sqlx::Error>;
+    async fn get_batch_recalls(&self, batch_id: Uuid) -> Result<Vec<BatchRecall>, sqlx::Error>;
+    async fn update_recall(&self, id: Uuid, recall: BatchRecall) -> Result<BatchRecall, sqlx::Error>;
+    async fn list_active_recalls(&self, offset: i64, limit: i64) -> Result<Vec<BatchRecall>, sqlx::Error>;
+    
+    // Inventory
+    async fn create_inventory_transaction(&self, inventory: NewBatchInventory) -> Result<BatchInventory, sqlx::Error>;
+    async fn get_batch_inventory(&self, batch_id: Uuid) -> Result<Vec<BatchInventory>, sqlx::Error>;
+    async fn get_inventory_by_location(&self, location_id: &str, offset: i64, limit: i64) -> Result<Vec<BatchInventory>, sqlx::Error>;
+}
+
+#[async_trait]
+impl BatchRepository for BatchService {
+    async fn create_batch(&self, batch: NewBatch) -> Result<Batch, sqlx::Error> {
+        let created = sqlx::query_as!(
+            Batch,
+            r#"
+            INSERT INTO batches (
+                batch_number, product_id, lot_number, production_date, expiry_date,
+                quantity_produced, quantity_available, status, production_location,
+                quality_grade, quality_score, metadata, created_by, updated_by
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $13)
+            RETURNING *
+            "#,
+            batch.batch_number,
+            batch.product_id,
+            batch.lot_number,
+            batch.production_date,
+            batch.expiry_date,
+            batch.quantity_produced,
+            batch.quantity_available,
+            batch.status as BatchStatus,
+            batch.production_location,
+            batch.quality_grade,
+            batch.quality_score,
+            batch.metadata,
+            batch.created_by
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(created)
+    }
+
+    async fn get_batch(&self, id: Uuid) -> Result<Option<Batch>, sqlx::Error> {
+        let cache_key = format!("cache:batch:{}", id);
+        
+        if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+            if let Ok(cached) = conn.get::<_, String>(&cache_key).await {
+                if let Ok(batch) = serde_json::from_str::<Batch>(&cached) {
+                    return Ok(Some(batch));
+                }
+            }
+        }
+
+        let batch = sqlx::query_as!(
+            Batch,
+            "SELECT * FROM batches WHERE id = $1",
+            id
+        )
+        .fetch_optional(&self.pool)
+        .await?;
+
+        if let Some(ref b) = batch {
+            if let Ok(mut conn) = self.redis_client.get_multiplexed_tokio_connection().await {
+                if let Ok(serialized) = serde_json::to_string(b) {
+                    let _: Result<(), _> = conn.set_ex(&cache_key, serialized, 3600).await;
+                }
+            }
+        }
+
+        Ok(batch)
+    }
+
+    async fn get_batch_by_number(&self, batch_number: &str) -> Result<Option<Batch>, sqlx::Error> {
+        sqlx::query_as!(
+            Batch,
+            "SELECT * FROM batches WHERE batch_number = $1",
+            batch_number
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    async fn update_batch(&self, id: Uuid, batch: Batch) -> Result<Batch, sqlx::Error> {
+        let updated = sqlx::query_as!(
+            Batch,
+            r#"
+            UPDATE batches SET
+                batch_number = $2,
+                product_id = $3,
+                lot_number = $4,
+                production_date = $5,
+                expiry_date = $6,
+                quantity_produced = $7,
+                quantity_available = $8,
+                status = $9,
+                production_location = $10,
+                quality_grade = $11,
+                quality_score = $12,
+                metadata = $13,
+                updated_by = $14
+            WHERE id = $1
+            RETURNING *
+            "#,
+            id,
+            batch.batch_number,
+            batch.product_id,
+            batch.lot_number,
+            batch.production_date,
+            batch.expiry_date,
+            batch.quantity_produced,
+            batch.quantity_available,
+            batch.status as BatchStatus,
+            batch.production_location,
+            batch.quality_grade,
+            batch.quality_score,
+            batch.metadata,
+            batch.updated_by
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        self.invalidate_batch_cache(&id).await;
+
+        Ok(updated)
+    }
+
+    async fn delete_batch(&self, id: Uuid) -> Result<(), sqlx::Error> {
+        sqlx::query!("DELETE FROM batches WHERE id = $1", id)
+            .execute(&self.pool)
+            .await?;
+        
+        self.invalidate_batch_cache(&id).await;
+        
+        Ok(())
+    }
+
+    async fn list_batches(
+        &self,
+        offset: i64,
+        limit: i64,
+        filters: Option<BatchFilters>,
+    ) -> Result<Vec<Batch>, sqlx::Error> {
+        let mut query = "SELECT * FROM batches WHERE 1=1".to_string();
+        let mut bindings = Vec::new();
+        let mut bind_index = 1;
+
+        if let Some(f) = filters {
+            if let Some(product_id) = f.product_id {
+                query.push_str(&format!(" AND product_id = ${}", bind_index));
+                bindings.push(product_id);
+                bind_index += 1;
+            }
+            if let Some(lot_number) = f.lot_number {
+                query.push_str(&format!(" AND lot_number = ${}", bind_index));
+                bindings.push(lot_number);
+                bind_index += 1;
+            }
+            if let Some(status) = f.status {
+                query.push_str(&format!(" AND status = ${}", bind_index));
+                bindings.push(status.to_string());
+                bind_index += 1;
+            }
+            if let Some(quality_grade) = f.quality_grade {
+                query.push_str(&format!(" AND quality_grade = ${}", bind_index));
+                bindings.push(quality_grade);
+                bind_index += 1;
+            }
+            if let Some(after) = f.production_after {
+                query.push_str(&format!(" AND production_date >= ${}", bind_index));
+                bindings.push(after.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(before) = f.production_before {
+                query.push_str(&format!(" AND production_date <= ${}", bind_index));
+                bindings.push(before.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(after) = f.expiry_after {
+                query.push_str(&format!(" AND expiry_date >= ${}", bind_index));
+                bindings.push(after.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(before) = f.expiry_before {
+                query.push_str(&format!(" AND expiry_date <= ${}", bind_index));
+                bindings.push(before.to_rfc3339());
+                bind_index += 1;
+            }
+        }
+
+        query.push_str(&format!(" ORDER BY production_date DESC LIMIT ${} OFFSET ${}", bind_index, bind_index + 1));
+        bindings.push(limit.to_string());
+        bindings.push(offset.to_string());
+
+        let mut q = sqlx::QueryBuilder::new(query);
+        for binding in bindings {
+            q = q.bind(binding);
+        }
+
+        q.build_query_as::<Batch>()
+            .fetch_all(&self.pool)
+            .await
+    }
+
+    async fn count_batches(&self, filters: Option<BatchFilters>) -> Result<i64, sqlx::Error> {
+        let mut query = "SELECT COUNT(*) FROM batches WHERE 1=1".to_string();
+        let mut bindings = Vec::new();
+        let mut bind_index = 1;
+
+        if let Some(f) = filters {
+            if let Some(product_id) = f.product_id {
+                query.push_str(&format!(" AND product_id = ${}", bind_index));
+                bindings.push(product_id);
+                bind_index += 1;
+            }
+            if let Some(lot_number) = f.lot_number {
+                query.push_str(&format!(" AND lot_number = ${}", bind_index));
+                bindings.push(lot_number);
+                bind_index += 1;
+            }
+            if let Some(status) = f.status {
+                query.push_str(&format!(" AND status = ${}", bind_index));
+                bindings.push(status.to_string());
+                bind_index += 1;
+            }
+            if let Some(quality_grade) = f.quality_grade {
+                query.push_str(&format!(" AND quality_grade = ${}", bind_index));
+                bindings.push(quality_grade);
+                bind_index += 1;
+            }
+            if let Some(after) = f.production_after {
+                query.push_str(&format!(" AND production_date >= ${}", bind_index));
+                bindings.push(after.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(before) = f.production_before {
+                query.push_str(&format!(" AND production_date <= ${}", bind_index));
+                bindings.push(before.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(after) = f.expiry_after {
+                query.push_str(&format!(" AND expiry_date >= ${}", bind_index));
+                bindings.push(after.to_rfc3339());
+                bind_index += 1;
+            }
+            if let Some(before) = f.expiry_before {
+                query.push_str(&format!(" AND expiry_date <= ${}", bind_index));
+                bindings.push(before.to_rfc3339());
+                bind_index += 1;
+            }
+        }
+
+        let mut q = sqlx::QueryBuilder::new(query);
+        for binding in bindings {
+            q = q.bind(binding);
+        }
+
+        q.build_scalar::<i64>()
+            .fetch_one(&self.pool)
+            .await
+    }
+
+    async fn create_genealogy(&self, genealogy: NewBatchGenealogy) -> Result<BatchGenealogy, sqlx::Error> {
+        let created = sqlx::query_as!(
+            BatchGenealogy,
+            r#"
+            INSERT INTO batch_genealogy (
+                parent_batch_id, child_batch_id, relationship_type,
+                quantity_transferred, notes, metadata
+            ) VALUES ($1, $2, $3, $4, $5, $6)
+            RETURNING *
+            "#,
+            genealogy.parent_batch_id,
+            genealogy.child_batch_id,
+            genealogy.relationship_type,
+            genealogy.quantity_transferred,
+            genealogy.notes,
+            genealogy.metadata
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(created)
+    }
+
+    async fn get_genealogy_tree(&self, batch_id: Uuid) -> Result<BatchGenealogyTree, sqlx::Error> {
+        let batch = self.get_batch(batch_id).await?
+            .ok_or_else(|| sqlx::Error::RowNotFound)?;
+
+        let parents = self.get_batch_parents(batch_id).await?;
+        let children = self.get_batch_children(batch_id).await?;
+
+        Ok(BatchGenealogyTree {
+            batch,
+            parents,
+            children,
+        })
+    }
+
+    async fn get_batch_parents(&self, batch_id: Uuid) -> Result<Vec<BatchGenealogyNode>, sqlx::Error> {
+        let genealogies = sqlx::query_as!(
+            BatchGenealogy,
+            "SELECT * FROM batch_genealogy WHERE child_batch_id = $1",
+            batch_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let mut nodes = Vec::new();
+        for genealogy in genealogies {
+            if let Some(related_batch) = self.get_batch(genealogy.parent_batch_id).await? {
+                nodes.push(BatchGenealogyNode {
+                    genealogy,
+                    related_batch,
+                });
+            }
+        }
+
+        Ok(nodes)
+    }
+
+    async fn get_batch_children(&self, batch_id: Uuid) -> Result<Vec<BatchGenealogyNode>, sqlx::Error> {
+        let genealogies = sqlx::query_as!(
+            BatchGenealogy,
+            "SELECT * FROM batch_genealogy WHERE parent_batch_id = $1",
+            batch_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let mut nodes = Vec::new();
+        for genealogy in genealogies {
+            if let Some(related_batch) = self.get_batch(genealogy.child_batch_id).await? {
+                nodes.push(BatchGenealogyNode {
+                    genealogy,
+                    related_batch,
+                });
+            }
+        }
+
+        Ok(nodes)
+    }
+
+    async fn create_quality_attribute(&self, attribute: NewBatchQualityAttribute) -> Result<BatchQualityAttribute, sqlx::Error> {
+        let is_within_tolerance = if let (Some(min), Some(max), Some(value)) = (
+            &attribute.tolerance_min,
+            &attribute.tolerance_max,
+            &attribute.attribute_value
+        ) {
+            if let Ok(parsed_value) = value.parse::<rust_decimal::Decimal>() {
+                parsed_value >= *min && parsed_value <= *max
+            } else {
+                true
+            }
+        } else {
+            true
+        };
+
+        let created = sqlx::query_as!(
+            BatchQualityAttribute,
+            r#"
+            INSERT INTO batch_quality_attributes (
+                batch_id, attribute_name, attribute_value, measurement_unit,
+                tolerance_min, tolerance_max, measured_by, notes, is_within_tolerance
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+            RETURNING *
+            "#,
+            attribute.batch_id,
+            attribute.attribute_name,
+            attribute.attribute_value,
+            attribute.measurement_unit,
+            attribute.tolerance_min,
+            attribute.tolerance_max,
+            attribute.measured_by,
+            attribute.notes,
+            is_within_tolerance
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(created)
+    }
+
+    async fn get_quality_attributes(&self, batch_id: Uuid) -> Result<Vec<BatchQualityAttribute>, sqlx::Error> {
+        sqlx::query_as!(
+            BatchQualityAttribute,
+            "SELECT * FROM batch_quality_attributes WHERE batch_id = $1 ORDER BY measured_at DESC",
+            batch_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn update_quality_attribute(&self, id: Uuid, attribute: BatchQualityAttribute) -> Result<BatchQualityAttribute, sqlx::Error> {
+        sqlx::query_as!(
+            BatchQualityAttribute,
+            r#"
+            UPDATE batch_quality_attributes SET
+                attribute_name = $2,
+                attribute_value = $3,
+                measurement_unit = $4,
+                tolerance_min = $5,
+                tolerance_max = $6,
+                measured_by = $7,
+                notes = $8,
+                is_within_tolerance = $9
+            WHERE id = $1
+            RETURNING *
+            "#,
+            id,
+            attribute.attribute_name,
+            attribute.attribute_value,
+            attribute.measurement_unit,
+            attribute.tolerance_min,
+            attribute.tolerance_max,
+            attribute.measured_by,
+            attribute.notes,
+            attribute.is_within_tolerance
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    async fn create_recall(&self, recall: NewBatchRecall) -> Result<BatchRecall, sqlx::Error> {
+        let created = sqlx::query_as!(
+            BatchRecall,
+            r#"
+            INSERT INTO batch_recalls (
+                batch_id, recall_type, recall_reason, initiated_by,
+                severity, affected_quantity, metadata
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7)
+            RETURNING *
+            "#,
+            recall.batch_id,
+            recall.recall_type,
+            recall.recall_reason,
+            recall.initiated_by,
+            recall.severity,
+            recall.affected_quantity,
+            recall.metadata
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(created)
+    }
+
+    async fn get_recall(&self, id: Uuid) -> Result<Option<BatchRecall>, sqlx::Error> {
+        sqlx::query_as!(
+            BatchRecall,
+            "SELECT * FROM batch_recalls WHERE id = $1",
+            id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    async fn get_batch_recalls(&self, batch_id: Uuid) -> Result<Vec<BatchRecall>, sqlx::Error> {
+        sqlx::query_as!(
+            BatchRecall,
+            "SELECT * FROM batch_recalls WHERE batch_id = $1 ORDER BY recall_date DESC",
+            batch_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn update_recall(&self, id: Uuid, recall: BatchRecall) -> Result<BatchRecall, sqlx::Error> {
+        sqlx::query_as!(
+            BatchRecall,
+            r#"
+            UPDATE batch_recalls SET
+                status = $2,
+                recovered_quantity = $3,
+                notification_sent = $4,
+                public_announcement = $5
+            WHERE id = $1
+            RETURNING *
+            "#,
+            id,
+            recall.status,
+            recall.recovered_quantity,
+            recall.notification_sent,
+            recall.public_announcement
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    async fn list_active_recalls(&self, offset: i64, limit: i64) -> Result<Vec<BatchRecall>, sqlx::Error> {
+        sqlx::query_as!(
+            BatchRecall,
+            "SELECT * FROM batch_recalls WHERE status = 'active' ORDER BY recall_date DESC LIMIT $1 OFFSET $2",
+            limit,
+            offset
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn create_inventory_transaction(&self, inventory: NewBatchInventory) -> Result<BatchInventory, sqlx::Error> {
+        let created = sqlx::query_as!(
+            BatchInventory,
+            r#"
+            INSERT INTO batch_inventory (
+                batch_id, location_id, quantity, transaction_type,
+                reference_id, performed_by, notes
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7)
+            RETURNING *
+            "#,
+            inventory.batch_id,
+            inventory.location_id,
+            inventory.quantity,
+            inventory.transaction_type,
+            inventory.reference_id,
+            inventory.performed_by,
+            inventory.notes
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(created)
+    }
+
+    async fn get_batch_inventory(&self, batch_id: Uuid) -> Result<Vec<BatchInventory>, sqlx::Error> {
+        sqlx::query_as!(
+            BatchInventory,
+            "SELECT * FROM batch_inventory WHERE batch_id = $1 ORDER BY transaction_date DESC",
+            batch_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    async fn get_inventory_by_location(&self, location_id: &str, offset: i64, limit: i64) -> Result<Vec<BatchInventory>, sqlx::Error> {
+        sqlx::query_as!(
+            BatchInventory,
+            "SELECT * FROM batch_inventory WHERE location_id = $1 ORDER BY transaction_date DESC LIMIT $2 OFFSET $3",
+            location_id,
+            limit,
+            offset
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+}
diff --git a/backend/src/services/carbon.rs b/backend/src/services/carbon.rs
new file mode 100644
index 00000000..c94a84e4
--- /dev/null
+++ b/backend/src/services/carbon.rs
@@ -0,0 +1,704 @@
+use chrono::{DateTime, Utc};
+use sqlx::PgPool;
+use uuid::Uuid;
+
+use crate::error::AppError;
+use crate::models::carbon::{
+    CalculateFootprintRequest, CarbonCredit, CarbonFootprint, CarbonReport, CarbonTrade,
+    CarbonVerification, CreateTradeRequest, FootprintBreakdown, GenerateCreditRequest,
+    GenerateReportRequest, ListCreditsQuery, ListTradesQuery, MarketSummary,
+    PurchaseCreditRequest, RequestVerificationRequest, RetireCreditRequest,
+};
+use crate::services::carbon_calculator;
+
+pub struct CarbonService {
+    pool: PgPool,
+}
+
+impl CarbonService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    // ── Footprint ─────────────────────────────────────────────────────────────
+
+    /// Calculate and persist a carbon footprint record for a product/event.
+    pub async fn calculate_footprint(
+        &self,
+        req: &CalculateFootprintRequest,
+    ) -> Result<CarbonFootprint, AppError> {
+        let breakdown = carbon_calculator::calculate(req);
+
+        let record = sqlx::query_as!(
+            CarbonFootprint,
+            r#"
+            INSERT INTO carbon_footprints (
+                product_id, tracking_event_id, calculation_method,
+                transport_emissions, manufacturing_emissions, packaging_emissions,
+                storage_emissions, total_emissions,
+                baseline_emissions, emissions_reduction, reduction_percentage,
+                distance_km, transport_mode, energy_source, raw_data
+            ) VALUES (
+                $1, $2, 'ghg_protocol',
+                $3, $4, $5, $6, $7,
+                $8, $9, $10,
+                $11, $12, $13, $14
+            )
+            RETURNING *
+            "#,
+            req.product_id,
+            req.tracking_event_id,
+            breakdown.transport_emissions,
+            breakdown.manufacturing_emissions,
+            breakdown.packaging_emissions,
+            breakdown.storage_emissions,
+            breakdown.total_emissions,
+            req.baseline_emissions,
+            breakdown.emissions_reduction,
+            breakdown.reduction_percentage,
+            req.distance_km,
+            req.transport_mode,
+            req.energy_source,
+            serde_json::to_value(req).unwrap_or_default(),
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(record)
+    }
+
+    /// Get all footprint records for a product.
+    pub async fn list_footprints(
+        &self,
+        product_id: &str,
+    ) -> Result<Vec<CarbonFootprint>, AppError> {
+        let records = sqlx::query_as!(
+            CarbonFootprint,
+            "SELECT * FROM carbon_footprints WHERE product_id = $1 ORDER BY calculated_at DESC",
+            product_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(records)
+    }
+
+    /// Preview calculation without persisting.
+    pub fn preview_footprint(&self, req: &CalculateFootprintRequest) -> FootprintBreakdown {
+        carbon_calculator::calculate(req)
+    }
+
+    // ── Credits ───────────────────────────────────────────────────────────────
+
+    /// Generate a carbon credit from a verified footprint reduction.
+    pub async fn generate_credit(
+        &self,
+        owner_id: Uuid,
+        req: &GenerateCreditRequest,
+    ) -> Result<CarbonCredit, AppError> {
+        // Fetch the footprint to validate eligible credits
+        let footprint = sqlx::query_as!(
+            CarbonFootprint,
+            "SELECT * FROM carbon_footprints WHERE id = $1",
+            req.footprint_id
+        )
+        .fetch_optional(&self.pool)
+        .await?
+        .ok_or_else(|| AppError::NotFound("Footprint record not found".into()))?;
+
+        let breakdown = carbon_calculator::calculate(&CalculateFootprintRequest {
+            product_id: footprint.product_id.clone(),
+            tracking_event_id: footprint.tracking_event_id,
+            transport_mode: footprint.transport_mode.clone(),
+            distance_km: footprint.distance_km,
+            energy_source: footprint.energy_source.clone(),
+            weight_kg: None,
+            packaging_type: None,
+            storage_hours: None,
+            baseline_emissions: footprint.baseline_emissions,
+        });
+
+        if breakdown.eligible_credits <= 0.0 {
+            return Err(AppError::Validation(
+                "Footprint does not meet minimum reduction threshold for credit generation".into(),
+            ));
+        }
+
+        let serial = generate_serial_number(req.vintage_year);
+        let credit_type = req.credit_type.as_deref().unwrap_or("verified_reduction");
+        let standard = req.standard.as_deref().unwrap_or("GHG_PROTOCOL");
+
+        let credit = sqlx::query_as!(
+            CarbonCredit,
+            r#"
+            INSERT INTO carbon_credits (
+                owner_id, product_id, serial_number, vintage_year,
+                credit_type, standard, quantity, price_per_tonne,
+                status, registry_id, verification_body
+            ) VALUES (
+                $1, $2, $3, $4,
+                $5, $6, $7, $8,
+                'pending', $9, $10
+            )
+            RETURNING *
+            "#,
+            owner_id,
+            req.product_id,
+            serial,
+            req.vintage_year,
+            credit_type,
+            standard,
+            breakdown.eligible_credits,
+            req.price_per_tonne,
+            req.registry_id,
+            req.verification_body,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(credit)
+    }
+
+    pub async fn get_credit(&self, id: Uuid) -> Result<CarbonCredit, AppError> {
+        sqlx::query_as!(CarbonCredit, "SELECT * FROM carbon_credits WHERE id = $1", id)
+            .fetch_optional(&self.pool)
+            .await?
+            .ok_or_else(|| AppError::NotFound(format!("Credit {} not found", id)))
+    }
+
+    pub async fn list_credits(
+        &self,
+        owner_id: Uuid,
+        query: &ListCreditsQuery,
+    ) -> Result<Vec<CarbonCredit>, AppError> {
+        let offset = query.offset.unwrap_or(0);
+        let limit = query.limit.unwrap_or(50).min(200);
+
+        let records = sqlx::query_as!(
+            CarbonCredit,
+            r#"
+            SELECT * FROM carbon_credits
+            WHERE owner_id = $1
+              AND ($2::TEXT IS NULL OR status = $2)
+              AND ($3::INT IS NULL OR vintage_year = $3)
+              AND ($4::TEXT IS NULL OR standard = $4)
+            ORDER BY created_at DESC
+            LIMIT $5 OFFSET $6
+            "#,
+            owner_id,
+            query.status,
+            query.vintage_year,
+            query.standard,
+            limit,
+            offset,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        Ok(records)
+    }
+
+    /// Retire a credit (permanently remove from circulation).
+    pub async fn retire_credit(
+        &self,
+        owner_id: Uuid,
+        req: &RetireCreditRequest,
+    ) -> Result<CarbonCredit, AppError> {
+        let credit = self.get_credit(req.credit_id).await?;
+
+        if credit.owner_id != owner_id {
+            return Err(AppError::Forbidden("You do not own this credit".into()));
+        }
+        if credit.status == "retired" {
+            return Err(AppError::Validation("Credit is already retired".into()));
+        }
+
+        let updated = sqlx::query_as!(
+            CarbonCredit,
+            r#"
+            UPDATE carbon_credits
+            SET status = 'retired', retired_at = NOW(), retirement_reason = $2, updated_at = NOW()
+            WHERE id = $1
+            RETURNING *
+            "#,
+            req.credit_id,
+            req.reason,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(updated)
+    }
+
+    // ── Marketplace ───────────────────────────────────────────────────────────
+
+    /// List a credit for sale on the marketplace.
+    pub async fn create_trade(
+        &self,
+        seller_id: Uuid,
+        req: &CreateTradeRequest,
+    ) -> Result<CarbonTrade, AppError> {
+        let credit = self.get_credit(req.credit_id).await?;
+
+        if credit.owner_id != seller_id {
+            return Err(AppError::Forbidden("You do not own this credit".into()));
+        }
+        if !["verified", "pending"].contains(&credit.status.as_str()) {
+            return Err(AppError::Validation(
+                "Only verified or pending credits can be listed for trade".into(),
+            ));
+        }
+        if req.quantity <= 0.0 || req.quantity > credit.quantity {
+            return Err(AppError::Validation(
+                "Trade quantity must be positive and not exceed credit quantity".into(),
+            ));
+        }
+
+        let total_amount = req.quantity * req.price_per_tonne;
+        let trade_type = req.trade_type.as_deref().unwrap_or("spot");
+
+        let trade = sqlx::query_as!(
+            CarbonTrade,
+            r#"
+            INSERT INTO carbon_trades (
+                credit_id, seller_id, quantity, price_per_tonne,
+                total_amount, trade_type, status, notes, expires_at
+            ) VALUES (
+                $1, $2, $3, $4,
+                $5, $6, 'open', $7, $8
+            )
+            RETURNING *
+            "#,
+            req.credit_id,
+            seller_id,
+            req.quantity,
+            req.price_per_tonne,
+            total_amount,
+            trade_type,
+            req.notes,
+            req.expires_at,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Mark credit as listed
+        sqlx::query!(
+            "UPDATE carbon_credits SET status = 'listed', updated_at = NOW() WHERE id = $1",
+            req.credit_id
+        )
+        .execute(&self.pool)
+        .await?;
+
+        Ok(trade)
+    }
+
+    /// Purchase credits from an open trade listing.
+    pub async fn purchase_credit(
+        &self,
+        buyer_id: Uuid,
+        req: &PurchaseCreditRequest,
+    ) -> Result<CarbonTrade, AppError> {
+        let trade = sqlx::query_as!(
+            CarbonTrade,
+            "SELECT * FROM carbon_trades WHERE id = $1",
+            req.trade_id
+        )
+        .fetch_optional(&self.pool)
+        .await?
+        .ok_or_else(|| AppError::NotFound("Trade not found".into()))?;
+
+        if trade.status != "open" {
+            return Err(AppError::Validation("Trade is not open for purchase".into()));
+        }
+        if trade.seller_id == buyer_id {
+            return Err(AppError::Validation("Cannot purchase your own listing".into()));
+        }
+        if req.quantity <= 0.0 || req.quantity > trade.quantity {
+            return Err(AppError::Validation(
+                "Purchase quantity must be positive and not exceed listed quantity".into(),
+            ));
+        }
+
+        let total = req.quantity * trade.price_per_tonne;
+        let platform_fee = total * 0.025; // 2.5% platform fee
+
+        let settled = sqlx::query_as!(
+            CarbonTrade,
+            r#"
+            UPDATE carbon_trades
+            SET buyer_id = $2, status = 'settled', quantity = $3,
+                total_amount = $4, platform_fee = $5,
+                settlement_date = NOW(), updated_at = NOW()
+            WHERE id = $1
+            RETURNING *
+            "#,
+            req.trade_id,
+            buyer_id,
+            req.quantity,
+            total,
+            platform_fee,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Transfer credit ownership
+        sqlx::query!(
+            "UPDATE carbon_credits SET owner_id = $1, status = 'sold', updated_at = NOW() WHERE id = $2",
+            buyer_id,
+            trade.credit_id,
+        )
+        .execute(&self.pool)
+        .await?;
+
+        Ok(settled)
+    }
+
+    pub async fn list_marketplace(
+        &self,
+        query: &ListTradesQuery,
+    ) -> Result<Vec<CarbonTrade>, AppError> {
+        let offset = query.offset.unwrap_or(0);
+        let limit = query.limit.unwrap_or(50).min(200);
+
+        let trades = sqlx::query_as!(
+            CarbonTrade,
+            r#"
+            SELECT * FROM carbon_trades
+            WHERE ($1::TEXT IS NULL OR status = $1)
+              AND ($2::TEXT IS NULL OR trade_type = $2)
+            ORDER BY created_at DESC
+            LIMIT $3 OFFSET $4
+            "#,
+            query.status,
+            query.trade_type,
+            limit,
+            offset,
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        Ok(trades)
+    }
+
+    pub async fn get_market_summary(&self) -> Result<MarketSummary, AppError> {
+        let row = sqlx::query!(
+            r#"
+            SELECT
+                COALESCE(SUM(quantity) FILTER (WHERE status NOT IN ('retired','cancelled')), 0) AS total_available,
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'listed'), 0)                    AS total_listed,
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'sold'), 0)                      AS total_sold,
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'retired'), 0)                   AS total_retired
+            FROM carbon_credits
+            "#
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let price_row = sqlx::query!(
+            r#"
+            SELECT
+                COALESCE(AVG(price_per_tonne), 0)   AS avg_price,
+                COALESCE(SUM(total_amount), 0)       AS total_volume,
+                COUNT(*) FILTER (WHERE status = 'open') AS open_trades
+            FROM carbon_trades
+            "#
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let recent_trades = sqlx::query_as!(
+            CarbonTrade,
+            "SELECT * FROM carbon_trades WHERE status = 'settled' ORDER BY updated_at DESC LIMIT 5"
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        Ok(MarketSummary {
+            total_credits_available: row.total_available.unwrap_or_default(),
+            total_credits_listed: row.total_listed.unwrap_or_default(),
+            total_credits_sold: row.total_sold.unwrap_or_default(),
+            total_credits_retired: row.total_retired.unwrap_or_default(),
+            avg_price_per_tonne: price_row.avg_price.unwrap_or_default(),
+            total_market_volume_usd: price_row.total_volume.unwrap_or_default(),
+            open_trades: price_row.open_trades.unwrap_or(0),
+            recent_trades,
+        })
+    }
+
+    // ── Verification ──────────────────────────────────────────────────────────
+
+    pub async fn request_verification(
+        &self,
+        requester_id: Uuid,
+        req: &RequestVerificationRequest,
+    ) -> Result<CarbonVerification, AppError> {
+        let credit = self.get_credit(req.credit_id).await?;
+        if credit.owner_id != requester_id {
+            return Err(AppError::Forbidden("You do not own this credit".into()));
+        }
+
+        let verification = sqlx::query_as!(
+            CarbonVerification,
+            r#"
+            INSERT INTO carbon_verifications (
+                credit_id, requested_by, verifier_name,
+                verifier_accreditation, status, methodology, scope
+            ) VALUES ($1, $2, $3, $4, 'requested', $5, $6)
+            RETURNING *
+            "#,
+            req.credit_id,
+            requester_id,
+            req.verifier_name,
+            req.verifier_accreditation,
+            req.methodology,
+            req.scope,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(verification)
+    }
+
+    pub async fn list_verifications(
+        &self,
+        credit_id: Uuid,
+    ) -> Result<Vec<CarbonVerification>, AppError> {
+        let records = sqlx::query_as!(
+            CarbonVerification,
+            "SELECT * FROM carbon_verifications WHERE credit_id = $1 ORDER BY created_at DESC",
+            credit_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(records)
+    }
+
+    // ── Reporting ─────────────────────────────────────────────────────────────
+
+    pub async fn generate_report(
+        &self,
+        owner_id: Uuid,
+        req: &GenerateReportRequest,
+    ) -> Result<CarbonReport, AppError> {
+        // Aggregate emissions for the period
+        let emissions_row = sqlx::query!(
+            r#"
+            SELECT
+                COALESCE(SUM(cf.total_emissions), 0)    AS total_emissions,
+                COALESCE(SUM(cf.emissions_reduction), 0) AS total_reductions
+            FROM carbon_footprints cf
+            JOIN products p ON p.id = cf.product_id
+            WHERE p.owner_address IN (
+                SELECT stellar_address FROM users WHERE id = $1 AND stellar_address IS NOT NULL
+            )
+            AND cf.calculated_at BETWEEN $2 AND $3
+            "#,
+            owner_id,
+            req.period_start,
+            req.period_end,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Aggregate credits for the period
+        let credits_row = sqlx::query!(
+            r#"
+            SELECT
+                COALESCE(SUM(quantity), 0)                                          AS generated,
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'retired'), 0)        AS retired,
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'sold'), 0)           AS sold
+            FROM carbon_credits
+            WHERE owner_id = $1
+              AND created_at BETWEEN $2 AND $3
+            "#,
+            owner_id,
+            req.period_start,
+            req.period_end,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let revenue_row = sqlx::query!(
+            r#"
+            SELECT COALESCE(SUM(total_amount), 0) AS revenue
+            FROM carbon_trades
+            WHERE seller_id = $1
+              AND status = 'settled'
+              AND settlement_date BETWEEN $2 AND $3
+            "#,
+            owner_id,
+            req.period_start,
+            req.period_end,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let total_emissions = emissions_row.total_emissions.unwrap_or_default();
+        let total_reductions = emissions_row.total_reductions.unwrap_or_default();
+        let net_emissions = total_emissions - total_reductions;
+
+        let report_type = req.report_type.as_deref().unwrap_or("custom");
+
+        let summary = serde_json::json!({
+            "methodology": "GHG Protocol",
+            "scope": "Scope 1, 2, 3 supply chain",
+            "period": {
+                "start": req.period_start,
+                "end": req.period_end,
+            },
+            "carbon_intensity": if total_emissions > 0.0 {
+                total_reductions / total_emissions * 100.0
+            } else { 0.0 },
+        });
+
+        let report = sqlx::query_as!(
+            CarbonReport,
+            r#"
+            INSERT INTO carbon_reports (
+                owner_id, report_type, period_start, period_end,
+                total_emissions, total_reductions, net_emissions,
+                credits_generated, credits_retired, credits_sold,
+                revenue_from_credits, summary
+            ) VALUES (
+                $1, $2, $3, $4,
+                $5, $6, $7,
+                $8, $9, $10,
+                $11, $12
+            )
+            RETURNING *
+            "#,
+            owner_id,
+            report_type,
+            req.period_start,
+            req.period_end,
+            total_emissions,
+            total_reductions,
+            net_emissions,
+            credits_row.generated.unwrap_or_default(),
+            credits_row.retired.unwrap_or_default(),
+            credits_row.sold.unwrap_or_default(),
+            revenue_row.revenue.unwrap_or_default(),
+            summary,
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(report)
+    }
+
+    pub async fn list_reports(&self, owner_id: Uuid) -> Result<Vec<CarbonReport>, AppError> {
+        let reports = sqlx::query_as!(
+            CarbonReport,
+            "SELECT * FROM carbon_reports WHERE owner_id = $1 ORDER BY generated_at DESC",
+            owner_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(reports)
+    }
+
+    /// Calculate the sustainability score for a supplier based on their products' emissions reductions.
+    pub async fn get_supplier_score(&self, supplier_address: &str) -> Result<f64, AppError> {
+        let row = sqlx::query!(
+            r#"
+            SELECT AVG(cf.reduction_percentage) as avg_reduction
+            FROM carbon_footprints cf
+            JOIN products p ON p.id = cf.product_id
+            WHERE p.owner_address = $1
+            "#,
+            supplier_address
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Score is base 50 + average reduction percentage, capped at 100
+        let score = match row.avg_reduction {
+            Some(reduction) => {
+                let r: f64 = reduction.to_string().parse().unwrap_or(0.0);
+                (50.0 + r).min(100.0)
+            }
+            None => 50.0,
+        };
+        Ok((score * 10.0).round() / 10.0) // Round to 1 decimal place
+    }
+
+    /// Generates an overall sustainability metrics dashboard overview.
+    pub async fn get_sustainability_dashboard(&self) -> Result<serde_json::Value, AppError> {
+        let emissions = sqlx::query!(
+            r#"
+            SELECT 
+                COALESCE(SUM(total_emissions), 0) as total_emissions,
+                COALESCE(SUM(emissions_reduction), 0) as total_reductions,
+                AVG(reduction_percentage) as avg_reduction
+            FROM carbon_footprints
+            "#
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let credits = sqlx::query!(
+            r#"
+            SELECT
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'retired'), 0) AS retired_credits,
+                COALESCE(SUM(quantity) FILTER (WHERE status = 'listed'), 0) AS listed_credits
+            FROM carbon_credits
+            "#
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        let top_suppliers = sqlx::query!(
+            r#"
+            SELECT p.owner_address, AVG(cf.reduction_percentage) as avg_reduction
+            FROM carbon_footprints cf
+            JOIN products p ON p.id = cf.product_id
+            GROUP BY p.owner_address
+            ORDER BY avg_reduction DESC NULLS LAST
+            LIMIT 5
+            "#
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        let mut suppliers_ranking = Vec::new();
+        for s in top_suppliers {
+            let avg: f64 = match s.avg_reduction {
+                Some(v) => v.to_string().parse().unwrap_or(0.0),
+                None => 0.0,
+            };
+            suppliers_ranking.push(serde_json::json!({
+                "supplier": s.owner_address,
+                "sustainability_score": (50.0 + avg).min(100.0)
+            }));
+        }
+
+        let total_emissions: f64 = emissions.total_emissions.unwrap_or_default().to_string().parse().unwrap_or(0.0);
+        let total_reductions: f64 = emissions.total_reductions.unwrap_or_default().to_string().parse().unwrap_or(0.0);
+        let avg_reduction: f64 = match emissions.avg_reduction {
+            Some(v) => v.to_string().parse().unwrap_or(0.0),
+            None => 0.0,
+        };
+
+        Ok(serde_json::json!({
+            "metrics": {
+                "total_emissions_kg": total_emissions,
+                "total_reductions_kg": total_reductions,
+                "average_reduction_percentage": avg_reduction,
+                "credits_retired_tonnes": credits.retired_credits.unwrap_or_default().to_string().parse::<f64>().unwrap_or(0.0),
+                "credits_listed_tonnes": credits.listed_credits.unwrap_or_default().to_string().parse::<f64>().unwrap_or(0.0),
+            },
+            "top_sustainable_suppliers": suppliers_ranking
+        }))
+    }
+}
+
+
+// ── Helpers ───────────────────────────────────────────────────────────────────
+
+fn generate_serial_number(vintage_year: i32) -> String {
+    format!(
+        "CL-{}-{}-{}",
+        vintage_year,
+        Utc::now().format("%Y%m%d"),
+        &Uuid::new_v4().to_string()[..8].to_uppercase()
+    )
+}
diff --git a/backend/src/services/carbon_calculator.rs b/backend/src/services/carbon_calculator.rs
new file mode 100644
index 00000000..1d6776d6
--- /dev/null
+++ b/backend/src/services/carbon_calculator.rs
@@ -0,0 +1,226 @@
+/// Carbon footprint calculation engine based on GHG Protocol methodology.
+///
+/// Emission factors are in kg CO2e per unit:
+///   - Transport: kg CO2e per tonne-km
+///   - Energy:    kg CO2e per kWh
+///   - Packaging: kg CO2e per kg of material
+///   - Storage:   kg CO2e per hour (per tonne stored)
+use crate::models::carbon::{CalculateFootprintRequest, FootprintBreakdown};
+
+// ── Emission factors (kg CO2e) ────────────────────────────────────────────────
+
+/// Transport emission factors: kg CO2e per tonne-km
+mod transport_factors {
+    pub const ROAD_DIESEL: f64 = 0.096;
+    pub const ROAD_ELECTRIC: f64 = 0.025;
+    pub const RAIL: f64 = 0.028;
+    pub const SEA: f64 = 0.016;
+    pub const AIR: f64 = 0.602;
+    pub const DEFAULT: f64 = 0.096; // assume road diesel
+}
+
+/// Energy emission factors: kg CO2e per kWh
+mod energy_factors {
+    pub const GRID_AVERAGE: f64 = 0.233;
+    pub const RENEWABLE: f64 = 0.010;
+    pub const DIESEL_GENERATOR: f64 = 0.708;
+    pub const NATURAL_GAS: f64 = 0.202;
+}
+
+/// Packaging emission factors: kg CO2e per kg of material
+mod packaging_factors {
+    pub const CARDBOARD: f64 = 0.94;
+    pub const PLASTIC: f64 = 2.53;
+    pub const GLASS: f64 = 0.87;
+    pub const METAL: f64 = 1.45;
+    pub const MINIMAL: f64 = 0.20;
+    pub const DEFAULT: f64 = 0.94;
+}
+
+/// Storage emission factor: kg CO2e per tonne per hour (refrigerated warehouse)
+const STORAGE_FACTOR_PER_TONNE_HOUR: f64 = 0.0012;
+
+/// Minimum reduction threshold to qualify for credit generation (5%)
+const MIN_REDUCTION_PCT_FOR_CREDITS: f64 = 5.0;
+
+// ── Public API ────────────────────────────────────────────────────────────────
+
+pub fn calculate(req: &CalculateFootprintRequest) -> FootprintBreakdown {
+    let weight_kg = req.weight_kg.unwrap_or(1000.0); // default 1 tonne
+    let weight_tonnes = weight_kg / 1000.0;
+
+    let transport = calculate_transport(
+        req.transport_mode.as_deref(),
+        req.distance_km.unwrap_or(0.0),
+        weight_tonnes,
+    );
+
+    // Manufacturing: estimated from weight using a generic factor (0.5 kg CO2e/kg)
+    let manufacturing = weight_kg * 0.5;
+
+    let packaging = calculate_packaging(
+        req.packaging_type.as_deref(),
+        weight_kg,
+    );
+
+    let storage = calculate_storage(
+        req.storage_hours.unwrap_or(0.0),
+        weight_tonnes,
+        req.energy_source.as_deref(),
+    );
+
+    let total = transport + manufacturing + packaging + storage;
+
+    let (emissions_reduction, reduction_percentage) = match req.baseline_emissions {
+        Some(baseline) if baseline > 0.0 => {
+            let reduction = (baseline - total).max(0.0);
+            let pct = (reduction / baseline) * 100.0;
+            (Some(reduction), Some(pct))
+        }
+        _ => (None, None),
+    };
+
+    // Credits are generated only when reduction exceeds the minimum threshold
+    let eligible_credits = match (emissions_reduction, reduction_percentage) {
+        (Some(reduction), Some(pct)) if pct >= MIN_REDUCTION_PCT_FOR_CREDITS => {
+            // Convert kg CO2e → tonnes CO2e
+            reduction / 1000.0
+        }
+        _ => 0.0,
+    };
+
+    FootprintBreakdown {
+        transport_emissions: round2(transport),
+        manufacturing_emissions: round2(manufacturing),
+        packaging_emissions: round2(packaging),
+        storage_emissions: round2(storage),
+        total_emissions: round2(total),
+        emissions_reduction: emissions_reduction.map(round2),
+        reduction_percentage: reduction_percentage.map(|p| round2(p)),
+        eligible_credits: round4(eligible_credits),
+    }
+}
+
+// ── Internal helpers ──────────────────────────────────────────────────────────
+
+fn calculate_transport(mode: Option<&str>, distance_km: f64, weight_tonnes: f64) -> f64 {
+    let factor = match mode {
+        Some("road") | Some("truck") => transport_factors::ROAD_DIESEL,
+        Some("road_electric") => transport_factors::ROAD_ELECTRIC,
+        Some("rail") | Some("train") => transport_factors::RAIL,
+        Some("sea") | Some("ship") | Some("ocean") => transport_factors::SEA,
+        Some("air") | Some("plane") => transport_factors::AIR,
+        _ => transport_factors::DEFAULT,
+    };
+    // kg CO2e = factor (kg/tonne-km) × distance_km × weight_tonnes
+    factor * distance_km * weight_tonnes
+}
+
+fn calculate_packaging(packaging_type: Option<&str>, weight_kg: f64) -> f64 {
+    let factor = match packaging_type {
+        Some("cardboard") | Some("paper") => packaging_factors::CARDBOARD,
+        Some("plastic") => packaging_factors::PLASTIC,
+        Some("glass") => packaging_factors::GLASS,
+        Some("metal") | Some("aluminium") | Some("steel") => packaging_factors::METAL,
+        Some("minimal") | Some("none") => packaging_factors::MINIMAL,
+        _ => packaging_factors::DEFAULT,
+    };
+    // Packaging weight assumed to be ~5% of product weight
+    let packaging_weight_kg = weight_kg * 0.05;
+    factor * packaging_weight_kg
+}
+
+fn calculate_storage(hours: f64, weight_tonnes: f64, energy_source: Option<&str>) -> f64 {
+    let energy_multiplier = match energy_source {
+        Some("renewable") | Some("solar") | Some("wind") => 0.1,
+        Some("grid") | Some("grid_average") => 1.0,
+        Some("diesel") => 3.0,
+        Some("natural_gas") => 0.87,
+        _ => 1.0,
+    };
+    STORAGE_FACTOR_PER_TONNE_HOUR * hours * weight_tonnes * energy_multiplier
+}
+
+fn round2(v: f64) -> f64 {
+    (v * 100.0).round() / 100.0
+}
+
+fn round4(v: f64) -> f64 {
+    (v * 10_000.0).round() / 10_000.0
+}
+
+// ── Tests ─────────────────────────────────────────────────────────────────────
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn base_req() -> CalculateFootprintRequest {
+        CalculateFootprintRequest {
+            product_id: "prod-1".into(),
+            tracking_event_id: None,
+            transport_mode: Some("road".into()),
+            distance_km: Some(500.0),
+            energy_source: Some("grid".into()),
+            weight_kg: Some(1000.0),
+            packaging_type: Some("cardboard".into()),
+            storage_hours: Some(24.0),
+            baseline_emissions: None,
+        }
+    }
+
+    #[test]
+    fn test_basic_calculation() {
+        let result = calculate(&base_req());
+        assert!(result.total_emissions > 0.0);
+        assert_eq!(
+            result.total_emissions,
+            round2(
+                result.transport_emissions
+                    + result.manufacturing_emissions
+                    + result.packaging_emissions
+                    + result.storage_emissions
+            )
+        );
+    }
+
+    #[test]
+    fn test_air_transport_higher_than_sea() {
+        let mut req = base_req();
+        req.transport_mode = Some("air".into());
+        let air = calculate(&req);
+
+        req.transport_mode = Some("sea".into());
+        let sea = calculate(&req);
+
+        assert!(air.transport_emissions > sea.transport_emissions);
+    }
+
+    #[test]
+    fn test_credit_generation_with_sufficient_reduction() {
+        let mut req = base_req();
+        req.baseline_emissions = Some(10_000.0); // high baseline
+        let result = calculate(&req);
+        assert!(result.eligible_credits > 0.0);
+        assert!(result.reduction_percentage.unwrap() >= 5.0);
+    }
+
+    #[test]
+    fn test_no_credits_without_baseline() {
+        let result = calculate(&base_req());
+        assert_eq!(result.eligible_credits, 0.0);
+        assert!(result.emissions_reduction.is_none());
+    }
+
+    #[test]
+    fn test_renewable_storage_lower_emissions() {
+        let mut req = base_req();
+        req.energy_source = Some("renewable".into());
+        let renewable = calculate(&req);
+
+        req.energy_source = Some("diesel".into());
+        let diesel = calculate(&req);
+
+        assert!(renewable.storage_emissions < diesel.storage_emissions);
+    }
+}
diff --git a/backend/src/services/collaboration.rs b/backend/src/services/collaboration.rs
new file mode 100644
index 00000000..7dd51536
--- /dev/null
+++ b/backend/src/services/collaboration.rs
@@ -0,0 +1,155 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+use crate::error::AppError;
+use crate::models::collaboration::*;
+
+pub struct CollaborationService {
+    pool: PgPool,
+}
+
+impl CollaborationService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    pub async fn share_product(
+        &self,
+        actor_id: Uuid,
+        req: ShareProductRequest,
+    ) -> Result<ProductShare, AppError> {
+        let share = sqlx::query_as!(
+            ProductShare,
+            r#"
+            INSERT INTO product_shares (product_id, shared_with_user_id, permission_level)
+            VALUES ($1, $2, $3)
+            RETURNING *
+            "#,
+            req.product_id,
+            req.shared_with_user_id,
+            req.permission_level
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        self.log_audit(
+            Some(actor_id),
+            "share_product",
+            "product",
+            &req.product_id,
+            serde_json::json!({ "shared_with": req.shared_with_user_id, "permission": req.permission_level })
+        ).await?;
+
+        Ok(share)
+    }
+
+    pub async fn list_shares(&self, product_id: &str) -> Result<Vec<ProductShare>, AppError> {
+        let shares = sqlx::query_as!(
+            ProductShare,
+            "SELECT * FROM product_shares WHERE product_id = $1",
+            product_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(shares)
+    }
+
+    pub async fn create_collaboration_request(
+        &self,
+        requester_id: Uuid,
+        req: CreateCollaborationRequest,
+    ) -> Result<CollaborationRequest, AppError> {
+        let request = sqlx::query_as!(
+            CollaborationRequest,
+            r#"
+            INSERT INTO collaboration_requests (product_id, requester_id, status)
+            VALUES ($1, $2, 'pending')
+            RETURNING *
+            "#,
+            req.product_id,
+            requester_id
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        self.log_audit(
+            Some(requester_id),
+            "create_collaboration_request",
+            "product",
+            &req.product_id,
+            serde_json::json!({})
+        ).await?;
+
+        Ok(request)
+    }
+
+    pub async fn update_collaboration_request(
+        &self,
+        actor_id: Uuid,
+        request_id: Uuid,
+        status: &str,
+    ) -> Result<CollaborationRequest, AppError> {
+        let updated = sqlx::query_as!(
+            CollaborationRequest,
+            r#"
+            UPDATE collaboration_requests
+            SET status = $2, updated_at = NOW()
+            WHERE id = $1
+            RETURNING *
+            "#,
+            request_id,
+            status
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        self.log_audit(
+            Some(actor_id),
+            "update_collaboration_request",
+            "collaboration_request",
+            &request_id.to_string(),
+            serde_json::json!({ "new_status": status })
+        ).await?;
+
+        Ok(updated)
+    }
+
+    pub async fn list_audit_trail(
+        &self,
+        entity_type: &str,
+        entity_id: &str,
+    ) -> Result<Vec<CollaborationAuditTrail>, AppError> {
+        let trails = sqlx::query_as!(
+            CollaborationAuditTrail,
+            "SELECT * FROM collaboration_audit_trails WHERE entity_type = $1 AND entity_id = $2 ORDER BY created_at DESC",
+            entity_type,
+            entity_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+        Ok(trails)
+    }
+
+    async fn log_audit(
+        &self,
+        actor_id: Option<Uuid>,
+        action: &str,
+        entity_type: &str,
+        entity_id: &str,
+        details: serde_json::Value,
+    ) -> Result<(), AppError> {
+        sqlx::query!(
+            r#"
+            INSERT INTO collaboration_audit_trails (actor_id, action, entity_type, entity_id, details)
+            VALUES ($1, $2, $3, $4, $5)
+            "#,
+            actor_id,
+            action,
+            entity_type,
+            entity_id,
+            details
+        )
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+}
diff --git a/backend/src/services/digital_twin_service.rs b/backend/src/services/digital_twin_service.rs
new file mode 100644
index 00000000..b5831e53
--- /dev/null
+++ b/backend/src/services/digital_twin_service.rs
@@ -0,0 +1,694 @@
+use crate::models::digital_twin::*;
+use crate::error::AppError;
+use chrono::Utc;
+use sqlx::PgPool;
+use uuid::Uuid;
+
+pub struct DigitalTwinService {
+    pool: PgPool,
+}
+
+impl DigitalTwinService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    /// Create a new digital twin
+    pub async fn create_twin(
+        &self,
+        request: CreateDigitalTwinRequest,
+    ) -> Result<DigitalTwin, AppError> {
+        let twin = sqlx::query_as::<_, DigitalTwin>(
+            r#"
+            INSERT INTO digital_twins (
+                id, product_id, twin_type, name, description,
+                current_state, metadata, is_active, created_at, updated_at
+            )
+            VALUES ($1, $2, $3, $4, $5, $6, $7, true, $8, $8)
+            RETURNING *
+            "#,
+        )
+        .bind(Uuid::new_v4())
+        .bind(&request.product_id)
+        .bind(&request.twin_type)
+        .bind(&request.name)
+        .bind(&request.description)
+        .bind(&request.initial_state)
+        .bind(&request.metadata)
+        .bind(Utc::now())
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(twin)
+    }
+
+    /// Get digital twin by ID
+    pub async fn get_twin(&self, twin_id: Uuid) -> Result<DigitalTwin, AppError> {
+        let twin = sqlx::query_as::<_, DigitalTwin>(
+            "SELECT * FROM digital_twins WHERE id = $1"
+        )
+        .bind(twin_id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::NotFound(format!("Digital twin not found: {}", e)))?;
+
+        Ok(twin)
+    }
+
+    /// Get all digital twins for a product
+    pub async fn get_twins_by_product(
+        &self,
+        product_id: &str,
+    ) -> Result<Vec<DigitalTwin>, AppError> {
+        let twins = sqlx::query_as::<_, DigitalTwin>(
+            "SELECT * FROM digital_twins WHERE product_id = $1 AND is_active = true ORDER BY created_at DESC"
+        )
+        .bind(product_id)
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(twins)
+    }
+
+    /// Update digital twin state
+    pub async fn update_twin_state(
+        &self,
+        twin_id: Uuid,
+        request: UpdateTwinStateRequest,
+    ) -> Result<TwinState, AppError> {
+        // Update the twin's current state
+        sqlx::query(
+            r#"
+            UPDATE digital_twins 
+            SET current_state = $1, updated_at = $2, last_sync_at = $2
+            WHERE id = $3
+            "#,
+        )
+        .bind(&request.state_data)
+        .bind(Utc::now())
+        .bind(twin_id)
+        .execute(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        // Record state history
+        let state = sqlx::query_as::<_, TwinState>(
+            r#"
+            INSERT INTO twin_states (id, twin_id, state_data, metrics, timestamp, source)
+            VALUES ($1, $2, $3, $4, $5, $6)
+            RETURNING *
+            "#,
+        )
+        .bind(Uuid::new_v4())
+        .bind(twin_id)
+        .bind(&request.state_data)
+        .bind(&request.metrics)
+        .bind(Utc::now())
+        .bind(&request.source)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(state)
+    }
+
+    /// Get state history for a twin
+    pub async fn get_state_history(
+        &self,
+        twin_id: Uuid,
+        limit: i64,
+    ) -> Result<Vec<TwinState>, AppError> {
+        let states = sqlx::query_as::<_, TwinState>(
+            "SELECT * FROM twin_states WHERE twin_id = $1 ORDER BY timestamp DESC LIMIT $2"
+        )
+        .bind(twin_id)
+        .bind(limit)
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(states)
+    }
+
+    /// Create a simulation
+    pub async fn create_simulation(
+        &self,
+        request: CreateSimulationRequest,
+    ) -> Result<Simulation, AppError> {
+        let simulation = sqlx::query_as::<_, Simulation>(
+            r#"
+            INSERT INTO simulations (
+                id, twin_id, name, description, simulation_type,
+                parameters, status, created_at, created_by
+            )
+            VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+            RETURNING *
+            "#,
+        )
+        .bind(Uuid::new_v4())
+        .bind(&request.twin_id)
+        .bind(&request.name)
+        .bind(&request.description)
+        .bind(&request.simulation_type)
+        .bind(&request.parameters)
+        .bind(SimulationStatus::Pending)
+        .bind(Utc::now())
+        .bind(&request.created_by)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(simulation)
+    }
+
+    /// Run a simulation (simplified implementation)
+    pub async fn run_simulation(
+        &self,
+        simulation_id: Uuid,
+    ) -> Result<SimulationResult, AppError> {
+        let start_time = Utc::now();
+
+        // Update status to running
+        sqlx::query(
+            "UPDATE simulations SET status = $1, started_at = $2 WHERE id = $3"
+        )
+        .bind(SimulationStatus::Running)
+        .bind(start_time)
+        .bind(simulation_id)
+        .execute(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        // Get simulation details
+        let simulation = sqlx::query_as::<_, Simulation>(
+            "SELECT * FROM simulations WHERE id = $1"
+        )
+        .bind(simulation_id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        // Perform simulation based on type
+        let results = self.execute_simulation(&simulation).await?;
+
+        let end_time = Utc::now();
+        let execution_time = (end_time - start_time).num_milliseconds();
+
+        // Update simulation with results
+        sqlx::query(
+            r#"
+            UPDATE simulations 
+            SET status = $1, results = $2, completed_at = $3
+            WHERE id = $4
+            "#,
+        )
+        .bind(SimulationStatus::Completed)
+        .bind(&results)
+        .bind(end_time)
+        .bind(simulation_id)
+        .execute(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(SimulationResult {
+            simulation_id,
+            status: SimulationStatus::Completed,
+            results: Some(results.clone()),
+            execution_time_ms: Some(execution_time),
+            insights: self.generate_insights(&simulation.simulation_type, &results),
+            recommendations: self.generate_recommendations(&simulation.simulation_type, &results),
+        })
+    }
+
+    /// Execute simulation logic based on type
+    async fn execute_simulation(
+        &self,
+        simulation: &Simulation,
+    ) -> Result<serde_json::Value, AppError> {
+        match simulation.simulation_type {
+            SimulationType::RouteOptimization => {
+                self.simulate_route_optimization(&simulation.parameters).await
+            }
+            SimulationType::DemandForecasting => {
+                self.simulate_demand_forecasting(&simulation.parameters).await
+            }
+            SimulationType::InventoryOptimization => {
+                self.simulate_inventory_optimization(&simulation.parameters).await
+            }
+            SimulationType::RiskAssessment => {
+                self.simulate_risk_assessment(&simulation.parameters).await
+            }
+            SimulationType::CostAnalysis => {
+                self.simulate_cost_analysis(&simulation.parameters).await
+            }
+            SimulationType::TimelineProjection => {
+                self.simulate_timeline_projection(&simulation.parameters).await
+            }
+        }
+    }
+
+    /// Simulate route optimization
+    async fn simulate_route_optimization(
+        &self,
+        parameters: &serde_json::Value,
+    ) -> Result<serde_json::Value, AppError> {
+        // Simplified route optimization simulation
+        Ok(serde_json::json!({
+            "original_route": {
+                "distance_km": 1500,
+                "estimated_time_hours": 24,
+                "cost_usd": 2500,
+                "carbon_kg": 450
+            },
+            "optimized_route": {
+                "distance_km": 1350,
+                "estimated_time_hours": 21,
+                "cost_usd": 2200,
+                "carbon_kg": 405
+            },
+            "improvements": {
+                "distance_reduction_percent": 10.0,
+                "time_savings_hours": 3,
+                "cost_savings_usd": 300,
+                "carbon_reduction_kg": 45
+            },
+            "waypoints": [
+                {"location": "Origin", "arrival": "2024-03-15T08:00:00Z"},
+                {"location": "Hub A", "arrival": "2024-03-15T14:00:00Z"},
+                {"location": "Hub B", "arrival": "2024-03-15T20:00:00Z"},
+                {"location": "Destination", "arrival": "2024-03-16T05:00:00Z"}
+            ]
+        }))
+    }
+
+    /// Simulate demand forecasting
+    async fn simulate_demand_forecasting(
+        &self,
+        parameters: &serde_json::Value,
+    ) -> Result<serde_json::Value, AppError> {
+        Ok(serde_json::json!({
+            "forecast_period_days": 30,
+            "predictions": [
+                {"date": "2024-03-15", "demand": 120, "confidence": 0.85},
+                {"date": "2024-03-16", "demand": 135, "confidence": 0.82},
+                {"date": "2024-03-17", "demand": 145, "confidence": 0.80}
+            ],
+            "trends": {
+                "overall_trend": "increasing",
+                "seasonality_detected": true,
+                "growth_rate_percent": 5.2
+            },
+            "risk_factors": [
+                "Potential supply disruption in week 3",
+                "Holiday season approaching"
+            ]
+        }))
+    }
+
+    /// Simulate inventory optimization
+    async fn simulate_inventory_optimization(
+        &self,
+        parameters: &serde_json::Value,
+    ) -> Result<serde_json::Value, AppError> {
+        Ok(serde_json::json!({
+            "current_inventory": {
+                "stock_level": 500,
+                "reorder_point": 200,
+                "holding_cost_per_unit": 2.5,
+                "stockout_risk": 0.15
+            },
+            "optimized_inventory": {
+                "recommended_stock_level": 450,
+                "recommended_reorder_point": 180,
+                "holding_cost_per_unit": 2.5,
+                "stockout_risk": 0.05
+            },
+            "savings": {
+                "reduced_holding_cost_usd": 125,
+                "reduced_stockout_risk_percent": 66.7,
+                "improved_turnover_rate": 1.2
+            }
+        }))
+    }
+
+    /// Simulate risk assessment
+    async fn simulate_risk_assessment(
+        &self,
+        parameters: &serde_json::Value,
+    ) -> Result<serde_json::Value, AppError> {
+        Ok(serde_json::json!({
+            "overall_risk_score": 0.35,
+            "risk_categories": [
+                {
+                    "category": "Supply Disruption",
+                    "score": 0.45,
+                    "severity": "Medium",
+                    "mitigation": "Diversify suppliers"
+                },
+                {
+                    "category": "Quality Issues",
+                    "score": 0.25,
+                    "severity": "Low",
+                    "mitigation": "Enhanced quality checks"
+                },
+                {
+                    "category": "Delivery Delays",
+                    "score": 0.40,
+                    "severity": "Medium",
+                    "mitigation": "Buffer inventory"
+                }
+            ],
+            "recommendations": [
+                "Establish backup suppliers",
+                "Increase safety stock by 15%",
+                "Implement real-time tracking"
+            ]
+        }))
+    }
+
+    /// Simulate cost analysis
+    async fn simulate_cost_analysis(
+        &self,
+        parameters: &serde_json::Value,
+    ) -> Result<serde_json::Value, AppError> {
+        Ok(serde_json::json!({
+            "total_cost_usd": 15000,
+            "cost_breakdown": {
+                "transportation": 6000,
+                "warehousing": 3500,
+                "handling": 2000,
+                "insurance": 1500,
+                "customs": 2000
+            },
+            "cost_per_unit": 15.0,
+            "optimization_opportunities": [
+                {
+                    "area": "Transportation",
+                    "potential_savings_usd": 900,
+                    "method": "Route optimization"
+                },
+                {
+                    "area": "Warehousing",
+                    "potential_savings_usd": 500,
+                    "method": "Inventory reduction"
+                }
+            ],
+            "total_potential_savings_usd": 1400
+        }))
+    }
+
+    /// Simulate timeline projection
+    async fn simulate_timeline_projection(
+        &self,
+        parameters: &serde_json::Value,
+    ) -> Result<serde_json::Value, AppError> {
+        Ok(serde_json::json!({
+            "baseline_timeline": {
+                "start_date": "2024-03-15T00:00:00Z",
+                "end_date": "2024-03-25T00:00:00Z",
+                "duration_days": 10
+            },
+            "projected_timeline": {
+                "start_date": "2024-03-15T00:00:00Z",
+                "end_date": "2024-03-23T00:00:00Z",
+                "duration_days": 8
+            },
+            "milestones": [
+                {
+                    "name": "Departure",
+                    "baseline": "2024-03-15T08:00:00Z",
+                    "projected": "2024-03-15T08:00:00Z",
+                    "status": "on_track"
+                },
+                {
+                    "name": "First Transit",
+                    "baseline": "2024-03-18T12:00:00Z",
+                    "projected": "2024-03-17T18:00:00Z",
+                    "status": "ahead"
+                },
+                {
+                    "name": "Arrival",
+                    "baseline": "2024-03-25T00:00:00Z",
+                    "projected": "2024-03-23T00:00:00Z",
+                    "status": "ahead"
+                }
+            ],
+            "confidence_score": 0.78
+        }))
+    }
+
+    /// Generate insights from simulation results
+    fn generate_insights(
+        &self,
+        simulation_type: &SimulationType,
+        results: &serde_json::Value,
+    ) -> Vec<String> {
+        match simulation_type {
+            SimulationType::RouteOptimization => vec![
+                "Route optimization can reduce distance by 10%".to_string(),
+                "Estimated time savings of 3 hours".to_string(),
+                "Carbon emissions reduced by 45kg".to_string(),
+            ],
+            SimulationType::DemandForecasting => vec![
+                "Demand trending upward with 5.2% growth".to_string(),
+                "Seasonality pattern detected".to_string(),
+                "High confidence in short-term predictions".to_string(),
+            ],
+            SimulationType::InventoryOptimization => vec![
+                "Current inventory levels are 10% higher than optimal".to_string(),
+                "Stockout risk can be reduced by 67%".to_string(),
+                "Potential savings of $125 in holding costs".to_string(),
+            ],
+            SimulationType::RiskAssessment => vec![
+                "Overall risk level is moderate (0.35)".to_string(),
+                "Supply disruption is the highest risk factor".to_string(),
+                "Mitigation strategies can reduce risk by 40%".to_string(),
+            ],
+            SimulationType::CostAnalysis => vec![
+                "Transportation represents 40% of total costs".to_string(),
+                "Optimization can save $1,400 (9.3%)".to_string(),
+                "Route optimization offers the largest savings opportunity".to_string(),
+            ],
+            SimulationType::TimelineProjection => vec![
+                "Project can be completed 2 days ahead of schedule".to_string(),
+                "All milestones are on track or ahead".to_string(),
+                "High confidence (78%) in timeline accuracy".to_string(),
+            ],
+        }
+    }
+
+    /// Generate recommendations from simulation results
+    fn generate_recommendations(
+        &self,
+        simulation_type: &SimulationType,
+        results: &serde_json::Value,
+    ) -> Vec<String> {
+        match simulation_type {
+            SimulationType::RouteOptimization => vec![
+                "Implement the optimized route to save time and costs".to_string(),
+                "Consider real-time traffic data for dynamic routing".to_string(),
+                "Evaluate multi-modal transportation options".to_string(),
+            ],
+            SimulationType::DemandForecasting => vec![
+                "Increase inventory levels by 15% to meet projected demand".to_string(),
+                "Prepare for seasonal demand spike".to_string(),
+                "Monitor supply chain for potential disruptions".to_string(),
+            ],
+            SimulationType::InventoryOptimization => vec![
+                "Reduce stock levels to 450 units".to_string(),
+                "Lower reorder point to 180 units".to_string(),
+                "Implement just-in-time inventory practices".to_string(),
+            ],
+            SimulationType::RiskAssessment => vec![
+                "Establish relationships with backup suppliers".to_string(),
+                "Increase safety stock by 15%".to_string(),
+                "Implement real-time supply chain monitoring".to_string(),
+            ],
+            SimulationType::CostAnalysis => vec![
+                "Focus on transportation optimization first".to_string(),
+                "Negotiate better warehousing rates".to_string(),
+                "Consider consolidating shipments".to_string(),
+            ],
+            SimulationType::TimelineProjection => vec![
+                "Maintain current pace to stay ahead of schedule".to_string(),
+                "Allocate saved time to quality assurance".to_string(),
+                "Communicate updated timeline to stakeholders".to_string(),
+            ],
+        }
+    }
+
+    /// Get simulation by ID
+    pub async fn get_simulation(&self, simulation_id: Uuid) -> Result<Simulation, AppError> {
+        let simulation = sqlx::query_as::<_, Simulation>(
+            "SELECT * FROM simulations WHERE id = $1"
+        )
+        .bind(simulation_id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::NotFound(format!("Simulation not found: {}", e)))?;
+
+        Ok(simulation)
+    }
+
+    /// List simulations for a twin
+    pub async fn list_simulations(
+        &self,
+        twin_id: Uuid,
+    ) -> Result<Vec<Simulation>, AppError> {
+        let simulations = sqlx::query_as::<_, Simulation>(
+            "SELECT * FROM simulations WHERE twin_id = $1 ORDER BY created_at DESC"
+        )
+        .bind(twin_id)
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(simulations)
+    }
+
+    /// Create a prediction
+    pub async fn create_prediction(
+        &self,
+        request: PredictionRequest,
+    ) -> Result<Prediction, AppError> {
+        // Simplified prediction logic
+        let predicted_value = self.generate_prediction(&request).await?;
+        let confidence_score = 0.85; // Simplified confidence calculation
+
+        let prediction = sqlx::query_as::<_, Prediction>(
+            r#"
+            INSERT INTO predictions (
+                id, twin_id, prediction_type, predicted_value,
+                confidence_score, prediction_horizon, created_at, valid_until
+            )
+            VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+            RETURNING *
+            "#,
+        )
+        .bind(Uuid::new_v4())
+        .bind(&request.twin_id)
+        .bind(&request.prediction_type)
+        .bind(&predicted_value)
+        .bind(confidence_score)
+        .bind(&request.prediction_horizon)
+        .bind(Utc::now())
+        .bind(Utc::now() + chrono::Duration::hours(request.prediction_horizon as i64))
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(prediction)
+    }
+
+    /// Generate prediction value
+    async fn generate_prediction(
+        &self,
+        request: &PredictionRequest,
+    ) -> Result<serde_json::Value, AppError> {
+        match request.prediction_type {
+            PredictionType::ArrivalTime => {
+                Ok(serde_json::json!({
+                    "estimated_arrival": "2024-03-20T14:30:00Z",
+                    "variance_hours": 2
+                }))
+            }
+            PredictionType::Delay => {
+                Ok(serde_json::json!({
+                    "delay_probability": 0.25,
+                    "expected_delay_hours": 3
+                }))
+            }
+            PredictionType::QualityIssue => {
+                Ok(serde_json::json!({
+                    "issue_probability": 0.15,
+                    "risk_factors": ["temperature", "humidity"]
+                }))
+            }
+            PredictionType::DemandSpike => {
+                Ok(serde_json::json!({
+                    "spike_probability": 0.60,
+                    "expected_increase_percent": 25
+                }))
+            }
+            PredictionType::SupplyDisruption => {
+                Ok(serde_json::json!({
+                    "disruption_probability": 0.20,
+                    "severity": "medium"
+                }))
+            }
+            PredictionType::CostOverrun => {
+                Ok(serde_json::json!({
+                    "overrun_probability": 0.30,
+                    "expected_overrun_percent": 10
+                }))
+            }
+        }
+    }
+
+    /// Get twin analytics
+    pub async fn get_twin_analytics(
+        &self,
+        twin_id: Uuid,
+    ) -> Result<TwinAnalytics, AppError> {
+        let metrics = self.calculate_twin_metrics(twin_id).await?;
+        
+        let recent_predictions = sqlx::query_as::<_, Prediction>(
+            "SELECT * FROM predictions WHERE twin_id = $1 ORDER BY created_at DESC LIMIT 5"
+        )
+        .bind(twin_id)
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        let active_optimizations = sqlx::query_as::<_, Optimization>(
+            "SELECT * FROM optimizations WHERE twin_id = $1 AND applied_at IS NULL ORDER BY created_at DESC LIMIT 5"
+        )
+        .bind(twin_id)
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        let simulation_count: (i64,) = sqlx::query_as(
+            "SELECT COUNT(*) FROM simulations WHERE twin_id = $1"
+        )
+        .bind(twin_id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        let state_history_count: (i64,) = sqlx::query_as(
+            "SELECT COUNT(*) FROM twin_states WHERE twin_id = $1"
+        )
+        .bind(twin_id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| AppError::DatabaseError(e.to_string()))?;
+
+        Ok(TwinAnalytics {
+            twin_id,
+            metrics,
+            recent_predictions,
+            active_optimizations,
+            simulation_count: simulation_count.0,
+            state_history_count: state_history_count.0,
+        })
+    }
+
+    /// Calculate metrics for a digital twin
+    async fn calculate_twin_metrics(&self, twin_id: Uuid) -> Result<TwinMetrics, AppError> {
+        // Simplified metrics calculation
+        Ok(TwinMetrics {
+            twin_id,
+            total_events: 150,
+            avg_transit_time: Some(72.5),
+            on_time_delivery_rate: Some(0.92),
+            quality_score: Some(0.95),
+            cost_efficiency: Some(0.88),
+            carbon_footprint: Some(450.0),
+            risk_score: Some(0.35),
+            last_updated: Utc::now(),
+        })
+    }
+}
diff --git a/backend/src/services/financial.rs b/backend/src/services/financial.rs
new file mode 100644
index 00000000..78e48ee0
--- /dev/null
+++ b/backend/src/services/financial.rs
@@ -0,0 +1,165 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+use serde::{Deserialize, Serialize};
+use decimal::Decimal;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Transaction {
+    pub id: String,
+    pub user_id: String,
+    pub transaction_type: String,
+    pub amount: String,
+    pub currency: String,
+    pub status: String,
+    pub blockchain_network: Option<String>,
+    pub blockchain_tx_hash: Option<String>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Invoice {
+    pub id: String,
+    pub user_id: String,
+    pub invoice_number: String,
+    pub amount: String,
+    pub currency: String,
+    pub status: String,
+    pub due_date: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FinancingRequest {
+    pub id: String,
+    pub user_id: String,
+    pub financing_type: String,
+    pub amount_requested: String,
+    pub amount_approved: Option<String>,
+    pub status: String,
+    pub interest_rate: Option<String>,
+}
+
+pub struct FinancialService {
+    pool: PgPool,
+}
+
+impl FinancialService {
+    pub fn new(pool: PgPool) -> Self {
+        FinancialService { pool }
+    }
+
+    pub async fn create_transaction(
+        &self,
+        user_id: &str,
+        transaction_type: &str,
+        amount: &str,
+        currency: &str,
+    ) -> Result<Transaction, String> {
+        let id = Uuid::new_v4().to_string();
+
+        let result = sqlx::query_as::<_, Transaction>(
+            "INSERT INTO transactions (id, user_id, transaction_type, amount, currency, status) 
+             VALUES ($1, $2, $3, $4, $5, 'pending') 
+             RETURNING id, user_id, transaction_type, amount, currency, status, blockchain_network, blockchain_tx_hash"
+        )
+        .bind(&id)
+        .bind(user_id)
+        .bind(transaction_type)
+        .bind(amount)
+        .bind(currency)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| e.to_string())?;
+
+        Ok(result)
+    }
+
+    pub async fn create_invoice(
+        &self,
+        user_id: &str,
+        amount: &str,
+        due_date: &str,
+    ) -> Result<Invoice, String> {
+        let id = Uuid::new_v4().to_string();
+        let invoice_number = format!("INV-{}", chrono::Utc::now().timestamp());
+
+        let result = sqlx::query_as::<_, Invoice>(
+            "INSERT INTO invoices (id, user_id, invoice_number, amount, currency, status, due_date) 
+             VALUES ($1, $2, $3, $4, 'USD', 'draft', $5) 
+             RETURNING id, user_id, invoice_number, amount, currency, status, due_date"
+        )
+        .bind(&id)
+        .bind(user_id)
+        .bind(&invoice_number)
+        .bind(amount)
+        .bind(due_date)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| e.to_string())?;
+
+        Ok(result)
+    }
+
+    pub async fn request_financing(
+        &self,
+        user_id: &str,
+        financing_type: &str,
+        amount: &str,
+    ) -> Result<FinancingRequest, String> {
+        let id = Uuid::new_v4().to_string();
+
+        let result = sqlx::query_as::<_, FinancingRequest>(
+            "INSERT INTO financing_requests (id, user_id, financing_type, amount_requested, status) 
+             VALUES ($1, $2, $3, $4, 'pending') 
+             RETURNING id, user_id, financing_type, amount_requested, amount_approved, status, interest_rate"
+        )
+        .bind(&id)
+        .bind(user_id)
+        .bind(financing_type)
+        .bind(amount)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| e.to_string())?;
+
+        Ok(result)
+    }
+
+    pub async fn get_transaction(&self, id: &str) -> Result<Transaction, String> {
+        sqlx::query_as::<_, Transaction>(
+            "SELECT id, user_id, transaction_type, amount, currency, status, blockchain_network, blockchain_tx_hash 
+             FROM transactions WHERE id = $1"
+        )
+        .bind(id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| e.to_string())
+    }
+
+    pub async fn list_user_transactions(&self, user_id: &str) -> Result<Vec<Transaction>, String> {
+        sqlx::query_as::<_, Transaction>(
+            "SELECT id, user_id, transaction_type, amount, currency, status, blockchain_network, blockchain_tx_hash 
+             FROM transactions WHERE user_id = $1 ORDER BY created_at DESC"
+        )
+        .bind(user_id)
+        .fetch_all(&self.pool)
+        .await
+        .map_err(|e| e.to_string())
+    }
+
+    pub async fn update_transaction_status(
+        &self,
+        id: &str,
+        status: &str,
+        blockchain_tx_hash: Option<&str>,
+    ) -> Result<Transaction, String> {
+        sqlx::query_as::<_, Transaction>(
+            "UPDATE transactions SET status = $1, blockchain_tx_hash = $2, updated_at = CURRENT_TIMESTAMP 
+             WHERE id = $3 
+             RETURNING id, user_id, transaction_type, amount, currency, status, blockchain_network, blockchain_tx_hash"
+        )
+        .bind(status)
+        .bind(blockchain_tx_hash)
+        .bind(id)
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| e.to_string())
+    }
+}
diff --git a/backend/src/services/iot_service.rs b/backend/src/services/iot_service.rs
new file mode 100644
index 00000000..cfa75e75
--- /dev/null
+++ b/backend/src/services/iot_service.rs
@@ -0,0 +1,670 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+use crate::models::iot::*;
+use rust_decimal::Decimal;
+
+pub struct IoTService {
+    pool: PgPool,
+}
+
+impl IoTService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    // IoT Device Management
+    pub async fn create_device(&self, device: NewIoTDevice) -> Result<IoTDevice, sqlx::Error> {
+        sqlx::query_as!(
+            IoTDevice,
+            r#"
+            INSERT INTO iot_devices (
+                device_id, device_type, product_id, name, description,
+                manufacturer, model, serial_number, firmware_version,
+                location, metadata
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+            RETURNING *
+            "#,
+            device.device_id,
+            device.device_type,
+            device.product_id,
+            device.name,
+            device.description,
+            device.manufacturer,
+            device.model,
+            device.serial_number,
+            device.firmware_version,
+            device.location,
+            device.metadata.unwrap_or(serde_json::json!({}))
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_device(&self, device_id: &str) -> Result<Option<IoTDevice>, sqlx::Error> {
+        sqlx::query_as!(
+            IoTDevice,
+            "SELECT * FROM iot_devices WHERE device_id = $1",
+            device_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_devices(
+        &self,
+        product_id: Option<String>,
+        device_type: Option<String>,
+        is_active: Option<bool>,
+    ) -> Result<Vec<IoTDevice>, sqlx::Error> {
+        match (product_id, device_type, is_active) {
+            (Some(pid), Some(dt), Some(active)) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE product_id = $1 AND device_type = $2 AND is_active = $3 ORDER BY created_at DESC",
+                    pid, dt, active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), Some(dt), None) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE product_id = $1 AND device_type = $2 ORDER BY created_at DESC",
+                    pid, dt
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None, Some(active)) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE product_id = $1 AND is_active = $2 ORDER BY created_at DESC",
+                    pid, active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(dt), Some(active)) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE device_type = $1 AND is_active = $2 ORDER BY created_at DESC",
+                    dt, active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None, None) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE product_id = $1 ORDER BY created_at DESC",
+                    pid
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(dt), None) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE device_type = $1 ORDER BY created_at DESC",
+                    dt
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(active)) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices WHERE is_active = $1 ORDER BY created_at DESC",
+                    active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None) => {
+                sqlx::query_as!(
+                    IoTDevice,
+                    "SELECT * FROM iot_devices ORDER BY created_at DESC"
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    pub async fn update_device_last_seen(&self, device_id: &str) -> Result<(), sqlx::Error> {
+        sqlx::query!(
+            "UPDATE iot_devices SET last_seen_at = NOW() WHERE device_id = $1",
+            device_id
+        )
+        .execute(&self.pool)
+        .await?;
+        Ok(())
+    }
+
+    // Temperature Readings
+    pub async fn create_reading(&self, reading: NewTemperatureReading) -> Result<TemperatureReading, sqlx::Error> {
+        // Update device last seen
+        let _ = self.update_device_last_seen(&reading.device_id).await;
+
+        // Check for anomalies and thresholds
+        let (is_anomaly, anomaly_reason) = self.check_anomaly(&reading).await;
+        
+        let reading_with_anomaly = sqlx::query_as!(
+            TemperatureReading,
+            r#"
+            INSERT INTO temperature_readings (
+                device_id, product_id, temperature_celsius, humidity_percent,
+                unit, reading_timestamp, location, quality_score,
+                is_anomaly, anomaly_reason, metadata
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11)
+            RETURNING *
+            "#,
+            reading.device_id,
+            reading.product_id,
+            reading.temperature_celsius,
+            reading.humidity_percent,
+            reading.unit,
+            reading.reading_timestamp,
+            reading.location,
+            reading.quality_score,
+            is_anomaly,
+            anomaly_reason,
+            reading.metadata.unwrap_or(serde_json::json!({}))
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Check thresholds and create alerts if needed
+        if let Some(ref pid) = reading.product_id {
+            let _ = self.check_thresholds(&reading.device_id, pid, reading.temperature_celsius).await;
+        }
+
+        Ok(reading_with_anomaly)
+    }
+
+    async fn check_anomaly(&self, reading: &NewTemperatureReading) -> (bool, Option<String>) {
+        // Simple anomaly detection: check if temperature is outside reasonable range
+        // In production, this would use statistical methods or ML models
+        let temp = reading.temperature_celsius;
+        
+        if temp < Decimal::from(-50) || temp > Decimal::from(100) {
+            return (true, Some("Temperature outside reasonable range".to_string()));
+        }
+
+        // Check quality score if provided
+        if let Some(score) = reading.quality_score {
+            if score < Decimal::from(50) {
+                return (true, Some("Low quality score".to_string()));
+            }
+        }
+
+        (false, None)
+    }
+
+    async fn check_thresholds(&self, device_id: &str, product_id: &str, temperature: Decimal) -> Result<(), sqlx::Error> {
+        let thresholds = sqlx::query_as!(
+            TemperatureThreshold,
+            r#"
+            SELECT * FROM temperature_thresholds
+            WHERE (product_id = $1 OR device_id = $2)
+            AND is_active = true
+            "#,
+            product_id,
+            device_id
+        )
+        .fetch_all(&self.pool)
+        .await?;
+
+        for threshold in thresholds {
+            let breached = match threshold.threshold_type.as_str() {
+                "min" => {
+                    if let Some(min_temp) = threshold.min_temperature_celsius {
+                        temperature < min_temp
+                    } else {
+                        false
+                    }
+                }
+                "max" => {
+                    if let Some(max_temp) = threshold.max_temperature_celsius {
+                        temperature > max_temp
+                    } else {
+                        false
+                    }
+                }
+                "critical_min" => {
+                    if let Some(min_temp) = threshold.min_temperature_celsius {
+                        temperature < min_temp
+                    } else {
+                        false
+                    }
+                }
+                "critical_max" => {
+                    if let Some(max_temp) = threshold.max_temperature_celsius {
+                        temperature > max_temp
+                    } else {
+                        false
+                    }
+                }
+                _ => false,
+            };
+
+            if breached {
+                let _ = self.create_alert(NewTemperatureAlert {
+                    device_id: device_id.to_string(),
+                    product_id: product_id.to_string(),
+                    threshold_id: Some(threshold.id),
+                    alert_type: "threshold_breach".to_string(),
+                    alert_level: threshold.alert_level.clone(),
+                    temperature_celsius: Some(temperature),
+                    threshold_value: if threshold.threshold_type.contains("min") {
+                        threshold.min_temperature_celsius
+                    } else {
+                        threshold.max_temperature_celsius
+                    },
+                    message: format!(
+                        "{} threshold breached: {}°C",
+                        threshold.threshold_type, temperature
+                    ),
+                }).await;
+            }
+        }
+
+        Ok(())
+    }
+
+    pub async fn get_readings(
+        &self,
+        device_id: Option<String>,
+        product_id: Option<String>,
+        start_time: Option<chrono::DateTime<chrono::Utc>>,
+        end_time: Option<chrono::DateTime<chrono::Utc>>,
+        limit: i64,
+    ) -> Result<Vec<TemperatureReading>, sqlx::Error> {
+        match (device_id, product_id, start_time, end_time) {
+            (Some(did), Some(pid), Some(start), Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND product_id = $2 AND reading_timestamp >= $3 AND reading_timestamp <= $4 ORDER BY reading_timestamp DESC LIMIT $5",
+                    did, pid, start, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), Some(pid), Some(start), None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND product_id = $2 AND reading_timestamp >= $3 ORDER BY reading_timestamp DESC LIMIT $4",
+                    did, pid, start, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), Some(pid), None, Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND product_id = $2 AND reading_timestamp <= $3 ORDER BY reading_timestamp DESC LIMIT $4",
+                    did, pid, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), None, Some(start), Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND reading_timestamp >= $2 AND reading_timestamp <= $3 ORDER BY reading_timestamp DESC LIMIT $4",
+                    did, start, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(pid), Some(start), Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE product_id = $1 AND reading_timestamp >= $2 AND reading_timestamp <= $3 ORDER BY reading_timestamp DESC LIMIT $4",
+                    pid, start, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), Some(pid), None, None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND product_id = $2 ORDER BY reading_timestamp DESC LIMIT $3",
+                    did, pid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), None, Some(start), None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND reading_timestamp >= $2 ORDER BY reading_timestamp DESC LIMIT $3",
+                    did, start, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), None, None, Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 AND reading_timestamp <= $2 ORDER BY reading_timestamp DESC LIMIT $3",
+                    did, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(pid), Some(start), None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE product_id = $1 AND reading_timestamp >= $2 ORDER BY reading_timestamp DESC LIMIT $3",
+                    pid, start, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(pid), None, Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE product_id = $1 AND reading_timestamp <= $2 ORDER BY reading_timestamp DESC LIMIT $3",
+                    pid, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(start), Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE reading_timestamp >= $1 AND reading_timestamp <= $2 ORDER BY reading_timestamp DESC LIMIT $3",
+                    start, end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(did), None, None, None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE device_id = $1 ORDER BY reading_timestamp DESC LIMIT $2",
+                    did, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(pid), None, None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE product_id = $1 ORDER BY reading_timestamp DESC LIMIT $2",
+                    pid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(start), None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE reading_timestamp >= $1 ORDER BY reading_timestamp DESC LIMIT $2",
+                    start, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None, Some(end)) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings WHERE reading_timestamp <= $1 ORDER BY reading_timestamp DESC LIMIT $2",
+                    end, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None, None) => {
+                sqlx::query_as!(
+                    TemperatureReading,
+                    "SELECT * FROM temperature_readings ORDER BY reading_timestamp DESC LIMIT $1",
+                    limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    // Temperature Thresholds
+    pub async fn create_threshold(&self, threshold: NewTemperatureThreshold) -> Result<TemperatureThreshold, sqlx::Error> {
+        sqlx::query_as!(
+            TemperatureThreshold,
+            r#"
+            INSERT INTO temperature_thresholds (
+                product_id, device_id, threshold_type, min_temperature_celsius,
+                max_temperature_celsius, duration_minutes, alert_level
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7)
+            RETURNING *
+            "#,
+            threshold.product_id,
+            threshold.device_id,
+            threshold.threshold_type,
+            threshold.min_temperature_celsius,
+            threshold.max_temperature_celsius,
+            threshold.duration_minutes,
+            threshold.alert_level
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_thresholds(&self, product_id: &str) -> Result<Vec<TemperatureThreshold>, sqlx::Error> {
+        sqlx::query_as!(
+            TemperatureThreshold,
+            "SELECT * FROM temperature_thresholds WHERE product_id = $1",
+            product_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    // Temperature Alerts
+    pub async fn create_alert(&self, alert: NewTemperatureAlert) -> Result<TemperatureAlert, sqlx::Error> {
+        sqlx::query_as!(
+            TemperatureAlert,
+            r#"
+            INSERT INTO temperature_alerts (
+                device_id, product_id, threshold_id, alert_type, alert_level,
+                temperature_celsius, threshold_value, message
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+            RETURNING *
+            "#,
+            alert.device_id,
+            alert.product_id,
+            alert.threshold_id,
+            alert.alert_type,
+            alert.alert_level,
+            alert.temperature_celsius,
+            alert.threshold_value,
+            alert.message
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_alerts(
+        &self,
+        product_id: Option<String>,
+        is_resolved: Option<bool>,
+        limit: i64,
+    ) -> Result<Vec<TemperatureAlert>, sqlx::Error> {
+        match (product_id, is_resolved) {
+            (Some(pid), Some(resolved)) => {
+                sqlx::query_as!(
+                    TemperatureAlert,
+                    "SELECT * FROM temperature_alerts WHERE product_id = $1 AND is_resolved = $2 ORDER BY created_at DESC LIMIT $3",
+                    pid, resolved, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None) => {
+                sqlx::query_as!(
+                    TemperatureAlert,
+                    "SELECT * FROM temperature_alerts WHERE product_id = $1 ORDER BY created_at DESC LIMIT $2",
+                    pid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(resolved)) => {
+                sqlx::query_as!(
+                    TemperatureAlert,
+                    "SELECT * FROM temperature_alerts WHERE is_resolved = $1 ORDER BY created_at DESC LIMIT $2",
+                    resolved, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None) => {
+                sqlx::query_as!(
+                    TemperatureAlert,
+                    "SELECT * FROM temperature_alerts ORDER BY created_at DESC LIMIT $1",
+                    limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    pub async fn acknowledge_alert(&self, alert_id: Uuid, acknowledged_by: String) -> Result<TemperatureAlert, sqlx::Error> {
+        sqlx::query_as!(
+            TemperatureAlert,
+            r#"
+            UPDATE temperature_alerts SET
+                acknowledged_by = $2,
+                acknowledged_at = NOW()
+            WHERE id = $1
+            RETURNING *
+            "#,
+            alert_id,
+            acknowledged_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn resolve_alert(&self, alert_id: Uuid, resolved_by: String) -> Result<TemperatureAlert, sqlx::Error> {
+        sqlx::query_as!(
+            TemperatureAlert,
+            r#"
+            UPDATE temperature_alerts SET
+                is_resolved = true,
+                resolved_at = NOW(),
+                resolved_by = $2
+            WHERE id = $1
+            RETURNING *
+            "#,
+            alert_id,
+            resolved_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    // Temperature Summaries (for reporting)
+    pub async fn generate_summary(
+        &self,
+        device_id: &str,
+        summary_period: &str,
+        period_start: chrono::DateTime<chrono::Utc>,
+        period_end: chrono::DateTime<chrono::Utc>,
+    ) -> Result<TemperatureSummary, sqlx::Error> {
+        let stats = sqlx::query!(
+            r#"
+            SELECT 
+                AVG(temperature_celsius) as avg_temp,
+                MIN(temperature_celsius) as min_temp,
+                MAX(temperature_celsius) as max_temp,
+                COUNT(*) as total_readings,
+                SUM(CASE WHEN is_anomaly = true THEN 1 ELSE 0 END) as anomaly_count
+            FROM temperature_readings
+            WHERE device_id = $1
+            AND reading_timestamp >= $2
+            AND reading_timestamp <= $3
+            "#,
+            device_id,
+            period_start,
+            period_end
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        // Count alerts in this period
+        let alert_count = sqlx::query_scalar!(
+            r#"
+            SELECT COUNT(*) FROM temperature_alerts
+            WHERE device_id = $1
+            AND created_at >= $2
+            AND created_at <= $3
+            "#,
+            device_id,
+            period_start,
+            period_end
+        )
+        .fetch_one(&self.pool)
+        .await?
+        .unwrap_or(0);
+
+        sqlx::query_as!(
+            TemperatureSummary,
+            r#"
+            INSERT INTO temperature_summaries (
+                device_id, summary_period, period_start, period_end,
+                avg_temperature_celsius, min_temperature_celsius, max_temperature_celsius,
+                total_readings, anomaly_count, alert_count
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
+            ON CONFLICT (device_id, summary_period, period_start, period_end)
+            DO UPDATE SET
+                avg_temperature_celsius = EXCLUDED.avg_temperature_celsius,
+                min_temperature_celsius = EXCLUDED.min_temperature_celsius,
+                max_temperature_celsius = EXCLUDED.max_temperature_celsius,
+                total_readings = EXCLUDED.total_readings,
+                anomaly_count = EXCLUDED.anomaly_count,
+                alert_count = EXCLUDED.alert_count
+            RETURNING *
+            "#,
+            device_id,
+            summary_period,
+            period_start,
+            period_end,
+            stats.avg_temp,
+            stats.min_temp,
+            stats.max_temp,
+            stats.total_readings.unwrap_or(0) as i32,
+            stats.anomaly_count.unwrap_or(0) as i32,
+            alert_count as i32
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_summaries(
+        &self,
+        device_id: &str,
+        summary_period: Option<String>,
+        limit: i64,
+    ) -> Result<Vec<TemperatureSummary>, sqlx::Error> {
+        if let Some(period) = summary_period {
+            sqlx::query_as!(
+                TemperatureSummary,
+                "SELECT * FROM temperature_summaries WHERE device_id = $1 AND summary_period = $2 ORDER BY period_start DESC LIMIT $3",
+                device_id, period, limit
+            )
+            .fetch_all(&self.pool)
+            .await
+        } else {
+            sqlx::query_as!(
+                TemperatureSummary,
+                "SELECT * FROM temperature_summaries WHERE device_id = $1 ORDER BY period_start DESC LIMIT $2",
+                device_id, limit
+            )
+            .fetch_all(&self.pool)
+            .await
+        }
+    }
+}
diff --git a/backend/src/services/quality_service.rs b/backend/src/services/quality_service.rs
new file mode 100644
index 00000000..2d1a295d
--- /dev/null
+++ b/backend/src/services/quality_service.rs
@@ -0,0 +1,621 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+use crate::models::quality::*;
+use rust_decimal::Decimal;
+
+pub struct QualityService {
+    pool: PgPool,
+}
+
+impl QualityService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    // QC Checkpoints
+    pub async fn create_checkpoint(&self, checkpoint: NewQCCheckpoint) -> Result<QCCheckpoint, sqlx::Error> {
+        sqlx::query_as!(
+            QCCheckpoint,
+            r#"
+            INSERT INTO qc_checkpoints (
+                checkpoint_id, name, description, checkpoint_type, category,
+                product_category, required_fields, acceptance_criteria
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+            RETURNING *
+            "#,
+            checkpoint.checkpoint_id,
+            checkpoint.name,
+            checkpoint.description,
+            checkpoint.checkpoint_type,
+            checkpoint.category,
+            checkpoint.product_category,
+            checkpoint.required_fields,
+            checkpoint.acceptance_criteria
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_checkpoint(&self, checkpoint_id: &str) -> Result<Option<QCCheckpoint>, sqlx::Error> {
+        sqlx::query_as!(
+            QCCheckpoint,
+            "SELECT * FROM qc_checkpoints WHERE checkpoint_id = $1",
+            checkpoint_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_checkpoints(
+        &self,
+        checkpoint_type: Option<String>,
+        category: Option<String>,
+        is_active: Option<bool>,
+    ) -> Result<Vec<QCCheckpoint>, sqlx::Error> {
+        match (checkpoint_type, category, is_active) {
+            (Some(ct), Some(cat), Some(active)) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE checkpoint_type = $1 AND category = $2 AND is_active = $3 ORDER BY created_at DESC",
+                    ct, cat, active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(ct), Some(cat), None) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE checkpoint_type = $1 AND category = $2 ORDER BY created_at DESC",
+                    ct, cat
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(ct), None, Some(active)) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE checkpoint_type = $1 AND is_active = $2 ORDER BY created_at DESC",
+                    ct, active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(cat), Some(active)) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE category = $1 AND is_active = $2 ORDER BY created_at DESC",
+                    cat, active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(ct), None, None) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE checkpoint_type = $1 ORDER BY created_at DESC",
+                    ct
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(cat), None) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE category = $1 ORDER BY created_at DESC",
+                    cat
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(active)) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints WHERE is_active = $1 ORDER BY created_at DESC",
+                    active
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None) => {
+                sqlx::query_as!(
+                    QCCheckpoint,
+                    "SELECT * FROM qc_checkpoints ORDER BY created_at DESC"
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    // QC Workflows
+    pub async fn create_workflow(&self, workflow: NewQCWorkflow) -> Result<QCWorkflow, sqlx::Error> {
+        sqlx::query_as!(
+            QCWorkflow,
+            r#"
+            INSERT INTO qc_workflows (
+                workflow_id, name, description, product_category, checkpoint_ids
+            ) VALUES ($1, $2, $3, $4, $5)
+            RETURNING *
+            "#,
+            workflow.workflow_id,
+            workflow.name,
+            workflow.description,
+            workflow.product_category,
+            &workflow.checkpoint_ids
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_workflow(&self, workflow_id: &str) -> Result<Option<QCWorkflow>, sqlx::Error> {
+        sqlx::query_as!(
+            QCWorkflow,
+            "SELECT * FROM qc_workflows WHERE workflow_id = $1",
+            workflow_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_workflows(&self, is_active: Option<bool>) -> Result<Vec<QCWorkflow>, sqlx::Error> {
+        if let Some(active) = is_active {
+            sqlx::query_as!(
+                QCWorkflow,
+                "SELECT * FROM qc_workflows WHERE is_active = $1 ORDER BY created_at DESC",
+                active
+            )
+            .fetch_all(&self.pool)
+            .await
+        } else {
+            sqlx::query_as!(
+                QCWorkflow,
+                "SELECT * FROM qc_workflows ORDER BY created_at DESC"
+            )
+            .fetch_all(&self.pool)
+            .await
+        }
+    }
+
+    // QC Inspections
+    pub async fn create_inspection(&self, inspection: NewQCInspection) -> Result<QCInspection, sqlx::Error> {
+        sqlx::query_as!(
+            QCInspection,
+            r#"
+            INSERT INTO qc_inspections (
+                inspection_id, product_id, checkpoint_id, workflow_id,
+                inspector_id, location, results, quality_metrics, notes, evidence_documents
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
+            RETURNING *
+            "#,
+            inspection.inspection_id,
+            inspection.product_id,
+            inspection.checkpoint_id,
+            inspection.workflow_id,
+            inspection.inspector_id,
+            inspection.location,
+            inspection.results,
+            inspection.quality_metrics,
+            inspection.notes,
+            &inspection.evidence_documents
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn update_inspection_status(
+        &self,
+        inspection_id: &str,
+        status: String,
+        is_passed: Option<bool>,
+        failure_reason: Option<String>,
+    ) -> Result<QCInspection, sqlx::Error> {
+        sqlx::query_as!(
+            QCInspection,
+            r#"
+            UPDATE qc_inspections SET
+                status = $2,
+                inspection_date = NOW(),
+                is_passed = $3,
+                failure_reason = $4
+            WHERE inspection_id = $1
+            RETURNING *
+            "#,
+            inspection_id,
+            status,
+            is_passed,
+            failure_reason
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_inspection(&self, inspection_id: &str) -> Result<Option<QCInspection>, sqlx::Error> {
+        sqlx::query_as!(
+            QCInspection,
+            "SELECT * FROM qc_inspections WHERE inspection_id = $1",
+            inspection_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_inspections(
+        &self,
+        product_id: Option<String>,
+        checkpoint_id: Option<String>,
+        status: Option<String>,
+        limit: i64,
+    ) -> Result<Vec<QCInspection>, sqlx::Error> {
+        match (product_id, checkpoint_id, status) {
+            (Some(pid), Some(cid), Some(s)) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE product_id = $1 AND checkpoint_id = $2 AND status = $3 ORDER BY inspection_date DESC LIMIT $4",
+                    pid, cid, s, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), Some(cid), None) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE product_id = $1 AND checkpoint_id = $2 ORDER BY inspection_date DESC LIMIT $3",
+                    pid, cid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None, Some(s)) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE product_id = $1 AND status = $2 ORDER BY inspection_date DESC LIMIT $3",
+                    pid, s, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(cid), Some(s)) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE checkpoint_id = $1 AND status = $2 ORDER BY inspection_date DESC LIMIT $3",
+                    cid, s, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None, None) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE product_id = $1 ORDER BY inspection_date DESC LIMIT $2",
+                    pid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(cid), None) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE checkpoint_id = $1 ORDER BY inspection_date DESC LIMIT $2",
+                    cid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(s)) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections WHERE status = $1 ORDER BY inspection_date DESC LIMIT $2",
+                    s, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None) => {
+                sqlx::query_as!(
+                    QCInspection,
+                    "SELECT * FROM qc_inspections ORDER BY inspection_date DESC LIMIT $1",
+                    limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    // Execute Workflow
+    pub async fn execute_workflow(&self, request: WorkflowExecutionRequest) -> Result<WorkflowExecutionResult, Box<dyn std::error::Error>> {
+        let workflow = self.get_workflow(&request.workflow_id).await?
+            .ok_or_else(|| "Workflow not found")?;
+
+        let mut inspections = Vec::new();
+        let mut passed = 0;
+        let mut failed = 0;
+        let mut skipped = 0;
+
+        for checkpoint_id in &workflow.checkpoint_ids {
+            let inspection_id = format!("INS-{}", Uuid::new_v4());
+            
+            let inspection = self.create_inspection(NewQCInspection {
+                inspection_id: inspection_id.clone(),
+                product_id: request.product_id.clone(),
+                checkpoint_id: checkpoint_id.clone(),
+                workflow_id: Some(request.workflow_id.clone()),
+                inspector_id: Some(request.inspector_id.clone()),
+                location: None,
+                results: serde_json::json!({}),
+                quality_metrics: serde_json::json!({}),
+                notes: None,
+                evidence_documents: vec![],
+            }).await?;
+
+            inspections.push(inspection);
+        }
+
+        let total = workflow.checkpoint_ids.len() as i32;
+        let completed = inspections.len() as i32;
+        let overall_status = if failed == 0 { "passed" } else { "failed" };
+
+        Ok(WorkflowExecutionResult {
+            workflow_id: request.workflow_id,
+            product_id: request.product_id,
+            total_checkpoints: total,
+            completed,
+            passed,
+            failed,
+            skipped,
+            overall_status: overall_status.to_string(),
+            inspections,
+        })
+    }
+
+    // Non-Conformances
+    pub async fn create_non_conformance(&self, nc: NewNonConformance) -> Result<NonConformance, sqlx::Error> {
+        sqlx::query_as!(
+            NonConformance,
+            r#"
+            INSERT INTO non_conformances (
+                nc_id, inspection_id, product_id, severity, category,
+                description, root_cause, correction_action, responsible_party, due_date
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
+            RETURNING *
+            "#,
+            nc.nc_id,
+            nc.inspection_id,
+            nc.product_id,
+            nc.severity,
+            nc.category,
+            nc.description,
+            nc.root_cause,
+            nc.correction_action,
+            nc.responsible_party,
+            nc.due_date
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn update_non_conformance(
+        &self,
+        nc_id: &str,
+        correction_action: Option<String>,
+        correction_status: String,
+        responsible_party: Option<String>,
+    ) -> Result<NonConformance, sqlx::Error> {
+        let resolved_at = if correction_status == "resolved" {
+            Some(chrono::Utc::now())
+        } else {
+            None
+        };
+
+        sqlx::query_as!(
+            NonConformance,
+            r#"
+            UPDATE non_conformances SET
+                correction_action = $2,
+                correction_status = $3,
+                responsible_party = $4,
+                resolved_at = $5
+            WHERE nc_id = $1
+            RETURNING *
+            "#,
+            nc_id,
+            correction_action,
+            correction_status,
+            responsible_party,
+            resolved_at
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn verify_non_conformance(
+        &self,
+        nc_id: &str,
+        verified_by: String,
+    ) -> Result<NonConformance, sqlx::Error> {
+        sqlx::query_as!(
+            NonConformance,
+            r#"
+            UPDATE non_conformances SET
+                correction_status = 'verified',
+                verified_by = $2,
+                verified_at = NOW()
+            WHERE nc_id = $1
+            RETURNING *
+            "#,
+            nc_id,
+            verified_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_non_conformances(
+        &self,
+        product_id: Option<String>,
+        severity: Option<String>,
+        status: Option<String>,
+        limit: i64,
+    ) -> Result<Vec<NonConformance>, sqlx::Error> {
+        match (product_id, severity, status) {
+            (Some(pid), Some(s), Some(st)) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE product_id = $1 AND severity = $2 AND correction_status = $3 ORDER BY created_at DESC LIMIT $4",
+                    pid, s, st, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), Some(s), None) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE product_id = $1 AND severity = $2 ORDER BY created_at DESC LIMIT $3",
+                    pid, s, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None, Some(st)) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE product_id = $1 AND correction_status = $2 ORDER BY created_at DESC LIMIT $3",
+                    pid, st, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(s), Some(st)) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE severity = $1 AND correction_status = $2 ORDER BY created_at DESC LIMIT $3",
+                    s, st, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None, None) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE product_id = $1 ORDER BY created_at DESC LIMIT $2",
+                    pid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(s), None) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE severity = $1 ORDER BY created_at DESC LIMIT $2",
+                    s, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(st)) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances WHERE correction_status = $1 ORDER BY created_at DESC LIMIT $2",
+                    st, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None) => {
+                sqlx::query_as!(
+                    NonConformance,
+                    "SELECT * FROM non_conformances ORDER BY created_at DESC LIMIT $1",
+                    limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    // Quality Metrics
+    pub async fn create_metric(&self, metric: NewQualityMetric) -> Result<QualityMetric, sqlx::Error> {
+        // Check if within threshold
+        let is_within_threshold = if let (Some(min), Some(max)) = (metric.threshold_min, metric.threshold_max) {
+            Some(metric.metric_value >= min && metric.metric_value <= max)
+        } else if let Some(min) = metric.threshold_min {
+            Some(metric.metric_value >= min)
+        } else if let Some(max) = metric.threshold_max {
+            Some(metric.metric_value <= max)
+        } else {
+            None
+        };
+
+        sqlx::query_as!(
+            QualityMetric,
+            r#"
+            INSERT INTO quality_metrics (
+                metric_id, product_id, metric_type, metric_value, unit,
+                measurement_period_start, measurement_period_end,
+                target_value, threshold_min, threshold_max, is_within_threshold, notes
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12)
+            RETURNING *
+            "#,
+            metric.metric_id,
+            metric.product_id,
+            metric.metric_type,
+            metric.metric_value,
+            metric.unit,
+            metric.measurement_period_start,
+            metric.measurement_period_end,
+            metric.target_value,
+            metric.threshold_min,
+            metric.threshold_max,
+            is_within_threshold,
+            metric.notes
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_metrics(
+        &self,
+        product_id: Option<String>,
+        metric_type: Option<String>,
+        limit: i64,
+    ) -> Result<Vec<QualityMetric>, sqlx::Error> {
+        match (product_id, metric_type) {
+            (Some(pid), Some(mt)) => {
+                sqlx::query_as!(
+                    QualityMetric,
+                    "SELECT * FROM quality_metrics WHERE product_id = $1 AND metric_type = $2 ORDER BY measurement_period_start DESC LIMIT $3",
+                    pid, mt, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(pid), None) => {
+                sqlx::query_as!(
+                    QualityMetric,
+                    "SELECT * FROM quality_metrics WHERE product_id = $1 ORDER BY measurement_period_start DESC LIMIT $2",
+                    pid, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(mt)) => {
+                sqlx::query_as!(
+                    QualityMetric,
+                    "SELECT * FROM quality_metrics WHERE metric_type = $1 ORDER BY measurement_period_start DESC LIMIT $2",
+                    mt, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None) => {
+                sqlx::query_as!(
+                    QualityMetric,
+                    "SELECT * FROM quality_metrics ORDER BY measurement_period_start DESC LIMIT $1",
+                    limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+}
diff --git a/backend/src/services/regulatory_service.rs b/backend/src/services/regulatory_service.rs
new file mode 100644
index 00000000..e383f213
--- /dev/null
+++ b/backend/src/services/regulatory_service.rs
@@ -0,0 +1,466 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+use crate::models::regulatory::*;
+use crate::compliance::{ComplianceRule, ComplianceType, ComplianceValidator};
+use serde_json::json;
+
+pub struct RegulatoryService {
+    pool: PgPool,
+}
+
+impl RegulatoryService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    // Regulatory Requirements Management
+    pub async fn create_requirement(&self, req: NewRegulatoryRequirement) -> Result<RegulatoryRequirement, sqlx::Error> {
+        sqlx::query_as!(
+            RegulatoryRequirement,
+            r#"
+            INSERT INTO regulatory_requirements (
+                requirement_id, name, description, regulation_type, category,
+                severity, required_fields, validation_logic, is_active,
+                effective_date, expiry_date
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, true, $9, $10)
+            RETURNING *
+            "#,
+            req.requirement_id,
+            req.name,
+            req.description,
+            req.regulation_type,
+            req.category,
+            req.severity,
+            req.required_fields,
+            req.validation_logic,
+            req.effective_date.unwrap_or(chrono::Utc::now()),
+            req.expiry_date
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_requirement(&self, requirement_id: &str) -> Result<Option<RegulatoryRequirement>, sqlx::Error> {
+        sqlx::query_as!(
+            RegulatoryRequirement,
+            "SELECT * FROM regulatory_requirements WHERE requirement_id = $1",
+            requirement_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_requirements(
+        &self,
+        regulation_type: Option<String>,
+        category: Option<String>,
+        is_active: Option<bool>,
+    ) -> Result<Vec<RegulatoryRequirement>, sqlx::Error> {
+        let mut query = "SELECT * FROM regulatory_requirements WHERE 1=1".to_string();
+        let mut bindings = Vec::new();
+        let mut bind_index = 1;
+
+        if let Some(reg_type) = regulation_type {
+            query.push_str(&format!(" AND regulation_type = ${}", bind_index));
+            bindings.push(reg_type);
+            bind_index += 1;
+        }
+        if let Some(cat) = category {
+            query.push_str(&format!(" AND category = ${}", bind_index));
+            bindings.push(cat);
+            bind_index += 1;
+        }
+        if let Some(active) = is_active {
+            query.push_str(&format!(" AND is_active = ${}", bind_index));
+            bindings.push(active.to_string());
+            bind_index += 1;
+        }
+
+        query.push_str(" ORDER BY created_at DESC");
+
+        let mut q = sqlx::QueryBuilder::new(query);
+        for binding in bindings {
+            q = q.bind(binding);
+        }
+
+        q.build_query_as::<RegulatoryRequirement>()
+            .fetch_all(&self.pool)
+            .await
+    }
+
+    pub async fn update_requirement(&self, requirement_id: &str, req: NewRegulatoryRequirement) -> Result<RegulatoryRequirement, sqlx::Error> {
+        sqlx::query_as!(
+            RegulatoryRequirement,
+            r#"
+            UPDATE regulatory_requirements SET
+                name = $2,
+                description = $3,
+                regulation_type = $4,
+                category = $5,
+                severity = $6,
+                required_fields = $7,
+                validation_logic = $8,
+                expiry_date = $9
+            WHERE requirement_id = $1
+            RETURNING *
+            "#,
+            requirement_id,
+            req.name,
+            req.description,
+            req.regulation_type,
+            req.category,
+            req.severity,
+            req.required_fields,
+            req.validation_logic,
+            req.expiry_date
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    // Product Compliance Management
+    pub async fn create_product_compliance(&self, compliance: NewProductCompliance) -> Result<ProductCompliance, sqlx::Error> {
+        sqlx::query_as!(
+            ProductCompliance,
+            r#"
+            INSERT INTO product_compliance (
+                product_id, requirement_id, status, notes, checked_by
+            ) VALUES ($1, $2, $3, $4, $5)
+            RETURNING *
+            "#,
+            compliance.product_id,
+            compliance.requirement_id,
+            compliance.status,
+            compliance.notes,
+            compliance.checked_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_product_compliance(&self, product_id: &str, requirement_id: &str) -> Result<Option<ProductCompliance>, sqlx::Error> {
+        sqlx::query_as!(
+            ProductCompliance,
+            "SELECT * FROM product_compliance WHERE product_id = $1 AND requirement_id = $2",
+            product_id,
+            requirement_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_product_compliance(&self, product_id: &str) -> Result<Vec<ProductCompliance>, sqlx::Error> {
+        sqlx::query_as!(
+            ProductCompliance,
+            "SELECT * FROM product_compliance WHERE product_id = $1 ORDER BY created_at DESC",
+            product_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    pub async fn update_product_compliance(
+        &self,
+        product_id: &str,
+        requirement_id: &str,
+        status: String,
+        violations: Vec<String>,
+        warnings: Vec<String>,
+        notes: Option<String>,
+        checked_by: String,
+    ) -> Result<ProductCompliance, sqlx::Error> {
+        sqlx::query_as!(
+            ProductCompliance,
+            r#"
+            UPDATE product_compliance SET
+                status = $3,
+                last_checked_at = NOW(),
+                last_check_result = $4,
+                violations = $5,
+                warnings = $6,
+                notes = $7,
+                checked_by = $8
+            WHERE product_id = $1 AND requirement_id = $2
+            RETURNING *
+            "#,
+            product_id,
+            requirement_id,
+            status,
+            json!({"checked_at": chrono::Utc::now().to_rfc3339()}),
+            json!(violations),
+            json!(warnings),
+            notes,
+            checked_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    // Automated Compliance Check
+    pub async fn run_compliance_check(&self, request: ComplianceCheckRequest) -> Result<ComplianceCheckResult, Box<dyn std::error::Error>> {
+        let requirement_ids = if let Some(ids) = request.requirement_ids {
+            ids
+        } else {
+            // Get all active requirements
+            let reqs = self.list_requirements(None, None, Some(true)).await?;
+            reqs.iter().map(|r| r.requirement_id.clone()).collect()
+        };
+
+        let mut details = Vec::new();
+        let mut compliant = 0;
+        let mut non_compliant = 0;
+        let mut pending = 0;
+
+        for req_id in &requirement_ids {
+            if let Some(requirement) = self.get_requirement(req_id).await? {
+                // Get product data for validation
+                let product_data = self.get_product_data_for_validation(&request.product_id).await?;
+                
+                // Create compliance rule from requirement
+                let rule = self.requirement_to_rule(&requirement);
+                
+                // Validate
+                let validation_result = ComplianceValidator::validate(&rule, &product_data);
+                
+                let status = if validation_result.is_compliant {
+                    "compliant".to_string()
+                } else {
+                    "non_compliant".to_string()
+                };
+
+                // Update product compliance
+                let _ = self.update_product_compliance(
+                    &request.product_id,
+                    req_id,
+                    status.clone(),
+                    validation_result.violations.clone(),
+                    validation_result.warnings.clone(),
+                    None,
+                    &request.performed_by,
+                ).await;
+
+                // Log audit trail
+                let _ = self.create_audit_trail(NewComplianceAuditTrail {
+                    product_id: request.product_id.clone(),
+                    requirement_id: Some(req_id.clone()),
+                    action_type: "check".to_string(),
+                    previous_status: None,
+                    new_status: Some(status.clone()),
+                    action_details: json!({
+                        "violations": validation_result.violations,
+                        "warnings": validation_result.warnings
+                    }),
+                    performed_by: request.performed_by.clone(),
+                    ip_address: None,
+                    user_agent: None,
+                }).await;
+
+                details.push(ComplianceDetail {
+                    requirement_id: req_id.clone(),
+                    requirement_name: requirement.name,
+                    regulation_type: requirement.regulation_type,
+                    status,
+                    violations: validation_result.violations,
+                    warnings: validation_result.warnings,
+                });
+
+                if validation_result.is_compliant {
+                    compliant += 1;
+                } else {
+                    non_compliant += 1;
+                }
+            } else {
+                pending += 1;
+            }
+        }
+
+        Ok(ComplianceCheckResult {
+            product_id: request.product_id,
+            total_requirements: requirement_ids.len() as i32,
+            compliant,
+            non_compliant,
+            pending,
+            details,
+        })
+    }
+
+    async fn get_product_data_for_validation(&self, product_id: &str) -> Result<serde_json::Value, sqlx::Error> {
+        // Fetch product data from database
+        let product = sqlx::query!(
+            "SELECT * FROM products WHERE id = $1",
+            product_id
+        )
+        .fetch_optional(&self.pool)
+        .await?;
+
+        if let Some(p) = product {
+            Ok(json!({
+                "id": p.id,
+                "name": p.name,
+                "category": p.category,
+                "origin_location": p.origin_location,
+                "certifications": p.certifications,
+                "custom_fields": p.custom_fields,
+                "tags": p.tags
+            }))
+        } else {
+            Ok(json!({}))
+        }
+    }
+
+    fn requirement_to_rule(&self, requirement: &RegulatoryRequirement) -> ComplianceRule {
+        ComplianceRule {
+            rule_id: requirement.requirement_id.clone(),
+            compliance_type: self.map_regulation_type(&requirement.regulation_type),
+            description: requirement.description.clone().unwrap_or_default(),
+            validation_logic: requirement.validation_logic.clone().unwrap_or_default(),
+            required_fields: requirement.required_fields
+                .as_array()
+                .map(|arr| arr.iter()
+                    .filter_map(|v| v.as_str())
+                    .map(|s| s.to_string())
+                    .collect())
+                .unwrap_or_default(),
+            is_active: requirement.is_active,
+        }
+    }
+
+    fn map_regulation_type(&self, reg_type: &str) -> ComplianceType {
+        match reg_type.to_lowercase().as_str() {
+            "gdpr" => ComplianceType::GDPR,
+            "fda" | "fda_21_cfr_11" => ComplianceType::FDA21CFR11,
+            "fsma" => ComplianceType::FSMA,
+            "conflict_minerals" => ComplianceType::ConflictMinerals,
+            "organic" | "organic_certification" => ComplianceType::OrganicCertification,
+            "soc2" => ComplianceType::SOC2,
+            "iso" | "iso27001" => ComplianceType::ISO27001,
+            _ => ComplianceType::GDPR, // Default
+        }
+    }
+
+    // Audit Trail
+    pub async fn create_audit_trail(&self, audit: NewComplianceAuditTrail) -> Result<ComplianceAuditTrail, sqlx::Error> {
+        sqlx::query_as!(
+            ComplianceAuditTrail,
+            r#"
+            INSERT INTO compliance_audit_trail (
+                product_id, requirement_id, action_type, previous_status,
+                new_status, action_details, performed_by, ip_address, user_agent
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9)
+            RETURNING *
+            "#,
+            audit.product_id,
+            audit.requirement_id,
+            audit.action_type,
+            audit.previous_status,
+            audit.new_status,
+            audit.action_details,
+            audit.performed_by,
+            audit.ip_address,
+            audit.user_agent
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_audit_trail(&self, product_id: &str, limit: i64) -> Result<Vec<ComplianceAuditTrail>, sqlx::Error> {
+        sqlx::query_as!(
+            ComplianceAuditTrail,
+            "SELECT * FROM compliance_audit_trail WHERE product_id = $1 ORDER BY performed_at DESC LIMIT $2",
+            product_id,
+            limit
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    // Compliance Reports
+    pub async fn generate_report(&self, report: NewComplianceReport) -> Result<ComplianceReport, sqlx::Error> {
+        let report_id = format!("RPT-{}", Uuid::new_v4());
+        
+        // Calculate report data based on scope
+        let scope = &report.scope;
+        let report_data = self.calculate_report_data(scope).await?;
+        
+        let total = report_data["total_products"].as_i64().unwrap_or(0) as i32;
+        let compliant = report_data["compliant"].as_i64().unwrap_or(0) as i32;
+        let non_compliant = report_data["non_compliant"].as_i64().unwrap_or(0) as i32;
+        let pending = report_data["pending"].as_i64().unwrap_or(0) as i32;
+        
+        let compliance_rate = if total > 0 {
+            Some((compliant as f64 / total as f64 * 100.0).into())
+        } else {
+            None
+        };
+
+        sqlx::query_as!(
+            ComplianceReport,
+            r#"
+            INSERT INTO compliance_reports (
+                report_id, report_type, scope, generated_by, period_start,
+                period_end, total_products_checked, compliant_count,
+                non_compliant_count, pending_count, compliance_rate, report_data, status
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, 'completed')
+            RETURNING *
+            "#,
+            report_id,
+            report.report_type,
+            report.scope,
+            report.generated_by,
+            report.period_start,
+            report.period_end,
+            total,
+            compliant,
+            non_compliant,
+            pending,
+            compliance_rate,
+            report_data
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    async fn calculate_report_data(&self, scope: &serde_json::Value) -> Result<serde_json::Value, sqlx::Error> {
+        // Simple aggregation based on scope
+        let result = sqlx::query!(
+            r#"
+            SELECT 
+                COUNT(DISTINCT pc.product_id) as total_products,
+                SUM(CASE WHEN pc.status = 'compliant' THEN 1 ELSE 0 END) as compliant,
+                SUM(CASE WHEN pc.status = 'non_compliant' THEN 1 ELSE 0 END) as non_compliant,
+                SUM(CASE WHEN pc.status = 'pending' THEN 1 ELSE 0 END) as pending
+            FROM product_compliance pc
+            WHERE pc.last_checked_at IS NOT NULL
+            "#
+        )
+        .fetch_one(&self.pool)
+        .await?;
+
+        Ok(json!({
+            "total_products": result.total_products.unwrap_or(0),
+            "compliant": result.compliant.unwrap_or(0),
+            "non_compliant": result.non_compliant.unwrap_or(0),
+            "pending": result.pending.unwrap_or(0)
+        }))
+    }
+
+    pub async fn get_report(&self, report_id: &str) -> Result<Option<ComplianceReport>, sqlx::Error> {
+        sqlx::query_as!(
+            ComplianceReport,
+            "SELECT * FROM compliance_reports WHERE report_id = $1",
+            report_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_reports(&self, limit: i64) -> Result<Vec<ComplianceReport>, sqlx::Error> {
+        sqlx::query_as!(
+            ComplianceReport,
+            "SELECT * FROM compliance_reports ORDER BY generated_at DESC LIMIT $1",
+            limit
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+}
diff --git a/backend/src/services/supplier_service.rs b/backend/src/services/supplier_service.rs
new file mode 100644
index 00000000..082dcf92
--- /dev/null
+++ b/backend/src/services/supplier_service.rs
@@ -0,0 +1,518 @@
+use sqlx::PgPool;
+use uuid::Uuid;
+use crate::models::supplier::*;
+use rust_decimal::Decimal;
+
+pub struct SupplierService {
+    pool: PgPool,
+}
+
+impl SupplierService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    // Supplier Management
+    pub async fn create_supplier(&self, supplier: NewSupplier) -> Result<Supplier, sqlx::Error> {
+        sqlx::query_as!(
+            Supplier,
+            r#"
+            INSERT INTO suppliers (
+                supplier_id, name, legal_name, tax_id, registration_number,
+                business_type, tier, contact_email, contact_phone, address,
+                city, country, postal_code, website, metadata
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10, $11, $12, $13, $14, $15)
+            RETURNING *
+            "#,
+            supplier.supplier_id,
+            supplier.name,
+            supplier.legal_name,
+            supplier.tax_id,
+            supplier.registration_number,
+            supplier.business_type,
+            supplier.tier,
+            supplier.contact_email,
+            supplier.contact_phone,
+            supplier.address,
+            supplier.city,
+            supplier.country,
+            supplier.postal_code,
+            supplier.website,
+            supplier.metadata.unwrap_or(serde_json::json!({}))
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_supplier(&self, supplier_id: &str) -> Result<Option<Supplier>, sqlx::Error> {
+        sqlx::query_as!(
+            Supplier,
+            "SELECT * FROM suppliers WHERE supplier_id = $1",
+            supplier_id
+        )
+        .fetch_optional(&self.pool)
+        .await
+    }
+
+    pub async fn list_suppliers(
+        &self,
+        business_type: Option<String>,
+        tier: Option<String>,
+        verification_status: Option<String>,
+        is_verified: Option<bool>,
+        limit: i64,
+    ) -> Result<Vec<Supplier>, sqlx::Error> {
+        match (business_type, tier, verification_status, is_verified) {
+            (Some(bt), Some(t), Some(vs), Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND tier = $2 AND verification_status = $3 AND is_verified = $4 ORDER BY created_at DESC LIMIT $5",
+                    bt, t, vs, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), Some(t), Some(vs), None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND tier = $2 AND verification_status = $3 ORDER BY created_at DESC LIMIT $4",
+                    bt, t, vs, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), Some(t), None, Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND tier = $2 AND is_verified = $3 ORDER BY created_at DESC LIMIT $4",
+                    bt, t, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), None, Some(vs), Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND verification_status = $2 AND is_verified = $3 ORDER BY created_at DESC LIMIT $4",
+                    bt, vs, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(t), Some(vs), Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE tier = $1 AND verification_status = $2 AND is_verified = $3 ORDER BY created_at DESC LIMIT $4",
+                    t, vs, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), Some(t), None, None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND tier = $2 ORDER BY created_at DESC LIMIT $3",
+                    bt, t, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), None, Some(vs), None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND verification_status = $2 ORDER BY created_at DESC LIMIT $3",
+                    bt, vs, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), None, None, Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 AND is_verified = $2 ORDER BY created_at DESC LIMIT $3",
+                    bt, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(t), Some(vs), None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE tier = $1 AND verification_status = $2 ORDER BY created_at DESC LIMIT $3",
+                    t, vs, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(t), None, Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE tier = $1 AND is_verified = $2 ORDER BY created_at DESC LIMIT $3",
+                    t, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(vs), Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE verification_status = $1 AND is_verified = $2 ORDER BY created_at DESC LIMIT $3",
+                    vs, iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (Some(bt), None, None, None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE business_type = $1 ORDER BY created_at DESC LIMIT $2",
+                    bt, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, Some(t), None, None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE tier = $1 ORDER BY created_at DESC LIMIT $2",
+                    t, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, Some(vs), None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE verification_status = $1 ORDER BY created_at DESC LIMIT $2",
+                    vs, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None, Some(iv)) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers WHERE is_verified = $1 ORDER BY created_at DESC LIMIT $2",
+                    iv, limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+            (None, None, None, None) => {
+                sqlx::query_as!(
+                    Supplier,
+                    "SELECT * FROM suppliers ORDER BY created_at DESC LIMIT $1",
+                    limit
+                )
+                .fetch_all(&self.pool)
+                .await
+            }
+        }
+    }
+
+    pub async fn update_supplier_verification(
+        &self,
+        supplier_id: &str,
+        verification_status: String,
+        verified_by: String,
+        notes: Option<String>,
+    ) -> Result<Supplier, sqlx::Error> {
+        let is_verified = verification_status == "verified";
+        let verification_date = if is_verified {
+            Some(chrono::Utc::now())
+        } else {
+            None
+        };
+
+        sqlx::query_as!(
+            Supplier,
+            r#"
+            UPDATE suppliers SET
+                verification_status = $2,
+                is_verified = $3,
+                verification_date = $4,
+                verified_by = $5
+            WHERE supplier_id = $1
+            RETURNING *
+            "#,
+            supplier_id,
+            verification_status,
+            is_verified,
+            verification_date,
+            verified_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    // Supplier Ratings
+    pub async fn create_rating(&self, rating: NewSupplierRating) -> Result<SupplierRating, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierRating,
+            r#"
+            INSERT INTO supplier_ratings (
+                supplier_id, rater_id, rating_type, score, comment,
+                rating_period_start, rating_period_end
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7)
+            RETURNING *
+            "#,
+            rating.supplier_id,
+            rating.rater_id,
+            rating.rating_type,
+            rating.score,
+            rating.comment,
+            rating.rating_period_start,
+            rating.rating_period_end
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_ratings(&self, supplier_id: &str, limit: i64) -> Result<Vec<SupplierRating>, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierRating,
+            "SELECT * FROM supplier_ratings WHERE supplier_id = $1 ORDER BY created_at DESC LIMIT $2",
+            supplier_id,
+            limit
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    pub async fn get_average_rating(&self, supplier_id: &str, rating_type: Option<String>) -> Result<Option<Decimal>, sqlx::Error> {
+        let query = if let Some(rt) = rating_type {
+            sqlx::query_scalar!(
+                "SELECT AVG(score) FROM supplier_ratings WHERE supplier_id = $1 AND rating_type = $2",
+                supplier_id,
+                rt
+            )
+        } else {
+            sqlx::query_scalar!(
+                "SELECT AVG(score) FROM supplier_ratings WHERE supplier_id = $1",
+                supplier_id
+            )
+        };
+
+        query.fetch_one(&self.pool).await
+    }
+
+    // Supplier Performance
+    pub async fn create_performance(&self, perf: NewSupplierPerformance) -> Result<SupplierPerformance, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierPerformance,
+            r#"
+            INSERT INTO supplier_performance (
+                supplier_id, metric_type, metric_value, unit,
+                measurement_period_start, measurement_period_end,
+                target_value, benchmark_value
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+            RETURNING *
+            "#,
+            perf.supplier_id,
+            perf.metric_type,
+            perf.metric_value,
+            perf.unit,
+            perf.measurement_period_start,
+            perf.measurement_period_end,
+            perf.target_value,
+            perf.benchmark_value
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_performance(&self, supplier_id: &str, limit: i64) -> Result<Vec<SupplierPerformance>, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierPerformance,
+            "SELECT * FROM supplier_performance WHERE supplier_id = $1 ORDER BY measurement_period_start DESC LIMIT $2",
+            supplier_id,
+            limit
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    // Supplier Compliance
+    pub async fn create_compliance(&self, compliance: NewSupplierCompliance) -> Result<SupplierCompliance, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierCompliance,
+            r#"
+            INSERT INTO supplier_compliance (
+                supplier_id, compliance_type, certificate_number, issuing_authority,
+                issue_date, expiry_date, document_url, verification_notes
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8)
+            RETURNING *
+            "#,
+            compliance.supplier_id,
+            compliance.compliance_type,
+            compliance.certificate_number,
+            compliance.issuing_authority,
+            compliance.issue_date,
+            compliance.expiry_date,
+            compliance.document_url,
+            compliance.verification_notes
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn verify_compliance(
+        &self,
+        compliance_id: Uuid,
+        verified_by: String,
+        status: String,
+    ) -> Result<SupplierCompliance, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierCompliance,
+            r#"
+            UPDATE supplier_compliance SET
+                status = $2,
+                verified_by = $3,
+                verified_at = NOW()
+            WHERE id = $1
+            RETURNING *
+            "#,
+            compliance_id,
+            status,
+            verified_by
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_compliance(&self, supplier_id: &str) -> Result<Vec<SupplierCompliance>, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierCompliance,
+            "SELECT * FROM supplier_compliance WHERE supplier_id = $1 ORDER BY created_at DESC",
+            supplier_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    // Supplier Products
+    pub async fn add_supplier_product(&self, sp: NewSupplierProduct) -> Result<SupplierProduct, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierProduct,
+            r#"
+            INSERT INTO supplier_products (
+                supplier_id, product_id, is_primary_supplier, supply_capacity,
+                lead_time_days, unit_price, currency, min_order_quantity,
+                contract_start_date, contract_end_date
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9, $10)
+            RETURNING *
+            "#,
+            sp.supplier_id,
+            sp.product_id,
+            sp.is_primary_supplier,
+            sp.supply_capacity,
+            sp.lead_time_days,
+            sp.unit_price,
+            sp.currency,
+            sp.min_order_quantity,
+            sp.contract_start_date,
+            sp.contract_end_date
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_supplier_products(&self, supplier_id: &str) -> Result<Vec<SupplierProduct>, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierProduct,
+            "SELECT * FROM supplier_products WHERE supplier_id = $1",
+            supplier_id
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+
+    // Supplier Summary
+    pub async fn get_supplier_summary(&self, supplier_id: &str) -> Result<Option<SupplierSummary>, sqlx::Error> {
+        let supplier = self.get_supplier(supplier_id).await?;
+        
+        if let Some(s) = supplier {
+            let overall_rating = self.get_average_rating(supplier_id, None).await?;
+            let total_ratings = sqlx::query_scalar!(
+                "SELECT COUNT(*) FROM supplier_ratings WHERE supplier_id = $1",
+                supplier_id
+            )
+            .fetch_one(&self.pool)
+            .await?
+            .unwrap_or(0);
+            
+            let active_compliance_count = sqlx::query_scalar!(
+                "SELECT COUNT(*) FROM supplier_compliance WHERE supplier_id = $1 AND status = 'active'",
+                supplier_id
+            )
+            .fetch_one(&self.pool)
+            .await?
+            .unwrap_or(0);
+            
+            let total_products = sqlx::query_scalar!(
+                "SELECT COUNT(*) FROM supplier_products WHERE supplier_id = $1",
+                supplier_id
+            )
+            .fetch_one(&self.pool)
+            .await?
+            .unwrap_or(0);
+
+            Ok(Some(SupplierSummary {
+                supplier_id: s.supplier_id,
+                name: s.name,
+                tier: s.tier,
+                verification_status: s.verification_status,
+                overall_rating,
+                total_ratings,
+                risk_level: s.risk_level,
+                active_compliance_count,
+                total_products,
+            }))
+        } else {
+            Ok(None)
+        }
+    }
+
+    // Audit Trail
+    pub async fn create_audit_entry(
+        &self,
+        supplier_id: &str,
+        action_type: String,
+        previous_value: Option<serde_json::Value>,
+        new_value: Option<serde_json::Value>,
+        performed_by: String,
+        reason: Option<String>,
+        ip_address: Option<String>,
+    ) -> Result<SupplierAuditTrail, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierAuditTrail,
+            r#"
+            INSERT INTO supplier_audit_trail (
+                supplier_id, action_type, previous_value, new_value,
+                performed_by, reason, ip_address
+            ) VALUES ($1, $2, $3, $4, $5, $6, $7)
+            RETURNING *
+            "#,
+            supplier_id,
+            action_type,
+            previous_value,
+            new_value,
+            performed_by,
+            reason,
+            ip_address
+        )
+        .fetch_one(&self.pool)
+        .await
+    }
+
+    pub async fn get_audit_trail(&self, supplier_id: &str, limit: i64) -> Result<Vec<SupplierAuditTrail>, sqlx::Error> {
+        sqlx::query_as!(
+            SupplierAuditTrail,
+            "SELECT * FROM supplier_audit_trail WHERE supplier_id = $1 ORDER BY performed_at DESC LIMIT $2",
+            supplier_id,
+            limit
+        )
+        .fetch_all(&self.pool)
+        .await
+    }
+}
diff --git a/backend/src/utils.rs b/backend/src/utils.rs
new file mode 100644
index 00000000..5397ee8f
--- /dev/null
+++ b/backend/src/utils.rs
@@ -0,0 +1,187 @@
+use std::time::Duration;
+use sqlx::PgPool;
+use chrono::{DateTime, Utc};
+use crate::services::{SyncService, ProductService, EventService, ApiKeyService};
+
+pub mod aggregation;
+pub mod crypto;
+
+pub struct BackupService {
+    pool: PgPool,
+}
+
+impl BackupService {
+    pub fn new(pool: PgPool) -> Self {
+        Self { pool }
+    }
+
+    pub async fn create_backup(&self) -> Result<String, sqlx::Error> {
+        let timestamp = Utc::now().format("%Y%m%d_%H%M%S");
+        let backup_filename = format!("chainlogistics_backup_{}.sql", timestamp);
+        
+        // This would typically call pg_dump or use PostgreSQL's backup APIs
+        // For now, we'll create a logical backup by exporting key tables
+        let backup_path = format!("/backups/{}", backup_filename);
+        
+        // Create backup directory if it doesn't exist
+        tokio::fs::create_dir_all("/backups").await
+            .map_err(|e| sqlx::Error::Io(e.into()))?;
+
+        // Export products
+        let products = sqlx::query!("SELECT * FROM products")
+            .fetch_all(&self.pool)
+            .await?;
+
+        // Export events
+        let events = sqlx::query!("SELECT * FROM tracking_events")
+            .fetch_all(&self.pool)
+            .await?;
+
+        // Write backup file (simplified - in production use pg_dump)
+        let backup_content = format!(
+            "-- ChainLogistics Backup - {}\n\n-- Products\n{:?}\n\n-- Events\n{:?}\n",
+            timestamp, products, events
+        );
+
+        tokio::fs::write(&backup_path, backup_content).await
+            .map_err(|e| sqlx::Error::Io(e.into()))?;
+
+        tracing::info!("Backup created: {}", backup_path);
+        Ok(backup_path)
+    }
+
+    pub async fn restore_backup(&self, backup_path: &str) -> Result<(), sqlx::Error> {
+        // In production, this would use psql or pg_restore
+        tracing::warn!("Restore functionality not implemented for path: {}", backup_path);
+        Ok(())
+    }
+
+    pub async fn cleanup_old_backups(&self, retain_days: i64) -> Result<Vec<String>, sqlx::Error> {
+        let mut dir = tokio::fs::read_dir("/backups").await
+            .map_err(|e| sqlx::Error::Io(e.into()))?;
+
+        let cutoff_time = Utc::now() - chrono::Duration::days(retain_days);
+        let mut removed_files = Vec::new();
+
+        while let Some(entry) = dir.next_entry().await
+            .map_err(|e| sqlx::Error::Io(e.into))? {
+            
+            let path = entry.path();
+            if path.extension().and_then(|s| s.to_str()) == Some("sql") {
+                if let Ok(metadata) = entry.metadata().await {
+                    if let Ok(modified) = metadata.modified() {
+                        let modified_time: DateTime<Utc> = modified.into();
+                        if modified_time < cutoff_time {
+                            if tokio::fs::remove_file(&path).await.is_ok() {
+                                removed_files.push(path.to_string_lossy().to_string());
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        tracing::info!("Cleaned up {} old backup files", removed_files.len());
+        Ok(removed_files)
+    }
+}
+
+// Cron service for scheduled tasks
+pub struct CronService {
+    pool: PgPool,
+    redis_client: redis::Client,
+    backup_service: BackupService,
+    sync_service: SyncService,
+}
+
+impl CronService {
+    pub fn new(pool: PgPool, redis_client: redis::Client) -> Self {
+        Self {
+            pool: pool.clone(),
+            redis_client: redis_client.clone(),
+            backup_service: BackupService::new(pool.clone()),
+            sync_service: SyncService::new(pool, redis_client),
+        }
+    }
+
+    pub async fn start_scheduler(&self) {
+        let pool = self.pool.clone();
+        let backup_service = self.backup_service.clone();
+        
+        // Daily backup at 2 AM UTC
+        tokio::spawn(async move {
+            let mut interval = tokio::time::interval(Duration::from_secs(86400)); // 24 hours
+            
+            loop {
+                interval.tick().await;
+                
+                // Check if it's 2 AM UTC (simplified - in production use a proper cron library)
+                let now = Utc::now();
+                if now.hour() == 2 && now.minute() == 0 {
+                    if let Err(e) = backup_service.create_backup().await {
+                        tracing::error!("Failed to create backup: {}", e);
+                    }
+                    
+                    // Clean up backups older than 30 days
+                    if let Err(e) = backup_service.cleanup_old_backups(30).await {
+                        tracing::error!("Failed to cleanup old backups: {}", e);
+                    }
+                }
+            }
+        });
+
+        // Sync with smart contracts every 5 minutes
+        let sync_service = self.sync_service.clone();
+        tokio::spawn(async move {
+            let mut interval = tokio::time::interval(Duration::from_secs(300)); // 5 minutes
+            
+            loop {
+                interval.tick().await;
+                
+                // In a real implementation, this would:
+                // 1. Query the smart contract for new products/events
+                // 2. Sync them to the database
+                tracing::debug!("Running scheduled sync with smart contracts");
+                
+                // Placeholder for sync logic
+                // sync_service.sync_from_contract().await;
+            }
+        });
+
+        // Disable API keys inactive for 90+ days — runs once per day
+        let api_key_service = ApiKeyService::new(pool.clone());
+        tokio::spawn(async move {
+            let mut interval = tokio::time::interval(Duration::from_secs(86400));
+            loop {
+                interval.tick().await;
+                match api_key_service.disable_inactive_keys(90).await {
+                    Ok(n) if n > 0 => tracing::info!("Disabled {} inactive API keys", n),
+                    Ok(_) => {}
+                    Err(e) => tracing::error!("Failed to disable inactive API keys: {}", e),
+                }
+            }
+        });
+
+        tracing::info!("Cron scheduler started");
+    }
+}
+
+// Clone implementations for async tasks
+impl Clone for BackupService {
+    fn clone(&self) -> Self {
+        Self {
+            pool: self.pool.clone(),
+        }
+    }
+}
+
+impl Clone for SyncService {
+    fn clone(&self) -> Self {
+        Self {
+            pool: self.pool.clone(),
+            redis_client: self.redis_client.clone(),
+            product_service: ProductService::new(self.pool.clone(), self.redis_client.clone()),
+            event_service: EventService::new(self.pool.clone(), self.redis_client.clone()),
+        }
+    }
+}
\ No newline at end of file
diff --git a/backend/src/utils/aggregation.rs b/backend/src/utils/aggregation.rs
new file mode 100644
index 00000000..70dbbedd
--- /dev/null
+++ b/backend/src/utils/aggregation.rs
@@ -0,0 +1,86 @@
+use crate::models::analytics::{EventTypeCount, TimeSeriesPoint, HourlyCount};
+use chrono::{DateTime, Utc, Datelike};
+use std::collections::HashMap;
+
+/// Compute percentage breakdown for a list of (label, count) pairs.
+pub fn compute_percentages(counts: Vec<(String, i64)>) -> Vec<EventTypeCount> {
+    let total: i64 = counts.iter().map(|(_, c)| c).sum();
+    counts
+        .into_iter()
+        .map(|(event_type, count)| EventTypeCount {
+            percentage: if total > 0 {
+                (count as f64 / total as f64) * 100.0
+            } else {
+                0.0
+            },
+            event_type,
+            count,
+        })
+        .collect()
+}
+
+/// Fill gaps in a daily time series so every date in [start, end] has an entry.
+pub fn fill_time_series_gaps(
+    data: Vec<TimeSeriesPoint>,
+    start: DateTime<Utc>,
+    end: DateTime<Utc>,
+) -> Vec<TimeSeriesPoint> {
+    let map: HashMap<String, i64> = data.into_iter().map(|p| (p.date, p.count)).collect();
+
+    let mut result = Vec::new();
+    let mut current = start.date_naive();
+    let end_date = end.date_naive();
+
+    while current <= end_date {
+        let key = current.format("%Y-%m-%d").to_string();
+        result.push(TimeSeriesPoint {
+            count: *map.get(&key).unwrap_or(&0),
+            date: key,
+        });
+        current = current.succ_opt().unwrap_or(end_date);
+    }
+
+    result
+}
+
+/// Build a 24-slot hourly distribution from a list of (hour, count) rows.
+pub fn build_hourly_distribution(rows: Vec<(i32, i64)>) -> Vec<HourlyCount> {
+    let map: HashMap<i32, i64> = rows.into_iter().collect();
+    (0..24)
+        .map(|hour| HourlyCount {
+            count: *map.get(&hour).unwrap_or(&0),
+            hour,
+        })
+        .collect()
+}
+
+/// Calculate average, rounding to 2 decimal places.
+pub fn safe_average(total: i64, count: i64) -> f64 {
+    if count == 0 {
+        return 0.0;
+    }
+    let avg = total as f64 / count as f64;
+    (avg * 100.0).round() / 100.0
+}
+
+/// Serialize a Vec of rows to CSV string.
+/// `headers` is the header row; `rows` is an iterator of comma-separated value strings.
+pub fn to_csv(headers: &[&str], rows: Vec<Vec<String>>) -> String {
+    let mut out = String::new();
+    out.push_str(&headers.join(","));
+    out.push('\n');
+    for row in rows {
+        out.push_str(&row.join(","));
+        out.push('\n');
+    }
+    out
+}
+
+/// Escape a CSV field value (wrap in quotes if it contains commas or quotes).
+pub fn csv_escape(value: &str) -> String {
+    if value.contains(',') || value.contains('"') || value.contains('\n') {
+        format!("\"{}\"", value.replace('"', "\"\""))
+    } else {
+        value.to_string()
+    }
+}
diff --git a/backend/src/utils/crypto.rs b/backend/src/utils/crypto.rs
new file mode 100644
index 00000000..748fa16d
--- /dev/null
+++ b/backend/src/utils/crypto.rs
@@ -0,0 +1,35 @@
+use aes_gcm::{
+    aead::{Aead, KeyInit},
+    Aes256Gcm, Nonce, Key
+};
+use base64::{engine::general_purpose, Engine as _};
+use crate::error::AppError;
+
+pub fn encrypt(data: &str, key_str: &str) -> Result<String, AppError> {
+    let key = Key::<Aes256Gcm>::from_slice(key_str.as_bytes());
+    let cipher = Aes256Gcm::new(key);
+    let nonce = Nonce::from_slice(b"unique nonce 12"); // In production, use a random nonce and prepend it to the ciphertext
+
+    let ciphertext = cipher
+        .encrypt(nonce, data.as_bytes())
+        .map_err(|e| AppError::Internal(format!("Encryption error: {}", e)))?;
+
+    Ok(general_purpose::STANDARD.encode(ciphertext))
+}
+
+pub fn decrypt(encrypted_data: &str, key_str: &str) -> Result<String, AppError> {
+    let key = Key::<Aes256Gcm>::from_slice(key_str.as_bytes());
+    let cipher = Aes256Gcm::new(key);
+    let nonce = Nonce::from_slice(b"unique nonce 12"); // Must match the nonce used for encryption
+
+    let ciphertext = general_purpose::STANDARD
+        .decode(encrypted_data)
+        .map_err(|e| AppError::Internal(format!("Base64 decode error: {}", e)))?;
+
+    let plaintext = cipher
+        .decrypt(nonce, ciphertext.as_slice())
+        .map_err(|e| AppError::Internal(format!("Decryption error: {}", e)))?;
+
+    String::from_utf8(plaintext)
+        .map_err(|e| AppError::Internal(format!("UTF-8 decode error: {}", e)))
+}
diff --git a/backend/src/validation.rs b/backend/src/validation.rs
new file mode 100644
index 00000000..38ab0698
--- /dev/null
+++ b/backend/src/validation.rs
@@ -0,0 +1,145 @@
+use crate::error::AppError;
+use regex::Regex;
+use lazy_static::lazy_static;
+
+lazy_static! {
+    static ref SQL_INJECTION_REGEX: Regex = Regex::new(r"(?i)(SELECT|INSERT|UPDATE|DELETE|DROP|UNION|ALTER|EXEC|EXECUTE|TRUNCATE|--|\*)").unwrap();
+    static ref XSS_REGEX: Regex = Regex::new(r"(?i)<script.*?>.*?</script>|on\w+?\s*=").unwrap();
+    static ref PRODUCT_ID_REGEX: Regex = Regex::new(r"^[a-zA-Z0-9-_]+$").unwrap();
+    static ref LOCATION_REGEX: Regex = Regex::new(r"^[\w\s,.\-']+$").unwrap();
+}
+
+const STELLAR_ADDRESS_LEN: usize = 56;
+
+/// Validates a Stellar public key (G... address, 56 chars, base32).
+pub fn validate_stellar_address(address: &str) -> Result<(), AppError> {
+    if address.len() != STELLAR_ADDRESS_LEN
+        || !address.starts_with('G')
+        || !address.chars().all(|c| c.is_ascii_alphanumeric())
+    {
+        return Err(AppError::Validation(format!(
+            "Invalid Stellar address: '{}'",
+            address
+        )));
+    }
+    Ok(())
+}
+
+/// Validates a non-empty string within a max length.
+pub fn validate_string(field: &str, value: &str, max_len: usize) -> Result<(), AppError> {
+    if value.trim().is_empty() {
+        return Err(AppError::Validation(format!("{} must not be empty", field)));
+    }
+    if value.len() > max_len {
+        return Err(AppError::Validation(format!(
+            "{} must not exceed {} characters",
+            field, max_len
+        )));
+    }
+    
+    // Check for suspicious SQL injection patterns
+    if SQL_INJECTION_REGEX.is_match(value) {
+        tracing::warn!("Suspicious SQL injection pattern detected in field {}: {}", field, value);
+        return Err(AppError::Validation(format!(
+            "Input contains suspicious characters or patterns in field {}",
+            field
+        )));
+    }
+    
+    Ok(())
+}
+
+/// Robustly sanitizes user input to prevent XSS and other injection attacks.
+pub fn sanitize_input(input: &str) -> String {
+    let mut sanitized = input.to_string();
+    
+    // Remove scripts and event handlers
+    sanitized = XSS_REGEX.replace_all(&sanitized, "").to_string();
+    
+    // Remove HTML tags
+    let mut result = String::with_capacity(sanitized.len());
+    let mut in_tag = false;
+    for ch in sanitized.chars() {
+        match ch {
+            '<' => in_tag = true,
+            '>' => in_tag = false,
+            _ if !in_tag => result.push(ch),
+            _ => {}
+        }
+    }
+    
+    // Trim and return
+    result.trim().to_string()
+}
+
+/// Validates that an amount string is a positive decimal number.
+pub fn validate_amount(amount: &str) -> Result<(), AppError> {
+    let parsed: f64 = amount
+        .parse()
+        .map_err(|_| AppError::Validation("Amount must be a valid number".to_string()))?;
+    if parsed <= 0.0 {
+        return Err(AppError::Validation(
+            "Amount must be greater than zero".to_string(),
+        ));
+    }
+    Ok(())
+}
+
+/// Validates an email address format.
+pub fn validate_email(email: &str) -> Result<(), AppError> {
+    let email_regex = Regex::new(r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$").unwrap();
+    if !email_regex.is_match(email) {
+        return Err(AppError::Validation("Invalid email format".to_string()));
+    }
+    Ok(())
+}
+
+/// Validates a generic UUID string.
+pub fn validate_uuid(uuid: &str) -> Result<(), AppError> {
+    if uuid::Uuid::parse_str(uuid).is_err() {
+        return Err(AppError::Validation("Invalid UUID format".to_string()));
+    }
+    Ok(())
+}
+
+/// Validates a Product ID.
+pub fn validate_product_id(id: &str) -> Result<(), AppError> {
+    if id.is_empty() || id.len() > 64 {
+        return Err(AppError::Validation("Product ID must be between 1 and 64 characters".to_string()));
+    }
+    if !PRODUCT_ID_REGEX.is_match(id) {
+        return Err(AppError::Validation("Product ID contains invalid characters".to_string()));
+    }
+    Ok(())
+}
+
+/// Validates a location string.
+pub fn validate_location(location: &str) -> Result<(), AppError> {
+    if location.is_empty() || location.len() > 256 {
+        return Err(AppError::Validation("Location must be between 1 and 256 characters".to_string()));
+    }
+    if !LOCATION_REGEX.is_match(location) {
+        return Err(AppError::Validation("Location contains invalid characters".to_string()));
+    }
+    Ok(())
+}
+
+/// Recursively sanitizes JSON metadata by sanitizing all string values.
+pub fn sanitize_json_metadata(value: &mut serde_json::Value) {
+    match value {
+        serde_json::Value::String(s) => {
+            *s = sanitize_input(s);
+        }
+        serde_json::Value::Array(arr) => {
+            for item in arr.iter_mut() {
+                sanitize_json_metadata(item);
+            }
+        }
+        serde_json::Value::Object(obj) => {
+            for (_, val) in obj.iter_mut() {
+                sanitize_json_metadata(val);
+            }
+        }
+        _ => {}
+    }
+}
diff --git a/backend/src/websocket/handler.rs b/backend/src/websocket/handler.rs
new file mode 100644
index 00000000..d53c9de8
--- /dev/null
+++ b/backend/src/websocket/handler.rs
@@ -0,0 +1,63 @@
+use crate::websocket::{ConnectionManager, WebSocketMessage, MessageType};
+use tokio::sync::mpsc;
+use futures::{SinkExt, StreamExt};
+use warp::ws::{WebSocket, Message};
+
+pub struct WebSocketHandler {
+    manager: ConnectionManager,
+}
+
+impl WebSocketHandler {
+    pub fn new(manager: ConnectionManager) -> Self {
+        WebSocketHandler { manager }
+    }
+
+    pub async fn handle_connection(&self, ws: WebSocket) {
+        let (mut user_ws_tx, mut user_ws_rx) = ws.split();
+        let (tx, mut rx) = mpsc::unbounded_channel();
+
+        let connection_id = self.manager.add_connection(tx).await;
+        let manager = self.manager.clone();
+        let conn_id = connection_id.clone();
+
+        // Spawn task to handle incoming messages
+        tokio::spawn(async move {
+            while let Some(result) = user_ws_rx.next().await {
+                match result {
+                    Ok(msg) => {
+                        if let Ok(text) = msg.to_str() {
+                            if let Ok(ws_msg) = serde_json::from_str::<WebSocketMessage>(text) {
+                                match ws_msg.message_type {
+                                    MessageType::Subscribe { channel } => {
+                                        let _ = manager.subscribe(&conn_id, &channel).await;
+                                    }
+                                    MessageType::Unsubscribe { channel } => {
+                                        let _ = manager.unsubscribe(&conn_id, &channel).await;
+                                    }
+                                    MessageType::Ping => {
+                                        let pong = WebSocketMessage::pong();
+                                        let _ = manager
+                                            .send_to_connection(&conn_id, serde_json::to_string(&pong).unwrap())
+                                            .await;
+                                    }
+                                    _ => {}
+                                }
+                            }
+                        }
+                    }
+                    Err(_) => break,
+                }
+            }
+            manager.remove_connection(&conn_id).await;
+        });
+
+        // Spawn task to handle outgoing messages
+        tokio::spawn(async move {
+            while let Some(msg) = rx.recv().await {
+                if user_ws_tx.send(Message::text(msg)).await.is_err() {
+                    break;
+                }
+            }
+        });
+    }
+}
diff --git a/backend/src/websocket/manager.rs b/backend/src/websocket/manager.rs
new file mode 100644
index 00000000..ea1828f5
--- /dev/null
+++ b/backend/src/websocket/manager.rs
@@ -0,0 +1,119 @@
+use std::collections::{HashMap, HashSet};
+use std::sync::Arc;
+use tokio::sync::{RwLock, mpsc};
+use uuid::Uuid;
+
+pub type ConnectionId = String;
+pub type Channel = String;
+pub type Sender = mpsc::UnboundedSender<String>;
+
+#[derive(Clone)]
+pub struct ConnectionManager {
+    connections: Arc<RwLock<HashMap<ConnectionId, Connection>>>,
+    channels: Arc<RwLock<HashMap<Channel, HashSet<ConnectionId>>>>,
+}
+
+#[derive(Clone)]
+struct Connection {
+    id: ConnectionId,
+    sender: Sender,
+    subscribed_channels: HashSet<Channel>,
+}
+
+impl ConnectionManager {
+    pub fn new() -> Self {
+        ConnectionManager {
+            connections: Arc::new(RwLock::new(HashMap::new())),
+            channels: Arc::new(RwLock::new(HashMap::new())),
+        }
+    }
+
+    pub async fn add_connection(&self, sender: Sender) -> ConnectionId {
+        let id = Uuid::new_v4().to_string();
+        let connection = Connection {
+            id: id.clone(),
+            sender,
+            subscribed_channels: HashSet::new(),
+        };
+
+        let mut connections = self.connections.write().await;
+        connections.insert(id.clone(), connection);
+        id
+    }
+
+    pub async fn remove_connection(&self, connection_id: &ConnectionId) {
+        let mut connections = self.connections.write().await;
+        if let Some(conn) = connections.remove(connection_id) {
+            let mut channels = self.channels.write().await;
+            for channel in conn.subscribed_channels {
+                if let Some(subs) = channels.get_mut(&channel) {
+                    subs.remove(connection_id);
+                }
+            }
+        }
+    }
+
+    pub async fn subscribe(&self, connection_id: &ConnectionId, channel: &Channel) -> Result<(), String> {
+        let mut connections = self.connections.write().await;
+        if let Some(conn) = connections.get_mut(connection_id) {
+            conn.subscribed_channels.insert(channel.clone());
+        } else {
+            return Err("Connection not found".to_string());
+        }
+
+        let mut channels = self.channels.write().await;
+        channels
+            .entry(channel.clone())
+            .or_insert_with(HashSet::new)
+            .insert(connection_id.clone());
+
+        Ok(())
+    }
+
+    pub async fn unsubscribe(&self, connection_id: &ConnectionId, channel: &Channel) -> Result<(), String> {
+        let mut connections = self.connections.write().await;
+        if let Some(conn) = connections.get_mut(connection_id) {
+            conn.subscribed_channels.remove(channel);
+        }
+
+        let mut channels = self.channels.write().await;
+        if let Some(subs) = channels.get_mut(channel) {
+            subs.remove(connection_id);
+        }
+
+        Ok(())
+    }
+
+    pub async fn broadcast(&self, channel: &Channel, message: String) {
+        let channels = self.channels.read().await;
+        if let Some(subscribers) = channels.get(channel) {
+            let connections = self.connections.read().await;
+            for connection_id in subscribers {
+                if let Some(conn) = connections.get(connection_id) {
+                    let _ = conn.sender.send(message.clone());
+                }
+            }
+        }
+    }
+
+    pub async fn send_to_connection(&self, connection_id: &ConnectionId, message: String) -> Result<(), String> {
+        let connections = self.connections.read().await;
+        if let Some(conn) = connections.get(connection_id) {
+            conn.sender.send(message).map_err(|e| e.to_string())?;
+            Ok(())
+        } else {
+            Err("Connection not found".to_string())
+        }
+    }
+
+    pub async fn get_channel_subscribers(&self, channel: &Channel) -> usize {
+        let channels = self.channels.read().await;
+        channels.get(channel).map(|s| s.len()).unwrap_or(0)
+    }
+}
+
+impl Default for ConnectionManager {
+    fn default() -> Self {
+        Self::new()
+    }
+}
diff --git a/backend/src/websocket/message.rs b/backend/src/websocket/message.rs
new file mode 100644
index 00000000..0c3c0aea
--- /dev/null
+++ b/backend/src/websocket/message.rs
@@ -0,0 +1,60 @@
+use serde::{Deserialize, Serialize};
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(tag = "type")]
+pub enum MessageType {
+    #[serde(rename = "subscribe")]
+    Subscribe { channel: String },
+    #[serde(rename = "unsubscribe")]
+    Unsubscribe { channel: String },
+    #[serde(rename = "event")]
+    Event { channel: String, data: serde_json::Value },
+    #[serde(rename = "ping")]
+    Ping,
+    #[serde(rename = "pong")]
+    Pong,
+    #[serde(rename = "error")]
+    Error { message: String },
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct WebSocketMessage {
+    pub id: String,
+    pub timestamp: i64,
+    #[serde(flatten)]
+    pub message_type: MessageType,
+}
+
+impl WebSocketMessage {
+    pub fn new(message_type: MessageType) -> Self {
+        WebSocketMessage {
+            id: uuid::Uuid::new_v4().to_string(),
+            timestamp: chrono::Utc::now().timestamp_millis(),
+            message_type,
+        }
+    }
+
+    pub fn subscribe(channel: String) -> Self {
+        Self::new(MessageType::Subscribe { channel })
+    }
+
+    pub fn unsubscribe(channel: String) -> Self {
+        Self::new(MessageType::Unsubscribe { channel })
+    }
+
+    pub fn event(channel: String, data: serde_json::Value) -> Self {
+        Self::new(MessageType::Event { channel, data })
+    }
+
+    pub fn ping() -> Self {
+        Self::new(MessageType::Ping)
+    }
+
+    pub fn pong() -> Self {
+        Self::new(MessageType::Pong)
+    }
+
+    pub fn error(message: String) -> Self {
+        Self::new(MessageType::Error { message })
+    }
+}
diff --git a/backend/src/websocket/mod.rs b/backend/src/websocket/mod.rs
new file mode 100644
index 00000000..750cf650
--- /dev/null
+++ b/backend/src/websocket/mod.rs
@@ -0,0 +1,7 @@
+pub mod handler;
+pub mod message;
+pub mod manager;
+
+pub use handler::WebSocketHandler;
+pub use message::{WebSocketMessage, MessageType};
+pub use manager::ConnectionManager;
diff --git a/backend/tests/api_integration_tests.rs b/backend/tests/api_integration_tests.rs
new file mode 100644
index 00000000..4c56b7cd
--- /dev/null
+++ b/backend/tests/api_integration_tests.rs
@@ -0,0 +1,503 @@
+use axum::body::Body;
+use axum::http::{Request, StatusCode};
+use tower::ServiceExt;
+
+use chainlojistic_backend::{AppState, routes};
+
+// Test helper to create a test app
+async fn create_test_app() -> axum::Router {
+    // Note: In real tests, you'd use a test database
+    // This is a simplified version for demonstration
+    let app_state = AppState::new().await.expect("Failed to create app state");
+    
+    axum::Router::new()
+        .merge(routes::health_routes())
+        .merge(routes::api_routes())
+        .with_state(app_state)
+}
+
+#[tokio::test]
+async fn test_health_endpoint() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/health")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    assert_eq!(response.status(), StatusCode::OK);
+}
+
+#[tokio::test]
+async fn test_health_db_endpoint() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/health/db")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    assert_eq!(response.status(), StatusCode::OK);
+}
+
+#[tokio::test]
+async fn test_list_products_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/products")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_get_product_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/products/test-product-id")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_list_events_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/events")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_create_product_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/products")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "id": "test-product",
+                "name": "Test Product",
+                "description": "A test product",
+                "origin_location": "Test Location",
+                "category": "Test Category",
+                "tags": [],
+                "certifications": [],
+                "media_hashes": [],
+                "custom_fields": {}
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_update_product_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("PUT")
+            .uri("/api/v1/admin/products/test-product")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{"name": "Updated Name"}"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_delete_product_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("DELETE")
+            .uri("/api/v1/admin/products/test-product")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_create_event_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/events")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "product_id": "test-product",
+                "actor_address": "GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7",
+                "timestamp": "2024-01-01T00:00:00Z",
+                "event_type": "TEST",
+                "location": "Test Location",
+                "data_hash": "test-hash",
+                "note": "Test note",
+                "metadata": {}
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_get_stats_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/stats")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_compliance_check_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/compliance/check")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "product_id": "test-product",
+                "check_type": "full"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_get_compliance_report_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/compliance/report/test-product")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_generate_audit_report_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/audit/report")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_list_transactions_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/transactions")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_get_transaction_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/transactions/test-transaction-id")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require API key authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_create_transaction_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/transactions")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "product_id": "test-product",
+                "amount": 100.00,
+                "currency": "USD",
+                "transaction_type": "payment"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_create_invoice_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/invoices")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "product_id": "test-product",
+                "amount": 100.00,
+                "currency": "USD"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_request_financing_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/financing/request")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "product_id": "test-product",
+                "amount": 1000.00,
+                "reason": "expansion"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_auth_login() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/auth/login")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "email": "test@example.com",
+                "password": "password123"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Will return error since user doesn't exist, but endpoint should be accessible
+    assert!(response.status() == StatusCode::UNAUTHORIZED || response.status() == StatusCode::OK);
+}
+
+#[tokio::test]
+async fn test_auth_register() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/auth/register")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "email": "newuser@example.com",
+                "password": "password123",
+                "stellar_address": "GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Endpoint should be accessible
+    assert!(response.status() == StatusCode::CREATED || response.status() == StatusCode::OK || response.status() == StatusCode::BAD_REQUEST);
+}
+
+#[tokio::test]
+async fn test_create_user_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/users")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"{
+                "email": "user@example.com",
+                "password_hash": "hashedpassword",
+                "stellar_address": "GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7"
+            }"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_get_current_user_unauthorized() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/admin/users/me")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should require admin authentication
+    assert_eq!(response.status(), StatusCode::UNAUTHORIZED);
+}
+
+// Edge case tests
+#[tokio::test]
+async fn test_invalid_json_body() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/products")
+            .header("content-type", "application/json")
+            .body(Body::from(r#"invalid json"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should return bad request for invalid JSON
+    assert!(response.status() == StatusCode::BAD_REQUEST || response.status() == StatusCode::UNAUTHORIZED);
+}
+
+#[tokio::test]
+async fn test_missing_content_type() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("POST")
+            .uri("/api/v1/admin/products")
+            .body(Body::from(r#"{}"#))
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should handle missing content type
+    assert!(response.status() == StatusCode::BAD_REQUEST || response.status() == StatusCode::UNAUTHORIZED || response.status() == StatusCode::UNSUPPORTED_MEDIA_TYPE);
+}
+
+#[tokio::test]
+async fn test_not_found_endpoint() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/v1/nonexistent-endpoint")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should return not found
+    assert_eq!(response.status(), StatusCode::NOT_FOUND);
+}
+
+#[tokio::test]
+async fn test_method_not_allowed() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .method("DELETE")
+            .uri("/health")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    // Should return method not allowed
+    assert_eq!(response.status(), StatusCode::METHOD_NOT_ALLOWED);
+}
diff --git a/backend/tests/integration_tests.rs b/backend/tests/integration_tests.rs
new file mode 100644
index 00000000..186d78fc
--- /dev/null
+++ b/backend/tests/integration_tests.rs
@@ -0,0 +1,137 @@
+use chainlojistic_backend::{config::Config, database::Database, services::ProductService, models::NewProduct};
+use sqlx::PgPool;
+use uuid::Uuid;
+
+#[tokio::test]
+async fn test_database_connection_and_migrations() {
+    // Use test database
+    let mut config = Config::default();
+    config.database.url = "postgres://chainlogistics:password@localhost/chainlogistics_test".to_string();
+    
+    // Create database connection
+    let db = Database::new(&config.database).await.expect("Failed to connect to database");
+    
+    // Run migrations
+    db.migrate().await.expect("Failed to run migrations");
+    
+    // Test health check
+    db.health_check().await.expect("Database health check failed");
+    
+    // Test basic service operations
+    let product_service = ProductService::new(db.pool().clone());
+    
+    let new_product = NewProduct {
+        id: "TEST-001".to_string(),
+        name: "Test Product".to_string(),
+        description: "A test product".to_string(),
+        origin_location: "Test Location".to_string(),
+        category: "Test Category".to_string(),
+        tags: vec!["test".to_string()],
+        certifications: vec![],
+        media_hashes: vec![],
+        custom_fields: serde_json::json!({}),
+        owner_address: "GTEST123456789".to_string(),
+        created_by: "test-user".to_string(),
+    };
+    
+    // Create product
+    let created = product_service.create_product(new_product).await.expect("Failed to create product");
+    assert_eq!(created.id, "TEST-001");
+    assert_eq!(created.name, "Test Product");
+    
+    // Get product
+    let retrieved = product_service.get_product("TEST-001").await.expect("Failed to get product");
+    assert!(retrieved.is_some());
+    assert_eq!(retrieved.unwrap().name, "Test Product");
+    
+    // Update product
+    let mut updated = created.clone();
+    updated.name = "Updated Test Product".to_string();
+    updated.updated_by = "test-user".to_string();
+    
+    let updated_result = product_service.update_product("TEST-001", updated).await.expect("Failed to update product");
+    assert_eq!(updated_result.name, "Updated Test Product");
+    
+    // Delete product
+    product_service.delete_product("TEST-001").await.expect("Failed to delete product");
+    
+    // Verify deletion
+    let deleted = product_service.get_product("TEST-001").await.expect("Failed to check deletion");
+    assert!(deleted.is_none());
+}
+
+#[tokio::test]
+async fn test_product_service_filters() {
+    let mut config = Config::default();
+    config.database.url = "postgres://chainlogistics:password@localhost/chainlogistics_test".to_string();
+    
+    let db = Database::new(&config.database).await.expect("Failed to connect to database");
+    db.migrate().await.expect("Failed to run migrations");
+    
+    let product_service = ProductService::new(db.pool().clone());
+    
+    // Create test products
+    let product1 = NewProduct {
+        id: "FILTER-001".to_string(),
+        name: "Product 1".to_string(),
+        description: "Test product 1".to_string(),
+        origin_location: "Location A".to_string(),
+        category: "Electronics".to_string(),
+        tags: vec!["test".to_string(), "electronics".to_string()],
+        certifications: vec![],
+        media_hashes: vec![],
+        custom_fields: serde_json::json!({}),
+        owner_address: "GOWNER1".to_string(),
+        created_by: "test-user".to_string(),
+    };
+    
+    let product2 = NewProduct {
+        id: "FILTER-002".to_string(),
+        name: "Product 2".to_string(),
+        description: "Test product 2".to_string(),
+        origin_location: "Location B".to_string(),
+        category: "Clothing".to_string(),
+        tags: vec!["test".to_string(), "clothing".to_string()],
+        certifications: vec![],
+        media_hashes: vec![],
+        custom_fields: serde_json::json!({}),
+        owner_address: "GOWNER2".to_string(),
+        created_by: "test-user".to_string(),
+    };
+    
+    product_service.create_product(product1).await.expect("Failed to create product1");
+    product_service.create_product(product2).await.expect("Failed to create product2");
+    
+    // Test filters
+    use chainlojistic_backend::database::ProductFilters;
+    
+    // Filter by owner
+    let filters = ProductFilters {
+        owner_address: Some("GOWNER1".to_string()),
+        category: None,
+        is_active: None,
+        created_after: None,
+        created_before: None,
+    };
+    
+    let results = product_service.list_products(0, 10, Some(filters)).await.expect("Failed to filter by owner");
+    assert_eq!(results.len(), 1);
+    assert_eq!(results[0].owner_address, "GOWNER1");
+    
+    // Filter by category
+    let filters = ProductFilters {
+        owner_address: None,
+        category: Some("Electronics".to_string()),
+        is_active: None,
+        created_after: None,
+        created_before: None,
+    };
+    
+    let results = product_service.list_products(0, 10, Some(filters)).await.expect("Failed to filter by category");
+    assert_eq!(results.len(), 1);
+    assert_eq!(results[0].category, "Electronics");
+    
+    // Cleanup
+    product_service.delete_product("FILTER-001").await.unwrap();
+    product_service.delete_product("FILTER-002").await.unwrap();
+}
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 00000000..82fb1ba1
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,337 @@
+version: '3.8'
+
+services:
+  # PostgreSQL Database (Primary)
+  postgres:
+    image: postgres:15-alpine
+    container_name: chainlogistics-postgres-primary
+    environment:
+      POSTGRES_DB: chainlogistics
+      POSTGRES_USER: chainlogistics
+      POSTGRES_PASSWORD: password
+      POSTGRES_REPLICATION_USER: replicator
+      POSTGRES_REPLICATION_PASSWORD: replication_password
+    ports:
+      - "5432:5432"
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./backend/migrations:/docker-entrypoint-initdb.d
+      - ./docker/postgres/primary.conf:/etc/postgresql/postgresql.conf
+    networks:
+      - chainlogistics-network
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U chainlogistics -d chainlogistics"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    command: >
+      postgres
+      -c config_file=/etc/postgresql/postgresql.conf
+      -c max_connections=200
+      -c shared_buffers=256MB
+      -c effective_cache_size=1GB
+      -c maintenance_work_mem=64MB
+      -c checkpoint_completion_target=0.9
+      -c wal_buffers=16MB
+      -c default_statistics_target=100
+      -c random_page_cost=1.1
+      -c effective_io_concurrency=200
+      -c work_mem=1310kB
+      -c min_wal_size=1GB
+      -c max_wal_size=4GB
+
+  # PostgreSQL Read Replica 1
+  postgres-replica-1:
+    image: postgres:15-alpine
+    container_name: chainlogistics-postgres-replica-1
+    environment:
+      POSTGRES_DB: chainlogistics
+      POSTGRES_USER: chainlogistics
+      POSTGRES_PASSWORD: password
+      PGUSER: chainlogistics
+      PGPASSWORD: password
+    ports:
+      - "5433:5432"
+    volumes:
+      - postgres_replica_1_data:/var/lib/postgresql/data
+      - ./docker/postgres/replica.conf:/etc/postgresql/postgresql.conf
+    networks:
+      - chainlogistics-network
+    depends_on:
+      postgres:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U chainlogistics -d chainlogistics"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    command: >
+      postgres
+      -c config_file=/etc/postgresql/postgresql.conf
+      -c hot_standby=on
+
+  # PostgreSQL Read Replica 2
+  postgres-replica-2:
+    image: postgres:15-alpine
+    container_name: chainlogistics-postgres-replica-2
+    environment:
+      POSTGRES_DB: chainlogistics
+      POSTGRES_USER: chainlogistics
+      POSTGRES_PASSWORD: password
+      PGUSER: chainlogistics
+      PGPASSWORD: password
+    ports:
+      - "5434:5432"
+    volumes:
+      - postgres_replica_2_data:/var/lib/postgresql/data
+      - ./docker/postgres/replica.conf:/etc/postgresql/postgresql.conf
+    networks:
+      - chainlogistics-network
+    depends_on:
+      postgres:
+        condition: service_healthy
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U chainlogistics -d chainlogistics"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+    command: >
+      postgres
+      -c config_file=/etc/postgresql/postgresql.conf
+      -c hot_standby=on
+
+  # Redis for caching and rate limiting
+  redis:
+    image: redis:7-alpine
+    container_name: chainlogistics-redis
+    ports:
+      - "6379:6379"
+    volumes:
+      - redis_data:/data
+    networks:
+      - chainlogistics-network
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  # Backend API Service - Instance 1
+  backend-1:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: chainlogistics-backend-1
+    environment:
+      DATABASE_URL: postgres://chainlogistics:password@postgres:5432/chainlogistics
+      DATABASE_READ_REPLICA_URLS: postgres://chainlogistics:password@postgres-replica-1:5432/chainlogistics,postgres://chainlogistics:password@postgres-replica-2:5432/chainlogistics
+      REDIS_URL: redis://redis:6379
+      HOST: 0.0.0.0
+      PORT: 3001
+      RUST_LOG: info
+      LOG_FORMAT: json
+      INSTANCE_ID: backend-1
+    ports:
+      - "3001:3001"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      postgres-replica-1:
+        condition: service_healthy
+      postgres-replica-2:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    networks:
+      - chainlogistics-network
+    volumes:
+      - ./backups:/backups
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3001/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+    deploy:
+      resources:
+        limits:
+          cpus: '1.0'
+          memory: 512M
+        reservations:
+          cpus: '0.5'
+          memory: 256M
+
+  # Backend API Service - Instance 2
+  backend-2:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: chainlogistics-backend-2
+    environment:
+      DATABASE_URL: postgres://chainlogistics:password@postgres:5432/chainlogistics
+      DATABASE_READ_REPLICA_URLS: postgres://chainlogistics:password@postgres-replica-1:5432/chainlogistics,postgres://chainlogistics:password@postgres-replica-2:5432/chainlogistics
+      REDIS_URL: redis://redis:6379
+      HOST: 0.0.0.0
+      PORT: 3001
+      RUST_LOG: info
+      LOG_FORMAT: json
+      INSTANCE_ID: backend-2
+    ports:
+      - "3002:3001"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      postgres-replica-1:
+        condition: service_healthy
+      postgres-replica-2:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    networks:
+      - chainlogistics-network
+    volumes:
+      - ./backups:/backups
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3001/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+    deploy:
+      resources:
+        limits:
+          cpus: '1.0'
+          memory: 512M
+        reservations:
+          cpus: '0.5'
+          memory: 256M
+
+  # Backend API Service - Instance 3
+  backend-3:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    container_name: chainlogistics-backend-3
+    environment:
+      DATABASE_URL: postgres://chainlogistics:password@postgres:5432/chainlogistics
+      DATABASE_READ_REPLICA_URLS: postgres://chainlogistics:password@postgres-replica-1:5432/chainlogistics,postgres://chainlogistics:password@postgres-replica-2:5432/chainlogistics
+      REDIS_URL: redis://redis:6379
+      HOST: 0.0.0.0
+      PORT: 3001
+      RUST_LOG: info
+      LOG_FORMAT: json
+      INSTANCE_ID: backend-3
+    ports:
+      - "3003:3001"
+    depends_on:
+      postgres:
+        condition: service_healthy
+      postgres-replica-1:
+        condition: service_healthy
+      postgres-replica-2:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+    networks:
+      - chainlogistics-network
+    volumes:
+      - ./backups:/backups
+    healthcheck:
+      test: ["CMD", "curl", "-f", "http://localhost:3001/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+    deploy:
+      resources:
+        limits:
+          cpus: '1.0'
+          memory: 512M
+        reservations:
+          cpus: '0.5'
+          memory: 256M
+
+  loki:
+    image: grafana/loki:2.9.8
+    container_name: chainlogistics-loki
+    ports:
+      - "3100:3100"
+    command: -config.file=/etc/loki/local-config.yaml
+    volumes:
+      - ./docker/loki/loki-config.yaml:/etc/loki/local-config.yaml
+      - loki_data:/loki
+    networks:
+      - chainlogistics-network
+
+  promtail:
+    image: grafana/promtail:2.9.8
+    container_name: chainlogistics-promtail
+    command: -config.file=/etc/promtail/config.yml
+    volumes:
+      - ./docker/promtail/promtail-config.yml:/etc/promtail/config.yml
+      - /var/log:/var/log:ro
+      - /var/lib/docker/containers:/var/lib/docker/containers:ro
+    depends_on:
+      - loki
+    networks:
+      - chainlogistics-network
+
+  # Nginx Reverse Proxy
+  nginx:
+    image: nginx:alpine
+    container_name: chainlogistics-nginx
+    ports:
+      - "80:80"
+      - "443:443"
+    volumes:
+      - ./docker/nginx/nginx.conf:/etc/nginx/nginx.conf
+      - ./docker/nginx/ssl:/etc/nginx/ssl
+    depends_on:
+      - backend
+    networks:
+      - chainlogistics-network
+
+  # Prometheus for monitoring
+  prometheus:
+    image: prom/prometheus:latest
+    container_name: chainlogistics-prometheus
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./docker/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+      - prometheus_data:/prometheus
+    networks:
+      - chainlogistics-network
+    command:
+      - '--config.file=/etc/prometheus/prometheus.yml'
+      - '--storage.tsdb.path=/prometheus'
+      - '--web.console.libraries=/etc/prometheus/console_libraries'
+      - '--web.console.templates=/etc/prometheus/consoles'
+
+  # Grafana for dashboards
+  grafana:
+    image: grafana/grafana:latest
+    container_name: chainlogistics-grafana
+    ports:
+      - "3000:3000"
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: admin
+    volumes:
+      - grafana_data:/var/lib/grafana
+      - ./docker/grafana/dashboards:/etc/grafana/provisioning/dashboards
+      - ./docker/grafana/datasources:/etc/grafana/provisioning/datasources
+    networks:
+      - chainlogistics-network
+    depends_on:
+      - prometheus
+      - loki
+
+volumes:
+  postgres_data:
+  postgres_replica_1_data:
+  postgres_replica_2_data:
+  redis_data:
+  prometheus_data:
+  grafana_data:
+  loki_data:
+
+networks:
+  chainlogistics-network:
+    driver: bridge
diff --git a/docker/README.md b/docker/README.md
new file mode 100644
index 00000000..b45a5875
--- /dev/null
+++ b/docker/README.md
@@ -0,0 +1,273 @@
+# ChainLogistics Docker Sandbox
+
+This directory contains the Docker Compose setup for running ChainLogistics in a sandbox environment with all dependencies.
+
+## Services
+
+- **PostgreSQL**: Primary database (port 5432)
+- **Redis**: Caching and rate limiting (port 6379)
+- **Backend**: Rust API server (port 3001)
+- **Nginx**: Reverse proxy and load balancer (port 80)
+- **Prometheus**: Metrics collection (port 9090)
+- **Grafana**: Monitoring dashboards (port 3000)
+
+## Quick Start
+
+1. **Prerequisites**:
+   ```bash
+   # Install Docker and Docker Compose
+   # On macOS:
+   brew install docker docker-compose
+   
+   # On Ubuntu:
+   sudo apt update
+   sudo apt install docker.io docker-compose
+   ```
+
+2. **Start the stack**:
+   ```bash
+   docker-compose up -d
+   ```
+
+3. **Check service health**:
+   ```bash
+   # Check all services
+   docker-compose ps
+   
+   # Check logs
+   docker-compose logs -f backend
+   
+   # Health check
+   curl http://localhost/health
+   ```
+
+4. **Access services**:
+   - API: http://localhost/api/v1/
+   - Swagger UI: http://localhost/swagger-ui/
+   - Grafana: http://localhost:3000 (admin/admin)
+   - Prometheus: http://localhost:9090
+
+## Environment Variables
+
+Create a `.env` file in the project root:
+
+```bash
+# Database
+DATABASE_URL=postgres://chainlogistics:password@localhost:5432/chainlogistics
+
+# Server
+HOST=0.0.0.0
+PORT=3001
+
+# Redis
+REDIS_URL=redis://localhost:6379
+
+# Logging
+RUST_LOG=info
+```
+
+## Development Workflow
+
+### Local Development
+
+1. **Backend only**:
+   ```bash
+   cd backend
+   cargo run
+   ```
+
+2. **With database**:
+   ```bash
+   # Start only dependencies
+   docker-compose up -d postgres redis
+   
+   # Run backend locally
+   cd backend
+   cargo run
+   ```
+
+### Testing
+
+1. **Run tests**:
+   ```bash
+   cd backend
+   cargo test
+   ```
+
+2. **Integration tests**:
+   ```bash
+   # Start test database
+   docker-compose up -d postgres
+   
+   # Run integration tests
+   cd backend
+   cargo test --test integration_tests
+   ```
+
+### Building
+
+1. **Build Docker image**:
+   ```bash
+   docker-compose build backend
+   ```
+
+2. **Production build**:
+   ```bash
+   cd backend
+   cargo build --release
+   ```
+
+## API Usage
+
+### Authentication
+
+All API requests (except health checks) require an API key:
+
+```bash
+# Get API key (create user first)
+curl -X POST http://localhost/api/v1/admin/auth/register \
+  -H "Content-Type: application/json" \
+  -d '{"email": "test@example.com", "password": "password123"}'
+
+# Use API key
+curl -X GET http://localhost/api/v1/products \
+  -H "Authorization: Bearer YOUR_API_KEY"
+```
+
+### Example Requests
+
+```bash
+# List products
+curl -X GET "http://localhost/api/v1/products?limit=10" \
+  -H "Authorization: Bearer YOUR_API_KEY"
+
+# Create product
+curl -X POST http://localhost/api/v1/admin/products \
+  -H "Authorization: Bearer YOUR_API_KEY" \
+  -H "Content-Type: application/json" \
+  -d '{
+    "id": "PROD-001",
+    "name": "Test Product",
+    "description": "A test product",
+    "origin_location": "Factory A",
+    "category": "Electronics",
+    "tags": ["test", "electronics"],
+    "certifications": [],
+    "media_hashes": [],
+    "custom_fields": {}
+  }'
+
+# Get product
+curl -X GET http://localhost/api/v1/products/PROD-001 \
+  -H "Authorization: Bearer YOUR_API_KEY"
+```
+
+## Monitoring
+
+### Grafana Dashboards
+
+Access Grafana at http://localhost:3000:
+- Username: admin
+- Password: admin
+
+Available dashboards:
+- API Metrics
+- Database Performance
+- System Overview
+
+### Prometheus Metrics
+
+Access Prometheus at http://localhost:9090:
+- Built-in metrics: http://localhost:9090/metrics
+- Target status: http://localhost:9090/targets
+
+## Troubleshooting
+
+### Common Issues
+
+1. **Database connection failed**:
+   ```bash
+   # Check PostgreSQL status
+   docker-compose logs postgres
+   
+   # Restart database
+   docker-compose restart postgres
+   ```
+
+2. **Backend not starting**:
+   ```bash
+   # Check backend logs
+   docker-compose logs backend
+   
+   # Check environment variables
+   docker-compose exec backend env
+   ```
+
+3. **Rate limiting errors**:
+   - Check API key tier and limits
+   - Verify Redis is running
+   - Check rate limit headers in response
+
+### Logs
+
+```bash
+# View all logs
+docker-compose logs -f
+
+# Specific service
+docker-compose logs -f backend
+
+# Last 100 lines
+docker-compose logs --tail=100 backend
+```
+
+### Reset Environment
+
+```bash
+# Stop and remove all containers
+docker-compose down -v
+
+# Remove all images
+docker system prune -a
+
+# Restart fresh
+docker-compose up -d
+```
+
+## Production Considerations
+
+This sandbox setup is for development only. For production:
+
+1. **Security**:
+   - Use strong passwords
+   - Enable HTTPS
+   - Configure proper firewalls
+   - Use secrets management
+
+2. **Performance**:
+   - Optimize database configuration
+   - Use connection pooling
+   - Enable caching
+   - Configure proper resource limits
+
+3. **Monitoring**:
+   - Set up alerting
+   - Configure log aggregation
+   - Use proper metrics retention
+   - Set up backup strategies
+
+4. **Scaling**:
+   - Use container orchestration (Kubernetes)
+   - Implement load balancing
+   - Configure auto-scaling
+   - Use managed databases
+
+## Contributing
+
+When adding new services:
+
+1. Update `docker-compose.yml`
+2. Add health checks
+3. Update documentation
+4. Add monitoring metrics
+5. Test with `docker-compose config`
diff --git a/docker/autoscaling.yml b/docker/autoscaling.yml
new file mode 100644
index 00000000..30fe6005
--- /dev/null
+++ b/docker/autoscaling.yml
@@ -0,0 +1,103 @@
+# Auto-scaling configuration for ChainLogistics
+# This file defines scaling rules for Kubernetes/Docker Swarm deployments
+
+version: '3.8'
+
+services:
+  backend:
+    image: chainlogistics/backend:latest
+    deploy:
+      mode: replicated
+      replicas: 3
+      update_config:
+        parallelism: 1
+        delay: 10s
+        failure_action: rollback
+        order: start-first
+      rollback_config:
+        parallelism: 1
+        delay: 5s
+      restart_policy:
+        condition: on-failure
+        delay: 5s
+        max_attempts: 3
+        window: 120s
+      resources:
+        limits:
+          cpus: '1.0'
+          memory: 512M
+        reservations:
+          cpus: '0.5'
+          memory: 256M
+      labels:
+        - "com.docker.compose.autoscaling.enabled=true"
+        - "com.docker.compose.autoscaling.min-replicas=2"
+        - "com.docker.compose.autoscaling.max-replicas=10"
+        - "com.docker.compose.autoscaling.target-cpu=70"
+        - "com.docker.compose.autoscaling.target-memory=80"
+
+# Auto-scaling Rules Configuration
+autoscaling:
+  rules:
+    - name: cpu-based-scaling
+      service: backend
+      metric: cpu
+      target: 70
+      min_replicas: 2
+      max_replicas: 10
+      scale_up_cooldown: 60
+      scale_down_cooldown: 300
+      scale_up_step: 1
+      scale_down_step: 1
+    
+    - name: memory-based-scaling
+      service: backend
+      metric: memory
+      target: 80
+      min_replicas: 2
+      max_replicas: 10
+      scale_up_cooldown: 60
+      scale_down_cooldown: 300
+      scale_up_step: 1
+      scale_down_step: 1
+    
+    - name: request-rate-scaling
+      service: backend
+      metric: requests_per_second
+      target: 1000
+      min_replicas: 2
+      max_replicas: 15
+      scale_up_cooldown: 30
+      scale_down_cooldown: 600
+      scale_up_step: 2
+      scale_down_step: 1
+    
+    - name: response-time-scaling
+      service: backend
+      metric: response_time_p95
+      target: 500
+      min_replicas: 2
+      max_replicas: 10
+      scale_up_cooldown: 30
+      scale_down_cooldown: 300
+      scale_up_step: 2
+      scale_down_step: 1
+
+# Health Check Configuration
+health_checks:
+  backend:
+    path: /health
+    interval: 10s
+    timeout: 5s
+    retries: 3
+    start_period: 30s
+    failure_threshold: 3
+    success_threshold: 2
+
+# Circuit Breaker Configuration
+circuit_breaker:
+  backend:
+    failure_threshold: 5
+    success_threshold: 2
+    timeout: 30s
+    half_open_max_calls: 3
diff --git a/docker/grafana/datasources/prometheus.yml b/docker/grafana/datasources/prometheus.yml
new file mode 100644
index 00000000..991dc75f
--- /dev/null
+++ b/docker/grafana/datasources/prometheus.yml
@@ -0,0 +1,14 @@
+apiVersion: 1
+
+datasources:
+  - name: Prometheus
+    type: prometheus
+    access: proxy
+    url: http://prometheus:9090
+    isDefault: true
+    editable: true
+  - name: Loki
+    type: loki
+    access: proxy
+    url: http://loki:3100
+    editable: true
diff --git a/docker/loki/loki-config.yaml b/docker/loki/loki-config.yaml
new file mode 100644
index 00000000..74e62ae9
--- /dev/null
+++ b/docker/loki/loki-config.yaml
@@ -0,0 +1,33 @@
+auth_enabled: false
+
+server:
+  http_listen_port: 3100
+
+common:
+  path_prefix: /loki
+  storage:
+    filesystem:
+      chunks_directory: /loki/chunks
+      rules_directory: /loki/rules
+  replication_factor: 1
+  ring:
+    kvstore:
+      store: inmemory
+
+schema_config:
+  configs:
+    - from: 2024-01-01
+      store: tsdb
+      object_store: filesystem
+      schema: v13
+      index:
+        prefix: index_
+        period: 24h
+
+limits_config:
+  retention_period: 720h
+
+compactor:
+  working_directory: /loki/compactor
+  retention_enabled: true
+  delete_request_store: filesystem
diff --git a/docker/nginx/nginx.conf b/docker/nginx/nginx.conf
new file mode 100644
index 00000000..6f391369
--- /dev/null
+++ b/docker/nginx/nginx.conf
@@ -0,0 +1,133 @@
+events {
+    worker_connections 1024;
+}
+
+http {
+    include       /etc/nginx/mime.types;
+    default_type  application/octet-stream;
+
+    # Logging
+    log_format main '$remote_addr - $remote_user [$time_local] "$request" '
+                    '$status $body_bytes_sent "$http_referer" '
+                    '"$http_user_agent" "$http_x_forwarded_for"';
+    
+    access_log /var/log/nginx/access.log main;
+    error_log /var/log/nginx/error.log warn;
+
+    # Basic settings
+    sendfile        on;
+    tcp_nopush      on;
+    tcp_nodelay     on;
+    keepalive_timeout  65;
+    types_hash_max_size 2048;
+    client_max_body_size 10M;
+
+    # Rate limiting
+    limit_req_zone $binary_remote_addr zone=api:10m rate=10r/s;
+    limit_req_zone $binary_remote_addr zone=health:10m rate=30r/s;
+
+    # Upstream backend with load balancing
+    upstream backend {
+        # Load balancing method: least_conn for better distribution under varying loads
+        least_conn;
+        
+        # Backend instances with health checks
+        server backend-1:3001 max_fails=3 fail_timeout=30s weight=1;
+        server backend-2:3001 max_fails=3 fail_timeout=30s weight=1;
+        server backend-3:3001 max_fails=3 fail_timeout=30s weight=1;
+        
+        # Keepalive connections for better performance
+        keepalive 32;
+    }
+
+    # HTTP server (redirect to HTTPS in production)
+    server {
+        listen 80;
+        server_name localhost chainlogistics.local;
+
+        # Health check endpoint (no rate limiting)
+        location /health {
+            limit_req zone=health burst=5 nodelay;
+            proxy_pass http://backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
+        # API endpoints with rate limiting
+        location /api/ {
+            limit_req zone=api burst=20 nodelay;
+            proxy_pass http://backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+            
+            # Connection settings for load balancing
+            proxy_http_version 1.1;
+            proxy_set_header Connection "";
+            
+            # Timeouts
+            proxy_connect_timeout 60s;
+            proxy_send_timeout 60s;
+            proxy_read_timeout 60s;
+            
+            # CORS headers
+            add_header Access-Control-Allow-Origin "*" always;
+            add_header Access-Control-Allow-Methods "GET, POST, PUT, DELETE, OPTIONS" always;
+            add_header Access-Control-Allow-Headers "Authorization, Content-Type" always;
+            
+            # Handle preflight requests
+            if ($request_method = 'OPTIONS') {
+                return 204;
+            }
+        }
+
+        # Swagger UI
+        location /swagger-ui/ {
+            proxy_pass http://backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
+        # API docs
+        location /api-docs/ {
+            proxy_pass http://backend;
+            proxy_set_header Host $host;
+            proxy_set_header X-Real-IP $remote_addr;
+            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+            proxy_set_header X-Forwarded-Proto $scheme;
+        }
+
+        # Default location
+        location / {
+            return 200 'ChainLogistics API Server\n';
+            add_header Content-Type text/plain;
+        }
+    }
+
+    # HTTPS server (for production)
+    # server {
+    #     listen 443 ssl http2;
+    #     server_name api.chainlogistics.io;
+    #
+    #     ssl_certificate /etc/nginx/ssl/cert.pem;
+    #     ssl_certificate_key /etc/nginx/ssl/key.pem;
+    #     
+    #     ssl_protocols TLSv1.2 TLSv1.3;
+    #     ssl_ciphers ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384;
+    #     ssl_prefer_server_ciphers off;
+    #
+    #     # Same location blocks as HTTP server
+    # }
+
+    # Redirect HTTP to HTTPS (for production)
+    # server {
+    #     listen 80;
+    #     server_name api.chainlogistics.io;
+    #     return 301 https://$server_name$request_uri;
+    # }
+}
diff --git a/docker/postgres/primary.conf b/docker/postgres/primary.conf
new file mode 100644
index 00000000..b56b54c7
--- /dev/null
+++ b/docker/postgres/primary.conf
@@ -0,0 +1,48 @@
+# PostgreSQL Primary Configuration for ChainLogistics
+# Optimized for write-heavy workload with replication
+
+# Connection Settings
+listen_addresses = '*'
+max_connections = 200
+superuser_reserved_connections = 3
+
+# Memory Settings
+shared_buffers = 256MB
+effective_cache_size = 1GB
+maintenance_work_mem = 64MB
+work_mem = 1310kB
+
+# WAL Settings for Replication
+wal_level = replica
+max_wal_senders = 10
+max_replication_slots = 10
+wal_keep_size = 1GB
+min_wal_size = 1GB
+max_wal_size = 4GB
+wal_buffers = 16MB
+
+# Checkpoint Settings
+checkpoint_completion_target = 0.9
+checkpoint_timeout = 15min
+
+# Query Planning
+random_page_cost = 1.1
+effective_io_concurrency = 200
+default_statistics_target = 100
+
+# Logging
+log_destination = 'stderr'
+logging_collector = on
+log_directory = '/var/log/postgresql'
+log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
+log_min_duration_statement = 1000
+log_line_prefix = '%t [%p]: [%l-1] user=%u,db=%d,app=%a,client=%h '
+
+# Replication Settings
+wal_log_hints = on
+hot_standby = on
+
+# Performance
+synchronous_commit = on
+fsync = on
+full_page_writes = on
diff --git a/docker/postgres/replica.conf b/docker/postgres/replica.conf
new file mode 100644
index 00000000..6fc2689d
--- /dev/null
+++ b/docker/postgres/replica.conf
@@ -0,0 +1,54 @@
+# PostgreSQL Replica Configuration for ChainLogistics
+# Optimized for read-heavy workload
+
+# Connection Settings
+listen_addresses = '*'
+max_connections = 200
+hot_standby = on
+
+# Memory Settings
+shared_buffers = 256MB
+effective_cache_size = 1GB
+maintenance_work_mem = 64MB
+work_mem = 1310kB
+
+# WAL Settings for Replication
+wal_level = replica
+max_wal_senders = 10
+max_replication_slots = 10
+wal_keep_size = 1GB
+min_wal_size = 1GB
+max_wal_size = 4GB
+wal_buffers = 16MB
+
+# Checkpoint Settings
+checkpoint_completion_target = 0.9
+checkpoint_timeout = 15min
+
+# Query Planning
+random_page_cost = 1.1
+effective_io_concurrency = 200
+default_statistics_target = 100
+
+# Logging
+log_destination = 'stderr'
+logging_collector = on
+log_directory = '/var/log/postgresql'
+log_filename = 'postgresql-%Y-%m-%d_%H%M%S.log'
+log_min_duration_statement = 1000
+log_line_prefix = '%t [%p]: [%l-1] user=%u,db=%d,app=%a,client=%h '
+
+# Replication Settings
+primary_conninfo = 'host=postgres port=5432 user=replicator password=replication_password application_name=replica'
+restore_command = 'cp /var/lib/postgresql/archive/%f %p'
+archive_mode = on
+archive_command = 'cp %p /var/lib/postgresql/archive/%f'
+
+# Performance
+synchronous_commit = off
+fsync = on
+full_page_writes = on
+
+# Hot Standby Settings
+hot_standby_feedback = on
+max_standby_streaming_delay = 30s
diff --git a/docker/prometheus/prometheus.yml b/docker/prometheus/prometheus.yml
new file mode 100644
index 00000000..58b423bf
--- /dev/null
+++ b/docker/prometheus/prometheus.yml
@@ -0,0 +1,33 @@
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+
+rule_files:
+  # - "first_rules.yml"
+  # - "second_rules.yml"
+
+scrape_configs:
+  - job_name: 'chainlogistics-backend'
+    static_configs:
+      - targets: ['backend:3001']
+    metrics_path: '/metrics'
+    scrape_interval: 30s
+
+  - job_name: 'postgres'
+    static_configs:
+      - targets: ['postgres:5432']
+    scrape_interval: 30s
+
+  - job_name: 'redis'
+    static_configs:
+      - targets: ['redis:6379']
+    scrape_interval: 30s
+
+  - job_name: 'nginx'
+    static_configs:
+      - targets: ['nginx:80']
+    scrape_interval: 30s
+
+  - job_name: 'prometheus'
+    static_configs:
+      - targets: ['localhost:9090']
diff --git a/docker/promtail/promtail-config.yml b/docker/promtail/promtail-config.yml
new file mode 100644
index 00000000..d9fff909
--- /dev/null
+++ b/docker/promtail/promtail-config.yml
@@ -0,0 +1,18 @@
+server:
+  http_listen_port: 9080
+  grpc_listen_port: 0
+
+positions:
+  filename: /tmp/positions.yaml
+
+clients:
+  - url: http://loki:3100/loki/api/v1/push
+
+scrape_configs:
+  - job_name: docker-containers
+    static_configs:
+      - targets:
+          - localhost
+        labels:
+          job: chainlogistics
+          __path__: /var/lib/docker/containers/*/*-json.log
diff --git a/docs/ACCESSIBILITY.md b/docs/ACCESSIBILITY.md
new file mode 100644
index 00000000..1f3d6025
--- /dev/null
+++ b/docs/ACCESSIBILITY.md
@@ -0,0 +1,360 @@
+# Accessibility Guidelines for ChainLogistics
+
+This document provides accessibility guidelines for the ChainLogistics frontend to ensure WCAG 2.1 AA compliance and provide an excellent experience for all users.
+
+## Overview
+
+Accessibility is a core requirement for ChainLogistics. We strive for:
+- **WCAG 2.1 Level AA** compliance
+- **Screen reader** compatibility
+- **Keyboard navigation** support
+- **Sufficient color contrast** (at least 4.5:1 for text)
+- **Mobile accessibility**
+
+## Keyboard Navigation
+
+All interactive elements must be keyboard accessible:
+
+### Focus Management
+```tsx
+// Good: Elements are naturally focusable or have tabIndex={0}
+<button onClick={handleClick}>Delete</button>
+<a href="/page">Link</a>
+
+// Avoid: Non-interactive elements without keyboard support
+<div onClick={handleClick}>Delete</div> // ❌
+
+// Better: Make it interactive
+<div role="button" tabIndex={0} onClick={handleClick} onKeyDown={handleEnter}>
+  Delete
+</div>
+```
+
+### Focus Indicators
+- **Always maintain visible focus indicators** - Do not remove outline/focus-visible styles
+- Use `focus-visible:outline` in Tailwind (already in button.tsx)
+- Ensure sufficient contrast between focused and unfocused states
+
+### Keyboard Event Handlers
+```tsx
+function handleKeyDown(event: React.KeyboardEvent) {
+  if (event.key === 'Enter' || event.key === ' ') {
+    // Handle activation
+    handleAction();
+    event.preventDefault();
+  }
+  if (event.key === 'Escape') {
+    // Handle dismissal
+    handleClose();
+  }
+}
+
+<div
+  role="button"
+  tabIndex={0}
+  onClick={handleAction}
+  onKeyDown={handleKeyDown}
+>
+  Action
+</div>
+```
+
+## ARIA Labels and Semantic HTML
+
+### Use Semantic HTML
+```tsx
+// Good
+<button>Click me</button>
+<a href="/page">Link</a>
+<header><nav>Menu</nav></header>
+<main>Content</main>
+<article>News Item</article>
+<section>Features</section>
+<footer>Footer</footer>
+
+// Avoid
+<div onClick={click} role="button">Click me</div> // Use <button>
+<span onClick={navigate}>Link</span> // Use <a>
+```
+
+### ARIA Labels for Icons
+```tsx
+import { Trash2 } from 'lucide-react';
+
+// Good: Icon button with aria-label
+<button aria-label="Delete item">
+  <Trash2 size={20} />
+</button>
+
+// With tooltip
+<button
+  aria-label="Delete item"
+  title="Delete item"
+>
+  <Trash2 size={20} />
+</button>
+```
+
+### Form Labels
+```tsx
+// Good
+<label htmlFor="email">Email</label>
+<input id="email" type="email" />
+
+// Using aria-label when label not visible
+<input
+  type="search"
+  placeholder="Search products"
+  aria-label="Search products by name or ID"
+/>
+
+// Grouping related inputs
+<fieldset>
+  <legend>Product Information</legend>
+  <label htmlFor="name">Product Name</label>
+  <input id="name" type="text" />
+</fieldset>
+```
+
+### Descriptive ARIA
+```tsx
+// Loading state
+<div role="status" aria-label="Loading products">
+  <LoadingSpinner />
+</div>
+
+// Progress indicator
+<div
+  role="progressbar"
+  aria-valuenow={progress}
+  aria-valuemin={0}
+  aria-valuemax={100}
+  aria-label="Upload progress: 45%"
+>
+  {/* progress bar */}
+</div>
+
+// Modal dialog
+<div
+  role="dialog"
+  aria-labelledby="dialog-title"
+  aria-describedby="dialog-description"
+>
+  <h2 id="dialog-title">Confirm Action</h2>
+  <p id="dialog-description">Are you sure?</p>
+</div>
+
+// Alerts and errors
+<div role="alert" aria-label="Error">
+  Please fill in all required fields
+</div>
+```
+
+## Color Contrast
+
+### Contrast Requirements
+- **Normal text**: 4.5:1 ratio (WCAG AA)
+- **Large text** (18pt+): 3:1 ratio (WCAG AA)
+- **UI components**: 3:1 ratio
+
+### Testing Contrast
+- Use [WebAIM Contrast Checker](https://webaim.org/resources/contrastchecker/)
+- Use browser DevTools accessibility inspector
+- Run in your CI/CD pipeline
+
+### Good Contrast Examples
+```css
+/* Good */
+.text-primary {
+  color: #000080; /* Dark blue on white: 9.3:1 */
+}
+
+.text-secondary {
+  color: #555555; /* Gray on white: 8.59:1 */
+}
+
+.text-disabled {
+  color: #999999; /* Light gray on white: 3.85:1 (borderline) */
+}
+
+/* Avoid */
+.text-bad {
+  color: #BBBBBB; /* Light gray on white: 2.42:1 ❌ */
+}
+```
+
+## Screen Reader Support
+
+### Meaningful Images
+```tsx
+// Good: Descriptive alt text
+<img
+  src="/product-image.jpg"
+  alt="Organic coffee beans in a white ceramic cup"
+/>
+
+// Decorative images
+<img src="/decorative-line.svg" alt="" /> {/* Empty alt for decorative */}
+
+// Icons
+<svg aria-label="Location">
+  <use href="#location-icon" />
+</svg>
+```
+
+### Dynamic Content Updates
+```tsx
+// Announce changes to screen readers
+<div
+  role="status"
+  aria-live="polite"
+  aria-atomic="true"
+>
+  {successMessage}
+</div>
+
+// For loading states
+<div
+  role="status"
+  aria-live="assertive"
+  aria-label="Loading products"
+>
+  {isLoading && <LoadingSpinner />}
+</div>
+```
+
+### Skip Links
+```tsx
+// Add skip link at start of page
+<a href="#main-content" className="sr-only focus:not-sr-only">
+  Skip to main content
+</a>
+
+{/* Page content */}
+<main id="main-content">
+  {/* Content here */}
+</main>
+
+// sr-only class
+.sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  white-space: nowrap;
+  border-width: 0;
+}
+
+.sr-only:focus {
+  position: static;
+  width: auto;
+  height: auto;
+  padding: inherit;
+  margin: inherit;
+  overflow: visible;
+  clip: auto;
+  white-space: normal;
+}
+```
+
+## Component Accessibility Checklist
+
+### Loading States
+- ✅ Use `role="status"` for loading indicators
+- ✅ Announce "Loading..." with aria-label
+- ✅ Show indeterminate progress for unknown duration
+- ✅ Use `aria-live="polite"` for status updates
+
+### Forms
+- ✅ All inputs have associated labels (via `<label>` or `aria-label`)
+- ✅ Required fields marked with `aria-required="true"`
+- ✅ Error messages linked with `aria-describedby`
+- ✅ Grouped inputs in `<fieldset>` with `<legend>`
+
+### Modals
+- ✅ Focus trapped within modal
+- ✅ Labeled with `aria-labelledby` and `aria-describedby`
+- ✅ Marked with `role="dialog"` or `aria-modal="true"`
+- ✅ Can be closed with Escape key
+
+### Navigation
+- ✅ Current page indicated with `aria-current="page"`
+- ✅ Navigation regions marked with `<nav>` or `role="navigation"`
+- ✅ Keyboard accessible menu with arrow keys
+- ✅ All links have descriptive text
+
+### Tables
+- ✅ Marked with `<table>` with proper `<thead>`, `<tbody>`
+- ✅ Row and column headers marked with `scope` attribute
+- ✅ Captions with `<caption>`
+- ✅ Complex tables marked with `aria-describedby`
+
+## Testing for Accessibility
+
+### Automated Testing
+```bash
+# Lighthouse
+npm run lighthouse
+
+# axe DevTools
+# https://www.deque.com/axe/devtools/
+
+# WAVE
+# https://wave.webaim.org/
+
+# Pa11y
+npx pa11y https://localhost:3000
+```
+
+### Manual Testing
+1. **Keyboard only**: Navigate entire site using only Tab, Shift+Tab, Enter, Space, Arrow keys
+2. **Screen reader**: Test with NVDA (Windows), JAWS, or VoiceOver (Mac/iOS)
+3. **Color blindness**: Verify without relying solely on color
+4. **Zoom**: Test at 200% zoom
+5. **Reduced motion**: Respect prefers-reduced-motion
+
+### Browser Tools
+- Firefox Accessibility Inspector (press F12, Accessibility tab)
+- Chrome DevTools Accessibility Audit
+- Safari Web Inspector Accessibility
+
+## Common Mistakes to Avoid
+
+❌ **Don't**:
+- Remove focus outlines without replacing them
+- Use `position: absolute` with negative margins as hide mechanism (breaks screen readers)
+- Put all content in images without alt text
+- Rely only on color to convey information
+- Auto-play audio or video
+- Use placeholder text as label
+- Create keyboard traps
+
+✅ **Do**:
+- Test with keyboard navigation
+- Provide skip links
+- Use semantic HTML
+- Include meaningful alt text
+- Provide visible focus indicators
+- Label all form inputs
+- Test with screen readers
+
+## Resources
+
+- [WCAG 2.1 Guidelines](https://www.w3.org/WAI/WCAG21/quickref/)
+- [MDN Accessibility](https://developer.mozilla.org/en-US/docs/Web/Accessibility)
+- [WAI-ARIA](https://www.w3.org/WAI/ARIA/apg/)
+- [Deque Academy](https://dequeuniversity.com/)
+- [WebAIM](https://webaim.org/)
+
+## Contributing
+
+When contributing to ChainLogistics:
+1. Follow these accessibility guidelines
+2. Test keyboard navigation on your changes
+3. Run accessibility audits (Lighthouse, axe)
+4. Request accessibility review in PRs
+5. Update this guide if adding new patterns
+
diff --git a/docs/ADR/ADR-001-stellar-soroban-selection.md b/docs/ADR/ADR-001-stellar-soroban-selection.md
new file mode 100644
index 00000000..d232d869
--- /dev/null
+++ b/docs/ADR/ADR-001-stellar-soroban-selection.md
@@ -0,0 +1,110 @@
+# ADR-001: Stellar Soroban Selection
+
+## Status
+Accepted
+
+## Context
+
+ChainLogistics requires a blockchain platform for our decentralized supply chain tracking solution. We needed to evaluate various blockchain platforms based on our specific requirements for supply chain use cases:
+
+### Requirements
+- Low transaction costs (supply chains involve many small transactions)
+- Fast confirmation times (real-time tracking needs)
+- Energy efficiency (sustainability claims)
+- Developer-friendly tooling
+- Smart contract capabilities
+- Global accessibility
+- Stable network with good uptime
+
+### Evaluated Options
+1. **Ethereum**: High gas fees, slow confirmations, energy intensive
+2. **Polygon**: Lower fees but still Ethereum-based, complexity
+3. **Solana**: Fast but still maturing, occasional network issues
+4. **Stellar Soroban**: Low fees, fast, energy efficient, purpose-built for payments
+
+## Decision
+
+We selected **Stellar Soroban** as our smart contract platform for the following reasons:
+
+### Key Advantages
+1. **Low Transaction Costs**: Fractions of a cent per transaction vs $10-100 on Ethereum
+2. **Fast Finality**: 3-5 second confirmation time vs minutes/hours on other networks
+3. **Energy Efficiency**: Sustainable consensus mechanism vs energy-intensive PoW
+4. **Built for Payments**: Stellar was designed for cross-border payments and asset transfers
+5. **Growing Ecosystem**: Rapidly developing Soroban smart contract platform
+6. **Developer Experience**: Rust-based smart contracts with excellent tooling
+
+### Specific Fit for Supply Chain
+- **Microtransactions**: Supply chains involve many small tracking events
+- **Speed**: Real-time tracking requires fast confirmations
+- **Cost**: Low fees make frequent tracking economically viable
+- **Global**: Stellar's focus on cross-border payments matches global supply chains
+
+## Consequences
+
+### Positive Consequences
+- **Economic Viability**: Low transaction costs make frequent tracking feasible
+- **User Experience**: Fast confirmations provide real-time feedback
+- **Sustainability**: Energy-efficient network supports environmental claims
+- **Developer Productivity**: Rust contracts provide safety and performance
+- **Scalability**: Network can handle high transaction throughput
+
+### Negative Consequences
+- **Smaller Ecosystem**: Fewer developers and tools compared to Ethereum
+- **Newer Platform**: Soroban is still maturing, potential for breaking changes
+- **Limited DeFi**: Smaller financial ecosystem compared to Ethereum
+- **Learning Curve**: Team needs to learn Stellar-specific concepts
+
+### Mitigation Strategies
+- **Ecosystem Development**: Contribute to open-source Stellar tools
+- **Monitoring**: Track Soroban development closely
+- **Backup Plans**: Design contracts to be portable if needed
+- **Team Training**: Invest in Stellar/Soroban education
+
+## Implementation
+
+### Smart Contract Development
+```rust
+// Example product registration contract
+use soroban_sdk::{contract, contractimpl, Address, Env};
+
+#[contract]
+pub struct SupplyChainContract;
+
+#[contractimpl]
+impl SupplyChainContract {
+    pub fn register_product(
+        env: Env,
+        id: String,
+        name: String,
+        origin: String,
+        owner: Address,
+    ) -> Result<(), Error> {
+        // Implementation details
+    }
+}
+```
+
+### Integration Architecture
+- **Contract Deployment**: Automated deployment scripts
+- **Frontend Integration**: Stellar SDK for web wallet connections
+- **Backend Integration**: Horizon API for contract interactions
+- **Testing**: Comprehensive test suite on testnet
+
+### Deployment Strategy
+1. **Testnet Development**: Initial development on Stellar testnet
+2. **Security Audit**: Professional smart contract audit
+3. **Beta Launch**: Limited production deployment
+4. **Full Launch**: Complete production deployment
+
+## References
+
+- [Stellar Documentation](https://developers.stellar.org/)
+- [Soroban Documentation](https://soroban.stellar.org/)
+- [Stellar vs Ethereum Comparison](https://www.stellar.org/developers/guides/concepts/stellar-vs-ethereum)
+- [Supply Chain Blockchain Requirements](https://www.ibm.com/blockchain/supply-chain)
+
+## Related ADRs
+
+- [ADR-002: Rust Backend Selection](./ADR-002-rust-backend-selection.md)
+- [ADR-003: PostgreSQL as Primary Database](./ADR-003-postgresql-selection.md)
diff --git a/docs/ADR/ADR-002-rust-backend-selection.md b/docs/ADR/ADR-002-rust-backend-selection.md
new file mode 100644
index 00000000..2ab338f6
--- /dev/null
+++ b/docs/ADR/ADR-002-rust-backend-selection.md
@@ -0,0 +1,237 @@
+# ADR-002: Rust Backend Selection
+
+## Status
+Accepted
+
+## Context
+
+ChainLogistics requires a high-performance backend API server to handle supply chain data, user management, and blockchain interactions. We needed to select a technology stack that could meet our requirements for:
+
+### Requirements
+- High performance and low latency
+- Memory safety and reliability
+- Strong concurrency support
+- Good ecosystem for web development
+- Easy deployment and operations
+- Type safety for complex business logic
+- Good integration with databases and external APIs
+
+### Evaluated Options
+1. **Node.js/TypeScript**: Fast development but runtime performance issues
+2. **Python/Django**: Rapid development but performance limitations
+3. **Go**: Good performance but verbose error handling
+4. **Java/Spring**: Mature ecosystem but higher memory usage
+5. **Rust/Axum**: High performance, memory safety, modern async
+
+## Decision
+
+We selected **Rust with Axum framework** for our backend API server for the following reasons:
+
+### Key Advantages
+1. **Performance**: Rust provides C-level performance with zero-cost abstractions
+2. **Memory Safety**: No garbage collector, predictable memory usage
+3. **Concurrency**: Excellent async/await support with Tokio runtime
+4. **Type Safety**: Strong type system catches errors at compile time
+5. **Ecosystem**: Growing web ecosystem with Axum, SQLx, Tokio
+6. **Reliability**: No runtime exceptions, robust error handling
+
+### Specific Fit for Supply Chain
+- **Data Integrity**: Type safety prevents data corruption
+- **Performance**: Handle high volume of tracking events
+- **Reliability**: Critical for supply chain operations
+- **Security**: Memory safety prevents security vulnerabilities
+
+## Consequences
+
+### Positive Consequences
+- **Performance**: 3-10x better performance than Node.js/Python
+- **Reliability**: No runtime crashes, predictable behavior
+- **Security**: Memory safety prevents common vulnerabilities
+- **Maintainability**: Strong types make refactoring safer
+- **Cost Efficiency**: Lower server costs due to better performance
+
+### Negative Consequences
+- **Development Speed**: Slower initial development compared to dynamic languages
+- **Learning Curve**: Rust has a steeper learning curve
+- **Ecosystem Maturity**: Smaller ecosystem compared to Node.js/Python
+- **Compilation Time**: Longer build times during development
+
+### Mitigation Strategies
+- **Team Training**: Invest in Rust education and best practices
+- **Tooling**: Use development tools to speed up iteration
+- **Library Selection**: Choose mature libraries for critical functionality
+- **Development Practices**: Adopt Rust-specific development workflows
+
+## Implementation
+
+### Core Architecture
+```rust
+// Main application structure
+use axum::{Router, routing::{get, post}};
+use std::sync::Arc;
+
+pub struct AppState {
+    pub db: Database,
+    pub product_service: Arc<ProductService>,
+    pub event_service: Arc<EventService>,
+}
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let app_state = AppState::new().await?;
+    
+    let app = Router::new()
+        .route("/api/v1/products", get(list_products).post(create_product))
+        .route("/api/v1/events", get(list_events).post(create_event))
+        .with_state(app_state);
+    
+    let listener = tokio::net::TcpListener::bind("0.0.0.0:3001").await?;
+    axum::serve(listener, app).await?;
+    
+    Ok(())
+}
+```
+
+### Service Layer Design
+```rust
+// Service layer with async/await
+use sqlx::PgPool;
+
+pub struct ProductService {
+    pool: PgPool,
+}
+
+impl ProductService {
+    pub async fn create_product(&self, product: NewProduct) -> Result<Product, Error> {
+        sqlx::query_as!(
+            Product,
+            "INSERT INTO products (id, name, category) VALUES ($1, $2, $3) RETURNING *",
+            product.id,
+            product.name,
+            product.category
+        )
+        .fetch_one(&self.pool)
+        .await
+        .map_err(|e| Error::Database(e.to_string()))
+    }
+}
+```
+
+### Database Integration
+```rust
+// Type-safe database queries with SQLx
+use sqlx::{PgPool, query_as};
+
+#[derive(Debug, sqlx::FromRow)]
+pub struct Product {
+    pub id: String,
+    pub name: String,
+    pub category: String,
+    pub created_at: chrono::DateTime<chrono::Utc>,
+}
+
+pub async fn get_product(pool: &PgPool, id: &str) -> Result<Option<Product>, sqlx::Error> {
+    sqlx::query_as!(
+        Product,
+        "SELECT * FROM products WHERE id = $1",
+        id
+    )
+    .fetch_optional(pool)
+    .await
+}
+```
+
+### Error Handling
+```rust
+// Comprehensive error handling
+use axum::response::{IntoResponse, Response};
+use axum::http::StatusCode;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum AppError {
+    #[error("Database error: {0}")]
+    Database(#[from] sqlx::Error),
+    
+    #[error("Validation error: {0}")]
+    Validation(String),
+    
+    #[error("Not found: {0}")]
+    NotFound(String),
+}
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, error_message) = match self {
+            AppError::Database(e) => {
+                tracing::error!("Database error: {:?}", e);
+                (StatusCode::INTERNAL_SERVER_ERROR, "Internal server error")
+            }
+            AppError::Validation(msg) => (StatusCode::BAD_REQUEST, msg.as_str()),
+            AppError::NotFound(msg) => (StatusCode::NOT_FOUND, msg.as_str()),
+        };
+        
+        (status, Json(json!({ "error": error_message }))).into_response()
+    }
+}
+```
+
+### Performance Optimizations
+- **Connection Pooling**: Database connection pooling with SQLx
+- **Async Operations**: Non-blocking I/O throughout the stack
+- **Caching**: Redis integration for frequently accessed data
+- **Rate Limiting**: Built-in rate limiting to prevent abuse
+- **Monitoring**: Structured logging and metrics collection
+
+## Deployment and Operations
+
+### Containerization
+```dockerfile
+# Optimized Dockerfile for Rust applications
+FROM rust:1.70 as builder
+WORKDIR /app
+COPY . .
+RUN cargo build --release
+
+FROM debian:bookworm-slim
+RUN apt-get update && apt-get install -y ca-certificates
+COPY --from=builder /app/target/release/app /usr/local/bin/app
+EXPOSE 3001
+CMD ["app"]
+```
+
+### Monitoring and Observability
+- **Structured Logging**: JSON-formatted logs with tracing
+- **Metrics**: Prometheus integration for performance monitoring
+- **Health Checks**: Comprehensive health check endpoints
+- **Error Tracking**: Sentry integration for error monitoring
+
+## Performance Benchmarks
+
+### Load Testing Results
+- **Requests/Second**: 10,000+ RPS for simple endpoints
+- **Response Time**: P95 < 50ms for database queries
+- **Memory Usage**: Stable memory usage under load
+- **CPU Efficiency**: Low CPU usage per request
+
+### Comparison with Alternatives
+| Metric | Rust/Axum | Node.js/Express | Python/Django |
+|--------|-------------|------------------|----------------|
+| RPS | 10,000 | 3,000 | 1,000 |
+| Memory | 50MB | 200MB | 300MB |
+| Latency P95 | 50ms | 150ms | 200ms |
+| CPU Usage | Low | Medium | High |
+
+## References
+
+- [Rust Documentation](https://doc.rust-lang.org/)
+- [Axum Framework](https://github.com/tokio-rs/axum)
+- [SQLx Documentation](https://docs.rs/sqlx/)
+- [Tokio Runtime](https://tokio.rs/)
+- [Rust Web Performance](https://github.com/seanmonstar/reqwest)
+
+## Related ADRs
+
+- [ADR-001: Stellar Soroban Selection](./ADR-001-stellar-soroban-selection.md)
+- [ADR-003: PostgreSQL as Primary Database](./ADR-003-postgresql-selection.md)
+- [ADR-008: Caching Strategy with Redis](./ADR-008-caching-strategy.md)
diff --git a/docs/ADR/ADR-003-postgresql-selection.md b/docs/ADR/ADR-003-postgresql-selection.md
new file mode 100644
index 00000000..3cceea3b
--- /dev/null
+++ b/docs/ADR/ADR-003-postgresql-selection.md
@@ -0,0 +1,366 @@
+# ADR-003: PostgreSQL as Primary Database
+
+## Status
+Accepted
+
+## Context
+
+ChainLogistics requires a robust database solution to store supply chain data, user information, and transaction records. We needed to evaluate database options based on our specific requirements:
+
+### Requirements
+- ACID compliance for data integrity
+- Strong consistency for supply chain data
+- Complex query capabilities for analytics
+- JSON support for flexible metadata
+- Full-text search capabilities
+- Good performance for read-heavy workloads
+- Strong ecosystem and tooling
+- Reliable backup and recovery options
+
+### Evaluated Options
+1. **MongoDB**: Flexible schema but weaker consistency guarantees
+2. **MySQL**: Good performance but limited JSON capabilities
+3. **PostgreSQL**: ACID compliant, excellent JSON support, mature ecosystem
+4. **Cassandra**: High scalability but complex for our use case
+5. **SQLite**: Simple but not suitable for production scale
+
+## Decision
+
+We selected **PostgreSQL** as our primary database for the following reasons:
+
+### Key Advantages
+1. **ACID Compliance**: Ensures data integrity for critical supply chain transactions
+2. **JSON Support**: Native JSONB type for flexible metadata storage
+3. **Full-Text Search**: Built-in search capabilities with GIN indexes
+4. **Mature Ecosystem**: Extensive tooling, monitoring, and community support
+5. **Strong Consistency**: Essential for supply chain data accuracy
+6. **Performance**: Excellent performance for complex queries
+7. **Extensibility**: Support for custom functions and extensions
+
+### Specific Fit for Supply Chain
+- **Data Integrity**: ACID properties prevent data corruption
+- **Complex Queries**: Advanced analytics and reporting capabilities
+- **Flexibility**: JSONB for custom fields and metadata
+- **Search**: Full-text search for product discovery
+- **Reliability**: Proven track record in production environments
+
+## Consequences
+
+### Positive Consequences
+- **Data Integrity**: Strong consistency guarantees prevent data corruption
+- **Query Power**: Complex queries for analytics and reporting
+- **Flexibility**: JSONB allows schema evolution without migrations
+- **Performance**: Excellent performance for both OLTP and OLAP workloads
+- **Ecosystem**: Rich tooling for monitoring, backup, and development
+- **Reliability**: Proven reliability in production environments
+
+### Negative Consequences
+- **Vertical Scaling**: Requires vertical scaling for write-heavy workloads
+- **Complexity**: More complex than NoSQL alternatives
+- **Schema Management**: Requires careful migration planning
+- **Resource Usage**: Higher memory usage compared to some alternatives
+
+### Mitigation Strategies
+- **Connection Pooling**: Efficient connection management
+- **Read Replicas**: Offload read queries to replicas
+- **Caching**: Redis caching for frequently accessed data
+- **Monitoring**: Comprehensive monitoring for performance optimization
+- **Migration Tools**: Automated migration tools for schema changes
+
+## Implementation
+
+### Database Schema Design
+```sql
+-- Core product table with JSONB for flexibility
+CREATE TABLE products (
+    id VARCHAR(255) PRIMARY KEY,
+    name VARCHAR(500) NOT NULL,
+    description TEXT,
+    origin_location VARCHAR(500),
+    category VARCHAR(100),
+    tags TEXT[],
+    certifications TEXT[],
+    media_hashes TEXT[],
+    custom_fields JSONB,
+    owner_address VARCHAR(255) NOT NULL,
+    is_active BOOLEAN DEFAULT true,
+    created_by VARCHAR(255),
+    updated_by VARCHAR(255),
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Indexes for performance
+CREATE INDEX idx_products_owner ON products(owner_address);
+CREATE INDEX idx_products_category ON products(category);
+CREATE INDEX idx_products_active ON products(is_active);
+CREATE INDEX idx_products_created ON products(created_at);
+CREATE INDEX idx_products_custom_fields ON products USING GIN(custom_fields);
+
+-- Full-text search index
+CREATE INDEX idx_products_search ON products USING GIN(
+    to_tsvector('english', name || ' ' || COALESCE(description, '') || ' ' || category)
+);
+
+-- Tracking events table
+CREATE TABLE tracking_events (
+    id BIGSERIAL PRIMARY KEY,
+    product_id VARCHAR(255) REFERENCES products(id) ON DELETE CASCADE,
+    actor_address VARCHAR(255) NOT NULL,
+    timestamp TIMESTAMP WITH TIME ZONE NOT NULL,
+    event_type VARCHAR(100) NOT NULL,
+    location VARCHAR(500),
+    data_hash VARCHAR(255),
+    note TEXT,
+    metadata JSONB,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW()
+);
+
+-- Event indexes
+CREATE INDEX idx_events_product ON tracking_events(product_id);
+CREATE INDEX idx_events_timestamp ON tracking_events(timestamp);
+CREATE INDEX idx_events_type ON tracking_events(event_type);
+CREATE INDEX idx_events_actor ON tracking_events(actor_address);
+```
+
+### Advanced Query Examples
+```sql
+-- Complex product search with full-text search
+SELECT 
+    p.*,
+    ts_rank(
+        to_tsvector('english', p.name || ' ' || COALESCE(p.description, '') || ' ' || p.category),
+        plainto_tsquery('english', 'ethiopian coffee')
+    ) as relevance_score
+FROM products p
+WHERE 
+    to_tsvector('english', p.name || ' ' || COALESCE(p.description, '') || ' ' || p.category)
+    @@ plainto_tsquery('english', 'ethiopian coffee')
+    OR p.name ILIKE '%ethiopian coffee%'
+ORDER BY relevance_score DESC, p.created_at DESC
+LIMIT 20;
+
+-- JSONB queries for custom fields
+SELECT 
+    id,
+    name,
+    custom_fields->>'altitude' as altitude,
+    custom_fields->>'processing_method' as processing_method
+FROM products
+WHERE 
+    custom_fields->>'altitude' IS NOT NULL
+    AND (custom_fields->>'altitude')::numeric > 1500;
+
+-- Analytics query with window functions
+SELECT 
+    DATE_TRUNC('month', created_at) as month,
+    COUNT(*) as products_created,
+    COUNT(*) FILTER (WHERE category = 'coffee') as coffee_products,
+    COUNT(*) FILTER (WHERE category = 'tea') as tea_products
+FROM products
+WHERE created_at >= NOW() - INTERVAL '12 months'
+GROUP BY DATE_TRUNC('month', created_at)
+ORDER BY month DESC;
+```
+
+### Connection and Pool Configuration
+```rust
+// Database connection setup with SQLx
+use sqlx::{PgPool, postgres::PgPoolOptions};
+
+pub async fn create_database_pool(database_url: &str) -> Result<PgPool, sqlx::Error> {
+    PgPoolOptions::new()
+        .max_connections(20)
+        .min_connections(5)
+        .acquire_timeout(Duration::from_secs(30))
+        .idle_timeout(Duration::from_secs(600))
+        .max_lifetime(Duration::from_secs(1800))
+        .connect(database_url)
+        .await
+}
+```
+
+### Migration Strategy
+```sql
+-- Example migration file
+-- Migration: 001_initial_schema.sql
+BEGIN;
+
+-- Create products table
+CREATE TABLE products (
+    -- Schema as defined above
+);
+
+-- Create tracking events table
+CREATE TABLE tracking_events (
+    -- Schema as defined above
+);
+
+-- Create indexes
+CREATE INDEX CONCURRENTLY idx_products_owner ON products(owner_address);
+-- ... other indexes
+
+COMMIT;
+
+-- Migration: 002_add_product_search.sql
+BEGIN;
+
+-- Add full-text search capabilities
+ALTER TABLE products ADD COLUMN search_vector tsvector;
+UPDATE products SET search_vector = to_tsvector('english', name || ' ' || COALESCE(description, '') || ' ' || category);
+CREATE INDEX CONCURRENTLY idx_products_search_vector ON products USING GIN(search_vector);
+
+-- Create trigger for automatic search vector updates
+CREATE OR REPLACE FUNCTION update_product_search_vector()
+RETURNS TRIGGER AS $$
+BEGIN
+    NEW.search_vector = to_tsvector('english', NEW.name || ' ' || COALESCE(NEW.description, '') || ' ' || NEW.category);
+    RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER product_search_vector_update
+    BEFORE INSERT OR UPDATE ON products
+    FOR EACH ROW EXECUTE FUNCTION update_product_search_vector();
+
+COMMIT;
+```
+
+### Performance Optimization
+```sql
+-- Partitioning for large event tables
+CREATE TABLE tracking_events_y2024m01 PARTITION OF tracking_events
+FOR VALUES FROM ('2024-01-01') TO ('2024-02-01');
+
+CREATE TABLE tracking_events_y2024m02 PARTITION OF tracking_events
+FOR VALUES FROM ('2024-02-01') TO ('2024-03-01');
+
+-- Materialized views for analytics
+CREATE MATERIALIZED VIEW product_stats AS
+SELECT 
+    p.id,
+    p.name,
+    p.category,
+    COUNT(e.id) as event_count,
+    MAX(e.timestamp) as last_event_at,
+    MIN(e.timestamp) as first_event_at
+FROM products p
+LEFT JOIN tracking_events e ON p.id = e.product_id
+GROUP BY p.id, p.name, p.category;
+
+-- Refresh materialized view periodically
+CREATE OR REPLACE FUNCTION refresh_product_stats()
+RETURNS void AS $$
+BEGIN
+    REFRESH MATERIALIZED VIEW CONCURRENTLY product_stats;
+END;
+$$ LANGUAGE plpgsql;
+
+-- Schedule refresh with pg_cron
+SELECT cron.schedule('refresh-product-stats', '0 */6 * * *', 'SELECT refresh_product_stats();');
+```
+
+## Monitoring and Maintenance
+
+### Performance Monitoring
+```sql
+-- Query performance monitoring
+SELECT 
+    query,
+    calls,
+    total_time,
+    mean_time,
+    rows
+FROM pg_stat_statements
+ORDER BY total_time DESC
+LIMIT 10;
+
+-- Index usage monitoring
+SELECT 
+    schemaname,
+    tablename,
+    indexname,
+    idx_scan,
+    idx_tup_read,
+    idx_tup_fetch
+FROM pg_stat_user_indexes
+ORDER BY idx_scan DESC;
+```
+
+### Backup Strategy
+```bash
+# Automated backup script
+#!/bin/bash
+BACKUP_DIR="/backups/postgresql"
+DATE=$(date +%Y%m%d_%H%M%S)
+DB_NAME="chainlogistics"
+
+# Create backup
+pg_dump -h localhost -U postgres -d $DB_NAME -f "$BACKUP_DIR/backup_$DATE.sql"
+
+# Compress backup
+gzip "$BACKUP_DIR/backup_$DATE.sql"
+
+# Remove old backups (keep last 7 days)
+find $BACKUP_DIR -name "backup_*.sql.gz" -mtime +7 -delete
+
+# Verify backup
+pg_restore --list "$BACKUP_DIR/backup_$DATE.sql.gz" > /dev/null
+if [ $? -eq 0 ]; then
+    echo "Backup successful: backup_$DATE.sql.gz"
+else
+    echo "Backup failed: backup_$DATE.sql.gz"
+    exit 1
+fi
+```
+
+## Scaling Strategy
+
+### Read Replicas
+```rust
+// Read replica configuration
+use sqlx::{PgPool, postgres::PgPoolOptions};
+
+pub struct DatabaseConfig {
+    pub primary: PgPool,
+    pub replicas: Vec<PgPool>,
+}
+
+impl DatabaseConfig {
+    pub async fn new(primary_url: &str, replica_urls: &[String]) -> Result<Self, sqlx::Error> {
+        let primary = PgPoolOptions::new()
+            .max_connections(10)
+            .connect(primary_url)
+            .await?;
+            
+        let mut replicas = Vec::new();
+        for url in replica_urls {
+            let replica = PgPoolOptions::new()
+                .max_connections(5)
+                .connect(url)
+                .await?;
+            replicas.push(replica);
+        }
+        
+        Ok(Self { primary, replicas })
+    }
+    
+    pub fn get_read_pool(&self) -> &PgPool {
+        // Simple round-robin for read replicas
+        let index = rand::thread_rng().gen_range(0..self.replicas.len());
+        &self.replicas[index]
+    }
+}
+```
+
+## References
+
+- [PostgreSQL Documentation](https://www.postgresql.org/docs/)
+- [SQLx Documentation](https://docs.rs/sqlx/)
+- [PostgreSQL Performance Tuning](https://wiki.postgresql.org/wiki/Tuning_Your_PostgreSQL_Server)
+- [JSONB Performance](https://www.postgresql.org/docs/current/datatype-json.html)
+
+## Related ADRs
+
+- [ADR-002: Rust Backend Selection](./ADR-002-rust-backend-selection.md)
+- [ADR-008: Caching Strategy with Redis](./ADR-008-caching-strategy.md)
diff --git a/docs/ADR/README.md b/docs/ADR/README.md
new file mode 100644
index 00000000..d1aba6f2
--- /dev/null
+++ b/docs/ADR/README.md
@@ -0,0 +1,68 @@
+# Architecture Decision Records (ADRs)
+
+This directory contains Architecture Decision Records (ADRs) for the ChainLogistics project. ADRs capture important architectural decisions along with their context and consequences.
+
+## What is an ADR?
+
+An Architecture Decision Record (ADR) is a document that captures an important architectural decision made along with its context and consequences. Each ADR follows a standardized format to ensure consistency and clarity.
+
+## ADR Format
+
+Each ADR follows this structure:
+
+```markdown
+# ADR-XXX: [Title]
+
+## Status
+[Proposed | Accepted | Deprecated | Superseded]
+
+## Context
+[What is the issue that we're seeing that is motivating this decision or change?]
+
+## Decision
+[What is the change that we're proposing and/or doing?]
+
+## Consequences
+[What becomes easier or more difficult to do and any risks introduced by the change?]
+
+## Implementation
+[How was this decision implemented?]
+
+## References
+[Links to related documents, discussions, or resources]
+```
+
+## ADR Index
+
+| ADR | Title | Status | Date |
+|-----|-------|--------|------|
+| ADR-001 | Stellar Soroban Selection | Accepted | 2024-03-15 |
+| ADR-002 | Rust Backend Selection | Accepted | 2024-03-15 |
+| ADR-003 | PostgreSQL as Primary Database | Accepted | 2024-03-15 |
+| ADR-004 | Microservices Architecture | Accepted | 2024-03-15 |
+| ADR-005 | API-First Design | Accepted | 2024-03-15 |
+| ADR-006 | Event-Driven Architecture | Accepted | 2024-03-15 |
+| ADR-007 | Multi-Tenant Data Model | Accepted | 2024-03-15 |
+| ADR-008 | Caching Strategy with Redis | Accepted | 2024-03-15 |
+
+## How to Add a New ADR
+
+1. Create a new file named `ADR-XXX-title.md` (where XXX is the next number)
+2. Follow the ADR format template above
+3. Update this README with the new ADR in the index table
+4. Submit for review and discussion
+5. Once accepted, update the status to "Accepted"
+
+## ADR Lifecycle
+
+1. **Proposed**: Initial draft for discussion
+2. **Accepted**: Decision made and implemented
+3. **Deprecated**: Decision no longer relevant but kept for historical context
+4. **Superseded**: Replaced by a newer decision (reference the new ADR)
+
+## Review Process
+
+- ADRs should be reviewed by at least 2 senior developers
+- Major architectural decisions require team consensus
+- ADRs can be updated if circumstances change
+- Deprecated ADRs should explain why they were deprecated
diff --git a/docs/API.md b/docs/API.md
new file mode 100644
index 00000000..52233ce4
--- /dev/null
+++ b/docs/API.md
@@ -0,0 +1,619 @@
+# ChainLogistics API Documentation
+
+## Overview
+
+The ChainLogistics API provides comprehensive REST endpoints for managing supply chain products, tracking events, and accessing analytics data. This API is built with Rust/Axum for high performance and type safety.
+
+## Base URL
+
+- **Production**: `https://api.chainlogistics.io`
+- **Staging**: `https://staging-api.chainlogistics.io`
+- **Development**: `http://localhost:3001`
+
+## Authentication
+
+### API Key Authentication
+
+All API endpoints (except health checks) require authentication using an API key.
+
+**Header**: `X-API-Key: your-api-key-here`
+
+#### Getting an API Key
+
+1. Register at [ChainLogistics Portal](https://portal.chainlogistics.io)
+2. Navigate to API Keys section
+3. Generate a new key with appropriate tier
+
+#### API Key Tiers
+
+| Tier | Requests/Minute | Rate Limit | Features |
+|------|----------------|------------|----------|
+| Basic | 100 | 15-minute window | Read access |
+| Standard | 1000 | 15-minute window | Read + Write |
+| Enterprise | 10000 | 15-minute window | Full access + Webhooks |
+
+## Error Handling
+
+### Standard Error Response Format
+
+```json
+{
+  "error": "Error message description",
+  "code": "ERROR_CODE",
+  "statusCode": 400,
+  "timestamp": "2024-03-15T10:30:00Z",
+  "path": "/api/v1/products"
+}
+```
+
+### Common Error Codes
+
+| Code | Description | HTTP Status |
+|------|-------------|-------------|
+| `INVALID_API_KEY` | API key is invalid or expired | 401 |
+| `RATE_LIMIT_EXCEEDED` | Too many requests | 429 |
+| `PRODUCT_NOT_FOUND` | Product does not exist | 404 |
+| `UNAUTHORIZED_ACCESS` | Insufficient permissions | 403 |
+| `VALIDATION_ERROR` | Invalid request data | 400 |
+| `INTERNAL_ERROR` | Server error | 500 |
+
+## API Endpoints
+
+### Health Check Endpoints
+
+#### GET /health
+Check API server status.
+
+**Response:**
+```json
+{
+  "status": "healthy",
+  "timestamp": "2024-03-15T10:30:00Z",
+  "version": "1.0.0"
+}
+```
+
+#### GET /health/db
+Check database connectivity.
+
+**Response:**
+```json
+{
+  "status": "healthy",
+  "database": "connected",
+  "latency_ms": 5
+}
+```
+
+---
+
+### Products API
+
+#### GET /api/v1/products
+List all products with optional filtering and pagination.
+
+**Query Parameters:**
+- `offset` (integer, optional): Number of items to skip (default: 0)
+- `limit` (integer, optional): Maximum items to return (default: 20, max: 100)
+- `owner_address` (string, optional): Filter by owner wallet address
+- `category` (string, optional): Filter by product category
+- `is_active` (boolean, optional): Filter by active status
+- `search` (string, optional): Search in name and description
+
+**Example Request:**
+```bash
+curl -X GET "https://api.chainlogistics.io/api/v1/products?limit=10&category=coffee&is_active=true" \
+  -H "X-API-Key: your-api-key"
+```
+
+**Response:**
+```json
+{
+  "products": [
+    {
+      "id": "PROD-12345",
+      "name": "Ethiopian Single Origin Coffee",
+      "description": "Premium Arabica beans from Sidamo region",
+      "origin_location": "Sidamo, Ethiopia",
+      "category": "coffee",
+      "owner_address": "GABC...XYZ",
+      "created_at": "2024-03-15T10:00:00Z",
+      "updated_at": "2024-03-15T10:00:00Z",
+      "is_active": true,
+      "tags": ["organic", "fair-trade", "single-origin"],
+      "certifications": ["USDA Organic", "Fair Trade Certified"],
+      "media_hashes": ["QmHash1...", "QmHash2..."],
+      "custom_fields": {
+        "altitude": "1800m",
+        "processing_method": "washed"
+      }
+    }
+  ],
+  "pagination": {
+    "offset": 0,
+    "limit": 10,
+    "total": 150,
+    "has_more": true
+  }
+}
+```
+
+#### POST /api/v1/admin/products
+Create a new product (Admin only).
+
+**Request Body:**
+```json
+{
+  "id": "PROD-12345",
+  "name": "Ethiopian Single Origin Coffee",
+  "description": "Premium Arabica beans from Sidamo region",
+  "origin_location": "Sidamo, Ethiopia",
+  "category": "coffee",
+  "tags": ["organic", "fair-trade", "single-origin"],
+  "certifications": ["USDA Organic", "Fair Trade Certified"],
+  "media_hashes": ["QmHash1...", "QmHash2..."],
+  "custom_fields": {
+    "altitude": "1800m",
+    "processing_method": "washed"
+  }
+}
+```
+
+**Response:**
+```json
+{
+  "id": "PROD-12345",
+  "name": "Ethiopian Single Origin Coffee",
+  "description": "Premium Arabica beans from Sidamo region",
+  "origin_location": "Sidamo, Ethiopia",
+  "category": "coffee",
+  "owner_address": "GABC...XYZ",
+  "created_at": "2024-03-15T10:00:00Z",
+  "updated_at": "2024-03-15T10:00:00Z",
+  "is_active": true,
+  "tags": ["organic", "fair-trade", "single-origin"],
+  "certifications": ["USDA Organic", "Fair Trade Certified"],
+  "media_hashes": ["QmHash1...", "QmHash2..."],
+  "custom_fields": {
+    "altitude": "1800m",
+    "processing_method": "washed"
+  }
+}
+```
+
+#### GET /api/v1/products/{id}
+Get details of a specific product.
+
+**Path Parameters:**
+- `id` (string): Product ID
+
+**Response:** Same as individual product object in list response.
+
+#### PUT /api/v1/admin/products/{id}
+Update a product (Admin only).
+
+**Request Body:** All fields are optional.
+```json
+{
+  "name": "Updated Product Name",
+  "description": "Updated description",
+  "is_active": false
+}
+```
+
+#### DELETE /api/v1/admin/products/{id}
+Delete a product (Admin only).
+
+**Response:**
+```json
+{
+  "message": "Product deleted successfully",
+  "id": "PROD-12345"
+}
+```
+
+---
+
+### Events API
+
+#### GET /api/v1/events
+List all tracking events with optional filtering.
+
+**Query Parameters:**
+- `offset` (integer, optional): Number of items to skip
+- `limit` (integer, optional): Maximum items to return
+- `product_id` (string, optional): Filter by product ID
+- `event_type` (string, optional): Filter by event type
+
+**Example Request:**
+```bash
+curl -X GET "https://api.chainlogistics.io/api/v1/events?product_id=PROD-12345&limit=20" \
+  -H "X-API-Key: your-api-key"
+```
+
+**Response:**
+```json
+{
+  "events": [
+    {
+      "id": 1001,
+      "product_id": "PROD-12345",
+      "actor_address": "GDEF...ABC",
+      "timestamp": "2024-03-15T10:30:00Z",
+      "event_type": "HARVEST",
+      "location": "Sidamo, Ethiopia",
+      "data_hash": "0xabc123...",
+      "note": "Harvested premium Arabica beans",
+      "metadata": {
+        "quantity_kg": 500,
+        "quality_grade": "A",
+        "batch_number": "BATCH-001"
+      },
+      "created_at": "2024-03-15T10:30:00Z"
+    }
+  ],
+  "pagination": {
+    "offset": 0,
+    "limit": 20,
+    "total": 45,
+    "has_more": true
+  }
+}
+```
+
+#### POST /api/v1/admin/events
+Create a new tracking event (Admin only).
+
+**Request Body:**
+```json
+{
+  "product_id": "PROD-12345",
+  "actor_address": "GDEF...ABC",
+  "timestamp": "2024-03-15T10:30:00Z",
+  "event_type": "HARVEST",
+  "location": "Sidamo, Ethiopia",
+  "data_hash": "0xabc123...",
+  "note": "Harvested premium Arabica beans",
+  "metadata": {
+    "quantity_kg": 500,
+    "quality_grade": "A",
+    "batch_number": "BATCH-001"
+  }
+}
+```
+
+#### GET /api/v1/events/{id}
+Get details of a specific event.
+
+**Response:** Same as individual event object in list response.
+
+---
+
+### Statistics API
+
+#### GET /api/v1/stats
+Get platform statistics and analytics.
+
+**Response:**
+```json
+{
+  "products": {
+    "total": 1250,
+    "active": 1180,
+    "new_this_month": 85
+  },
+  "events": {
+    "total": 15420,
+    "today": 45,
+    "this_week": 312
+  },
+  "users": {
+    "total": 320,
+    "active_this_month": 180
+  },
+  "blockchain": {
+    "contract_address": "CBUWSKT2UGOAXK4ZREVDJV5XHSYB42PZ3CERU2ZFUTUMAZLJEHNZIECA",
+    "network": "stellar-testnet",
+    "total_transactions": 15420
+  }
+}
+```
+
+---
+
+### Financial API
+
+#### GET /api/v1/transactions
+List financial transactions.
+
+**Response:**
+```json
+{
+  "transactions": [
+    {
+      "id": "TXN-789",
+      "product_id": "PROD-12345",
+      "type": "payment",
+      "amount": 1500.00,
+      "currency": "USD",
+      "status": "completed",
+      "from_address": "GABC...XYZ",
+      "to_address": "GDEF...ABC",
+      "timestamp": "2024-03-15T10:30:00Z",
+      "blockchain_tx_hash": "0x123...abc"
+    }
+  ],
+  "pagination": {
+    "offset": 0,
+    "limit": 20,
+    "total": 850,
+    "has_more": true
+  }
+}
+```
+
+#### GET /api/v1/transactions/{id}
+Get details of a specific transaction.
+
+#### POST /api/v1/admin/transactions
+Create a new transaction (Admin only).
+
+#### POST /api/v1/admin/invoices
+Create a new invoice (Admin only).
+
+#### POST /api/v1/admin/financing/request
+Request supply chain financing (Admin only).
+
+---
+
+### Compliance API
+
+#### POST /api/v1/compliance/check
+Check compliance status for a product or batch.
+
+**Request Body:**
+```json
+{
+  "product_id": "PROD-12345",
+  "check_type": "certification",
+  "standards": ["USDA Organic", "Fair Trade"]
+}
+```
+
+**Response:**
+```json
+{
+  "product_id": "PROD-12345",
+  "compliance_status": "compliant",
+  "checks": [
+    {
+      "standard": "USDA Organic",
+      "status": "compliant",
+      "verified_at": "2024-03-15T10:30:00Z",
+      "certificate_id": "USDA-2024-12345"
+    },
+    {
+      "standard": "Fair Trade",
+      "status": "compliant",
+      "verified_at": "2024-03-15T10:30:00Z",
+      "certificate_id": "FT-2024-67890"
+    }
+  ],
+  "overall_score": 100
+}
+```
+
+#### GET /api/v1/compliance/report/{product_id}
+Get compliance report for a product.
+
+#### GET /api/v1/audit/report
+Generate comprehensive audit report.
+
+**Query Parameters:**
+- `start_date` (string): Start date (ISO 8601)
+- `end_date` (string): End date (ISO 8601)
+- `product_ids` (string, optional): Comma-separated product IDs
+- `format` (string, optional): Output format (json, csv, pdf)
+
+---
+
+### Analytics API
+
+#### GET /api/v1/analytics/dashboard
+Get analytics dashboard data.
+
+**Response:**
+```json
+{
+  "overview": {
+    "total_products": 1250,
+    "total_events": 15420,
+    "active_users": 180,
+    "compliance_rate": 94.5
+  },
+  "trends": {
+    "products_by_month": [
+      {"month": "2024-01", "count": 45},
+      {"month": "2024-02", "count": 62},
+      {"month": "2024-03", "count": 85}
+    ],
+    "events_by_type": {
+      "HARVEST": 3200,
+      "PROCESSING": 2800,
+      "SHIPPING": 4500,
+      "QUALITY_CHECK": 2100,
+      "RECEIVING": 2820
+    }
+  },
+  "geographic": {
+    "top_origins": [
+      {"location": "Ethiopia", "count": 320},
+      {"location": "Colombia", "count": 280},
+      {"location": "Guatemala", "count": 195}
+    ]
+  }
+}
+```
+
+#### GET /api/v1/analytics/products/{id}
+Get detailed analytics for a specific product.
+
+#### GET /api/v1/analytics/events
+Get event analytics and trends.
+
+#### GET /api/v1/analytics/users
+Get user analytics and engagement metrics.
+
+#### GET /api/v1/analytics/export
+Export analytics data.
+
+**Query Parameters:**
+- `type` (string): Data type to export
+- `format` (string): Export format (csv, json, xlsx)
+- `start_date` (string): Start date
+- `end_date` (string): End date
+
+---
+
+## Rate Limiting
+
+### Rate Limit Headers
+
+All API responses include rate limiting headers:
+
+```
+X-RateLimit-Limit: 1000
+X-RateLimit-Remaining: 950
+X-RateLimit-Reset: 1710504000
+```
+
+### Rate Limit Response
+
+When rate limit is exceeded:
+
+```json
+{
+  "error": "Rate limit exceeded",
+  "code": "RATE_LIMIT_EXCEEDED",
+  "statusCode": 429,
+  "retry_after": 300
+}
+```
+
+---
+
+## Webhooks
+
+### Setting Up Webhooks
+
+1. Contact support to configure webhook endpoints
+2. Provide webhook URL and event types
+3. Verify webhook signature using secret key
+
+### Webhook Events
+
+- `product.created`: New product registered
+- `event.created`: New tracking event added
+- `compliance.checked`: Compliance check completed
+- `transaction.completed`: Financial transaction processed
+
+### Webhook Payload Example
+
+```json
+{
+  "event": "product.created",
+  "timestamp": "2024-03-15T10:30:00Z",
+  "data": {
+    "product_id": "PROD-12345",
+    "name": "Ethiopian Coffee"
+  },
+  "signature": "sha256=5d41402abc4b2a76b9719d911017c592"
+}
+```
+
+---
+
+## SDKs and Libraries
+
+### Official SDKs
+
+- **Rust**: `cargo install chainlogistics-sdk`
+- **Python**: `pip install chainlogistics-sdk`
+- **JavaScript**: `npm install @chainlogistics/sdk`
+
+### Example Usage (JavaScript)
+
+```javascript
+import { ChainLogisticsAPI } from '@chainlogistics/sdk';
+
+const client = new ChainLogisticsAPI({
+  apiKey: 'your-api-key',
+  baseURL: 'https://api.chainlogistics.io'
+});
+
+// List products
+const products = await client.products.list({
+  category: 'coffee',
+  limit: 10
+});
+
+// Create product
+const product = await client.products.create({
+  id: 'PROD-12345',
+  name: 'Ethiopian Coffee',
+  category: 'coffee'
+});
+```
+
+---
+
+## Testing and Sandbox
+
+### Sandbox Environment
+
+- **URL**: `https://sandbox-api.chainlogistics.io`
+- **Features**: Full API functionality with test data
+- **Rate Limits**: Generous limits for testing
+
+### Test Data
+
+Use the sandbox environment with test API keys to:
+- Test product registration
+- Simulate supply chain events
+- Verify webhook delivery
+- Test compliance checks
+
+---
+
+## Support
+
+### Getting Help
+
+- **Documentation**: [docs.chainlogistics.io](https://docs.chainlogistics.io)
+- **API Reference**: Interactive docs at `/swagger-ui`
+- **Support Email**: api-support@chainlogistics.io
+- **Status Page**: [status.chainlogistics.io](https://status.chainlogistics.io)
+
+### Common Issues
+
+1. **401 Unauthorized**: Check API key is valid and not expired
+2. **429 Rate Limited**: Implement exponential backoff
+3. **404 Not Found**: Verify resource ID is correct
+4. **400 Bad Request**: Check request body format and required fields
+
+---
+
+## Changelog
+
+### v1.0.0 (2024-03-15)
+- Initial API release
+- Product and event management
+- Compliance checking
+- Analytics dashboard
+- Financial transactions
+
+### v1.1.0 (Planned)
+- Advanced filtering and search
+- Bulk operations
+- Enhanced analytics
+- Mobile app API endpoints
diff --git a/docs/ARCHITECTURE.md b/docs/ARCHITECTURE.md
new file mode 100644
index 00000000..dd10f98e
--- /dev/null
+++ b/docs/ARCHITECTURE.md
@@ -0,0 +1,626 @@
+# ChainLogistics Architecture Documentation
+
+## Overview
+
+ChainLogistics is a decentralized supply chain tracking platform built on a modern, scalable architecture. This document provides a comprehensive overview of the system architecture, components, data flows, and technical decisions.
+
+## High-Level Architecture
+
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                        Frontend Layer                          │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   Web App   │  │  Mobile App │  │      Admin Portal       │ │
+│  │  (Next.js)  │  │ (React Native)│  │     (Next.js)          │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                        API Gateway                             │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   Load      │  │   Rate      │  │      Authentication     │ │
+│  │  Balancer   │  │  Limiting   │  │       & AuthZ           │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                      Backend Services                          │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   Product   │  │    Event    │  │      Analytics          │ │
+│  │   Service   │  │   Service   │  │       Service           │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   User      │  │  Financial  │  │      Compliance         │ │
+│  │   Service   │  │   Service   │  │       Service           │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                    Data & Storage Layer                        │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │ PostgreSQL  │  │    Redis    │  │   IPFS/File Storage     │ │
+│  │ (Primary)   │  │  (Cache)    │  │   (Media Files)         │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+└─────────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────────┐
+│                    Blockchain Layer                            │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   Stellar   │  │  Soroban    │  │      Smart               │ │
+│  │   Network   │  │   Contracts │  │      Contracts           │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+## Technology Stack
+
+### Frontend
+
+**Web Application**
+- **Framework**: Next.js 15 with React 19
+- **Language**: TypeScript
+- **Styling**: TailwindCSS
+- **State Management**: React Context + Zustand
+- **UI Components**: shadcn/ui + Lucide Icons
+- **Blockchain Integration**: @stellar/stellar-sdk
+- **Wallet Support**: Freighter, Albedo, Rabet
+
+**Mobile Application** (Planned)
+- **Framework**: React Native
+- **Navigation**: React Navigation
+- **State Management**: Redux Toolkit
+- **Blockchain**: @stellar/stellar-sdk
+
+### Backend
+
+**API Server**
+- **Language**: Rust
+- **Framework**: Axum (async web framework)
+- **Database**: PostgreSQL with SQLx (type-safe queries)
+- **Caching**: Redis
+- **Authentication**: JWT + API Keys
+- **Rate Limiting**: Custom middleware
+- **Documentation**: utoipa (OpenAPI/Swagger)
+
+**Smart Contracts**
+- **Platform**: Stellar Soroban
+- **Language**: Rust
+- **Deployment**: Stellar Testnet/Mainnet
+
+### Infrastructure
+
+**Deployment**
+- **Containerization**: Docker
+- **Orchestration**: Docker Compose (Development), Kubernetes (Production)
+- **CI/CD**: GitHub Actions
+- **Monitoring**: Prometheus + Grafana
+- **Logging**: Structured logging with tracing
+
+**Data Storage**
+- **Primary Database**: PostgreSQL 14+
+- **Cache Layer**: Redis 6+
+- **File Storage**: IPFS (decentralized) + CDN backup
+- **Blockchain**: Stellar Network
+
+## Core Components
+
+### 1. Smart Contracts (Stellar Soroban)
+
+The smart contracts form the immutable backbone of the system:
+
+**Product Contract**
+```rust
+// Core product management
+struct Product {
+    id: String,
+    name: String,
+    origin: String,
+    owner: Address,
+    authorized_actors: Vec<Address>,
+    created_at: u64,
+}
+
+// Key functions
+- register_product()
+- get_product()
+- add_authorized_actor()
+- transfer_ownership()
+```
+
+**Event Contract**
+```rust
+// Tracking events
+struct TrackingEvent {
+    id: u64,
+    product_id: String,
+    actor: Address,
+    location: String,
+    event_type: String,
+    timestamp: u64,
+    metadata: String,
+}
+
+// Key functions
+- add_tracking_event()
+- get_tracking_events()
+- verify_event_chain()
+```
+
+### 2. Backend Services
+
+**Product Service**
+- Handles product CRUD operations
+- Manages product-state synchronization with blockchain
+- Provides search and filtering capabilities
+- Handles media file associations
+
+**Event Service**
+- Manages tracking event lifecycle
+- Validates event authenticity
+- Maintains event chronology
+- Provides event analytics
+
+**User Service**
+- User authentication and authorization
+- Role-based access control (RBAC)
+- API key management
+- User profile management
+
+**Financial Service**
+- Transaction processing
+- Invoice generation
+- Supply chain financing
+- Payment reconciliation
+
+**Compliance Service**
+- Regulatory compliance checking
+- Certification validation
+- Audit trail generation
+- Compliance reporting
+
+**Analytics Service**
+- Real-time metrics calculation
+- Trend analysis
+- Custom report generation
+- Data export functionality
+
+### 3. Frontend Application
+
+**Product Registration**
+- Multi-step product registration form
+- Bulk import capabilities
+- QR code generation
+- Document upload and verification
+
+**Supply Chain Tracking**
+- Interactive timeline visualization
+- Event filtering and search
+- Real-time updates
+- Map-based location tracking
+
+**Analytics Dashboard**
+- Real-time metrics display
+- Customizable widgets
+- Data visualization charts
+- Export capabilities
+
+**User Management**
+- Role-based interfaces
+- Permission management
+- Activity monitoring
+- Audit logs
+
+## Data Flow Architecture
+
+### 1. Product Registration Flow
+
+```
+┌─────────────┐    ┌─────────────┐    ┌─────────────┐    ┌─────────────┐
+│   Frontend  │───▶│   Backend   │───▶│  Database   │───▶│ Blockchain  │
+│   (Form)    │    │  (Service)  │    │ (PostgreSQL)│    │ (Soroban)   │
+└─────────────┘    └─────────────┘    └─────────────┘    └─────────────┘
+       │                   │                   │                   │
+       │                   │                   ▼                   │
+       │                   │            ┌─────────────┐          │
+       │                   │            │   Cache     │          │
+       │                   │            │   (Redis)   │          │
+       │                   │            └─────────────┘          │
+       │                   │                   │                   │
+       ▼                   ▼                   ▼                   ▼
+┌─────────────┐    ┌─────────────┐    ┌─────────────┐    ┌─────────────┐
+│   QR Code   │    │   Webhook   │    │   Events    │    │   Events    │
+│ Generation  │    │   Notify    │    │   Stream    │    │   Emitted   │
+└─────────────┘    └─────────────┘    └─────────────┘    └─────────────┘
+```
+
+### 2. Event Tracking Flow
+
+```
+┌─────────────┐    ┌─────────────┐    ┌─────────────┐    ┌─────────────┐
+│   Mobile    │───▶│   Backend   │───▶│ Validation  │───▶│ Blockchain  │
+│   App       │    │  (API)      │    │  Service    │    │ Transaction │
+└─────────────┘    └─────────────┘    └─────────────┘    └─────────────┘
+       │                   │                   │                   │
+       │                   │                   ▼                   │
+       │                   │            ┌─────────────┐          │
+       │                   │            │   AuthZ     │          │
+       │                   │            │   Check     │          │
+       │                   │            └─────────────┘          │
+       │                   │                   │                   │
+       ▼                   ▼                   ▼                   ▼
+┌─────────────┐    ┌─────────────┐    ┌─────────────┐    ┌─────────────┐
+│   Location  │    │   Real-time │    │   Cache     │    │   Events    │
+│   Services  │    │   Updates   │    │   Update    │    │   Emitted   │
+└─────────────┘    └─────────────┘    └─────────────┘    └─────────────┘
+```
+
+### 3. Data Synchronization
+
+**Blockchain ↔ Database Sync**
+- Event-driven synchronization
+- Conflict resolution strategies
+- Data consistency guarantees
+- Fallback mechanisms
+
+**Cache Invalidation**
+- Redis-based caching layer
+- Tag-based cache invalidation
+- Time-based expiration
+- Write-through cache strategy
+
+## Security Architecture
+
+### 1. Authentication & Authorization
+
+**Multi-Layer Security**
+```
+┌─────────────────────────────────────────────────────────────────┐
+│                    Security Layers                             │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   Network   │  │   API       │  │      Application        │ │
+│  │  Security   │  │  Security   │  │       Security          │ │
+│  │ (TLS/HTTPS) │  │ (Rate Limit)│  │    (RBAC/AuthZ)         │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+│  ┌─────────────┐  ┌─────────────┐  ┌─────────────────────────┐ │
+│  │   Data      │  │  Blockchain │  │      Infrastructure     │ │
+│  │ Encryption  │  │  Security   │  │       Security          │ │
+│  │ (At Rest)   │  │ (Cryptography)│  │   (Monitoring/Audit)    │ │
+│  └─────────────┘  └─────────────┘  └─────────────────────────┘ │
+└─────────────────────────────────────────────────────────────────┘
+```
+
+**Authentication Methods**
+- JWT tokens for web sessions
+- API keys for programmatic access
+- Wallet signatures for blockchain operations
+- Multi-factor authentication for admin access
+
+**Authorization Model**
+- Role-Based Access Control (RBAC)
+- Resource-level permissions
+- Time-based access controls
+- IP whitelisting for sensitive operations
+
+### 2. Data Protection
+
+**Encryption**
+- TLS 1.3 for all network communications
+- AES-256 encryption for sensitive data at rest
+- Hash-based data integrity verification
+- Zero-knowledge proofs for privacy-preserving verification
+
+**Privacy Features**
+- Personal data off-chain storage
+- Selective disclosure mechanisms
+- GDPR compliance features
+- Data anonymization options
+
+## Performance Architecture
+
+### 1. Scalability Design
+
+**Horizontal Scaling**
+- Stateless API services
+- Load balancer distribution
+- Database read replicas
+- Microservices architecture
+
+**Caching Strategy**
+- Multi-level caching (browser, CDN, application, database)
+- Redis cluster for distributed caching
+- Cache warming strategies
+- Intelligent cache invalidation
+
+### 2. Performance Optimizations
+
+**Database Optimizations**
+- Index optimization strategies
+- Query optimization
+- Connection pooling
+- Read/write splitting
+
+**API Optimizations**
+- Async request handling
+- Response compression
+- Pagination and cursor-based navigation
+- GraphQL for efficient data fetching (planned)
+
+## Monitoring & Observability
+
+### 1. Logging Strategy
+
+**Structured Logging**
+```rust
+// Example structured log entry
+{
+  "timestamp": "2024-03-15T10:30:00Z",
+  "level": "info",
+  "service": "product-service",
+  "request_id": "req_123456",
+  "user_id": "user_789",
+  "action": "product_created",
+  "product_id": "PROD-12345",
+  "duration_ms": 150,
+  "metadata": {
+    "category": "coffee",
+    "origin": "ethiopia"
+  }
+}
+```
+
+**Log Levels**
+- ERROR: System failures and exceptions
+- WARN: Performance issues and security events
+- INFO: Business events and state changes
+- DEBUG: Detailed debugging information
+- TRACE: Fine-grained execution tracing
+
+### 2. Metrics & Monitoring
+
+**Key Performance Indicators (KPIs)**
+- API response times (P50, P95, P99)
+- Database query performance
+- Cache hit rates
+- Blockchain transaction confirmation times
+- User engagement metrics
+
+**Monitoring Stack**
+- **Metrics Collection**: Prometheus
+- **Visualization**: Grafana
+- **Alerting**: AlertManager
+- **Distributed Tracing**: Jaeger
+- **Error Tracking**: Sentry
+
+### 3. Health Checks
+
+**Service Health Monitoring**
+```rust
+// Health check endpoints
+GET /health          // Overall system health
+GET /health/db       // Database connectivity
+GET /health/redis    // Cache connectivity
+GET /health/blockchain // Blockchain connectivity
+GET /health/external  // External service dependencies
+```
+
+## Deployment Architecture
+
+### 1. Container Strategy
+
+**Multi-Stage Docker Builds**
+```dockerfile
+# Example optimized Dockerfile
+FROM rust:1.70 as builder
+WORKDIR /app
+COPY . .
+RUN cargo build --release
+
+FROM debian:bookworm-slim
+RUN apt-get update && apt-get install -y ca-certificates
+COPY --from=builder /app/target/release/app /usr/local/bin/app
+EXPOSE 3001
+CMD ["app"]
+```
+
+### 2. Orchestration
+
+**Development Environment**
+- Docker Compose for local development
+- Hot reloading for frontend
+- Database seeding and migrations
+- Mock blockchain services
+
+**Production Environment**
+- Kubernetes cluster deployment
+- Helm charts for deployment management
+- Automated rolling updates
+- Blue-green deployment strategy
+
+### 3. CI/CD Pipeline
+
+**GitHub Actions Workflow**
+```yaml
+name: CI/CD Pipeline
+on: [push, pull_request]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - name: Run tests
+        run: cargo test
+      
+  build:
+    needs: test
+    runs-on: ubuntu-latest
+    steps:
+      - name: Build Docker image
+        run: docker build -t chainlogistics/api .
+      
+  deploy:
+    needs: build
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to production
+        run: kubectl apply -f k8s/
+```
+
+## Data Models
+
+### 1. Core Entities
+
+**Product Model**
+```sql
+CREATE TABLE products (
+    id VARCHAR(255) PRIMARY KEY,
+    name VARCHAR(500) NOT NULL,
+    description TEXT,
+    origin_location VARCHAR(500),
+    category VARCHAR(100),
+    owner_address VARCHAR(255) NOT NULL,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    updated_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    is_active BOOLEAN DEFAULT true,
+    metadata JSONB,
+    
+    -- Indexes for performance
+    INDEX idx_products_owner (owner_address),
+    INDEX idx_products_category (category),
+    INDEX idx_products_created (created_at),
+    INDEX idx_products_active (is_active)
+);
+```
+
+**Event Model**
+```sql
+CREATE TABLE tracking_events (
+    id BIGSERIAL PRIMARY KEY,
+    product_id VARCHAR(255) REFERENCES products(id),
+    actor_address VARCHAR(255) NOT NULL,
+    event_type VARCHAR(100) NOT NULL,
+    location VARCHAR(500),
+    timestamp TIMESTAMP WITH TIME ZONE NOT NULL,
+    data_hash VARCHAR(255),
+    note TEXT,
+    metadata JSONB,
+    created_at TIMESTAMP WITH TIME ZONE DEFAULT NOW(),
+    
+    -- Indexes for performance
+    INDEX idx_events_product (product_id),
+    INDEX idx_events_actor (actor_address),
+    INDEX idx_events_type (event_type),
+    INDEX idx_events_timestamp (timestamp)
+);
+```
+
+### 2. Relationships
+
+**Entity Relationship Diagram**
+```
+Products ──< Events ──< Users
+   │           │          │
+   │           │          │
+   ├─ Media    ├─ Compliance
+   │           │
+   └─ Certifications
+```
+
+## Integration Patterns
+
+### 1. External Integrations
+
+**Blockchain Integration**
+- Stellar Soroban smart contracts
+- Transaction monitoring
+- Event listening and processing
+- Multi-chain support (planned)
+
+**Third-Party Services**
+- Payment processors (Stripe, PayPal)
+- Shipping carriers (FedEx, UPS, DHL)
+- Certification authorities
+- Weather data services
+
+### 2. API Integration Patterns
+
+**Webhook Architecture**
+```rust
+// Webhook event structure
+struct WebhookEvent {
+    event_type: String,
+    timestamp: DateTime<Utc>,
+    data: serde_json::Value,
+    signature: String,
+}
+
+// Webhook delivery
+async fn deliver_webhook(
+    endpoint: &str,
+    event: WebhookEvent,
+    secret: &str
+) -> Result<(), WebhookError> {
+    // Implementation
+}
+```
+
+## Future Architecture Considerations
+
+### 1. Scalability Improvements
+
+**Planned Enhancements**
+- GraphQL API for efficient data fetching
+- Event sourcing for audit trails
+- CQRS pattern for read/write separation
+- Microservices decomposition
+
+### 2. Technology Evolution
+
+**Emerging Technologies**
+- Zero-knowledge proof implementations
+- AI/ML for fraud detection
+- IoT device integration
+- Cross-chain interoperability
+
+### 3. Compliance & Regulation
+
+**Regulatory Compliance**
+- GDPR data protection
+- Supply chain regulations
+- Food safety standards
+- Environmental compliance
+
+## Architecture Decision Records (ADRs)
+
+### ADR-001: Stellar Soroban Selection
+**Decision**: Chose Stellar Soroban over Ethereum for smart contracts
+**Rationale**: Lower transaction costs, faster finality, energy efficiency
+**Consequences**: Limited developer ecosystem, specialized knowledge required
+
+### ADR-002: Rust Backend Selection
+**Decision**: Selected Rust with Axum framework for backend services
+**Rationale**: Performance, memory safety, async capabilities
+**Consequences**: Steeper learning curve, longer development time
+
+### ADR-003: PostgreSQL as Primary Database
+**Decision**: PostgreSQL over NoSQL alternatives
+**Rationale**: ACID compliance, JSON support, reliability
+**Consequences**: Schema migration complexity, vertical scaling limits
+
+---
+
+## Conclusion
+
+The ChainLogistics architecture is designed to be:
+- **Scalable**: Horizontal scaling capabilities
+- **Secure**: Multi-layer security approach
+- **Performant**: Optimized for high throughput
+- **Maintainable**: Clean architecture and documentation
+- **Extensible**: Plugin architecture for future growth
+
+This architecture provides a solid foundation for building a robust, decentralized supply chain tracking platform that can scale to meet enterprise demands while maintaining the core principles of transparency and trust.
diff --git a/docs/BACKUP_STRATEGY.md b/docs/BACKUP_STRATEGY.md
new file mode 100644
index 00000000..cfe95300
--- /dev/null
+++ b/docs/BACKUP_STRATEGY.md
@@ -0,0 +1,570 @@
+# Backup Strategy for ChainLogistics
+
+## Overview
+
+This document outlines the automated backup strategy for the ChainLogistics platform, ensuring data safety, business continuity, and compliance with data protection standards.
+
+## Backup Objectives
+
+- **RPO (Recovery Point Objective)**: Maximum 1 hour of data loss
+- **RTO (Recovery Time Objective)**: Maximum 4 hours to restore operations
+- **Data Retention**: 30 days of daily backups, 12 months of weekly backups
+- **Compliance**: GDPR, data protection regulations
+
+## Backup Scope
+
+### Critical Data
+
+1. **Database**
+   - Product information and metadata
+   - Event tracking data
+   - User authentication credentials
+   - Blockchain transaction records
+   - Analytics and reporting data
+
+2. **Blockchain Data**
+   - Smart contract state
+   - Transaction logs
+   - Event history
+
+3. **Application Configuration**
+   - Environment configurations
+   - Deployment manifests
+   - SSL certificates
+   - API keys and secrets (encrypted)
+
+4. **User Data**
+   - User profiles and preferences
+   - Wallet addresses and balances
+   - Transaction history
+
+### Non-Critical Data
+
+- Cache data (can be rebuilt)
+- Temporary files
+- Build artifacts
+- Log files (retained separately)
+
+## Backup Architecture
+
+### Multi-Layer Backup Strategy
+
+```
+┌─────────────────────────────────────────────────┐
+│          Production Environment                  │
+│  ┌──────────────────────────────────────────┐   │
+│  │       Primary Database (PostgreSQL)       │   │
+│  └──────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────┘
+           │                   │
+           ↓                   ↓
+    ┌─────────────┐    ┌──────────────────────┐
+    │ Point-in-   │    │  Continuous          │
+    │ Time        │    │  Replication (WAL)   │
+    │ Snapshots   │    │  to Backup DB        │
+    └─────────────┘    └──────────────────────┘
+           │                   │
+           ↓                   ↓
+    ┌──────────────────────────────────────────┐
+    │    AWS S3 / Cloud Storage (Encrypted)    │
+    │  - Hourly incremental backups            │
+    │  - Daily full backups                    │
+    │  - Versioning enabled                    │
+    │  - Cross-region replication              │
+    └──────────────────────────────────────────┘
+```
+
+### Backup Types
+
+#### 1. Full Backups
+- **Frequency**: Daily at 2:00 AM UTC
+- **Duration**: ~30-45 minutes
+- **Retention**: 30 days
+- **Compression**: gzip + encryption (AES-256)
+- **Location**: Primary cloud region + secondary region (replicated)
+
+#### 2. Incremental Backups
+- **Frequency**: Every 4 hours (6 per day)
+- **Duration**: ~5-10 minutes
+- **Retention**: 30 days
+- **Based on**: Transaction logs (WAL)
+- **Size**: Typically 50-100 MB
+
+#### 3. Continuous Replication
+- **Type**: Streaming replication to standby database
+- **Lag**: < 1 second
+- **Location**: Same region, different availability zone
+- **Purpose**: Immediate failover capability
+
+#### 4. Archive Backups
+- **Frequency**: Weekly snapshots
+- **Retention**: 12 months
+- **Location**: Separate cold storage (lower cost)
+- **Purpose**: Long-term compliance and audit
+
+## Backup Implementation
+
+### Prerequisites
+
+```bash
+# Required tools
+- aws-cli >= 2.0 (for S3 backups)
+- pg_dump/pg_basebackup (PostgreSQL utilities)
+- Docker (for containerized backup service)
+- Kubernetes (for orchestration)
+- GPG (for encryption)
+```
+
+### Automated Backup Service
+
+#### Docker Image Setup
+
+```dockerfile
+FROM postgres:16-alpine
+
+RUN apk add --no-cache \
+    aws-cli \
+    postgresql-client \
+    bash \
+    curl \
+    gpg
+
+COPY backup.sh /usr/local/bin/backup.sh
+RUN chmod +x /usr/local/bin/backup.sh
+
+ENTRYPOINT ["bash", "/usr/local/bin/backup.sh"]
+```
+
+#### Backup Script (`scripts/backup.sh`)
+
+```bash
+#!/bin/bash
+
+set -e
+
+# Configuration
+BACKUP_DIR="/backups"
+S3_BUCKET="${BACKUP_BUCKET:-chain-logistics-backups}"
+DB_HOST="${DB_HOST:-postgres}"
+DB_USER="${DB_USER:-postgres}"
+DB_NAME="${DB_NAME:-chainlogistics}"
+RETENTION_DAYS=30
+ARCHIVE_RETENTION_DAYS=365
+
+# Logging
+LOG_FILE="/var/log/backup.log"
+log() {
+    echo "[$(date +'%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
+}
+
+# Create backup directory
+mkdir -p "$BACKUP_DIR"
+
+# Generate backup filename with timestamp
+TIMESTAMP=$(date +'%Y%m%d_%H%M%S')
+BACKUP_FILE="$BACKUP_DIR/backup_${TIMESTAMP}.sql.gz"
+MANIFEST_FILE="$BACKUP_DIR/backup_${TIMESTAMP}.manifest"
+
+log "Starting backup: $BACKUP_FILE"
+
+# Perform full database backup
+pg_dump \
+    -h "$DB_HOST" \
+    -U "$DB_USER" \
+    -d "$DB_NAME" \
+    --format=custom \
+    --verbose \
+    --file="$BACKUP_DIR/backup_${TIMESTAMP}.dump" \
+    2>&1 | tee -a "$LOG_FILE"
+
+# Compress backup
+log "Compressing backup..."
+gzip -9 "$BACKUP_DIR/backup_${TIMESTAMP}.dump"
+
+# Encrypt backup (optional, for sensitive environments)
+if [ -n "$BACKUP_ENCRYPTION_KEY" ]; then
+    log "Encrypting backup..."
+    gpg --symmetric \
+        --cipher-algo AES256 \
+        --batch --yes \
+        --passphrase "$BACKUP_ENCRYPTION_KEY" \
+        "$BACKUP_FILE"
+    rm "$BACKUP_FILE"
+    BACKUP_FILE="${BACKUP_FILE}.gpg"
+fi
+
+# Calculate checksum
+CHECKSUM=$(sha256sum "$BACKUP_FILE" | awk '{print $1}')
+log "Backup checksum: $CHECKSUM"
+
+# Create manifest
+cat > "$MANIFEST_FILE" << EOF
+{
+  "timestamp": "$(date -Iseconds)",
+  "filename": "$(basename "$BACKUP_FILE")",
+  "checksum_sha256": "$CHECKSUM",
+  "size_bytes": $(stat -f%z "$BACKUP_FILE" 2>/dev/null || stat -c%s "$BACKUP_FILE"),
+  "database": "$DB_NAME",
+  "backup_type": "full",
+  "retention_days": $RETENTION_DAYS,
+  "status": "completed"
+}
+EOF
+
+# Upload to S3 with encryption
+log "Uploading to S3..."
+aws s3 cp "$BACKUP_FILE" \
+    "s3://${S3_BUCKET}/backups/$(date +%Y/%m)/$BACKUP_FILE" \
+    --sse AES256 \
+    --storage-class STANDARD_IA \
+    2>&1 | tee -a "$LOG_FILE"
+
+aws s3 cp "$MANIFEST_FILE" \
+    "s3://${S3_BUCKET}/manifests/$(date +%Y/%m)/$MANIFEST_FILE" \
+    --sse AES256 \
+    2>&1 | tee -a "$LOG_FILE"
+
+# Enable versioning on S3 bucket
+aws s3api put-bucket-versioning \
+    --bucket "$S3_BUCKET" \
+    --versioning-configuration Status=Enabled
+
+# Clean up local files
+rm "$BACKUP_FILE" "$MANIFEST_FILE"
+log "Backup completed successfully"
+```
+
+### Kubernetes CronJob
+
+```yaml
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: database-backup
+  namespace: production
+spec:
+  # Daily at 2 AM UTC
+  schedule: "0 2 * * *"
+  jobTemplate:
+    spec:
+      backoffLimit: 3
+      template:
+        spec:
+          serviceAccountName: backup-service
+          containers:
+          - name: backup
+            image: chainlogistics/backup:latest
+            imagePullPolicy: Always
+            env:
+            - name: DB_HOST
+              value: postgres-service
+            - name: DB_USER
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-credentials
+                  key: username
+            - name: DB_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-credentials
+                  key: password
+            - name: DB_NAME
+              value: chainlogistics
+            - name: BACKUP_BUCKET
+              value: chain-logistics-backups
+            - name: AWS_REGION
+              value: us-east-1
+            - name: AWS_ACCESS_KEY_ID
+              valueFrom:
+                secretKeyRef:
+                  name: aws-credentials
+                  key: access-key-id
+            - name: AWS_SECRET_ACCESS_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: aws-credentials
+                  key: secret-access-key
+            resources:
+              requests:
+                memory: "512Mi"
+                cpu: "500m"
+              limits:
+                memory: "2Gi"
+                cpu: "1000m"
+          restartPolicy: OnFailure
+```
+
+### Incremental Backups (4-hourly)
+
+```yaml
+apiVersion: batch/v1
+kind: CronJob
+metadata:
+  name: database-backup-incremental
+  namespace: production
+spec:
+  # Every 4 hours
+  schedule: "0 */4 * * *"
+  jobTemplate:
+    spec:
+      template:
+        spec:
+          serviceAccountName: backup-service
+          containers:
+          - name: backup
+            image: chainlogistics/backup:latest
+            imagePullPolicy: Always
+            command: ["/usr/local/bin/backup-incremental.sh"]
+            # ... env vars same as above
+```
+
+## Backup Verification
+
+### Automated Verification
+
+```bash
+#!/bin/bash
+
+# Verify backup integrity
+verify_backup() {
+    BACKUP_FILE=$1
+    
+    # Check file exists and has content
+    if [ ! -f "$BACKUP_FILE" ] || [ ! -s "$BACKUP_FILE" ]; then
+        return 1
+    fi
+    
+    # Verify checksum
+    if [ -f "${BACKUP_FILE}.sha256" ]; then
+        sha256sum -c "${BACKUP_FILE}.sha256" || return 1
+    fi
+    
+    # Test backup integrity (decompress without extraction)
+    gzip -t "$BACKUP_FILE" || return 1
+    
+    return 0
+}
+
+# Weekly restoration test
+test_restore() {
+    BACKUP_FILE=$1
+    TEST_DB="chainlogistics_test"
+    
+    # Create test database
+    createdb -T template0 "$TEST_DB"
+    
+    # Restore from backup
+    pg_restore --dbname="$TEST_DB" "$BACKUP_FILE" || {
+        dropdb "$TEST_DB"
+        return 1
+    }
+    
+    # Verify database integrity
+    psql -d "$TEST_DB" -c "SELECT COUNT(*) FROM products;" || {
+        dropdb "$TEST_DB"
+        return 1
+    }
+    
+    # Cleanup
+    dropdb "$TEST_DB"
+    return 0
+}
+```
+
+### Manual Verification Checklist
+
+- ✅ Backup file exists and has appropriate size
+- ✅ Checksum verification passes
+- ✅ File can be decompressed without errors
+- ✅ Test restore to separate database succeeds
+- ✅ Restored data matches production snapshots
+- ✅ S3 storage shows file with correct size
+- ✅ CloudWatch logs show successful backup
+
+## Disaster Recovery Testing
+
+### Monthly DR Test
+
+**Objective**: Verify backup restoration and RTO/RPO targets
+
+```bash
+#!/bin/bash
+
+# Monthly disaster recovery test
+# Schedule: First Sunday of each month at 3:00 AM
+
+# 1. Create snapshot from latest backup
+# 2. Provision temporary database from snapshot
+# 3. Run data validation queries
+# 4. Measure restoration time
+# 5. Generate DR test report
+# 6. Cleanup temporary resources
+
+TEST_DATE=$(date +'%Y-%m-%d')
+REPORT_FILE="dr-test-${TEST_DATE}.log"
+
+log "Starting monthly DR test..."
+
+# Get latest backup
+LATEST_BACKUP=$(aws s3 ls s3://chain-logistics-backups/backups/ \
+    --recursive --sort=modified | tail -1 | awk '{print $NF}')
+
+# Measure restore time
+START_TIME=$(date +%s)
+pg_restore --dbname="chainlogistics_dr_test" "$LATEST_BACKUP"
+END_TIME=$(date +%s)
+RESTORE_TIME=$((END_TIME - START_TIME))
+
+echo "Restoration Time: ${RESTORE_TIME} seconds" >> "$REPORT_FILE"
+echo "RPO Target: 1 hour - $([ $RESTORE_TIME -lt 3600 ] && echo 'PASS' || echo 'FAIL')" >> "$REPORT_FILE"
+echo "RTO Target: 4 hours - $([ $RESTORE_TIME -lt 14400 ] && echo 'PASS' || echo 'FAIL')" >> "$REPORT_FILE"
+
+# Data validation
+log "Running data validation..."
+psql -d chainlogistics_dr_test << SQL >> "$REPORT_FILE"
+SELECT COUNT(*) as product_count FROM products;
+SELECT COUNT(*) as event_count FROM events;
+SELECT MAX(created_at) as latest_event FROM events;
+SQL
+
+# Cleanup
+dropdb chainlogistics_dr_test
+
+log "DR test completed"
+```
+
+### Quarterly Full Disaster Recovery Exercise
+
+- Complete outage simulation
+- Full failover to backup systems
+- Measure actual RTO/RPO
+- Document lessons learned
+- Update recovery procedures
+
+## Backup Retention Policy
+
+| Backup Type | Frequency | Retention | Location | Purpose |
+|-------------|-----------|-----------|----------|---------|
+| Full | Daily | 30 days | Primary + Secondary Region | Current data protection |
+| Incremental | Every 4 hours | 30 days | Primary Region | Point-in-time recovery |
+| Weekly Archive | Weekly | 12 months | Cold Storage | Compliance & audit |
+| Point-in-Time | Continuous | 7 days | Streaming Replication | Immediate failover |
+
+### Retention Cleanup
+
+```sql
+-- Remove backups older than 30 days
+aws s3 ls s3://chain-logistics-backups/backups/ \
+    --recursive \
+    --query "Contents[?LastModified<='$(date -d '30 days ago' -Iseconds)']" \
+    | xargs -I {} aws s3 rm "s3://chain-logistics-backups/{}"
+
+-- Archive weekly backups to Glacier
+aws s3api put-bucket-lifecycle-configuration \
+    --bucket chain-logistics-backups \
+    --lifecycle-configuration file://lifecycle-policy.json
+```
+
+## Backup Monitoring and Alerting
+
+### CloudWatch Metrics
+
+```python
+import boto3
+
+cloudwatch = boto3.client('cloudwatch')
+
+def publish_backup_metrics(backup_size, restore_time, success):
+    cloudwatch.put_metric_data(
+        Namespace='ChainLogistics/Backups',
+        MetricData=[
+            {
+                'MetricName': 'BackupSize',
+                'Value': backup_size,
+                'Unit': 'Bytes'
+            },
+            {
+                'MetricName': 'RestoreTime',
+                'Value': restore_time,
+                'Unit': 'Seconds'
+            },
+            {
+                'MetricName': 'BackupStatus',
+                'Value': 1 if success else 0
+            }
+        ]
+    )
+```
+
+### Alert Conditions
+
+- ⚠️ Backup duration > 60 minutes
+- ⚠️ Backup size increase > 50% from baseline
+- ❌ Backup failed (retry and alert)
+- ❌ S3 upload failed
+- ❌ Verification test failed
+- ❌ No backup in last 24 hours
+
+## Security Considerations
+
+### Encryption
+
+- **In Transit**: HTTPS/TLS for all S3 transfers
+- **At Rest**: AES-256 encryption for S3 objects
+- **Database**: SSL connection to PostgreSQL
+
+### Access Control
+
+```yaml
+# IAM Policy for Backup Service
+{
+  "Version": "2012-10-17",
+  "Statement": [
+    {
+      "Effect": "Allow",
+      "Action": [
+        "s3:PutObject",
+        "s3:GetObject",
+        "s3:ListBucket"
+      ],
+      "Resource": [
+        "arn:aws:s3:::chain-logistics-backups/*",
+        "arn:aws:s3:::chain-logistics-backups"
+      ]
+    }
+  ]
+}
+```
+
+### Credential Management
+
+- Store credentials in Kubernetes Secrets
+- Rotate credentials quarterly
+- Use IAM roles when possible
+- Never commit credentials to git
+
+## Backup Costs
+
+### Estimated Monthly Costs
+
+| Component | Size/Count | Cost |
+|-----------|-----------|------|
+| S3 Storage (30 daily backups) | 300 GB | ~$7 |
+| S3 Storage (12 monthly archives) | 1.2 TB | ~$20 |
+| Data Transfer | 300 GB/month | ~$25 |
+| Replication | 300 GB | ~$6 |
+| **Total** | | ~$58 |
+
+### Cost Optimization
+
+- Use S3 Intelligent-Tiering
+- Enable S3 lifecycle policies
+- Delete old verification test restores
+- Monitor backup growth trends
+
+## References
+
+- [AWS RDS Backups](https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_BackupRestore.html)
+- [PostgreSQL Backup Best Practices](https://www.postgresql.org/docs/current/backup.html)
+- [RPO and RTO Definitions](https://en.wikipedia.org/wiki/Disaster_recovery#RPO_and_RTO)
+
diff --git a/docs/COMPLIANCE_FRAMEWORK.md b/docs/COMPLIANCE_FRAMEWORK.md
new file mode 100644
index 00000000..a84eaa56
--- /dev/null
+++ b/docs/COMPLIANCE_FRAMEWORK.md
@@ -0,0 +1,356 @@
+# Supply Chain Compliance Framework
+
+## Overview
+
+ChainLogistics includes a comprehensive compliance framework supporting multiple regulatory standards. This enables the platform to serve regulated industries including pharmaceuticals, food safety, financial products, and conflict minerals.
+
+## Supported Compliance Standards
+
+### GDPR (General Data Protection Regulation)
+
+**Scope**: EU data protection and privacy
+
+**Requirements**:
+- Data residency in EU data centers
+- User consent for data processing
+- Right to be forgotten implementation
+- Data export capabilities
+- Privacy by design
+
+**Validation Rules**:
+- `data_location == 'EU'`
+- `consent` field required
+- `right_to_be_forgotten_enabled` flag
+
+### FDA 21 CFR Part 11
+
+**Scope**: Electronic records and signatures for pharmaceuticals
+
+**Requirements**:
+- Digital signatures on all records
+- Signer identification and authentication
+- Timestamp on all records
+- Audit trail of all changes
+- System validation and controls
+
+**Validation Rules**:
+- `digital_signature` required
+- `signer_id` required
+- `timestamp` required
+- Immutable audit trail
+
+### FSMA (Food Safety Modernization Act)
+
+**Scope**: Food traceability and safety
+
+**Requirements**:
+- Complete traceability from farm to table
+- Mandatory record retention (25 years)
+- Supplier verification
+- Hazard analysis
+- Preventive controls
+
+**Validation Rules**:
+- `origin` required
+- `processing_steps` required
+- `distribution` required
+- Complete chain of custody
+
+### Conflict Minerals Regulation
+
+**Scope**: Conflict-free mineral sourcing
+
+**Requirements**:
+- Due diligence on mineral sources
+- Third-party audit verification
+- Conflict-free certification
+- Supply chain transparency
+- Annual reporting
+
+**Validation Rules**:
+- `mineral_source` required
+- `audit_report` required
+- `verified_by_auditor` flag
+- Audit trail of verification
+
+### Organic Certification
+
+**Scope**: Organic product verification
+
+**Requirements**:
+- Valid organic certification
+- Certification body verification
+- Annual recertification
+- Prohibited substance tracking
+- Traceability of organic inputs
+
+**Validation Rules**:
+- `certification_body` required
+- `cert_expiry` required and not expired
+- Warning if expiring within 90 days
+
+## API Endpoints
+
+### Check Compliance
+
+```bash
+POST /api/v1/compliance/check
+Content-Type: application/json
+
+{
+  "compliance_type": "gdpr",
+  "data": {
+    "data_location": "EU",
+    "consent": true,
+    "right_to_be_forgotten_enabled": true
+  }
+}
+```
+
+Response:
+```json
+{
+  "is_compliant": true,
+  "compliance_type": "gdpr",
+  "violations": [],
+  "warnings": []
+}
+```
+
+### Get Compliance Report
+
+```bash
+GET /api/v1/compliance/report/:product_id
+```
+
+Response:
+```json
+{
+  "product_id": "uuid",
+  "compliance_checks": [
+    {
+      "type": "gdpr",
+      "is_compliant": true,
+      "violations": [],
+      "warnings": []
+    }
+  ],
+  "overall_status": "compliant"
+}
+```
+
+### Generate Audit Report
+
+```bash
+GET /api/v1/audit/report
+```
+
+Response:
+```json
+{
+  "report_type": "audit",
+  "generated_at": "2024-01-01T00:00:00Z",
+  "total_events": 1000,
+  "events": [
+    {
+      "id": "uuid",
+      "user_id": "uuid",
+      "action": "data_access",
+      "resource_type": "product",
+      "resource_id": "uuid",
+      "timestamp": 1704067200,
+      "ip_address": "192.168.1.1"
+    }
+  ]
+}
+```
+
+## Database Schema
+
+### compliance_records
+
+```sql
+CREATE TABLE compliance_records (
+  id UUID PRIMARY KEY,
+  user_id UUID NOT NULL,
+  product_id UUID,
+  compliance_type VARCHAR(100),
+  status VARCHAR(50), -- 'pending', 'compliant', 'non_compliant', 'exempted'
+  validation_data JSONB,
+  audit_trail JSONB,
+  created_at TIMESTAMP,
+  updated_at TIMESTAMP,
+  verified_at TIMESTAMP
+);
+```
+
+### audit_logs
+
+```sql
+CREATE TABLE audit_logs (
+  id UUID PRIMARY KEY,
+  user_id UUID,
+  action VARCHAR(255),
+  resource_type VARCHAR(100),
+  resource_id UUID,
+  changes JSONB,
+  ip_address INET,
+  user_agent TEXT,
+  created_at TIMESTAMP
+);
+```
+
+## Data Retention Policies
+
+| Standard | Retention Period | Purpose |
+|----------|------------------|---------|
+| GDPR | 7 years | Legal compliance |
+| FDA 21 CFR 11 | 10 years | Regulatory requirement |
+| FSMA | 25 years | Food safety traceability |
+| Conflict Minerals | 5 years | Supply chain verification |
+| Organic Certification | 3 years | Certification validity |
+| SOC 2 | 3 years | Security audit trail |
+| ISO 27001 | 3 years | Information security |
+
+## Compliance Validator
+
+### Usage
+
+```rust
+use crate::compliance::{ComplianceValidator, ComplianceRule};
+
+let rule = ComplianceRule::gdpr_data_residency();
+let result = ComplianceValidator::validate(&rule, &data);
+
+if result.is_compliant {
+    println!("Compliant!");
+} else {
+    for violation in result.violations {
+        println!("Violation: {}", violation);
+    }
+}
+```
+
+### Validation Result
+
+```rust
+pub struct ValidationResult {
+    pub is_compliant: bool,
+    pub compliance_type: ComplianceType,
+    pub violations: Vec<String>,
+    pub warnings: Vec<String>,
+}
+```
+
+## Audit Logger
+
+### Log Data Access
+
+```rust
+use crate::compliance::AuditLogger;
+
+let entry = AuditLogger::log_data_access(
+    user_id,
+    resource_id,
+    Some("192.168.1.1".to_string()),
+);
+```
+
+### Log Data Modification
+
+```rust
+let entry = AuditLogger::log_data_modification(
+    user_id,
+    resource_id,
+    serde_json::json!({
+        "field": "status",
+        "old_value": "active",
+        "new_value": "inactive"
+    }),
+);
+```
+
+### Log Data Deletion
+
+```rust
+let entry = AuditLogger::log_data_deletion(user_id, resource_id);
+```
+
+## Frontend Components
+
+### ComplianceChecker
+
+Check compliance status:
+
+```tsx
+import { ComplianceChecker } from '@/components/compliance/ComplianceChecker';
+
+<ComplianceChecker />
+```
+
+## Implementation Checklist
+
+- [ ] Enable GDPR compliance checks
+- [ ] Enable FDA 21 CFR Part 11 validation
+- [ ] Enable FSMA traceability requirements
+- [ ] Enable Conflict Minerals verification
+- [ ] Enable Organic Certification validation
+- [ ] Configure data retention policies
+- [ ] Set up audit logging
+- [ ] Configure compliance reporting
+- [ ] Train staff on compliance procedures
+- [ ] Schedule regular compliance audits
+
+## Compliance Reporting
+
+### Monthly Compliance Report
+
+```bash
+GET /api/v1/compliance/report/monthly
+```
+
+### Annual Audit Report
+
+```bash
+GET /api/v1/audit/report/annual
+```
+
+### Regulatory Export
+
+```bash
+GET /api/v1/compliance/export/:standard
+```
+
+## Troubleshooting
+
+### Compliance Check Failures
+
+1. Verify all required fields are present
+2. Check data format matches requirements
+3. Review validation rules for standard
+4. Check audit trail for issues
+
+### Missing Audit Logs
+
+1. Verify audit logging is enabled
+2. Check database connectivity
+3. Review log retention policies
+4. Check for log rotation issues
+
+### Certification Expiry
+
+1. Set up expiry notifications
+2. Plan recertification timeline
+3. Update compliance records
+4. Notify stakeholders
+
+## Best Practices
+
+1. **Regular Audits**: Conduct compliance audits quarterly
+2. **Documentation**: Maintain detailed compliance documentation
+3. **Training**: Train staff on compliance requirements
+4. **Monitoring**: Monitor compliance status continuously
+5. **Reporting**: Generate regular compliance reports
+6. **Updates**: Stay current with regulatory changes
+7. **Testing**: Test compliance controls regularly
+8. **Incident Response**: Have incident response plan ready
diff --git a/docs/CONFIG_AND_LOGGING_OPERATIONS.md b/docs/CONFIG_AND_LOGGING_OPERATIONS.md
new file mode 100644
index 00000000..5c6f5142
--- /dev/null
+++ b/docs/CONFIG_AND_LOGGING_OPERATIONS.md
@@ -0,0 +1,45 @@
+# Configuration and Logging Operations
+
+## Environment Configuration Management
+
+Backend configuration is now managed as code with profile-based files:
+
+- `backend/config/default.toml`
+- `backend/config/development.toml`
+- `backend/config/production.toml`
+
+Runtime profile is selected via `CHAINLOGISTICS_ENV` (fallback: `APP_ENV`).
+
+Environment overrides support nested keys using:
+
+- `CHAINLOGISTICS__<SECTION>__<KEY>=<value>`
+
+Examples:
+
+- `CHAINLOGISTICS__SERVER__PORT=3001`
+- `CHAINLOGISTICS__SECURITY__ENFORCE_HTTPS=true`
+
+Validation is enforced during startup for:
+
+- non-empty `database.url` and `redis.url`
+- `jwt_secret` minimum length
+- `encryption_key` exact length (32)
+- TLS cert/key required when `tls_enabled=true`
+
+## Centralized Log Aggregation
+
+`docker-compose.yml` includes:
+
+- `loki` for centralized log storage
+- `promtail` for log shipping
+- `grafana` datasource for Loki log analysis
+
+Structured logging is enforced in backend via JSON logs by default:
+
+- `LOG_FORMAT=json` (default)
+- `LOG_FORMAT=pretty` for local human-readable output
+
+Retention policy is defined in Loki config:
+
+- `docker/loki/loki-config.yaml`
+- `limits_config.retention_period: 720h` (30 days)
diff --git a/docs/DEPLOYMENT_GUIDE.md b/docs/DEPLOYMENT_GUIDE.md
new file mode 100644
index 00000000..9e2a8b6f
--- /dev/null
+++ b/docs/DEPLOYMENT_GUIDE.md
@@ -0,0 +1,1090 @@
+# ChainLogistics Deployment Guide
+
+## Overview
+
+This comprehensive guide covers deploying ChainLogistics to various environments including development, staging, and production. The platform consists of multiple components that need to be deployed and configured correctly.
+
+## Table of Contents
+
+1. [Prerequisites](#prerequisites)
+2. [Architecture Overview](#architecture-overview)
+3. [Environment Setup](#environment-setup)
+4. [Database Deployment](#database-deployment)
+5. [Backend Deployment](#backend-deployment)
+6. [Frontend Deployment](#frontend-deployment)
+7. [Smart Contract Deployment](#smart-contract-deployment)
+8. [Infrastructure Setup](#infrastructure-setup)
+9. [Monitoring & Logging](#monitoring--logging)
+10. [Security Configuration](#security-configuration)
+11. [Scaling & Performance](#scaling--performance)
+12. [Troubleshooting](#troubleshooting)
+
+## Prerequisites
+
+### Required Software
+
+- Docker 24.0+ and Docker Compose 2.0+
+- Kubernetes 1.28+ (for production)
+- PostgreSQL 14+
+- Redis 6+
+- Node.js 18+ and npm/yarn
+- Rust 1.70+ and Cargo
+- Soroban CLI
+- Git
+
+### Required Accounts
+
+- Stellar account with testnet/mainnet XLM
+- Cloud provider account (AWS/GCP/Azure)
+- Domain name and SSL certificates
+- Container registry access (Docker Hub/ECR/GCR)
+
+### System Requirements
+
+**Development Environment:**
+
+- CPU: 4 cores
+- RAM: 8GB
+- Storage: 20GB
+
+**Production Environment:**
+
+- CPU: 8+ cores
+- RAM: 16GB+
+- Storage: 100GB+ SSD
+- Network: 1Gbps+
+
+## Architecture Overview
+
+```
+┌─────────────────────────────────────────────────────────────┐
+│                     Load Balancer / CDN                     │
+│                    (Nginx / CloudFlare)                     │
+└─────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────┐
+│                      Frontend Cluster                       │
+│              (Next.js on Vercel / Docker)                   │
+└─────────────────────────────────────────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────┐
+│                      Backend Cluster                        │
+│                  (Rust/Axum on Kubernetes)                  │
+└─────────────────────────────────────────────────────────────┘
+                              │
+                ┌─────────────┴─────────────┐
+                ▼                           ▼
+┌───────────────────────────┐   ┌───────────────────────────┐
+│   PostgreSQL Cluster      │   │    Redis Cluster          │
+│   (Primary + Replicas)    │   │    (Cache Layer)          │
+└───────────────────────────┘   └───────────────────────────┘
+                              │
+                              ▼
+┌─────────────────────────────────────────────────────────────┐
+│                    Stellar Network                          │
+│                  (Soroban Smart Contracts)                  │
+└─────────────────────────────────────────────────────────────┘
+```
+
+## Environment Setup
+
+### 1. Clone Repository
+
+```bash
+git clone https://github.com/ChainLojistics/ChainLogistics.git
+cd ChainLogistics
+```
+
+### 2. Environment Variables
+
+Create environment files for each component:
+
+**Backend (.env)**
+
+```bash
+# Server Configuration
+SERVER_HOST=0.0.0.0
+SERVER_PORT=3001
+RUST_LOG=info
+
+# Database
+DATABASE_URL=postgresql://chainlog:password@localhost:5432/chainlogistics
+DATABASE_MAX_CONNECTIONS=20
+DATABASE_MIN_CONNECTIONS=5
+
+# Redis
+REDIS_URL=redis://localhost:6379
+REDIS_POOL_SIZE=10
+
+# Stellar/Soroban
+STELLAR_NETWORK=testnet
+STELLAR_RPC_URL=https://soroban-testnet.stellar.org
+CONTRACT_ID=YOUR_CONTRACT_ID
+STELLAR_SECRET_KEY=YOUR_SECRET_KEY
+
+# JWT
+JWT_SECRET=your-super-secret-jwt-key-change-this
+JWT_EXPIRATION=86400
+
+# API Rate Limiting
+RATE_LIMIT_PER_MINUTE=60
+RATE_LIMIT_BURST=10
+
+# Monitoring
+PROMETHEUS_PORT=9090
+GRAFANA_PORT=3000
+
+# External Services
+IPFS_GATEWAY=https://ipfs.io/ipfs/
+WEBHOOK_TIMEOUT_SECONDS=30
+```
+
+**Frontend (.env.local)**
+
+```bash
+# API Configuration
+NEXT_PUBLIC_API_URL=http://localhost:3001
+NEXT_PUBLIC_WS_URL=ws://localhost:3001/ws
+
+# Stellar Configuration
+NEXT_PUBLIC_STELLAR_NETWORK=testnet
+NEXT_PUBLIC_CONTRACT_ID=YOUR_CONTRACT_ID
+NEXT_PUBLIC_STELLAR_RPC_URL=https://soroban-testnet.stellar.org
+
+# Feature Flags
+NEXT_PUBLIC_ENABLE_ANALYTICS=true
+NEXT_PUBLIC_ENABLE_WEBSOCKETS=true
+NEXT_PUBLIC_ENABLE_DIGITAL_TWIN=true
+
+# Analytics
+NEXT_PUBLIC_GA_ID=G-XXXXXXXXXX
+```
+
+## Database Deployment
+
+### Local Development
+
+```bash
+# Start PostgreSQL with Docker
+docker run -d \
+  --name chainlog-postgres \
+  -e POSTGRES_USER=chainlog \
+  -e POSTGRES_PASSWORD=password \
+  -e POSTGRES_DB=chainlogistics \
+  -p 5432:5432 \
+  -v pgdata:/var/lib/postgresql/data \
+  postgres:14-alpine
+
+# Run migrations
+cd backend
+sqlx migrate run
+```
+
+### Production (Managed Service)
+
+**AWS RDS:**
+
+```bash
+# Create RDS instance
+aws rds create-db-instance \
+  --db-instance-identifier chainlog-prod \
+  --db-instance-class db.t3.medium \
+  --engine postgres \
+  --engine-version 14.9 \
+  --master-username chainlog \
+  --master-user-password YOUR_PASSWORD \
+  --allocated-storage 100 \
+  --storage-type gp3 \
+  --backup-retention-period 7 \
+  --multi-az \
+  --publicly-accessible false
+```
+
+**Google Cloud SQL:**
+
+```bash
+gcloud sql instances create chainlog-prod \
+  --database-version=POSTGRES_14 \
+  --tier=db-custom-4-16384 \
+  --region=us-central1 \
+  --backup \
+  --availability-type=REGIONAL
+```
+
+### Database Configuration
+
+**Optimize PostgreSQL:**
+
+```sql
+-- postgresql.conf optimizations
+shared_buffers = 4GB
+effective_cache_size = 12GB
+maintenance_work_mem = 1GB
+checkpoint_completion_target = 0.9
+wal_buffers = 16MB
+default_statistics_target = 100
+random_page_cost = 1.1
+effective_io_concurrency = 200
+work_mem = 10MB
+min_wal_size = 1GB
+max_wal_size = 4GB
+max_worker_processes = 8
+max_parallel_workers_per_gather = 4
+max_parallel_workers = 8
+```
+
+**Create Indexes:**
+
+```sql
+-- Performance indexes
+CREATE INDEX CONCURRENTLY idx_products_owner ON products(owner_address);
+CREATE INDEX CONCURRENTLY idx_products_category ON products(category);
+CREATE INDEX CONCURRENTLY idx_products_active ON products(is_active) WHERE is_active = true;
+CREATE INDEX CONCURRENTLY idx_events_product_time ON tracking_events(product_id, timestamp DESC);
+CREATE INDEX CONCURRENTLY idx_events_type ON tracking_events(event_type);
+CREATE INDEX CONCURRENTLY idx_users_email ON users(email);
+CREATE INDEX CONCURRENTLY idx_api_keys_user ON api_keys(user_id) WHERE is_active = true;
+```
+
+## Backend Deployment
+
+### Docker Build
+
+```bash
+cd backend
+
+# Build optimized Docker image
+docker build -t chainlogistics/backend:latest -f Dockerfile .
+
+# Multi-stage build for smaller image
+docker build \
+  --target production \
+  --build-arg RUST_VERSION=1.70 \
+  -t chainlogistics/backend:v1.0.0 .
+```
+
+**Optimized Dockerfile:**
+
+```dockerfile
+# Build stage
+FROM rust:1.70-slim as builder
+
+WORKDIR /app
+
+# Install dependencies
+RUN apt-get update && apt-get install -y \
+    pkg-config \
+    libssl-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy manifests
+COPY Cargo.toml Cargo.lock ./
+
+# Build dependencies (cached layer)
+RUN mkdir src && \
+    echo "fn main() {}" > src/main.rs && \
+    cargo build --release && \
+    rm -rf src
+
+# Copy source code
+COPY src ./src
+COPY migrations ./migrations
+
+# Build application
+RUN cargo build --release
+
+# Runtime stage
+FROM debian:bookworm-slim
+
+# Install runtime dependencies
+RUN apt-get update && apt-get install -y \
+    ca-certificates \
+    libssl3 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Create non-root user
+RUN useradd -m -u 1000 chainlog
+
+WORKDIR /app
+
+# Copy binary from builder
+COPY --from=builder /app/target/release/chainlojistic-backend /app/backend
+COPY --from=builder /app/migrations /app/migrations
+
+# Set ownership
+RUN chown -R chainlog:chainlog /app
+
+USER chainlog
+
+EXPOSE 3001
+
+CMD ["./backend"]
+```
+
+### Kubernetes Deployment
+
+**Deployment manifest (k8s/backend-deployment.yaml):**
+
+```yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: chainlog-backend
+  namespace: chainlogistics
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: chainlog-backend
+  template:
+    metadata:
+      labels:
+        app: chainlog-backend
+    spec:
+      containers:
+        - name: backend
+          image: chainlogistics/backend:v1.0.0
+          ports:
+            - containerPort: 3001
+          env:
+            - name: DATABASE_URL
+              valueFrom:
+                secretKeyRef:
+                  name: chainlog-secrets
+                  key: database-url
+            - name: REDIS_URL
+              valueFrom:
+                secretKeyRef:
+                  name: chainlog-secrets
+                  key: redis-url
+            - name: JWT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: chainlog-secrets
+                  key: jwt-secret
+          resources:
+            requests:
+              memory: "512Mi"
+              cpu: "500m"
+            limits:
+              memory: "2Gi"
+              cpu: "2000m"
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: 3001
+            initialDelaySeconds: 30
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /health/ready
+              port: 3001
+            initialDelaySeconds: 10
+            periodSeconds: 5
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: chainlog-backend-service
+  namespace: chainlogistics
+spec:
+  selector:
+    app: chainlog-backend
+  ports:
+    - protocol: TCP
+      port: 80
+      targetPort: 3001
+  type: LoadBalancer
+```
+
+**Deploy to Kubernetes:**
+
+```bash
+# Create namespace
+kubectl create namespace chainlogistics
+
+# Create secrets
+kubectl create secret generic chainlog-secrets \
+  --from-literal=database-url="postgresql://..." \
+  --from-literal=redis-url="redis://..." \
+  --from-literal=jwt-secret="..." \
+  -n chainlogistics
+
+# Apply deployments
+kubectl apply -f k8s/backend-deployment.yaml
+kubectl apply -f k8s/backend-service.yaml
+kubectl apply -f k8s/backend-hpa.yaml
+
+# Verify deployment
+kubectl get pods -n chainlogistics
+kubectl logs -f deployment/chainlog-backend -n chainlogistics
+```
+
+### Horizontal Pod Autoscaler
+
+```yaml
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: chainlog-backend-hpa
+  namespace: chainlogistics
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: chainlog-backend
+  minReplicas: 3
+  maxReplicas: 10
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: 70
+    - type: Resource
+      resource:
+        name: memory
+        target:
+          type: Utilization
+          averageUtilization: 80
+```
+
+## Frontend Deployment
+
+### Vercel Deployment (Recommended)
+
+```bash
+# Install Vercel CLI
+npm install -g vercel
+
+# Deploy to Vercel
+cd frontend
+vercel --prod
+
+# Configure environment variables in Vercel dashboard
+# Settings > Environment Variables
+```
+
+### Docker Deployment
+
+```bash
+cd frontend
+
+# Build Docker image
+docker build -t chainlogistics/frontend:latest .
+
+# Run container
+docker run -d \
+  -p 3000:3000 \
+  --name chainlog-frontend \
+  -e NEXT_PUBLIC_API_URL=https://api.chainlogistics.com \
+  chainlogistics/frontend:latest
+```
+
+**Frontend Dockerfile:**
+
+```dockerfile
+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+RUN npm ci
+
+# Copy source
+COPY . .
+
+# Build application
+RUN npm run build
+
+# Production stage
+FROM node:18-alpine
+
+WORKDIR /app
+
+# Copy built assets
+COPY --from=builder /app/.next ./.next
+COPY --from=builder /app/public ./public
+COPY --from=builder /app/package*.json ./
+COPY --from=builder /app/node_modules ./node_modules
+
+EXPOSE 3000
+
+CMD ["npm", "start"]
+```
+
+### Kubernetes Deployment
+
+```yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: chainlog-frontend
+  namespace: chainlogistics
+spec:
+  replicas: 2
+  selector:
+    matchLabels:
+      app: chainlog-frontend
+  template:
+    metadata:
+      labels:
+        app: chainlog-frontend
+    spec:
+      containers:
+        - name: frontend
+          image: chainlogistics/frontend:v1.0.0
+          ports:
+            - containerPort: 3000
+          env:
+            - name: NEXT_PUBLIC_API_URL
+              value: "https://api.chainlogistics.com"
+          resources:
+            requests:
+              memory: "256Mi"
+              cpu: "250m"
+            limits:
+              memory: "1Gi"
+              cpu: "1000m"
+```
+
+## Smart Contract Deployment
+
+### Testnet Deployment
+
+```bash
+cd smart-contract
+
+# Build contract
+cargo build --target wasm32-unknown-unknown --release
+
+# Deploy to testnet
+soroban contract deploy \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics.wasm \
+  --source-account YOUR_SECRET_KEY \
+  --network testnet
+
+# Save contract ID
+echo "CONTRACT_ID=<output-contract-id>" >> ../.env
+```
+
+### Mainnet Deployment
+
+```bash
+# Build optimized contract
+cargo build --target wasm32-unknown-unknown --release --features mainnet
+
+# Optimize WASM
+soroban contract optimize \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics.wasm
+
+# Deploy to mainnet
+soroban contract deploy \
+  --wasm target/wasm32-unknown-unknown/release/chainlogistics_optimized.wasm \
+  --source-account YOUR_MAINNET_SECRET_KEY \
+  --network mainnet
+
+# Verify deployment
+soroban contract invoke \
+  --id <CONTRACT_ID> \
+  --source-account YOUR_SECRET_KEY \
+  --network mainnet \
+  -- ping
+```
+
+## Infrastructure Setup
+
+### Docker Compose (Development)
+
+```yaml
+version: "3.8"
+
+services:
+  postgres:
+    image: postgres:14-alpine
+    environment:
+      POSTGRES_USER: chainlog
+      POSTGRES_PASSWORD: password
+      POSTGRES_DB: chainlogistics
+    ports:
+      - "5432:5432"
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U chainlog"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  redis:
+    image: redis:7-alpine
+    ports:
+      - "6379:6379"
+    volumes:
+      - redisdata:/data
+    healthcheck:
+      test: ["CMD", "redis-cli", "ping"]
+      interval: 10s
+      timeout: 3s
+      retries: 5
+
+  backend:
+    build:
+      context: ./backend
+      dockerfile: Dockerfile
+    ports:
+      - "3001:3001"
+    environment:
+      DATABASE_URL: postgresql://chainlog:password@postgres:5432/chainlogistics
+      REDIS_URL: redis://redis:6379
+    depends_on:
+      postgres:
+        condition: service_healthy
+      redis:
+        condition: service_healthy
+
+  frontend:
+    build:
+      context: ./frontend
+      dockerfile: Dockerfile
+    ports:
+      - "3000:3000"
+    environment:
+      NEXT_PUBLIC_API_URL: http://localhost:3001
+    depends_on:
+      - backend
+
+  prometheus:
+    image: prom/prometheus:latest
+    ports:
+      - "9090:9090"
+    volumes:
+      - ./docker/prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
+      - prometheus-data:/prometheus
+
+  grafana:
+    image: grafana/grafana:latest
+    ports:
+      - "3002:3000"
+    environment:
+      GF_SECURITY_ADMIN_PASSWORD: admin
+    volumes:
+      - ./docker/grafana/datasources:/etc/grafana/provisioning/datasources
+      - grafana-data:/var/lib/grafana
+
+volumes:
+  pgdata:
+  redisdata:
+  prometheus-data:
+  grafana-data:
+```
+
+### Nginx Configuration
+
+```nginx
+# /etc/nginx/sites-available/chainlogistics
+
+upstream backend {
+    least_conn;
+    server backend-1:3001 max_fails=3 fail_timeout=30s;
+    server backend-2:3001 max_fails=3 fail_timeout=30s;
+    server backend-3:3001 max_fails=3 fail_timeout=30s;
+}
+
+upstream frontend {
+    server frontend-1:3000;
+    server frontend-2:3000;
+}
+
+# Redirect HTTP to HTTPS
+server {
+    listen 80;
+    server_name chainlogistics.com www.chainlogistics.com;
+    return 301 https://$server_name$request_uri;
+}
+
+# HTTPS configuration
+server {
+    listen 443 ssl http2;
+    server_name chainlogistics.com www.chainlogistics.com;
+
+    # SSL certificates
+    ssl_certificate /etc/letsencrypt/live/chainlogistics.com/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/chainlogistics.com/privkey.pem;
+    ssl_protocols TLSv1.2 TLSv1.3;
+    ssl_ciphers HIGH:!aNULL:!MD5;
+    ssl_prefer_server_ciphers on;
+
+    # Security headers
+    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
+    add_header X-Frame-Options "SAMEORIGIN" always;
+    add_header X-Content-Type-Options "nosniff" always;
+    add_header X-XSS-Protection "1; mode=block" always;
+
+    # API routes
+    location /api/ {
+        proxy_pass http://backend;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_cache_bypass $http_upgrade;
+
+        # Timeouts
+        proxy_connect_timeout 60s;
+        proxy_send_timeout 60s;
+        proxy_read_timeout 60s;
+    }
+
+    # WebSocket routes
+    location /ws {
+        proxy_pass http://backend;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+    }
+
+    # Frontend routes
+    location / {
+        proxy_pass http://frontend;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection 'upgrade';
+        proxy_set_header Host $host;
+        proxy_cache_bypass $http_upgrade;
+    }
+
+    # Static assets caching
+    location ~* \.(jpg|jpeg|png|gif|ico|css|js|svg|woff|woff2|ttf|eot)$ {
+        proxy_pass http://frontend;
+        expires 1y;
+        add_header Cache-Control "public, immutable";
+    }
+}
+```
+
+## Monitoring & Logging
+
+### Prometheus Configuration
+
+```yaml
+# prometheus.yml
+global:
+  scrape_interval: 15s
+  evaluation_interval: 15s
+
+scrape_configs:
+  - job_name: "chainlog-backend"
+    static_configs:
+      - targets: ["backend:3001"]
+    metrics_path: "/metrics"
+
+  - job_name: "postgres"
+    static_configs:
+      - targets: ["postgres-exporter:9187"]
+
+  - job_name: "redis"
+    static_configs:
+      - targets: ["redis-exporter:9121"]
+
+  - job_name: "node"
+    static_configs:
+      - targets: ["node-exporter:9100"]
+```
+
+### Grafana Dashboards
+
+Import pre-built dashboards:
+
+- Node Exporter Full (ID: 1860)
+- PostgreSQL Database (ID: 9628)
+- Redis Dashboard (ID: 11835)
+- Kubernetes Cluster Monitoring (ID: 7249)
+
+### Logging Stack
+
+```yaml
+# ELK Stack deployment
+version: "3.8"
+
+services:
+  elasticsearch:
+    image: docker.elastic.co/elasticsearch/elasticsearch:8.10.0
+    environment:
+      - discovery.type=single-node
+      - "ES_JAVA_OPTS=-Xms512m -Xmx512m"
+    ports:
+      - "9200:9200"
+    volumes:
+      - esdata:/usr/share/elasticsearch/data
+
+  logstash:
+    image: docker.elastic.co/logstash/logstash:8.10.0
+    volumes:
+      - ./logstash/pipeline:/usr/share/logstash/pipeline
+    ports:
+      - "5000:5000"
+    depends_on:
+      - elasticsearch
+
+  kibana:
+    image: docker.elastic.co/kibana/kibana:8.10.0
+    ports:
+      - "5601:5601"
+    environment:
+      ELASTICSEARCH_URL: http://elasticsearch:9200
+    depends_on:
+      - elasticsearch
+
+volumes:
+  esdata:
+```
+
+## Security Configuration
+
+### SSL/TLS Setup
+
+```bash
+# Install Certbot
+sudo apt-get install certbot python3-certbot-nginx
+
+# Obtain SSL certificate
+sudo certbot --nginx -d chainlogistics.com -d www.chainlogistics.com
+
+# Auto-renewal
+sudo certbot renew --dry-run
+```
+
+### Firewall Configuration
+
+```bash
+# UFW (Ubuntu)
+sudo ufw allow 22/tcp    # SSH
+sudo ufw allow 80/tcp    # HTTP
+sudo ufw allow 443/tcp   # HTTPS
+sudo ufw enable
+
+# AWS Security Group
+aws ec2 authorize-security-group-ingress \
+  --group-id sg-xxxxx \
+  --protocol tcp \
+  --port 443 \
+  --cidr 0.0.0.0/0
+```
+
+### Secrets Management
+
+**Using Kubernetes Secrets:**
+
+```bash
+# Create secret from file
+kubectl create secret generic chainlog-secrets \
+  --from-file=database-url=./secrets/db-url.txt \
+  --from-file=jwt-secret=./secrets/jwt.txt \
+  -n chainlogistics
+
+# Create secret from literal
+kubectl create secret generic api-keys \
+  --from-literal=stellar-key='SXXXXX...' \
+  -n chainlogistics
+```
+
+**Using HashiCorp Vault:**
+
+```bash
+# Store secrets
+vault kv put secret/chainlog/prod \
+  database_url="postgresql://..." \
+  jwt_secret="..." \
+  stellar_key="..."
+
+# Retrieve secrets
+vault kv get secret/chainlog/prod
+```
+
+## Scaling & Performance
+
+### Database Scaling
+
+**Read Replicas:**
+
+```sql
+-- Configure streaming replication
+-- On primary server
+ALTER SYSTEM SET wal_level = replica;
+ALTER SYSTEM SET max_wal_senders = 10;
+ALTER SYSTEM SET wal_keep_size = '1GB';
+
+-- Create replication user
+CREATE USER replicator WITH REPLICATION ENCRYPTED PASSWORD 'password';
+```
+
+**Connection Pooling:**
+
+```rust
+// PgBouncer configuration
+[databases]
+chainlogistics = host=localhost port=5432 dbname=chainlogistics
+
+[pgbouncer]
+pool_mode = transaction
+max_client_conn = 1000
+default_pool_size = 25
+```
+
+### Redis Clustering
+
+```bash
+# Create Redis cluster
+redis-cli --cluster create \
+  127.0.0.1:7000 127.0.0.1:7001 127.0.0.1:7002 \
+  127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 \
+  --cluster-replicas 1
+```
+
+### CDN Configuration
+
+**CloudFlare Setup:**
+
+```bash
+# Configure caching rules
+- Cache Level: Standard
+- Browser Cache TTL: 4 hours
+- Always Online: On
+- Auto Minify: JS, CSS, HTML
+```
+
+## Troubleshooting
+
+### Common Issues
+
+**Database Connection Errors:**
+
+```bash
+# Check PostgreSQL status
+sudo systemctl status postgresql
+
+# Check connections
+psql -U chainlog -d chainlogistics -c "SELECT count(*) FROM pg_stat_activity;"
+
+# Reset connections
+SELECT pg_terminate_backend(pid) FROM pg_stat_activity WHERE datname = 'chainlogistics';
+```
+
+**High Memory Usage:**
+
+```bash
+# Check memory usage
+free -h
+docker stats
+
+# Restart services
+kubectl rollout restart deployment/chainlog-backend -n chainlogistics
+```
+
+**Slow API Responses:**
+
+```bash
+# Check slow queries
+SELECT query, mean_exec_time, calls
+FROM pg_stat_statements
+ORDER BY mean_exec_time DESC
+LIMIT 10;
+
+# Analyze query plans
+EXPLAIN ANALYZE SELECT * FROM products WHERE category = 'coffee';
+```
+
+### Health Checks
+
+```bash
+# Backend health
+curl http://localhost:3001/health
+
+# Database health
+pg_isready -h localhost -p 5432
+
+# Redis health
+redis-cli ping
+
+# Kubernetes health
+kubectl get pods -n chainlogistics
+kubectl describe pod <pod-name> -n chainlogistics
+```
+
+## Backup & Recovery
+
+### Database Backups
+
+```bash
+# Automated backup script
+#!/bin/bash
+BACKUP_DIR="/backups/postgres"
+TIMESTAMP=$(date +%Y%m%d_%H%M%S)
+BACKUP_FILE="$BACKUP_DIR/chainlog_$TIMESTAMP.sql.gz"
+
+pg_dump -U chainlog chainlogistics | gzip > $BACKUP_FILE
+
+# Keep only last 7 days
+find $BACKUP_DIR -name "*.sql.gz" -mtime +7 -delete
+```
+
+### Disaster Recovery
+
+```bash
+# Restore from backup
+gunzip < chainlog_20240315_120000.sql.gz | psql -U chainlog chainlogistics
+
+# Point-in-time recovery
+pg_basebackup -h primary -D /var/lib/postgresql/14/main -U replicator -P -v
+```
+
+## Maintenance
+
+### Rolling Updates
+
+```bash
+# Update backend
+kubectl set image deployment/chainlog-backend \
+  backend=chainlogistics/backend:v1.1.0 \
+  -n chainlogistics
+
+# Monitor rollout
+kubectl rollout status deployment/chainlog-backend -n chainlogistics
+
+# Rollback if needed
+kubectl rollout undo deployment/chainlog-backend -n chainlogistics
+```
+
+### Database Migrations
+
+```bash
+# Run migrations
+cd backend
+sqlx migrate run
+
+# Rollback migration
+sqlx migrate revert
+```
+
+---
+
+## Support & Resources
+
+- Documentation: https://docs.chainlogistics.com
+- GitHub Issues: https://github.com/ChainLojistics/ChainLogistics/issues
+- Discord: https://discord.gg/chainlogistics
+- Email: devops@chainlogistics.com
+
+## License
+
+MIT License - See LICENSE file for details
diff --git a/docs/DIGITAL_TWIN.md b/docs/DIGITAL_TWIN.md
new file mode 100644
index 00000000..67e2c1e1
--- /dev/null
+++ b/docs/DIGITAL_TWIN.md
@@ -0,0 +1,708 @@
+# Digital Twin Platform Documentation
+
+## Overview
+
+The ChainLogistics Digital Twin Platform creates virtual replicas of physical supply chain entities, enabling simulation, optimization, and predictive modeling. This powerful feature allows organizations to test scenarios, predict outcomes, and optimize operations before implementing changes in the real world.
+
+## Table of Contents
+
+1. [Introduction](#introduction)
+2. [Core Concepts](#core-concepts)
+3. [Architecture](#architecture)
+4. [Features](#features)
+5. [API Reference](#api-reference)
+6. [Use Cases](#use-cases)
+7. [Implementation Guide](#implementation-guide)
+8. [Best Practices](#best-practices)
+
+## Introduction
+
+### What is a Digital Twin?
+
+A digital twin is a virtual representation of a physical object, process, or system that spans its lifecycle and is updated from real-time data. In supply chain management, digital twins enable:
+
+- Real-time monitoring and visualization
+- Predictive analytics and forecasting
+- What-if scenario simulation
+- Optimization recommendations
+- Risk assessment and mitigation
+
+### Benefits
+
+- **Risk Reduction**: Test changes in a virtual environment before real-world implementation
+- **Cost Optimization**: Identify inefficiencies and optimization opportunities
+- **Predictive Insights**: Forecast issues before they occur
+- **Data-Driven Decisions**: Make informed decisions based on simulations
+- **Continuous Improvement**: Iterate and optimize operations continuously
+
+## Core Concepts
+
+### 1. Digital Twin Types
+
+The platform supports multiple twin types:
+
+**Product Twin**
+
+- Represents individual products or batches
+- Tracks lifecycle from origin to destination
+- Monitors quality, location, and condition
+
+**Warehouse Twin**
+
+- Models warehouse operations and inventory
+- Optimizes storage and retrieval
+- Predicts capacity and throughput
+
+**Vehicle Twin**
+
+- Represents transportation assets
+- Optimizes routes and schedules
+- Monitors performance and maintenance
+
+**Container Twin**
+
+- Tracks shipping containers
+- Monitors environmental conditions
+- Optimizes loading and routing
+
+**Facility Twin**
+
+- Models production or distribution facilities
+- Optimizes workflows and processes
+- Predicts capacity and bottlenecks
+
+### 2. Twin States
+
+Digital twins maintain state information that evolves over time:
+
+```json
+{
+  "location": {
+    "latitude": 40.7128,
+    "longitude": -74.006,
+    "address": "New York, NY"
+  },
+  "condition": {
+    "temperature": 22.5,
+    "humidity": 45,
+    "quality_score": 0.95
+  },
+  "status": "in_transit",
+  "metrics": {
+    "distance_traveled": 1250,
+    "time_elapsed_hours": 18,
+    "estimated_arrival": "2024-03-20T14:30:00Z"
+  }
+}
+```
+
+### 3. Simulations
+
+Simulations enable what-if analysis:
+
+**Route Optimization**
+
+- Find optimal paths considering distance, time, cost, and carbon
+- Account for traffic, weather, and restrictions
+- Compare multiple routing strategies
+
+**Demand Forecasting**
+
+- Predict future demand based on historical data
+- Identify trends and seasonality
+- Account for external factors
+
+**Inventory Optimization**
+
+- Determine optimal stock levels
+- Minimize holding costs while avoiding stockouts
+- Balance service levels with costs
+
+**Risk Assessment**
+
+- Identify potential disruptions
+- Quantify risk levels
+- Recommend mitigation strategies
+
+**Cost Analysis**
+
+- Break down total cost of ownership
+- Identify cost reduction opportunities
+- Compare alternative scenarios
+
+**Timeline Projection**
+
+- Predict project completion times
+- Identify critical path and bottlenecks
+- Assess schedule risks
+
+### 4. Predictions
+
+AI/ML-based predictions for key events:
+
+- **Arrival Time**: Estimated time of arrival with confidence intervals
+- **Delays**: Probability and magnitude of delays
+- **Quality Issues**: Risk of quality degradation
+- **Demand Spikes**: Unexpected demand increases
+- **Supply Disruptions**: Potential supply chain interruptions
+- **Cost Overruns**: Budget variance predictions
+
+### 5. Optimizations
+
+Actionable recommendations for improvement:
+
+- Route optimization suggestions
+- Inventory level adjustments
+- Cost reduction opportunities
+- Time savings strategies
+- Carbon footprint reduction
+- Risk mitigation actions
+
+## Architecture
+
+### System Components
+
+```
+┌─────────────────────────────────────────────────────────────┐
+│                    Frontend Layer                           │
+│  ┌──────────────┐  ┌──────────────┐  ┌──────────────────┐  │
+│  │ Twin Viewer  │  │  Simulation  │  │   Analytics      │  │
+│  │  Dashboard   │  │   Console    │  │   Dashboard      │  │
+│  └──────────────┘  └──────────────┘  └──────────────────┘  │
+└─────────────────────────────────────────────────────────────┘
+                            │
+                            ▼
+┌─────────────────────────────────────────────────────────────┐
+│                    API Layer                                │
+│  ┌──────────────┐  ┌──────────────┐  ┌──────────────────┐  │
+│  │ Twin API     │  │ Simulation   │  │  Prediction      │  │
+│  │              │  │ API          │  │  API             │  │
+│  └──────────────┘  └──────────────┘  └──────────────────┘  │
+└─────────────────────────────────────────────────────────────┘
+                            │
+                            ▼
+┌─────────────────────────────────────────────────────────────┐
+│                 Digital Twin Service                        │
+│  ┌──────────────┐  ┌──────────────┐  ┌──────────────────┐  │
+│  │ State Mgmt   │  │ Simulation   │  │  ML Engine       │  │
+│  │              │  │ Engine       │  │                  │  │
+│  └──────────────┘  └──────────────┘  └──────────────────┘  │
+└─────────────────────────────────────────────────────────────┘
+                            │
+                            ▼
+┌─────────────────────────────────────────────────────────────┐
+│                    Data Layer                               │
+│  ┌──────────────┐  ┌──────────────┐  ┌──────────────────┐  │
+│  │ Twin States  │  │ Simulations  │  │  Predictions     │  │
+│  │ (PostgreSQL) │  │ (PostgreSQL) │  │  (PostgreSQL)    │  │
+│  └──────────────┘  └──────────────┘  └──────────────────┘  │
+└─────────────────────────────────────────────────────────────┘
+```
+
+### Data Flow
+
+1. **Real-time Updates**: Physical events update twin state
+2. **State Synchronization**: Twin state persisted to database
+3. **Analytics Processing**: Metrics calculated from state data
+4. **Prediction Generation**: ML models generate predictions
+5. **Simulation Execution**: What-if scenarios run on demand
+6. **Optimization Recommendations**: System suggests improvements
+
+## Features
+
+### 1. Twin Management
+
+**Create Digital Twin**
+
+```bash
+POST /api/digital-twins
+{
+  "product_id": "PROD-12345",
+  "twin_type": "Product",
+  "name": "Coffee Batch #42 Twin",
+  "description": "Digital twin for Ethiopian coffee batch",
+  "initial_state": {
+    "location": "Addis Ababa, Ethiopia",
+    "status": "harvested",
+    "quality_score": 0.95
+  },
+  "metadata": {
+    "batch_size": 1000,
+    "variety": "Arabica"
+  }
+}
+```
+
+**Update Twin State**
+
+```bash
+PUT /api/digital-twins/{twin_id}/state
+{
+  "state_data": {
+    "location": "Port of Djibouti",
+    "status": "in_transit",
+    "temperature": 22.5
+  },
+  "metrics": {
+    "distance_traveled": 350,
+    "time_elapsed_hours": 8
+  },
+  "source": "iot_sensor"
+}
+```
+
+### 2. Simulations
+
+**Create Simulation**
+
+```bash
+POST /api/simulations
+{
+  "twin_id": "550e8400-e29b-41d4-a716-446655440000",
+  "name": "Route Optimization Test",
+  "description": "Compare shipping routes",
+  "simulation_type": "RouteOptimization",
+  "parameters": {
+    "origin": "Shanghai",
+    "destination": "Los Angeles",
+    "constraints": {
+      "max_cost": 5000,
+      "max_time_days": 30
+    }
+  },
+  "created_by": "user@example.com"
+}
+```
+
+**Run Simulation**
+
+```bash
+POST /api/simulations/{simulation_id}/run
+```
+
+**Simulation Result**
+
+```json
+{
+  "simulation_id": "660e8400-e29b-41d4-a716-446655440000",
+  "status": "Completed",
+  "execution_time_ms": 1250,
+  "results": {
+    "original_route": {
+      "distance_km": 11500,
+      "time_days": 28,
+      "cost_usd": 4800,
+      "carbon_kg": 2300
+    },
+    "optimized_route": {
+      "distance_km": 10800,
+      "time_days": 25,
+      "cost_usd": 4200,
+      "carbon_kg": 2050
+    },
+    "improvements": {
+      "distance_reduction_percent": 6.1,
+      "time_savings_days": 3,
+      "cost_savings_usd": 600,
+      "carbon_reduction_kg": 250
+    }
+  },
+  "insights": [
+    "Route optimization can reduce distance by 6.1%",
+    "Estimated time savings of 3 days",
+    "Carbon emissions reduced by 250kg"
+  ],
+  "recommendations": [
+    "Implement the optimized route",
+    "Consider rail transport for inland segments",
+    "Monitor weather conditions along route"
+  ]
+}
+```
+
+### 3. Predictions
+
+**Create Prediction**
+
+```bash
+POST /api/predictions
+{
+  "twin_id": "550e8400-e29b-41d4-a716-446655440000",
+  "prediction_type": "ArrivalTime",
+  "prediction_horizon": 72,
+  "input_features": {
+    "current_location": "Pacific Ocean",
+    "current_speed": 22,
+    "weather_conditions": "favorable"
+  }
+}
+```
+
+**Prediction Response**
+
+```json
+{
+  "id": "770e8400-e29b-41d4-a716-446655440000",
+  "twin_id": "550e8400-e29b-41d4-a716-446655440000",
+  "prediction_type": "ArrivalTime",
+  "predicted_value": {
+    "estimated_arrival": "2024-03-20T14:30:00Z",
+    "variance_hours": 2
+  },
+  "confidence_score": 0.85,
+  "prediction_horizon": 72,
+  "created_at": "2024-03-17T14:30:00Z",
+  "valid_until": "2024-03-20T14:30:00Z"
+}
+```
+
+### 4. Analytics
+
+**Get Twin Analytics**
+
+```bash
+GET /api/digital-twins/{twin_id}/analytics
+```
+
+**Analytics Response**
+
+```json
+{
+  "twin_id": "550e8400-e29b-41d4-a716-446655440000",
+  "metrics": {
+    "total_events": 150,
+    "avg_transit_time": 72.5,
+    "on_time_delivery_rate": 0.92,
+    "quality_score": 0.95,
+    "cost_efficiency": 0.88,
+    "carbon_footprint": 450.0,
+    "risk_score": 0.35
+  },
+  "recent_predictions": [...],
+  "active_optimizations": [...],
+  "simulation_count": 12,
+  "state_history_count": 150
+}
+```
+
+## API Reference
+
+### Endpoints
+
+#### Digital Twins
+
+| Method | Endpoint                            | Description           |
+| ------ | ----------------------------------- | --------------------- |
+| POST   | `/api/digital-twins`                | Create digital twin   |
+| GET    | `/api/digital-twins/{id}`           | Get twin by ID        |
+| GET    | `/api/products/{id}/twins`          | Get twins for product |
+| PUT    | `/api/digital-twins/{id}/state`     | Update twin state     |
+| GET    | `/api/digital-twins/{id}/states`    | Get state history     |
+| GET    | `/api/digital-twins/{id}/analytics` | Get twin analytics    |
+
+#### Simulations
+
+| Method | Endpoint                              | Description           |
+| ------ | ------------------------------------- | --------------------- |
+| POST   | `/api/simulations`                    | Create simulation     |
+| GET    | `/api/simulations/{id}`               | Get simulation        |
+| POST   | `/api/simulations/{id}/run`           | Run simulation        |
+| GET    | `/api/digital-twins/{id}/simulations` | List twin simulations |
+
+#### Predictions
+
+| Method | Endpoint                              | Description           |
+| ------ | ------------------------------------- | --------------------- |
+| POST   | `/api/predictions`                    | Create prediction     |
+| GET    | `/api/predictions/{id}`               | Get prediction        |
+| GET    | `/api/digital-twins/{id}/predictions` | List twin predictions |
+
+## Use Cases
+
+### 1. Supply Chain Optimization
+
+**Scenario**: A coffee importer wants to optimize shipping routes from Ethiopia to the US.
+
+**Implementation**:
+
+1. Create product twin for coffee batch
+2. Run route optimization simulation
+3. Compare multiple shipping options
+4. Implement optimal route
+5. Monitor actual performance vs. prediction
+
+**Benefits**:
+
+- 10-15% cost reduction
+- 2-3 days faster delivery
+- 20% lower carbon footprint
+
+### 2. Demand Forecasting
+
+**Scenario**: A retailer needs to predict demand for seasonal products.
+
+**Implementation**:
+
+1. Create warehouse twin
+2. Run demand forecasting simulation
+3. Adjust inventory levels based on predictions
+4. Monitor actual demand vs. forecast
+5. Refine model with actual data
+
+**Benefits**:
+
+- 25% reduction in stockouts
+- 15% lower inventory holding costs
+- Improved customer satisfaction
+
+### 3. Risk Management
+
+**Scenario**: A manufacturer wants to assess supply chain risks.
+
+**Implementation**:
+
+1. Create facility twin
+2. Run risk assessment simulation
+3. Identify high-risk scenarios
+4. Implement mitigation strategies
+5. Monitor risk indicators
+
+**Benefits**:
+
+- Early warning of disruptions
+- 40% faster response to issues
+- Reduced impact of disruptions
+
+### 4. Quality Assurance
+
+**Scenario**: A pharmaceutical company needs to ensure product quality during transport.
+
+**Implementation**:
+
+1. Create container twin with sensors
+2. Monitor temperature and humidity
+3. Predict quality issues
+4. Alert on threshold violations
+5. Take corrective action
+
+**Benefits**:
+
+- 99.9% quality compliance
+- Reduced product waste
+- Regulatory compliance
+
+## Implementation Guide
+
+### Step 1: Create Digital Twin
+
+```typescript
+// Frontend example
+const createTwin = async (productId: string) => {
+  const response = await fetch("/api/digital-twins", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      product_id: productId,
+      twin_type: "Product",
+      name: "My Product Twin",
+      description: "Digital twin for tracking",
+      initial_state: {
+        location: "Origin",
+        status: "created",
+      },
+      metadata: {},
+    }),
+  });
+
+  return await response.json();
+};
+```
+
+### Step 2: Update State
+
+```typescript
+const updateTwinState = async (twinId: string, stateData: any) => {
+  const response = await fetch(`/api/digital-twins/${twinId}/state`, {
+    method: "PUT",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      state_data: stateData,
+      metrics: calculateMetrics(stateData),
+      source: "manual_update",
+    }),
+  });
+
+  return await response.json();
+};
+```
+
+### Step 3: Run Simulation
+
+```typescript
+const runSimulation = async (twinId: string) => {
+  // Create simulation
+  const simulation = await fetch("/api/simulations", {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify({
+      twin_id: twinId,
+      name: "Route Optimization",
+      simulation_type: "RouteOptimization",
+      parameters: {
+        origin: "New York",
+        destination: "Los Angeles",
+      },
+      created_by: "user@example.com",
+    }),
+  }).then((r) => r.json());
+
+  // Run simulation
+  const result = await fetch(`/api/simulations/${simulation.id}/run`, {
+    method: "POST",
+  }).then((r) => r.json());
+
+  return result;
+};
+```
+
+### Step 4: Get Analytics
+
+```typescript
+const getTwinAnalytics = async (twinId: string) => {
+  const response = await fetch(`/api/digital-twins/${twinId}/analytics`);
+  return await response.json();
+};
+```
+
+## Best Practices
+
+### 1. State Management
+
+- Update twin state regularly (every event or time interval)
+- Include relevant metrics with each state update
+- Use consistent data formats
+- Validate state data before updates
+
+### 2. Simulation Design
+
+- Define clear objectives for each simulation
+- Use realistic parameters and constraints
+- Run multiple scenarios for comparison
+- Document assumptions and limitations
+
+### 3. Prediction Accuracy
+
+- Provide sufficient historical data
+- Update models with actual outcomes
+- Monitor prediction accuracy over time
+- Adjust confidence thresholds appropriately
+
+### 4. Performance Optimization
+
+- Limit state history retention (e.g., last 1000 states)
+- Use pagination for large result sets
+- Cache frequently accessed analytics
+- Run simulations asynchronously
+
+### 5. Security
+
+- Authenticate all API requests
+- Authorize access to sensitive twins
+- Encrypt sensitive state data
+- Audit simulation and prediction access
+
+## Advanced Topics
+
+### Custom Simulation Types
+
+Extend the platform with custom simulation logic:
+
+```rust
+// Add custom simulation type
+pub enum SimulationType {
+    // ... existing types
+    CustomOptimization,
+}
+
+// Implement simulation logic
+async fn simulate_custom_optimization(
+    &self,
+    parameters: &serde_json::Value,
+) -> Result<serde_json::Value, AppError> {
+    // Your custom logic here
+    Ok(serde_json::json!({
+        "result": "custom optimization result"
+    }))
+}
+```
+
+### Machine Learning Integration
+
+Integrate ML models for predictions:
+
+```python
+# Train prediction model
+from sklearn.ensemble import RandomForestRegressor
+
+model = RandomForestRegressor()
+model.fit(X_train, y_train)
+
+# Save model
+import joblib
+joblib.dump(model, 'arrival_time_model.pkl')
+
+# Use in prediction service
+model = joblib.load('arrival_time_model.pkl')
+prediction = model.predict(features)
+```
+
+### Real-time State Updates
+
+Integrate IoT sensors for real-time updates:
+
+```typescript
+// WebSocket connection for real-time updates
+const ws = new WebSocket("ws://api.chainlogistics.com/ws");
+
+ws.onmessage = (event) => {
+  const update = JSON.parse(event.data);
+  if (update.type === "twin_state_update") {
+    updateTwinState(update.twin_id, update.state);
+  }
+};
+```
+
+## Troubleshooting
+
+### Common Issues
+
+**Simulation Timeout**
+
+- Reduce simulation complexity
+- Optimize parameters
+- Run simulations asynchronously
+
+**Inaccurate Predictions**
+
+- Provide more training data
+- Update model with actual outcomes
+- Adjust feature engineering
+
+**State Sync Issues**
+
+- Check network connectivity
+- Verify authentication
+- Review error logs
+
+## Support
+
+For questions or issues:
+
+- Documentation: https://docs.chainlogistics.com
+- GitHub Issues: https://github.com/ChainLojistics/ChainLogistics/issues
+- Discord: https://discord.gg/chainlogistics
+- Email: support@chainlogistics.com
+
+## License
+
+MIT License - See LICENSE file for details
diff --git a/docs/DISASTER_RECOVERY.md b/docs/DISASTER_RECOVERY.md
new file mode 100644
index 00000000..82d1e8bc
--- /dev/null
+++ b/docs/DISASTER_RECOVERY.md
@@ -0,0 +1,630 @@
+# Disaster Recovery Plan for ChainLogistics
+
+## Executive Summary
+
+This document defines the Disaster Recovery (DR) strategy for ChainLogistics to ensure business continuity and rapid recovery from infrastructure failures, data loss, or other catastrophic events.
+
+## Recovery Objectives
+
+| Metric | Target | Rationale |
+|--------|--------|-----------|
+| **RPO** (Recovery Point Objective) | 1 hour | Acceptable data loss = 1 hour of transactions |
+| **RTO** (Recovery Time Objective) | 4 hours | Maximum acceptable downtime for operations |
+| **MTTR** (Mean Time to Repair) | 30 minutes | Target average recovery time |
+| **Availability Target** | 99.5% | 3.7 hours downtime per month acceptable |
+
+## Disaster Classification
+
+### Tier 1: Severe (Full Infrastructure Loss)
+- Complete data center failure
+- Multiple region outage
+- Ransomware attack
+- **Response Time**: Activate immediate failover
+
+### Tier 2: Major (Partial Service Loss)
+- Database corruption
+- Primary database node failure
+- Smart contract compromise
+- **Response Time**: Failover within 30 minutes
+
+### Tier 3: Minor (Degraded Performance)
+- Single server failure
+- Performance degradation
+- API rate limiting issues
+- **Response Time**: Manual recovery within 4 hours
+
+## Disaster Recovery Architecture
+
+```
+┌─────────────────────────────────────────────────────────────┐
+│                    Production Environment                    │
+│  Primary Region (us-east-1)                                  │
+│  ┌──────────────────────────────────────────────────────┐   │
+│  │ Database Cluster                                      │   │
+│  │ ├─ Primary (Writes)                                  │   │
+│  │ ├─ Standby 1 (Sync Replication)                     │   │
+│  │ └─ Standby 2 (Async Replication)                    │   │
+│  └──────────────────────────────────────────────────────┘   │
+│              ↓ Streaming Replication ↓                       │
+└─────────────────────────────────────────────────────────────┘
+                        │
+                        │ Daily Backup
+                        ↓
+┌─────────────────────────────────────────────────────────────┐
+│              Backup Region (us-west-2)                       │
+│  ┌──────────────────────────────────────────────────────┐   │
+│  │ Warm Standby Database                                │   │
+│  │ ├─ Read-only replica                                │   │
+│  │ ├─ 30-minute lag from primary                       │   │
+│  │ └─ Can be promoted to primary in seconds            │   │
+│  └──────────────────────────────────────────────────────┘   │
+└─────────────────────────────────────────────────────────────┘
+                        │
+                        │ S3 Backups
+                        ↓
+┌─────────────────────────────────────────────────────────────┐
+│          Cold Storage (Glacier Archive)                      │
+│  - Monthly snapshots                                         │
+│  - 1-year retention                                          │
+│  - 24-hour retrieval time                                    │
+└─────────────────────────────────────────────────────────────┘
+```
+
+## Recovery Scenarios
+
+### Scenario 1: Primary Database Failure
+
+**Symptoms**:
+- Database connection timeouts
+- Read/write errors
+- High error rate in logs
+
+**Recovery Steps**:
+
+1. **Detection** (Automatic - 2 min):
+   - Health checks detect primary down
+   - CloudWatch alarm triggered
+   - Slack notification sent
+
+2. **Diagnosis** (Manual - 5 min):
+   ```bash
+   # Check standby status
+   psql -h standby-1 -c "SELECT status FROM pg_stat_replication;"
+   
+   # Check replication lag
+   psql -h standby-1 -c "SELECT slot_name, restart_lsn FROM pg_replication_slots;"
+   ```
+
+3. **Failover** (Automatic - 30 sec):
+   ```bash
+   # Promote standby to primary
+   pg_ctl promote -D /var/lib/postgresql/data
+   
+   # Update DNS to point to new primary
+   aws route53 change-resource-record-sets \
+     --hosted-zone-id Z123ABC \
+     --change-batch '{
+       "Changes": [{
+         "Action": "UPSERT",
+         "ResourceRecordSet": {
+           "Name": "db.chainlogistics.internal",
+           "Type": "CNAME",
+           "TTL": 60,
+           "ResourceRecords": [{"Value": "standby-1.internal"}]
+         }
+       }]
+     }'
+   ```
+
+4. **Application Recovery** (Automatic - 2 min):
+   - Applications detect new primary via DNS
+   - Connection pool refreshes
+   - Queries resume
+
+5. **Verification** (Manual - 5 min):
+   ```bash
+   # Verify application connectivity
+   curl -s http://api.chainlogistics.com/health | jq .
+   
+   # Check error rates
+   aws cloudwatch get-metric-statistics \
+     --namespace ChainLogistics \
+     --metric-name ErrorRate \
+     --start-time $(date -u -d '10 min ago' +%Y-%m-%dT%H:%M:%S) \
+     --end-time $(date -u +%Y-%m-%dT%H:%M:%S) \
+     --period 300 \
+     --statistics Average
+   ```
+
+**Total Recovery Time**: ~10 minutes
+**Data Loss**: 0 (synchronous replication)
+
+### Scenario 2: Data Corruption
+
+**Symptoms**:
+- Application crashes on specific queries
+- Integrity constraint violations
+- Unexplained data inconsistencies
+
+**Recovery Steps**:
+
+1. **Isolation** (Immediate):
+   ```bash
+   # Stop applications from writing
+   kubectl set env deployment/api DB_READ_ONLY=true
+   
+   # Create point-in-time snapshot
+   aws rds create-db-snapshot \
+     --db-instance-identifier chainlogistics-prod \
+     --db-snapshot-identifier chainlogistics-corruption-$(date +%s)
+   ```
+
+2. **Analysis** (5-10 min):
+   ```sql
+   -- Check for integrity violations
+   SELECT table_name FROM information_schema.tables
+   WHERE table_schema = 'public';
+   
+   -- Validate specific tables
+   REINDEX TABLE products;
+   REINDEX TABLE events;
+   ```
+
+3. **Restore from Backup** (15-30 min):
+   ```bash
+   # Restore to last known good backup (1 hour old)
+   RESTORE_POINT=$(date -d '1 hour ago' +%Y-%m-%dT%H:%M:%S)
+   
+   pg_restore --dbname=chainlogistics_restore \
+     backup_2024_01_15_01_00.sql.gz
+   
+   # Verify restored data
+   psql -d chainlogistics_restore -c "SELECT COUNT(*) FROM products;"
+   ```
+
+4. **Application Recovery**:
+   ```bash
+   # Point to restored database
+   kubectl set env deployment/api DB_HOST=restored-db-instance
+   
+   # Re-enable writes
+   kubectl set env deployment/api DB_READ_ONLY=false
+   ```
+
+5. **Investigation**:
+   - Analyze what caused corruption
+   - Update validation rules
+   - Deploy fixes
+
+**Total Recovery Time**: 30-60 minutes
+**Data Loss**: Up to 1 hour
+
+### Scenario 3: Smart Contract Compromise
+
+**Symptoms**:
+- Unauthorized transactions
+- Token balance discrepancies
+- Suspicious contract calls
+
+**Recovery Steps**:
+
+1. **Emergency Action** (Immediate):
+   ```bash
+   # Pause contract operations
+   soroban contract invoke \
+     --id CONTRACTID \
+     --fn pause
+   
+   # Notify users
+   kubectl create configmap incident-notice \
+     --from-literal=status="Contract paused for security investigation"
+   ```
+
+2. **Forensics** (30-60 min):
+   ```bash
+   # Export transaction history
+   soroban contract invoke \
+     --id CONTRACTID \
+     --fn get_events \
+     --arg-from-xdr '...' > /tmp/events.xdr
+   
+   # Analyze blockchain logs
+   stellar_lfb="https://horizon-testnet.stellar.org"
+   curl "$stellar_lfb/accounts/CONTRACTID"
+   ```
+
+3. **Remediation**:
+   - Deploy patched contract
+   - Update contract code
+   - Verify fix on testnet first
+
+4. **Deployment**:
+   ```bash
+   # Deploy to testnet first
+   soroban contract deploy --network testnet \
+     --path target/wasm32-unknown-unknown/release/contract.wasm
+   
+   # Verify on testnet (24-48 hours)
+   # Then deploy to mainnet
+   soroban contract deploy --network public \
+     --path target/wasm32-unknown-unknown/release/contract.wasm
+   ```
+
+**Total Recovery Time**: 4-24 hours
+**Data Loss**: Potentially reversible via blockchain
+
+### Scenario 4: Complete Region Failure
+
+**Symptoms**:
+- All services in region unavailable
+- Network timeouts
+- All health checks failing
+
+**Recovery Steps**:
+
+1. **Activate Failover** (Immediate):
+   ```bash
+   # Promote warm standby in backup region
+   kubectl config use-context chainlogistics-backup-region
+   
+   # Promote database
+   aws rds promote-read-replica \
+     --db-instance-identifier chainlogistics-backup-replica
+   ```
+
+2. **Traffic Reroute** (1-2 min):
+   ```bash
+   # Update global load balancer
+   aws globalaccelerator update-accelerator \
+     --accelerator-arn arn:aws:globalaccelerator::ACCOUNT:accelerator/chainlogistics \
+     --traffic-dial-percentage '{
+       "primary-region": 0,
+       "backup-region": 100
+     }'
+   ```
+
+3. **Verify Backup Systems**:
+   ```bash
+   # Health checks in backup region
+   for i in {1..10}; do
+     curl -s https://backup.chainlogistics.com/health
+     sleep 5
+   done
+   ```
+
+4. **Communicate Status**:
+   ```bash
+   # Update status page
+   aws sns publish \
+     --topic-arn arn:aws:sns:us-east-1:ACCOUNT:disasters \
+     --subject "ChainLogistics Failover Activated" \
+     --message "Traffic rerouted to backup region. ETA full recovery: 30 min"
+   ```
+
+**Total Recovery Time**: 5-15 minutes
+**Data Loss**: 0-30 minutes (depending on replication lag)
+
+## Pre-Disaster Preparation
+
+### Pre-Disaster Checklist
+
+**Monthly Review** (1st of each month):
+- [ ] Review and update this DR plan
+- [ ] Update contact information
+- [ ] Verify backup integrity
+- [ ] Test restore procedures
+
+**Quarterly Validation** (Every 3 months):
+- [ ] Conduct partial failover test
+- [ ] Verify RTO/RPO targets
+- [ ] Test backup restoration
+- [ ] Document findings
+
+**Annual Full DR Exercise**:
+- [ ] Complete infrastructure failover
+- [ ] Measure actual RTO/RPO
+- [ ] Test team communication
+- [ ] Update playbooks
+
+### Infrastructure Requirements
+
+**Primary Region (us-east-1)**:
+- 3-node database cluster
+- Load balancer
+- 2 AZs minimum
+
+**Backup Region (us-west-2)**:
+- Warm standby database
+- Load balancer
+- Cold storage for archives
+
+**Redundancy**:
+- Multiple subnets across AZs
+- Multiple DNS providers
+- Separate security groups per component
+
+### Automation Setup
+
+```yaml
+# Helm Chart for DR-Aware Deployment
+apiVersion: helm.sh/v1
+kind: Chart
+metadata:
+  name: chainlogistics-ha
+spec:
+  values:
+    replication:
+      enabled: true
+      regions:
+        - name: primary
+          endpoint: db-primary.us-east-1.rds.amazonaws.com
+          priority: 1
+        - name: backup
+          endpoint: db-backup.us-west-2.rds.amazonaws.com
+          priority: 2
+    healthchecks:
+      interval: 30s
+      timeout: 5s
+      failureThreshold: 3
+```
+
+## DR Team Responsibilities
+
+### Incident Commander
+- Declares disaster level (Tier 1/2/3)
+- Activates DR procedures
+- Communicates with stakeholders
+- Approves failover decisions
+
+### Database Administrator
+- Monitors replication status
+- Executes failover procedures
+- Validates data integrity
+- Manages backup operations
+
+### Infrastructure Engineer
+- Updates DNS records
+- Configures load balancers
+- Monitors resource utilization
+- Verifies connectivity
+
+### Application Developer
+- Validates application connectivity
+- Checks business logic
+- Monitors error rates
+- Tests critical workflows
+
+### Communications Lead
+- Updates status page
+- Notifies users
+- Coordinates with teams
+- Documents timeline
+
+## Communication Plan
+
+### Escalation Chain
+
+```
+Event Detected (Automated Alert)
+    ↓
+On-Call DBA (Page via PagerDuty)
+    ↓
+Incident Commander (If RTO > 15 min)
+    ↓
+Team Leads (If RTO > 30 min)
+    ↓
+Executive Stakeholders (If RTO > 1 hour or data loss expected)
+```
+
+### Notification Templates
+
+**Status Page Update**:
+```
+⚠️ SERVICE DISRUPTION
+The ChainLogistics API is experiencing intermittent connectivity issues.
+Our team is investigating and will provide updates every 15 minutes.
+```
+
+**Email Notification**:
+```
+Subject: ChainLogistics Incident Alert - Database Failover Initiated
+
+Time: 2024-01-15 14:32:00 UTC
+Severity: Major
+Impact: Read-only mode active, writes temporarily suspended
+
+Actions Taken:
+- Database failover initiated
+- Promoting standby replica to primary
+- ETA for full recovery: 15 minutes
+
+We will provide updates every 5 minutes.
+```
+
+## Monitoring and Alerting
+
+### Critical Metrics
+
+```yaml
+Alerts:
+  - ReplicationLagHigh:
+      threshold: 30s
+      action: page_on_call
+  
+  - PrimaryDatabaseDown:
+      threshold: immediate
+      action: page_on_call + activate_failover
+  
+  - BackupVerificationFailed:
+      threshold: 24h
+      action: create_ticket + page_dba
+  
+  - DRTestFailed:
+      threshold: monthly_test_end
+      action: create_ticket + notify_lead
+```
+
+### CloudWatch Dashboard
+
+```json
+{
+  "widgets": [
+    {
+      "type": "metric",
+      "properties": {
+        "metrics": [
+          ["AWS/RDS", "DatabaseConnections"],
+          ["AWS/RDS", "ReplicaLag"],
+          ["ChainLogistics", "BackupSize"],
+          ["ChainLogistics", "RestoreTime"]
+        ],
+        "period": 300,
+        "stat": "Average",
+        "region": "us-east-1",
+        "yAxis": {
+          "left": {
+            "min": 0
+          }
+        }
+      }
+    }
+  ]
+}
+```
+
+## Testing and Maintenance
+
+### Monthly DR Drill
+
+**Objective**: Verify failover procedures
+
+```bash
+#!/bin/bash
+
+echo "=== Monthly DR Drill - $(date) ==="
+
+# 1. Create backup from latest snapshot
+echo "Creating test database from backup..."
+aws rds restore-db-instance-from-db-snapshot \
+  --db-instance-identifier chainlogistics-dr-test-$(date +%s) \
+  --db-snapshot-identifier chainlogistics-latest
+
+# 2. Run validation queries
+echo "Validating data integrity..."
+QUERIES=(
+  "SELECT COUNT(*) FROM products;"
+  "SELECT COUNT(*) FROM events;"
+  "SELECT MAX(created_at) FROM events;"
+)
+
+for query in "${QUERIES[@]}"; do
+  psql -h chainlogistics-dr-test-db -d chainlogistics -c "$query"
+done
+
+# 3. Measure restoration time
+echo "Measuring restoration time..."
+START=$(date +%s)
+# Perform restore operations
+END=$(date +%s)
+echo "Restoration completed in $((END - START)) seconds"
+
+# 4. Cleanup
+echo "Cleaning up test database..."
+aws rds delete-db-instance \
+  --db-instance-identifier chainlogistics-dr-test-db \
+  --skip-final-snapshot
+
+echo "=== DR Drill Complete ==="
+```
+
+### Quarterly Full-Scale Exercise
+
+- Simulate complete primary region failure
+- Activate backup region (controlled test)
+- Measure actual RTO/RPO
+- Document all issues and resolutions
+- Update playbooks
+
+### Annual Executive Briefing
+
+- Present DR capabilities to leadership
+- Review past incidents and resolutions
+- Discuss investment in DR infrastructure
+- Plan for improvements
+
+## Post-Disaster Actions
+
+### Immediate After-Action (First Hour)
+1. ✅ Verify all systems operational
+2. ✅ Confirm data integrity
+3. ✅ Monitor error rates
+4. ✅ Notify users of resolution
+
+### Investigation (First Day)
+1. Collect logs and metrics
+2. Determine root cause
+3. Identify contributing factors
+4. Document timeline
+
+### Remediation (First Week)
+1. Implement permanent fixes
+2. Enhance monitoring/alerting
+3. Update procedures
+4. Conduct team training
+
+### Communication (Ongoing)
+1. Post-mortem report
+2. Customer notification
+3. Transparency blog post
+4. Lessons learned documentation
+
+## Compliance and Auditing
+
+### Compliance Requirements
+- ✅ SOC 2 Type II (annual audit)
+- ✅ GDPR (data protection)
+- ✅ Industry standards (per region)
+
+### Audit Trail
+```sql
+-- Track all DR activities
+CREATE TABLE dr_audit_log (
+  id UUID PRIMARY KEY,
+  event_type VARCHAR(50),
+  severity VARCHAR(20),
+  action_taken TEXT,
+  initiated_by VARCHAR(100),
+  timestamp TIMESTAMPTZ DEFAULT NOW(),
+  status VARCHAR(20),
+  duration_seconds INT,
+  data_loss_bytes BIGINT
+);
+```
+
+## Appendix
+
+### A. Contact Information
+- On-Call DBA: [PagerDuty]
+- Incident Commander: [Slack: #incidents]
+- Infrastructure Team: [Slack: #infrastructure]
+
+### B. Useful Commands
+```bash
+# Check replication status
+psql -h primary-db -c "SELECT * FROM pg_stat_replication;"
+
+# Promote standby
+pg_ctl promote -D /var/lib/postgresql/data
+
+# Check S3 backups
+aws s3 ls s3://chain-logistics-backups/ --recursive
+
+# Monitor RTO
+time pg_restore --dbname=test backup.dump
+```
+
+### C. References
+- AWS RDS Failover: https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Concepts.MultiAZ.html
+- PostgreSQL Replication: https://www.postgresql.org/docs/current/warm-standby.html
+- DR Best Practices: https://aws.amazon.com/blogs/publicsector/establishing-a-disaster-recovery-and-business-continuity-plan/
+
diff --git a/docs/ERROR_HANDLING_IMPLEMENTATION.md b/docs/ERROR_HANDLING_IMPLEMENTATION.md
new file mode 100644
index 00000000..a97bb130
--- /dev/null
+++ b/docs/ERROR_HANDLING_IMPLEMENTATION.md
@@ -0,0 +1,438 @@
+# Error Handling Implementation
+
+## Overview
+
+This document describes the comprehensive error handling and sanitization implementation for the ChainLogistics backend. The implementation prevents information disclosure while providing useful debugging information through structured logging and monitoring.
+
+## Architecture
+
+### Components
+
+1. **Error Types** (`backend/src/error.rs`)
+   - Standardized error codes for programmatic handling
+   - Comprehensive error variants covering all failure scenarios
+   - Automatic error conversions from common library errors
+
+2. **Error Response Format**
+   - Consistent JSON structure across all endpoints
+   - Correlation IDs for request tracking
+   - Sanitized messages for production
+   - Optional details in development mode
+
+3. **Error Middleware** (`backend/src/middleware/error_handler.rs`)
+   - Global error handler for unhandled errors
+   - Request logging with correlation IDs
+   - Panic handler for graceful degradation
+
+4. **Error Monitoring** (`backend/src/monitoring.rs`)
+   - Real-time error tracking and metrics
+   - Error rate calculation
+   - Alert system for error spikes
+   - Historical error analysis
+
+## Error Response Structure
+
+All error responses follow this standardized format:
+
+```json
+{
+  "status": 400,
+  "code": "VALIDATION_FAILED",
+  "message": "Validation failed: Invalid email format",
+  "correlation_id": "550e8400-e29b-41d4-a716-446655440000",
+  "details": "Optional details (only in development)"
+}
+```
+
+### Fields
+
+- **status**: HTTP status code (400, 401, 403, 404, 429, 500, etc.)
+- **code**: Standardized error code for programmatic handling
+- **message**: User-friendly, sanitized error message
+- **correlation_id**: Unique ID for tracking the request across logs
+- **details**: Additional context (only included in debug builds)
+
+## Error Codes
+
+Error codes are organized by category with numeric ranges:
+
+### Authentication & Authorization (1000-1099)
+- `UNAUTHORIZED` (1000): Authentication required
+- `INVALID_CREDENTIALS` (1001): Invalid username or password
+- `TOKEN_EXPIRED` (1002): Session expired
+- `TOKEN_INVALID` (1003): Invalid authentication token
+- `INSUFFICIENT_PERMISSIONS` (1004): Insufficient permissions
+
+### Validation Errors (1100-1199)
+- `VALIDATION_FAILED` (1100): General validation failure
+- `INVALID_INPUT` (1101): Invalid input data
+- `MISSING_REQUIRED_FIELD` (1102): Required field missing
+- `INVALID_FORMAT` (1103): Invalid data format
+- `VALUE_OUT_OF_RANGE` (1104): Value outside acceptable range
+
+### Resource Errors (1200-1299)
+- `RESOURCE_NOT_FOUND` (1200): Resource not found
+- `RESOURCE_ALREADY_EXISTS` (1201): Resource already exists
+- `RESOURCE_CONFLICT` (1202): Resource conflict
+- `RESOURCE_DELETED` (1203): Resource has been deleted
+
+### Rate Limiting (1300-1399)
+- `RATE_LIMIT_EXCEEDED` (1300): Too many requests
+- `QUOTA_EXCEEDED` (1301): API quota exceeded
+
+### Database Errors (1400-1499)
+- `DATABASE_ERROR` (1400): General database error
+- `DATABASE_CONNECTION_FAILED` (1401): Connection failed
+- `DATABASE_QUERY_FAILED` (1402): Query execution failed
+- `DATABASE_CONSTRAINT_VIOLATION` (1403): Constraint violation
+
+### External Service Errors (1500-1599)
+- `EXTERNAL_SERVICE_ERROR` (1500): External service error
+- `BLOCKCHAIN_ERROR` (1501): Blockchain service error
+- `PAYMENT_SERVICE_ERROR` (1502): Payment service error
+
+### Internal Errors (1600-1699)
+- `INTERNAL_SERVER_ERROR` (1600): Unexpected server error
+- `CONFIGURATION_ERROR` (1601): Configuration error
+- `CRYPTOGRAPHY_ERROR` (1602): Cryptographic operation failed
+
+### Business Logic Errors (1700-1799)
+- `BUSINESS_RULE_VIOLATION` (1700): Business rule violated
+- `INVALID_STATE_TRANSITION` (1701): Invalid state transition
+- `OPERATION_NOT_ALLOWED` (1702): Operation not allowed
+
+## Information Sanitization
+
+### Database Errors
+
+Database errors are sanitized to prevent exposure of:
+- Table names and column structures
+- SQL query details
+- Connection strings
+- Internal database structure
+
+Example:
+```rust
+// Internal error (logged)
+"Database error: duplicate key value violates unique constraint \"users_email_key\""
+
+// External response (returned to client)
+"A database error occurred. Please try again later."
+```
+
+### Message Sanitization
+
+User-provided messages are sanitized to remove:
+- File paths: `/usr/local/app/src/main.rs` → `[path]`
+- SQL fragments: `SELECT * FROM users` → `[sql]`
+- Connection strings: `postgres://user:pass@host/db` → `[connection]`
+- API keys/tokens: Long alphanumeric strings → `[token]`
+
+### Stack Traces
+
+Stack traces are:
+- Never included in production responses
+- Logged internally with full details
+- Only included in development builds
+
+## Logging Strategy
+
+### Log Levels
+
+- **ERROR**: Critical errors requiring immediate attention
+  - Database connection failures
+  - Unhandled exceptions
+  - Configuration errors
+  - External service failures
+
+- **WARN**: Potentially harmful situations
+  - Authentication failures
+  - Rate limit violations
+  - Invalid access attempts
+  - High error rates
+
+- **INFO**: Normal operational events
+  - Successful operations
+  - Request completion
+  - Service startup/shutdown
+
+- **DEBUG**: Detailed diagnostic information
+  - Request/response details
+  - Validation failures
+  - Resource not found
+
+### Structured Logging
+
+All logs include structured fields for queryability:
+
+```rust
+tracing::error!(
+    correlation_id = %correlation_id,
+    error = ?err,
+    user_id = %user_id,
+    endpoint = %endpoint,
+    "Database error occurred"
+);
+```
+
+### Correlation IDs
+
+Every request receives a unique correlation ID that:
+- Appears in all logs for that request
+- Is included in error responses
+- Enables end-to-end request tracking
+- Facilitates debugging across services
+
+## Error Monitoring
+
+### Metrics Tracked
+
+1. **Error Counts**: Total errors by error code
+2. **Error Rate**: Errors per minute
+3. **Recent Errors**: Last hour of error events
+4. **Top Errors**: Most frequent error types
+
+### Alerting
+
+Alerts are triggered for:
+- **High Error Rate**: > 10 errors per minute
+- **Critical Errors**: Database, configuration, or internal errors
+- **Error Spikes**: Sudden increase in error rate
+
+Alert cooldown: 5 minutes (configurable)
+
+### Monitoring Endpoints
+
+#### GET `/api/admin/errors/stats`
+Returns error statistics (admin only):
+```json
+{
+  "total_errors": 150,
+  "error_rate": 2.5,
+  "by_code": {
+    "VALIDATION_FAILED": 80,
+    "RESOURCE_NOT_FOUND": 50,
+    "UNAUTHORIZED": 20
+  },
+  "top_errors": [
+    ["VALIDATION_FAILED", 80],
+    ["RESOURCE_NOT_FOUND", 50]
+  ]
+}
+```
+
+#### GET `/api/admin/errors/recent`
+Returns recent error events (admin only):
+```json
+[
+  {
+    "code": "VALIDATION_FAILED",
+    "timestamp": "2024-03-15T10:30:45Z",
+    "correlation_id": "550e8400-e29b-41d4-a716-446655440000",
+    "endpoint": "/api/products"
+  }
+]
+```
+
+#### GET `/api/health/errors`
+Health check with error rate:
+```json
+{
+  "status": "healthy",
+  "error_rate": 2.5,
+  "total_errors": 150
+}
+```
+
+Returns 503 if error rate > 50 errors/minute.
+
+## Usage Examples
+
+### Returning Errors in Handlers
+
+```rust
+pub async fn get_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<Product>, AppError> {
+    // Validation error
+    if id.is_empty() {
+        return Err(AppError::Validation("Product ID is required".to_string()));
+    }
+    
+    // Database error (automatically converted)
+    let product = sqlx::query_as::<_, Product>("SELECT * FROM products WHERE id = $1")
+        .bind(&id)
+        .fetch_one(state.db.pool())
+        .await?; // Converts sqlx::Error to AppError::Database
+    
+    // Not found error
+    if product.deleted_at.is_some() {
+        return Err(AppError::NotFound("Product not found".to_string()));
+    }
+    
+    Ok(Json(product))
+}
+```
+
+### Recording Errors for Monitoring
+
+```rust
+pub async fn create_product(
+    State(state): State<AppState>,
+    Json(request): Json<CreateProductRequest>,
+) -> Result<Json<Product>, AppError> {
+    match state.product_service.create_product(request).await {
+        Ok(product) => Ok(Json(product)),
+        Err(e) => {
+            // Record error for monitoring
+            state.error_monitor.record_error(
+                ErrorCode::DatabaseError,
+                Uuid::new_v4().to_string(),
+                Some("/api/products".to_string()),
+            ).await;
+            
+            Err(e)
+        }
+    }
+}
+```
+
+### Custom Error Conversions
+
+```rust
+impl From<MyCustomError> for AppError {
+    fn from(err: MyCustomError) -> Self {
+        tracing::error!(error = ?err, "Custom error occurred");
+        
+        match err {
+            MyCustomError::NotFound => AppError::NotFound("Resource not found".to_string()),
+            MyCustomError::Invalid => AppError::Validation("Invalid data".to_string()),
+            _ => AppError::Internal("An error occurred".to_string()),
+        }
+    }
+}
+```
+
+## Security Considerations
+
+### What NOT to Expose
+
+❌ **Never expose:**
+- Database schema details (table names, columns)
+- SQL queries or fragments
+- File paths or directory structures
+- Connection strings or credentials
+- Internal service URLs or endpoints
+- Stack traces in production
+- Detailed error messages from libraries
+- System configuration details
+
+✅ **Safe to expose:**
+- HTTP status codes
+- Standardized error codes
+- User-friendly error messages
+- Correlation IDs for support
+- Validation error details (sanitized)
+- Business rule violations
+
+### Development vs Production
+
+**Development Mode** (debug builds):
+- Includes detailed error information
+- Shows stack traces
+- Logs verbose details
+- Includes `details` field in responses
+
+**Production Mode** (release builds):
+- Sanitized error messages only
+- No stack traces
+- Minimal external information
+- No `details` field in responses
+
+## Testing
+
+### Unit Tests
+
+```rust
+#[tokio::test]
+async fn test_error_sanitization() {
+    let msg = "Error in /usr/local/app/src/main.rs";
+    let sanitized = sanitize_message(msg);
+    assert!(sanitized.contains("[path]"));
+    assert!(!sanitized.contains("/usr/local"));
+}
+```
+
+### Integration Tests
+
+```rust
+#[tokio::test]
+async fn test_error_response_format() {
+    let app = create_test_app().await;
+    
+    let response = app
+        .oneshot(Request::builder()
+            .uri("/api/products/invalid")
+            .body(Body::empty())
+            .unwrap())
+        .await
+        .unwrap();
+    
+    assert_eq!(response.status(), StatusCode::NOT_FOUND);
+    
+    let body: ErrorResponse = serde_json::from_slice(
+        &hyper::body::to_bytes(response.into_body()).await.unwrap()
+    ).unwrap();
+    
+    assert_eq!(body.code, ErrorCode::ResourceNotFound);
+    assert!(!body.correlation_id.is_empty());
+}
+```
+
+## Monitoring and Alerting
+
+### Grafana Dashboard
+
+Create dashboards to visualize:
+- Error rate over time
+- Error distribution by code
+- Top error endpoints
+- Correlation ID lookup
+
+### Alert Rules
+
+Configure alerts for:
+```yaml
+- alert: HighErrorRate
+  expr: error_rate > 10
+  for: 5m
+  annotations:
+    summary: "High error rate detected"
+    
+- alert: CriticalError
+  expr: critical_error_count > 0
+  for: 1m
+  annotations:
+    summary: "Critical error occurred"
+```
+
+## Best Practices
+
+1. **Always use correlation IDs** for request tracking
+2. **Log errors at appropriate levels** (error, warn, info, debug)
+3. **Sanitize all user-facing messages** to prevent information disclosure
+4. **Include context in logs** using structured logging
+5. **Monitor error rates** and set up alerts
+6. **Use standardized error codes** for programmatic handling
+7. **Test error paths** as thoroughly as success paths
+8. **Document error conditions** in API documentation
+9. **Review error logs regularly** to identify patterns
+10. **Never log sensitive data** (passwords, tokens, PII)
+
+## Related Documentation
+
+- [Error Handling Standards](./ERROR_HANDLING_STANDARDS.md)
+- [Logging Standards](./LOGGING_STANDARDS.md)
+- [Security Implementation](./SECURITY_IMPLEMENTATION.md)
+- [API Documentation](./API.md)
diff --git a/docs/ERROR_HANDLING_STANDARDS.md b/docs/ERROR_HANDLING_STANDARDS.md
new file mode 100644
index 00000000..ae70f9f3
--- /dev/null
+++ b/docs/ERROR_HANDLING_STANDARDS.md
@@ -0,0 +1,518 @@
+# Error Handling Standards
+
+## Overview
+
+This document defines the consistent error handling patterns used across the ChainLogistics codebase, including smart contracts (Rust/Soroban) and backend services (Rust/Axum).
+
+## Table of Contents
+
+1. [Smart Contract Error Handling](#smart-contract-error-handling)
+2. [Backend Error Handling](#backend-error-handling)
+3. [Error Types and Categories](#error-types-and-categories)
+4. [Error Propagation Strategy](#error-propagation-strategy)
+5. [Error Logging Standards](#error-logging-standards)
+6. [Best Practices](#best-practices)
+
+---
+
+## Smart Contract Error Handling
+
+### Error Definition
+
+Smart contracts use Soroban's `#[contracterror]` macro to define errors:
+
+```rust
+use soroban_sdk::contracterror;
+
+#[contracterror]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+#[repr(u32)]
+pub enum Error {
+    // Core errors (1-10)
+    ProductAlreadyExists = 1,
+    ProductNotFound = 2,
+    Unauthorized = 3,
+    InvalidInput = 4,
+    EventNotFound = 5,
+    NotInitialized = 6,
+    AlreadyInitialized = 7,
+    ContractPaused = 8,
+    ContractNotPaused = 9,
+    
+    // Validation errors (10-30)
+    InvalidProductId = 10,
+    InvalidProductName = 11,
+    InvalidOrigin = 12,
+    // ... more validation errors
+    
+    // Lifecycle errors (40-50)
+    ProductDeactivated = 40,
+    DeactivationReasonRequired = 41,
+    ProductAlreadyActive = 42,
+    
+    // Upgrade errors (50-60)
+    InvalidUpgrade = 50,
+    UpgradeInProgress = 51,
+    // ... more upgrade errors
+    
+    // Multi-sig errors (60-70)
+    MultiSigNotConfigured = 60,
+    NotSigner = 61,
+    // ... more multi-sig errors
+}
+```
+
+### Error Ranges
+
+Error codes are organized by category with numeric ranges:
+
+- **1-10**: Core operational errors
+- **10-30**: Validation errors
+- **30-40**: Batch operation errors
+- **40-50**: Product lifecycle errors
+- **50-60**: Upgrade/migration errors
+- **60-70**: Multi-signature errors
+
+### Error Usage Patterns
+
+#### Returning Errors
+
+All contract functions that can fail should return `Result<T, Error>`:
+
+```rust
+pub fn get_product(env: Env, id: String) -> Result<Product, Error> {
+    storage::get_product(&env, &id).ok_or(Error::ProductNotFound)
+}
+```
+
+#### Early Validation
+
+Validate inputs early to fail fast and save gas:
+
+```rust
+pub fn register_product(env: Env, owner: Address, config: ProductConfig) -> Result<Product, Error> {
+    owner.require_auth();
+    
+    // Validate inputs early
+    ValidationContract::validate_product_config(&config)?;
+    
+    // Check for duplicates
+    if storage::has_product(&env, &config.id) {
+        return Err(Error::ProductAlreadyExists);
+    }
+    
+    // ... rest of implementation
+}
+```
+
+#### Helper Functions
+
+Use helper functions for common error checks:
+
+```rust
+fn require_not_paused(env: &Env) -> Result<(), Error> {
+    if storage::is_paused(env) {
+        return Err(Error::ContractPaused);
+    }
+    Ok(())
+}
+
+fn require_admin(env: &Env, caller: &Address) -> Result<(), Error> {
+    let admin = storage::get_admin(env).ok_or(Error::NotInitialized)?;
+    if &admin == caller {
+        caller.require_auth();
+        return Ok(());
+    }
+    Err(Error::Unauthorized)
+}
+
+fn require_owner(product: &Product, caller: &Address) -> Result<(), Error> {
+    caller.require_auth();
+    if &product.owner != caller {
+        return Err(Error::Unauthorized);
+    }
+    Ok(())
+}
+```
+
+---
+
+## Backend Error Handling
+
+### Error Definition
+
+Backend services use `thiserror` for error definitions:
+
+```rust
+use thiserror::Error;
+
+#[derive(Debug, thiserror::Error)]
+pub enum AppError {
+    #[error("Database error: {0}")]
+    Database(String),
+    
+    #[error("Authentication failed")]
+    Unauthorized,
+    
+    #[error("Forbidden: {0}")]
+    Forbidden(String),
+    
+    #[error("Not found: {0}")]
+    NotFound(String),
+    
+    #[error("Validation error: {0}")]
+    Validation(String),
+    
+    #[error("Rate limit exceeded")]
+    RateLimit,
+    
+    #[error("Internal server error: {0}")]
+    Internal(String),
+    
+    #[error("Bad request: {0}")]
+    BadRequest(String),
+}
+```
+
+### HTTP Response Mapping
+
+Implement `IntoResponse` to map errors to HTTP responses:
+
+```rust
+use axum::{http::StatusCode, response::{IntoResponse, Response}, Json};
+use serde_json::json;
+
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, message): (StatusCode, String) = match self {
+            AppError::Database(msg) => {
+                tracing::error!("Database error: {}", msg);
+                (StatusCode::INTERNAL_SERVER_ERROR, "Internal server error".to_string())
+            }
+            AppError::Unauthorized => {
+                tracing::warn!("Unauthorized access attempt");
+                (StatusCode::UNAUTHORIZED, "Unauthorized".to_string())
+            }
+            AppError::Forbidden(msg) => {
+                tracing::warn!("Forbidden access attempt: {}", msg);
+                (StatusCode::FORBIDDEN, msg)
+            }
+            AppError::NotFound(msg) => (StatusCode::NOT_FOUND, msg),
+            AppError::Validation(msg) => (StatusCode::BAD_REQUEST, msg),
+            AppError::RateLimit => (StatusCode::TOO_MANY_REQUESTS, "Rate limit exceeded".to_string()),
+            AppError::Internal(msg) => {
+                tracing::error!("Internal error: {}", msg);
+                (StatusCode::INTERNAL_SERVER_ERROR, "Internal server error".to_string())
+            }
+            AppError::BadRequest(msg) => (StatusCode::BAD_REQUEST, msg),
+        };
+
+        let body = Json(json!({
+            "error": message,
+            "status": status.as_u16()
+        }));
+
+        (status, body).into_response()
+    }
+}
+```
+
+### Error Conversions
+
+Implement `From` traits for common error types:
+
+```rust
+impl From<sqlx::Error> for AppError {
+    fn from(err: sqlx::Error) -> Self {
+        AppError::Database(err.to_string())
+    }
+}
+
+impl From<serde_json::Error> for AppError {
+    fn from(err: serde_json::Error) -> Self {
+        AppError::BadRequest(format!("JSON error: {}", err))
+    }
+}
+
+impl From<bcrypt::BcryptError> for AppError {
+    fn from(err: bcrypt::BcryptError) -> Self {
+        AppError::Internal(format!("Password hashing error: {}", err))
+    }
+}
+```
+
+### Error Response Format
+
+All error responses follow this JSON format:
+
+```json
+{
+  "error": "Error message",
+  "status": 400
+}
+```
+
+---
+
+## Error Types and Categories
+
+### Smart Contract Error Categories
+
+| Category | Range | Description |
+|----------|-------|-------------|
+| Core | 1-10 | Fundamental operational errors |
+| Validation | 10-30 | Input validation failures |
+| Batch | 30-40 | Batch operation errors |
+| Lifecycle | 40-50 | Product lifecycle errors |
+| Upgrade | 50-60 | Contract upgrade errors |
+| Multi-Sig | 60-70 | Multi-signature errors |
+
+### Backend Error Categories
+
+| Error Type | HTTP Status | When to Use |
+|------------|--------------|-------------|
+| `BadRequest` | 400 | Invalid input data |
+| `Unauthorized` | 401 | Missing or invalid authentication |
+| `Forbidden` | 403 | Authenticated but insufficient permissions |
+| `NotFound` | 404 | Resource not found |
+| `RateLimit` | 429 | Too many requests |
+| `Internal` | 500 | Unexpected server errors |
+| `Database` | 500 | Database-related errors |
+| `Validation` | 400 | Validation failures |
+
+---
+
+## Error Propagation Strategy
+
+### Smart Contract Propagation
+
+1. **Validate Early**: Check all preconditions at the start of functions
+2. **Use `?` Operator**: Propagate errors using the `?` operator
+3. **Context Preservation**: Errors maintain their original context
+4. **Gas Efficiency**: Fail fast to save gas
+
+```rust
+pub fn add_tracking_event(
+    env: Env,
+    actor: Address,
+    product_id: String,
+    // ... other parameters
+) -> Result<u64, Error> {
+    // Early validation
+    require_not_paused(&env)?;
+    let product = read_product(&env, &product_id)?;
+    require_can_add_event(&env, &product_id, &product, &actor)?;
+    
+    // Validate inputs
+    ValidationContract::validate_event_location(&location)?;
+    ValidationContract::validate_event_note(&note)?;
+    ValidationContract::validate_metadata(&metadata)?;
+    
+    // ... rest of implementation
+}
+```
+
+### Backend Propagation
+
+1. **Use `?` Operator**: Propagate errors using the `?` operator
+2. **Contextual Errors**: Add context when converting errors
+3. **Logging**: Log errors at appropriate levels
+4. **User-Friendly Messages**: Return generic messages for internal errors
+
+```rust
+pub async fn get_product(
+    State(state): State<AppState>,
+    Path(id): Path<String>,
+) -> Result<Json<Product>, AppError> {
+    let product = state.product_service
+        .get_product(&id)
+        .await
+        .map_err(|e| {
+            tracing::error!("Failed to get product {}: {}", id, e);
+            AppError::NotFound(format!("Product {} not found", id))
+        })?;
+    
+    Ok(Json(product))
+}
+```
+
+---
+
+## Error Logging Standards
+
+### Logging Levels
+
+| Level | When to Use | Examples |
+|-------|-------------|----------|
+| `error!` | Errors that prevent operation | Database failures, critical bugs |
+| `warn!` | Potentially harmful situations | Unauthorized attempts, rate limits |
+| `info!` | Informational messages | Server start, successful operations |
+| `debug!` | Detailed diagnostic information | Function entry/exit, variable values |
+| `trace!` | Very detailed tracing | Loop iterations, detailed state |
+
+### Smart Contract Logging
+
+Smart contracts emit events for logging:
+
+```rust
+env.events().publish(
+    (Symbol::new(&env, "product_registered"), product_id.clone()),
+    product.clone(),
+);
+```
+
+### Backend Logging
+
+Backend uses `tracing` for structured logging:
+
+```rust
+// Error logging
+tracing::error!("Database error: {}", msg);
+
+// Warning logging
+tracing::warn!("Unauthorized access attempt from IP: {}", ip);
+
+// Info logging
+tracing::info!("Product {} registered by user {}", product_id, user_id);
+
+// Debug logging
+tracing::debug!("Processing request: {:?}", request);
+
+// Structured logging with fields
+tracing::error!(
+    error = %err,
+    user_id = %user_id,
+    product_id = %product_id,
+    "Failed to register product"
+);
+```
+
+### Log Format
+
+Logs should follow this structured format:
+
+```
+TIMESTAMP LEVEL [MODULE] MESSAGE key1=value1 key2=value2
+```
+
+Example:
+```
+2024-03-15T10:30:45.123Z ERROR [database] Failed to connect to PostgreSQL host=localhost port=5432
+```
+
+---
+
+## Best Practices
+
+### Smart Contracts
+
+1. **Define All Errors Upfront**: All possible errors should be defined in the Error enum
+2. **Use Descriptive Error Names**: Error names should clearly indicate the problem
+3. **Validate Inputs Early**: Fail fast to save gas
+4. **Use Helper Functions**: Extract common validation logic
+5. **Document Error Conditions**: Document when each error is returned
+
+### Backend
+
+1. **Never Expose Internal Details**: Return generic messages for internal errors
+2. **Log at Appropriate Levels**: Use correct log levels for different situations
+3. **Include Context**: Add relevant context to log messages
+4. **Use Structured Logging**: Use structured logging with key-value pairs
+5. **Implement Error Conversions**: Use `From` traits for error conversions
+
+### General
+
+1. **Be Consistent**: Use the same error handling patterns throughout the codebase
+2. **Document Everything**: Document error types, when they occur, and how to handle them
+3. **Monitor Errors**: Set up monitoring and alerting for errors
+4. **Learn from Errors**: Review error logs to identify and fix common issues
+5. **Test Error Paths**: Write tests for all error conditions
+
+---
+
+## Examples
+
+### Smart Contract Example
+
+```rust
+pub fn register_product(
+    env: Env,
+    owner: Address,
+    config: ProductConfig,
+) -> Result<Product, Error> {
+    // Authentication
+    owner.require_auth();
+    
+    // Validation
+    ValidationContract::validate_product_config(&config)?;
+    
+    // Duplicate check
+    if storage::has_product(&env, &config.id) {
+        return Err(Error::ProductAlreadyExists);
+    }
+    
+    // Build product
+    let product = Product {
+        id: config.id.clone(),
+        name: config.name,
+        // ... other fields
+    };
+    
+    // Storage
+    storage::put_product(&env, &product);
+    
+    // Emit event
+    env.events().publish(
+        (Symbol::new(&env, "product_registered"), config.id.clone()),
+        product.clone(),
+    );
+    
+    Ok(product)
+}
+```
+
+### Backend Example
+
+```rust
+pub async fn register_product(
+    State(state): State<AppState>,
+    Json(request): Json<RegisterProductRequest>,
+) -> Result<Json<Product>, AppError> {
+    // Validate input
+    request.validate()?;
+    
+    // Check for duplicates
+    if state.product_service.product_exists(&request.id).await? {
+        return Err(AppError::BadRequest(format!(
+            "Product with ID {} already exists",
+            request.id
+        )));
+    }
+    
+    // Create product
+    let product = state.product_service
+        .create_product(request)
+        .await
+        .map_err(|e| {
+            tracing::error!(
+                error = %e,
+                product_id = %request.id,
+                "Failed to create product"
+            );
+            AppError::Internal("Failed to create product".to_string())
+        })?;
+    
+    tracing::info!("Product {} created successfully", product.id);
+    
+    Ok(Json(product))
+}
+```
+
+---
+
+## Related Documentation
+
+- [Smart Contract Documentation](./SMART_CONTRACTS.md)
+- [API Documentation](./API.md)
+- [Logging Standards](./LOGGING_STANDARDS.md)
+- [Architecture Documentation](./ARCHITECTURE.md)
diff --git a/docs/FINANCIAL_INTEGRATION.md b/docs/FINANCIAL_INTEGRATION.md
new file mode 100644
index 00000000..aea290e2
--- /dev/null
+++ b/docs/FINANCIAL_INTEGRATION.md
@@ -0,0 +1,329 @@
+# Supply Chain Financial Integration Guide
+
+## Overview
+
+ChainLogistics now includes comprehensive financial integration capabilities, enabling supply chain financing, invoice management, and multi-currency payment processing. This transforms the platform from a tracking-only solution to a complete supply chain finance platform.
+
+## Features
+
+### Payment Methods
+
+Support for multiple payment methods:
+- Bank transfers
+- Credit/debit cards
+- Cryptocurrency payments
+- Wire transfers
+
+### Transaction Management
+
+- Real-time transaction tracking
+- Multi-currency support
+- Blockchain transaction linking
+- Transaction history and reconciliation
+
+### Invoice Management
+
+- Invoice creation and tracking
+- Automated invoice numbering
+- Due date management
+- Payment status tracking
+- Invoice line items
+
+### Supply Chain Financing
+
+- Invoice factoring
+- Supply chain financing requests
+- Working capital financing
+- Financing approval workflow
+- Interest rate management
+
+### Wallet Integration
+
+- Multi-chain wallet balance tracking
+- Real-time balance updates
+- Token symbol support
+- Wallet address management
+
+## API Endpoints
+
+### Transactions
+
+#### Create Transaction
+
+```bash
+POST /api/v1/admin/transactions
+Content-Type: application/json
+
+{
+  "transaction_type": "payment",
+  "amount": "1000.00",
+  "currency": "USD"
+}
+```
+
+Response:
+```json
+{
+  "id": "uuid",
+  "user_id": "uuid",
+  "transaction_type": "payment",
+  "amount": "1000.00",
+  "currency": "USD",
+  "status": "pending",
+  "blockchain_network": null,
+  "blockchain_tx_hash": null
+}
+```
+
+#### List Transactions
+
+```bash
+GET /api/v1/transactions
+```
+
+#### Get Transaction
+
+```bash
+GET /api/v1/transactions/:id
+```
+
+### Invoices
+
+#### Create Invoice
+
+```bash
+POST /api/v1/admin/invoices
+Content-Type: application/json
+
+{
+  "amount": "5000.00",
+  "due_date": "2024-12-31"
+}
+```
+
+Response:
+```json
+{
+  "id": "uuid",
+  "user_id": "uuid",
+  "invoice_number": "INV-1704067200",
+  "amount": "5000.00",
+  "currency": "USD",
+  "status": "draft",
+  "due_date": "2024-12-31"
+}
+```
+
+### Financing
+
+#### Request Financing
+
+```bash
+POST /api/v1/admin/financing/request
+Content-Type: application/json
+
+{
+  "financing_type": "invoice_factoring",
+  "amount": "5000.00"
+}
+```
+
+Response:
+```json
+{
+  "id": "uuid",
+  "user_id": "uuid",
+  "financing_type": "invoice_factoring",
+  "amount_requested": "5000.00",
+  "amount_approved": null,
+  "status": "pending",
+  "interest_rate": null
+}
+```
+
+## Database Schema
+
+### payment_methods
+
+```sql
+CREATE TABLE payment_methods (
+  id UUID PRIMARY KEY,
+  user_id UUID NOT NULL,
+  payment_type VARCHAR(50), -- 'bank_transfer', 'card', 'crypto', 'wire'
+  provider VARCHAR(100),
+  provider_id VARCHAR(255),
+  is_default BOOLEAN,
+  is_active BOOLEAN,
+  created_at TIMESTAMP,
+  updated_at TIMESTAMP
+);
+```
+
+### transactions
+
+```sql
+CREATE TABLE transactions (
+  id UUID PRIMARY KEY,
+  user_id UUID NOT NULL,
+  transaction_type VARCHAR(50), -- 'payment', 'refund', 'fee', 'financing'
+  amount DECIMAL(20, 8),
+  currency VARCHAR(10),
+  status VARCHAR(50), -- 'pending', 'completed', 'failed', 'cancelled'
+  payment_method_id UUID,
+  blockchain_network VARCHAR(50),
+  blockchain_tx_hash VARCHAR(255),
+  description TEXT,
+  metadata JSONB,
+  created_at TIMESTAMP,
+  updated_at TIMESTAMP,
+  completed_at TIMESTAMP
+);
+```
+
+### invoices
+
+```sql
+CREATE TABLE invoices (
+  id UUID PRIMARY KEY,
+  user_id UUID NOT NULL,
+  invoice_number VARCHAR(100) UNIQUE,
+  amount DECIMAL(20, 8),
+  currency VARCHAR(10),
+  status VARCHAR(50), -- 'draft', 'sent', 'paid', 'overdue', 'cancelled'
+  due_date DATE,
+  description TEXT,
+  line_items JSONB,
+  created_at TIMESTAMP,
+  updated_at TIMESTAMP,
+  paid_at TIMESTAMP
+);
+```
+
+### financing_requests
+
+```sql
+CREATE TABLE financing_requests (
+  id UUID PRIMARY KEY,
+  user_id UUID NOT NULL,
+  invoice_id UUID,
+  financing_type VARCHAR(50), -- 'invoice_factoring', 'supply_chain_financing', 'working_capital'
+  amount_requested DECIMAL(20, 8),
+  amount_approved DECIMAL(20, 8),
+  currency VARCHAR(10),
+  status VARCHAR(50), -- 'pending', 'approved', 'rejected', 'funded'
+  interest_rate DECIMAL(5, 2),
+  term_days INTEGER,
+  created_at TIMESTAMP,
+  updated_at TIMESTAMP,
+  approved_at TIMESTAMP,
+  funded_at TIMESTAMP
+);
+```
+
+### wallet_balances
+
+```sql
+CREATE TABLE wallet_balances (
+  id UUID PRIMARY KEY,
+  user_id UUID NOT NULL,
+  blockchain_network VARCHAR(50),
+  wallet_address VARCHAR(255),
+  balance DECIMAL(20, 8),
+  token_symbol VARCHAR(20),
+  last_synced TIMESTAMP
+);
+```
+
+## Frontend Components
+
+### TransactionHistory
+
+Display user's transaction history:
+
+```tsx
+import { TransactionHistory } from '@/components/financial/TransactionHistory';
+
+<TransactionHistory />
+```
+
+### InvoiceForm
+
+Create new invoices:
+
+```tsx
+import { InvoiceForm } from '@/components/financial/InvoiceForm';
+
+<InvoiceForm />
+```
+
+## Integration with Blockchain
+
+### Linking Blockchain Transactions
+
+When a transaction is processed on-chain:
+
+```typescript
+// Update transaction with blockchain details
+await updateTransaction(transactionId, {
+  status: 'confirmed',
+  blockchain_network: 'ethereum',
+  blockchain_tx_hash: '0x...',
+});
+```
+
+### Multi-Currency Support
+
+Transactions support any currency:
+
+```typescript
+const transaction = await createTransaction({
+  amount: '1000',
+  currency: 'EUR', // or USD, GBP, JPY, etc.
+  transaction_type: 'payment',
+});
+```
+
+## Revenue Model
+
+### Transaction Fees
+
+- 2% fee on all transactions
+- Reduced to 1% for premium tier users
+- 0.5% for enterprise customers
+
+### Financing Margins
+
+- 3-5% interest on invoice factoring
+- 2-4% interest on supply chain financing
+- 1-3% interest on working capital
+
+## Compliance
+
+All financial transactions are:
+- Logged in audit trail
+- Subject to compliance checks
+- Encrypted in transit and at rest
+- Compliant with PCI DSS standards
+
+## Troubleshooting
+
+### Transaction Failures
+
+1. Check payment method is active
+2. Verify sufficient balance
+3. Check transaction amount limits
+4. Review error logs
+
+### Invoice Issues
+
+1. Verify due date is in future
+2. Check invoice number uniqueness
+3. Ensure amount is positive
+4. Verify user permissions
+
+### Financing Requests
+
+1. Check financing type is valid
+2. Verify amount is reasonable
+3. Review user credit history
+4. Check for existing pending requests
diff --git a/docs/INFRASTRUCTURE.md b/docs/INFRASTRUCTURE.md
new file mode 100644
index 00000000..6e17fc4f
--- /dev/null
+++ b/docs/INFRASTRUCTURE.md
@@ -0,0 +1,433 @@
+# Infrastructure Documentation
+
+## Overview
+
+This document provides a comprehensive guide to the ChainLogistics infrastructure, covering deployment strategies, monitoring, scaling, and operational best practices.
+
+## Quick Links
+
+- [Deployment Guide](./DEPLOYMENT_GUIDE.md) - Complete deployment instructions
+- [Digital Twin Platform](./DIGITAL_TWIN.md) - Digital twin features and API
+- [Architecture](./ARCHITECTURE.md) - System architecture overview
+- [API Documentation](./API.md) - REST API reference
+
+## Infrastructure Components
+
+### 1. Application Tier
+
+**Backend Services (Rust/Axum)**
+
+- High-performance REST API
+- WebSocket support for real-time updates
+- Digital twin simulation engine
+- Async request handling with Tokio
+
+**Frontend Application (Next.js)**
+
+- Server-side rendering
+- Static site generation
+- API routes for BFF pattern
+- Real-time UI updates
+
+### 2. Data Tier
+
+**PostgreSQL Database**
+
+- Primary data store
+- ACID compliance
+- Full-text search
+- JSON support for flexible schemas
+
+**Redis Cache**
+
+- Session storage
+- API response caching
+- Rate limiting
+- Real-time data
+
+**Blockchain (Stellar/Soroban)**
+
+- Immutable audit trail
+- Smart contract execution
+- Decentralized consensus
+
+### 3. Monitoring & Observability
+
+**Prometheus**
+
+- Metrics collection
+- Time-series database
+- Alerting rules
+
+**Grafana**
+
+- Metrics visualization
+- Custom dashboards
+- Alert management
+
+**Logging Stack**
+
+- Structured logging
+- Log aggregation
+- Search and analysis
+
+## Deployment Strategies
+
+### Development Environment
+
+```bash
+# Start all services with Docker Compose
+docker-compose up -d
+
+# Services available at:
+# - Frontend: http://localhost:3000
+# - Backend API: http://localhost:3001
+# - PostgreSQL: localhost:5432
+# - Redis: localhost:6379
+# - Prometheus: http://localhost:9090
+# - Grafana: http://localhost:3002
+```
+
+### Staging Environment
+
+- Kubernetes cluster with 3 nodes
+- Automated deployments via CI/CD
+- Blue-green deployment strategy
+- Synthetic monitoring
+
+### Production Environment
+
+- Multi-region Kubernetes deployment
+- Auto-scaling based on metrics
+- Rolling updates with health checks
+- Disaster recovery procedures
+
+## Scaling Strategies
+
+### Horizontal Scaling
+
+**Application Tier**
+
+- Stateless API servers
+- Load balancer distribution
+- Auto-scaling based on CPU/memory
+
+**Database Tier**
+
+- Read replicas for queries
+- Connection pooling
+- Query optimization
+
+### Vertical Scaling
+
+- Increase pod resources
+- Optimize database configuration
+- Tune JVM/runtime parameters
+
+### Caching Strategy
+
+**Multi-Level Caching**
+
+1. Browser cache (static assets)
+2. CDN cache (global distribution)
+3. Application cache (Redis)
+4. Database query cache
+
+## High Availability
+
+### Database HA
+
+- Primary-replica configuration
+- Automatic failover
+- Point-in-time recovery
+- Regular backups
+
+### Application HA
+
+- Multiple replicas per service
+- Health checks and readiness probes
+- Circuit breakers for dependencies
+- Graceful degradation
+
+### Network HA
+
+- Multi-AZ deployment
+- Load balancer redundancy
+- DNS failover
+- DDoS protection
+
+## Security
+
+### Network Security
+
+- VPC isolation
+- Security groups
+- Network policies
+- TLS/SSL encryption
+
+### Application Security
+
+- Authentication (JWT)
+- Authorization (RBAC)
+- API rate limiting
+- Input validation
+
+### Data Security
+
+- Encryption at rest
+- Encryption in transit
+- Secrets management
+- Regular security audits
+
+## Monitoring & Alerting
+
+### Key Metrics
+
+**Application Metrics**
+
+- Request rate
+- Response time (P50, P95, P99)
+- Error rate
+- Active connections
+
+**Infrastructure Metrics**
+
+- CPU utilization
+- Memory usage
+- Disk I/O
+- Network throughput
+
+**Business Metrics**
+
+- Products registered
+- Events tracked
+- Simulations run
+- API usage
+
+### Alert Rules
+
+**Critical Alerts**
+
+- Service down
+- Database connection failure
+- High error rate (>5%)
+- Disk space critical (<10%)
+
+**Warning Alerts**
+
+- High response time (>2s)
+- Memory usage high (>80%)
+- CPU usage high (>70%)
+- Slow queries
+
+## Backup & Recovery
+
+### Backup Strategy
+
+**Database Backups**
+
+- Daily full backups
+- Hourly incremental backups
+- 30-day retention
+- Off-site storage
+
+**Application Backups**
+
+- Configuration backups
+- Secrets backup (encrypted)
+- Docker image registry
+
+### Recovery Procedures
+
+**Database Recovery**
+
+1. Identify backup point
+2. Stop application
+3. Restore database
+4. Verify data integrity
+5. Restart application
+
+**Application Recovery**
+
+1. Identify last known good version
+2. Rollback deployment
+3. Verify functionality
+4. Monitor for issues
+
+## Cost Optimization
+
+### Resource Optimization
+
+- Right-size instances
+- Use spot instances for non-critical workloads
+- Implement auto-scaling
+- Clean up unused resources
+
+### Storage Optimization
+
+- Compress backups
+- Archive old data
+- Use appropriate storage tiers
+- Implement data lifecycle policies
+
+### Network Optimization
+
+- Use CDN for static assets
+- Optimize API payloads
+- Implement caching
+- Compress responses
+
+## Operational Procedures
+
+### Deployment Checklist
+
+- [ ] Run tests
+- [ ] Update documentation
+- [ ] Create backup
+- [ ] Deploy to staging
+- [ ] Run smoke tests
+- [ ] Deploy to production
+- [ ] Monitor metrics
+- [ ] Verify functionality
+
+### Incident Response
+
+1. **Detection**: Alert triggered
+2. **Assessment**: Determine severity
+3. **Response**: Execute runbook
+4. **Communication**: Update stakeholders
+5. **Resolution**: Fix issue
+6. **Post-mortem**: Document learnings
+
+### Maintenance Windows
+
+- Schedule during low-traffic periods
+- Notify users in advance
+- Have rollback plan ready
+- Monitor closely during and after
+
+## Performance Tuning
+
+### Database Tuning
+
+```sql
+-- Analyze query performance
+EXPLAIN ANALYZE SELECT ...;
+
+-- Update statistics
+ANALYZE products;
+
+-- Reindex tables
+REINDEX TABLE products;
+```
+
+### Application Tuning
+
+```rust
+// Connection pool configuration
+let pool = PgPoolOptions::new()
+    .max_connections(20)
+    .min_connections(5)
+    .acquire_timeout(Duration::from_secs(30))
+    .connect(&database_url)
+    .await?;
+```
+
+### Cache Tuning
+
+```bash
+# Redis configuration
+maxmemory 2gb
+maxmemory-policy allkeys-lru
+```
+
+## Troubleshooting Guide
+
+### Common Issues
+
+**High CPU Usage**
+
+- Check for slow queries
+- Review application logs
+- Analyze traffic patterns
+- Scale horizontally
+
+**Memory Leaks**
+
+- Monitor heap usage
+- Review connection pools
+- Check for unclosed resources
+- Restart affected pods
+
+**Network Issues**
+
+- Verify DNS resolution
+- Check security groups
+- Review load balancer logs
+- Test connectivity
+
+### Debug Commands
+
+```bash
+# Check pod status
+kubectl get pods -n chainlogistics
+
+# View logs
+kubectl logs -f deployment/chainlog-backend -n chainlogistics
+
+# Execute commands in pod
+kubectl exec -it <pod-name> -n chainlogistics -- /bin/bash
+
+# Port forward for debugging
+kubectl port-forward svc/chainlog-backend 3001:80 -n chainlogistics
+```
+
+## Compliance & Governance
+
+### Audit Logging
+
+- All API requests logged
+- Database changes tracked
+- Admin actions recorded
+- Logs retained for 1 year
+
+### Compliance Requirements
+
+- GDPR compliance
+- SOC 2 Type II
+- ISO 27001
+- PCI DSS (if applicable)
+
+### Data Retention
+
+- Active data: Indefinite
+- Archived data: 7 years
+- Logs: 1 year
+- Backups: 30 days
+
+## Future Improvements
+
+### Planned Enhancements
+
+- Multi-region deployment
+- Advanced caching strategies
+- Machine learning integration
+- Enhanced monitoring
+
+### Technology Upgrades
+
+- Kubernetes version upgrades
+- Database version upgrades
+- Framework updates
+- Security patches
+
+## Support & Resources
+
+- **Documentation**: https://docs.chainlogistics.com
+- **Status Page**: https://status.chainlogistics.com
+- **Support Email**: devops@chainlogistics.com
+- **Emergency Hotline**: +1-XXX-XXX-XXXX
+
+## License
+
+MIT License - See LICENSE file for details
diff --git a/docs/LOGGING_STANDARDS.md b/docs/LOGGING_STANDARDS.md
new file mode 100644
index 00000000..16a115fe
--- /dev/null
+++ b/docs/LOGGING_STANDARDS.md
@@ -0,0 +1,417 @@
+# Logging Standards
+
+## Overview
+
+This document defines the logging standards and practices used across the ChainLogistics project. The backend uses the `tracing` crate for structured logging, providing consistent, queryable logs across all services.
+
+## Table of Contents
+
+1. [Logging Levels](#logging-levels)
+2. [Structured Logging](#structured-logging)
+3. [Log Format](#log-format)
+4. [Logging Configuration](#logging-configuration)
+5. [Best Practices](#best-practices)
+6. [Examples](#examples)
+7. [Log Aggregation](#log-aggregation)
+
+---
+
+## Logging Levels
+
+### Level Definitions
+
+| Level | Severity | When to Use | Examples |
+|-------|----------|-------------|----------|
+| `error!` | Critical | Errors that prevent operation completion | Database connection failures, critical bugs |
+| `warn!` | Warning | Potentially harmful situations | Unauthorized access attempts, rate limits |
+| `info!` | Informational | Normal operational events | Server start, successful operations |
+| `debug!` | Debug | Detailed diagnostic information | Function entry/exit, variable values |
+| `trace!` | Trace | Very detailed tracing | Loop iterations, detailed state changes |
+
+### Level Guidelines
+
+- **Use `error!`** for errors that require immediate attention or prevent the application from functioning
+- **Use `warn!`** for issues that don't prevent operation but may indicate problems
+- **Use `info!`` for significant events that track the application's lifecycle
+- **Use `debug!`** for detailed information useful during development and troubleshooting
+- **Use `trace!`** for extremely detailed information, typically only during deep debugging
+
+---
+
+## Structured Logging
+
+### Key-Value Fields
+
+Structured logging uses key-value pairs to provide context:
+
+```rust
+tracing::info!(
+    user_id = %user_id,
+    product_id = %product_id,
+    action = "created",
+    "Product created successfully"
+);
+```
+
+### Field Types
+
+- **String fields**: Use `key = "value"` syntax
+- **Display fields**: Use `key = %value` syntax (uses `Display` trait)
+- **Debug fields**: Use `key = ?value` syntax (uses `Debug` trait)
+
+### Field Naming Conventions
+
+- Use `snake_case` for field names
+- Use descriptive, meaningful names
+- Include units when applicable (e.g., `duration_ms`, `size_bytes`)
+- Use consistent field names across the codebase
+
+---
+
+## Log Format
+
+### Standard Format
+
+Logs follow this structured format:
+
+```
+TIMESTAMP LEVEL [MODULE] MESSAGE key1=value1 key2=value2
+```
+
+### Example
+
+```
+2024-03-15T10:30:45.123Z INFO [database] User created user_id=123 email="user@example.com"
+2024-03-15T10:30:46.456Z ERROR [api] Failed to process request error=DatabaseError path="/api/products"
+2024-03-15T10:30:47.789Z WARN [auth] Rate limit exceeded ip="192.168.1.1" user_id=456
+```
+
+### Format Components
+
+- **TIMESTAMP**: ISO 8601 format with timezone
+- **LEVEL**: Log level in uppercase (ERROR, WARN, INFO, DEBUG, TRACE)
+- **MODULE**: The module or component generating the log
+- **MESSAGE**: Human-readable message
+- **FIELDS**: Key-value pairs providing additional context
+
+---
+
+## Logging Configuration
+
+### Environment Variables
+
+Configure logging behavior using environment variables:
+
+```bash
+# Set log level (default: info)
+RUST_LOG=info
+
+# Set log level for specific modules
+RUST_LOG=chainlogistics=debug,sqlx=warn
+
+# Enable trace logging
+RUST_LOG=trace
+```
+
+### Common Configurations
+
+```bash
+# Production
+RUST_LOG=chainlogistics=info,sqlx=warn
+
+# Development
+RUST_LOG=chainlogistics=debug,sqlx=debug
+
+# Debugging
+RUST_LOG=chainlogistics=trace,sqlx=trace
+```
+
+### Initialization
+
+The backend initializes tracing in `main.rs`:
+
+```rust
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    // Initialize tracing
+    tracing_subscriber::fmt()
+        .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
+        .init();
+    
+    // ... rest of application
+}
+```
+
+---
+
+## Best Practices
+
+### Do's
+
+- **Log at appropriate levels**: Use the correct level for the situation
+- **Include context**: Add relevant key-value pairs to provide context
+- **Be consistent**: Use the same field names and formats across the codebase
+- **Log errors with details**: Include error information when logging errors
+- **Use structured fields**: Prefer structured fields over string interpolation
+- **Log security events**: Log authentication, authorization, and security-related events
+
+### Don'ts
+
+- **Don't log sensitive data**: Never log passwords, API keys, or personal information
+- **Don't log excessively**: Avoid logging at trace/debug levels in production
+- **Don't use string interpolation**: Use structured fields instead of `format!`
+- **Don't log in hot paths**: Avoid logging in performance-critical code paths
+- **Don't ignore errors**: Always log errors appropriately
+
+### Sensitive Data
+
+Never log sensitive information:
+
+```rust
+// BAD - Logs password
+tracing::info!("User login: {}", password);
+
+// GOOD - Logs without password
+tracing::info!(
+    user_id = %user.id,
+    "User logged in"
+);
+```
+
+### Performance Considerations
+
+- Use lazy evaluation for expensive operations
+- Consider using `span!` for tracking operations
+- Disable debug/trace logging in production
+
+---
+
+## Examples
+
+### Basic Logging
+
+```rust
+// Info level
+tracing::info!("Server started on port 8080");
+
+// Error level
+tracing::error!("Failed to connect to database");
+
+// Warning level
+tracing::warn!("Rate limit exceeded for user {}", user_id);
+```
+
+### Structured Logging
+
+```rust
+// With fields
+tracing::info!(
+    user_id = %user.id,
+    product_id = %product.id,
+    "Product created"
+);
+
+// With error
+tracing::error!(
+    error = %err,
+    user_id = %user_id,
+    "Failed to create product"
+);
+
+// With multiple fields
+tracing::debug!(
+    request_id = %request_id,
+    method = %method,
+    path = %path,
+    status = status_code,
+    duration_ms = duration.as_millis(),
+    "Request completed"
+);
+```
+
+### Error Logging
+
+```rust
+// In error.rs
+impl IntoResponse for AppError {
+    fn into_response(self) -> Response {
+        let (status, message): (StatusCode, String) = match self {
+            AppError::Database(msg) => {
+                tracing::error!(
+                    error = %msg,
+                    "Database error occurred"
+                );
+                (StatusCode::INTERNAL_SERVER_ERROR, "Internal server error".to_string())
+            }
+            AppError::Unauthorized => {
+                tracing::warn!(
+                    ip = %ip,
+                    "Unauthorized access attempt"
+                );
+                (StatusCode::UNAUTHORIZED, "Unauthorized".to_string())
+            }
+            // ... other variants
+        };
+        // ... response construction
+    }
+}
+```
+
+### Using Spans
+
+```rust
+use tracing::{span, Level};
+
+// Create a span for an operation
+let span = span!(Level::INFO, "process_product", product_id = %product_id);
+let _enter = span.enter();
+
+// Logs within this span will include the product_id context
+tracing::info!("Starting product processing");
+// ... processing logic
+tracing::info!("Product processing completed");
+```
+
+### Instrumented Functions
+
+```rust
+use tracing::instrument;
+
+#[instrument(skip(db))]
+async fn get_product(
+    db: &PgPool,
+    product_id: String,
+) -> Result<Product, AppError> {
+    tracing::debug!("Fetching product from database");
+    
+    let product = sqlx::query_as::<_, Product>("SELECT * FROM products WHERE id = $1")
+        .bind(&product_id)
+        .fetch_one(db)
+        .await
+        .map_err(|e| {
+            tracing::error!(
+                error = %e,
+                product_id = %product_id,
+                "Database query failed"
+            );
+            AppError::Database(e.to_string())
+        })?;
+    
+    tracing::info!(product_id = %product.id, "Product retrieved successfully");
+    Ok(product)
+}
+```
+
+---
+
+## Log Aggregation
+
+### Current Setup
+
+The backend uses `tracing` which produces structured logs that can be:
+
+1. **Output to stdout/stderr**: Captured by container orchestration (Docker, Kubernetes)
+2. **Written to files**: Using file appenders for persistent storage
+3. **Sent to log aggregators**: Compatible with ELK, Splunk, Datadog, etc.
+
+### Recommended Aggregation Tools
+
+- **ELK Stack** (Elasticsearch, Logstash, Kibana): Open-source log aggregation
+- **Grafana Loki**: Lightweight log aggregation system
+- **Datadog**: Cloud-based monitoring and logging
+- **Splunk**: Enterprise log management
+
+### Log Rotation
+
+Configure log rotation to prevent disk exhaustion:
+
+```toml
+# Example: log4rs configuration
+[appenders.file]
+kind = "file"
+path = "logs/chainlogistics.log"
+append = true
+encoder = "pattern"
+
+[appenders.file.encoder]
+pattern = "{d(%Y-%m-%d %H:%M:%S)} {l} {M} - {m}{n}"
+```
+
+### Monitoring and Alerting
+
+Set up alerts for:
+
+- **Error rate spikes**: Sudden increase in error logs
+- **Critical errors**: Any error-level logs in production
+- **Warning patterns**: Repeated warnings that may indicate issues
+- **Log volume**: Unusual log volume increases
+
+---
+
+## Module-Specific Guidelines
+
+### API Layer
+
+- Log all incoming requests at `info` level
+- Log request duration for performance monitoring
+- Include request ID for traceability
+
+```rust
+tracing::info!(
+    method = %method,
+    path = %path,
+    status = status,
+    duration_ms = duration.as_millis(),
+    "Request completed"
+);
+```
+
+### Database Layer
+
+- Log all queries at `debug` level in development
+- Log query failures at `error` level
+- Include query details for debugging
+
+```rust
+tracing::debug!(
+    query = %query,
+    rows_affected = rows,
+    "Query executed successfully"
+);
+```
+
+### Authentication/Authorization
+
+- Log all authentication attempts at `info` level
+- Log failed authentication at `warn` level
+- Include user ID and IP address
+
+```rust
+tracing::warn!(
+    user_id = %user_id,
+    ip = %ip,
+    "Failed authentication attempt"
+);
+```
+
+### Blockchain Integration
+
+- Log all contract interactions at `info` level
+- Log transaction failures at `error` level
+- Include transaction hash for traceability
+
+```rust
+tracing::info!(
+    tx_hash = %tx_hash,
+    contract = %contract_address,
+    "Transaction submitted"
+);
+```
+
+---
+
+## Related Documentation
+
+- [Error Handling Standards](./ERROR_HANDLING_STANDARDS.md)
+- [API Documentation](./API.md)
+- [Architecture Documentation](./ARCHITECTURE.md)
diff --git a/docs/MULTI_CHAIN_INTEGRATION.md b/docs/MULTI_CHAIN_INTEGRATION.md
new file mode 100644
index 00000000..31234d18
--- /dev/null
+++ b/docs/MULTI_CHAIN_INTEGRATION.md
@@ -0,0 +1,210 @@
+# Multi-Chain Integration Guide
+
+## Overview
+
+ChainLogistics now supports multiple blockchain networks, enabling enterprise customers to use their preferred blockchain ecosystem. This eliminates vendor lock-in and enables integration with existing enterprise blockchain infrastructure.
+
+## Supported Networks
+
+### EVM-Compatible Chains
+- **Ethereum**: Largest DeFi and NFT ecosystem
+- **Polygon**: Major scaling solution for enterprises
+- **Quorum**: JP Morgan's enterprise blockchain
+
+### Non-EVM Chains
+- **Stellar**: Original network with Soroban smart contracts
+- **Hyperledger Fabric**: 70% of enterprise blockchain deployments
+- **Corda**: Financial industry standard
+
+## Architecture
+
+### Frontend Multi-Chain Support
+
+The frontend uses a provider factory pattern to abstract blockchain interactions:
+
+```typescript
+import { blockchainFactory } from '@/lib/blockchain/factory';
+import { BlockchainNetwork } from '@/lib/blockchain/types';
+
+// Get provider for specific network
+const provider = blockchainFactory.getProvider('ethereum');
+
+// Connect wallet
+const connection = await provider.connect();
+
+// Send transaction
+const txHash = await provider.sendTransaction({
+  from: connection.address,
+  to: '0x...',
+  value: '1000000000000000000', // 1 ETH in wei
+});
+```
+
+### Backend Multi-Chain Support
+
+The backend provides a trait-based provider system:
+
+```rust
+use crate::blockchain::{BlockchainProvider, BlockchainNetwork};
+
+// Get provider for network
+let provider = match network {
+    BlockchainNetwork::Stellar => Box::new(StellarProvider::new(rpc_url)),
+    BlockchainNetwork::Ethereum => Box::new(EVMProvider::new(BlockchainNetwork::Ethereum, rpc_url)),
+    // ...
+};
+
+// Call contract
+let result = provider.call_contract(&call).await?;
+```
+
+## Configuration
+
+### Environment Variables
+
+```bash
+# Stellar
+STELLAR_RPC_URL=https://soroban-testnet.stellar.org
+STELLAR_CONTRACT_ID=CBUWSKT2UGOAXK4ZREVDJV5XHSYB42PZ3CERU2ZFUTUMAZLJEHNZIECA
+
+# Ethereum
+ETH_RPC_URL=https://eth-mainnet.g.alchemy.com/v2/YOUR_KEY
+ETH_CONTRACT_ID=0x...
+
+# Polygon
+POLYGON_RPC_URL=https://polygon-rpc.com
+POLYGON_CONTRACT_ID=0x...
+
+# Hyperledger
+HYPERLEDGER_RPC_URL=http://localhost:7051
+HYPERLEDGER_CONTRACT_ID=...
+
+# Corda
+CORDA_RPC_URL=http://localhost:10003
+CORDA_CONTRACT_ID=...
+
+# Quorum
+QUORUM_RPC_URL=http://localhost:8545
+QUORUM_CONTRACT_ID=0x...
+```
+
+## Frontend Components
+
+### BlockchainSelector
+
+Allows users to select their preferred blockchain network:
+
+```tsx
+import { BlockchainSelector } from '@/components/blockchain/BlockchainSelector';
+
+<BlockchainSelector 
+  onNetworkChange={(network) => console.log(network)}
+  selectedNetwork="ethereum"
+/>
+```
+
+### WalletConnector
+
+Handles wallet connection for the selected network:
+
+```tsx
+import { WalletConnector } from '@/components/blockchain/WalletConnector';
+
+<WalletConnector 
+  network="ethereum"
+  onConnect={(connection) => console.log(connection)}
+  onDisconnect={() => console.log('disconnected')}
+/>
+```
+
+## API Endpoints
+
+### Get Blockchain Config
+
+```bash
+GET /api/v1/blockchain/config/:network
+```
+
+### Get Supported Networks
+
+```bash
+GET /api/v1/blockchain/networks
+```
+
+### Get Network Balance
+
+```bash
+GET /api/v1/blockchain/:network/balance/:address
+```
+
+## Migration Path
+
+### For Existing Stellar Users
+
+1. No changes required - Stellar remains fully supported
+2. Optionally add additional networks for specific use cases
+3. Use BlockchainSelector to switch between networks
+
+### For New Customers
+
+1. Choose preferred blockchain network during onboarding
+2. Connect wallet for selected network
+3. All operations use selected network
+
+## Cross-Chain Considerations
+
+### Data Consistency
+
+- Each blockchain maintains independent state
+- Sync service periodically reconciles data across chains
+- Audit trail tracks all cross-chain operations
+
+### Transaction Finality
+
+Different networks have different confirmation requirements:
+
+```rust
+// Confirmation blocks by network
+Stellar: 1 block
+Ethereum: 12 blocks
+Polygon: 128 blocks
+Hyperledger: 1 block
+Corda: 1 block
+Quorum: 1 block
+```
+
+### Gas/Fee Estimation
+
+Each provider implements gas estimation for its network:
+
+```typescript
+const estimatedGas = await provider.estimateGas({
+  from: address,
+  to: contractAddress,
+  value: '0',
+  data: encodedFunctionCall,
+});
+```
+
+## Troubleshooting
+
+### Wallet Connection Issues
+
+1. Ensure wallet extension is installed
+2. Verify network is added to wallet
+3. Check RPC URL configuration
+4. Verify contract address for network
+
+### Transaction Failures
+
+1. Check account balance
+2. Verify gas/fee estimation
+3. Check contract address validity
+4. Review transaction data encoding
+
+### Network Switching
+
+1. Disconnect current wallet
+2. Select new network
+3. Reconnect wallet
+4. Verify network in wallet matches selection
diff --git a/docs/REALTIME_EVENTS.md b/docs/REALTIME_EVENTS.md
new file mode 100644
index 00000000..9affc701
--- /dev/null
+++ b/docs/REALTIME_EVENTS.md
@@ -0,0 +1,357 @@
+# Real-time Event Streaming Guide
+
+## Overview
+
+ChainLogistics now supports real-time event streaming via WebSocket, replacing the previous polling-based approach. This provides instant notifications, reduces server load, and improves user experience.
+
+## Architecture
+
+### WebSocket Server
+
+The backend runs a WebSocket server that:
+- Manages concurrent connections
+- Handles pub/sub messaging
+- Broadcasts events to subscribers
+- Automatically reconnects on failure
+
+### Connection Manager
+
+Manages all active WebSocket connections:
+- Tracks subscribed channels per connection
+- Routes messages to appropriate subscribers
+- Cleans up disconnected connections
+- Handles subscription/unsubscription
+
+### Message Types
+
+```typescript
+type MessageType = 
+  | { type: 'subscribe', channel: string }
+  | { type: 'unsubscribe', channel: string }
+  | { type: 'event', channel: string, data: any }
+  | { type: 'ping' }
+  | { type: 'pong' }
+  | { type: 'error', message: string };
+```
+
+## Frontend Usage
+
+### WebSocket Client
+
+```typescript
+import { WebSocketClient } from '@/lib/websocket/client';
+
+const client = new WebSocketClient('ws://localhost:3001/ws');
+
+// Connect
+await client.connect();
+
+// Subscribe to events
+client.subscribe('product:123', (event) => {
+  console.log('New event:', event);
+});
+
+// Unsubscribe
+client.unsubscribe('product:123');
+
+// Disconnect
+client.disconnect();
+```
+
+### React Hook
+
+```tsx
+import { useEffect, useState } from 'react';
+import { WebSocketClient } from '@/lib/websocket/client';
+
+export function useRealtimeEvents(channel: string) {
+  const [events, setEvents] = useState([]);
+  const [connected, setConnected] = useState(false);
+
+  useEffect(() => {
+    const client = new WebSocketClient('ws://localhost:3001/ws');
+
+    client.connect().then(() => {
+      setConnected(true);
+      client.subscribe(channel, (event) => {
+        setEvents(prev => [event, ...prev]);
+      });
+    });
+
+    return () => client.disconnect();
+  }, [channel]);
+
+  return { events, connected };
+}
+```
+
+### RealtimeEventListener Component
+
+```tsx
+import { RealtimeEventListener } from '@/components/tracking/RealtimeEventListener';
+
+// Listen to all events
+<RealtimeEventListener />
+
+// Listen to specific product
+<RealtimeEventListener productId="product-123" />
+```
+
+## Channel Naming
+
+### Product Events
+
+```
+product:{productId}
+```
+
+Subscribe to all events for a specific product:
+```typescript
+client.subscribe('product:abc123', (event) => {
+  console.log('Product event:', event);
+});
+```
+
+### Event Type Channels
+
+```
+events:{eventType}
+```
+
+Subscribe to specific event types:
+```typescript
+client.subscribe('events:shipment', (event) => {
+  console.log('Shipment event:', event);
+});
+```
+
+### Global Events
+
+```
+events:all
+```
+
+Subscribe to all events:
+```typescript
+client.subscribe('events:all', (event) => {
+  console.log('Any event:', event);
+});
+```
+
+## Event Format
+
+```json
+{
+  "id": "event-uuid",
+  "product_id": "product-uuid",
+  "event_type": "shipment",
+  "location": "New York, USA",
+  "timestamp": 1704067200000,
+  "data": {
+    "carrier": "FedEx",
+    "tracking_number": "123456789",
+    "status": "in_transit"
+  }
+}
+```
+
+## Backend Implementation
+
+### Broadcasting Events
+
+```rust
+use crate::websocket::ConnectionManager;
+
+let manager = ConnectionManager::new();
+
+// Broadcast to channel
+manager.broadcast(
+    "product:abc123",
+    serde_json::to_string(&event).unwrap()
+).await;
+```
+
+### Handling Connections
+
+```rust
+use crate::websocket::WebSocketHandler;
+
+let handler = WebSocketHandler::new(manager);
+
+// In route handler
+warp::ws()
+    .and_then(|ws: warp::ws::Ws| async move {
+        Ok::<_, warp::Rejection>(ws.on_upgrade(|socket| {
+            handler.handle_connection(socket)
+        }))
+    })
+```
+
+## Performance Characteristics
+
+### Latency
+
+- **WebSocket**: < 100ms (typical)
+- **Polling (5min interval)**: 0-300s (average 150s)
+- **Improvement**: 1500x faster
+
+### Server Load
+
+- **WebSocket**: Persistent connection, minimal overhead
+- **Polling**: 288 requests/day per client
+- **Improvement**: 99.7% fewer requests
+
+### Bandwidth
+
+- **WebSocket**: ~2KB per event
+- **Polling**: ~5KB per request (even if no events)
+- **Improvement**: 50-70% reduction
+
+## Configuration
+
+### Environment Variables
+
+```bash
+# WebSocket server
+WS_HOST=0.0.0.0
+WS_PORT=3001
+WS_PATH=/ws
+
+# Connection settings
+WS_MAX_CONNECTIONS=10000
+WS_MESSAGE_BUFFER_SIZE=1000
+WS_PING_INTERVAL=30s
+WS_PONG_TIMEOUT=10s
+```
+
+### Client Configuration
+
+```typescript
+const client = new WebSocketClient(
+  process.env.NEXT_PUBLIC_WS_URL || 'ws://localhost:3001/ws'
+);
+
+// Auto-reconnect settings
+client.maxReconnectAttempts = 5;
+client.reconnectDelay = 3000; // 3 seconds
+```
+
+## Error Handling
+
+### Connection Errors
+
+```typescript
+try {
+  await client.connect();
+} catch (error) {
+  console.error('Failed to connect:', error);
+  // Fallback to polling
+}
+```
+
+### Message Errors
+
+```typescript
+client.subscribe('product:123', (event) => {
+  try {
+    processEvent(event);
+  } catch (error) {
+    console.error('Error processing event:', error);
+  }
+});
+```
+
+### Automatic Reconnection
+
+```typescript
+// Client automatically reconnects on disconnect
+// with exponential backoff (3s, 6s, 12s, 24s, 48s)
+```
+
+## Monitoring
+
+### Connection Metrics
+
+```typescript
+// Check connection status
+if (client.isConnected()) {
+  console.log('Connected');
+}
+
+// Get channel subscribers
+const subscribers = await manager.get_channel_subscribers('product:123');
+console.log(`${subscribers} subscribers`);
+```
+
+### Event Metrics
+
+- Events per second
+- Average event size
+- Channel subscriber count
+- Connection duration
+- Reconnection rate
+
+## Troubleshooting
+
+### Connection Issues
+
+1. Check WebSocket server is running
+2. Verify firewall allows WebSocket connections
+3. Check browser console for errors
+4. Verify WS_URL environment variable
+
+### Missing Events
+
+1. Verify subscription to correct channel
+2. Check event is being broadcast
+3. Review connection logs
+4. Check message buffer size
+
+### High Latency
+
+1. Check network connectivity
+2. Monitor server CPU/memory
+3. Check message queue depth
+4. Review event processing time
+
+## Migration from Polling
+
+### Before (Polling)
+
+```typescript
+useEffect(() => {
+  const interval = setInterval(async () => {
+    const events = await fetch('/api/v1/events');
+    setEvents(await events.json());
+  }, 5000); // Poll every 5 seconds
+
+  return () => clearInterval(interval);
+}, []);
+```
+
+### After (WebSocket)
+
+```typescript
+useEffect(() => {
+  const client = new WebSocketClient('ws://localhost:3001/ws');
+  
+  client.connect().then(() => {
+    client.subscribe('events:all', (event) => {
+      setEvents(prev => [event, ...prev]);
+    });
+  });
+
+  return () => client.disconnect();
+}, []);
+```
+
+## Best Practices
+
+1. **Subscribe Selectively**: Only subscribe to needed channels
+2. **Handle Disconnections**: Implement fallback to polling
+3. **Limit Event History**: Keep only recent events in memory
+4. **Monitor Connections**: Track connection health
+5. **Test Reconnection**: Verify auto-reconnect works
+6. **Rate Limiting**: Implement client-side rate limiting
+7. **Error Handling**: Gracefully handle all error cases
+8. **Resource Cleanup**: Always disconnect when done
diff --git a/docs/SECURITY_IMPLEMENTATION.md b/docs/SECURITY_IMPLEMENTATION.md
new file mode 100644
index 00000000..4674c6ed
--- /dev/null
+++ b/docs/SECURITY_IMPLEMENTATION.md
@@ -0,0 +1,115 @@
+# Security Implementation Guide
+
+## Overview
+
+Comprehensive security implementation for ChainLogistics including HTTPS enforcement, SSL/TLS configuration, and CORS policies.
+
+## Smart Contract Controls
+
+Recent Soroban hardening adds contract-level controls for the supply-chain workflows that depend on external data and privileged governance actions:
+
+- Oracle security:
+  feed configs define allowed value ranges, freshness windows, minimum source counts, and consensus deviation thresholds.
+- Oracle redundancy:
+  every feed supports multiple registered reporters, median-based aggregation, fallback snapshots, and a circuit-breaker flag when consensus collapses.
+- Oracle incentives:
+  accepted reporters accrue reward points while outlier reports increment slash counters and reduce staked participation weight.
+- Timelock governance:
+  critical actions now flow through a signer-threshold timelock with proposal, approval, cancel, queue, and execute states.
+- Trusted execution:
+  the timelock can execute delayed pause/unpause, upgrade, multisig, and oracle-config actions through contract-authenticated subcalls.
+- Gas handling:
+  batch transfers expose gas policy and estimation APIs plus resumable chunk processing so callers can split heavy operations before they fail on ledger limits.
+- Test hardening:
+  smart-contract tests now cover oracle fallback paths, timelock execution windows, upgrade gating, and gas-planning invariants.
+
+## HTTPS Enforcement
+
+### Configuration
+
+```bash
+ENFORCE_HTTPS=true
+HSTS_MAX_AGE=31536000
+TLS_ENABLED=true
+TLS_CERT_PATH=/path/to/cert.pem
+TLS_KEY_PATH=/path/to/key.pem
+```
+
+### Implementation
+
+- HTTPS redirect middleware (301 Moved Permanently)
+- HSTS headers with preload directive
+- Support for load balancer SSL termination
+- X-Forwarded-Proto header detection
+
+## SSL/TLS Configuration
+
+### Protocols
+
+- TLS 1.3 (preferred)
+- TLS 1.2 (minimum)
+- SSLv3, TLS 1.0, TLS 1.1 (disabled)
+
+### Certificate Management
+
+- Use trusted CA (Let's Encrypt, DigiCert)
+- Automate renewal with certbot
+- Monitor expiry (alert 30 days before)
+- Secure storage (not in version control)
+
+## CORS Configuration
+
+### Setup
+
+```bash
+ALLOWED_ORIGINS=https://app.chainlogistics.com,*.chainlogistics.com
+```
+
+### Features
+
+- Origin whitelist validation
+- Wildcard subdomain support
+- Preflight request handling
+- Credential support
+- 24-hour preflight caching
+
+## Security Headers
+
+All responses include:
+
+- Strict-Transport-Security (HSTS)
+- Content-Security-Policy (CSP)
+- X-Frame-Options: DENY
+- X-Content-Type-Options: nosniff
+- X-XSS-Protection
+- Referrer-Policy
+- Permissions-Policy
+
+## Testing
+
+```bash
+# Test HTTPS redirect
+curl -I http://api.chainlogistics.com
+
+# Test CORS
+curl -H "Origin: https://app.chainlogistics.com" \
+     -X OPTIONS https://api.chainlogistics.com/api/products
+
+# Check security headers
+curl -I https://api.chainlogistics.com
+```
+
+## Compliance
+
+- PCI DSS: TLS 1.2+, strong ciphers
+- GDPR: Data encryption in transit
+- SOC 2: Encryption standards, access logging
+
+## Deployment Checklist
+
+- [ ] Obtain SSL/TLS certificates
+- [ ] Configure environment variables
+- [ ] Test HTTPS enforcement
+- [ ] Verify CORS policies
+- [ ] Run SSL Labs scan (target: A+)
+- [ ] Enable monitoring and alerting
diff --git a/docs/TESTING_STRATEGY.md b/docs/TESTING_STRATEGY.md
new file mode 100644
index 00000000..b5dfceef
--- /dev/null
+++ b/docs/TESTING_STRATEGY.md
@@ -0,0 +1,170 @@
+# Testing Strategy and Quality Assurance
+
+This document defines the end-to-end testing and QA standards for ChainLogistics.
+
+## 1. Testing Approach
+
+We use a test pyramid with clear responsibilities at each level:
+
+- Unit tests: validate isolated functions and modules.
+- Integration tests: validate service boundaries and cross-module behavior.
+- End-to-end tests: validate user workflows and critical paths.
+- Non-functional tests: validate performance, reliability, and security.
+
+### Principles
+
+- Shift left: add tests in the same change that introduces behavior.
+- Risk-based coverage: prioritize product registration, tracking events, auth, and verification.
+- Deterministic tests: avoid flaky tests by controlling data, time, and external dependencies.
+- Fast feedback: lint + unit tests run first, then integration and e2e.
+
+## 2. Testing Levels and Scope
+
+### Unit Testing
+
+- Frontend: Vitest for components, hooks, utilities, and state stores.
+- Backend and smart contracts: Rust unit tests with `cargo test`.
+- SDKs: language-native unit tests for API client behavior and serialization.
+
+Required for:
+
+- New business logic.
+- Bug fixes that can regress.
+- Validation and parsing code.
+
+### Integration Testing
+
+- Backend integration tests cover DB migrations, service layer, and route contracts.
+- Frontend integration tests cover route-level behavior and cross-component flows.
+- SDK integration tests validate API contract compatibility against staging or mocked APIs.
+
+Required scenarios:
+
+- Product CRUD lifecycle.
+- Tracking event lifecycle and query filters.
+- Authentication and authorization paths.
+- Failure paths (timeouts, 4xx/5xx, malformed payloads).
+
+### End-to-End Testing
+
+Playwright E2E tests validate complete workflows:
+
+- Landing and navigation.
+- Wallet connect flow (mocked in CI when needed).
+- Product registration and tracking views.
+- Verification and user-facing status.
+
+Minimum E2E suite should cover:
+
+- Happy path registration.
+- One negative path per critical feature.
+- Cross-browser execution in CI where supported.
+
+### Performance Testing
+
+Performance checks are required for high-risk changes and release candidates.
+
+- Frontend: Core Web Vitals and route load-time checks.
+- Backend: API latency for read/write endpoints under representative load.
+- Smart contracts: gas/cost regression tracking (see `smart-contract/GAS_OPTIMIZATION_REPORT.md` and `docs/gas_usage_benchmarks.md`).
+
+Suggested baseline targets:
+
+- API p95 latency < 300 ms for common reads under expected load.
+- No critical route should regress by > 15% from baseline without approval.
+- Contract cost regressions > 10% require documented justification.
+
+### Security Testing
+
+Security validation is mandatory before release:
+
+- Dependency vulnerability scanning (OSV and ecosystem tools in CI).
+- Static analysis (CodeQL and lint checks).
+- Authn/authz tests for protected endpoints.
+- Input validation and error-handling tests.
+
+Security checklist:
+
+- No secrets in source or test fixtures.
+- No auth bypass paths in integration tests.
+- Validation failures return expected error responses.
+- Dependency scan findings triaged before merge.
+
+## 3. Coverage Requirements
+
+Coverage thresholds are quality gates, not finish lines.
+
+- Frontend (Vitest): 80% global threshold for lines, statements, branches, and functions.
+- Backend/service code: target >= 80% for core modules and critical paths.
+- Smart contracts: target >= 90% on contract logic and authorization rules.
+- SDKs: target >= 80% on API clients, models, and error handling.
+
+Additional requirements:
+
+- Every bug fix adds at least one regression test.
+- Critical modules (auth, payments/financial flows, tracking integrity) require branch coverage on decision logic.
+
+## 4. Test Data Management
+
+Test data rules:
+
+- Keep deterministic fixture data in version-controlled test fixtures.
+- Use generated IDs and timestamps to avoid collisions.
+- Isolate test tenants/accounts where possible.
+- Never use production secrets or PII in tests.
+
+Recommended patterns:
+
+- Unit tests: inline builders/factories.
+- Integration tests: migration-seeded DB with per-test cleanup.
+- E2E tests: stable mock mode where blockchain/network calls are not required.
+
+## 5. Automation Pipeline
+
+Testing automation currently runs in GitHub Actions workflows under `.github/workflows/`.
+
+Default validation order on PRs:
+
+1. Lint and static analysis.
+2. Unit tests.
+3. Integration tests.
+4. E2E tests.
+5. Build verification.
+
+Pipeline requirements for contributions:
+
+- All lint jobs pass.
+- All required tests pass.
+- No critical/high security findings remain untriaged.
+- Build artifacts complete successfully.
+
+## 6. Quality Gates and Release Criteria
+
+A change is release-ready only if all gates pass:
+
+- Linting and formatting checks pass.
+- Required tests pass for touched areas.
+- Coverage thresholds are met or exception approved.
+- Security checks completed and reviewed.
+- Documentation updated for behavior or interface changes.
+
+Release checklist:
+
+- Changelog/release notes updated.
+- Migration notes added for breaking SDK or API changes.
+- Operational checks completed (monitoring, alerts, rollback plan).
+
+## 7. Integration Test Scenarios (Minimum Set)
+
+- Product registration -> retrieval -> update -> deletion.
+- Event creation -> list by product -> list by type.
+- Unauthorized request handling.
+- Input validation on malformed payloads.
+- SDK-to-API contract compatibility for key endpoints.
+
+## 8. Ownership and Maintenance
+
+- The author of a change owns adding/updating tests in the same PR.
+- Reviewers enforce quality gates and test relevance.
+- Outdated tests should be fixed or removed in the same PR that changes behavior.
+- Flaky tests should be quarantined only with a follow-up issue and owner.
diff --git a/docs/USER_GUIDES.md b/docs/USER_GUIDES.md
new file mode 100644
index 00000000..2a13c720
--- /dev/null
+++ b/docs/USER_GUIDES.md
@@ -0,0 +1,1582 @@
+# ChainLogistics User Documentation
+
+## Overview
+
+ChainLogistics is a decentralized supply chain tracking platform that enables transparent, tamper-proof tracking of products from origin to consumer. This comprehensive guide covers all user roles and workflows.
+
+## Table of Contents
+
+1. [Getting Started](#getting-started)
+2. [Producer Guide](#producer-guide)
+3. [Supply Chain Partner Guide](#supply-chain-partner-guide)
+4. [Consumer Guide](#consumer-guide)
+5. [Administrator Guide](#administrator-guide)
+6. [Developer Guide](#developer-guide)
+7. [Troubleshooting](#troubleshooting)
+8. [Best Practices](#best-practices)
+9. [FAQ](#faq)
+10. [Video Tutorials](#video-tutorials)
+
+---
+
+## Getting Started
+
+### System Requirements
+
+**For Desktop Users:**
+- Modern web browser (Chrome 90+, Firefox 88+, Safari 14+)
+- Stable internet connection
+- Stellar-compatible wallet (Freighter recommended)
+
+**For Mobile Users:**
+- iOS 13+ or Android 8+
+- Stellar wallet app
+- Camera for QR code scanning
+
+### Account Setup
+
+1. **Install Wallet**
+   - Install [Freighter Wallet](https://freighter.app/) for browser
+   - Create secure password and backup recovery phrase
+   - Fund wallet with testnet XLM for testing
+
+2. **Register Account**
+   - Visit [ChainLogistics Portal](https://portal.chainlogistics.io)
+   - Connect your wallet
+   - Complete profile information
+   - Verify email address
+
+3. **Choose Your Role**
+   - Select your primary role (Producer, Partner, Consumer, Admin)
+   - Complete role-specific onboarding
+   - Review and accept terms of service
+
+---
+
+## Producer Guide
+
+### Overview
+
+Producers are the starting point of the supply chain. You register products at their origin, establishing the foundation of transparency and traceability.
+
+### Getting Started as a Producer
+
+#### 1. Account Setup
+- Verify your producer status
+- Upload business registration documents
+- Set up production facility information
+- Configure certification details
+
+#### 2. Product Registration
+
+**Single Product Registration**
+
+1. **Navigate to Product Registration**
+   - Go to Dashboard → Register Product
+   - Choose "Single Product" option
+
+2. **Basic Information**
+   ```
+   Product ID: PROD-2024-001 (auto-generated or custom)
+   Product Name: Ethiopian Single Origin Coffee
+   Description: Premium Arabica beans from Sidamo region
+   Category: Coffee & Tea
+   ```
+
+3. **Origin Details**
+   ```
+   Origin Location: Sidamo, Ethiopia
+   GPS Coordinates: 6.8325°N, 38.5475°E
+   Farm Size: 50 hectares
+   Harvest Date: 2024-03-15
+   ```
+
+4. **Certifications**
+   - USDA Organic (Certificate: USDA-2024-12345)
+   - Fair Trade Certified (Certificate: FT-2024-67890)
+   - Rainforest Alliance (Certificate: RA-2024-54321)
+
+5. **Quality Specifications**
+   ```
+   Variety: Arabica Heirloom
+   Processing Method: Washed
+   Altitude: 1800-2000 meters
+   Moisture Content: 11.5%
+   Cupping Score: 87.5
+   ```
+
+6. **Media Upload**
+   - Farm photos (minimum 3, maximum 10)
+   - Processing facility images
+   - Certificate scans
+   - Quality inspection reports
+
+**Bulk Product Registration**
+
+For large-scale operations:
+
+1. **Prepare CSV Template**
+   ```csv
+   product_id,name,category,origin_location,certifications,quantity
+   PROD-001,Ethiopian Coffee,Coffee,Sidamo Ethiopia,"USDA Organic,Fair Trade",1000
+   PROD-002,Kenyan Tea,Tea,Nandi Kenya,"Organic,Rainforest Alliance",500
+   ```
+
+2. **Upload Template**
+   - Go to Products → Bulk Import
+   - Upload CSV file
+   - Map columns to system fields
+   - Review and validate data
+   - Confirm import
+
+#### 3. QR Code Generation
+
+After product registration:
+
+1. **Generate QR Codes**
+   - Select products from list
+   - Choose QR code format (PNG, SVG, PDF)
+   - Set batch size for printing
+   - Download generated codes
+
+2. **Physical Labeling**
+   - Print QR codes on weather-resistant labels
+   - Apply to product packaging
+   - Test scan functionality
+   - Record label placement photos
+
+### Producer Dashboard
+
+#### Key Features
+
+**Product Overview**
+```
+Total Products: 150
+Active Products: 142
+Pending Verification: 8
+Expiring Soon: 5
+```
+
+**Recent Activity**
+- Product registrations
+- Quality inspections
+- Certification updates
+- Partner requests
+
+**Compliance Status**
+- Certification validity
+- Audit requirements
+- Documentation completeness
+- Regulatory compliance
+
+#### Managing Products
+
+**Product Details Page**
+- Complete product information
+- Supply chain timeline
+- Current location and status
+- Associated documents
+- Quality metrics
+
+**Batch Operations**
+- Update multiple products
+- Change certification status
+- Modify product categories
+- Export product data
+
+### Best Practices for Producers
+
+#### Data Quality
+- Use consistent naming conventions
+- Provide detailed descriptions
+- Keep information up-to-date
+- Verify GPS coordinates
+
+#### Documentation
+- Maintain digital copies of all certificates
+- Upload high-quality photos
+- Document quality processes
+- Keep audit trails complete
+
+#### Security
+- Protect wallet credentials
+- Use secure internet connections
+- Implement access controls
+- Regular security audits
+
+---
+
+## Supply Chain Partner Guide
+
+### Overview
+
+Supply Chain Partners include processors, manufacturers, shippers, distributors, and retailers who handle products as they move through the supply chain.
+
+### Partner Roles and Responsibilities
+
+#### 1. Processors & Manufacturers
+- Transform raw materials into finished products
+- Maintain quality standards
+- Document processing methods
+- Ensure compliance with regulations
+
+#### 2. Shipping & Logistics
+- Transport products between facilities
+- Maintain temperature controls
+- Track location and condition
+- Handle customs documentation
+
+#### 3. Distributors & Wholesalers
+- Store products in warehouses
+- Manage inventory levels
+- Coordinate deliveries
+- Maintain product integrity
+
+#### 4. Retailers
+- Display products for consumers
+- Provide product information
+- Handle customer inquiries
+- Manage point-of-sale data
+
+### Getting Started as a Partner
+
+#### 1. Partner Registration
+
+1. **Company Information**
+   ```
+   Company Name: Global Processing Inc.
+   Business Type: Food Processing
+   License Number: FP-2024-12345
+   Address: 123 Industrial Ave, Processing City, PC 12345
+   ```
+
+2. **Facility Details**
+   - Facility locations
+   - Storage capacities
+   - Equipment specifications
+   - Quality certifications
+
+3. **Compliance Documents**
+   - Business licenses
+   - Food safety certifications
+   - Insurance documents
+   - Quality management systems
+
+#### 2. Authorization Setup
+
+**Request Product Access**
+1. Scan product QR code
+2. Request authorization from producer
+3. Provide required documentation
+4. Wait for approval
+
+**Receive Authorization**
+1. Review authorization scope
+2. Accept terms and conditions
+3. Configure access permissions
+4. Set up notification preferences
+
+### Adding Tracking Events
+
+#### Event Types and Requirements
+
+**Processing Events**
+```
+Event Type: PROCESSING
+Required Fields:
+- Processing Method
+- Equipment Used
+- Temperature Range
+- Duration
+- Quality Checks
+```
+
+**Shipping Events**
+```
+Event Type: SHIPPING
+Required Fields:
+- Origin Address
+- Destination Address
+- Carrier Information
+- Tracking Number
+- Temperature Conditions
+- Estimated Arrival
+```
+
+**Quality Control Events**
+```
+Event Type: QUALITY_CHECK
+Required Fields:
+- Test Results
+- Quality Score
+- Inspector Information
+- Test Methods
+- Pass/Fail Status
+```
+
+**Storage Events**
+```
+Event Type: STORAGE
+Required Fields:
+- Storage Location
+- Temperature
+- Humidity
+- Duration
+- Condition Checks
+```
+
+#### Step-by-Step Event Addition
+
+1. **Scan Product QR Code**
+   - Open mobile app or web interface
+   - Scan product QR code
+   - Verify product details
+   - Confirm authorization
+
+2. **Select Event Type**
+   - Choose appropriate event category
+   - Select specific event type
+   - Review required fields
+   - Prepare supporting documents
+
+3. **Enter Event Details**
+   ```
+   Example: Shipping Event
+   From: Processing Facility, Addis Ababa
+   To: Port of Djibouti
+   Carrier: Ethiopian Shipping Lines
+   Tracking #: ESL20240315001
+   Temperature: 15-20°C
+   Departure: 2024-03-15 08:00 UTC
+   Arrival: 2024-03-16 14:00 UTC
+   ```
+
+4. **Upload Supporting Documents**
+   - Bill of lading
+   - Temperature logs
+   - Photos of packaging
+   - Quality certificates
+
+5. **Verify and Submit**
+   - Review all information
+   - Confirm accuracy
+   - Sign with wallet
+   - Wait for blockchain confirmation
+
+### Partner Dashboard Features
+
+#### Event Management
+- View all tracked events
+- Filter by date, type, location
+- Export event data
+- Generate reports
+
+#### Compliance Monitoring
+- Real-time compliance status
+- Missing documentation alerts
+- Upcoming certification expirations
+- Audit trail completeness
+
+#### Analytics & Insights
+- Processing efficiency metrics
+- Quality trend analysis
+- Transportation performance
+- Inventory turnover rates
+
+### Integration Options
+
+#### API Integration
+For automated systems:
+
+```javascript
+// Example: Add tracking event via API
+const response = await fetch('/api/v1/admin/events', {
+  method: 'POST',
+  headers: {
+    'Content-Type': 'application/json',
+    'X-API-Key': 'your-api-key'
+  },
+  body: JSON.stringify({
+    product_id: 'PROD-12345',
+    event_type: 'SHIPPING',
+    location: 'Port of Djibouti',
+    metadata: {
+      carrier: 'Ethiopian Shipping Lines',
+      tracking_number: 'ESL20240315001',
+      temperature_range: '15-20°C'
+    }
+  })
+});
+```
+
+#### IoT Device Integration
+For automated data collection:
+
+1. **Temperature Sensors**
+   - Real-time temperature monitoring
+   - Automatic alerts for deviations
+   - Historical data storage
+
+2. **GPS Trackers**
+   - Location updates every 5 minutes
+   - Geofence breach alerts
+   - Route optimization
+
+3. **Quality Sensors**
+   - Humidity monitoring
+   - Shock/vibration detection
+   - Gas composition analysis
+
+---
+
+## Consumer Guide
+
+### Overview
+
+Consumers are the end users who verify product authenticity and trace product journeys. ChainLogistics empowers consumers with complete transparency about the products they purchase.
+
+### Product Verification
+
+#### QR Code Scanning
+
+1. **Scan the Product QR Code**
+   - Open smartphone camera
+   - Point at QR code on product
+   - Tap notification to open verification page
+   - Or use ChainLogistics mobile app
+
+2. **View Product Information**
+   ```
+   Product: Ethiopian Single Origin Coffee
+   Producer: Sidamo Farmers Cooperative
+   Origin: Sidamo, Ethiopia (6.8325°N, 38.5475°E)
+   Registration Date: March 15, 2024
+   Certifications: USDA Organic, Fair Trade
+   ```
+
+3. **Follow the Supply Chain Journey**
+   - **Harvest**: March 15, 2024 - Sidamo, Ethiopia
+   - **Processing**: March 20, 2024 - Addis Ababa Facility
+   - **Export**: March 25, 2024 - Port of Djibouti
+   - **Shipping**: March 28, 2024 - Vessel departure
+   - **Import**: April 10, 2024 - Port of New York
+   - **Roasting**: April 12, 2024 - Brooklyn Roastery
+   - **Packaging**: April 13, 2024 - Packaging Facility
+   - **Retail**: April 15, 2024 - Your Local Store
+
+#### Understanding the Timeline
+
+**Event Icons and Meanings**
+- 🌱 **Harvest**: Product was harvested or produced
+- ⚙️ **Processing**: Product was processed or manufactured
+- 📦 **Packaging**: Product was packaged for distribution
+- 🚚 **Shipping**: Product is in transit
+- 📥 **Receiving**: Product arrived at facility
+- ✅ **Quality Check**: Product passed quality inspection
+- 🏪 **Retail**: Product available for purchase
+
+**Verification Indicators**
+- ✅ **Verified**: Event confirmed by authorized party
+- ⚠️ **Warning**: Potential issue detected
+- ❌ **Failed**: Quality check failed or issue found
+
+### Product Details Analysis
+
+#### Quality Information
+```
+Quality Metrics:
+- Cupping Score: 87.5/100 (Excellent)
+- Moisture Content: 11.5% (Optimal)
+- Altitude: 1800-2000m (High Altitude)
+- Processing: Washed Method (Premium)
+
+Certifications Valid:
+✅ USDA Organic - Expires: Dec 31, 2024
+✅ Fair Trade - Expires: Dec 31, 2024
+✅ Rainforest Alliance - Expires: Dec 31, 2024
+```
+
+#### Sustainability Information
+```
+Environmental Impact:
+- Carbon Footprint: 2.3 kg CO2/kg
+- Water Usage: 150 liters/kg
+- Biodiversity Score: 8.5/10
+- Soil Health: Excellent
+
+Social Impact:
+- Fair Trade Premium: $0.20/kg paid to farmers
+- Community Projects: 5 funded this year
+- Worker Conditions: Certified fair labor practices
+```
+
+### Consumer Features
+
+#### Save and Track Products
+- Save products to personal collection
+- Set alerts for product updates
+- Track favorite producers
+- Share product stories
+
+#### Report Issues
+- Report quality concerns
+- Flag suspicious activities
+- Provide feedback
+- Request investigations
+
+#### Educational Content
+- Learn about production methods
+- Understand certification meanings
+- Discover sustainability practices
+- Explore regional variations
+
+### Mobile App Features
+
+#### Home Screen
+- Quick QR code scanner
+- Recent scans
+- Saved products
+- Educational content
+
+#### Product Details
+- Interactive timeline
+- Photo galleries
+- Video content
+- Detailed specifications
+
+#### Community Features
+- Share discoveries
+- Rate products
+- Write reviews
+- Connect with other consumers
+
+---
+
+## Administrator Guide
+
+### Overview
+
+Administrators manage the ChainLogistics platform, ensuring smooth operations, compliance, and security. This guide covers all administrative functions and best practices.
+
+### Admin Dashboard Overview
+
+#### System Overview
+```
+Platform Statistics:
+- Total Products: 12,450
+- Active Users: 3,280
+- Daily Transactions: 1,250
+- System Uptime: 99.97%
+- Blockchain Sync: Current
+```
+
+#### Quick Actions
+- User management
+- Product approvals
+- System monitoring
+- Report generation
+- Configuration management
+
+### User Management
+
+#### User Roles and Permissions
+
+**Super Administrator**
+- Full system access
+- User role management
+- System configuration
+- Security settings
+
+**Platform Administrator**
+- User management
+- Content moderation
+- Report generation
+- Support ticket management
+
+**Compliance Officer**
+- Audit management
+- Compliance monitoring
+- Report generation
+- Investigation handling
+
+**Support Agent**
+- User assistance
+- Issue resolution
+- Documentation updates
+- Training materials
+
+#### User Management Operations
+
+**Creating New Users**
+1. Navigate to Users → Add User
+2. Fill in user information:
+   ```
+   Name: John Doe
+   Email: john.doe@company.com
+   Role: Platform Administrator
+   Department: Operations
+   Phone: +1-555-0123
+   ```
+3. Set initial permissions
+4. Send invitation email
+5. Follow up on account setup
+
+**Managing User Permissions**
+1. Select user from list
+2. Review current permissions
+3. Modify as needed:
+   - Grant additional access
+   - Restrict specific features
+   - Set time-based permissions
+   - Configure IP restrictions
+
+**User Activity Monitoring**
+```
+Recent Activity:
+- john.doe@company.com - Product approval - 2 hours ago
+- jane.smith@company.com - User creation - 4 hours ago
+- mike.wilson@company.com - System backup - 6 hours ago
+- sarah.jones@company.com - Report generation - 8 hours ago
+```
+
+### Product Management
+
+#### Product Approval Workflow
+
+**Pending Approvals**
+1. Review product submission
+2. Verify documentation
+3. Check compliance
+4. Approve or request changes
+5. Notify submitter
+
+**Quality Assurance**
+- Verify product information accuracy
+- Check certification validity
+- Review supporting documents
+- Ensure regulatory compliance
+
+**Batch Operations**
+- Bulk product approvals
+- Category assignments
+- Certification updates
+- Status changes
+
+### Compliance and Auditing
+
+#### Compliance Monitoring
+
+**Real-time Compliance Dashboard**
+```
+Compliance Status:
+- Fully Compliant: 89.2%
+- Minor Issues: 8.5%
+- Major Issues: 2.1%
+- Under Investigation: 0.2%
+```
+
+**Alert Management**
+- Certification expiry warnings
+- Documentation missing alerts
+- Quality check failures
+- Regulatory compliance issues
+
+#### Audit Management
+
+**Audit Types**
+- Product audits
+- Process audits
+- System audits
+- Compliance audits
+
+**Audit Workflow**
+1. Schedule audit
+2. Define scope and criteria
+3. Conduct audit
+4. Document findings
+5. Implement corrective actions
+6. Follow-up verification
+
+### System Configuration
+
+#### Platform Settings
+
+**General Configuration**
+```
+Platform Settings:
+- Default Language: English
+- Timezone: UTC
+- Currency: USD
+- Date Format: YYYY-MM-DD
+- Number Format: 1,234.56
+```
+
+**Security Settings**
+- Password complexity requirements
+- Session timeout duration
+- Two-factor authentication
+- IP whitelist configuration
+- API rate limiting
+
+**Notification Settings**
+- Email notification preferences
+- SMS alert configurations
+- Push notification settings
+- Webhook endpoint management
+
+#### Integration Configuration
+
+**Blockchain Settings**
+- Network configuration (Testnet/Mainnet)
+- Contract address management
+- Gas price settings
+- Transaction confirmation requirements
+
+**Third-Party Integrations**
+- Payment processor settings
+- Shipping carrier APIs
+- Certification authority connections
+- Weather service integrations
+
+### Reporting and Analytics
+
+#### Standard Reports
+
+**User Reports**
+- User registration trends
+- Active user statistics
+- Role distribution
+- Geographic distribution
+
+**Product Reports**
+- Product registration trends
+- Category distribution
+- Geographic origins
+- Certification statistics
+
+**Transaction Reports**
+- Daily transaction volumes
+- Processing times
+- Error rates
+- System performance
+
+#### Custom Reports
+
+1. **Report Builder**
+   - Select data sources
+   - Define filters
+   - Choose visualization types
+   - Schedule delivery
+
+2. **Export Options**
+   - PDF reports
+   - Excel spreadsheets
+   - CSV data files
+   - API data access
+
+### System Monitoring
+
+#### Health Monitoring
+
+**System Health Dashboard**
+```
+System Status:
+- API Server: Healthy
+- Database: Healthy
+- Cache: Healthy
+- Blockchain: Healthy
+- External Services: Healthy
+```
+
+**Performance Metrics**
+- Response times
+- Throughput rates
+- Error rates
+- Resource utilization
+
+#### Alert Management
+
+**Alert Configuration**
+- Threshold settings
+- Notification channels
+- Escalation rules
+- Maintenance schedules
+
+**Incident Response**
+1. Alert detection
+2. Impact assessment
+3. Response team notification
+4. Issue resolution
+5. Post-incident review
+
+### Backup and Recovery
+
+#### Data Backup Strategy
+
+**Automated Backups**
+- Database backups (daily)
+- File system backups (hourly)
+- Configuration backups (weekly)
+- Blockchain state backups
+
+**Recovery Procedures**
+1. Identify recovery point
+2. Prepare recovery environment
+3. Restore data backups
+4. Verify system integrity
+5. Resume operations
+
+### Security Management
+
+#### Security Best Practices
+
+**Access Control**
+- Principle of least privilege
+- Regular access reviews
+- Temporary access grants
+- Access logging and monitoring
+
+**Data Protection**
+- Encryption at rest and in transit
+- Data classification
+- Retention policies
+- Secure data disposal
+
+#### Security Incident Response
+
+**Incident Types**
+- Unauthorized access attempts
+- Data breaches
+- System compromises
+- Policy violations
+
+**Response Process**
+1. Detection and analysis
+2. Containment and eradication
+3. Recovery and restoration
+4. Post-incident analysis
+
+---
+
+## Developer Guide
+
+### Overview
+
+Developers can integrate ChainLogistics into their applications using our comprehensive API, SDKs, and webhooks. This guide covers all technical aspects of integration.
+
+### Getting Started
+
+#### API Access
+
+1. **Register for API Key**
+   - Visit [Developer Portal](https://developers.chainlogistics.io)
+   - Create developer account
+   - Generate API key
+   - Review rate limits and quotas
+
+2. **Choose Integration Method**
+   - REST API (most common)
+   - GraphQL (beta)
+   - SDK libraries (recommended)
+   - Webhooks (real-time updates)
+
+#### Authentication
+
+```javascript
+// API Key Authentication
+const headers = {
+  'X-API-Key': 'your-api-key-here',
+  'Content-Type': 'application/json'
+};
+
+// JWT Authentication (for admin operations)
+const token = await getJWTToken(username, password);
+const headers = {
+  'Authorization': `Bearer ${token}`,
+  'Content-Type': 'application/json'
+};
+```
+
+### API Integration
+
+#### Core Endpoints
+
+**Product Management**
+```javascript
+// List products
+const products = await fetch('/api/v1/products', {
+  headers: headers
+}).then(res => res.json());
+
+// Create product
+const product = await fetch('/api/v1/admin/products', {
+  method: 'POST',
+  headers: headers,
+  body: JSON.stringify({
+    id: 'PROD-12345',
+    name: 'Ethiopian Coffee',
+    category: 'coffee',
+    origin_location: 'Sidamo, Ethiopia'
+  })
+}).then(res => res.json());
+```
+
+**Event Management**
+```javascript
+// Add tracking event
+const event = await fetch('/api/v1/admin/events', {
+  method: 'POST',
+  headers: headers,
+  body: JSON.stringify({
+    product_id: 'PROD-12345',
+    event_type: 'SHIPPING',
+    location: 'Port of Djibouti',
+    metadata: {
+      carrier: 'Ethiopian Shipping Lines',
+      tracking_number: 'ESL20240315001'
+    }
+  })
+}).then(res => res.json());
+```
+
+#### Error Handling
+
+```javascript
+try {
+  const response = await fetch('/api/v1/products/PROD-12345', {
+    headers: headers
+  });
+  
+  if (!response.ok) {
+    const error = await response.json();
+    throw new Error(error.message);
+  }
+  
+  const product = await response.json();
+  return product;
+} catch (error) {
+  console.error('API Error:', error);
+  // Handle error appropriately
+}
+```
+
+### SDK Integration
+
+#### JavaScript/TypeScript SDK
+
+```bash
+npm install @chainlogistics/sdk
+```
+
+```javascript
+import { ChainLogisticsAPI } from '@chainlogistics/sdk';
+
+const client = new ChainLogisticsAPI({
+  apiKey: 'your-api-key',
+  baseURL: 'https://api.chainlogistics.io'
+});
+
+// List products
+const products = await client.products.list({
+  category: 'coffee',
+  limit: 10
+});
+
+// Create product
+const product = await client.products.create({
+  id: 'PROD-12345',
+  name: 'Ethiopian Coffee',
+  category: 'coffee'
+});
+
+// Add event
+await client.events.create({
+  product_id: 'PROD-12345',
+  event_type: 'SHIPPING',
+  location: 'Port of Djibouti'
+});
+```
+
+#### Python SDK
+
+```bash
+pip install chainlogistics-sdk
+```
+
+```python
+from chainlogistics import ChainLogisticsAPI
+
+client = ChainLogisticsAPI(
+    api_key='your-api-key',
+    base_url='https://api.chainlogistics.io'
+)
+
+# List products
+products = client.products.list(
+    category='coffee',
+    limit=10
+)
+
+# Create product
+product = client.products.create(
+    id='PROD-12345',
+    name='Ethiopian Coffee',
+    category='coffee'
+)
+
+# Add event
+client.events.create(
+    product_id='PROD-12345',
+    event_type='SHIPPING',
+    location='Port of Djibouti'
+)
+```
+
+#### Rust SDK
+
+```toml
+[dependencies]
+chainlogistics-sdk = "1.0"
+tokio = { version = "1.0", features = ["full"] }
+```
+
+```rust
+use chainlogistics_sdk::{ChainLogisticsAPI, Config};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let config = Config::new()
+        .api_key("your-api-key")
+        .base_url("https://api.chainlogistics.io");
+    
+    let client = ChainLogisticsAPI::new(config);
+    
+    // List products
+    let products = client.products()
+        .category("coffee")
+        .limit(10)
+        .list()
+        .await?;
+    
+    // Create product
+    let product = client.products()
+        .create(CreateProductRequest {
+            id: "PROD-12345".to_string(),
+            name: "Ethiopian Coffee".to_string(),
+            category: "coffee".to_string(),
+            ..Default::default()
+        })
+        .await?;
+    
+    Ok(())
+}
+```
+
+### Webhook Integration
+
+#### Setting Up Webhooks
+
+1. **Configure Webhook Endpoint**
+   ```javascript
+   // Express.js webhook endpoint
+   app.post('/webhook', express.raw({type: 'application/json'}), (req, res) => {
+     const signature = req.headers['x-chainlogistics-signature'];
+     const payload = req.body;
+     
+     // Verify signature
+     const isValid = verifyWebhookSignature(payload, signature, webhook_secret);
+     
+     if (isValid) {
+       const event = JSON.parse(payload);
+       handleWebhookEvent(event);
+       res.sendStatus(200);
+     } else {
+       res.sendStatus(403);
+     }
+   });
+   ```
+
+2. **Handle Webhook Events**
+   ```javascript
+   function handleWebhookEvent(event) {
+     switch (event.type) {
+       case 'product.created':
+         console.log('New product created:', event.data.product_id);
+         break;
+       case 'event.created':
+         console.log('New tracking event:', event.data.id);
+         break;
+       case 'compliance.checked':
+         console.log('Compliance check completed:', event.data.product_id);
+         break;
+     }
+   }
+   ```
+
+#### Webhook Event Types
+
+- `product.created`: New product registration
+- `product.updated`: Product information updated
+- `event.created`: New tracking event added
+- `event.updated`: Event information modified
+- `compliance.checked`: Compliance check completed
+- `user.registered`: New user registration
+- `transaction.completed`: Financial transaction processed
+
+### Blockchain Integration
+
+#### Smart Contract Interaction
+
+```javascript
+import { Contract, SorobanRpc } from '@stellar/stellar-sdk';
+
+const contractId = 'CBUWSKT2UGOAXK4ZREVDJV5XHSYB42PZ3CERU2ZFUTUMAZLJEHNZIECA';
+const rpcUrl = 'https://soroban-testnet.stellar.org';
+
+const contract = new Contract({
+  contractId,
+  networkPassphrase: 'Test SDF Network ; September 2015',
+  rpcUrl
+});
+
+// Get product from blockchain
+const product = await contract.get_product({
+  id: 'PROD-12345'
+});
+
+// Add tracking event
+const result = await contract.add_tracking_event({
+  product_id: 'PROD-12345',
+  location: 'Port of Djibouti',
+  event_type: 'SHIPPING',
+  metadata: JSON.stringify({
+    carrier: 'Ethiopian Shipping Lines',
+    tracking_number: 'ESL20240315001'
+  })
+});
+```
+
+### Testing and Development
+
+#### Sandbox Environment
+
+Use the sandbox environment for development and testing:
+
+- **URL**: `https://sandbox-api.chainlogistics.io`
+- **Features**: Full API functionality
+- **Data**: Test data only
+- **Rate Limits**: Generous limits for testing
+
+#### Testing Best Practices
+
+1. **Use Test Data**
+   - Create test products with `TEST-` prefix
+   - Use test user accounts
+   - Avoid production data in tests
+
+2. **Mock External Dependencies**
+   - Mock blockchain calls
+   - Mock payment processing
+   - Mock external APIs
+
+3. **Test Error Scenarios**
+   - Network failures
+   - Invalid data
+   - Rate limiting
+   - Authentication errors
+
+### Rate Limiting and Performance
+
+#### Understanding Rate Limits
+
+| Tier | Requests/Minute | Burst | Daily Limit |
+|------|-----------------|-------|-------------|
+| Basic | 100 | 200 | 10,000 |
+| Standard | 1000 | 2000 | 100,000 |
+| Enterprise | 10000 | 20000 | 1,000,000 |
+
+#### Best Practices
+
+1. **Implement Exponential Backoff**
+   ```javascript
+   async function makeRequest(url, options, retries = 3) {
+     try {
+       const response = await fetch(url, options);
+       return response.json();
+     } catch (error) {
+       if (retries > 0) {
+         await new Promise(resolve => setTimeout(resolve, 1000 * (4 - retries)));
+         return makeRequest(url, options, retries - 1);
+       }
+       throw error;
+     }
+   }
+   ```
+
+2. **Cache Responses**
+   ```javascript
+   const cache = new Map();
+   
+   async function getCachedProduct(productId) {
+     if (cache.has(productId)) {
+       return cache.get(productId);
+     }
+     
+     const product = await client.products.get(productId);
+     cache.set(productId, product);
+     setTimeout(() => cache.delete(productId), 300000); // 5 minutes
+     return product;
+   }
+   ```
+
+3. **Batch Operations**
+   ```javascript
+   // Create multiple products in parallel
+   const products = [
+     { id: 'PROD-001', name: 'Product 1' },
+     { id: 'PROD-002', name: 'Product 2' },
+     { id: 'PROD-003', name: 'Product 3' }
+   ];
+   
+   const results = await Promise.all(
+     products.map(product => client.products.create(product))
+   );
+   ```
+
+---
+
+## Troubleshooting
+
+### Common Issues and Solutions
+
+#### QR Code Scanning Problems
+
+**Issue**: QR code won't scan
+**Solutions**:
+- Ensure good lighting conditions
+- Clean camera lens
+- Check QR code isn't damaged
+- Try different scanning app
+- Verify QR code is printed correctly
+
+**Issue**: Invalid QR code error
+**Solutions**:
+- Verify product exists in system
+- Check if product is active
+- Ensure network connectivity
+- Try refreshing the page
+
+#### Wallet Connection Issues
+
+**Issue**: Wallet won't connect
+**Solutions**:
+- Check wallet is installed and unlocked
+- Verify browser extension is enabled
+- Try refreshing the page
+- Clear browser cache
+- Check network settings
+
+**Issue**: Transaction failed
+**Solutions**:
+- Check wallet balance (need XLM for fees)
+- Verify network is correct (testnet/mainnet)
+- Check transaction parameters
+- Try again after network congestion clears
+
+#### API Integration Issues
+
+**Issue**: Authentication failed
+**Solutions**:
+- Verify API key is correct
+- Check API key hasn't expired
+- Ensure correct header format
+- Verify request URL is correct
+
+**Issue**: Rate limit exceeded
+**Solutions**:
+- Implement exponential backoff
+- Check current usage against limits
+- Consider upgrading API tier
+- Optimize API calls
+
+### Error Messages Reference
+
+#### Product Registration Errors
+
+- `PRODUCT_ID_EXISTS`: Product ID already in use
+- `INVALID_CERTIFICATION`: Certification is invalid or expired
+- `MISSING_REQUIRED_FIELD`: Required information is missing
+- `INVALID_LOCATION`: Location coordinates are invalid
+
+#### Event Addition Errors
+
+- `UNAUTHORIZED_ACCESS`: Not authorized to add events
+- `INVALID_EVENT_TYPE`: Event type is not recognized
+- `MISSING_METADATA`: Required metadata is missing
+- `BLOCKCHAIN_ERROR`: Blockchain transaction failed
+
+#### System Errors
+
+- `DATABASE_CONNECTION_FAILED`: Database is unavailable
+- `BLOCKCHAIN_SYNC_ERROR`: Blockchain sync issue
+- `RATE_LIMIT_EXCEEDED`: Too many requests
+- `INTERNAL_SERVER_ERROR`: Unexpected system error
+
+### Getting Help
+
+#### Support Channels
+
+1. **Documentation**: [docs.chainlogistics.io](https://docs.chainlogistics.io)
+2. **API Reference**: Interactive API docs
+3. **Community Forum**: [forum.chainlogistics.io](https://forum.chainlogistics.io)
+4. **Support Email**: support@chainlogistics.io
+5. **Status Page**: [status.chainlogistics.io](https://status.chainlogistics.io)
+
+#### Reporting Issues
+
+When reporting issues, include:
+- Error message
+- Steps to reproduce
+- Browser/device information
+- Time of occurrence
+- Screenshots if applicable
+
+---
+
+## Best Practices
+
+### For Producers
+
+#### Data Quality
+- Use consistent naming conventions
+- Provide detailed, accurate information
+- Keep product information up-to-date
+- Use high-quality photos and documents
+
+#### Security
+- Protect wallet credentials
+- Use secure internet connections
+- Implement access controls for team members
+- Regular security audits
+
+#### Compliance
+- Maintain current certifications
+- Keep documentation complete
+- Follow industry standards
+- Prepare for audits
+
+### For Supply Chain Partners
+
+#### Event Management
+- Add events promptly
+- Provide complete information
+- Upload supporting documents
+- Maintain event chronology
+
+#### Quality Assurance
+- Implement quality checks
+- Document all processes
+- Monitor conditions
+- Address issues quickly
+
+#### Communication
+- Notify partners of delays
+- Share relevant information
+- Respond to inquiries promptly
+- Maintain transparency
+
+### For Consumers
+
+#### Verification
+- Always scan QR codes before purchase
+- Review product journey
+- Check certification validity
+- Report suspicious activities
+
+#### Feedback
+- Provide honest product reviews
+- Report quality issues
+- Share experiences
+- Help improve the system
+
+### For Developers
+
+#### Integration
+- Use official SDKs when possible
+- Implement proper error handling
+- Follow rate limiting guidelines
+- Test thoroughly in sandbox
+
+#### Security
+- Protect API keys
+- Use HTTPS for all requests
+- Validate input data
+- Implement proper authentication
+
+#### Performance
+- Cache responses appropriately
+- Use batch operations
+- Optimize API calls
+- Monitor performance metrics
+
+---
+
+## FAQ
+
+### General Questions
+
+**Q: What is ChainLogistics?**  
+A: ChainLogistics is a decentralized supply chain tracking platform built on Stellar blockchain that enables transparent, tamper-proof tracking of products from origin to consumer.
+
+**Q: How does ChainLogistics ensure data integrity?**  
+A: All tracking events are recorded on the Stellar blockchain, which provides immutable, cryptographically verified records. Once an event is recorded, it cannot be altered or deleted.
+
+**Q: Do I need cryptocurrency to use ChainLogistics?**  
+A: Yes, you need a Stellar wallet with XLM to pay for transaction fees. However, the fees are minimal (typically less than 0.01 XLM per transaction).
+
+**Q: Is my data private?**  
+A: ChainLogistics uses a hybrid approach. Product tracking data is public on the blockchain for transparency, but user account information and business details are stored securely off-chain and only accessible to authorized parties.
+
+### Producer Questions
+
+**Q: How do I register my first product?**  
+A: After connecting your wallet and completing producer onboarding, navigate to the "Products" section and click "Register New Product". Fill in the required product details and submit. The transaction will be recorded on the blockchain.
+
+**Q: Can I update product information after registration?**  
+A: Basic product information like name and description cannot be changed after registration for security reasons. However, you can add new tracking events and certifications at any time.
+
+**Q: What happens if I lose my wallet credentials?**  
+A: If you lose your wallet credentials, you will lose access to your account. This is why it's critical to backup your recovery phrase securely. ChainLogistics cannot recover lost credentials.
+
+**Q: How do I authorize partners to add tracking events?**  
+A: In the product details view, navigate to the "Authorized Partners" section and add the wallet addresses of partners you want to authorize. They will then be able to add tracking events to your products.
+
+### Supply Chain Partner Questions
+
+**Q: How do I add tracking events?**  
+A: When you receive a product, scan its QR code or enter its ID. Navigate to the "Add Event" section, select the event type (e.g., "received", "shipped", "processed"), fill in the required information, and submit.
+
+**Q: What event types are available?**  
+A: Common event types include: created, received, shipped, in_transit, processed, quality_checked, delivered, and custom events for specific workflows.
+
+**Q: Can I add events to products I don't own?**  
+A: Only if the product owner has authorized your wallet address. Contact the product owner to request authorization.
+
+**Q: What information should I include in tracking events?**  
+A: Include location, timestamp, relevant conditions (temperature, humidity if applicable), any quality checks performed, and supporting documentation.
+
+### Consumer Questions
+
+**Q: How do I verify a product's authenticity?**  
+A: Scan the product's QR code using the ChainLogistics mobile app or web portal. You'll see the complete product journey from origin to current location, along with all tracking events and certifications.
+
+**Q: What should I do if I suspect a product is counterfeit?**  
+A: Use the "Report Issue" feature in the product details view to report suspicious products. Include photos and any evidence you have. The report will be sent to the product owner and administrators.
+
+**Q: Can I see the environmental impact of products?**  
+A: Yes, if the producer and partners have included environmental data (carbon footprint, temperature logs, etc.), this information will be visible in the product journey.
+
+**Q: How do I report quality issues?**  
+A: Navigate to the product details, click "Report Issue", select the issue type, and provide details. This creates a permanent record on the blockchain.
+
+### Administrator Questions
+
+**Q: How do I manage user permissions?**  
+A: In the Admin Dashboard, navigate to "User Management". You can view, approve, suspend, or remove users. You can also assign roles and permissions.
+
+**Q: What happens when the contract is paused?**  
+A: When paused, no new tracking events can be added, and product registrations are disabled. Existing data remains readable. This is used during emergencies or upgrades.
+
+**Q: How do I initiate a contract upgrade?**  
+A: Contract upgrades require multi-signature approval. Submit a proposal through the Admin Dashboard, wait for the required number of approvals, then execute the upgrade.
+
+**Q: Can I export data for analysis?**  
+A: Yes, use the "Export" feature in the Admin Dashboard to export tracking data, user data, or statistics in CSV or JSON format.
+
+### Developer Questions
+
+**Q: How do I get API access?**  
+A: Register for a developer account in the portal, then navigate to "API Keys" to generate your API key. Review the API documentation for integration guidelines.
+
+**Q: What are the rate limits?**  
+A: The API has rate limits of 100 requests per minute per API key. For higher limits, contact support to discuss enterprise plans.
+
+**Q: How do I handle errors?**  
+A: All API errors return structured JSON with error codes and messages. Refer to the Error Handling Standards documentation for detailed error handling patterns.
+
+**Q: Is there a testnet for development?**  
+A: Yes, ChainLogistics operates on Stellar testnet for development. Use testnet XLM for testing. Production requires mainnet XLM.
+
+### Security Questions
+
+**Q: How secure is my data?**  
+A: Data is secured through blockchain cryptography, HTTPS encryption, and secure off-chain storage. We follow industry best practices for data security.
+
+**Q: What happens during a network outage?**  
+A: During Stellar network outages, you cannot submit new transactions. However, you can still view existing data. Transactions will be queued and submitted when the network recovers.
+
+**Q: How do I report a security vulnerability?**  
+A: Email security@chainlogistics.io with details. We follow responsible disclosure practices and may offer bounties for critical vulnerabilities.
+
+---
+
+## Video Tutorials
+
+### Getting Started
+
+- **[Wallet Setup Guide](https://youtube.com/watch?v=example1)** - How to set up and secure your Freighter wallet (5 min)
+- **[Account Registration](https://youtube.com/watch?v=example2)** - Step-by-step account registration walkthrough (3 min)
+- **[Platform Overview](https://youtube.com/watch?v=example3)** - Quick tour of the ChainLogistics platform (8 min)
+
+### Producer Tutorials
+
+- **[Registering Your First Product](https://youtube.com/watch?v=example4)** - Complete product registration walkthrough (7 min)
+- **[Managing Product Information](https://youtube.com/watch?v=example5)** - How to update and maintain product data (6 min)
+- **[Authorizing Partners](https://youtube.com/watch?v=example6)** - Setting up partner authorizations (5 min)
+- **[Understanding Certifications](https://youtube.com/watch?v=example7)** - Adding and managing product certifications (4 min)
+
+### Supply Chain Partner Tutorials
+
+- **[Adding Tracking Events](https://youtube.com/watch?v=example8)** - How to add various types of tracking events (6 min)
+- **[Scanning QR Codes](https://youtube.com/watch?v=example9)** - Using the mobile app for quick event entry (3 min)
+- **[Batch Event Processing](https://youtube.com/watch?v=example10)** - Handling multiple products efficiently (5 min)
+- **[Quality Check Workflows](https://youtube.com/watch?v=example11)** - Documenting quality inspections (4 min)
+
+### Consumer Tutorials
+
+- **[Verifying Product Authenticity](https://youtube.com/watch?v=example12)** - How to scan and verify products (3 min)
+- **[Understanding Product Journeys](https://youtube.com/watch?v=example13)** - Reading and interpreting tracking history (5 min)
+- **[Reporting Issues](https://youtube.com/watch?v=example14)** - How to report quality or authenticity concerns (4 min)
+
+### Administrator Tutorials
+
+- **[Admin Dashboard Overview](https://youtube.com/watch?v=example15)** - Complete admin dashboard walkthrough (10 min)
+- **[User Management](https://youtube.com/watch?v=example16)** - Managing users and permissions (7 min)
+- **[Contract Management](https://youtube.com/watch?v=example17)** - Pausing, unpausing, and upgrading contracts (8 min)
+- **[Multi-Signature Operations](https://youtube.com/watch?v=example18)** - Using multi-sig for administrative actions (6 min)
+
+### Developer Tutorials
+
+- **[API Integration Basics](https://youtube.com/watch?v=example19)** - Getting started with the ChainLogistics API (12 min)
+- **[SDK Usage](https://youtube.com/watch?v=example20)** - Using the official SDKs in your applications (10 min)
+- **[Webhook Setup](https://youtube.com/watch?v=example21)** - Setting up real-time event notifications (8 min)
+- **[Error Handling](https://youtube.com/watch?v=example22)** - Best practices for handling API errors (6 min)
+
+### Advanced Topics
+
+- **[Smart Contract Interaction](https://youtube.com/watch?v=example23)** - Direct smart contract integration (15 min)
+- **[Custom Workflows](https://youtube.com/watch?v=example24)** - Building custom tracking workflows (12 min)
+- **[Analytics and Reporting](https://youtube.com/watch?v=example25)** - Creating custom reports and dashboards (10 min)
+- **[Security Best Practices](https://youtube.com/watch?v=example26)** - Securing your integration (8 min)
+
+*Note: Video tutorials are hosted on our YouTube channel. New tutorials are added regularly. Subscribe to stay updated.*
+
+---
+
+## Conclusion
+
+ChainLogistics provides a comprehensive solution for transparent supply chain tracking. By following these guides and best practices, users can maximize the platform's benefits while ensuring data integrity and security.
+
+For additional information, support, or to provide feedback, please visit our [support portal](https://support.chainlogistics.io) or contact our team at support@chainlogistics.io.
+
+*This documentation is continuously updated. Last updated: March 15, 2024*
diff --git a/docs/gas_usage_benchmarks.md b/docs/gas_usage_benchmarks.md
new file mode 100644
index 00000000..6bff0d40
--- /dev/null
+++ b/docs/gas_usage_benchmarks.md
@@ -0,0 +1,31 @@
+# Smart Contract Gas Usage Benchmarks
+
+This document outlines the gas usage benchmarks captured for the main execution paths in the ChainLogistics smart contracts. The measurements reflect the **budget consumed** per integration test flow, measured directly from the Soroban testing environment environment budget tracker.
+
+## Product Lifecycle Gas Costs
+
+### 1. Product Registration
+- **Function / Flow**: `register_product`
+- **CPU Instruction Cost**: 474,354
+- **Memory Bytes Cost**: 202,201
+
+### 2. Event Tracking
+Events appended to a product's lifecycle have slightly varying costs based on the state growth and the number of authorized actors:
+- **First Event (by Owner)**: `tracking_add_event`
+  - CPU Instruction Cost: 311,449
+  - Memory Bytes Cost: 144,980
+- **Second Event (by Actor A)**: `tracking_add_event`
+  - CPU Instruction Cost: 337,196
+  - Memory Bytes Cost: 145,197
+- **Third Event (by Actor B)**: `tracking_add_event`
+  - CPU Instruction Cost: 345,262
+  - Memory Bytes Cost: 151,419
+
+### 3. Ownership Transfer
+- **Function / Flow**: `transfer_product`
+  - CPU Instruction Cost: 414,386
+  - Memory Bytes Cost: 149,538
+
+---
+
+_These metrics are continuously tracked by integration tests in `smart-contract/contracts/src/test/integration_tests.rs`._
diff --git a/docs/monitoring.md b/docs/monitoring.md
new file mode 100644
index 00000000..c032a4f8
--- /dev/null
+++ b/docs/monitoring.md
@@ -0,0 +1,66 @@
+# Monitoring and Performance
+
+This project includes frontend monitoring for user experience and blockchain call reliability.
+
+## What is tracked
+
+- Core Web Vitals: `CLS`, `FCP`, `LCP`, `INP`, `TTFB`
+- Contract interaction analytics:
+  - method name
+  - latency (`durationMs`)
+  - success/failure
+  - context (e.g. product/event id, result count)
+- Error events:
+  - runtime errors (`window.error`)
+  - unhandled promise rejections
+  - React error boundaries (`ErrorBoundary`, `app/error.tsx`)
+
+## Implementation points
+
+- Monitoring core: `frontend/lib/analytics.ts`
+- Auto-bootstrap in app root: `frontend/components/analytics/MonitoringBootstrap.tsx`
+- Budget alert notifications: `frontend/components/analytics/PerformanceBudgetAlerts.tsx`
+- Contract instrumentation:
+  - `frontend/lib/stellar/contractClient.ts`
+  - `frontend/lib/contract/events.ts`
+
+## Performance budgets
+
+### Core Web Vitals
+
+- `CLS`: warning `0.10`, critical `0.25`
+- `FCP`: warning `1800ms`, critical `3000ms`
+- `LCP`: warning `2500ms`, critical `4000ms`
+- `INP`: warning `200ms`, critical `500ms`
+- `TTFB`: warning `800ms`, critical `1800ms`
+
+### Contract interactions
+
+- `CONTRACT_INTERACTION_MS`: warning `1200ms`, critical `2500ms`
+
+When a metric crosses a threshold, the system emits a `performance_budget_breach` event and raises a client alert.
+
+## Dashboard integration
+
+Set `NEXT_PUBLIC_MONITORING_ENDPOINT` to stream events to your monitoring backend.
+
+Example:
+
+```bash
+NEXT_PUBLIC_MONITORING_ENDPOINT=https://monitoring.example.com/events
+```
+
+Payload format:
+
+```json
+{
+  "type": "web_vital | contract_interaction | error | performance_budget_breach",
+  "timestamp": "2026-03-25T12:00:00.000Z",
+  "route": "/products/PROD-1",
+  "environment": "production",
+  "data": {}
+}
+```
+
+If no endpoint is configured, events are logged locally in non-production environments.
+
diff --git a/frontend b/frontend
deleted file mode 160000
index e1125a0d..00000000
--- a/frontend
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit e1125a0d8f386adf5c2d66bad4beea707785629b
diff --git a/frontend/.env.example b/frontend/.env.example
new file mode 100644
index 00000000..9a116853
--- /dev/null
+++ b/frontend/.env.example
@@ -0,0 +1,36 @@
+# Frontend environment variables for local development
+# Copy to .env.local and adjust values.
+
+# Required for contract interactions
+NEXT_PUBLIC_CONTRACT_ID=YOUR_SOROBAN_CONTRACT_ID
+NEXT_PUBLIC_STELLAR_NETWORK=testnet
+NEXT_PUBLIC_RPC_URL=https://soroban-testnet.stellar.org
+
+# Optional app/runtime configuration
+NEXT_PUBLIC_APP_URL=http://localhost:3000
+NEXT_PUBLIC_WS_URL=ws://localhost:3001
+NEXT_PUBLIC_MONITORING_ENDPOINT=
+NEXT_PUBLIC_USE_MOCK_DATA=false
+NEXT_PUBLIC_E2E_MOCKS=false
+
+# Optional multi-chain configuration
+NEXT_PUBLIC_STELLAR_RPC_URL=https://soroban-testnet.stellar.org
+NEXT_PUBLIC_STELLAR_CONTRACT_ID=
+
+NEXT_PUBLIC_ETH_RPC_URL=https://eth-mainnet.g.alchemy.com/v2/
+NEXT_PUBLIC_ETH_CONTRACT_ID=
+
+NEXT_PUBLIC_POLYGON_RPC_URL=https://polygon-rpc.com
+NEXT_PUBLIC_POLYGON_CONTRACT_ID=
+
+NEXT_PUBLIC_HYPERLEDGER_RPC_URL=
+NEXT_PUBLIC_HYPERLEDGER_CONTRACT_ID=
+
+NEXT_PUBLIC_CORDA_RPC_URL=
+NEXT_PUBLIC_CORDA_CONTRACT_ID=
+
+NEXT_PUBLIC_QUORUM_RPC_URL=
+NEXT_PUBLIC_QUORUM_CONTRACT_ID=
+
+# Playwright (optional override)
+PLAYWRIGHT_BASE_URL=http://127.0.0.1:3000
diff --git a/frontend/.gitignore b/frontend/.gitignore
new file mode 100644
index 00000000..34e4418e
--- /dev/null
+++ b/frontend/.gitignore
@@ -0,0 +1,46 @@
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+/.pnp
+.pnp.*
+.yarn/*
+!.yarn/patches
+!.yarn/plugins
+!.yarn/releases
+!.yarn/versions
+
+# testing
+/coverage
+
+# next.js
+/.next/
+/out/
+
+# production
+/build
+
+# misc
+.DS_Store
+*.pem
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.pnpm-debug.log*
+
+# env files (can opt-in for committing if needed)
+.env*
+!.env.example
+
+# vercel
+.vercel
+
+# typescript
+*.tsbuildinfo
+next-env.d.ts
+
+# Playwright E2E
+/playwright-report/
+/test-results/
diff --git a/frontend/ARCHITECTURE.md b/frontend/ARCHITECTURE.md
new file mode 100644
index 00000000..0dea88be
--- /dev/null
+++ b/frontend/ARCHITECTURE.md
@@ -0,0 +1,45 @@
+# Frontend Architecture
+
+## Goals
+
+- Follow Next.js App Router conventions.
+- Keep UI and non-UI concerns separated.
+- Provide a scalable structure for a supply chain tracking application.
+- Centralize Stellar/Soroban integration.
+- Keep the dev server runnable without requiring chain configuration.
+
+## High-level structure
+
+- `app/`: Routes (App Router). Uses route groups for separation.
+- `components/`: Reusable UI and feature components.
+- `lib/`: Non-UI code (SDK integration, state, hooks, utilities, shared types).
+
+## Routing
+
+- `app/(marketing)`: Public/landing pages.
+- `app/(app)`: Application routes (registration, products, tracking, dashboard).
+
+Route groups do not affect the URL; they only organize the filesystem.
+
+## Components
+
+- `components/ui`: Low-level reusable primitives (no domain logic).
+- `components/<feature>`: Feature-oriented components (wallet/products/tracking/forms).
+- `components/layouts`: App shell pieces.
+
+## State management
+
+- Global state uses Zustand in `lib/state/*`.
+- Page-local state stays local or in `react-hook-form`.
+
+## Stellar / Soroban integration
+
+- All SDK and contract-client code lives under `lib/stellar/*`.
+- Modules export functions and types only; no side effects at import time.
+
+This keeps pages/components free of direct SDK wiring and makes later testing/mocking easier.
+
+## TypeScript
+
+- Shared domain types live in `lib/types/*`.
+- The `@/*` path alias maps to the `frontend/` project root.
diff --git a/frontend/README.md b/frontend/README.md
new file mode 100644
index 00000000..748f4c50
--- /dev/null
+++ b/frontend/README.md
@@ -0,0 +1,61 @@
+
+# ChainLogistics Frontend
+
+Next.js App Router frontend scaffold for a supply chain tracking application.
+
+## Getting Started
+
+```bash
+npm install
+cp .env.example .env.local
+npm run dev
+```
+
+Open http://localhost:3000
+
+## Environment Variables
+
+Use `.env.example` as the source of truth for frontend environment variables.
+
+- `NEXT_PUBLIC_CONTRACT_ID` is required for real contract interactions.
+- `NEXT_PUBLIC_STELLAR_NETWORK` and `NEXT_PUBLIC_RPC_URL` control network/RPC behavior.
+- `NEXT_PUBLIC_E2E_MOCKS` and `NEXT_PUBLIC_USE_MOCK_DATA` help with test/local mock flows.
+
+## Scripts
+
+```bash
+npm run dev
+npm run build
+npm run start
+npm run lint
+npm test
+npm run e2e
+```
+
+## Project structure
+
+```txt
+app/
+  (marketing)/          Public landing/marketing pages
+  (app)/                Application routes (register/products/tracking/dashboard)
+  api/                  Route handlers (API endpoints)
+
+components/
+  ui/                   Reusable primitives (no domain logic)
+  layouts/              App shell pieces
+  wallet/               Wallet-related components
+  products/             Product-related components
+  tracking/             Tracking/event components
+  forms/                Form components
+
+lib/
+  stellar/              Stellar/Soroban integration (SDK + contract client)
+  state/                Global state (Zustand)
+  hooks/                Custom hooks
+  utils/                Helpers/formatters/constants
+  types/                Shared TypeScript domain types
+```
+
+## Architectural decisions
+
+See `ARCHITECTURE.md` for the reasoning behind routing, state management, and Stellar integration placement.
diff --git a/frontend/app/(app)/dashboard/page.tsx b/frontend/app/(app)/dashboard/page.tsx
new file mode 100644
index 00000000..e197db0d
--- /dev/null
+++ b/frontend/app/(app)/dashboard/page.tsx
@@ -0,0 +1,440 @@
+"use client";
+
+import * as React from "react";
+import dynamic from "next/dynamic";
+import {
+  Activity,
+  Boxes,
+  MapPinned,
+  RefreshCw,
+  TrendingUp,
+} from "lucide-react";
+
+import type { Product } from "@/lib/types/product";
+import type { TimelineEvent } from "@/lib/types/tracking";
+import { useWalletStore } from "@/lib/state/wallet.store";
+import { getProductsByOwner } from "@/lib/contract/products";
+import { fetchProductEvents } from "@/lib/contract/events";
+import { ContractClientError } from "@/lib/stellar/contractClient";
+import { cn } from "@/lib/utils";
+import { DASHBOARD_REFRESH_INTERVAL_MS, DASHBOARD_RECENT_EVENTS_LIMIT } from "@/lib/constants";
+import { formatNumber, formatTime } from "@/lib/i18n/format";
+import { useTranslation } from "react-i18next";
+
+import { StatCard } from "@/components/analytics/StatCard";
+
+// ─── Lazy-loaded heavy components (recharts, etc.) ───────────────────────────
+// These are large chart/feed components that are only needed after the initial
+// page paint, so they are split into separate JS chunks via next/dynamic.
+const EventsChart = dynamic(
+  () => import("@/components/analytics/EventsChart").then((m) => ({ default: m.EventsChart })),
+  {
+    ssr: false,
+    loading: () => (
+      <div className="h-72 w-full animate-pulse rounded-xl bg-zinc-100" aria-hidden="true" />
+    ),
+  }
+);
+
+const ActivityFeed = dynamic(
+  () => import("@/components/analytics/ActivityFeed").then((m) => ({ default: m.ActivityFeed })),
+  {
+    ssr: false,
+    loading: () => (
+      <div className="h-40 w-full animate-pulse rounded-xl bg-zinc-100" aria-hidden="true" />
+    ),
+  }
+);
+
+// recharts components are only imported inside the lazy chunk above — the main
+// bundle no longer carries them. The inline LineChart below is kept here
+// because it is co-located with the dashboard-specific activityOverTime state.
+// We defer the recharts import itself to avoid the initial bundle bloat.
+const DynamicLineChart = dynamic(
+  () =>
+    import("recharts").then(({ LineChart, Line, XAxis, YAxis, Tooltip, ResponsiveContainer }) => {
+      function ActivityLineChart({ data }: { data: { date: string; count: number }[] }) {
+        return (
+          <ResponsiveContainer width="100%" height="100%">
+            <LineChart data={data} margin={{ top: 10, right: 10, left: 0, bottom: 10 }}>
+              <XAxis dataKey="date" tick={{ fontSize: 12 }} />
+              <YAxis allowDecimals={false} tick={{ fontSize: 12 }} />
+              <Tooltip />
+              <Line type="monotone" dataKey="count" stroke="#2563eb" strokeWidth={2} dot={false} />
+            </LineChart>
+          </ResponsiveContainer>
+        );
+      }
+      return { default: ActivityLineChart };
+    }),
+  {
+    ssr: false,
+    loading: () => (
+      <div className="h-full animate-pulse rounded-lg bg-zinc-100" aria-hidden="true" />
+    ),
+  }
+);
+
+type EventsByTypeDatum = { type: string; count: number };
+type ActivityDatum = { date: string; count: number };
+
+function formatDay(tsSeconds: number) {
+  const d = new Date(tsSeconds * 1000);
+  const y = d.getFullYear();
+  const m = String(d.getMonth() + 1).padStart(2, "0");
+  const day = String(d.getDate()).padStart(2, "0");
+  return `${y}-${m}-${day}`;
+}
+
+export default function DashboardPage() {
+  const { t } = useTranslation();
+  const { publicKey, status } = useWalletStore();
+
+  const [products, setProducts] = React.useState<Product[]>([]);
+  const [events, setEvents] = React.useState<TimelineEvent[]>([]);
+  const [isLoading, setIsLoading] = React.useState(false);
+  const [error, setError] = React.useState<
+    | null
+    | {
+        title: string;
+        message: string;
+        detail?: string;
+        variant: "warning" | "error";
+        canRetry: boolean;
+        showConfigHint: boolean;
+      }
+  >(null);
+  const [lastUpdatedAt, setLastUpdatedAt] = React.useState<number | null>(null);
+
+  const load = React.useCallback(async () => {
+    if (!publicKey) return;
+
+    setIsLoading(true);
+    setError(null);
+
+    try {
+      const fetchedProducts = await getProductsByOwner(publicKey);
+      setProducts(fetchedProducts);
+
+      if (fetchedProducts.length === 0) {
+        setEvents([]);
+        setLastUpdatedAt(Date.now());
+        return;
+      }
+
+      const settled = await Promise.allSettled(
+        fetchedProducts.map((p) => fetchProductEvents(p.id))
+      );
+      const all = settled
+        .filter((r): r is PromiseFulfilledResult<TimelineEvent[]> => r.status === "fulfilled")
+        .flatMap((r) => r.value);
+
+      const firstRejected = settled.find(
+        (r): r is PromiseRejectedResult => r.status === "rejected"
+      );
+
+      all.sort((a, b) => b.timestamp - a.timestamp);
+      setEvents(all);
+      setLastUpdatedAt(Date.now());
+
+      const rejectedCount = settled.filter((r) => r.status === "rejected").length;
+      if (rejectedCount > 0 && all.length === 0) {
+        const reason = firstRejected?.reason;
+        const normalizedTitle = t("events_unavailable");
+        const isContractNotConfigured =
+          reason instanceof ContractClientError && reason.code === "CONTRACT_NOT_CONFIGURED";
+
+        setError({
+          title: normalizedTitle,
+          message: isContractNotConfigured
+            ? t("contract_not_configured_warning")
+            : t("events_load_warning"),
+          detail: reason instanceof Error ? reason.message : undefined,
+          variant: "warning",
+          canRetry: true,
+          showConfigHint: isContractNotConfigured,
+        });
+      }
+    } catch (e) {
+      const isContractNotConfigured =
+        e instanceof ContractClientError && e.code === "CONTRACT_NOT_CONFIGURED";
+      setError({
+        title: t("failed_to_load_dashboard"),
+        message: isContractNotConfigured
+          ? t("contract_not_configured_error")
+          : t("unable_to_load_dashboard"),
+        detail: e instanceof Error ? e.message : undefined,
+        variant: "error",
+        canRetry: true,
+        showConfigHint: isContractNotConfigured,
+      });
+    } finally {
+      setIsLoading(false);
+    }
+  }, [publicKey, t]);
+
+  React.useEffect(() => {
+    if (status !== "connected" || !publicKey) return;
+    
+    // Use setTimeout to avoid calling setState synchronously in effect
+    const timeoutId = setTimeout(() => {
+      load();
+    }, 0);
+    
+    return () => clearTimeout(timeoutId);
+  }, [status, publicKey, load]);
+
+  React.useEffect(() => {
+    if (status !== "connected" || !publicKey) return;
+
+    let intervalId: ReturnType<typeof setInterval> | null = null;
+
+    const startPolling = () => {
+      if (intervalId) return;
+      intervalId = setInterval(() => {
+        void load();
+      }, DASHBOARD_REFRESH_INTERVAL_MS);
+    };
+
+    const stopPolling = () => {
+      if (intervalId) {
+        clearInterval(intervalId);
+        intervalId = null;
+      }
+    };
+
+    const handleVisibilityChange = () => {
+      if (document.hidden) {
+        stopPolling();
+      } else {
+        // Refresh immediately when the user returns, then resume polling.
+        void load();
+        startPolling();
+      }
+    };
+
+    // Only poll while the tab is visible.
+    if (!document.hidden) {
+      startPolling();
+    }
+
+    document.addEventListener("visibilitychange", handleVisibilityChange);
+
+    return () => {
+      stopPolling();
+      document.removeEventListener("visibilitychange", handleVisibilityChange);
+    };
+  }, [status, publicKey, load]);
+
+  const totalProducts = products.length;
+  const totalEvents = events.length;
+
+  const eventsByType: EventsByTypeDatum[] = React.useMemo(() => {
+    const map = new Map<string, number>();
+    for (const e of events) {
+      const t = e.event_type || "UNKNOWN";
+      map.set(t, (map.get(t) ?? 0) + 1);
+    }
+    return Array.from(map.entries()).map(([type, count]) => ({ type, count }));
+  }, [events]);
+
+  const activityOverTime: ActivityDatum[] = React.useMemo(() => {
+    const map = new Map<string, number>();
+    for (const e of events) {
+      const day = formatDay(e.timestamp);
+      map.set(day, (map.get(day) ?? 0) + 1);
+    }
+    return Array.from(map.entries())
+      .sort((a, b) => a[0].localeCompare(b[0]))
+      .map(([date, count]) => ({ date, count }));
+  }, [events]);
+
+  const topOrigins = React.useMemo(() => {
+    const map = new Map<string, number>();
+    for (const p of products) {
+      const origin = p.origin?.location || "Unknown";
+      map.set(origin, (map.get(origin) ?? 0) + 1);
+    }
+    return Array.from(map.entries())
+      .map(([origin, count]) => ({ origin, count }))
+      .sort((a, b) => b.count - a.count)
+      .slice(0, 5);
+  }, [products]);
+
+  const recentEvents = React.useMemo(() => events.slice(0, DASHBOARD_RECENT_EVENTS_LIMIT), [events]);
+
+  const topOriginDescription = React.useMemo(() => {
+    if (isLoading) return undefined;
+    const first = topOrigins[0];
+    if (!first) return t("no_products_yet");
+    return t("products_count", { count: first.count });
+  }, [isLoading, topOrigins, t]);
+
+  const canLoad = status === "connected" && Boolean(publicKey);
+
+  return (
+    <main className="mx-auto max-w-6xl px-6 py-10">
+      <div className="flex flex-col gap-4 sm:flex-row sm:items-start sm:justify-between">
+        <div>
+          <h1 className="text-2xl font-semibold text-zinc-900">{t("dashboard_title")}</h1>
+          <p className="mt-1 text-sm text-zinc-500">
+            {t("dashboard_subtitle")}
+          </p>
+        </div>
+
+        <div className="flex items-center gap-2">
+          <button
+            type="button"
+            onClick={() => void load()}
+            disabled={!canLoad || isLoading}
+            className={cn(
+              "inline-flex items-center gap-2 rounded-lg border px-4 py-2 text-sm font-semibold",
+              canLoad
+                ? "border-zinc-200 bg-white text-zinc-900 hover:bg-zinc-50"
+                : "border-zinc-200 bg-zinc-50 text-zinc-400",
+              isLoading && "opacity-50"
+            )}
+          >
+            <RefreshCw className={cn("h-4 w-4", isLoading && "animate-spin")} />
+            {t("refresh")}
+          </button>
+        </div>
+      </div>
+
+      {!canLoad ? (
+        <div className="mt-8 rounded-xl border border-zinc-200 bg-white p-8 shadow-sm">
+          <h2 className="text-lg font-semibold text-zinc-900">{t("connect_your_wallet")}</h2>
+          <p className="mt-1 text-sm text-zinc-600">
+            {t("connect_wallet_to_load")}
+          </p>
+        </div>
+      ) : null}
+
+      {error ? (
+        <div
+          className={cn(
+            "mt-6 rounded-xl border p-4 text-sm",
+            error.variant === "warning"
+              ? "border-amber-200 bg-amber-50 text-amber-900"
+              : "border-red-200 bg-red-50 text-red-900"
+          )}
+        >
+          <div className="font-semibold">{error.title}</div>
+          <div className="mt-1">{error.message}</div>
+          {error.detail ? (
+            <div className="mt-1 text-xs opacity-80">{error.detail}</div>
+          ) : null}
+
+          <div className="mt-3 flex flex-wrap items-center gap-2">
+            {error.canRetry ? (
+              <button
+                type="button"
+                onClick={() => void load()}
+                disabled={!canLoad || isLoading}
+                className={cn(
+                  "rounded-lg px-4 py-2 text-sm font-semibold disabled:opacity-50",
+                  error.variant === "warning"
+                    ? "bg-amber-900 text-amber-50 hover:bg-amber-950"
+                    : "bg-red-600 text-white hover:bg-red-700"
+                )}
+              >
+                {t("retry")}
+              </button>
+            ) : null}
+
+            {error.showConfigHint ? (
+              <div className="text-xs opacity-80">
+                Set `NEXT_PUBLIC_CONTRACT_ID` in `.env.local`, restart the dev server, then refresh.
+              </div>
+            ) : null}
+          </div>
+        </div>
+      ) : null}
+
+      <div className="mt-8 grid grid-cols-1 gap-4 sm:grid-cols-2 lg:grid-cols-4">
+        <StatCard
+          label={t("total_products")}
+          value={isLoading ? "—" : formatNumber(totalProducts)}
+          description={t("products_visible_to_wallet")}
+          icon={<Boxes className="h-6 w-6" />}
+        />
+        <StatCard
+          label={t("total_events")}
+          value={isLoading ? "—" : formatNumber(totalEvents)}
+          description={t("all_loaded_events")}
+          icon={<Activity className="h-6 w-6" />}
+        />
+        <StatCard
+          label={t("top_origin")}
+          value={isLoading ? "—" : (topOrigins[0]?.origin ?? "—")}
+          description={topOriginDescription}
+          icon={<MapPinned className="h-6 w-6" />}
+        />
+        <StatCard
+          label={t("last_updated")}
+          value={lastUpdatedAt ? formatTime(lastUpdatedAt) : "—"}
+          description={t("auto_refreshes")}
+          icon={<TrendingUp className="h-6 w-6" />}
+        />
+      </div>
+
+      <div className="mt-6 grid grid-cols-1 gap-6 lg:grid-cols-2">
+        <EventsChart data={eventsByType} />
+
+        <div className="rounded-xl border border-zinc-200 bg-white p-5 shadow-sm">
+          <div>
+            <h2 className="text-sm font-semibold text-zinc-900">{t("activity_over_time")}</h2>
+            <p className="mt-1 text-sm text-zinc-500">
+              {t("events_grouped_by_day")}
+            </p>
+          </div>
+          <div className="mt-4 h-72">
+            {isLoading ? (
+              <div className="h-full rounded-lg bg-zinc-100 animate-pulse" aria-hidden="true" />
+            ) : activityOverTime.length === 0 ? (
+              <div className="h-full rounded-lg border border-dashed border-zinc-200 bg-zinc-50 flex items-center justify-center text-sm text-zinc-500">
+                {t("no_activity_yet")}
+              </div>
+            ) : (
+              <DynamicLineChart data={activityOverTime} />
+            )}
+          </div>
+        </div>
+      </div>
+
+      <div className="mt-6 grid grid-cols-1 gap-6 lg:grid-cols-3">
+        <div className="rounded-xl border border-zinc-200 bg-white p-5 shadow-sm lg:col-span-1">
+          <div>
+            <h2 className="text-sm font-semibold text-zinc-900">{t("top_origins")}</h2>
+            <p className="mt-1 text-sm text-zinc-500">{t("most_common_origins")}</p>
+          </div>
+
+          <div className="mt-4">
+            {isLoading ? (
+              <div className="space-y-3" aria-hidden="true">
+                {Array.from({ length: 5 }, (_, i) => (
+                  <div key={i} className="h-10 rounded-lg bg-zinc-100 animate-pulse" />
+                ))}
+              </div>
+            ) : topOrigins.length === 0 ? (
+              <div className="rounded-lg border border-dashed border-zinc-200 bg-zinc-50 p-6 text-sm text-zinc-500">
+                {t("no_products_yet")}
+              </div>
+            ) : (
+              <ul className="space-y-3">
+                {topOrigins.map((o) => (
+                  <li key={o.origin} className="flex items-center justify-between gap-3">
+                    <span className="text-sm font-medium text-zinc-900 truncate">{o.origin}</span>
+                    <span className="text-sm text-zinc-600">{formatNumber(o.count)}</span>
+                  </li>
+                ))}
+              </ul>
+            )}
+          </div>
+        </div>
+
+        <ActivityFeed events={recentEvents} isLoading={isLoading} className="lg:col-span-2" />
+      </div>
+    </main>
+  );
+}
diff --git a/frontend/app/(app)/layout.tsx b/frontend/app/(app)/layout.tsx
new file mode 100644
index 00000000..e1f49df4
--- /dev/null
+++ b/frontend/app/(app)/layout.tsx
@@ -0,0 +1,15 @@
+import { NavBar } from "@/components/layouts";
+import { ErrorBoundary } from "@/components/ErrorBoundary";
+
+export default function AppLayout({ children }: { children: React.ReactNode }) {
+  return (
+    <div className="min-h-screen bg-zinc-50 flex flex-col">
+      <NavBar />
+      <main id="main-content" className="flex-1">
+        <ErrorBoundary>
+          {children}
+        </ErrorBoundary>
+      </main>
+    </div>
+  );
+}
diff --git a/frontend/app/(app)/products/[id]/page.tsx b/frontend/app/(app)/products/[id]/page.tsx
new file mode 100644
index 00000000..73005531
--- /dev/null
+++ b/frontend/app/(app)/products/[id]/page.tsx
@@ -0,0 +1,27 @@
+import { Timeline } from "@/components/tracking";
+
+export default async function ProductDetailsPage({
+  params,
+}: {
+  params: Promise<{ id: string }>;
+}) {
+  const { id } = await params;
+
+  return (
+    <main className="mx-auto max-w-4xl px-6 py-10">
+      <div className="mb-8">
+        <h1 className="text-3xl font-bold text-gray-900">Product Tracking</h1>
+        <p className="mt-2 text-sm text-gray-600">
+          Product ID: <span className="font-mono font-medium">{id}</span>
+        </p>
+      </div>
+
+      <div className="rounded-lg border border-gray-200 bg-white p-6 shadow-sm">
+        <h2 className="mb-6 text-xl font-semibold text-gray-900">
+          Supply Chain Timeline
+        </h2>
+        <Timeline productId={id} />
+      </div>
+    </main>
+  );
+}
diff --git a/frontend/app/(app)/products/page.tsx b/frontend/app/(app)/products/page.tsx
new file mode 100644
index 00000000..d73ad1ff
--- /dev/null
+++ b/frontend/app/(app)/products/page.tsx
@@ -0,0 +1,170 @@
+"use client";
+
+import { useCallback, useEffect, useMemo, useState } from "react";
+import { usePathname, useRouter, useSearchParams } from "next/navigation";
+import { useWallet } from "@/lib/hooks/useWallet";
+import { getProductsByOwner } from "@/lib/contract/products";
+import type { Product } from "@/lib/types/product";
+import { ProductList } from "@/components/products/ProductList";
+import { ProductFilters, type FilterState } from "@/components/products/ProductFilters";
+
+export default function ProductsPage() {
+  const { publicKey } = useWallet();
+  const router = useRouter();
+  const pathname = usePathname();
+  const searchParams = useSearchParams();
+  const [products, setProducts] = useState<Product[]>([]);
+  const [isLoading, setIsLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+  const [filters, setFilters] = useState<FilterState>({
+    search: "",
+    owner: "",
+    category: "",
+    status: "all",
+    dateFrom: "",
+    dateTo: "",
+  });
+
+  useEffect(() => {
+    const next: FilterState = {
+      search: searchParams.get("q") ?? "",
+      owner: searchParams.get("owner") ?? "",
+      category: searchParams.get("category") ?? "",
+      status: (searchParams.get("status") as FilterState["status"]) ?? "all",
+      dateFrom: searchParams.get("from") ?? "",
+      dateTo: searchParams.get("to") ?? "",
+    };
+
+    if (next.status !== "all" && next.status !== "active" && next.status !== "inactive") {
+      next.status = "all";
+    }
+
+    // Use setTimeout to avoid calling setState synchronously in effect
+    const timeoutId = setTimeout(() => {
+      setFilters(next);
+    }, 0);
+    
+    return () => clearTimeout(timeoutId);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  useEffect(() => {
+    const t = setTimeout(() => {
+      const params = new URLSearchParams();
+      if (filters.search.trim()) params.set("q", filters.search.trim());
+      if (filters.owner) params.set("owner", filters.owner);
+      if (filters.category) params.set("category", filters.category);
+      if (filters.status !== "all") params.set("status", filters.status);
+      if (filters.dateFrom) params.set("from", filters.dateFrom);
+      if (filters.dateTo) params.set("to", filters.dateTo);
+
+      const qs = params.toString();
+      router.replace(qs ? `${pathname}?${qs}` : pathname);
+    }, 250);
+
+    return () => clearTimeout(t);
+  }, [filters, pathname, router]);
+
+  const fetchProducts = useCallback(async () => {
+    if (!publicKey) {
+      setProducts([]);
+      setIsLoading(false);
+      return;
+    }
+
+    setIsLoading(true);
+    setError(null);
+
+    try {
+      const fetchedProducts = await getProductsByOwner(publicKey);
+      setProducts(fetchedProducts);
+    } catch (err) {
+      console.error("Error fetching products:", err);
+      setError(
+        err instanceof Error
+          ? err.message
+          : "Failed to fetch products. Please check your connection and try again."
+      );
+    } finally {
+      setIsLoading(false);
+    }
+  }, [publicKey]);
+
+  // Fetch products
+  useEffect(() => {
+    // Use setTimeout to avoid calling setState synchronously in effect
+    const timeoutId = setTimeout(() => {
+      fetchProducts();
+    }, 0);
+    
+    return () => clearTimeout(timeoutId);
+  }, [fetchProducts]);
+
+  // Extract unique categories and owners for filter dropdowns
+  const availableCategories = useMemo(() => {
+    const categories = new Set(products.map((p) => p.category));
+    return Array.from(categories).sort();
+  }, [products]);
+
+  const availableOwners = useMemo(() => {
+    const owners = new Set(products.map((p) => p.owner));
+    return Array.from(owners).sort();
+  }, [products]);
+
+  const suggestions = useMemo(() => {
+    const map = new Map<string, { id: string; label: string }>();
+    for (const p of products) {
+      map.set(`name:${p.id}`, { id: `name:${p.id}`, label: p.name });
+      map.set(`id:${p.id}`, { id: `id:${p.id}`, label: p.id });
+      const origin = p.origin?.location;
+      if (origin) map.set(`origin:${origin}`, { id: `origin:${origin}`, label: origin });
+    }
+    return Array.from(map.values());
+  }, [products]);
+
+  return (
+    <main className="mx-auto max-w-7xl px-6 py-10">
+      <div className="mb-8">
+        <h1 className="text-3xl font-bold text-zinc-900 mb-2">Products</h1>
+        <p className="text-zinc-600">
+          Search and filter registered products on the blockchain
+        </p>
+      </div>
+
+      {error && (
+        <div className="bg-red-50 border border-red-200 rounded-lg p-4 mb-6">
+          <p className="text-red-800 text-sm font-medium">Unable to load products</p>
+          <p className="text-red-700 text-sm mt-1">{error}</p>
+          <div className="mt-3">
+            <button
+              type="button"
+              onClick={fetchProducts}
+              disabled={isLoading}
+              className="px-4 py-2 rounded-lg bg-red-600 text-white text-sm font-semibold hover:bg-red-700 disabled:opacity-50"
+            >
+              Retry
+            </button>
+          </div>
+        </div>
+      )}
+
+      {!publicKey && (
+        <div className="bg-blue-50 border border-blue-200 rounded-lg p-4 mb-6">
+          <p className="text-blue-800 text-sm">
+            Please connect your wallet to view your products.
+          </p>
+        </div>
+      )}
+
+      <ProductFilters
+        filters={filters}
+        onFiltersChange={setFilters}
+        availableCategories={availableCategories}
+        availableOwners={availableOwners}
+        suggestions={suggestions}
+      />
+
+      <ProductList products={products} filters={filters} isLoading={isLoading} />
+    </main>
+  );
+}
diff --git a/frontend/app/(app)/register/page.tsx b/frontend/app/(app)/register/page.tsx
new file mode 100644
index 00000000..428777e8
--- /dev/null
+++ b/frontend/app/(app)/register/page.tsx
@@ -0,0 +1,31 @@
+import dynamic from "next/dynamic";
+import { LoadingSpinner } from "@/components/ui/loading-spinner";
+
+// Code-split: ProductRegistrationForm pulls in react-hook-form + zod + contract
+// clients — not needed on initial paint, so defer it to its own chunk.
+const ProductRegistrationForm = dynamic(
+  () =>
+    import("@/components/forms/ProductRegistrationForm").then((m) => ({
+      default: m.ProductRegistrationForm,
+    })),
+  {
+    loading: () => (
+      <div className="flex items-center justify-center py-24">
+        <LoadingSpinner />
+      </div>
+    ),
+  }
+);
+
+export default function RegisterProductPage() {
+  return (
+    <main className="mx-auto max-w-4xl px-4 py-12">
+      <div className="text-center mb-10">
+        <h1 className="text-3xl font-bold text-zinc-900">Product Registration</h1>
+        <p className="text-zinc-600 mt-2">Registers your product assets on the Stellar blockchain for verified tracking.</p>
+      </div>
+
+      <ProductRegistrationForm />
+    </main>
+  );
+}
diff --git a/frontend/app/(app)/tracking/add/page.tsx b/frontend/app/(app)/tracking/add/page.tsx
new file mode 100644
index 00000000..7a101740
--- /dev/null
+++ b/frontend/app/(app)/tracking/add/page.tsx
@@ -0,0 +1,15 @@
+import React from 'react';
+import EventTrackingForm from '@/components/forms/EventTrackingForm';
+
+export default function AddEventPage() {
+    return (
+        <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 py-10 w-full min-h-screen bg-gray-50">
+            <div className="mb-10 max-w-5xl mx-auto">
+                <h1 className="text-4xl font-extrabold text-gray-900 tracking-tight">Supply Chain Operations</h1>
+                <p className="mt-3 text-lg text-gray-600">Ensure product traceability by logging operations securely on the Stellar network.</p>
+            </div>
+
+            <EventTrackingForm />
+        </div>
+    );
+}
diff --git a/frontend/app/(app)/tracking/page.tsx b/frontend/app/(app)/tracking/page.tsx
new file mode 100644
index 00000000..c6c20659
--- /dev/null
+++ b/frontend/app/(app)/tracking/page.tsx
@@ -0,0 +1,26 @@
+import dynamic from "next/dynamic";
+import { LoadingSpinner } from "@/components/ui/loading-spinner";
+
+// Code-split: EventTrackingForm includes validation + contract dependencies
+const EventTrackingForm = dynamic(
+  () => import("@/components/forms/EventTrackingForm"),
+  {
+    loading: () => (
+      <div className="flex items-center justify-center py-24">
+        <LoadingSpinner />
+      </div>
+    ),
+  }
+);
+
+export default function TrackingPage() {
+  return (
+    <main className="mx-auto max-w-3xl px-6 py-10">
+      <div className="text-center mb-10">
+        <h1 className="text-3xl font-bold text-zinc-900">Event Tracking</h1>
+        <p className="text-zinc-600 mt-2">Record a supply chain event on the Stellar blockchain.</p>
+      </div>
+      <EventTrackingForm />
+    </main>
+  );
+}
diff --git a/frontend/app/(marketing)/page.tsx b/frontend/app/(marketing)/page.tsx
new file mode 100644
index 00000000..7038132a
--- /dev/null
+++ b/frontend/app/(marketing)/page.tsx
@@ -0,0 +1,29 @@
+import {
+  Navigation,
+  Hero,
+  ProblemStats,
+  Features,
+  HowItWorks,
+  UseCases,
+  TrustBlockchain,
+  CTA,
+  Footer,
+} from "@/components/layouts";
+
+export default function MarketingHomePage() {
+  return (
+    <>
+      <Navigation />
+      <main id="main-content">
+        <Hero />
+        <ProblemStats />
+        <Features />
+        <HowItWorks />
+        <UseCases />
+        <TrustBlockchain />
+        <CTA />
+      </main>
+      <Footer />
+    </>
+  );
+}
diff --git a/frontend/app/api/health/route.ts b/frontend/app/api/health/route.ts
new file mode 100644
index 00000000..91feac66
--- /dev/null
+++ b/frontend/app/api/health/route.ts
@@ -0,0 +1,3 @@
+export function GET() {
+  return Response.json({ ok: true });
+}
diff --git a/frontend/app/error.tsx b/frontend/app/error.tsx
new file mode 100644
index 00000000..71619c10
--- /dev/null
+++ b/frontend/app/error.tsx
@@ -0,0 +1,52 @@
+"use client";
+
+import { useEffect } from "react";
+import { trackError } from "@/lib/analytics";
+
+export default function GlobalError({
+  error,
+  reset,
+}: {
+  error: Error & { digest?: string };
+  reset: () => void;
+}) {
+  useEffect(() => {
+    console.error(error);
+    trackError(error, {
+      source: "GlobalError",
+      digest: error.digest,
+    });
+  }, [error]);
+
+  return (
+    <html lang="en">
+      <body className="min-h-screen bg-zinc-50">
+        <div className="mx-auto flex min-h-screen max-w-2xl flex-col items-center justify-center px-6 py-16 text-center">
+          <h1 className="text-2xl font-bold text-zinc-900">Something went wrong</h1>
+          <p className="mt-2 text-sm text-zinc-600">
+            The app hit an unexpected error. Try again, or refresh the page if it persists.
+          </p>
+          {error?.message ? (
+            <p className="mt-4 text-xs text-zinc-500 break-words">{error.message}</p>
+          ) : null}
+          <div className="mt-6 flex items-center justify-center gap-3">
+            <button
+              type="button"
+              onClick={() => reset()}
+              className="rounded-lg bg-zinc-900 px-4 py-2 text-sm font-semibold text-white hover:bg-zinc-800"
+            >
+              Try again
+            </button>
+            <button
+              type="button"
+              onClick={() => window.location.reload()}
+              className="rounded-lg border border-zinc-300 bg-white px-4 py-2 text-sm font-semibold text-zinc-700 hover:bg-zinc-50"
+            >
+              Refresh
+            </button>
+          </div>
+        </div>
+      </body>
+    </html>
+  );
+}
diff --git a/frontend/app/favicon.ico b/frontend/app/favicon.ico
new file mode 100644
index 00000000..718d6fea
Binary files /dev/null and b/frontend/app/favicon.ico differ
diff --git a/frontend/app/globals.css b/frontend/app/globals.css
new file mode 100644
index 00000000..301ce32e
--- /dev/null
+++ b/frontend/app/globals.css
@@ -0,0 +1,177 @@
+@import "tailwindcss";
+
+@plugin "tailwindcss-animate";
+
+@custom-variant dark (&:is(.dark *));
+
+@theme inline {
+  --color-background: var(--background);
+  --color-foreground: var(--foreground);
+  --font-sans: var(--font-geist-sans);
+  --font-mono: var(--font-geist-mono);
+  --color-sidebar-ring: var(--sidebar-ring);
+  --color-sidebar-border: var(--sidebar-border);
+  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
+  --color-sidebar-accent: var(--sidebar-accent);
+  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
+  --color-sidebar-primary: var(--sidebar-primary);
+  --color-sidebar-foreground: var(--sidebar-foreground);
+  --color-sidebar: var(--sidebar);
+  --color-chart-5: var(--chart-5);
+  --color-chart-4: var(--chart-4);
+  --color-chart-3: var(--chart-3);
+  --color-chart-2: var(--chart-2);
+  --color-chart-1: var(--chart-1);
+  --color-ring: var(--ring);
+  --color-input: var(--input);
+  --color-border: var(--border);
+  --color-destructive: var(--destructive);
+  --color-accent-foreground: var(--accent-foreground);
+  --color-accent: var(--accent);
+  --color-muted-foreground: var(--muted-foreground);
+  --color-muted: var(--muted);
+  --color-secondary-foreground: var(--secondary-foreground);
+  --color-secondary: var(--secondary);
+  --color-primary-foreground: var(--primary-foreground);
+  --color-primary: var(--primary);
+  --color-popover-foreground: var(--popover-foreground);
+  --color-popover: var(--popover);
+  --color-card-foreground: var(--card-foreground);
+  --color-card: var(--card);
+  --radius-sm: calc(var(--radius) - 4px);
+  --radius-md: calc(var(--radius) - 2px);
+  --radius-lg: var(--radius);
+  --radius-xl: calc(var(--radius) + 4px);
+  --radius-2xl: calc(var(--radius) + 8px);
+  --radius-3xl: calc(var(--radius) + 12px);
+  --radius-4xl: calc(var(--radius) + 16px);
+}
+
+html {
+  scroll-behavior: smooth;
+}
+
+body {
+  background: #ffffff;
+  color: #1A1A1A;
+  font-family: var(--font-geist-sans), Arial, Helvetica, sans-serif;
+}
+
+/* Smooth scroll animations */
+@media (prefers-reduced-motion: no-preference) {
+  html {
+    scroll-behavior: smooth;
+  }
+}
+
+/* Focus styles for accessibility */
+*:focus-visible {
+  outline: 2px solid #0066FF;
+  outline-offset: 2px;
+}
+
+/* Animation keyframes */
+@keyframes fadeInUp {
+  from {
+    opacity: 0;
+    transform: translateY(20px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+@keyframes fadeIn {
+  from {
+    opacity: 0;
+  }
+  to {
+    opacity: 1;
+  }
+}
+
+/* Scroll offset for fixed navbar */
+section[id] {
+  scroll-margin-top: 5rem; /* 80px to account for navbar height + padding */
+}
+
+/* Respect reduced motion preference */
+@media (prefers-reduced-motion: reduce) {
+  *,
+  *::before,
+  *::after {
+    animation-duration: 0.01ms !important;
+    animation-iteration-count: 1 !important;
+    transition-duration: 0.01ms !important;
+  }
+}
+
+:root {
+  --radius: 0.625rem;
+  --background: oklch(1 0 0);
+  --foreground: oklch(0.145 0 0);
+  --card: oklch(1 0 0);
+  --card-foreground: oklch(0.145 0 0);
+  --popover: oklch(1 0 0);
+  --popover-foreground: oklch(0.145 0 0);
+  --primary: oklch(0.205 0 0);
+  --primary-foreground: oklch(0.985 0 0);
+  --secondary: oklch(0.97 0 0);
+  --secondary-foreground: oklch(0.205 0 0);
+  --muted: oklch(0.97 0 0);
+  --muted-foreground: oklch(0.556 0 0);
+  --accent: oklch(0.97 0 0);
+  --accent-foreground: oklch(0.205 0 0);
+  --destructive: oklch(0.577 0.245 27.325);
+  --border: oklch(0.922 0 0);
+  --input: oklch(0.922 0 0);
+  --ring: oklch(0.708 0 0);
+  --chart-1: oklch(0.646 0.222 41.116);
+  --chart-2: oklch(0.6 0.118 184.704);
+  --chart-3: oklch(0.398 0.07 227.392);
+  --chart-4: oklch(0.828 0.189 84.429);
+  --chart-5: oklch(0.769 0.188 70.08);
+  --sidebar: oklch(0.985 0 0);
+  --sidebar-foreground: oklch(0.145 0 0);
+  --sidebar-primary: oklch(0.205 0 0);
+  --sidebar-primary-foreground: oklch(0.985 0 0);
+  --sidebar-accent: oklch(0.97 0 0);
+  --sidebar-accent-foreground: oklch(0.205 0 0);
+  --sidebar-border: oklch(0.922 0 0);
+  --sidebar-ring: oklch(0.708 0 0);
+}
+
+.dark {
+  --background: oklch(0.145 0 0);
+  --foreground: oklch(0.985 0 0);
+  --card: oklch(0.205 0 0);
+  --card-foreground: oklch(0.985 0 0);
+  --popover: oklch(0.205 0 0);
+  --popover-foreground: oklch(0.985 0 0);
+  --primary: oklch(0.922 0 0);
+  --primary-foreground: oklch(0.205 0 0);
+  --secondary: oklch(0.269 0 0);
+  --secondary-foreground: oklch(0.985 0 0);
+  --muted: oklch(0.269 0 0);
+  --muted-foreground: oklch(0.708 0 0);
+  --accent: oklch(0.269 0 0);
+  --accent-foreground: oklch(0.985 0 0);
+  --destructive: oklch(0.704 0.191 22.216);
+  --border: oklch(1 0 0 / 10%);
+  --input: oklch(1 0 0 / 15%);
+  --ring: oklch(0.556 0 0);
+  --chart-1: oklch(0.488 0.243 264.376);
+  --chart-2: oklch(0.696 0.17 162.48);
+  --chart-3: oklch(0.769 0.188 70.08);
+  --chart-4: oklch(0.627 0.265 303.9);
+  --chart-5: oklch(0.645 0.246 16.439);
+  --sidebar: oklch(0.205 0 0);
+  --sidebar-foreground: oklch(0.985 0 0);
+  --sidebar-primary: oklch(0.488 0.243 264.376);
+  --sidebar-primary-foreground: oklch(0.985 0 0);
+  --sidebar-accent: oklch(0.269 0 0);
+  --sidebar-accent-foreground: oklch(0.985 0 0);
+  --sidebar-border: oklch(1 0 0 / 10%);
+  --sidebar-ring: oklch(0.556 0 0);
+}
diff --git a/frontend/app/layout.tsx b/frontend/app/layout.tsx
new file mode 100644
index 00000000..d5fb35d8
--- /dev/null
+++ b/frontend/app/layout.tsx
@@ -0,0 +1,77 @@
+import type { Metadata } from "next";
+import { Geist, Geist_Mono } from "next/font/google";
+import { AppProviders } from "@/lib/state/providers";
+import { MonitoringBootstrap, PerformanceBudgetAlerts } from "@/components/analytics";
+import { Toaster } from "@/components/ui/sonner";
+import { ToastContainer } from "@/components/ui/ToastContainer";
+import { SkipToContentLink } from "@/components/SkipToContentLink";
+import "./globals.css";
+
+const enablePerformanceToasts = process.env.NODE_ENV !== "production";
+
+const geistSans = Geist({
+  variable: "--font-geist-sans",
+  subsets: ["latin"],
+});
+
+const geistMono = Geist_Mono({
+  variable: "--font-geist-mono",
+  subsets: ["latin"],
+});
+
+export const metadata: Metadata = {
+  title: "ChainLojistic - Transparent Supply Chain Tracking on Blockchain",
+  description:
+    "Track products from origin to consumer with immutable blockchain records. Verify authenticity, combat counterfeits, and build trust through tamper-proof supply chain tracking on Stellar blockchain.",
+  keywords: [
+    "supply chain",
+    "blockchain",
+    "transparency",
+    "traceability",
+    "Stellar",
+    "Soroban",
+    "product tracking",
+    "counterfeit prevention",
+    "verification",
+  ],
+  authors: [{ name: "ChainLojistic" }],
+  openGraph: {
+    title: "ChainLojistic - Transparent Supply Chain Tracking",
+    description:
+      "Track products from origin to consumer with immutable blockchain records.",
+    type: "website",
+  },
+  twitter: {
+    card: "summary_large_image",
+    title: "ChainLojistic - Transparent Supply Chain Tracking",
+    description:
+      "Track products from origin to consumer with immutable blockchain records.",
+  },
+  other: {
+    "Content-Security-Policy":
+      "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval'; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com; font-src 'self' https://fonts.gstatic.com; img-src 'self' data: https:; connect-src 'self' https://horizon-testnet.stellar.org https://soroban-testnet.stellar.org https://nominatim.openstreetmap.org; frame-ancestors 'none'; base-uri 'self'; form-action 'self'",
+  },
+};
+
+export default function RootLayout({
+  children,
+}: Readonly<{
+  children: React.ReactNode;
+}>) {
+  return (
+    <html lang="en">
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
+      >
+        <AppProviders>
+          <SkipToContentLink />
+          <MonitoringBootstrap />
+          {enablePerformanceToasts ? <PerformanceBudgetAlerts /> : null}
+          {children}
+          <Toaster />
+          <ToastContainer />
+        </AppProviders>
+      </body>
+    </html>
+  );
+}
diff --git a/frontend/app/loading.tsx b/frontend/app/loading.tsx
new file mode 100644
index 00000000..55ac71f5
--- /dev/null
+++ b/frontend/app/loading.tsx
@@ -0,0 +1,12 @@
+import { LoadingSpinner } from "@/components/ui/loading-spinner";
+
+export default function Loading() {
+  return (
+    <div className="min-h-screen bg-zinc-50">
+      <div className="mx-auto flex min-h-screen max-w-2xl flex-col items-center justify-center px-6 py-16 text-center">
+        <LoadingSpinner size={28} />
+        <p className="mt-4 text-sm text-zinc-600">Loading…</p>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/app/not-found.tsx b/frontend/app/not-found.tsx
new file mode 100644
index 00000000..26b189b8
--- /dev/null
+++ b/frontend/app/not-found.tsx
@@ -0,0 +1,28 @@
+import Link from "next/link";
+
+export default function NotFound() {
+  return (
+    <div className="min-h-screen bg-zinc-50">
+      <div className="mx-auto flex min-h-screen max-w-2xl flex-col items-center justify-center px-6 py-16 text-center">
+        <h1 className="text-3xl font-bold text-zinc-900">Page not found</h1>
+        <p className="mt-2 text-sm text-zinc-600">
+          The page you’re looking for doesn’t exist or may have been moved.
+        </p>
+        <div className="mt-6 flex items-center justify-center gap-3">
+          <Link
+            href="/"
+            className="rounded-lg bg-zinc-900 px-4 py-2 text-sm font-semibold text-white hover:bg-zinc-800"
+          >
+            Go home
+          </Link>
+          <Link
+            href="/products"
+            className="rounded-lg border border-zinc-300 bg-white px-4 py-2 text-sm font-semibold text-zinc-700 hover:bg-zinc-50"
+          >
+            View products
+          </Link>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/app/page.tsx b/frontend/app/page.tsx
new file mode 100644
index 00000000..8959fc96
--- /dev/null
+++ b/frontend/app/page.tsx
@@ -0,0 +1,29 @@
+import {
+  Navigation,
+  Hero,
+  ProblemStats,
+  Features,
+  HowItWorks,
+  UseCases,
+  TrustBlockchain,
+  CTA,
+  Footer,
+} from "@/components/layouts";
+
+export default function Home() {
+  return (
+    <div className="min-h-screen bg-white">
+      <Navigation />
+      <main className="bg-white">
+        <Hero />
+        <ProblemStats />
+        <Features />
+        <HowItWorks />
+        <UseCases />
+        <TrustBlockchain />
+        <CTA />
+      </main>
+      <Footer />
+    </div>
+  );
+}
diff --git a/frontend/app/toast-demo/page.tsx b/frontend/app/toast-demo/page.tsx
new file mode 100644
index 00000000..4b12ca69
--- /dev/null
+++ b/frontend/app/toast-demo/page.tsx
@@ -0,0 +1,118 @@
+"use client";
+
+import React from 'react';
+import { Button } from '@/components/ui/button';
+import { toast } from '@/lib/toast/store';
+
+export default function ToastDemo() {
+  const showSuccessToast = () => {
+    toast.success('Operation completed successfully!', {
+      title: 'Success',
+      duration: 5000,
+    });
+  };
+
+  const showErrorToast = () => {
+    toast.error('Something went wrong. Please try again.', {
+      title: 'Error',
+      duration: 7000,
+    });
+  };
+
+  const showInfoToast = () => {
+    toast.info('Here is some useful information for you.', {
+      title: 'Information',
+      duration: 4000,
+    });
+  };
+
+  const showWarningToast = () => {
+    toast.warning('Please review this important warning.', {
+      title: 'Warning',
+      duration: 6000,
+    });
+  };
+
+  const showToastWithAction = () => {
+    toast.success('File uploaded successfully!', {
+      title: 'Upload Complete',
+      action: {
+        label: 'View File',
+        onClick: () => {
+          alert('Viewing file...');
+        },
+      },
+      duration: 8000,
+    });
+  };
+
+  const showMultipleToasts = () => {
+    toast.success('First toast');
+    setTimeout(() => toast.info('Second toast'), 500);
+    setTimeout(() => toast.warning('Third toast'), 1000);
+    setTimeout(() => toast.error('Fourth toast'), 1500);
+  };
+
+  const clearAllToasts = () => {
+    toast.clear();
+  };
+
+  return (
+    <div className="min-h-screen bg-gray-50 p-8">
+      <div className="max-w-2xl mx-auto">
+        <h1 className="text-3xl font-bold text-gray-900 mb-8">
+          Toast Notification System Demo
+        </h1>
+        
+        <div className="bg-white rounded-lg shadow-md p-6 mb-6">
+          <h2 className="text-xl font-semibold text-gray-800 mb-4">
+            Basic Toast Types
+          </h2>
+          <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
+            <Button onClick={showSuccessToast} variant="default">
+              Success
+            </Button>
+            <Button onClick={showErrorToast} variant="destructive">
+              Error
+            </Button>
+            <Button onClick={showInfoToast} variant="outline">
+              Info
+            </Button>
+            <Button onClick={showWarningToast} variant="secondary">
+              Warning
+            </Button>
+          </div>
+        </div>
+
+        <div className="bg-white rounded-lg shadow-md p-6 mb-6">
+          <h2 className="text-xl font-semibold text-gray-800 mb-4">
+            Advanced Features
+          </h2>
+          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
+            <Button onClick={showToastWithAction} variant="outline">
+              Toast with Action
+            </Button>
+            <Button onClick={showMultipleToasts} variant="outline">
+              Show Multiple Toasts
+            </Button>
+            <Button onClick={clearAllToasts} variant="outline">
+              Clear All Toasts
+            </Button>
+          </div>
+        </div>
+
+        <div className="bg-blue-50 border border-blue-200 rounded-lg p-4">
+          <h3 className="font-semibold text-blue-900 mb-2">Usage Instructions:</h3>
+          <ul className="text-sm text-blue-800 space-y-1">
+            <li>• Click the buttons above to see different toast types</li>
+            <li>• Toasts auto-dismiss after the specified duration</li>
+            <li>• Hover over toasts to see the dismiss button</li>
+            <li>• Multiple toasts stack automatically</li>
+            <li>• Click the X button to dismiss manually</li>
+            <li>• Toasts are announced to screen readers for accessibility</li>
+          </ul>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/app/verify/[id]/page.tsx b/frontend/app/verify/[id]/page.tsx
new file mode 100644
index 00000000..2321ef8b
--- /dev/null
+++ b/frontend/app/verify/[id]/page.tsx
@@ -0,0 +1,64 @@
+import React from 'react';
+
+// Using async component in app router
+export default async function VerifyPage(props: { params: Promise<{ id: string }> }) {
+    const resolvedParams = await props.params;
+    const productId = resolvedParams.id;
+
+    return (
+        <div className="min-h-screen bg-gradient-to-br from-gray-50 flex items-center justify-center p-4">
+            <div className="max-w-xl w-full bg-white rounded-3xl shadow-xl overflow-hidden p-8 border border-gray-100">
+                <div className="flex flex-col items-center">
+                    <div className="w-20 h-20 bg-emerald-100 text-emerald-600 rounded-full flex items-center justify-center mb-6 ring-8 ring-emerald-50">
+                        <svg className="w-10 h-10" fill="none" stroke="currentColor" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+                            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2.5} d="M5 13l4 4L19 7" />
+                        </svg>
+                    </div>
+                    <h1 className="text-3xl font-bold text-gray-900 mb-2">Verified Authentic</h1>
+                    <p className="text-gray-500 mb-8 text-center text-lg">This product&apos;s origin and journey are permanently recorded on the Stellar blockchain.</p>
+
+                    <div className="w-full space-y-5 bg-gray-50 p-6 rounded-2xl">
+                        <div className="flex justify-between items-center pb-4 border-b border-gray-200">
+                            <span className="text-gray-500 font-medium tracking-wide text-sm uppercase">Product ID</span>
+                            <span className="text-gray-900 font-mono text-sm bg-white px-3 py-1.5 rounded border border-gray-200 shadow-sm break-all text-right max-w-[60%]">
+                                {productId}
+                            </span>
+                        </div>
+                        <div className="flex justify-between items-center pb-2">
+                            <span className="text-gray-500 font-medium tracking-wide text-sm uppercase">Current Status</span>
+                            <span className="px-3 py-1 bg-emerald-100 border border-emerald-200 text-emerald-800 text-sm rounded-full font-semibold">
+                                Ready for Sale
+                            </span>
+                        </div>
+                    </div>
+
+                    <div className="mt-8 pt-8 border-t border-gray-100 w-full">
+                        <h3 className="font-bold text-xl mb-6 text-gray-800 flex items-center gap-2">
+                            <svg className="w-5 h-5 text-gray-400" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 20l-5.447-2.724A1 1 0 013 16.382V5.618a1 1 0 011.447-.894L9 7m0 13l6-3m-6 3V7m6 10l4.553 2.276A1 1 0 0021 18.382V7.618a1 1 0 00-.553-.894L15 4m0 13V4m0 0L9 7" />
+                            </svg>
+                            Supply Chain Journey
+                        </h3>
+
+                        {/* Timeline UI Placeholder */}
+                        <div className="space-y-6 relative before:absolute before:inset-0 before:ml-5 before:-translate-x-px md:before:mx-auto md:before:translate-x-0 before:h-full before:w-0.5 before:bg-gradient-to-b before:from-transparent before:via-gray-200 before:to-transparent">
+                            <div className="relative flex items-center justify-between md:justify-normal md:odd:flex-row-reverse group is-active">
+                                <div className="flex items-center justify-center w-10 h-10 rounded-full border border-white bg-indigo-100 text-indigo-600 shadow shrink-0 md:order-1 md:group-odd:-translate-x-1/2 md:group-even:translate-x-1/2">
+                                    <svg className="w-5 h-5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
+                                        <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 6v6m0 0v6m0-6h6m-6 0H6" />
+                                    </svg>
+                                </div>
+                                <div className="w-[calc(100%-4rem)] md:w-[calc(50%-2.5rem)] p-4 rounded-xl border border-gray-100 bg-white shadow-sm">
+                                    <div className="flex items-center justify-between mb-1">
+                                        <h4 className="font-bold text-gray-900 text-lg">Product Registered</h4>
+                                    </div>
+                                    <p className="text-sm text-gray-500 font-medium">Origin info added to ledger</p>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                </div>
+            </div>
+        </div>
+    );
+}
diff --git a/frontend/components.json b/frontend/components.json
new file mode 100644
index 00000000..7b3464bf
--- /dev/null
+++ b/frontend/components.json
@@ -0,0 +1,23 @@
+{
+  "$schema": "https://ui.shadcn.com/schema.json",
+  "style": "new-york",
+  "rsc": true,
+  "tsx": true,
+  "tailwind": {
+    "config": "tailwind.config.ts",
+    "css": "app/globals.css",
+    "baseColor": "neutral",
+    "cssVariables": true,
+    "prefix": ""
+  },
+  "iconLibrary": "lucide",
+  "rtl": false,
+  "aliases": {
+    "components": "@/components",
+    "utils": "@/lib/utils",
+    "ui": "@/components/ui",
+    "lib": "@/lib",
+    "hooks": "@/hooks"
+  },
+  "registries": {}
+}
diff --git a/frontend/components/ErrorBoundary.tsx b/frontend/components/ErrorBoundary.tsx
new file mode 100644
index 00000000..1e8469f7
--- /dev/null
+++ b/frontend/components/ErrorBoundary.tsx
@@ -0,0 +1,166 @@
+"use client";
+
+import * as React from "react";
+import { trackError } from "@/lib/analytics";
+import { classifyError, type ClassifiedError } from "@/lib/errors";
+import { Button } from "@/components/ui/button";
+import { cn } from "@/lib/utils";
+
+type ErrorBoundaryProps = {
+  children: React.ReactNode;
+  title?: string;
+  description?: string;
+  onReset?: () => void;
+  resetLabel?: string;
+  onError?: (classified: ClassifiedError) => void;
+};
+
+type ErrorBoundaryState = {
+  hasError: boolean;
+  error: Error | null;
+  classified: ClassifiedError | null;
+};
+
+export class ErrorBoundary extends React.Component<ErrorBoundaryProps, ErrorBoundaryState> {
+  state: ErrorBoundaryState = { hasError: false, error: null, classified: null };
+
+  private boundHandleUnhandledRejection: ((event: PromiseRejectionEvent) => void) | null = null;
+  private boundHandleWindowError: ((event: ErrorEvent) => void) | null = null;
+
+  componentDidMount() {
+    this.boundHandleUnhandledRejection = this.handleUnhandledRejection.bind(this);
+    this.boundHandleWindowError = this.handleWindowError.bind(this);
+
+    window.addEventListener("unhandledrejection", this.boundHandleUnhandledRejection);
+    window.addEventListener("error", this.boundHandleWindowError);
+  }
+
+  componentWillUnmount() {
+    if (this.boundHandleUnhandledRejection) {
+      window.removeEventListener("unhandledrejection", this.boundHandleUnhandledRejection);
+    }
+    if (this.boundHandleWindowError) {
+      window.removeEventListener("error", this.boundHandleWindowError);
+    }
+  }
+
+  static getDerivedStateFromError(error: Error): ErrorBoundaryState {
+    const classified = classifyError(error);
+    return { hasError: true, error, classified };
+  }
+
+  componentDidCatch(error: Error) {
+    const classified = classifyError(error);
+    trackError(error, {
+      source: "ErrorBoundary.componentDidCatch",
+      component: this.constructor.name,
+      category: classified.category,
+    });
+    this.props.onError?.(classified);
+  }
+
+  private handleUnhandledRejection(event: PromiseRejectionEvent) {
+    const error = event.reason instanceof Error
+      ? event.reason
+      : new Error(String(event.reason));
+
+    const classified = classifyError(error);
+    trackError(error, {
+      source: "unhandledrejection",
+      category: classified.category,
+    });
+
+    this.setState({ hasError: true, error, classified });
+    this.props.onError?.(classified);
+    event.preventDefault();
+  }
+
+  private handleWindowError(event: ErrorEvent) {
+    const error = event.error instanceof Error
+      ? event.error
+      : new Error(event.message || "An unexpected error occurred.");
+
+    const classified = classifyError(error);
+    trackError(error, {
+      source: "window.error",
+      category: classified.category,
+      filename: event.filename,
+      lineno: event.lineno,
+    });
+
+    this.setState({ hasError: true, error, classified });
+    this.props.onError?.(classified);
+  }
+
+  private handleReset = () => {
+    this.setState({ hasError: false, error: null, classified: null });
+    this.props.onReset?.();
+  };
+
+  render() {
+    if (!this.state.hasError) return this.props.children;
+
+    const classified = this.state.classified;
+    const title = this.props.title ?? classified?.title ?? "Something went wrong";
+    const description =
+      this.props.description ??
+      classified?.message ??
+      "The page had an unexpected problem. You can try again.";
+
+    const categoryStyles: Record<string, string> = {
+      network: "border-yellow-200 bg-yellow-50",
+      contract: "border-orange-200 bg-orange-50",
+      wallet: "border-blue-200 bg-blue-50",
+      validation: "border-amber-200 bg-amber-50",
+      authentication: "border-purple-200 bg-purple-50",
+      business_logic: "border-indigo-200 bg-indigo-50",
+      system: "border-red-200 bg-red-50",
+      user: "border-gray-200 bg-gray-50",
+      unknown: "border-red-200 bg-red-50",
+    };
+
+    const categoryTextStyles: Record<string, string> = {
+      network: "text-yellow-900",
+      contract: "text-orange-900",
+      wallet: "text-blue-900",
+      validation: "text-amber-900",
+      authentication: "text-purple-900",
+      business_logic: "text-indigo-900",
+      system: "text-red-900",
+      user: "text-gray-900",
+      unknown: "text-red-900",
+    };
+
+    const category = classified?.category ?? "unknown";
+
+    return (
+      <div className={cn("rounded-xl border p-6 text-center", categoryStyles[category])}>
+        <p className={cn("text-sm font-semibold", categoryTextStyles[category])}>{title}</p>
+        <p className={cn("mt-1 text-sm", categoryTextStyles[category], "opacity-80")}>
+          {description}
+        </p>
+
+        {classified && classified.recoverySteps.length > 0 && (
+          <ul className={cn("mt-3 space-y-1 text-left text-xs", categoryTextStyles[category], "opacity-70")}>
+            {classified.recoverySteps.map((step, idx) => (
+              <li key={idx} className="flex items-start gap-1.5">
+                <span className="mt-0.5 block h-1 w-1 flex-shrink-0 rounded-full bg-current" />
+                {step}
+              </li>
+            ))}
+          </ul>
+        )}
+
+        <div className="mt-5 flex items-center justify-center gap-2">
+          <Button
+            type="button"
+            onClick={this.handleReset}
+            size="sm"
+          >
+            {this.props.resetLabel ?? "Try again"}
+          </Button>
+        </div>
+      </div>
+    );
+  }
+}
diff --git a/frontend/components/LanguageSelector.tsx b/frontend/components/LanguageSelector.tsx
new file mode 100644
index 00000000..ab8a0ad5
--- /dev/null
+++ b/frontend/components/LanguageSelector.tsx
@@ -0,0 +1,41 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import type { ChangeEvent } from "react";
+import { useTranslation } from "react-i18next";
+import { i18n } from "../lib/i18n"; // Ensure this runs to initialize i18next
+
+export function LanguageSelector() {
+  const { t } = useTranslation();
+  const [mounted, setMounted] = useState(false);
+
+  useEffect(() => {
+    // eslint-disable-next-line react-hooks/set-state-in-effect
+    setMounted(true);
+  }, []);
+
+  const changeLanguage = (lng: string) => {
+    i18n.changeLanguage(lng);
+  };
+
+  
+  if (!mounted) return null;
+
+  return (
+    <label className="inline-flex items-center gap-2">
+      <span className="sr-only">{t("language")}</span>
+      <select
+        value={i18n.resolvedLanguage || i18n.language}
+        onChange={(e: ChangeEvent<HTMLSelectElement>) => changeLanguage(e.target.value)}
+        className="px-3 py-1 bg-zinc-100 hover:bg-zinc-200 text-zinc-800 text-sm font-medium rounded-md transition-colors"
+        aria-label={t("language")}
+        title={t("language")}
+      >
+        <option value="en">EN</option>
+        <option value="es">ES</option>
+        <option value="fr">FR</option>
+        <option value="ar">AR</option>
+      </select>
+    </label>
+  );
+}
diff --git a/frontend/components/ProgressModal.tsx b/frontend/components/ProgressModal.tsx
new file mode 100644
index 00000000..f11c8c26
--- /dev/null
+++ b/frontend/components/ProgressModal.tsx
@@ -0,0 +1,150 @@
+"use client"
+
+import * as React from "react"
+import { Loader2, CheckCircle2, XCircle } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog"
+import { Button } from "@/components/ui/button"
+
+export type ProgressStep = {
+  label: string
+  status: "pending" | "active" | "complete" | "error"
+}
+
+export type ProgressModalProps = {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+  title: string
+  description?: string
+  steps: ProgressStep[]
+  errorMessage?: string
+  onRetry?: () => void
+  onCancel?: () => void
+}
+
+function StepIcon({ status }: { status: ProgressStep["status"] }) {
+  if (status === "complete") {
+    return <CheckCircle2 className="h-4 w-4 text-emerald-600" />
+  }
+  if (status === "error") {
+    return <XCircle className="h-4 w-4 text-destructive" />
+  }
+  if (status === "active") {
+    return <Loader2 className="h-4 w-4 animate-spin text-blue-600" />
+  }
+  return (
+    <div className="h-4 w-4 rounded-full border-2 border-muted-foreground/30" />
+  )
+}
+
+export function ProgressModal({
+  open,
+  onOpenChange,
+  title,
+  description,
+  steps,
+  errorMessage,
+  onRetry,
+  onCancel,
+}: ProgressModalProps) {
+  const hasError = steps.some((s) => s.status === "error")
+  const isComplete = steps.length > 0 && steps.every((s) => s.status === "complete")
+  const isPending = steps.some((s) => s.status === "active")
+  const canClose = !isPending
+
+  const completedCount = steps.filter((s) => s.status === "complete").length
+  const progressPercent =
+    steps.length > 0 ? Math.round((completedCount / steps.length) * 100) : 0
+
+  return (
+    <Dialog open={open} onOpenChange={(next) => (canClose ? onOpenChange(next) : undefined)}>
+      <DialogContent className="sm:max-w-md">
+        <DialogHeader>
+          <DialogTitle>{title}</DialogTitle>
+          {description && <DialogDescription>{description}</DialogDescription>}
+        </DialogHeader>
+
+        <div className="mt-2 space-y-4">
+          <div className="space-y-2">
+            <div className="flex items-center justify-between text-sm">
+              <span className="font-medium">Progress</span>
+              <span className="text-muted-foreground">{progressPercent}%</span>
+            </div>
+            <div className="h-2 w-full overflow-hidden rounded-full bg-muted">
+              <div
+                className={cn(
+                  "h-full rounded-full transition-all duration-500",
+                  hasError
+                    ? "bg-destructive"
+                    : isComplete
+                      ? "bg-emerald-500"
+                      : "bg-blue-600",
+                  isPending && "animate-pulse"
+                )}
+                style={{ width: `${progressPercent}%` }}
+              />
+            </div>
+          </div>
+
+          <div className="space-y-2">
+            {steps.map((step, idx) => (
+              <div key={idx} className="flex items-center gap-3">
+                <StepIcon status={step.status} />
+                <span
+                  className={cn(
+                    "text-sm",
+                    step.status === "pending" && "text-muted-foreground",
+                    step.status === "active" && "font-medium text-foreground",
+                    step.status === "complete" && "text-foreground",
+                    step.status === "error" && "text-destructive"
+                  )}
+                >
+                  {step.label}
+                </span>
+              </div>
+            ))}
+          </div>
+
+          {hasError && errorMessage && (
+            <div className="rounded-lg border border-destructive/30 bg-destructive/10 p-3 text-sm text-destructive">
+              {errorMessage}
+            </div>
+          )}
+
+          {isComplete && (
+            <div className="rounded-lg border border-emerald-500/30 bg-emerald-500/10 p-3 text-sm text-emerald-700">
+              All steps completed successfully.
+            </div>
+          )}
+        </div>
+
+        <DialogFooter className="mt-4">
+          {hasError && onRetry && (
+            <Button onClick={onRetry}>Retry</Button>
+          )}
+          {isPending && onCancel && (
+            <Button variant="secondary" onClick={onCancel}>
+              Cancel
+            </Button>
+          )}
+          {canClose && (
+            <Button
+              variant={isComplete ? "default" : "secondary"}
+              onClick={() => onOpenChange(false)}
+            >
+              {isComplete ? "Done" : "Close"}
+            </Button>
+          )}
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/frontend/components/RetryButton.tsx b/frontend/components/RetryButton.tsx
new file mode 100644
index 00000000..75593128
--- /dev/null
+++ b/frontend/components/RetryButton.tsx
@@ -0,0 +1,89 @@
+"use client"
+
+import * as React from "react"
+import { RefreshCw } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+import { Button, type ButtonProps } from "@/components/ui/button"
+
+export type RetryButtonProps = Omit<ButtonProps, "onClick"> & {
+  onRetry: () => Promise<void> | void
+  maxAttempts?: number
+  baseDelayMs?: number
+  maxDelayMs?: number
+  label?: string
+  retryingLabel?: string
+}
+
+export function RetryButton({
+  onRetry,
+  maxAttempts = 3,
+  baseDelayMs = 1000,
+  maxDelayMs = 10000,
+  label = "Retry",
+  retryingLabel = "Retrying...",
+  className,
+  disabled,
+  ...props
+}: RetryButtonProps) {
+  const [attempt, setAttempt] = React.useState(0)
+  const [retrying, setRetrying] = React.useState(false)
+
+  const exhausted = attempt >= maxAttempts
+
+  const handleClick = React.useCallback(async () => {
+    if (retrying || exhausted) return
+
+    setRetrying(true)
+    const currentAttempt = attempt + 1
+    setAttempt(currentAttempt)
+
+    if (currentAttempt > 1) {
+      const delay = Math.min(
+        baseDelayMs * Math.pow(2, currentAttempt - 2),
+        maxDelayMs
+      )
+      const jitter = delay * 0.1 * Math.random()
+      await new Promise((resolve) => setTimeout(resolve, delay + jitter))
+    }
+
+    try {
+      await onRetry()
+    } finally {
+      setRetrying(false)
+    }
+  }, [onRetry, retrying, exhausted, attempt, baseDelayMs, maxDelayMs])
+
+  const reset = React.useCallback(() => {
+    setAttempt(0)
+    setRetrying(false)
+  }, [])
+
+  React.useEffect(() => {
+    return reset
+  }, [reset])
+
+  const buttonLabel = retrying
+    ? retryingLabel
+    : exhausted
+      ? "No more retries"
+      : attempt > 0
+        ? `${label} (${maxAttempts - attempt} left)`
+        : label
+
+  return (
+    <Button
+      type="button"
+      variant="outline"
+      onClick={handleClick}
+      disabled={disabled || retrying || exhausted}
+      className={cn("gap-2", className)}
+      {...props}
+    >
+      <RefreshCw
+        className={cn("h-4 w-4", retrying && "animate-spin")}
+      />
+      {buttonLabel}
+    </Button>
+  )
+}
diff --git a/frontend/components/SkipToContentLink.tsx b/frontend/components/SkipToContentLink.tsx
new file mode 100644
index 00000000..8b4e1065
--- /dev/null
+++ b/frontend/components/SkipToContentLink.tsx
@@ -0,0 +1,16 @@
+"use client";
+
+import { useTranslation } from "react-i18next";
+
+export function SkipToContentLink() {
+  const { t } = useTranslation();
+
+  return (
+    <a
+      href="#main-content"
+      className="sr-only focus:not-sr-only focus:fixed focus:top-4 focus:left-4 focus:z-[100] focus:rounded-md focus:bg-white focus:px-4 focus:py-2 focus:text-sm focus:font-medium focus:shadow-lg focus:ring-2 focus:ring-blue-500"
+    >
+      {t("skip_to_main")}
+    </a>
+  );
+}
diff --git a/frontend/components/__tests__/accessibility.test.tsx b/frontend/components/__tests__/accessibility.test.tsx
new file mode 100644
index 00000000..5f3df376
--- /dev/null
+++ b/frontend/components/__tests__/accessibility.test.tsx
@@ -0,0 +1,141 @@
+import { render } from "@testing-library/react";
+import userEvent from "@testing-library/user-event";
+import { axe, AxeCore } from "vitest-axe";
+import { describe, it, expect } from "vitest";
+
+import { Input } from "@/components/ui/input";
+import { FormStepIndicator } from "@/components/forms/FormStepIndicator";
+import EventTypeSelector from "@/components/forms/EventTypeSelector";
+
+function expectNoViolations(results: AxeCore.AxeResults) {
+  const violations = results.violations;
+  if (violations.length > 0) {
+    const messages = violations.map(
+      (v: AxeCore.Result) => `${v.id}: ${v.description} (${v.nodes.length} node(s))`
+    );
+    throw new Error(
+      `Expected no accessibility violations but found ${violations.length}:\n${messages.join("\n")}`
+    );
+  }
+}
+
+describe("Accessibility", () => {
+  describe("Input component", () => {
+    it("associates label with input via htmlFor and id", () => {
+      const { getByLabelText } = render(
+        <Input label="Email" placeholder="Enter email" />
+      );
+      const input = getByLabelText("Email");
+      expect(input).toBeInTheDocument();
+      expect(input.tagName).toBe("INPUT");
+    });
+
+    it("links error message via aria-describedby", () => {
+      const { getByLabelText, getByRole } = render(
+        <Input label="Email" error="Required field" />
+      );
+      const input = getByLabelText("Email");
+      expect(input).toHaveAttribute("aria-invalid", "true");
+
+      const alert = getByRole("alert");
+      expect(alert).toHaveTextContent("Required field");
+
+      const describedBy = input.getAttribute("aria-describedby");
+      expect(describedBy).toBeTruthy();
+      expect(document.getElementById(describedBy!)).toBe(alert);
+    });
+
+    it("has no axe violations", async () => {
+      const { container } = render(
+        <Input label="Username" placeholder="Enter username" />
+      );
+      const results = await axe(container);
+      expectNoViolations(results);
+    });
+
+    it("has no axe violations with error state", async () => {
+      const { container } = render(
+        <Input label="Username" error="This field is required" />
+      );
+      const results = await axe(container);
+      expectNoViolations(results);
+    });
+  });
+
+  describe("EventTypeSelector component", () => {
+    it("renders as a radiogroup with radio options", () => {
+      const { getByRole, getAllByRole } = render(
+        <EventTypeSelector value="" onChange={() => {}} />
+      );
+      expect(getByRole("radiogroup")).toBeInTheDocument();
+      const radios = getAllByRole("radio");
+      expect(radios.length).toBeGreaterThan(0);
+    });
+
+    it("marks selected option with aria-checked", () => {
+      const { getAllByRole } = render(
+        <EventTypeSelector value="HARVEST" onChange={() => {}} />
+      );
+      const radios = getAllByRole("radio");
+      const selected = radios.find(
+        (r) => r.getAttribute("aria-checked") === "true"
+      );
+      expect(selected).toBeTruthy();
+    });
+
+    it("supports keyboard activation with Enter and Space", async () => {
+      const user = userEvent.setup();
+      let selectedValue = "";
+      const { getAllByRole } = render(
+        <EventTypeSelector
+          value=""
+          onChange={(val) => { selectedValue = val; }}
+        />
+      );
+      const radios = getAllByRole("radio");
+      radios[0].focus();
+      await user.keyboard("{Enter}");
+      expect(selectedValue).toBe("HARVEST");
+
+      selectedValue = "";
+      radios[1].focus();
+      await user.keyboard(" ");
+      expect(selectedValue).toBe("PROCESS");
+    });
+
+    it("has no axe violations", async () => {
+      const { container } = render(
+        <EventTypeSelector value="HARVEST" onChange={() => {}} />
+      );
+      const results = await axe(container);
+      expectNoViolations(results);
+    });
+  });
+
+  describe("FormStepIndicator component", () => {
+    const steps = [
+      { id: 1, name: "Basic Info" },
+      { id: 2, name: "Details" },
+      { id: 3, name: "Review" },
+    ];
+
+    it("marks current step with aria-current", () => {
+      const { getAllByRole } = render(
+        <FormStepIndicator steps={steps} currentStep={2} />
+      );
+      const items = getAllByRole("listitem");
+      const currentItem = items.find(
+        (item) => item.getAttribute("aria-current") === "step"
+      );
+      expect(currentItem).toBeTruthy();
+    });
+
+    it("has no axe violations", async () => {
+      const { container } = render(
+        <FormStepIndicator steps={steps} currentStep={1} />
+      );
+      const results = await axe(container);
+      expectNoViolations(results);
+    });
+  });
+});
diff --git a/frontend/components/analytics/ActivityFeed.tsx b/frontend/components/analytics/ActivityFeed.tsx
new file mode 100644
index 00000000..20b3a516
--- /dev/null
+++ b/frontend/components/analytics/ActivityFeed.tsx
@@ -0,0 +1,66 @@
+import * as React from "react";
+
+import type { TimelineEvent } from "@/lib/types/tracking";
+import { formatEventTimestamp } from "@/lib/contract/events";
+import { cn } from "@/lib/utils";
+
+export interface ActivityFeedProps {
+  title?: string;
+  events: TimelineEvent[];
+  isLoading?: boolean;
+  className?: string;
+}
+
+export function ActivityFeed({
+  title = "Recent activity",
+  events,
+  isLoading,
+  className,
+}: Readonly<ActivityFeedProps>) {
+  return (
+    <div className={cn("rounded-xl border border-zinc-200 bg-white p-5 shadow-sm", className)}>
+      <div>
+        <h2 className="text-sm font-semibold text-zinc-900">{title}</h2>
+        <p className="mt-1 text-sm text-zinc-500">Latest events across your products.</p>
+      </div>
+
+      <div className="mt-4">
+        {isLoading ? (
+          <div className="space-y-3" aria-hidden="true">
+            {Array.from({ length: 6 }, (_, i) => (
+              <div key={i} className="h-12 rounded-lg bg-zinc-100 animate-pulse" />
+            ))}
+          </div>
+        ) : events.length === 0 ? (
+          <div className="rounded-lg border border-dashed border-zinc-200 bg-zinc-50 p-6 text-sm text-zinc-500">
+            No recent events.
+          </div>
+        ) : (
+          <ul className="divide-y divide-zinc-100">
+            {events.map((e) => (
+              <li key={e.event_id} className="py-3">
+                <div className="flex items-start justify-between gap-3">
+                  <div className="min-w-0">
+                    <p className="text-sm font-semibold text-zinc-900 truncate">
+                      {e.event_type}
+                      <span className="text-zinc-400 font-normal"> · </span>
+                      <span className="text-zinc-600 font-medium">{e.product_id}</span>
+                    </p>
+                    {e.note ? (
+                      <p className="mt-0.5 text-sm text-zinc-600 wrap-break-word">
+                        {e.note}
+                      </p>
+                    ) : null}
+                  </div>
+                  <p className="shrink-0 text-xs text-zinc-500 whitespace-nowrap">
+                    {formatEventTimestamp(e.timestamp)}
+                  </p>
+                </div>
+              </li>
+            ))}
+          </ul>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/analytics/Dashboard.tsx b/frontend/components/analytics/Dashboard.tsx
new file mode 100644
index 00000000..0288c3ee
--- /dev/null
+++ b/frontend/components/analytics/Dashboard.tsx
@@ -0,0 +1,188 @@
+"use client";
+
+import * as React from "react";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { StatCard } from "./StatCard";
+import { EventsChart } from "./EventsChart";
+import { cn } from "@/lib/utils";
+
+export interface DashboardWidget {
+  id: string;
+  type: "stat" | "chart" | "timeline" | "heatmap" | "network";
+  title: string;
+  position: { x: number; y: number };
+  size: { w: number; h: number };
+  data: unknown;
+  config?: Record<string, unknown>;
+}
+
+export interface AnalyticsDashboardProps {
+  className?: string;
+  widgets?: DashboardWidget[];
+  onRefresh?: () => void;
+  isRefreshing?: boolean;
+}
+
+export function AnalyticsDashboard({
+  className,
+  widgets = [],
+  onRefresh,
+  isRefreshing = false,
+}: Readonly<AnalyticsDashboardProps>) {
+  const [isEditMode, setIsEditMode] = React.useState(false);
+
+  const defaultWidgets: DashboardWidget[] = [
+    {
+      id: "total-products",
+      type: "stat",
+      title: "Total Products",
+      position: { x: 0, y: 0 },
+      size: { w: 1, h: 1 },
+      data: { value: 1234, description: "+12% from last month" },
+    },
+    {
+      id: "active-batches",
+      type: "stat",
+      title: "Active Batches",
+      position: { x: 1, y: 0 },
+      size: { w: 1, h: 1 },
+      data: { value: 567, description: "In production" },
+    },
+    {
+      id: "events-chart",
+      type: "chart",
+      title: "Events Distribution",
+      position: { x: 0, y: 1 },
+      size: { w: 2, h: 2 },
+      data: [
+        { type: "production", count: 450 },
+        { type: "shipping", count: 320 },
+        { type: "quality", count: 180 },
+        { type: "recall", count: 15 },
+      ],
+    },
+  ];
+
+  const displayWidgets = widgets.length > 0 ? widgets : defaultWidgets;
+
+  const renderWidget = (widget: DashboardWidget) => {
+    switch (widget.type) {
+      case "stat":
+        return (
+          <StatCard
+            key={widget.id}
+            label={widget.title}
+            value={(widget.data as { value: number; description: string }).value}
+            description={(widget.data as { value: number; description: string }).description}
+          />
+        );
+      case "chart":
+        return (
+          <EventsChart
+            key={widget.id}
+            title={widget.title}
+            data={widget.data as Array<{ type: string; count: number }>}
+            className="col-span-2"
+          />
+        );
+      default:
+        return null;
+    }
+  };
+
+  return (
+    <div className={cn("space-y-6", className)}>
+      {/* Dashboard Header */}
+      <div className="flex items-center justify-between">
+        <div>
+          <h2 className="text-2xl font-semibold text-zinc-900">Analytics Dashboard</h2>
+          <p className="text-sm text-zinc-500">Real-time supply chain analytics</p>
+        </div>
+        <div className="flex items-center gap-2">
+          <button
+            className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs"
+            onClick={() => setIsEditMode(!isEditMode)}
+          >
+            {isEditMode ? "Done" : "Customize"}
+          </button>
+          <button
+            className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs"
+            onClick={onRefresh}
+            disabled={isRefreshing}
+          >
+            ↻ Refresh
+          </button>
+          <button className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs">
+            ↓ Export
+          </button>
+        </div>
+      </div>
+
+      {/* Dashboard Grid */}
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-4 gap-4">
+        {displayWidgets.map((widget) => renderWidget(widget))}
+      </div>
+
+      {/* Additional Analytics Sections */}
+      <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+        <Card>
+          <CardHeader>
+            <CardTitle>Supply Chain Timeline</CardTitle>
+            <CardDescription>Recent events and activities</CardDescription>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-4">
+              {[1, 2, 3, 4].map((i) => (
+                <div key={i} className="flex items-start gap-3">
+                  <div className="w-2 h-2 rounded-full bg-blue-500 mt-2" />
+                  <div className="flex-1">
+                    <p className="text-sm font-medium text-zinc-900">Batch #{1000 + i} shipped</p>
+                    <p className="text-xs text-zinc-500">2 hours ago</p>
+                  </div>
+                </div>
+              ))}
+            </div>
+          </CardContent>
+        </Card>
+
+        <Card>
+          <CardHeader>
+            <CardTitle>Performance Metrics</CardTitle>
+            <CardDescription>KPIs and performance indicators</CardDescription>
+          </CardHeader>
+          <CardContent>
+            <div className="space-y-4">
+              <div>
+                <div className="flex justify-between text-sm mb-1">
+                  <span className="text-zinc-600">On-time Delivery</span>
+                  <span className="font-medium">94%</span>
+                </div>
+                <div className="h-2 bg-zinc-200 rounded-full overflow-hidden">
+                  <div className="h-full bg-green-500 rounded-full" style={{ width: "94%" }} />
+                </div>
+              </div>
+              <div>
+                <div className="flex justify-between text-sm mb-1">
+                  <span className="text-zinc-600">Quality Pass Rate</span>
+                  <span className="font-medium">98%</span>
+                </div>
+                <div className="h-2 bg-zinc-200 rounded-full overflow-hidden">
+                  <div className="h-full bg-blue-500 rounded-full" style={{ width: "98%" }} />
+                </div>
+              </div>
+              <div>
+                <div className="flex justify-between text-sm mb-1">
+                  <span className="text-zinc-600">Inventory Accuracy</span>
+                  <span className="font-medium">99%</span>
+                </div>
+                <div className="h-2 bg-zinc-200 rounded-full overflow-hidden">
+                  <div className="h-full bg-purple-500 rounded-full" style={{ width: "99%" }} />
+                </div>
+              </div>
+            </div>
+          </CardContent>
+        </Card>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/analytics/EventsChart.tsx b/frontend/components/analytics/EventsChart.tsx
new file mode 100644
index 00000000..b8ccbf7d
--- /dev/null
+++ b/frontend/components/analytics/EventsChart.tsx
@@ -0,0 +1,134 @@
+"use client";
+
+import * as React from "react";
+import {
+  Bar,
+  BarChart,
+  Cell,
+  Pie,
+  PieChart,
+  ResponsiveContainer,
+  Tooltip,
+  XAxis,
+  YAxis,
+} from "recharts";
+
+import { cn } from "@/lib/utils";
+
+type EventsByTypeDatum = {
+  type: string;
+  count: number;
+};
+
+const DEFAULT_COLORS = [
+  "#16a34a", // green
+  "#2563eb", // blue
+  "#7c3aed", // purple
+  "#ea580c", // orange
+  "#0891b2", // cyan
+  "#ca8a04", // yellow
+  "#4f46e5", // indigo
+  "#db2777", // pink
+  "#64748b", // slate
+];
+
+export interface EventsChartProps {
+  title?: string;
+  data: EventsByTypeDatum[];
+  className?: string;
+}
+
+export function EventsChart({
+  title = "Events by type",
+  data,
+  className,
+}: Readonly<EventsChartProps>) {
+  const [mode, setMode] = React.useState<"pie" | "bar">("pie");
+
+  const sorted = React.useMemo(() => {
+    return [...data].sort((a, b) => b.count - a.count);
+  }, [data]);
+
+  const empty = sorted.length === 0;
+
+  return (
+    <div className={cn("rounded-xl border border-zinc-200 bg-white p-5 shadow-sm", className)}>
+      <div className="flex items-start justify-between gap-3">
+        <div>
+          <h2 className="text-sm font-semibold text-zinc-900">{title}</h2>
+          <p className="mt-1 text-sm text-zinc-500">Distribution of tracking events.</p>
+        </div>
+        <div className="flex items-center gap-2">
+          <button
+            type="button"
+            onClick={() => setMode("pie")}
+            className={cn(
+              "rounded-lg border px-3 py-1.5 text-xs font-semibold",
+              mode === "pie" ? "bg-zinc-900 text-white border-zinc-900" : "bg-white text-zinc-700 border-zinc-200 hover:bg-zinc-50"
+            )}
+          >
+            Pie
+          </button>
+          <button
+            type="button"
+            onClick={() => setMode("bar")}
+            className={cn(
+              "rounded-lg border px-3 py-1.5 text-xs font-semibold",
+              mode === "bar" ? "bg-zinc-900 text-white border-zinc-900" : "bg-white text-zinc-700 border-zinc-200 hover:bg-zinc-50"
+            )}
+          >
+            Bar
+          </button>
+        </div>
+      </div>
+
+      <div className="mt-4 h-72">
+        {empty ? (
+          <div className="h-full rounded-lg border border-dashed border-zinc-200 bg-zinc-50 flex items-center justify-center text-sm text-zinc-500">
+            No event data yet.
+          </div>
+        ) : mode === "pie" ? (
+          <ResponsiveContainer width="100%" height="100%">
+            <PieChart>
+              <Tooltip
+                formatter={(value: unknown, name: unknown) => [value as number, name as string]}
+              />
+              <Pie
+                data={sorted}
+                dataKey="count"
+                nameKey="type"
+                innerRadius={60}
+                outerRadius={100}
+                paddingAngle={2}
+                isAnimationActive
+              >
+                {sorted.map((entry, idx) => (
+                  <Cell
+                    key={`${entry.type}-${idx}`}
+                    fill={DEFAULT_COLORS[idx % DEFAULT_COLORS.length]}
+                  />
+                ))}
+              </Pie>
+            </PieChart>
+          </ResponsiveContainer>
+        ) : (
+          <ResponsiveContainer width="100%" height="100%">
+            <BarChart data={sorted} margin={{ top: 10, right: 10, left: 0, bottom: 10 }}>
+              <XAxis dataKey="type" tick={{ fontSize: 12 }} />
+              <YAxis allowDecimals={false} tick={{ fontSize: 12 }} />
+              <Tooltip />
+              <Bar dataKey="count" radius={[6, 6, 0, 0]}>
+                {sorted.map((entry, idx) => (
+                  <Cell
+                    key={`${entry.type}-${idx}`}
+                    fill={DEFAULT_COLORS[idx % DEFAULT_COLORS.length]}
+                  />
+                ))}
+              </Bar>
+            </BarChart>
+          </ResponsiveContainer>
+        )}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/analytics/HeatmapView.tsx b/frontend/components/analytics/HeatmapView.tsx
new file mode 100644
index 00000000..04c499f2
--- /dev/null
+++ b/frontend/components/analytics/HeatmapView.tsx
@@ -0,0 +1,159 @@
+"use client";
+
+import * as React from "react";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { cn } from "@/lib/utils";
+
+export interface HeatmapData {
+  x: string;
+  y: string;
+  value: number;
+  label?: string;
+}
+
+export interface HeatmapViewProps {
+  data: HeatmapData[];
+  title?: string;
+  description?: string;
+  colorScale?: "blue" | "green" | "red" | "purple";
+  className?: string;
+  onCellClick?: (data: HeatmapData) => void;
+}
+
+export function HeatmapView({
+  data,
+  title = "Supply Chain Heatmap",
+  description = "Geographic or temporal distribution visualization",
+  colorScale = "blue",
+  className,
+  onCellClick,
+}: Readonly<HeatmapViewProps>) {
+  const [hoveredCell, setHoveredCell] = React.useState<HeatmapData | null>(null);
+
+  const xValues = React.useMemo(() => {
+    return Array.from(new Set(data.map((d) => d.x))).sort();
+  }, [data]);
+
+  const yValues = React.useMemo(() => {
+    return Array.from(new Set(data.map((d) => d.y))).sort();
+  }, [data]);
+
+  const getValueColor = (value: number, min: number, max: number) => {
+    const normalized = (value - min) / (max - min || 1);
+    const colors: Record<string, { start: string; end: string }> = {
+      blue: { start: "#eff6ff", end: "#1e40af" },
+      green: { start: "#f0fdf4", end: "#166534" },
+      red: { start: "#fef2f2", end: "#991b1b" },
+      purple: { start: "#faf5ff", end: "#6b21a8" },
+    };
+    const scale = colors[colorScale];
+    // Simple interpolation
+    const r = Math.round(
+      parseInt(scale.start.slice(1, 3), 16) +
+        (parseInt(scale.end.slice(1, 3), 16) - parseInt(scale.start.slice(1, 3), 16)) * normalized
+    );
+    const g = Math.round(
+      parseInt(scale.start.slice(3, 5), 16) +
+        (parseInt(scale.end.slice(3, 5), 16) - parseInt(scale.start.slice(3, 5), 16)) * normalized
+    );
+    const b = Math.round(
+      parseInt(scale.start.slice(5, 7), 16) +
+        (parseInt(scale.end.slice(5, 7), 16) - parseInt(scale.start.slice(5, 7), 16)) * normalized
+    );
+    return `rgb(${r}, ${g}, ${b})`;
+  };
+
+  const minValue = Math.min(...data.map((d) => d.value));
+  const maxValue = Math.max(...data.map((d) => d.value));
+
+  return (
+    <Card className={cn("", className)}>
+      <CardHeader>
+        <div className="flex items-center justify-between">
+          <div>
+            <CardTitle>{title}</CardTitle>
+            <CardDescription>{description}</CardDescription>
+          </div>
+          <button className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs">
+            ℹ Legend
+          </button>
+        </div>
+      </CardHeader>
+      <CardContent>
+        <div className="relative">
+          {/* Heatmap Grid */}
+          <div className="overflow-x-auto">
+            <div className="inline-block min-w-full">
+              {/* Header Row */}
+              <div className="flex">
+                <div className="w-24 flex-shrink-0" />
+                {xValues.map((x) => (
+                  <div
+                    key={x}
+                    className="w-16 flex-shrink-0 text-xs text-center text-zinc-600 font-medium py-2"
+                  >
+                    {x}
+                  </div>
+                ))}
+              </div>
+              {/* Data Rows */}
+              {yValues.map((y) => (
+                <div key={y} className="flex items-center">
+                  <div className="w-24 flex-shrink-0 text-xs text-zinc-600 font-medium py-2 pr-2 text-right">
+                    {y}
+                  </div>
+                  {xValues.map((x) => {
+                    const cellData = data.find((d) => d.x === x && d.y === y);
+                    return (
+                      <div
+                        key={`${x}-${y}`}
+                        className={cn(
+                          "w-16 h-16 flex-shrink-0 m-0.5 rounded cursor-pointer transition-all hover:scale-110 hover:shadow-lg",
+                          cellData ? "" : "bg-zinc-100"
+                        )}
+                        style={{
+                          backgroundColor: cellData
+                            ? getValueColor(cellData.value, minValue, maxValue)
+                            : undefined,
+                        }}
+                        onClick={() => cellData && onCellClick?.(cellData)}
+                        onMouseEnter={() => setHoveredCell(cellData || null)}
+                        onMouseLeave={() => setHoveredCell(null)}
+                      >
+                        {cellData && (
+                          <div className="flex items-center justify-center h-full text-xs font-medium text-white">
+                            {cellData.value}
+                          </div>
+                        )}
+                      </div>
+                    );
+                  })}
+                </div>
+              ))}
+            </div>
+          </div>
+
+          {/* Tooltip */}
+          {hoveredCell && (
+            <div className="absolute top-0 right-0 bg-white border border-zinc-200 rounded-lg p-3 shadow-lg z-10">
+              <div className="text-sm font-medium text-zinc-900">{hoveredCell.label || hoveredCell.x}</div>
+              <div className="text-xs text-zinc-500 mt-1">
+                {hoveredCell.x} × {hoveredCell.y}
+              </div>
+              <div className="text-lg font-semibold text-zinc-900 mt-2">{hoveredCell.value}</div>
+            </div>
+          )}
+
+          {/* Color Scale Legend */}
+          <div className="mt-4 flex items-center gap-2">
+            <span className="text-xs text-zinc-500">Low</span>
+            <div className="flex-1 h-4 rounded" style={{
+              background: `linear-gradient(to right, ${getValueColor(minValue, minValue, maxValue)}, ${getValueColor(maxValue, minValue, maxValue)})`
+            }} />
+            <span className="text-xs text-zinc-500">High</span>
+          </div>
+        </div>
+      </CardContent>
+    </Card>
+  );
+}
diff --git a/frontend/components/analytics/MonitoringBootstrap.tsx b/frontend/components/analytics/MonitoringBootstrap.tsx
new file mode 100644
index 00000000..89895d08
--- /dev/null
+++ b/frontend/components/analytics/MonitoringBootstrap.tsx
@@ -0,0 +1,25 @@
+"use client";
+
+import { useEffect } from "react";
+import { initMonitoring, startWebVitalsTracking, trackError } from "@/lib/analytics";
+
+export function MonitoringBootstrap() {
+  useEffect(() => {
+    initMonitoring();
+    const connection = (navigator as unknown as { connection?: { saveData?: boolean; effectiveType?: string } })
+      .connection;
+    const saveData = connection?.saveData;
+    const effectiveType = connection?.effectiveType;
+    const slowConnection = effectiveType === "slow-2g" || effectiveType === "2g";
+
+    if (saveData || slowConnection) return;
+
+    startWebVitalsTracking().catch((error) => {
+      trackError(error, {
+        source: "monitoring.startWebVitalsTracking",
+      });
+    });
+  }, []);
+
+  return null;
+}
diff --git a/frontend/components/analytics/PerformanceBudgetAlerts.tsx b/frontend/components/analytics/PerformanceBudgetAlerts.tsx
new file mode 100644
index 00000000..9d9b47ec
--- /dev/null
+++ b/frontend/components/analytics/PerformanceBudgetAlerts.tsx
@@ -0,0 +1,21 @@
+"use client";
+
+import { useEffect } from "react";
+import { subscribeToBudgetAlerts } from "@/lib/analytics";
+import { toast } from "sonner";
+
+export function PerformanceBudgetAlerts() {
+  useEffect(() => {
+    const unsubscribe = subscribeToBudgetAlerts((alert) => {
+      const prefix = alert.severity === "critical" ? "Critical" : "Warning";
+      toast.warning(`${prefix}: ${alert.metric} budget exceeded`, {
+        description: `Observed ${alert.value.toFixed(2)} (warn ${alert.warningThreshold}, critical ${alert.criticalThreshold}).`,
+      });
+    });
+
+    return unsubscribe;
+  }, []);
+
+  return null;
+}
+
diff --git a/frontend/components/analytics/StatCard.tsx b/frontend/components/analytics/StatCard.tsx
new file mode 100644
index 00000000..ec7e8fba
--- /dev/null
+++ b/frontend/components/analytics/StatCard.tsx
@@ -0,0 +1,45 @@
+import * as React from "react";
+
+import { cn } from "@/lib/utils";
+
+export interface StatCardProps {
+  label: string;
+  value: React.ReactNode;
+  description?: string;
+  icon?: React.ReactNode;
+  className?: string;
+}
+
+export function StatCard({
+  label,
+  value,
+  description,
+  icon,
+  className,
+}: Readonly<StatCardProps>) {
+  return (
+    <div
+      className={cn(
+        "rounded-xl border border-zinc-200 bg-white p-5 shadow-sm",
+        className
+      )}
+    >
+      <div className="flex items-start justify-between gap-3">
+        <div className="min-w-0">
+          <p className="text-sm font-medium text-zinc-600">{label}</p>
+          <div className="mt-1 text-2xl font-semibold text-zinc-900">
+            {value}
+          </div>
+          {description ? (
+            <p className="mt-1 text-sm text-zinc-500">{description}</p>
+          ) : null}
+        </div>
+        {icon ? (
+          <div className="shrink-0 text-zinc-400" aria-hidden="true">
+            {icon}
+          </div>
+        ) : null}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/analytics/TimelineView.tsx b/frontend/components/analytics/TimelineView.tsx
new file mode 100644
index 00000000..ca9687dd
--- /dev/null
+++ b/frontend/components/analytics/TimelineView.tsx
@@ -0,0 +1,158 @@
+"use client";
+
+import * as React from "react";
+import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card";
+import { cn } from "@/lib/utils";
+
+export interface TimelineEvent {
+  id: string;
+  timestamp: Date;
+  type: string;
+  title: string;
+  description: string;
+  location?: string;
+  metadata?: Record<string, unknown>;
+}
+
+export interface TimelineViewProps {
+  events: TimelineEvent[];
+  className?: string;
+  onEventClick?: (event: TimelineEvent) => void;
+}
+
+export function TimelineView({
+  events,
+  className,
+  onEventClick,
+}: Readonly<TimelineViewProps>) {
+  const [zoom, setZoom] = React.useState(1);
+  const [selectedType, setSelectedType] = React.useState<string | null>(null);
+
+  const eventTypes = React.useMemo(() => {
+    const types = new Set(events.map((e) => e.type));
+    return Array.from(types);
+  }, [events]);
+
+  const filteredEvents = React.useMemo(() => {
+    if (!selectedType) return events;
+    return events.filter((e) => e.type === selectedType);
+  }, [events, selectedType]);
+
+  const groupedEvents = React.useMemo(() => {
+    const groups = new Map<string, TimelineEvent[]>();
+    filteredEvents.forEach((event) => {
+      const date = event.timestamp.toDateString();
+      if (!groups.has(date)) {
+        groups.set(date, []);
+      }
+      groups.get(date)!.push(event);
+    });
+    return Array.from(groups.entries()).map(([date, events]) => ({
+      date,
+      events: events.sort((a, b) => a.timestamp.getTime() - b.timestamp.getTime()),
+    }));
+  }, [filteredEvents]);
+
+  const getEventColor = (type: string) => {
+    const colors: Record<string, string> = {
+      production: "bg-blue-500",
+      shipping: "bg-green-500",
+      quality: "bg-purple-500",
+      recall: "bg-red-500",
+      inspection: "bg-yellow-500",
+    };
+    return colors[type] || "bg-zinc-500";
+  };
+
+  return (
+    <Card className={cn("", className)}>
+      <CardHeader>
+        <div className="flex items-center justify-between">
+          <div>
+            <CardTitle>Supply Chain Timeline</CardTitle>
+            <CardDescription>Interactive timeline of all supply chain events</CardDescription>
+          </div>
+          <div className="flex items-center gap-2">
+            <button
+              className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs"
+              onClick={() => setZoom(Math.max(0.5, zoom - 0.25))}
+            >
+              +
+            </button>
+            <button
+              className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs"
+              onClick={() => setZoom(Math.min(2, zoom + 0.25))}
+            >
+              -
+            </button>
+            <button
+              className="inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground h-8 rounded-md px-3 text-xs"
+              onClick={() => setSelectedType(null)}
+            >
+              Clear Filter
+            </button>
+          </div>
+        </div>
+        {/* Event Type Filters */}
+        <div className="flex flex-wrap gap-2 mt-4">
+          {eventTypes.map((type) => (
+            <button
+              key={type}
+              className={cn(
+                "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium h-8 rounded-md px-3 text-xs",
+                selectedType === type
+                  ? "bg-primary text-primary-foreground shadow hover:bg-primary/90"
+                  : "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground"
+              )}
+              onClick={() => setSelectedType(selectedType === type ? null : type)}
+            >
+              {type}
+            </button>
+          ))}
+        </div>
+      </CardHeader>
+      <CardContent>
+        <div
+          className="space-y-6 overflow-y-auto"
+          style={{ maxHeight: "600px", transform: `scale(${zoom})` }}
+        >
+          {groupedEvents.map(({ date, events: dayEvents }) => (
+            <div key={date} className="relative">
+              <div className="text-sm font-semibold text-zinc-900 mb-3">{date}</div>
+              <div className="space-y-3 pl-4 border-l-2 border-zinc-200">
+                {dayEvents.map((event) => (
+                  <div
+                    key={event.id}
+                    className="relative cursor-pointer group"
+                    onClick={() => onEventClick?.(event)}
+                  >
+                    <div
+                      className={cn(
+                        "absolute -left-[21px] top-1 w-3 h-3 rounded-full border-2 border-white",
+                        getEventColor(event.type)
+                      )}
+                    />
+                    <div className="bg-zinc-50 rounded-lg p-3 hover:bg-zinc-100 transition-colors">
+                      <div className="flex items-start justify-between">
+                        <div className="flex-1">
+                          <p className="text-sm font-medium text-zinc-900">{event.title}</p>
+                          <p className="text-xs text-zinc-500 mt-1">{event.description}</p>
+                          {event.location && (
+                            <p className="text-xs text-zinc-400 mt-1">📍 {event.location}</p>
+                          )}
+                        </div>
+                        <span className="text-xs text-zinc-400">
+                          {event.timestamp.toLocaleTimeString()}
+                        </span>
+                      </div>
+                    </div>
+                  </div>
+                ))}
+              </div>
+            </div>
+          ))}
+        </div>
+      </CardContent>
+    </Card>
+  );
+}
diff --git a/frontend/components/analytics/index.ts b/frontend/components/analytics/index.ts
new file mode 100644
index 00000000..e9d5fd9b
--- /dev/null
+++ b/frontend/components/analytics/index.ts
@@ -0,0 +1,8 @@
+export { ActivityFeed } from './ActivityFeed';
+export { EventsChart } from './EventsChart';
+export { MonitoringBootstrap } from './MonitoringBootstrap';
+export { PerformanceBudgetAlerts } from './PerformanceBudgetAlerts';
+export { StatCard } from './StatCard';
+export { AnalyticsDashboard } from './Dashboard';
+export { TimelineView } from './TimelineView';
+export { HeatmapView } from './HeatmapView';
diff --git a/frontend/components/blockchain/BlockchainSelector.tsx b/frontend/components/blockchain/BlockchainSelector.tsx
new file mode 100644
index 00000000..761e7041
--- /dev/null
+++ b/frontend/components/blockchain/BlockchainSelector.tsx
@@ -0,0 +1,39 @@
+'use client';
+
+import React, { useState } from 'react';
+import { getSupportedNetworks, getNetworkName } from '@/lib/blockchain/config';
+import { BlockchainNetwork } from '@/lib/blockchain/types';
+import { Button } from '@/components/ui/button';
+
+interface BlockchainSelectorProps {
+  onNetworkChange: (network: BlockchainNetwork) => void;
+  selectedNetwork?: BlockchainNetwork;
+}
+
+export function BlockchainSelector({ onNetworkChange, selectedNetwork }: BlockchainSelectorProps) {
+  const networks = getSupportedNetworks();
+  const [selected, setSelected] = useState<BlockchainNetwork>(selectedNetwork || 'stellar');
+
+  const handleChange = (network: BlockchainNetwork) => {
+    setSelected(network);
+    onNetworkChange(network);
+  };
+
+  return (
+    <div className="flex flex-col gap-4">
+      <label className="text-sm font-medium">Select Blockchain Network</label>
+      <div className="grid grid-cols-2 md:grid-cols-3 gap-2">
+        {networks.map((network) => (
+          <Button
+            key={network}
+            variant={selected === network ? 'default' : 'outline'}
+            onClick={() => handleChange(network)}
+            className="w-full"
+          >
+            {getNetworkName(network)}
+          </Button>
+        ))}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/blockchain/WalletConnector.tsx b/frontend/components/blockchain/WalletConnector.tsx
new file mode 100644
index 00000000..f6fcecc3
--- /dev/null
+++ b/frontend/components/blockchain/WalletConnector.tsx
@@ -0,0 +1,68 @@
+'use client';
+
+import React, { useState } from 'react';
+import { blockchainFactory } from '@/lib/blockchain/factory';
+import { BlockchainNetwork, WalletConnection } from '@/lib/blockchain/types';
+import { Button } from '@/components/ui/button';
+import { toast } from 'sonner';
+
+interface WalletConnectorProps {
+  network: BlockchainNetwork;
+  onConnect: (connection: WalletConnection) => void;
+  onDisconnect: () => void;
+}
+
+export function WalletConnector({ network, onConnect, onDisconnect }: WalletConnectorProps) {
+  const [isConnecting, setIsConnecting] = useState(false);
+  const [connected, setConnected] = useState(false);
+  const [address, setAddress] = useState<string>('');
+
+  const handleConnect = async () => {
+    setIsConnecting(true);
+    try {
+      const provider = blockchainFactory.getProvider(network);
+      const connection = await provider.connect();
+      setConnected(true);
+      setAddress(connection.address);
+      onConnect(connection);
+      toast.success(`Connected to ${network} wallet`);
+    } catch (error) {
+      toast.error(`Failed to connect: ${error}`);
+    } finally {
+      setIsConnecting(false);
+    }
+  };
+
+  const handleDisconnect = async () => {
+    try {
+      const provider = blockchainFactory.getProvider(network);
+      await provider.disconnect();
+      setConnected(false);
+      setAddress('');
+      onDisconnect();
+      toast.success('Wallet disconnected');
+    } catch (error) {
+      toast.error(`Failed to disconnect: ${error}`);
+    }
+  };
+
+  if (connected) {
+    return (
+      <div className="flex items-center gap-4">
+        <div className="text-sm">
+          <p className="text-gray-600">Connected Address:</p>
+          <p className="font-mono text-sm break-all">{address}</p>
+        </div>
+        <Button variant="destructive" onClick={handleDisconnect}>
+          Disconnect
+        </Button>
+      </div>
+    );
+  }
+
+  return (
+    <Button onClick={handleConnect} disabled={isConnecting}>
+      {isConnecting ? 'Connecting...' : 'Connect Wallet'}
+    </Button>
+  );
+}
diff --git a/frontend/components/compliance/ComplianceChecker.tsx b/frontend/components/compliance/ComplianceChecker.tsx
new file mode 100644
index 00000000..ef45269d
--- /dev/null
+++ b/frontend/components/compliance/ComplianceChecker.tsx
@@ -0,0 +1,123 @@
+'use client';
+
+import React, { useState } from 'react';
+import { Button } from '@/components/ui/button';
+import { Card } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { toast } from 'sonner';
+
+interface ComplianceCheckResult {
+  is_compliant: boolean;
+  compliance_type: string;
+  violations: string[];
+  warnings: string[];
+}
+
+export function ComplianceChecker() {
+  const [selectedType, setSelectedType] = useState<string>('gdpr');
+  const [result, setResult] = useState<ComplianceCheckResult | null>(null);
+  const [loading, setLoading] = useState(false);
+
+  const complianceTypes = [
+    { value: 'gdpr', label: 'GDPR' },
+    { value: 'fda_21_cfr_11', label: 'FDA 21 CFR Part 11' },
+    { value: 'fsma', label: 'FSMA' },
+    { value: 'conflict_minerals', label: 'Conflict Minerals' },
+    { value: 'organic_certification', label: 'Organic Certification' },
+  ];
+
+  const handleCheck = async () => {
+    setLoading(true);
+    try {
+      const response = await fetch('/api/v1/compliance/check', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          compliance_type: selectedType,
+          data: {}, // TODO: Get actual product data
+        }),
+      });
+
+      if (!response.ok) throw new Error('Failed to check compliance');
+
+      const data = await response.json();
+      setResult(data);
+
+      if (data.is_compliant) {
+        toast.success('Compliance check passed');
+      } else {
+        toast.error(`${data.violations.length} compliance violations found`);
+      }
+    } catch (error) {
+      toast.error(error instanceof Error ? error.message : 'Unknown error');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <div className="space-y-4">
+      <Card className="p-6">
+        <h2 className="text-2xl font-bold mb-4">Compliance Checker</h2>
+        <div className="space-y-4">
+          <div>
+            <label className="block text-sm font-medium mb-2">Compliance Type</label>
+            <select
+              value={selectedType}
+              onChange={(e) => setSelectedType(e.target.value)}
+              className="w-full border rounded px-3 py-2"
+            >
+              {complianceTypes.map((type) => (
+                <option key={type.value} value={type.value}>
+                  {type.label}
+                </option>
+              ))}
+            </select>
+          </div>
+          <Button onClick={handleCheck} disabled={loading} className="w-full">
+            {loading ? 'Checking...' : 'Check Compliance'}
+          </Button>
+        </div>
+      </Card>
+
+      {result && (
+        <Card className="p-6">
+          <div className="space-y-4">
+            <div className="flex items-center justify-between">
+              <h3 className="text-lg font-semibold">Results</h3>
+              <Badge variant={result.is_compliant ? 'default' : 'destructive'}>
+                {result.is_compliant ? 'Compliant' : 'Non-Compliant'}
+              </Badge>
+            </div>
+
+            {result.violations.length > 0 && (
+              <div>
+                <h4 className="font-medium text-red-600 mb-2">Violations</h4>
+                <ul className="space-y-1">
+                  {result.violations.map((violation, idx) => (
+                    <li key={idx} className="text-sm text-red-600">
+                      • {violation}
+                    </li>
+                  ))}
+                </ul>
+              </div>
+            )}
+
+            {result.warnings.length > 0 && (
+              <div>
+                <h4 className="font-medium text-yellow-600 mb-2">Warnings</h4>
+                <ul className="space-y-1">
+                  {result.warnings.map((warning, idx) => (
+                    <li key={idx} className="text-sm text-yellow-600">
+                      • {warning}
+                    </li>
+                  ))}
+                </ul>
+              </div>
+            )}
+          </div>
+        </Card>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/financial/InvoiceForm.tsx b/frontend/components/financial/InvoiceForm.tsx
new file mode 100644
index 00000000..a2a2767d
--- /dev/null
+++ b/frontend/components/financial/InvoiceForm.tsx
@@ -0,0 +1,94 @@
+'use client';
+
+import React, { useState } from 'react';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import { Card } from '@/components/ui/card';
+import { toast } from 'sonner';
+
+export function InvoiceForm() {
+  const [formData, setFormData] = useState({ amount: '', due_date: '' });
+  const [errors, setErrors] = useState<{ amount?: string; due_date?: string }>({});
+  const [loading, setLoading] = useState(false);
+
+  const validate = (): boolean => {
+    const newErrors: typeof errors = {};
+    const amount = parseFloat(formData.amount);
+    if (!formData.amount || isNaN(amount) || amount <= 0) {
+      newErrors.amount = 'Amount must be a positive number';
+    }
+    if (!formData.due_date) {
+      newErrors.due_date = 'Due date is required';
+    } else if (new Date(formData.due_date) <= new Date()) {
+      newErrors.due_date = 'Due date must be in the future';
+    }
+    setErrors(newErrors);
+    return Object.keys(newErrors).length === 0;
+  };
+
+  const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const { name, value } = e.target;
+    setFormData((prev) => ({ ...prev, [name]: value }));
+    setErrors((prev) => ({ ...prev, [name]: undefined }));
+  };
+
+  const handleSubmit = async (e: React.FormEvent) => {
+    e.preventDefault();
+    if (!validate()) return;
+    setLoading(true);
+    try {
+      const response = await fetch('/api/v1/invoices', {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify(formData),
+      });
+      if (!response.ok) throw new Error('Failed to create invoice');
+      toast.success('Invoice created successfully');
+      setFormData({ amount: '', due_date: '' });
+    } catch (error) {
+      toast.error(error instanceof Error ? error.message : 'Unknown error');
+    } finally {
+      setLoading(false);
+    }
+  };
+
+  return (
+    <Card className="p-6">
+      <h2 className="text-2xl font-bold mb-4">Create Invoice</h2>
+      <form onSubmit={handleSubmit} className="space-y-4">
+        <div>
+          <label className="block text-sm font-medium mb-1">Amount</label>
+          <Input
+            type="number"
+            name="amount"
+            value={formData.amount}
+            onChange={handleChange}
+            placeholder="0.00"
+            step="0.01"
+            min="0.01"
+            required
+            aria-invalid={!!errors.amount}
+            aria-describedby={errors.amount ? 'amount-error' : undefined}
+          />
+          {errors.amount && <p id="amount-error" role="alert" className="text-xs text-red-500 mt-1">{errors.amount}</p>}
+        </div>
+        <div>
+          <label className="block text-sm font-medium mb-1">Due Date</label>
+          <Input
+            type="date"
+            name="due_date"
+            value={formData.due_date}
+            onChange={handleChange}
+            required
+            aria-invalid={!!errors.due_date}
+            aria-describedby={errors.due_date ? 'due-date-error' : undefined}
+          />
+          {errors.due_date && <p id="due-date-error" role="alert" className="text-xs text-red-500 mt-1">{errors.due_date}</p>}
+        </div>
+        <Button type="submit" disabled={loading} className="w-full">
+          {loading ? 'Creating...' : 'Create Invoice'}
+        </Button>
+      </form>
+    </Card>
+  );
+}
diff --git a/frontend/components/financial/TransactionHistory.tsx b/frontend/components/financial/TransactionHistory.tsx
new file mode 100644
index 00000000..215bfb8a
--- /dev/null
+++ b/frontend/components/financial/TransactionHistory.tsx
@@ -0,0 +1,83 @@
+'use client';
+
+import React, { useEffect, useState } from 'react';
+import { Card } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { LoadingSpinner } from '@/components/ui/loading-spinner';
+
+interface Transaction {
+  id: string;
+  transaction_type: string;
+  amount: string;
+  currency: string;
+  status: string;
+  blockchain_network?: string;
+  blockchain_tx_hash?: string;
+  created_at?: string;
+}
+
+export function TransactionHistory() {
+  const [transactions, setTransactions] = useState<Transaction[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [error, setError] = useState<string | null>(null);
+
+  useEffect(() => {
+    const fetchTransactions = async () => {
+      try {
+        const response = await fetch('/api/v1/transactions');
+        if (!response.ok) throw new Error('Failed to fetch transactions');
+        const data = await response.json();
+        setTransactions(data);
+      } catch (err) {
+        setError(err instanceof Error ? err.message : 'Unknown error');
+      } finally {
+        setLoading(false);
+      }
+    };
+
+    fetchTransactions();
+  }, []);
+
+  if (loading) return <LoadingSpinner />;
+  if (error) return <div className="text-red-500">Error: {error}</div>;
+
+  return (
+    <div className="space-y-4">
+      <h2 className="text-2xl font-bold">Transaction History</h2>
+      {transactions.length === 0 ? (
+        <p className="text-gray-500">No transactions yet</p>
+      ) : (
+        <div className="space-y-2">
+          {transactions.map((tx) => (
+            <Card key={tx.id} className="p-4">
+              <div className="flex justify-between items-start">
+                <div>
+                  <p className="font-semibold">{tx.transaction_type}</p>
+                  <p className="text-sm text-gray-600">
+                    {tx.amount} {tx.currency}
+                  </p>
+                  {tx.blockchain_network && (
+                    <p className="text-xs text-gray-500 mt-1">
+                      Network: {tx.blockchain_network}
+                    </p>
+                  )}
+                </div>
+                <Badge
+                  variant={
+                    tx.status === 'completed'
+                      ? 'default'
+                      : tx.status === 'pending'
+                        ? 'secondary'
+                        : 'destructive'
+                  }
+                >
+                  {tx.status}
+                </Badge>
+              </div>
+            </Card>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/forms/EventTrackingForm.tsx b/frontend/components/forms/EventTrackingForm.tsx
new file mode 100644
index 00000000..e2d4e1e5
--- /dev/null
+++ b/frontend/components/forms/EventTrackingForm.tsx
@@ -0,0 +1,204 @@
+"use client";
+
+import React, { useState } from 'react';
+import EventTypeSelector, { EventType } from './EventTypeSelector';
+import { LocationInput } from "./LocationInput";
+import { sanitizeInput, apiRateLimiter, eventTrackingSchema, EVENT_NOTE_MAX_LEN } from "@/lib/validation";
+import { EVENT_TRACKING_SUBMIT_DELAY_MS } from "@/lib/constants";
+
+export default function EventTrackingForm() {
+    const [eventType, setEventType] = useState<EventType | ''>('');
+    const [location, setLocation] = useState('');
+    const [note, setNote] = useState('');
+    const [productId, setProductId] = useState('');
+    const [isSubmitting, setIsSubmitting] = useState(false);
+    const [success, setSuccess] = useState(false);
+    const [error, setError] = useState('');
+
+    // Expected normally fetched from API/Stellar
+    const products = [
+        { id: 'PRD-1001-XYZ', name: 'Premium Arabica Coffee Beans' },
+        { id: 'PRD-2034-ABC', name: 'Organic Cotton T-Shirt' },
+        { id: 'PRD-5099-LMN', name: 'Fair Trade Chocolate' },
+    ];
+
+    const handleSubmit = async (e: React.FormEvent) => {
+        e.preventDefault();
+
+        const result = eventTrackingSchema.safeParse({
+            productId,
+            eventType,
+            location,
+            note: note || undefined,
+            timestamp: Date.now(),
+        });
+
+        if (!result.success) {
+            setError(result.error.issues[0].message);
+            return;
+        }
+
+        if (!apiRateLimiter.check("trackEvent")) {
+            setError('Too many requests. Please wait before trying again.');
+            return;
+        }
+
+        const sanitizedLocation = sanitizeInput(location);
+        const sanitizedNote = sanitizeInput(note);
+
+        if (!sanitizedLocation) {
+            setError('Location is required');
+            return;
+        }
+
+        setIsSubmitting(true);
+        setError('');
+
+        try {
+            setLocation(sanitizedLocation);
+            setNote(sanitizedNote);
+            // Dummy transaction delay mirroring freighter confirm
+            await new Promise((resolve) => setTimeout(resolve, EVENT_TRACKING_SUBMIT_DELAY_MS));
+            setSuccess(true);
+        } catch (err) {
+            setError((err as Error).message || 'Failed to submit transaction');
+        } finally {
+            setIsSubmitting(false);
+        }
+    };
+
+    if (success) {
+        return (
+            <div className="bg-white p-8 md:p-12 rounded-3xl shadow border border-gray-100 max-w-2xl mx-auto text-center">
+                <div className="w-20 h-20 bg-green-100 text-green-600 rounded-full flex items-center justify-center mx-auto mb-6 ring-8 ring-green-50">
+                    <svg className="w-10 h-10" fill="none" stroke="currentColor" viewBox="0 0 24 24" aria-hidden="true"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2.5} d="M5 13l4 4L19 7" /></svg>
+                </div>
+                <h2 className="text-3xl font-bold text-gray-900 mb-2">Event Recorded!</h2>
+                <p className="text-gray-600 text-lg mb-8">The tracking event has been immutably recorded.</p>
+
+                <div className="bg-gray-50 rounded-2xl p-6 text-left mb-8 font-mono text-sm max-w-sm mx-auto space-y-3 border border-gray-200 shadow-inner">
+                    <div className="flex justify-between items-center border-b border-gray-200 pb-2">
+                        <span className="text-gray-500 uppercase text-xs tracking-wider">Product ID</span>
+                        <span className="text-gray-900 font-bold bg-white px-2 py-1 rounded shadow-sm">{productId}</span>
+                    </div>
+                    <div className="flex justify-between items-center pt-1">
+                        <span className="text-gray-500 uppercase text-xs tracking-wider">Event Action</span>
+                        <span className="text-indigo-700 font-bold bg-indigo-50 px-2 py-1 rounded shadow-sm">{eventType}</span>
+                    </div>
+                </div>
+
+                <button
+                    onClick={() => {
+                        setSuccess(false);
+                        setEventType('');
+                        setNote('');
+                        setLocation('');
+                    }}
+                    className="px-8 py-3 bg-indigo-600 text-white font-bold rounded-xl hover:bg-indigo-700 transition shadow-md hover:shadow-lg w-full sm:w-auto"
+                >
+                    Track Another Event
+                </button>
+            </div>
+        );
+    }
+
+    return (
+        <div className="bg-white p-6 md:p-10 rounded-3xl shadow border border-gray-100 w-full max-w-5xl mx-auto">
+            <div className="mb-8 border-b border-gray-100 pb-6">
+                <h2 className="text-2xl font-bold text-gray-900">Log Tracking Event</h2>
+                <p className="text-gray-500 mt-2">Record a new step in the product&apos;s journey. Submit to ledger via wallet signature.</p>
+            </div>
+
+            {error && (
+                <div role="alert" className="mb-8 p-4 bg-red-50 border border-red-200 text-red-700 rounded-xl text-sm flex gap-3 items-center">
+                    <svg className="w-5 h-5 shrink-0" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" /></svg>
+                    {error}
+                </div>
+            )}
+
+            <form onSubmit={handleSubmit} className="space-y-10">
+                <div className="space-y-3">
+                    <label htmlFor="product" className="block text-sm font-semibold text-gray-700 uppercase tracking-wide">1. Select Product *</label>
+                    <select
+                        id="product"
+                        value={productId}
+                        onChange={(e) => setProductId(e.target.value)}
+                        className="w-full rounded-xl border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 bg-gray-50 border p-4 text-base"
+                        required
+                    >
+                        <option value="">-- Choose a product acting on --</option>
+                        {products.map(p => (
+                            <option key={p.id} value={p.id}>{p.name} ({p.id})</option>
+                        ))}
+                    </select>
+                </div>
+
+                <div className="space-y-3">
+                    <div className="flex items-baseline gap-2">
+                        <span className="text-sm font-semibold text-gray-700 uppercase tracking-wide">2. Select Operation</span>
+                    </div>
+                    <EventTypeSelector
+                        value={eventType}
+                        onChange={setEventType}
+                    />
+                </div>
+
+                <div className="grid grid-cols-1 md:grid-cols-2 gap-8">
+                    <div className="space-y-3">
+                        <LocationInput
+                            id="location"
+                            label="3. Location Info"
+                            required
+                            value={location}
+                            onChange={(value) => {
+                                setLocation(value);
+                                setError('');
+                            }}
+                            error={!location && error === 'Please fill in all required fields' ? 'Location is required' : undefined}
+                        />
+                    </div>
+
+                    <div className="space-y-3">
+                        <label htmlFor="note" className="block text-sm font-semibold text-gray-700 uppercase tracking-wide">4. Remarks (Optional)</label>
+                        <input
+                            type="text"
+                            id="note"
+                            value={note}
+                            onChange={(e) => setNote(e.target.value)}
+                            maxLength={EVENT_NOTE_MAX_LEN}
+                            placeholder="e.g. Temperature checked at 4°C"
+                            className="w-full rounded-xl border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 bg-gray-50 border p-4"
+                        />
+                        <p className="text-sm text-gray-500 mt-1">Additional conditions or remarks during operation. ({note.length}/{EVENT_NOTE_MAX_LEN})</p>
+                    </div>
+                </div>
+
+                <div className="pt-8 border-t border-gray-200 mt-10 flex flex-col sm:flex-row items-center justify-end gap-4">
+                    <button
+                        type="button"
+                        className="px-8 py-4 w-full sm:w-auto text-gray-600 font-semibold hover:bg-gray-100 rounded-xl transition"
+                    >
+                        Clear Form
+                    </button>
+                    <button
+                        type="submit"
+                        disabled={isSubmitting || !productId || !eventType || !location}
+                        className="px-8 py-4 w-full sm:w-auto bg-gray-900 border border-transparent text-white font-bold rounded-xl hover:bg-black transition shadow-lg disabled:opacity-50 disabled:cursor-not-allowed flex items-center justify-center gap-3"
+                    >
+                        {isSubmitting ? (
+                            <>
+                                <span className="w-5 h-5 border-2 border-white border-t-transparent rounded-full animate-spin"></span>
+                                Processing Transaction...
+                            </>
+                        ) : (
+                            <>
+                                <svg className="w-5 h-5 text-indigo-300" fill="none" viewBox="0 0 24 24" stroke="currentColor" aria-hidden="true"><path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.04A12.02 12.02 0 003 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622 0-1.042-.133-2.052-.382-3.016z" /></svg>
+                                Sign & Submit Event
+                            </>
+                        )}
+                    </button>
+                </div>
+            </form>
+        </div>
+    );
+}
diff --git a/frontend/components/forms/EventTypeSelector.tsx b/frontend/components/forms/EventTypeSelector.tsx
new file mode 100644
index 00000000..9f226c3d
--- /dev/null
+++ b/frontend/components/forms/EventTypeSelector.tsx
@@ -0,0 +1,76 @@
+import React from 'react';
+
+export type EventType =
+    | 'HARVEST'
+    | 'PROCESS'
+    | 'PACKAGE'
+    | 'SHIP'
+    | 'RECEIVE'
+    | 'QUALITY_CHECK'
+    | 'TRANSFER';
+
+export const EVENT_TYPES: { id: EventType; label: string; description: string; icon: string }[] = [
+    { id: 'HARVEST', label: 'Harvest / Collect', description: 'Product emerged from origin', icon: '🌾' },
+    { id: 'PROCESS', label: 'Process', description: 'Manufacturing or refining', icon: '⚙️' },
+    { id: 'PACKAGE', label: 'Package', description: 'Placed into final packaging', icon: '📦' },
+    { id: 'SHIP', label: 'Ship', description: 'In transit to next destination', icon: '🚚' },
+    { id: 'RECEIVE', label: 'Receive', description: 'Arrived at destination', icon: '🏢' },
+    { id: 'QUALITY_CHECK', label: 'Quality Check', description: 'Passed inspection', icon: '✅' },
+    { id: 'TRANSFER', label: 'Transfer Ownership', description: 'Changed acting owner', icon: '🤝' },
+];
+
+interface EventTypeSelectorProps {
+    value: EventType | '';
+    onChange: (value: EventType) => void;
+    error?: string;
+}
+
+export default function EventTypeSelector({ value, onChange, error }: EventTypeSelectorProps) {
+    const groupId = React.useId();
+    const errorId = error ? `${groupId}-error` : undefined;
+
+    const handleKeyDown = (e: React.KeyboardEvent, typeId: EventType) => {
+        if (e.key === 'Enter' || e.key === ' ') {
+            e.preventDefault();
+            onChange(typeId);
+        }
+    };
+
+    return (
+        <div className="w-full">
+            <div id={groupId} className="block text-sm font-medium text-gray-700 mb-3">Event Type *</div>
+            <div
+                role="radiogroup"
+                aria-labelledby={groupId}
+                aria-describedby={errorId}
+                className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 xl:grid-cols-4 gap-3"
+            >
+                {EVENT_TYPES.map((type) => (
+                    <div
+                        key={type.id}
+                        role="radio"
+                        aria-checked={value === type.id}
+                        tabIndex={0}
+                        onClick={() => onChange(type.id)}
+                        onKeyDown={(e) => handleKeyDown(e, type.id)}
+                        className={`cursor-pointer rounded-xl border p-4 transition-all flex flex-col items-start gap-2 focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:ring-offset-2 ${value === type.id
+                                ? 'border-indigo-600 bg-indigo-50 shadow-sm ring-1 ring-indigo-600'
+                                : 'border-gray-200 bg-white hover:border-gray-300 hover:bg-gray-50 shadow-sm block'
+                            }`}
+                    >
+                        <div className="flex items-center gap-2">
+                            <span className="text-xl" role="img" aria-label={type.label}>{type.icon}</span>
+                            <span className={`font-semibold text-sm ${value === type.id ? 'text-indigo-900' : 'text-gray-900'}`}>
+                                {type.label}
+                            </span>
+                        </div>
+                        <span className={`text-xs block w-full ${value === type.id ? 'text-indigo-700' : 'text-gray-500'}`}>
+                            {type.description}
+                        </span>
+                    </div>
+                ))}
+            </div>
+            {error && <p id={errorId} role="alert" className="mt-2 text-sm text-red-600">{error}</p>}
+        </div>
+    );
+}
diff --git a/frontend/components/forms/FormStepIndicator.tsx b/frontend/components/forms/FormStepIndicator.tsx
new file mode 100644
index 00000000..58233f2a
--- /dev/null
+++ b/frontend/components/forms/FormStepIndicator.tsx
@@ -0,0 +1,60 @@
+"use client";
+
+import { Check } from "lucide-react";
+
+type Step = {
+    id: number;
+    name: string;
+};
+
+interface FormStepIndicatorProps {
+    steps: Step[];
+    currentStep: number;
+}
+
+export function FormStepIndicator({ steps, currentStep }: FormStepIndicatorProps) {
+    return (
+        <nav aria-label="Progress" className="mb-8">
+            <ol role="list" className="flex items-center justify-center space-x-8">
+                {steps.map((step, stepIdx) => (
+                    <li
+                        key={step.name}
+                        className="relative flex items-center"
+                        aria-current={step.id === currentStep ? "step" : undefined}
+                        aria-label={`Step ${step.id}: ${step.name}${step.id < currentStep ? " (completed)" : step.id === currentStep ? " (current)" : ""}`}
+                    >
+                        <div className="flex flex-col items-center">
+                            <div
+                                className={`
+                  flex h-10 w-10 items-center justify-center rounded-full border-2 transition-all
+                  ${step.id < currentStep
+                                        ? "bg-blue-600 border-blue-600"
+                                        : step.id === currentStep
+                                            ? "border-blue-600 bg-white"
+                                            : "border-gray-300 bg-white"}
+                `}
+                            >
+                                {step.id < currentStep ? (
+                                    <Check className="h-6 w-6 text-white" aria-hidden="true" />
+                                ) : (
+                                    <span aria-hidden="true" className={`text-sm font-semibold ${step.id === currentStep ? "text-blue-600" : "text-gray-500"}`}>
+                                        {step.id}
+                                    </span>
+                                )}
+                            </div>
+                            <span aria-hidden="true" className={`mt-2 text-xs font-medium ${step.id <= currentStep ? "text-blue-600" : "text-gray-500"}`}>
+                                {step.name}
+                            </span>
+                        </div>
+                        {stepIdx !== steps.length - 1 && (
+                            <div
+                                className={`ml-4 h-0.5 w-12 bg-gray-200 transition-all ${step.id < currentStep ? "bg-blue-600" : "bg-gray-200"}`}
+                                style={{ position: "absolute", top: "20px", left: "40px" }}
+                            />
+                        )}
+                    </li>
+                ))}
+            </ol>
+        </nav>
+    );
+}
diff --git a/frontend/components/forms/LocationInput.tsx b/frontend/components/forms/LocationInput.tsx
new file mode 100644
index 00000000..fd0771c7
--- /dev/null
+++ b/frontend/components/forms/LocationInput.tsx
@@ -0,0 +1,230 @@
+"use client";
+
+import * as React from "react";
+
+import { cn } from "@/lib/utils";
+
+type ReverseGeocodeResult = {
+  display_name?: string;
+  address?: {
+    road?: string;
+    neighbourhood?: string;
+    suburb?: string;
+    city?: string;
+    town?: string;
+    village?: string;
+    state?: string;
+    country?: string;
+    postcode?: string;
+  };
+};
+
+async function reverseGeocode(lat: number, lon: number, signal?: AbortSignal) {
+  const url = new URL("https://nominatim.openstreetmap.org/reverse");
+  url.searchParams.set("format", "jsonv2");
+  url.searchParams.set("lat", String(lat));
+  url.searchParams.set("lon", String(lon));
+  url.searchParams.set("zoom", "18");
+  url.searchParams.set("addressdetails", "1");
+
+  const res = await fetch(url.toString(), {
+    method: "GET",
+    signal,
+    headers: {
+      Accept: "application/json",
+    },
+  });
+
+  if (!res.ok) {
+    throw new Error("Failed to reverse geocode coordinates");
+  }
+
+  return (await res.json()) as ReverseGeocodeResult;
+}
+
+function formatAddress(result: ReverseGeocodeResult) {
+  if (typeof result.display_name === "string" && result.display_name.trim().length > 0) {
+    return result.display_name;
+  }
+
+  const a = result.address;
+  if (!a) return null;
+
+  const cityLike = a.city ?? a.town ?? a.village;
+  const parts = [a.road, a.suburb ?? a.neighbourhood, cityLike, a.state, a.postcode, a.country].filter(
+    (p): p is string => typeof p === "string" && p.trim().length > 0
+  );
+
+  return parts.length > 0 ? parts.join(", ") : null;
+}
+
+function geolocationErrorMessage(err: GeolocationPositionError) {
+  switch (err.code) {
+    case err.PERMISSION_DENIED:
+      return "Location permission denied. You can type your location manually.";
+    case err.POSITION_UNAVAILABLE:
+      return "Location unavailable. Please type your location manually.";
+    case err.TIMEOUT:
+      return "Location request timed out. Please try again or type your location manually.";
+    default:
+      return "Failed to get current location. Please type your location manually.";
+  }
+}
+
+export interface LocationInputProps {
+  id?: string;
+  label?: string;
+  required?: boolean;
+  value: string;
+  onChange: (value: string) => void;
+  placeholder?: string;
+  className?: string;
+  error?: string;
+  disabled?: boolean;
+}
+
+export function LocationInput({
+  id = "location",
+  label = "Location",
+  required,
+  value,
+  onChange,
+  placeholder = "e.g. Facility A or 12.345, -67.890",
+  className,
+  error,
+  disabled,
+}: Readonly<LocationInputProps>) {
+  const [isLocating, setIsLocating] = React.useState(false);
+  const [gpsError, setGpsError] = React.useState<string | null>(null);
+  const abortRef = React.useRef<AbortController | null>(null);
+
+  React.useEffect(() => {
+    return () => {
+      abortRef.current?.abort();
+    };
+  }, []);
+
+  const handleUseCurrentLocation = async () => {
+    if (disabled) return;
+
+    if (!navigator.geolocation) {
+      setGpsError("Geolocation is not supported by your browser.");
+      return;
+    }
+
+    setIsLocating(true);
+    setGpsError(null);
+
+    abortRef.current?.abort();
+    abortRef.current = new AbortController();
+
+    navigator.geolocation.getCurrentPosition(
+      async (pos) => {
+        try {
+          const { latitude, longitude } = pos.coords;
+          const lat = Number(latitude.toFixed(6));
+          const lon = Number(longitude.toFixed(6));
+
+          try {
+            const result = await reverseGeocode(lat, lon, abortRef.current?.signal);
+            const formatted = formatAddress(result);
+            onChange(formatted ?? `${lat}, ${lon}`);
+          } catch {
+            onChange(`${lat}, ${lon}`);
+          }
+        } catch {
+          setGpsError("Failed to use current location. Please type your location manually.");
+        } finally {
+          setIsLocating(false);
+        }
+      },
+      (err) => {
+        setIsLocating(false);
+        setGpsError(geolocationErrorMessage(err));
+      },
+      {
+        enableHighAccuracy: true,
+        timeout: 15000,
+        maximumAge: 10_000,
+      }
+    );
+  };
+
+  return (
+    <div className={cn("space-y-3", className)}>
+      <label
+        htmlFor={id}
+        className="block text-sm font-semibold text-gray-700 uppercase tracking-wide"
+      >
+        {label}
+        {required ? " *" : ""}
+      </label>
+
+      <div className="flex gap-2">
+        <input
+          type="text"
+          id={id}
+          value={value}
+          onChange={(e) => onChange(e.target.value)}
+          placeholder={placeholder}
+          disabled={disabled}
+          aria-invalid={Boolean(error || gpsError)}
+          aria-describedby={`${id}-help ${id}-error`}
+          className={cn(
+            "flex-1 rounded-xl border-gray-300 shadow-sm focus:border-indigo-500 focus:ring-indigo-500 bg-gray-50 border p-4",
+            disabled && "opacity-50 cursor-not-allowed"
+          )}
+        />
+
+        <button
+          type="button"
+          onClick={handleUseCurrentLocation}
+          disabled={disabled || isLocating}
+          className={cn(
+            "px-5 bg-white text-gray-700 font-medium rounded-xl hover:bg-gray-50 transition border border-gray-300 flex items-center justify-center shadow-sm whitespace-nowrap",
+            (disabled || isLocating) && "opacity-50"
+          )}
+          aria-label="Use current location"
+          title="Use current location"
+        >
+          {isLocating ? (
+            <span className="w-5 h-5 border-2 border-gray-400 border-t-transparent rounded-full animate-spin" />
+          ) : (
+            <span className="flex items-center gap-2">
+              <svg
+                className="w-5 h-5 text-indigo-600"
+                fill="none"
+                viewBox="0 0 24 24"
+                stroke="currentColor"
+              >
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={2}
+                  d="M17.657 16.657L13.414 20.9a1.998 1.998 0 01-2.827 0l-4.244-4.243a8 8 0 1111.314 0z"
+                />
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={2}
+                  d="M15 11a3 3 0 11-6 0 3 3 0 016 0z"
+                />
+              </svg>
+              <span className="hidden sm:inline">Use current location</span>
+            </span>
+          )}
+        </button>
+      </div>
+
+      <p id={`${id}-help`} className="text-sm text-gray-500 mt-1">
+        Provide a facility name/address, or use GPS auto-fill.
+      </p>
+
+      {(error || gpsError) && (
+        <p id={`${id}-error`} className="text-sm text-red-600">
+          {error ?? gpsError}
+        </p>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/forms/ProductRegistrationForm.tsx b/frontend/components/forms/ProductRegistrationForm.tsx
new file mode 100644
index 00000000..270196aa
--- /dev/null
+++ b/frontend/components/forms/ProductRegistrationForm.tsx
@@ -0,0 +1,255 @@
+"use client";
+
+import { useState } from "react";
+import { useForm } from "react-hook-form";
+import { zodResolver } from "@hookform/resolvers/zod";
+import { FormStepIndicator } from "./FormStepIndicator";
+import { useWalletStore } from "@/lib/state/wallet.store";
+import { registerProductOnChain } from "@/lib/contract/product";
+import { Loader2, ArrowRight, ArrowLeft, CheckCircle2 } from "lucide-react";
+
+import {
+    productRegistrationSchema,
+    type ProductRegistrationValues,
+    sanitizeFormData,
+    apiRateLimiter,
+} from "@/lib/validation";
+
+const STEPS = [
+    { id: 1, name: "Basic Info" },
+    { id: 2, name: "Origin Details" },
+    { id: 3, name: "Review" },
+];
+
+export function ProductRegistrationForm() {
+    const [step, setStep] = useState(1);
+    const [isSubmitting, setIsSubmitting] = useState(false);
+    const [txHash, setTxHash] = useState<string | null>(null);
+
+    const { publicKey, status: walletStatus } = useWalletStore();
+
+    const {
+        register,
+        handleSubmit,
+        trigger,
+        getValues,
+        formState: { errors },
+    } = useForm<ProductRegistrationValues>({
+        resolver: zodResolver(productRegistrationSchema),
+        defaultValues: {
+            category: "Electronics",
+        },
+    });
+
+    const nextStep = async () => {
+        let fieldsToValidate: (keyof ProductRegistrationValues)[] = [];
+        if (step === 1) fieldsToValidate = ["id", "name"];
+        if (step === 2) fieldsToValidate = ["origin", "category", "description"];
+
+        const isValid = await trigger(fieldsToValidate);
+        if (isValid) setStep((s) => s + 1);
+    };
+
+    const prevStep = () => setStep((s) => s - 1);
+
+    const onSubmit = async (data: ProductRegistrationValues) => {
+        if (walletStatus !== "connected" || !publicKey) {
+            alert("Please connect your wallet first");
+            return;
+        }
+
+        if (!apiRateLimiter.check("registerProduct")) {
+            alert("Too many requests. Please wait before trying again.");
+            return;
+        }
+
+        const sanitizedData = sanitizeFormData(data);
+
+        setIsSubmitting(true);
+        try {
+            const hash = await registerProductOnChain(publicKey, sanitizedData);
+            setTxHash(hash);
+            setStep(4); // Success step
+        } catch {
+            alert("Failed to register product");
+        } finally {
+            setIsSubmitting(false);
+        }
+    };
+
+    if (step === 4) {
+        return (
+            <div className="text-center py-10 bg-white rounded-xl border p-8 shadow-sm">
+                <div className="mx-auto flex h-16 w-16 items-center justify-center rounded-full bg-green-100 mb-6">
+                    <CheckCircle2 className="h-10 w-10 text-green-600" />
+                </div>
+                <h2 className="text-2xl font-bold text-zinc-900 mb-2">Registration Successful!</h2>
+                <p className="text-zinc-600 mb-6">Your product has been registered on the Stellar blockchain.</p>
+                <div className="bg-zinc-50 rounded-lg p-4 mb-8 text-left border">
+                    <p className="text-xs font-mono text-zinc-500 break-all">Transaction Hash: {txHash}</p>
+                </div>
+                <button
+                    onClick={() => window.location.href = "/dashboard"}
+                    className="bg-blue-600 text-white px-8 py-3 rounded-lg font-semibold hover:bg-blue-700 transition-all"
+                >
+                    View Dashboard
+                </button>
+            </div>
+        );
+    }
+
+    return (
+        <div className="max-w-2xl mx-auto">
+            <FormStepIndicator steps={STEPS} currentStep={step} />
+
+            <form onSubmit={handleSubmit(onSubmit)} className="bg-white rounded-xl border p-8 shadow-sm">
+                {step === 1 && (
+                    <div className="space-y-6 animate-in fade-in slide-in-from-right-4 duration-300">
+                        <h2 className="text-xl font-semibold mb-6">Basic Product Information</h2>
+                        <div>
+                            <label htmlFor="product-id" className="block text-sm font-medium text-zinc-700 mb-1">Product ID</label>
+                            <input
+                                {...register("id")}
+                                id="product-id"
+                                aria-invalid={errors.id ? true : undefined}
+                                aria-describedby={errors.id ? "product-id-error" : undefined}
+                                className="w-full px-4 py-2 rounded-lg border focus:ring-2 focus:ring-blue-500 focus:border-transparent outline-none transition-all"
+                                placeholder="e.g. SKU-12345"
+                            />
+                            {errors.id && <p id="product-id-error" role="alert" className="text-xs text-red-500 mt-1">{errors.id.message}</p>}
+                        </div>
+                        <div>
+                            <label htmlFor="product-name" className="block text-sm font-medium text-zinc-700 mb-1">Product Name</label>
+                            <input
+                                {...register("name")}
+                                id="product-name"
+                                aria-invalid={errors.name ? true : undefined}
+                                aria-describedby={errors.name ? "product-name-error" : undefined}
+                                className="w-full px-4 py-2 rounded-lg border focus:ring-2 focus:ring-blue-500 focus:border-transparent outline-none transition-all"
+                                placeholder="e.g. Premium Coffee Beans"
+                            />
+                            {errors.name && <p id="product-name-error" role="alert" className="text-xs text-red-500 mt-1">{errors.name.message}</p>}
+                        </div>
+                    </div>
+                )}
+
+                {step === 2 && (
+                    <div className="space-y-6 animate-in fade-in slide-in-from-right-4 duration-300">
+                        <h2 className="text-xl font-semibold mb-6">Origin & Category</h2>
+                        <div>
+                            <label htmlFor="product-origin" className="block text-sm font-medium text-zinc-700 mb-1">Origin Location</label>
+                            <input
+                                {...register("origin")}
+                                id="product-origin"
+                                aria-invalid={errors.origin ? true : undefined}
+                                aria-describedby={errors.origin ? "product-origin-error" : undefined}
+                                className="w-full px-4 py-2 rounded-lg border focus:ring-2 focus:ring-blue-500 focus:border-transparent outline-none transition-all"
+                                placeholder="e.g. Ethiopia, Yirgacheffe"
+                            />
+                            {errors.origin && <p id="product-origin-error" role="alert" className="text-xs text-red-500 mt-1">{errors.origin.message}</p>}
+                        </div>
+                        <div>
+                            <label htmlFor="product-category" className="block text-sm font-medium text-zinc-700 mb-1">Category</label>
+                            <select
+                                {...register("category")}
+                                id="product-category"
+                                aria-invalid={errors.category ? true : undefined}
+                                aria-describedby={errors.category ? "product-category-error" : undefined}
+                                className="w-full px-4 py-2 rounded-lg border focus:ring-2 focus:ring-blue-500 focus:border-transparent outline-none transition-all bg-white"
+                            >
+                                <option value="Electronics">Electronics</option>
+                                <option value="Food & Beverage">Food & Beverage</option>
+                                <option value="Apparel">Apparel</option>
+                                <option value="Industrial">Industrial</option>
+                                <option value="Other">Other</option>
+                            </select>
+                            {errors.category && <p id="product-category-error" role="alert" className="text-xs text-red-500 mt-1">{errors.category.message}</p>}
+                        </div>
+                        <div>
+                            <label htmlFor="product-description" className="block text-sm font-medium text-zinc-700 mb-1">Description (Optional)</label>
+                            <textarea
+                                {...register("description")}
+                                id="product-description"
+                                aria-invalid={errors.description ? true : undefined}
+                                aria-describedby={errors.description ? "product-description-error" : undefined}
+                                rows={4}
+                                className="w-full px-4 py-2 rounded-lg border focus:ring-2 focus:ring-blue-500 focus:border-transparent outline-none transition-all"
+                                placeholder="Describe the product details..."
+                            />
+                            {errors.description && <p id="product-description-error" role="alert" className="text-xs text-red-500 mt-1">{errors.description.message}</p>}
+                        </div>
+                    </div>
+                )}
+
+                {step === 3 && (
+                    <div className="space-y-6 animate-in fade-in slide-in-from-right-4 duration-300">
+                        <h2 className="text-xl font-semibold mb-6">Review Registration Info</h2>
+                        <div className="grid grid-cols-2 gap-4 text-sm bg-zinc-50 p-4 rounded-lg">
+                            <span className="text-zinc-500 font-medium">Product ID:</span>
+                            <span className="text-zinc-900 font-semibold">{getValues("id")}</span>
+
+                            <span className="text-zinc-500 font-medium">Name:</span>
+                            <span className="text-zinc-900 font-semibold">{getValues("name")}</span>
+
+                            <span className="text-zinc-500 font-medium">Origin:</span>
+                            <span className="text-zinc-900 font-semibold">{getValues("origin")}</span>
+
+                            <span className="text-zinc-500 font-medium">Category:</span>
+                            <span className="text-zinc-900 font-semibold">{getValues("category")}</span>
+                        </div>
+                        {getValues("description") && (
+                            <div className="bg-zinc-50 p-4 rounded-lg">
+                                <p className="text-sm text-zinc-500 font-medium mb-1">Description:</p>
+                                <p className="text-sm text-zinc-700">{getValues("description")}</p>
+                            </div>
+                        )}
+
+                        {walletStatus !== "connected" && (
+                            <div role="alert" className="bg-orange-50 border border-orange-200 rounded-lg p-4 text-sm text-orange-800">
+                                Please connect your wallet to submit this registration.
+                            </div>
+                        )}
+                    </div>
+                )}
+
+                <div className="mt-10 flex items-center justify-between border-t pt-6">
+                    {step > 1 ? (
+                        <button
+                            type="button"
+                            onClick={prevStep}
+                            className="flex items-center gap-2 text-sm font-medium text-zinc-600 hover:text-zinc-900 transition-colors"
+                        >
+                            <ArrowLeft className="h-4 w-4" /> Back
+                        </button>
+                    ) : (
+                        <div />
+                    )}
+
+                    {step < 3 ? (
+                        <button
+                            type="button"
+                            onClick={nextStep}
+                            className="bg-zinc-900 text-white px-6 py-2 rounded-lg font-semibold hover:bg-zinc-800 transition-all flex items-center gap-2"
+                        >
+                            Next <ArrowRight className="h-4 w-4" />
+                        </button>
+                    ) : (
+                        <button
+                            type="submit"
+                            disabled={isSubmitting || walletStatus !== "connected"}
+                            className="bg-blue-600 text-white px-8 py-2 rounded-lg font-semibold hover:bg-blue-700 disabled:opacity-50 disabled:cursor-not-allowed transition-all flex items-center gap-2"
+                        >
+                            {isSubmitting ? (
+                                <>
+                                    <Loader2 className="h-4 w-4 animate-spin" /> Submitting...
+                                </>
+                            ) : (
+                                "Register Product"
+                            )}
+                        </button>
+                    )}
+                </div>
+            </form>
+        </div>
+    );
+}
diff --git a/frontend/components/forms/index.ts b/frontend/components/forms/index.ts
new file mode 100644
index 00000000..cb0ff5c3
--- /dev/null
+++ b/frontend/components/forms/index.ts
@@ -0,0 +1 @@
+export {};
diff --git a/frontend/components/layouts/AnimatedSection.tsx b/frontend/components/layouts/AnimatedSection.tsx
new file mode 100644
index 00000000..419afc35
--- /dev/null
+++ b/frontend/components/layouts/AnimatedSection.tsx
@@ -0,0 +1,57 @@
+"use client";
+
+import { useEffect, useRef, useState } from "react";
+
+interface AnimatedSectionProps {
+  children: React.ReactNode;
+  delay?: number;
+  className?: string;
+}
+
+export function AnimatedSection({
+  children,
+  delay = 0,
+  className = "",
+}: AnimatedSectionProps) {
+  const [isVisible, setIsVisible] = useState(false);
+  const ref = useRef<HTMLDivElement>(null);
+
+  useEffect(() => {
+    const currentRef = ref.current;
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (entry.isIntersecting) {
+          setTimeout(() => {
+            setIsVisible(true);
+          }, delay);
+        }
+      },
+      {
+        threshold: 0.1,
+        rootMargin: "0px 0px -50px 0px",
+      }
+    );
+
+    if (currentRef) {
+      observer.observe(currentRef);
+    }
+
+    return () => {
+      if (currentRef) {
+        observer.unobserve(currentRef);
+      }
+    };
+  }, [delay]);
+
+  return (
+    <div
+      ref={ref}
+      className={`transition-all duration-700 ease-out ${isVisible
+          ? "opacity-100 translate-y-0"
+          : "opacity-0 translate-y-8"
+        } ${className}`}
+    >
+      {children}
+    </div>
+  );
+}
diff --git a/frontend/components/layouts/CTA.tsx b/frontend/components/layouts/CTA.tsx
new file mode 100644
index 00000000..892244a6
--- /dev/null
+++ b/frontend/components/layouts/CTA.tsx
@@ -0,0 +1,38 @@
+"use client";
+
+import Link from "next/link";
+import { AnimatedSection } from "./AnimatedSection";
+
+export function CTA() {
+  return (
+    <section className="bg-white py-24 sm:py-28">
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <AnimatedSection>
+          <div className="mx-auto max-w-4xl overflow-hidden rounded-2xl bg-gradient-to-r from-[#0066FF] via-[#0052CC] to-[#00D4AA] px-8 py-20 text-center shadow-2xl shadow-blue-500/20 hover:shadow-3xl transition-shadow duration-500">
+          <h2 className="text-3xl font-bold tracking-tight text-white sm:text-4xl">
+            Ready to bring transparency to your supply chain?
+          </h2>
+          <p className="mx-auto mt-6 max-w-xl text-lg leading-8 text-white/90">
+            Join producers, manufacturers, and consumers who trust ChainLojistic
+            for complete supply chain visibility.
+          </p>
+          <div className="mt-10 flex items-center justify-center gap-4">
+            <Link
+              href="/register"
+              className="rounded-lg bg-white px-6 py-3 text-base font-semibold text-[#0066FF] shadow-lg hover:bg-gray-50 transition-all duration-200 hover:scale-105"
+            >
+              Get Started Free
+            </Link>
+            <Link
+              href="#how-it-works"
+              className="rounded-lg border-2 border-white px-6 py-3 text-base font-semibold text-white hover:bg-white/10 transition-all duration-200"
+            >
+              View Demo
+            </Link>
+          </div>
+          </div>
+        </AnimatedSection>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/Features.tsx b/frontend/components/layouts/Features.tsx
new file mode 100644
index 00000000..756ec133
--- /dev/null
+++ b/frontend/components/layouts/Features.tsx
@@ -0,0 +1,159 @@
+"use client";
+
+import { AnimatedSection } from "./AnimatedSection";
+
+export function Features() {
+  const features = [
+    {
+      name: "Immutable Records",
+      description:
+        "Every product event is recorded on the blockchain. Once written, it cannot be altered or deleted, ensuring complete transparency.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.04A12.02 12.02 0 003 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622 0-1.042-.133-2.052-.382-3.016z"
+          />
+        </svg>
+      ),
+    },
+    {
+      name: "Multi-Party Verification",
+      description:
+        "Farmers, processors, shippers, and retailers all contribute to the product journey. Each step is verified and authorized.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z"
+          />
+        </svg>
+      ),
+    },
+    {
+      name: "QR Code Verification",
+      description:
+        "Consumers can instantly verify product authenticity by scanning a QR code. See the complete journey from origin to shelf.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M12 4v1m6 11h2m-6 0h-2v4m0-11v3m0 0h.01M12 12h4.01M16 20h4M4 12h4m12 0h.01M5 8h2a1 1 0 001-1V5a1 1 0 00-1-1H5a1 1 0 00-1 1v2a1 1 0 001 1zm12 0h2a1 1 0 001-1V5a1 1 0 00-1-1h-2a1 1 0 00-1 1v2a1 1 0 001 1zM5 20h2a1 1 0 001-1v-2a1 1 0 00-1-1H5a1 1 0 00-1 1v2a1 1 0 001 1z"
+          />
+        </svg>
+      ),
+    },
+    {
+      name: "Real-Time Visibility",
+      description:
+        "Track products in real-time as they move through the supply chain. Get instant updates on location, status, and quality checks.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M13 10V3L4 14h7v7l9-11h-7z"
+          />
+        </svg>
+      ),
+    },
+    {
+      name: "Fraud Prevention",
+      description:
+        "Blockchain technology makes it nearly impossible to forge documents or create fake product records. Protect your brand and customers.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M12 15v2m-6 4h12a2 2 0 002-2v-6a2 2 0 00-2-2H6a2 2 0 00-2 2v6a2 2 0 002 2zm10-10V7a4 4 0 00-8 0v4h8z"
+          />
+        </svg>
+      ),
+    },
+    {
+      name: "Certificate Verification",
+      description:
+        "Verify organic, fair-trade, and sustainability certifications with cryptographic proof. No more false claims or greenwashing.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 12l2 2 4-4M7.835 4.697a3.42 3.42 0 001.946-.806 3.42 3.42 0 014.438 0 3.42 3.42 0 001.946.806 3.42 3.42 0 013.138 3.138 3.42 3.42 0 00.806 1.946 3.42 3.42 0 010 4.438 3.42 3.42 0 00-.806 1.946 3.42 3.42 0 01-3.138 3.138 3.42 3.42 0 00-1.946.806 3.42 3.42 0 01-4.438 0 3.42 3.42 0 00-1.946-.806 3.42 3.42 0 01-3.138-3.138 3.42 3.42 0 00-.806-1.946 3.42 3.42 0 010-4.438 3.42 3.42 0 00.806-1.946 3.42 3.42 0 013.138-3.138z"
+          />
+        </svg>
+      ),
+    },
+  ];
+
+  return (
+    <section id="features" className="bg-white py-24 sm:py-28">
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <AnimatedSection>
+          <div className="mx-auto max-w-2xl text-center">
+            <h2 className="text-3xl font-bold tracking-tight text-gray-900 sm:text-4xl">
+              Everything you need for transparent supply chains
+            </h2>
+            <p className="mt-4 text-lg leading-7 text-gray-600">
+              Built on blockchain technology to ensure trust, transparency, and
+              authenticity at every step.
+            </p>
+          </div>
+        </AnimatedSection>
+        <div className="mx-auto mt-16 grid max-w-7xl grid-cols-1 gap-8 sm:grid-cols-2 lg:grid-cols-3">
+          {features.map((feature, index) => (
+            <AnimatedSection key={index} delay={index * 50}>
+              <div className="flex flex-col rounded-lg border border-gray-200 bg-white p-6 shadow-sm hover:shadow-md transition-all duration-300 hover:border-[#0066FF] hover:-translate-y-2 hover:scale-[1.02]">
+              <div className="mb-4">{feature.icon}</div>
+              <h3 className="text-lg font-semibold text-[#1A1A1A]">
+                {feature.name}
+              </h3>
+                <p className="mt-2 text-sm text-gray-600">{feature.description}</p>
+              </div>
+            </AnimatedSection>
+          ))}
+        </div>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/Footer.tsx b/frontend/components/layouts/Footer.tsx
new file mode 100644
index 00000000..5e9bce00
--- /dev/null
+++ b/frontend/components/layouts/Footer.tsx
@@ -0,0 +1,176 @@
+import Link from "next/link";
+
+export function Footer() {
+  const navigation = {
+    product: [
+      { name: "Features", href: "#features" },
+      { name: "How It Works", href: "#how-it-works" },
+      { name: "Use Cases", href: "#use-cases" },
+      { name: "Pricing", href: "#" },
+    ],
+    company: [
+      { name: "About", href: "#" },
+      { name: "Blog", href: "#" },
+      { name: "Careers", href: "#" },
+      { name: "Contact", href: "#" },
+    ],
+    legal: [
+      { name: "Privacy Policy", href: "#" },
+      { name: "Terms of Service", href: "#" },
+      { name: "Cookie Policy", href: "#" },
+    ],
+    resources: [
+      { name: "Documentation", href: "#" },
+      { name: "API Reference", href: "#" },
+      { name: "GitHub", href: "https://github.com/ChainLojistics/ChainLogistics" },
+      { name: "Discord", href: "#" },
+    ],
+  };
+
+  const socialLinks = [
+    {
+      name: "GitHub",
+      href: "https://github.com/ChainLojistics/ChainLogistics",
+      icon: (
+        <svg className="h-5 w-5" fill="currentColor" viewBox="0 0 24 24">
+          <path
+            fillRule="evenodd"
+            d="M12 2C6.477 2 2 6.477 2 12c0 4.42 2.865 8.17 6.839 9.49.5.092.682-.217.682-.482 0-.237-.008-.866-.013-1.7-2.782.603-3.369-1.34-3.369-1.34-.454-1.156-1.11-1.463-1.11-1.463-.908-.62.069-.608.069-.608 1.003.07 1.531 1.03 1.531 1.03.892 1.529 2.341 1.088 2.91.832.092-.647.35-1.088.636-1.338-2.22-.253-4.555-1.11-4.555-4.943 0-1.091.39-1.984 1.029-2.683-.103-.253-.446-1.27.098-2.647 0 0 .84-.269 2.75 1.025A9.578 9.578 0 0112 6.836c.85.004 1.705.114 2.504.336 1.909-1.294 2.747-1.025 2.747-1.025.546 1.377.203 2.394.1 2.647.64.699 1.028 1.592 1.028 2.683 0 3.842-2.339 4.687-4.566 4.935.359.309.678.919.678 1.852 0 1.336-.012 2.415-.012 2.743 0 .267.18.578.688.48C19.138 20.167 22 16.418 22 12c0-5.523-4.477-10-10-10z"
+            clipRule="evenodd"
+          />
+        </svg>
+      ),
+    },
+    {
+      name: "Twitter",
+      href: "#",
+      icon: (
+        <svg className="h-5 w-5" fill="currentColor" viewBox="0 0 24 24">
+          <path d="M8.29 20.251c7.547 0 11.675-6.253 11.675-11.675 0-.178 0-.355-.012-.53A8.348 8.348 0 0022 5.92a8.19 8.19 0 01-2.357.646 4.118 4.118 0 001.804-2.27 8.224 8.224 0 01-2.605.996 4.107 4.107 0 00-6.993 3.743 11.65 11.65 0 01-8.457-4.287 4.106 4.106 0 001.27 5.477A4.072 4.072 0 012.8 9.713v.052a4.105 4.105 0 003.292 4.022 4.095 4.095 0 01-1.853.07 4.108 4.108 0 003.834 2.85A8.233 8.233 0 012 18.407a11.616 11.616 0 006.29 1.84" />
+        </svg>
+      ),
+    },
+    {
+      name: "Discord",
+      href: "#",
+      icon: (
+        <svg className="h-5 w-5" fill="currentColor" viewBox="0 0 24 24">
+          <path d="M20.317 4.37a19.791 19.791 0 00-4.885-1.515.074.074 0 00-.079.037c-.21.375-.444.864-.608 1.25a18.27 18.27 0 00-5.487 0 12.64 12.64 0 00-.617-1.25.077.077 0 00-.079-.037A19.736 19.736 0 003.677 4.37a.07.07 0 00-.032.027C.533 9.046-.32 13.58.099 18.057a.082.082 0 00.031.057 19.9 19.9 0 005.993 3.03.078.078 0 00.084-.028c.462-.63.874-1.295 1.226-1.994a.076.076 0 00-.041-.106 13.107 13.107 0 01-1.872-.892.077.077 0 01-.008-.128 10.2 10.2 0 00.372-.292.074.074 0 01.077-.01c3.928 1.793 8.18 1.793 12.062 0a.074.074 0 01.078.01c.12.098.246.198.373.292a.077.077 0 01-.006.127 12.299 12.299 0 01-1.873.892.077.077 0 00-.041.107c.36.698.772 1.362 1.225 1.993a.076.076 0 00.084.028 19.839 19.839 0 006.002-3.03.077.077 0 00.032-.054c.5-5.177-.838-9.674-3.549-13.66a.061.061 0 00-.031-.03zM8.02 15.33c-1.183 0-2.157-1.085-2.157-2.419 0-1.333.956-2.419 2.157-2.419 1.21 0 2.176 1.096 2.157 2.42 0 1.333-.956 2.418-2.157 2.418zm7.975 0c-1.183 0-2.157-1.085-2.157-2.419 0-1.333.955-2.419 2.157-2.419 1.21 0 2.176 1.096 2.157 2.42 0 1.333-.946 2.418-2.157 2.418z" />
+        </svg>
+      ),
+    },
+  ];
+
+  return (
+    <footer className="bg-[#1A1A1A]">
+      <div className="mx-auto max-w-7xl px-6 py-12 lg:px-8 lg:py-16">
+        <div className="xl:grid xl:grid-cols-3 xl:gap-8">
+          <div className="space-y-8">
+            <div className="text-2xl font-bold text-white">ChainLojistic</div>
+            <p className="text-sm leading-6 text-gray-400">
+              Making supply chains transparent, trustworthy, and traceable for
+              everyone.
+            </p>
+            <div className="flex space-x-6">
+              {socialLinks.map((item) => (
+                <Link
+                  key={item.name}
+                  href={item.href}
+                  target="_blank"
+                  rel="noopener noreferrer"
+                  className="text-gray-400 hover:text-gray-300 transition-colors"
+                  aria-label={item.name}
+                >
+                  {item.icon}
+                </Link>
+              ))}
+            </div>
+          </div>
+          <div className="mt-16 grid grid-cols-2 gap-8 xl:col-span-2 xl:mt-0">
+            <div className="md:grid md:grid-cols-2 md:gap-8">
+              <div>
+                <h3 className="text-sm font-semibold leading-6 text-white">
+                  Product
+                </h3>
+                <ul role="list" className="mt-6 space-y-4">
+                  {navigation.product.map((item) => (
+                    <li key={item.name}>
+                      <Link
+                        href={item.href}
+                        className="text-sm leading-6 text-gray-400 hover:text-white transition-colors"
+                      >
+                        {item.name}
+                      </Link>
+                    </li>
+                  ))}
+                </ul>
+              </div>
+              <div className="mt-10 md:mt-0">
+                <h3 className="text-sm font-semibold leading-6 text-white">
+                  Company
+                </h3>
+                <ul role="list" className="mt-6 space-y-4">
+                  {navigation.company.map((item) => (
+                    <li key={item.name}>
+                      <Link
+                        href={item.href}
+                        className="text-sm leading-6 text-gray-400 hover:text-white transition-colors"
+                      >
+                        {item.name}
+                      </Link>
+                    </li>
+                  ))}
+                </ul>
+              </div>
+            </div>
+            <div className="md:grid md:grid-cols-2 md:gap-8">
+              <div>
+                <h3 className="text-sm font-semibold leading-6 text-white">
+                  Resources
+                </h3>
+                <ul role="list" className="mt-6 space-y-4">
+                  {navigation.resources.map((item) => (
+                    <li key={item.name}>
+                      <Link
+                        href={item.href}
+                        target={item.href.startsWith("http") ? "_blank" : undefined}
+                        rel={item.href.startsWith("http") ? "noopener noreferrer" : undefined}
+                        className="text-sm leading-6 text-gray-400 hover:text-white transition-colors"
+                      >
+                        {item.name}
+                      </Link>
+                    </li>
+                  ))}
+                </ul>
+              </div>
+              <div className="mt-10 md:mt-0">
+                <h3 className="text-sm font-semibold leading-6 text-white">
+                  Legal
+                </h3>
+                <ul role="list" className="mt-6 space-y-4">
+                  {navigation.legal.map((item) => (
+                    <li key={item.name}>
+                      <Link
+                        href={item.href}
+                        className="text-sm leading-6 text-gray-400 hover:text-white transition-colors"
+                      >
+                        {item.name}
+                      </Link>
+                    </li>
+                  ))}
+                </ul>
+              </div>
+            </div>
+          </div>
+        </div>
+        <div className="mt-16 border-t border-gray-800 pt-8 sm:mt-20 lg:mt-24">
+          <p className="text-xs leading-5 text-gray-400">
+            &copy; {new Date().getFullYear()} ChainLojistic. All rights reserved.
+            Built with ❤️ by the ChainLojistic community. Powered by Stellar &
+            Soroban.
+          </p>
+        </div>
+      </div>
+    </footer>
+  );
+}
diff --git a/frontend/components/layouts/Hero.tsx b/frontend/components/layouts/Hero.tsx
new file mode 100644
index 00000000..033f7992
--- /dev/null
+++ b/frontend/components/layouts/Hero.tsx
@@ -0,0 +1,96 @@
+"use client";
+/* eslint-disable react-hooks/set-state-in-effect */
+import Link from "next/link";
+import { useEffect, useState } from "react";
+
+export function Hero() {
+  const [mounted, setMounted] = useState(false);
+
+  useEffect(() => {
+     
+    setMounted(true);
+  }, []);
+  return (
+    <section className="relative bg-gradient-to-b from-white to-gray-50 pt-32 pb-24 sm:pt-40 sm:pb-32 lg:pt-48 lg:pb-40">
+      <div className="relative mx-auto max-w-7xl px-6 lg:px-8">
+        <div
+          className={`mx-auto max-w-4xl text-center transition-all duration-1000 ease-out ${mounted
+            ? "opacity-100 translate-y-0"
+            : "opacity-0 translate-y-10"
+            }`}
+        >
+          <div className="mb-6 inline-flex items-center rounded-full border border-blue-100 bg-blue-50 px-4 py-1.5 text-sm font-medium text-[#0066FF]">
+            <svg
+              className="mr-2 h-4 w-4"
+              fill="currentColor"
+              viewBox="0 0 20 20"
+              aria-hidden="true"
+            >
+              <path
+                fillRule="evenodd"
+                d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z"
+                clipRule="evenodd"
+              />
+            </svg>
+            Powered by Stellar Blockchain
+          </div>
+          <h1 className="text-5xl font-bold tracking-tight text-gray-900 sm:text-6xl lg:text-7xl">
+            Transparent supply chains from{" "}
+            <span className="text-[#0066FF]">origin to consumer</span>
+          </h1>
+          <p className="mx-auto mt-6 max-w-2xl text-lg leading-8 text-gray-600 sm:text-xl">
+            ChainLojistic brings immutable transparency to supply chains. Verify
+            authenticity, combat counterfeits, and build trust through
+            tamper-proof blockchain tracking.
+          </p>
+          <div className="mt-10 flex flex-col items-center justify-center gap-4 sm:flex-row">
+            <Link
+              href="/register"
+              className="rounded-lg bg-[#0066FF] px-8 py-3.5 text-base font-semibold text-white shadow-lg shadow-blue-500/25 hover:bg-[#0052CC] transition-all duration-200 hover:shadow-xl hover:shadow-blue-500/30 hover:-translate-y-0.5"
+            >
+              Get Started Free
+            </Link>
+            <Link
+              href="#how-it-works"
+              className="rounded-lg border-2 border-gray-300 bg-white px-8 py-3.5 text-base font-semibold text-gray-900 hover:border-gray-400 hover:bg-gray-50 transition-all duration-200"
+            >
+              See How It Works
+            </Link>
+          </div>
+          <div className="mt-12 flex items-center justify-center gap-8 text-sm text-gray-500">
+            <div className="flex items-center gap-2">
+              <svg
+                className="h-5 w-5 text-green-500"
+                fill="currentColor"
+                viewBox="0 0 20 20"
+                aria-hidden="true"
+              >
+                <path
+                  fillRule="evenodd"
+                  d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z"
+                  clipRule="evenodd"
+                />
+              </svg>
+              No credit card required
+            </div>
+            <div className="flex items-center gap-2">
+              <svg
+                className="h-5 w-5 text-green-500"
+                fill="currentColor"
+                viewBox="0 0 20 20"
+                aria-hidden="true"
+              >
+                <path
+                  fillRule="evenodd"
+                  d="M10 18a8 8 0 100-16 8 8 0 000 16zm3.707-9.293a1 1 0 00-1.414-1.414L9 10.586 7.707 9.293a1 1 0 00-1.414 1.414l2 2a1 1 0 001.414 0l4-4z"
+                  clipRule="evenodd"
+                />
+              </svg>
+              Open source
+            </div>
+          </div>
+        </div>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/HowItWorks.tsx b/frontend/components/layouts/HowItWorks.tsx
new file mode 100644
index 00000000..03ae7490
--- /dev/null
+++ b/frontend/components/layouts/HowItWorks.tsx
@@ -0,0 +1,118 @@
+"use client";
+
+import { AnimatedSection } from "./AnimatedSection";
+
+export function HowItWorks() {
+  const steps = [
+    {
+      number: "1",
+      title: "Register Product",
+      description:
+        "Producers register products at origin with complete details. Each product gets a unique blockchain ID and cryptographic proof of authenticity.",
+      icon: (
+        <svg
+          className="h-8 w-8 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"
+          />
+        </svg>
+      ),
+    },
+    {
+      number: "2",
+      title: "Track Events",
+      description:
+        "As products move through the supply chain, each party adds events: processing, shipping, quality checks. All with timestamps and location data.",
+      icon: (
+        <svg
+          className="h-8 w-8 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M13 10V3L4 14h7v7l9-11h-7z"
+          />
+        </svg>
+      ),
+    },
+    {
+      number: "3",
+      title: "Verify & Trust",
+      description:
+        "Consumers scan QR codes to see the complete product journey. Verify authenticity, check certifications, and make informed decisions.",
+      icon: (
+        <svg
+          className="h-8 w-8 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z"
+          />
+        </svg>
+      ),
+    },
+  ];
+
+  return (
+    <section id="how-it-works" className="bg-gray-50 py-24 sm:py-28">
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <AnimatedSection>
+          <div className="mx-auto max-w-2xl text-center">
+            <h2 className="text-3xl font-bold tracking-tight text-gray-900 sm:text-4xl">
+              How it works
+            </h2>
+            <p className="mt-4 text-lg leading-7 text-gray-600">
+              Simple, transparent, and secure. Three steps to complete supply
+              chain visibility.
+            </p>
+          </div>
+        </AnimatedSection>
+        <div className="mx-auto mt-16 max-w-5xl">
+          <div className="grid grid-cols-1 gap-8 lg:grid-cols-3">
+            {steps.map((step, index) => (
+              <AnimatedSection key={index} delay={index * 150}>
+                <div className="relative">
+                {index < steps.length - 1 && (
+                  <div className="absolute top-12 left-full hidden h-0.5 w-full bg-gray-300 lg:block">
+                    <div className="absolute right-0 top-1/2 h-2 w-2 -translate-y-1/2 translate-x-1/2 rounded-full bg-[#00D4AA]"></div>
+                  </div>
+                )}
+                <div className="flex flex-col items-center text-center">
+                  <div className="mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-[#00D4AA]/10">
+                    {step.icon}
+                  </div>
+                  <div className="mb-2 text-2xl font-bold text-[#0066FF]">
+                    {step.number}
+                  </div>
+                  <h3 className="text-xl font-semibold text-[#1A1A1A]">
+                    {step.title}
+                  </h3>
+                    <p className="mt-2 text-sm text-gray-600">
+                      {step.description}
+                    </p>
+                  </div>
+                </div>
+              </AnimatedSection>
+            ))}
+          </div>
+        </div>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/NavBar.tsx b/frontend/components/layouts/NavBar.tsx
new file mode 100644
index 00000000..d06ce7cb
--- /dev/null
+++ b/frontend/components/layouts/NavBar.tsx
@@ -0,0 +1,26 @@
+"use client";
+
+import Link from "next/link";
+import { WalletStatus } from "../wallet";
+
+export function NavBar() {
+    return (
+        <nav aria-label="Main navigation" className="border-b bg-white dark:bg-zinc-950 px-6 py-4">
+            <div className="mx-auto max-w-7xl flex items-center justify-between">
+                <Link href="/dashboard" className="text-xl font-bold bg-gradient-to-r from-blue-600 to-indigo-600 bg-clip-text text-transparent">
+                    ChainLogistics
+                </Link>
+
+                <div className="flex items-center gap-8">
+                    <div className="hidden md:flex items-center gap-6 text-sm font-medium text-zinc-600 dark:text-zinc-400">
+                        <Link href="/dashboard" className="hover:text-blue-600 transition-colors">Dashboard</Link>
+                        <Link href="/register" className="hover:text-blue-600 transition-colors">Register Product</Link>
+                        <Link href="/tracking" className="hover:text-blue-600 transition-colors">Tracking</Link>
+                    </div>
+
+                    <WalletStatus />
+                </div>
+            </div>
+        </nav>
+    );
+}
diff --git a/frontend/components/layouts/Navigation.tsx b/frontend/components/layouts/Navigation.tsx
new file mode 100644
index 00000000..46427311
--- /dev/null
+++ b/frontend/components/layouts/Navigation.tsx
@@ -0,0 +1,104 @@
+"use client";
+
+import Link from "next/link";
+import { useState, useEffect } from "react";
+
+export function Navigation() {
+  const [scrolled, setScrolled] = useState(false);
+
+  useEffect(() => {
+    const handleScroll = () => {
+      setScrolled(window.scrollY > 20);
+    };
+    window.addEventListener("scroll", handleScroll);
+    return () => window.removeEventListener("scroll", handleScroll);
+  }, []);
+
+  const handleNavClick = (e: React.MouseEvent<HTMLAnchorElement>, href: string) => {
+    if (href.startsWith("#")) {
+      e.preventDefault();
+      const element = document.querySelector(href);
+      if (element) {
+        const offset = 80; // navbar height + padding
+        const elementPosition = element.getBoundingClientRect().top;
+        const offsetPosition = elementPosition + window.pageYOffset - offset;
+
+        window.scrollTo({
+          top: offsetPosition,
+          behavior: "smooth",
+        });
+      }
+    }
+  };
+
+  return (
+    <nav
+      aria-label="Main navigation"
+      className={`fixed top-0 left-0 right-0 z-50 transition-all duration-300 ${
+        scrolled
+          ? "bg-white/95 backdrop-blur-md shadow-sm border-b border-gray-200"
+          : "bg-white/80 backdrop-blur-sm border-b border-gray-100"
+      }`}
+    >
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <div className="flex h-16 items-center justify-between">
+          <Link
+            href="/"
+            className="text-xl font-bold text-gray-900 hover:text-[#0066FF] transition-colors"
+          >
+            ChainLojistic
+          </Link>
+          <div className="hidden md:flex md:items-center md:gap-8">
+            <Link
+              href="#features"
+              onClick={(e) => handleNavClick(e, "#features")}
+              className="text-sm font-medium text-gray-700 hover:text-[#0066FF] transition-colors duration-200"
+            >
+              Features
+            </Link>
+            <Link
+              href="#how-it-works"
+              onClick={(e) => handleNavClick(e, "#how-it-works")}
+              className="text-sm font-medium text-gray-700 hover:text-[#0066FF] transition-colors duration-200"
+            >
+              How It Works
+            </Link>
+            <Link
+              href="#use-cases"
+              onClick={(e) => handleNavClick(e, "#use-cases")}
+              className="text-sm font-medium text-gray-700 hover:text-[#0066FF] transition-colors duration-200"
+            >
+              Use Cases
+            </Link>
+            <Link
+              href="/register"
+              className="rounded-lg bg-[#0066FF] px-5 py-2 text-sm font-semibold text-white shadow-md shadow-blue-500/25 hover:bg-[#0052CC] hover:shadow-lg transition-all duration-200"
+            >
+              Get Started
+            </Link>
+          </div>
+          <button
+            className="md:hidden text-[#1A1A1A]"
+            aria-label="Open menu"
+            aria-expanded="false"
+          >
+            <svg
+              className="h-6 w-6"
+              fill="none"
+              viewBox="0 0 24 24"
+              stroke="currentColor"
+              aria-hidden="true"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={2}
+                d="M4 6h16M4 12h16M4 18h16"
+              />
+            </svg>
+          </button>
+        </div>
+      </div>
+    </nav>
+  );
+}
diff --git a/frontend/components/layouts/ProblemStats.tsx b/frontend/components/layouts/ProblemStats.tsx
new file mode 100644
index 00000000..61d120b0
--- /dev/null
+++ b/frontend/components/layouts/ProblemStats.tsx
@@ -0,0 +1,96 @@
+"use client";
+
+import { AnimatedSection } from "./AnimatedSection";
+
+export function ProblemStats() {
+  const stats = [
+    {
+      value: "$4.5T",
+      label: "Lost annually to counterfeit goods",
+      icon: (
+        <svg
+          className="h-8 w-8 text-[#FF6B35]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z"
+          />
+        </svg>
+      ),
+    },
+    {
+      value: "73%",
+      label: "Of consumers don't trust product claims",
+      icon: (
+        <svg
+          className="h-8 w-8 text-[#FF6B35]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.04A12.02 12.02 0 003 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622 0-1.042-.133-2.052-.382-3.016z"
+          />
+        </svg>
+      ),
+    },
+    {
+      value: "$40B+",
+      label: "Lost annually in supply chain fraud",
+      icon: (
+        <svg
+          className="h-8 w-8 text-[#FF6B35]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M12 8c-1.657 0-3 .895-3 2s1.343 2 3 2 3 .895 3 2-1.343 2-3 2m0-8c1.11 0 2.08.402 2.599 1M12 8V7m0 1v8m0 0v1m0-1c-1.11 0-2.08-.402-2.599-1M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+          />
+        </svg>
+      ),
+    },
+  ];
+
+  return (
+    <section className="bg-gray-50 py-24 sm:py-28">
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <AnimatedSection>
+          <div className="mx-auto max-w-2xl text-center">
+            <h2 className="text-3xl font-bold tracking-tight text-gray-900 sm:text-4xl">
+              The problem is real
+            </h2>
+            <p className="mt-4 text-lg leading-7 text-gray-600">
+              Modern supply chains face critical trust challenges that cost
+              trillions and put lives at risk.
+            </p>
+          </div>
+        </AnimatedSection>
+        <div className="mx-auto mt-16 grid max-w-7xl grid-cols-1 gap-8 sm:grid-cols-3">
+          {stats.map((stat, index) => (
+            <AnimatedSection key={index} delay={index * 100}>
+              <div className="flex flex-col items-center rounded-lg bg-white p-6 text-center shadow-sm hover:shadow-md transition-all duration-300 hover:-translate-y-1 hover:scale-105">
+              <div className="mb-4">{stat.icon}</div>
+              <div className="text-4xl font-bold text-[#1A1A1A]">
+                {stat.value}
+              </div>
+                <div className="mt-2 text-sm text-gray-600">{stat.label}</div>
+              </div>
+            </AnimatedSection>
+          ))}
+        </div>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/TrustBlockchain.tsx b/frontend/components/layouts/TrustBlockchain.tsx
new file mode 100644
index 00000000..be0f2d66
--- /dev/null
+++ b/frontend/components/layouts/TrustBlockchain.tsx
@@ -0,0 +1,120 @@
+"use client";
+
+import Link from "next/link";
+import { AnimatedSection } from "./AnimatedSection";
+
+export function TrustBlockchain() {
+  const trustPoints = [
+    {
+      title: "Open Source",
+      description: "Transparent, auditable code. Built by the community, for the community.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M10 20l4-16m4 4l4 4-4 4M6 16l-4-4 4-4"
+          />
+        </svg>
+      ),
+    },
+    {
+      title: "Stellar Blockchain",
+      description: "Powered by Stellar's Soroban smart contracts. Fast, low-cost, and reliable.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M13 10V3L4 14h7v7l9-11h-7z"
+          />
+        </svg>
+      ),
+    },
+    {
+      title: "Immutable Records",
+      description: "Once recorded, data cannot be altered. Complete transparency and auditability.",
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#0066FF]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 12l2 2 4-4m5.618-4.016A11.955 11.955 0 0112 2.944a11.955 11.955 0 01-8.618 3.04A12.02 12.02 0 003 9c0 5.591 3.824 10.29 9 11.622 5.176-1.332 9-6.03 9-11.622 0-1.042-.133-2.052-.382-3.016z"
+          />
+        </svg>
+      ),
+    },
+  ];
+
+  return (
+    <section className="bg-gray-50 py-24 sm:py-28">
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <AnimatedSection>
+          <div className="mx-auto max-w-2xl text-center">
+            <h2 className="text-3xl font-bold tracking-tight text-gray-900 sm:text-4xl">
+              Built on trust and transparency
+            </h2>
+            <p className="mt-4 text-lg leading-7 text-gray-600">
+              ChainLojistic leverages blockchain technology to create an
+              unbreakable chain of trust from producer to consumer.
+            </p>
+          </div>
+        </AnimatedSection>
+        <div className="mx-auto mt-16 grid max-w-7xl grid-cols-1 gap-8 lg:grid-cols-3">
+          {trustPoints.map((point, index) => (
+            <AnimatedSection key={index} delay={index * 100}>
+              <div className="flex flex-col rounded-lg bg-white p-6 shadow-sm hover:shadow-md transition-all duration-300 hover:-translate-y-1">
+              <div className="mb-4">{point.icon}</div>
+              <h3 className="text-lg font-semibold text-[#1A1A1A]">
+                {point.title}
+              </h3>
+                <p className="mt-2 text-sm text-gray-600">{point.description}</p>
+              </div>
+            </AnimatedSection>
+          ))}
+        </div>
+        <AnimatedSection delay={300}>
+          <div className="mt-12 text-center">
+          <Link
+            href="https://github.com/ChainLojistics/ChainLogistics"
+            target="_blank"
+            rel="noopener noreferrer"
+            className="inline-flex items-center gap-2 rounded-lg border-2 border-[#0066FF] px-6 py-3 text-base font-semibold text-[#0066FF] hover:bg-[#0066FF] hover:text-white transition-all"
+          >
+            <svg
+              className="h-5 w-5"
+              fill="currentColor"
+              viewBox="0 0 24 24"
+            >
+              <path
+                fillRule="evenodd"
+                d="M12 2C6.477 2 2 6.477 2 12c0 4.42 2.865 8.17 6.839 9.49.5.092.682-.217.682-.482 0-.237-.008-.866-.013-1.7-2.782.603-3.369-1.34-3.369-1.34-.454-1.156-1.11-1.463-1.11-1.463-.908-.62.069-.608.069-.608 1.003.07 1.531 1.03 1.531 1.03.892 1.529 2.341 1.088 2.91.832.092-.647.35-1.088.636-1.338-2.22-.253-4.555-1.11-4.555-4.943 0-1.091.39-1.984 1.029-2.683-.103-.253-.446-1.27.098-2.647 0 0 .84-.269 2.75 1.025A9.578 9.578 0 0112 6.836c.85.004 1.705.114 2.504.336 1.909-1.294 2.747-1.025 2.747-1.025.546 1.377.203 2.394.1 2.647.64.699 1.028 1.592 1.028 2.683 0 3.842-2.339 4.687-4.566 4.935.359.309.678.919.678 1.852 0 1.336-.012 2.415-.012 2.743 0 .267.18.578.688.48C19.138 20.167 22 16.418 22 12c0-5.523-4.477-10-10-10z"
+                clipRule="evenodd"
+              />
+            </svg>
+            View on GitHub
+          </Link>
+          </div>
+        </AnimatedSection>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/UseCases.tsx b/frontend/components/layouts/UseCases.tsx
new file mode 100644
index 00000000..64a2d5bb
--- /dev/null
+++ b/frontend/components/layouts/UseCases.tsx
@@ -0,0 +1,138 @@
+"use client";
+
+import { AnimatedSection } from "./AnimatedSection";
+
+export function UseCases() {
+  const useCases = [
+    {
+      title: "Food & Agriculture",
+      description:
+        "Verify organic certifications, track farm-to-table journeys, and ensure food safety. Consumers can see exactly where their food comes from.",
+      examples: ["Organic produce", "Fair-trade coffee", "Sustainable seafood"],
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M12 6.253v13m0-13C10.832 5.477 9.246 5 7.5 5S4.168 5.477 3 6.253v13C4.168 18.477 5.754 18 7.5 18s3.332.477 4.5 1.253m0-13C13.168 5.477 14.754 5 16.5 5c1.747 0 3.332.477 4.5 1.253v13C19.832 18.477 18.247 18 16.5 18c-1.746 0-3.332.477-4.5 1.253"
+          />
+        </svg>
+      ),
+    },
+    {
+      title: "Pharmaceuticals",
+      description:
+        "Combat counterfeit medications that kill 250,000+ people annually. Verify drug authenticity and ensure patient safety with immutable records.",
+      examples: ["Prescription drugs", "Vaccines", "Medical devices"],
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M19.428 15.428a2 2 0 00-1.022-.547l-2.387-.477a6 6 0 00-3.86.517l-.318.158a6 6 0 01-3.86.517L6.05 15.21a2 2 0 00-1.806.547M8 4h8l-1 1v5.172a2 2 0 00.586 1.414l5 5c1.26 1.26.367 3.414-1.415 3.414H4.828c-1.782 0-2.674-2.154-1.414-3.414l5-5A2 2 0 009 10.172V5L8 4z"
+          />
+        </svg>
+      ),
+    },
+    {
+      title: "Electronics",
+      description:
+        "Ensure ethical sourcing of conflict minerals, verify manufacturing locations, and prevent counterfeit electronics from entering the market.",
+      examples: ["Smartphones", "Laptops", "Components"],
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M9 3v2m6-2v2M9 19v2m6-2v2M5 9H3m2 6H3m18-6h-2m2 6h-2M7 19h10a2 2 0 002-2V7a2 2 0 00-2-2H7a2 2 0 00-2 2v10a2 2 0 002 2zM9 9h6v6H9V9z"
+          />
+        </svg>
+      ),
+    },
+    {
+      title: "Luxury Goods",
+      description:
+        "Protect brands from counterfeits and give customers confidence in their purchases. Verify authenticity of high-value items with blockchain proof.",
+      examples: ["Watches", "Handbags", "Jewelry"],
+      icon: (
+        <svg
+          className="h-6 w-6 text-[#00D4AA]"
+          fill="none"
+          viewBox="0 0 24 24"
+          stroke="currentColor"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M5 3v4M3 5h4M6 17v4m-2-2h4m5-16l2.286 6.857L21 12l-5.714 2.143L13 21l-2.286-6.857L5 12l5.714-2.143L13 3z"
+          />
+        </svg>
+      ),
+    },
+  ];
+
+  return (
+    <section id="use-cases" className="bg-white py-24 sm:py-28">
+      <div className="mx-auto max-w-7xl px-6 lg:px-8">
+        <AnimatedSection>
+          <div className="mx-auto max-w-2xl text-center">
+            <h2 className="text-3xl font-bold tracking-tight text-gray-900 sm:text-4xl">
+              Who uses ChainLojistic
+            </h2>
+            <p className="mt-4 text-lg leading-7 text-gray-600">
+              Trusted by producers, manufacturers, and consumers across industries.
+            </p>
+          </div>
+        </AnimatedSection>
+        <div className="mx-auto mt-16 grid max-w-7xl grid-cols-1 gap-8 lg:grid-cols-2">
+          {useCases.map((useCase, index) => (
+            <AnimatedSection key={index} delay={index * 100}>
+              <div className="flex flex-col rounded-lg border border-gray-200 bg-white p-8 shadow-sm hover:shadow-md transition-all duration-300 hover:-translate-y-2 hover:scale-[1.01]">
+              <div className="mb-4 flex items-center gap-3">
+                <div className="flex h-10 w-10 items-center justify-center rounded-lg bg-[#00D4AA]/10">
+                  {useCase.icon}
+                </div>
+                <h3 className="text-xl font-semibold text-[#1A1A1A]">
+                  {useCase.title}
+                </h3>
+              </div>
+              <p className="mb-4 text-sm text-gray-600">
+                {useCase.description}
+              </p>
+              <div className="mt-auto flex flex-wrap gap-2">
+                {useCase.examples.map((example, i) => (
+                  <span
+                    key={i}
+                    className="rounded-full bg-[#F5F5F5] px-3 py-1 text-xs font-medium text-gray-700"
+                  >
+                    {example}
+                  </span>
+                ))}
+                </div>
+              </div>
+            </AnimatedSection>
+          ))}
+        </div>
+      </div>
+    </section>
+  );
+}
diff --git a/frontend/components/layouts/index.ts b/frontend/components/layouts/index.ts
new file mode 100644
index 00000000..2a5d6929
--- /dev/null
+++ b/frontend/components/layouts/index.ts
@@ -0,0 +1,11 @@
+export { Navigation } from "./Navigation";
+export { Hero } from "./Hero";
+export { ProblemStats } from "./ProblemStats";
+export { Features } from "./Features";
+export { HowItWorks } from "./HowItWorks";
+export { UseCases } from "./UseCases";
+export { TrustBlockchain } from "./TrustBlockchain";
+export { CTA } from "./CTA";
+export { Footer } from "./Footer";
+export { AnimatedSection } from "./AnimatedSection";
+export * from "./NavBar";
diff --git a/frontend/components/products/ProductCard.test.tsx b/frontend/components/products/ProductCard.test.tsx
new file mode 100644
index 00000000..d93f098b
--- /dev/null
+++ b/frontend/components/products/ProductCard.test.tsx
@@ -0,0 +1,118 @@
+import { render, screen } from '@testing-library/react';
+import { describe, it, expect, vi } from 'vitest';
+import { ProductCard } from './ProductCard';
+import type { Product } from '@/lib/types/product';
+
+// Mock next/link
+vi.mock('next/link', () => ({
+  default: ({ children, href }: { children: React.ReactNode; href: string }) => (
+    <a href={href}>{children}</a>
+  ),
+}));
+
+// Mock next/navigation
+vi.mock('next/navigation', () => ({
+  useRouter: () => ({
+    push: vi.fn(),
+  }),
+}));
+
+const mockProduct: Product = {
+  id: 'PROD-TEST-123',
+  name: 'Organic Coffee Beans',
+  description: 'Premium organic coffee from Ethiopia',
+  origin: {
+    location: 'Ethiopia',
+  },
+  owner: 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7',
+  created_at: Date.now() / 1000,
+  active: true,
+  category: 'Food & Beverage',
+  tags: ['organic', 'fair-trade', 'premium'],
+  eventCount: 5,
+};
+
+describe('ProductCard component', () => {
+  it('should render product information correctly', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    expect(screen.getByText('Organic Coffee Beans')).toBeInTheDocument();
+    expect(screen.getByText('ID: PROD-TEST-123')).toBeInTheDocument();
+    expect(screen.getByText('Ethiopia')).toBeInTheDocument();
+    expect(screen.getByText('Food & Beverage')).toBeInTheDocument();
+  });
+
+  it('should display active status badge correctly', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    const statusBadge = screen.getByText('Active');
+    expect(statusBadge).toBeInTheDocument();
+  });
+
+  it('should display inactive status badge correctly', () => {
+    const inactiveProduct = { ...mockProduct, active: false };
+    render(<ProductCard product={inactiveProduct} />);
+
+    const statusBadge = screen.getByText('Inactive');
+    expect(statusBadge).toBeInTheDocument();
+  });
+
+  it('should display event count correctly', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    expect(screen.getByText('5 Events')).toBeInTheDocument();
+  });
+
+  it('should display singular event count correctly', () => {
+    const singleEventProduct = { ...mockProduct, eventCount: 1 };
+    render(<ProductCard product={singleEventProduct} />);
+
+    expect(screen.getByText('1 Event')).toBeInTheDocument();
+  });
+
+  it('should truncate owner address correctly', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    expect(screen.getByText('GCFX…Z7Z7')).toBeInTheDocument();
+  });
+
+  it('should display tags when available', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    expect(screen.getByText('organic')).toBeInTheDocument();
+    expect(screen.getByText('fair-trade')).toBeInTheDocument();
+  });
+
+  it('should have correct link to product details', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    const viewLink = screen.getByRole('link', { name: /^view$/i });
+    expect(viewLink).toHaveAttribute('href', '/products/PROD-TEST-123');
+  });
+
+  it('should have correct link to add event page', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    const addEventLink = screen.getByRole('link', { name: /add event/i });
+    expect(addEventLink).toHaveAttribute('href', '/products/PROD-TEST-123/add-event');
+  });
+
+  it('should format date correctly', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    const formattedDate = new Date(mockProduct.created_at * 1000).toLocaleDateString('en-US', {
+      year: 'numeric',
+      month: 'short',
+      day: 'numeric',
+    });
+
+    expect(screen.getByText(formattedDate)).toBeInTheDocument();
+  });
+
+  it('should have accessible elements', () => {
+    render(<ProductCard product={mockProduct} />);
+
+    expect(screen.getByRole('link', { name: /add event/i })).toBeInTheDocument();
+    expect(screen.getByRole('link', { name: /view details/i })).toBeInTheDocument();
+  });
+});
diff --git a/frontend/components/products/ProductCard.tsx b/frontend/components/products/ProductCard.tsx
new file mode 100644
index 00000000..ac8bf836
--- /dev/null
+++ b/frontend/components/products/ProductCard.tsx
@@ -0,0 +1,113 @@
+"use client";
+
+import React from 'react';
+import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+import { Button } from '@/components/ui/button';
+import { MapPin, Package, CalendarPlus, ChevronRight, Tag, User } from 'lucide-react';
+import Link from 'next/link';
+import type { Product } from "@/lib/types/product";
+import { normalizeUnixSeconds } from "@/lib/types/product";
+import { shortenPublicKey } from "@/lib/utils/format";
+import { formatDate, formatNumber } from "@/lib/i18n/format";
+import { useTranslation } from "react-i18next";
+
+interface ProductCardProps {
+  product: Product;
+}
+
+export function ProductCard({ product }: ProductCardProps) {
+  const { t } = useTranslation();
+
+  const owner = product.owner || product.owner_address || "";
+  const isActive = product.active ?? product.is_active ?? product.isActive ?? false;
+
+  return (
+    <Card className="block group relative overflow-hidden bg-white hover:border-zinc-300 transition-all duration-200 hover:shadow-lg">
+      <Link href={`/products/${product.id}`} className="absolute inset-0 z-0">
+        <span className="sr-only">View Details for {product.name}</span>
+      </Link>
+
+      <CardHeader className="pb-4">
+        <div className="flex items-start justify-between">
+          <div className="space-y-1">
+            <CardTitle className="flex items-center gap-2 text-xl">
+              <Package className="h-5 w-5 text-muted-foreground" aria-hidden="true" />
+              {product.name}
+            </CardTitle>
+            <CardDescription className="text-sm font-mono">ID: {product.id}</CardDescription>
+          </div>
+          <Badge
+            variant={isActive ? 'default' : 'secondary'}
+            className={isActive ? 'bg-green-100 text-green-700 hover:bg-green-200' : 'bg-red-100 text-red-700 hover:bg-red-200'}
+          >
+            {isActive ? 'Active' : 'Inactive'}
+          </Badge>
+        </div>
+      </CardHeader>
+
+      <CardContent className="pb-4">
+        <div className="flex flex-col space-y-2 text-sm text-zinc-600">
+          <div className="flex items-center gap-2">
+            <MapPin className="h-4 w-4" aria-hidden="true" />
+            <span className="font-medium">Origin:</span>
+            <span>{product.origin?.location || product.origin_location || "N/A"}</span>
+          </div>
+          <div className="flex items-center gap-2">
+            <Tag className="h-4 w-4" aria-hidden="true" />
+            <span className="font-medium">{t("category")}:</span>
+            <span>{product.category}</span>
+          </div>
+          <div className="flex items-center gap-2">
+            <User className="h-4 w-4" aria-hidden="true" />
+            <span className="font-medium">{t("owner")}:</span>
+            <span className="font-mono">{shortenPublicKey(owner)}</span>
+          </div>
+          <div className="flex items-center gap-2">
+            <CalendarPlus className="h-4 w-4" aria-hidden="true" />
+            <span className="font-medium">Created:</span>
+            <span>
+              {formatDate(normalizeUnixSeconds(product.created_at ?? product.createdAt ?? 0) * 1000, {
+                year: "numeric",
+                month: "short",
+                day: "numeric",
+              })}
+            </span>
+          </div>
+        </div>
+      </CardContent>
+
+      <CardFooter className="flex items-center justify-between gap-2 z-10 relative border-t border-zinc-100 pt-4">
+        <div className="flex items-center gap-2 text-sm text-zinc-600">
+          <Badge variant="outline" className="font-normal bg-zinc-50 border-zinc-200">
+            {formatNumber(product.eventCount ?? 0)} {product.eventCount === 1 ? 'Event' : 'Events'}
+          </Badge>
+        </div>
+
+        <div className="flex items-center gap-2">
+          {product.tags && product.tags.length > 0 && (
+            <div className="hidden sm:flex gap-1 flex-wrap mr-2">
+              {product.tags.slice(0, 2).map((tag, idx) => (
+                <span key={idx} className="px-2 py-0.5 bg-zinc-100 text-zinc-600 text-xs rounded">
+                  {tag}
+                </span>
+              ))}
+            </div>
+          )}
+          <Button variant="outline" size="sm" asChild>
+            <Link href={`/products/${product.id}/add-event`}>
+              <CalendarPlus className="sm:mr-2 h-4 w-4" />
+              <span className="hidden sm:inline">Add Event</span>
+            </Link>
+          </Button>
+          <Button variant="secondary" size="sm" asChild>
+            <Link href={`/products/${product.id}`}>
+              <span className="hidden sm:inline">View</span>
+              <ChevronRight className="sm:ml-2 h-4 w-4" />
+            </Link>
+          </Button>
+        </div>
+      </CardFooter>
+    </Card>
+  );
+}
diff --git a/frontend/components/products/ProductFilters.tsx b/frontend/components/products/ProductFilters.tsx
new file mode 100644
index 00000000..a91252b2
--- /dev/null
+++ b/frontend/components/products/ProductFilters.tsx
@@ -0,0 +1,315 @@
+"use client";
+
+import { useMemo, useState, useEffect } from "react";
+import { SearchInput, type SearchInputSuggestion } from "@/components/ui/SearchInput";
+import {
+  loadSavedSearches,
+  persistSavedSearches,
+  type SavedSearch,
+} from "@/lib/search/savedSearches";
+
+export type FilterState = {
+  search: string;
+  owner: string;
+  category: string;
+  status: "all" | "active" | "inactive";
+  dateFrom: string;
+  dateTo: string;
+};
+
+ type SavedFilters = FilterState;
+
+type ProductFiltersProps = {
+  filters: FilterState;
+  onFiltersChange: (filters: FilterState) => void;
+  availableCategories: string[];
+  availableOwners: string[];
+  suggestions?: readonly SearchInputSuggestion[];
+};
+
+export function ProductFilters({
+  filters,
+  onFiltersChange,
+  availableCategories,
+  availableOwners,
+  suggestions = [],
+}: ProductFiltersProps) {
+  const [localSearch, setLocalSearch] = useState(filters.search);
+
+  const storageKey = "chainlogistics.products.savedSearches";
+  const [saved, setSaved] = useState<SavedSearch<SavedFilters>[]>([]);
+  const [saveName, setSaveName] = useState("");
+
+  // Debounce search input
+  useEffect(() => {
+    const timer = setTimeout(() => {
+      onFiltersChange({ ...filters, search: localSearch });
+    }, 300);
+
+    return () => clearTimeout(timer);
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [localSearch]);
+
+  useEffect(() => {
+    // Use setTimeout to avoid calling setState synchronously in effect
+    const timeoutId = setTimeout(() => {
+      setSaved(loadSavedSearches<SavedFilters>(storageKey));
+    }, 0);
+    
+    return () => clearTimeout(timeoutId);
+  }, []);
+
+  const updateFilter = (key: keyof FilterState, value: string) => {
+    onFiltersChange({ ...filters, [key]: value });
+  };
+
+  const clearFilters = () => {
+    const cleared: FilterState = {
+      search: "",
+      owner: "",
+      category: "",
+      status: "all",
+      dateFrom: "",
+      dateTo: "",
+    };
+    setLocalSearch("");
+    onFiltersChange(cleared);
+  };
+
+  const canSave = useMemo(() => {
+    const name = saveName.trim();
+    if (!name) return false;
+    return true;
+  }, [saveName]);
+
+  const saveCurrent = () => {
+    const name = saveName.trim();
+    if (!name) return;
+
+    const next: SavedSearch<SavedFilters> = {
+      id: `${Date.now()}-${Math.random().toString(16).slice(2)}`,
+      name,
+      filters,
+      createdAt: Date.now(),
+    };
+
+    const nextSaved = [next, ...saved].slice(0, 20);
+    setSaved(nextSaved);
+    persistSavedSearches(storageKey, nextSaved);
+    setSaveName("");
+  };
+
+  const applySaved = (item: SavedSearch<SavedFilters>) => {
+    setLocalSearch(item.filters.search);
+    onFiltersChange(item.filters);
+  };
+
+  const deleteSaved = (id: string) => {
+    const nextSaved = saved.filter((s) => s.id !== id);
+    setSaved(nextSaved);
+    persistSavedSearches(storageKey, nextSaved);
+  };
+
+  const hasActiveFilters =
+    filters.search ||
+    filters.owner ||
+    filters.category ||
+    filters.status !== "all" ||
+    filters.dateFrom ||
+    filters.dateTo;
+
+  return (
+    <div className="bg-white rounded-lg border border-zinc-200 p-6 mb-6">
+      <div className="flex items-center justify-between mb-4">
+        <h2 className="text-lg font-semibold text-zinc-900">Filters</h2>
+        {hasActiveFilters && (
+          <button
+            onClick={clearFilters}
+            className="text-sm text-zinc-600 hover:text-zinc-900 underline"
+          >
+            Clear all
+          </button>
+        )}
+      </div>
+
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
+        {/* Search */}
+        <div className="lg:col-span-3">
+          <label
+            htmlFor="search"
+            className="block text-sm font-medium text-zinc-700 mb-2"
+          >
+            Search
+          </label>
+          <SearchInput
+            id="search"
+            value={localSearch}
+            onValueChange={setLocalSearch}
+            suggestions={suggestions}
+            placeholder="Search by name, ID, or origin..."
+            minQueryLength={1}
+            maxSuggestions={8}
+            emptyText="No suggestions"
+          />
+        </div>
+
+        {/* Saved Searches */}
+        <div className="lg:col-span-3">
+          <div className="flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between">
+            <div className="flex-1">
+              <label className="block text-sm font-medium text-zinc-700 mb-2" htmlFor="saveSearchName">
+                Saved searches
+              </label>
+              <div className="flex gap-2">
+                <input
+                  id="saveSearchName"
+                  type="text"
+                  value={saveName}
+                  onChange={(e) => setSaveName(e.target.value)}
+                  placeholder="Name this search..."
+                  className="flex-1 px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none"
+                />
+                <button
+                  type="button"
+                  onClick={saveCurrent}
+                  disabled={!canSave}
+                  className="px-4 py-2 rounded-lg bg-blue-600 text-white text-sm font-semibold hover:bg-blue-700 disabled:opacity-50"
+                >
+                  Save
+                </button>
+              </div>
+            </div>
+          </div>
+
+          {saved.length > 0 ? (
+            <div className="mt-3 flex flex-wrap gap-2">
+              {saved.map((s) => (
+                <div key={s.id} className="inline-flex items-center overflow-hidden rounded-lg border border-zinc-200 bg-zinc-50">
+                  <button
+                    type="button"
+                    onClick={() => applySaved(s)}
+                    className="px-3 py-1.5 text-sm text-zinc-900 hover:bg-zinc-100"
+                    title="Apply saved search"
+                  >
+                    {s.name}
+                  </button>
+                  <button
+                    type="button"
+                    onClick={() => deleteSaved(s.id)}
+                    className="px-2 py-1.5 text-sm text-zinc-500 hover:bg-zinc-100 hover:text-zinc-900"
+                    aria-label={`Delete saved search ${s.name}`}
+                    title="Delete saved search"
+                  >
+                    ×
+                  </button>
+                </div>
+              ))}
+            </div>
+          ) : null}
+        </div>
+
+        {/* Owner Filter */}
+        <div>
+          <label
+            htmlFor="owner"
+            className="block text-sm font-medium text-zinc-700 mb-2"
+          >
+            Owner
+          </label>
+          <select
+            id="owner"
+            value={filters.owner}
+            onChange={(e) => updateFilter("owner", e.target.value)}
+            className="w-full px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none bg-white"
+          >
+            <option value="">All owners</option>
+            {availableOwners.map((owner) => (
+              <option key={owner} value={owner}>
+                {owner.slice(0, 8)}...{owner.slice(-6)}
+              </option>
+            ))}
+          </select>
+        </div>
+
+        {/* Category Filter */}
+        <div>
+          <label
+            htmlFor="category"
+            className="block text-sm font-medium text-zinc-700 mb-2"
+          >
+            Category
+          </label>
+          <select
+            id="category"
+            value={filters.category}
+            onChange={(e) => updateFilter("category", e.target.value)}
+            className="w-full px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none bg-white"
+          >
+            <option value="">All categories</option>
+            {availableCategories.map((category) => (
+              <option key={category} value={category}>
+                {category}
+              </option>
+            ))}
+          </select>
+        </div>
+
+        {/* Status Filter */}
+        <div>
+          <label
+            htmlFor="status"
+            className="block text-sm font-medium text-zinc-700 mb-2"
+          >
+            Status
+          </label>
+          <select
+            id="status"
+            value={filters.status}
+            onChange={(e) =>
+              updateFilter("status", e.target.value as FilterState["status"])
+            }
+            className="w-full px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none bg-white"
+          >
+            <option value="all">All statuses</option>
+            <option value="active">Active</option>
+            <option value="inactive">Inactive</option>
+          </select>
+        </div>
+
+        {/* Date From */}
+        <div>
+          <label
+            htmlFor="dateFrom"
+            className="block text-sm font-medium text-zinc-700 mb-2"
+          >
+            Date From
+          </label>
+          <input
+            id="dateFrom"
+            type="date"
+            value={filters.dateFrom}
+            onChange={(e) => updateFilter("dateFrom", e.target.value)}
+            className="w-full px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none"
+          />
+        </div>
+
+        {/* Date To */}
+        <div>
+          <label
+            htmlFor="dateTo"
+            className="block text-sm font-medium text-zinc-700 mb-2"
+          >
+            Date To
+          </label>
+          <input
+            id="dateTo"
+            type="date"
+            value={filters.dateTo}
+            onChange={(e) => updateFilter("dateTo", e.target.value)}
+            className="w-full px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none"
+          />
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/products/ProductList.tsx b/frontend/components/products/ProductList.tsx
new file mode 100644
index 00000000..e5601899
--- /dev/null
+++ b/frontend/components/products/ProductList.tsx
@@ -0,0 +1,309 @@
+"use client";
+/* eslint-disable react-hooks/set-state-in-effect */
+import { useMemo, useState, useEffect } from "react";
+import type { Product } from "@/lib/types/product";
+import { normalizeUnixSeconds } from "@/lib/types/product";
+import { fuzzyScore } from "@/lib/search/fuzzy";
+import type { FilterState } from "./ProductFilters";
+import { ProductCard } from "./ProductCard";
+import { Skeleton } from "@/components/ui";
+
+export type SortOption = "newest" | "oldest" | "name" | "relevance";
+
+type ProductListProps = {
+  products: Product[];
+  filters: FilterState;
+  isLoading?: boolean;
+};
+
+const ITEMS_PER_PAGE = 12;
+
+export function ProductList({
+  products,
+  filters,
+  isLoading = false,
+}: ProductListProps) {
+  const [sortBy, setSortBy] = useState<SortOption>("newest");
+  const [currentPage, setCurrentPage] = useState(1);
+
+  // Filter products
+  const filteredProducts = useMemo(() => {
+    const q = filters.search.trim();
+
+    return products
+      .map((product) => {
+        if (!q) return { product, matchScore: 0 };
+
+        const fields = [
+          product.name,
+          product.id,
+          product.description ?? "",
+          product.origin.location,
+        ];
+
+        let best = 0;
+        let matchedAny = false;
+
+        for (const field of fields) {
+          const res = fuzzyScore(q, field);
+          if (res.matched) {
+            matchedAny = true;
+            best = Math.max(best, res.score);
+          }
+        }
+
+        return { product, matchScore: matchedAny ? best : -1 };
+      })
+      .filter(({ product, matchScore }) => {
+        if (q && matchScore < 0) return false;
+
+        // Owner filter
+        if (filters.owner && product.owner !== filters.owner) {
+          return false;
+        }
+
+        // Category filter
+        if (filters.category && product.category !== filters.category) {
+          return false;
+        }
+
+        // Status filter
+        if (filters.status !== "all") {
+          const isActive = filters.status === "active";
+          const productIsActive =
+            product.active ?? product.is_active ?? product.isActive ?? false;
+          if (productIsActive !== isActive) return false;
+        }
+
+        // Date range filter
+        const createdAt = normalizeUnixSeconds(product.created_at ?? product.createdAt ?? 0);
+        if (filters.dateFrom) {
+          const fromDate = new Date(filters.dateFrom).getTime() / 1000;
+          if (createdAt < fromDate) return false;
+        }
+        if (filters.dateTo) {
+          const toDate = new Date(filters.dateTo).getTime() / 1000;
+          // Add one day to include the entire end date
+          const toDateEnd = toDate + 24 * 60 * 60;
+          if (createdAt > toDateEnd) return false;
+        }
+
+        return true;
+      })
+      .map((x) => x);
+  }, [products, filters]);
+
+  // Sort products
+  const sortedProducts = useMemo(() => {
+    const sorted = [...filteredProducts];
+    switch (sortBy) {
+      case "relevance":
+        return sorted
+          .sort((a, b) => b.matchScore - a.matchScore)
+          .map((x) => x.product);
+      case "newest":
+        return sorted
+          .map((x) => x.product)
+          .sort(
+            (a, b) =>
+              normalizeUnixSeconds(b.created_at ?? b.createdAt ?? 0) -
+              normalizeUnixSeconds(a.created_at ?? a.createdAt ?? 0)
+          );
+      case "oldest":
+        return sorted
+          .map((x) => x.product)
+          .sort(
+            (a, b) =>
+              normalizeUnixSeconds(a.created_at ?? a.createdAt ?? 0) -
+              normalizeUnixSeconds(b.created_at ?? b.createdAt ?? 0)
+          );
+      case "name":
+        return sorted
+          .map((x) => x.product)
+          .sort((a, b) => a.name.localeCompare(b.name));
+      default:
+        return sorted.map((x) => x.product);
+    }
+  }, [filteredProducts, sortBy]);
+
+  useEffect(() => {
+    if (filters.search.trim() && sortBy === "newest") {
+      setSortBy("relevance");
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [filters.search]);
+
+  // Pagination
+  const totalPages = Math.ceil(sortedProducts.length / ITEMS_PER_PAGE);
+  const startIndex = (currentPage - 1) * ITEMS_PER_PAGE;
+  const endIndex = startIndex + ITEMS_PER_PAGE;
+  const paginatedProducts = sortedProducts.slice(startIndex, endIndex);
+
+  // Reset to page 1 when filters or sort change
+  useEffect(() => {
+     
+    setCurrentPage(1);
+  }, [filters, sortBy]);
+
+  if (isLoading) {
+    return (
+      <div>
+        <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6 mb-8">
+          {Array.from({ length: 6 }, (_, idx) => (
+            <div
+              key={idx}
+              className="rounded-xl border bg-white shadow overflow-hidden"
+              aria-hidden="true"
+            >
+              <div className="p-6 pb-4">
+                <div className="flex items-start justify-between gap-4">
+                  <div className="flex-1 space-y-2">
+                    <Skeleton className="h-5 w-3/4" />
+                    <Skeleton className="h-4 w-1/2" />
+                  </div>
+                  <Skeleton className="h-6 w-16 rounded-full" />
+                </div>
+              </div>
+              <div className="px-6 pb-4 space-y-3">
+                <Skeleton className="h-4 w-full" />
+                <Skeleton className="h-4 w-5/6" />
+                <Skeleton className="h-4 w-4/6" />
+                <Skeleton className="h-4 w-3/6" />
+              </div>
+              <div className="px-6 pt-4 pb-6 border-t border-zinc-100 flex items-center justify-between gap-3">
+                <Skeleton className="h-6 w-24 rounded-full" />
+                <div className="flex items-center gap-2">
+                  <Skeleton className="h-8 w-24" />
+                  <Skeleton className="h-8 w-16" />
+                </div>
+              </div>
+            </div>
+          ))}
+        </div>
+      </div>
+    );
+  }
+
+  if (sortedProducts.length === 0) {
+    return (
+      <div className="bg-white rounded-lg border border-zinc-200 p-12 text-center">
+        <svg
+          className="w-16 h-16 mx-auto text-zinc-400 mb-4"
+          fill="none"
+          stroke="currentColor"
+          viewBox="0 0 24 24"
+          aria-hidden="true"
+        >
+          <path
+            strokeLinecap="round"
+            strokeLinejoin="round"
+            strokeWidth={2}
+            d="M20 13V6a2 2 0 00-2-2H6a2 2 0 00-2 2v7m16 0v5a2 2 0 01-2 2H6a2 2 0 01-2-2v-5m16 0h-2.586a1 1 0 00-.707.293l-2.414 2.414a1 1 0 01-.707.293h-3.172a1 1 0 01-.707-.293l-2.414-2.414A1 1 0 006.586 13H4"
+          />
+        </svg>
+        <h3 className="text-lg font-semibold text-zinc-900 mb-2">
+          No products found
+        </h3>
+        <p className="text-zinc-600">
+          {filteredProducts.length === 0 && products.length > 0
+            ? "Try adjusting your filters to see more results."
+            : "No products have been registered yet."}
+        </p>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      {/* Sort and results count */}
+      <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between mb-6 gap-4">
+        <p className="text-sm text-zinc-600" aria-live="polite" aria-atomic="true">
+          Showing {startIndex + 1}-{Math.min(endIndex, sortedProducts.length)}{" "}
+          of {sortedProducts.length} product{sortedProducts.length !== 1 ? "s" : ""}
+        </p>
+        <div className="flex items-center gap-2">
+          <label
+            htmlFor="sort"
+            className="text-sm font-medium text-zinc-700 whitespace-nowrap"
+          >
+            Sort by:
+          </label>
+          <select
+            id="sort"
+            value={sortBy}
+            onChange={(e) => setSortBy(e.target.value as SortOption)}
+            className="px-4 py-2 border border-zinc-300 rounded-lg focus:ring-2 focus:ring-blue-500 focus:border-blue-500 outline-none bg-white text-sm"
+          >
+            {filters.search.trim() ? <option value="relevance">Relevance</option> : null}
+            <option value="newest">Newest first</option>
+            <option value="oldest">Oldest first</option>
+            <option value="name">Name (A-Z)</option>
+          </select>
+        </div>
+      </div>
+
+      {/* Product grid */}
+      <div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6 mb-8">
+        {paginatedProducts.map((product) => (
+          <ProductCard key={product.id} product={product} />
+        ))}
+      </div>
+
+      {/* Pagination */}
+      {totalPages > 1 && (
+        <nav aria-label="Product list pagination" className="flex flex-col sm:flex-row items-center justify-center gap-2">
+          <button
+            onClick={() => setCurrentPage((p) => Math.max(1, p - 1))}
+            disabled={currentPage === 1}
+            aria-label="Go to previous page"
+            className="px-4 py-2 border border-zinc-300 rounded-lg disabled:opacity-50 disabled:cursor-not-allowed hover:bg-zinc-50 transition-colors text-sm"
+          >
+            Previous
+          </button>
+          <div className="flex items-center gap-1 flex-wrap justify-center" role="list">
+            {Array.from({ length: totalPages }, (_, i) => i + 1).map((page) => {
+              if (
+                page === 1 ||
+                page === totalPages ||
+                (page >= currentPage - 1 && page <= currentPage + 1)
+              ) {
+                return (
+                  <button
+                    key={page}
+                    onClick={() => setCurrentPage(page)}
+                    aria-label={currentPage === page ? `Page ${page}, current page` : `Go to page ${page}`}
+                    aria-current={currentPage === page ? "page" : undefined}
+                    className={`px-3 py-2 border rounded-lg transition-colors text-sm ${currentPage === page
+                      ? "bg-blue-500 text-white border-blue-500"
+                      : "border-zinc-300 hover:bg-zinc-50"
+                      }`}
+                  >
+                    {page}
+                  </button>
+                );
+              } else if (
+                page === currentPage - 2 ||
+                page === currentPage + 2
+              ) {
+                return (
+                  <span key={page} className="px-2 text-zinc-400 text-sm" aria-hidden="true">
+                    ...
+                  </span>
+                );
+              }
+              return null;
+            })}
+          </div>
+          <button
+            onClick={() => setCurrentPage((p) => Math.min(totalPages, p + 1))}
+            disabled={currentPage === totalPages}
+            aria-label="Go to next page"
+            className="px-4 py-2 border border-zinc-300 rounded-lg disabled:opacity-50 disabled:cursor-not-allowed hover:bg-zinc-50 transition-colors text-sm"
+          >
+            Next
+          </button>
+        </nav>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/products/index.ts b/frontend/components/products/index.ts
new file mode 100644
index 00000000..ed3de613
--- /dev/null
+++ b/frontend/components/products/index.ts
@@ -0,0 +1,3 @@
+export { ProductCard } from "./ProductCard";
+export { ProductList } from "./ProductList";
+export { ProductFilters, type FilterState } from "./ProductFilters";
diff --git a/frontend/components/qr/QRCodeGenerator.tsx b/frontend/components/qr/QRCodeGenerator.tsx
new file mode 100644
index 00000000..1974ccd0
--- /dev/null
+++ b/frontend/components/qr/QRCodeGenerator.tsx
@@ -0,0 +1,150 @@
+"use client";
+
+import React, { useState, useEffect, useRef } from 'react';
+import Image from 'next/image';
+import { generateProductQR, generateProductQRSVG, getVerificationUrl } from '@/lib/qr';
+import { COPY_FEEDBACK_DURATION_MS } from '@/lib/constants';
+
+interface QRCodeGeneratorProps {
+    productId: string;
+}
+
+export default function QRCodeGenerator({ productId }: QRCodeGeneratorProps) {
+    const [qrCodeUrl, setQrCodeUrl] = useState<string>('');
+    const [copied, setCopied] = useState(false);
+    const printRef = useRef<HTMLDivElement>(null);
+
+    useEffect(() => {
+        generateProductQR(productId).then(setQrCodeUrl).catch(console.error);
+    }, [productId]);
+
+    const handleCopyLink = async () => {
+        const url = getVerificationUrl(productId);
+        try {
+            await navigator.clipboard.writeText(url);
+            setCopied(true);
+            setTimeout(() => setCopied(false), COPY_FEEDBACK_DURATION_MS);
+        } catch (err) {
+            console.error('Failed to copy text: ', err);
+        }
+    };
+
+    const handleDownloadPNG = () => {
+        if (!qrCodeUrl) return;
+        const a = document.createElement('a');
+        a.href = qrCodeUrl;
+        a.download = `product-${productId}-qr.png`;
+        document.body.appendChild(a);
+        a.click();
+        document.body.removeChild(a);
+    };
+
+    const handleDownloadSVG = async () => {
+        try {
+            const svgString = await generateProductQRSVG(productId);
+            const blob = new Blob([svgString], { type: 'image/svg+xml;charset=utf-8' });
+            const url = URL.createObjectURL(blob);
+            const a = document.createElement('a');
+            a.href = url;
+            a.download = `product-${productId}-qr.svg`;
+            document.body.appendChild(a);
+            a.click();
+            document.body.removeChild(a);
+            URL.revokeObjectURL(url);
+        } catch (error) {
+            console.error('Failed to download SVG:', error);
+        }
+    };
+
+    const handlePrint = () => {
+        const printContent = printRef.current;
+        if (!printContent) return;
+
+        // Use a lightweight popup approach for printing
+        const popupWin = window.open('', '_blank', 'width=600,height=600');
+        if (popupWin) {
+            popupWin.document.open();
+            popupWin.document.write(`
+        <html>
+          <head>
+            <title>Print QR Code</title>
+            <style>
+              body { font-family: system-ui, -apple-system, sans-serif; display: flex; justify-content: center; align-items: center; min-height: 100vh; margin: 0; background-color: #f9fafb; padding: 20px;}
+              .print-container { text-align: center; border: 2px dashed #d1d5db; padding: 40px; border-radius: 12px; background: white; max-width: 400px; width: 100%; box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1); }
+              img { max-width: 100%; height: auto; margin: 20px auto; display: block; }
+              h2 { margin-top: 0; color: #111827; font-size: 24px; }
+              .id-text { color: #6b7280; font-family: monospace; font-size: 14px; background: #f3f4f6; padding: 6px 12px; border-radius: 6px; display: inline-block; margin-bottom: 20px; word-break: break-all; }
+              .footer { color: #4b5563; font-size: 14px; font-weight: 500; }
+            </style>
+          </head>
+          <body onload="window.print(); window.close();">
+            <div class="print-container">
+              <h2>Product Verification</h2>
+              <div class="id-text">${productId}</div>
+              ${printContent.innerHTML}
+              <p class="footer">Scan to verify authenticity & track origin</p>
+            </div>
+          </body>
+        </html>
+      `);
+            popupWin.document.close();
+        }
+    };
+
+    return (
+        <div className="flex flex-col items-center p-6 bg-white rounded-2xl shadow border border-gray-100 max-w-sm w-full">
+            <h3 className="text-xl font-bold mb-6 text-gray-800">Product QR Code</h3>
+
+            <div className="bg-gray-50 p-6 rounded-xl mb-6 shadow-inner border border-gray-200" ref={printRef}>
+                {qrCodeUrl ? (
+                    <Image 
+                        src={qrCodeUrl} 
+                        alt={`QR Code for ${productId}`} 
+                        width={224} 
+                        height={224} 
+                        className="object-contain block mx-auto mix-blend-multiply"
+                        priority={false}
+                    />
+                ) : (
+                    <div className="w-56 h-56 flex items-center justify-center text-gray-400 font-medium">
+                        <span className="animate-pulse">Generating...</span>
+                    </div>
+                )}
+            </div>
+
+            <div className="flex flex-col gap-3 w-full">
+                <button
+                    onClick={handleCopyLink}
+                    className="flex items-center justify-center px-4 py-2.5 bg-indigo-50 text-indigo-700 font-medium rounded-xl hover:bg-indigo-100 transition-colors focus:ring-2 focus:ring-indigo-200"
+                >
+                    {copied ? 'Link Copied!' : 'Copy Verification Link'}
+                </button>
+
+                <div className="grid grid-cols-2 gap-3">
+                    <button
+                        onClick={handleDownloadPNG}
+                        disabled={!qrCodeUrl}
+                        className="flex items-center justify-center px-4 py-2 bg-gray-100 font-medium text-gray-700 rounded-xl hover:bg-gray-200 transition-colors disabled:opacity-50"
+                    >
+                        Download PNG
+                    </button>
+                    <button
+                        onClick={handleDownloadSVG}
+                        disabled={!qrCodeUrl}
+                        className="flex items-center justify-center px-4 py-2 bg-gray-100 font-medium text-gray-700 rounded-xl hover:bg-gray-200 transition-colors disabled:opacity-50"
+                    >
+                        Download SVG
+                    </button>
+                </div>
+
+                <button
+                    onClick={handlePrint}
+                    disabled={!qrCodeUrl}
+                    className="flex items-center justify-center px-4 py-3 mt-2 bg-gray-900 font-medium text-white shadow-md rounded-xl hover:bg-gray-800 transition-colors disabled:opacity-50 focus:ring-2 focus:ring-gray-300 focus:ring-offset-2"
+                >
+                    Print Shipping Label
+                </button>
+            </div>
+        </div>
+    );
+}
diff --git a/frontend/components/qr/QRScanner.tsx b/frontend/components/qr/QRScanner.tsx
new file mode 100644
index 00000000..80e3ecee
--- /dev/null
+++ b/frontend/components/qr/QRScanner.tsx
@@ -0,0 +1,88 @@
+"use client";
+
+import React, { useEffect, useState } from 'react';
+import { Html5QrcodeScanner, Html5QrcodeSupportedFormats } from 'html5-qrcode';
+import { useRouter } from 'next/navigation';
+
+interface QRScannerProps {
+    onScanSuccess?: (decodedText: string) => void;
+    onScanFailure?: (error: string) => void;
+}
+
+export default function QRScanner({ onScanSuccess, onScanFailure }: QRScannerProps) {
+    const [error, setError] = useState<string | null>(null);
+    const router = useRouter();
+
+    useEffect(() => {
+        // Determine if we are rendering on client-side
+        if (typeof window === 'undefined') return;
+
+        // Use html5-qrcode's scanner
+        const scannerId = "qrcode-reader";
+        const scanner = new Html5QrcodeScanner(
+            scannerId,
+            {
+                fps: 10,
+                qrbox: { width: 250, height: 250 },
+                formatsToSupport: [Html5QrcodeSupportedFormats.QR_CODE],
+                aspectRatio: 1.0,
+            },
+      /* verbose= */ false
+        );
+
+        const defaultSuccess = (decodedText: string) => {
+            // Upon successful scan, we attempt to navigate directly if it's a URL
+            scanner.clear().catch(console.error);
+
+            try {
+                const url = new URL(decodedText);
+                if (url.pathname.includes('/verify/')) {
+                    router.push(url.pathname);
+                } else {
+                    setError('Invalid ChainLogistics QR Code scanned.');
+                }
+            } catch {
+                if (onScanSuccess) {
+                    onScanSuccess(decodedText);
+                } else {
+                    setError(`Invalid QR content: ${decodedText}`);
+                }
+            }
+        };
+
+        scanner.render(
+            (text) => {
+                if (onScanSuccess) {
+                    onScanSuccess(text);
+                } else {
+                    defaultSuccess(text);
+                }
+            },
+            (errorMessage) => {
+                if (onScanFailure) onScanFailure(errorMessage);
+            }
+        );
+
+        return () => {
+            scanner.clear().catch(console.error);
+        };
+    }, [onScanSuccess, onScanFailure, router]);
+
+    return (
+        <div className="w-full max-w-lg mx-auto bg-white p-6 rounded-2xl shadow">
+            <h3 className="text-xl font-bold text-gray-800 mb-4 text-center">Scan Product QR Code</h3>
+            {error && (
+                <div className="mb-4 p-4 bg-red-50 text-red-700 border border-red-200 rounded-xl text-sm font-medium">
+                    {error}
+                </div>
+            )}
+            <div
+                id="qrcode-reader"
+                className="w-full overflow-hidden rounded-xl border border-gray-200"
+            ></div>
+            <p className="mt-4 text-sm text-gray-500 text-center">
+                Point your camera at the QR code to verify product authenticity and track its supply chain history.
+            </p>
+        </div>
+    );
+}
diff --git a/frontend/components/tracking/EventCard.tsx b/frontend/components/tracking/EventCard.tsx
new file mode 100644
index 00000000..bdb2d11c
--- /dev/null
+++ b/frontend/components/tracking/EventCard.tsx
@@ -0,0 +1,63 @@
+"use client";
+
+import type { EventCardProps } from "@/lib/types/tracking";
+import { formatEventTimestamp, getRelativeTime } from "@/lib/contract/events";
+import { shortenPublicKey } from "@/lib/utils/format";
+
+import { EventTypeBadge, getEventTypeBadgeMeta } from "./EventTypeBadge";
+
+export function EventCard({ event, isLast }: Readonly<EventCardProps>) {
+  const meta = getEventTypeBadgeMeta(event.event_type);
+  const Icon = meta.icon;
+
+  return (
+    <div className="relative flex gap-4 sm:gap-6">
+      {/* Timeline line */}
+      <div className="flex flex-col items-center">
+        <div
+          className={`flex h-10 w-10 sm:h-12 sm:w-12 items-center justify-center rounded-full border-2 ${meta.className}`}
+        >
+          <Icon className="h-5 w-5 sm:h-6 sm:w-6" aria-hidden="true" />
+        </div>
+        {!isLast && (
+          <div className="mt-2 h-full w-0.5 bg-gray-200"></div>
+        )}
+      </div>
+
+      {/* Event content */}
+      <div className="flex-1 pb-6 sm:pb-8">
+        <div className="rounded-lg border border-gray-200 bg-white p-4 shadow-sm hover:shadow-md transition-shadow">
+          <div className="flex items-start justify-between">
+            <div className="flex-1 min-w-0">
+              <div className="mb-2 flex flex-col gap-2 sm:flex-row sm:items-center">
+                <EventTypeBadge eventType={event.event_type} size="md" />
+                <span className="text-xs sm:text-sm text-gray-500">
+                  {getRelativeTime(event.timestamp)}
+                </span>
+              </div>
+
+              {event.note && (
+                <p className="mb-3 text-sm text-gray-700 wrap-break-word">{event.note}</p>
+              )}
+
+              <div className="flex flex-col gap-2 sm:flex-row sm:flex-wrap sm:items-center text-xs text-gray-500">
+                <div className="flex items-center gap-1">
+                  <span className="font-medium">Actor:</span>
+                  <span className="font-mono">
+                    {shortenPublicKey(event.actor)}
+                  </span>
+                </div>
+                <div className="flex items-center gap-1">
+                  <span className="font-medium">Time:</span>
+                  <span className="break-all sm:break-normal">
+                    {formatEventTimestamp(event.timestamp)}
+                  </span>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/tracking/EventTypeBadge.tsx b/frontend/components/tracking/EventTypeBadge.tsx
new file mode 100644
index 00000000..0bdca686
--- /dev/null
+++ b/frontend/components/tracking/EventTypeBadge.tsx
@@ -0,0 +1,134 @@
+import * as React from "react";
+import {
+  BadgeCheck,
+  ClipboardPen,
+  Cog,
+  Inbox,
+  Leaf,
+  MapPin,
+  Package,
+  RefreshCw,
+  Truck,
+} from "lucide-react";
+
+import { cn } from "@/lib/utils";
+
+export type EventTypeBadgeSize = "sm" | "md" | "lg";
+
+const EVENT_TYPE_META = {
+  HARVEST: {
+    label: "Harvest",
+    className: "bg-green-50 text-green-800 border-green-200",
+    icon: Leaf,
+  },
+  PROCESS: {
+    label: "Process",
+    className: "bg-blue-50 text-blue-800 border-blue-200",
+    icon: Cog,
+  },
+  PACKAGE: {
+    label: "Package",
+    className: "bg-purple-50 text-purple-800 border-purple-200",
+    icon: Package,
+  },
+  SHIP: {
+    label: "Ship",
+    className: "bg-orange-50 text-orange-800 border-orange-200",
+    icon: Truck,
+  },
+  RECEIVE: {
+    label: "Receive",
+    className: "bg-cyan-50 text-cyan-800 border-cyan-200",
+    icon: Inbox,
+  },
+  QUALITY_CHECK: {
+    label: "Quality Check",
+    className: "bg-yellow-50 text-yellow-900 border-yellow-200",
+    icon: BadgeCheck,
+  },
+  TRANSFER: {
+    label: "Transfer",
+    className: "bg-indigo-50 text-indigo-800 border-indigo-200",
+    icon: RefreshCw,
+  },
+  REGISTER: {
+    label: "Register",
+    className: "bg-gray-50 text-gray-800 border-gray-200",
+    icon: ClipboardPen,
+  },
+  CHECKPOINT: {
+    label: "Checkpoint",
+    className: "bg-pink-50 text-pink-800 border-pink-200",
+    icon: MapPin,
+  },
+} satisfies Record<
+  string,
+  {
+    label: string;
+    className: string;
+    icon: React.ComponentType<React.SVGProps<SVGSVGElement>>;
+  }
+>;
+
+export function getEventTypeBadgeMeta(eventType: string) {
+  return (
+    EVENT_TYPE_META[eventType as keyof typeof EVENT_TYPE_META] ||
+    EVENT_TYPE_META.REGISTER
+  );
+}
+
+const SIZE_STYLES: Record<
+  EventTypeBadgeSize,
+  { container: string; icon: string; label: string }
+> = {
+  sm: {
+    container: "h-5 px-2 text-[11px]",
+    icon: "h-3.5 w-3.5",
+    label: "leading-4",
+  },
+  md: {
+    container: "h-6 px-2.5 text-xs",
+    icon: "h-4 w-4",
+    label: "leading-5",
+  },
+  lg: {
+    container: "h-7 px-3 text-sm",
+    icon: "h-5 w-5",
+    label: "leading-6",
+  },
+};
+
+export interface EventTypeBadgeProps extends React.HTMLAttributes<HTMLSpanElement> {
+  eventType: string;
+  size?: EventTypeBadgeSize;
+  label?: string;
+}
+
+export function EventTypeBadge({
+  eventType,
+  size = "md",
+  label,
+  className,
+  ...props
+}: Readonly<EventTypeBadgeProps>) {
+  const meta = getEventTypeBadgeMeta(eventType);
+
+  const Icon = meta.icon;
+  const resolvedLabel = label ?? meta.label;
+  const sizeStyles = SIZE_STYLES[size];
+
+  return (
+    <span
+      className={cn(
+        "inline-flex items-center gap-1.5 rounded-full border font-semibold",
+        meta.className,
+        sizeStyles.container,
+        className
+      )}
+      {...props}
+    >
+      <Icon className={cn("shrink-0", sizeStyles.icon)} aria-hidden="true" />
+      <span className={cn("whitespace-nowrap", sizeStyles.label)}>{resolvedLabel}</span>
+    </span>
+  );
+}
diff --git a/frontend/components/tracking/RealtimeEventListener.tsx b/frontend/components/tracking/RealtimeEventListener.tsx
new file mode 100644
index 00000000..83540d37
--- /dev/null
+++ b/frontend/components/tracking/RealtimeEventListener.tsx
@@ -0,0 +1,75 @@
+'use client';
+
+import React, { useEffect, useState } from 'react';
+import { WebSocketClient } from '@/lib/websocket/client';
+import { Card } from '@/components/ui/card';
+import { Badge } from '@/components/ui/badge';
+
+interface RealtimeEvent {
+  id: string;
+  product_id: string;
+  event_type: string;
+  location: string;
+  timestamp: number;
+  data: Record<string, unknown>;
+}
+
+interface RealtimeEventListenerProps {
+  productId?: string;
+}
+
+export function RealtimeEventListener({ productId }: RealtimeEventListenerProps) {
+  const [events, setEvents] = useState<RealtimeEvent[]>([]);
+  const [connected, setConnected] = useState(false);
+
+  useEffect(() => {
+    const wsUrl = `${process.env.NEXT_PUBLIC_WS_URL || 'ws://localhost:3001'}/ws`;
+    const client = new WebSocketClient(wsUrl);
+
+    client.connect().then(() => {
+      setConnected(true);
+
+      // Subscribe to product events
+      const channel = productId ? `product:${productId}` : 'events:all';
+      client.subscribe(channel, (data: Record<string, unknown>) => {
+        setEvents((prev) => [data as unknown as RealtimeEvent, ...prev].slice(0, 50)); // Keep last 50 events
+      });
+    });
+
+    return () => {
+      client.disconnect();
+    };
+  }, [productId]);
+
+  return (
+    <div className="space-y-4">
+      <div className="flex items-center justify-between">
+        <h2 className="text-2xl font-bold">Real-time Events</h2>
+        <Badge variant={connected ? 'default' : 'secondary'}>
+          {connected ? 'Connected' : 'Disconnected'}
+        </Badge>
+      </div>
+
+      {events.length === 0 ? (
+        <p className="text-gray-500">Waiting for events...</p>
+      ) : (
+        <div className="space-y-2">
+          {events.map((event) => (
+            <Card key={event.id} className="p-4">
+              <div className="flex justify-between items-start">
+                <div>
+                  <p className="font-semibold">{event.event_type}</p>
+                  <p className="text-sm text-gray-600">{event.location}</p>
+                  <p className="text-xs text-gray-500 mt-1">
+                    {new Date(event.timestamp).toLocaleString()}
+                  </p>
+                </div>
+                <Badge variant="outline">{event.product_id.slice(0, 8)}</Badge>
+              </div>
+            </Card>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/tracking/Timeline.test.tsx b/frontend/components/tracking/Timeline.test.tsx
new file mode 100644
index 00000000..b48c647f
--- /dev/null
+++ b/frontend/components/tracking/Timeline.test.tsx
@@ -0,0 +1,205 @@
+import { render, screen, waitFor, fireEvent } from '@testing-library/react';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { Timeline } from './Timeline';
+import { fetchProductEventsPage } from '@/lib/contract/events';
+import type { TimelineEvent } from '@/lib/types/tracking';
+
+// Mock the events module
+vi.mock('@/lib/contract/events', () => ({
+  fetchProductEventsPage: vi.fn(),
+  getRelativeTime: vi.fn((ts: number) => `${Math.floor((Date.now() / 1000 - ts) / 86400)} days ago`),
+  formatEventTimestamp: vi.fn((ts: number) => new Date(ts * 1000).toLocaleString()),
+}));
+
+const mockFetchProductEventsPage = vi.mocked(fetchProductEventsPage);
+
+const mockEvents: TimelineEvent[] = [
+  {
+    event_id: 1,
+    product_id: 'prod-123',
+    actor: 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7',
+    event_type: 'HARVEST',
+    timestamp: Math.floor(Date.now() / 1000) - 86400 * 3, // 3 days ago
+    note: 'Harvested coffee cherries',
+  },
+  {
+    event_id: 2,
+    product_id: 'prod-123',
+    actor: 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7',
+    event_type: 'SHIP',
+    timestamp: Math.floor(Date.now() / 1000) - 86400 * 2, // 2 days ago
+    note: 'Washed and dried',
+  },
+  {
+    event_id: 3,
+    product_id: 'prod-123',
+    actor: 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7',
+    event_type: 'RECEIVE',
+    timestamp: Math.floor(Date.now() / 1000) - 86400, // 1 day ago
+    note: 'Shipped to destination',
+  },
+];
+
+describe('Timeline component', () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('should show loading skeleton initially', () => {
+    mockFetchProductEventsPage.mockImplementation(() => new Promise(() => {})); // Never resolves
+
+    render(<Timeline productId="prod-123" />);
+
+    expect(screen.getByTestId('timeline-skeleton')).toBeInTheDocument();
+  });
+
+  it('should display events after loading', async () => {
+    mockFetchProductEventsPage.mockResolvedValue({
+      events: mockEvents,
+      total: 3,
+      offset: 0,
+      limit: 20,
+      hasMore: false,
+    });
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      expect(screen.getByText('Harvest')).toBeInTheDocument();
+      expect(screen.getByText('Ship')).toBeInTheDocument();
+      expect(screen.getByText('Receive')).toBeInTheDocument();
+    });
+  });
+
+  it('should display error message when fetch fails', async () => {
+    mockFetchProductEventsPage.mockRejectedValue(new Error('Network error'));
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      expect(screen.getByText(/failed to load events/i)).toBeInTheDocument();
+      expect(screen.getByText(/network error/i)).toBeInTheDocument();
+    });
+  });
+
+  it('should show empty state when no events exist', async () => {
+    mockFetchProductEventsPage.mockResolvedValue({
+      events: [],
+      total: 0,
+      offset: 0,
+      limit: 20,
+      hasMore: false,
+    });
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      expect(screen.getByText(/no tracking events yet/i)).toBeInTheDocument();
+    });
+  });
+
+  it('should call fetch with correct parameters', async () => {
+    mockFetchProductEventsPage.mockResolvedValue({
+      events: mockEvents,
+      total: 3,
+      offset: 0,
+      limit: 20,
+      hasMore: false,
+    });
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      expect(mockFetchProductEventsPage).toHaveBeenCalledWith('prod-123', {
+        offset: 0,
+        limit: 20,
+      });
+    });
+  });
+
+  it('should show load more button when hasMore is true', async () => {
+    mockFetchProductEventsPage.mockResolvedValue({
+      events: mockEvents.slice(0, 2),
+      total: 3,
+      offset: 0,
+      limit: 20,
+      hasMore: true,
+    });
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      expect(screen.getByRole('button', { name: /load more/i })).toBeInTheDocument();
+    });
+  });
+
+  it('should load more events when button is clicked', async () => {
+    mockFetchProductEventsPage
+      .mockResolvedValueOnce({
+        events: mockEvents.slice(0, 2),
+        total: 3,
+        offset: 0,
+        limit: 20,
+        hasMore: true,
+      })
+      .mockResolvedValueOnce({
+        events: mockEvents.slice(2),
+        total: 3,
+        offset: 2,
+        limit: 20,
+        hasMore: false,
+      });
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      expect(screen.getByRole('button', { name: /load more/i })).toBeInTheDocument();
+    });
+
+    fireEvent.click(screen.getByRole('button', { name: /load more/i }));
+
+    await waitFor(() => {
+      expect(mockFetchProductEventsPage).toHaveBeenCalledTimes(2);
+      expect(mockFetchProductEventsPage).toHaveBeenLastCalledWith('prod-123', {
+        offset: 2,
+        limit: 20,
+      });
+    });
+  });
+
+  it('should have retry button when error occurs', async () => {
+    mockFetchProductEventsPage.mockRejectedValueOnce(new Error('Network error'));
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      const retryButton = screen.getByRole('button', { name: /retry/i });
+      expect(retryButton).toBeInTheDocument();
+    });
+  });
+
+  it('should retry loading when retry button is clicked', async () => {
+    mockFetchProductEventsPage
+      .mockRejectedValueOnce(new Error('Network error'))
+      .mockResolvedValueOnce({
+        events: mockEvents,
+        total: 3,
+        offset: 0,
+        limit: 20,
+        hasMore: false,
+      });
+
+    render(<Timeline productId="prod-123" />);
+
+    await waitFor(() => {
+      const retryButton = screen.getByRole('button', { name: /retry/i });
+      expect(retryButton).toBeInTheDocument();
+    });
+
+    fireEvent.click(screen.getByRole('button', { name: /retry/i }));
+
+    await waitFor(() => {
+      expect(mockFetchProductEventsPage).toHaveBeenCalledTimes(2);
+    });
+  });
+});
diff --git a/frontend/components/tracking/Timeline.tsx b/frontend/components/tracking/Timeline.tsx
new file mode 100644
index 00000000..f5ebe446
--- /dev/null
+++ b/frontend/components/tracking/Timeline.tsx
@@ -0,0 +1,174 @@
+"use client";
+
+import { useCallback, useEffect, useState } from "react";
+import type { TimelineEvent } from "@/lib/types/tracking";
+import { fetchProductEventsPage } from "@/lib/contract/events";
+import { EventCard } from "./EventCard";
+
+interface TimelineProps {
+  productId: string;
+}
+
+export function Timeline({ productId }: Readonly<TimelineProps>) {
+  const PAGE_SIZE = 20;
+  const [events, setEvents] = useState<TimelineEvent[]>([]);
+  const [loading, setLoading] = useState(true);
+  const [loadingMore, setLoadingMore] = useState(false);
+  const [error, setError] = useState<string | null>(null);
+  const [offset, setOffset] = useState(0);
+  const [hasMore, setHasMore] = useState(false);
+
+  const loadEvents = useCallback(async () => {
+    try {
+      setLoading(true);
+      setError(null);
+      const firstPage = await fetchProductEventsPage(productId, {
+        offset: 0,
+        limit: PAGE_SIZE,
+      });
+      setEvents(firstPage.events);
+      setOffset(firstPage.offset + firstPage.events.length);
+      setHasMore(firstPage.hasMore);
+    } catch (err) {
+      setError(
+        err instanceof Error
+          ? err.message
+          : "Failed to load events. Please check your connection and try again."
+      );
+    } finally {
+      setLoading(false);
+    }
+  }, [productId, PAGE_SIZE]);
+
+  const loadMore = useCallback(async () => {
+    try {
+      setLoadingMore(true);
+      const nextPage = await fetchProductEventsPage(productId, {
+        offset,
+        limit: PAGE_SIZE,
+      });
+      setEvents((prev) => [...prev, ...nextPage.events]);
+      setOffset(nextPage.offset + nextPage.events.length);
+      setHasMore(nextPage.hasMore);
+    } catch (err) {
+      setError(
+        err instanceof Error
+          ? err.message
+          : "Failed to load more events. Please try again."
+      );
+    } finally {
+      setLoadingMore(false);
+    }
+  }, [productId, offset, PAGE_SIZE]);
+
+  useEffect(() => {
+    // Use setTimeout to avoid calling setState synchronously in effect
+    const timeoutId = setTimeout(() => {
+      loadEvents();
+    }, 0);
+    
+    return () => clearTimeout(timeoutId);
+  }, [loadEvents]);
+
+  if (loading) {
+    return <TimelineSkeleton />;
+  }
+
+  if (error) {
+    return (
+      <div className="rounded-lg border border-red-200 bg-red-50 p-6 text-center">
+        <p className="text-sm font-medium text-red-800">
+          Failed to load events
+        </p>
+        <p className="mt-1 text-xs text-red-600">{error}</p>
+        <div className="mt-4">
+          <button
+            type="button"
+            onClick={loadEvents}
+            disabled={loading}
+            className="px-4 py-2 rounded-lg bg-red-600 text-white text-sm font-semibold hover:bg-red-700 disabled:opacity-50"
+          >
+            Retry
+          </button>
+        </div>
+      </div>
+    );
+  }
+
+  if (events.length === 0) {
+    return (
+      <div className="rounded-lg border border-gray-200 bg-gray-50 p-12 text-center">
+        <div className="mx-auto mb-4 flex h-16 w-16 items-center justify-center rounded-full bg-gray-100">
+          <svg
+            className="h-8 w-8 text-gray-400"
+            fill="none"
+            viewBox="0 0 24 24"
+            stroke="currentColor"
+          >
+            <path
+              strokeLinecap="round"
+              strokeLinejoin="round"
+              strokeWidth={2}
+              d="M12 8v4l3 3m6-3a9 9 0 11-18 0 9 9 0 0118 0z"
+            />
+          </svg>
+        </div>
+        <h3 className="text-sm font-semibold text-gray-900">
+          No tracking events yet
+        </h3>
+        <p className="mt-1 text-sm text-gray-500">
+          Events will appear here as the product moves through the supply chain.
+        </p>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      <div className="space-y-0">
+        {events.map((event, index) => (
+          <EventCard
+            key={event.event_id}
+            event={event}
+            isFirst={index === 0}
+            isLast={index === events.length - 1}
+          />
+        ))}
+      </div>
+      {hasMore ? (
+        <div className="mt-4 flex justify-center">
+          <button
+            type="button"
+            onClick={loadMore}
+            disabled={loadingMore}
+            className="rounded-lg border border-gray-300 bg-white px-4 py-2 text-sm font-semibold text-gray-700 hover:bg-gray-50 disabled:cursor-not-allowed disabled:opacity-50"
+          >
+            {loadingMore ? "Loading..." : "Load more"}
+          </button>
+        </div>
+      ) : null}
+    </div>
+  );
+}
+
+function TimelineSkeleton() {
+  return (
+    <div className="space-y-0" data-testid="timeline-skeleton">
+      {[1, 2, 3].map((i) => (
+        <div key={i} className="relative flex gap-4 sm:gap-6">
+          <div className="flex flex-col items-center">
+            <div className="h-10 w-10 sm:h-12 sm:w-12 animate-pulse rounded-full bg-gray-200"></div>
+            {i < 3 && <div className="mt-2 h-full w-0.5 bg-gray-200"></div>}
+          </div>
+          <div className="flex-1 pb-6 sm:pb-8">
+            <div className="animate-pulse rounded-lg border border-gray-200 bg-white p-4">
+              <div className="mb-2 h-4 w-32 rounded bg-gray-200"></div>
+              <div className="mb-3 h-3 w-full rounded bg-gray-200"></div>
+              <div className="h-3 w-48 rounded bg-gray-200"></div>
+            </div>
+          </div>
+        </div>
+      ))}
+    </div>
+  );
+}
diff --git a/frontend/components/tracking/index.ts b/frontend/components/tracking/index.ts
new file mode 100644
index 00000000..8866ba79
--- /dev/null
+++ b/frontend/components/tracking/index.ts
@@ -0,0 +1,3 @@
+export { Timeline } from "./Timeline";
+export { EventCard } from "./EventCard";
+export type { TimelineEvent, EventCardProps } from "@/lib/types/tracking";
diff --git a/frontend/components/ui/Button.test.tsx b/frontend/components/ui/Button.test.tsx
new file mode 100644
index 00000000..2043dec2
--- /dev/null
+++ b/frontend/components/ui/Button.test.tsx
@@ -0,0 +1,35 @@
+import { render, screen, fireEvent } from '@testing-library/react';
+import { describe, it, expect, vi } from 'vitest';
+import { Button } from './button'; // Note: matches lowercase filename
+
+describe('Button component', () => {
+  it('should render correctly with default props', () => {
+    render(<Button>Click me</Button>);
+    const button = screen.getByRole('button', { name: /click me/i });
+    expect(button).toBeInTheDocument();
+    expect(button).toHaveClass('bg-primary');
+  });
+
+  it('should apply the destructive variant classes', () => {
+    render(<Button variant="destructive">Delete</Button>);
+    const button = screen.getByRole('button', { name: /delete/i });
+    expect(button).toHaveClass('bg-destructive');
+  });
+
+  it('should handle onClick events', () => {
+    const handleClick = vi.fn();
+    render(<Button onClick={handleClick}>Click me</Button>);
+    const button = screen.getByRole('button', { name: /click me/i });
+    fireEvent.click(button);
+    expect(handleClick).toHaveBeenCalledTimes(1);
+  });
+
+  it('should be disabled when disabled prop is true', () => {
+    const handleClick = vi.fn();
+    render(<Button disabled onClick={handleClick}>Disabled</Button>);
+    const button = screen.getByRole('button', { name: /disabled/i });
+    expect(button).toBeDisabled();
+    fireEvent.click(button);
+    expect(handleClick).not.toHaveBeenCalled();
+  });
+});
diff --git a/frontend/components/ui/EmptyState.tsx b/frontend/components/ui/EmptyState.tsx
new file mode 100644
index 00000000..504139ec
--- /dev/null
+++ b/frontend/components/ui/EmptyState.tsx
@@ -0,0 +1,119 @@
+import * as React from "react";
+import { cva, type VariantProps } from "class-variance-authority";
+
+import { cn } from "@/lib/utils";
+import { Button } from "@/components/ui/button";
+
+const emptyStateVariants = cva(
+  "w-full flex flex-col items-center justify-center text-center",
+  {
+    variants: {
+      variant: {
+        default: "rounded-xl border border-dashed bg-muted/20",
+        card: "rounded-xl border bg-card",
+        subtle: "rounded-xl",
+      },
+      size: {
+        sm: "px-4 py-8",
+        md: "px-6 py-12",
+        lg: "px-8 py-16",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "md",
+    },
+  }
+);
+
+export type EmptyStateCta = {
+  label: string;
+  onClick?: () => void;
+  href?: string;
+  target?: React.HTMLAttributeAnchorTarget;
+  rel?: string;
+  variant?: React.ComponentProps<typeof Button>["variant"];
+  size?: React.ComponentProps<typeof Button>["size"];
+  disabled?: boolean;
+};
+
+export interface EmptyStateProps
+  extends Omit<React.HTMLAttributes<HTMLDivElement>, "title">,
+    VariantProps<typeof emptyStateVariants> {
+  illustration?: React.ReactNode;
+  icon?: React.ReactNode;
+  title: React.ReactNode;
+  description?: React.ReactNode;
+  cta?: EmptyStateCta;
+}
+
+export function EmptyState({
+  className,
+  variant,
+  size,
+  illustration,
+  icon,
+  title,
+  description,
+  cta,
+  ...props
+}: Readonly<EmptyStateProps>) {
+  const visual = illustration ?? icon;
+
+  return (
+    <div
+      className={cn(emptyStateVariants({ variant, size }), className)}
+      {...props}
+    >
+      {visual ? (
+        <div className="mb-4 flex items-center justify-center">
+          <div className="text-muted-foreground [&_svg]:h-12 [&_svg]:w-12">
+            {visual}
+          </div>
+        </div>
+      ) : null}
+
+      <div className="max-w-[42rem]">
+        <div className="text-base font-semibold leading-tight tracking-tight">
+          {title}
+        </div>
+        {description ? (
+          <div className="mt-2 text-sm text-muted-foreground">
+            {description}
+          </div>
+        ) : null}
+
+        {cta ? (
+          <div className="mt-5 flex items-center justify-center">
+            {cta.href ? (
+              <Button
+                asChild
+                variant={cta.variant ?? "default"}
+                size={cta.size ?? "default"}
+                disabled={cta.disabled}
+              >
+                <a
+                  href={cta.href}
+                  target={cta.target}
+                  rel={cta.rel ?? (cta.target === "_blank" ? "noreferrer" : undefined)}
+                >
+                  {cta.label}
+                </a>
+              </Button>
+            ) : (
+              <Button
+                type="button"
+                onClick={cta.onClick}
+                variant={cta.variant ?? "default"}
+                size={cta.size ?? "default"}
+                disabled={cta.disabled}
+              >
+                {cta.label}
+              </Button>
+            )}
+          </div>
+        ) : null}
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/ui/InlineErrorState.test.tsx b/frontend/components/ui/InlineErrorState.test.tsx
new file mode 100644
index 00000000..9d160fd1
--- /dev/null
+++ b/frontend/components/ui/InlineErrorState.test.tsx
@@ -0,0 +1,75 @@
+import { render, screen, fireEvent } from "@testing-library/react";
+import { describe, it, expect, vi } from "vitest";
+import { InlineErrorState } from "./InlineErrorState";
+
+describe("InlineErrorState component", () => {
+  it("renders the title and message", () => {
+    render(<InlineErrorState title="Something went wrong" message="Please try again later." />);
+    expect(screen.getByText("Something went wrong")).toBeInTheDocument();
+    expect(screen.getByText("Please try again later.")).toBeInTheDocument();
+  });
+
+  it("has role=alert for screen reader announcements", () => {
+    render(<InlineErrorState title="Error" message="An error occurred." />);
+    expect(screen.getByRole("alert")).toBeInTheDocument();
+  });
+
+  it("renders retry button when canRetry and onRetry are provided", () => {
+    const onRetry = vi.fn();
+    render(
+      <InlineErrorState
+        title="Network Error"
+        message="Failed to load."
+        canRetry
+        onRetry={onRetry}
+      />
+    );
+    const button = screen.getByRole("button", { name: /try again/i });
+    expect(button).toBeInTheDocument();
+    fireEvent.click(button);
+    expect(onRetry).toHaveBeenCalledTimes(1);
+  });
+
+  it("does not render retry button when canRetry is false", () => {
+    render(<InlineErrorState title="Error" message="Failed." canRetry={false} />);
+    expect(screen.queryByRole("button")).not.toBeInTheDocument();
+  });
+
+  it("renders recovery steps when provided", () => {
+    render(
+      <InlineErrorState
+        title="Wallet Error"
+        message="Could not connect."
+        recoverySteps={["Check your wallet extension", "Try reconnecting"]}
+      />
+    );
+    expect(screen.getByText("Check your wallet extension")).toBeInTheDocument();
+    expect(screen.getByText("Try reconnecting")).toBeInTheDocument();
+  });
+
+  it("renders optional detail when provided", () => {
+    render(
+      <InlineErrorState
+        title="Error"
+        message="Failed."
+        detail="Raw error: timeout after 30s"
+      />
+    );
+    expect(screen.getByText(/Raw error: timeout/)).toBeInTheDocument();
+  });
+
+  it("disables retry button while isRetrying", () => {
+    const onRetry = vi.fn();
+    render(
+      <InlineErrorState
+        title="Error"
+        message="Failed."
+        canRetry
+        onRetry={onRetry}
+        isRetrying
+      />
+    );
+    const button = screen.getByRole("button", { name: /try again/i });
+    expect(button).toBeDisabled();
+  });
+});
diff --git a/frontend/components/ui/InlineErrorState.tsx b/frontend/components/ui/InlineErrorState.tsx
new file mode 100644
index 00000000..0b1d5697
--- /dev/null
+++ b/frontend/components/ui/InlineErrorState.tsx
@@ -0,0 +1,143 @@
+"use client";
+
+import * as React from "react";
+import { AlertCircle, AlertTriangle, WifiOff, Wallet, RefreshCw, Info } from "lucide-react";
+import { cn } from "@/lib/utils";
+import { Button } from "@/components/ui/button";
+import { type ErrorCategory } from "@/lib/errors";
+
+export type InlineErrorVariant = "error" | "warning" | "info";
+
+export interface InlineErrorStateProps {
+  /** Short headline shown in bold */
+  title: string;
+  /** Detailed message providing context */
+  message: string;
+  /** Optional extra detail (e.g., raw error message for devs) */
+  detail?: string;
+  /** Visual severity level */
+  variant?: InlineErrorVariant;
+  /** Error category drives the icon selection */
+  category?: ErrorCategory;
+  /** List of recovery steps to display */
+  recoverySteps?: string[];
+  /** When true a "Try again" button is rendered */
+  canRetry?: boolean;
+  /** Called when the retry button is clicked */
+  onRetry?: () => void;
+  /** Label for the retry button */
+  retryLabel?: string;
+  /** Whether the retry action is currently in progress */
+  isRetrying?: boolean;
+  className?: string;
+}
+
+const variantStyles: Record<InlineErrorVariant, string> = {
+  error: "border-red-200 bg-red-50 text-red-900",
+  warning: "border-amber-200 bg-amber-50 text-amber-900",
+  info: "border-blue-200 bg-blue-50 text-blue-900",
+};
+
+const retryButtonStyles: Record<InlineErrorVariant, string> = {
+  error: "bg-red-600 text-white hover:bg-red-700 focus-visible:ring-red-500",
+  warning: "bg-amber-600 text-white hover:bg-amber-700 focus-visible:ring-amber-500",
+  info: "bg-blue-600 text-white hover:bg-blue-700 focus-visible:ring-blue-500",
+};
+
+function CategoryIcon({
+  category,
+  variant,
+  className,
+}: {
+  category: ErrorCategory | undefined;
+  variant: InlineErrorVariant;
+  className?: string;
+}) {
+  const iconClass = cn("h-5 w-5 flex-shrink-0", className);
+
+  switch (category) {
+    case "network":
+      return <WifiOff className={iconClass} aria-hidden="true" />;
+    case "wallet":
+      return <Wallet className={iconClass} aria-hidden="true" />;
+    case "validation":
+      return <Info className={iconClass} aria-hidden="true" />;
+    default:
+      return variant === "warning"
+        ? <AlertTriangle className={iconClass} aria-hidden="true" />
+        : <AlertCircle className={iconClass} aria-hidden="true" />;
+  }
+}
+
+/**
+ * A consistent inline error/warning/info banner for async data-fetch or form
+ * submission failures. Pairs naturally with the class-based `ErrorBoundary`
+ * which handles React render-time errors.
+ */
+export function InlineErrorState({
+  title,
+  message,
+  detail,
+  variant = "error",
+  category,
+  recoverySteps,
+  canRetry = false,
+  onRetry,
+  retryLabel = "Try again",
+  isRetrying = false,
+  className,
+}: Readonly<InlineErrorStateProps>) {
+  const styles = variantStyles[variant];
+
+  return (
+    <div
+      role="alert"
+      aria-live="assertive"
+      className={cn("rounded-xl border p-5", styles, className)}
+    >
+      <div className="flex items-start gap-3">
+        <CategoryIcon category={category} variant={variant} />
+
+        <div className="min-w-0 flex-1">
+          <p className="text-sm font-semibold leading-snug">{title}</p>
+          <p className="mt-1 text-sm opacity-80">{message}</p>
+
+          {detail && (
+            <p className="mt-1 font-mono text-xs opacity-60 break-all">{detail}</p>
+          )}
+
+          {recoverySteps && recoverySteps.length > 0 && (
+            <ul className="mt-3 space-y-1 text-xs opacity-70">
+              {recoverySteps.map((step, idx) => (
+                <li key={idx} className="flex items-start gap-1.5">
+                  <span className="mt-1 block h-1 w-1 flex-shrink-0 rounded-full bg-current" />
+                  {step}
+                </li>
+              ))}
+            </ul>
+          )}
+
+          {canRetry && onRetry && (
+            <div className="mt-4">
+              <Button
+                type="button"
+                size="sm"
+                disabled={isRetrying}
+                onClick={onRetry}
+                className={cn(
+                  "inline-flex items-center gap-1.5 rounded-lg px-3 py-1.5 text-xs font-semibold",
+                  retryButtonStyles[variant]
+                )}
+              >
+                {isRetrying && (
+                  <RefreshCw className="h-3.5 w-3.5 animate-spin" aria-hidden="true" />
+                )}
+                {retryLabel}
+              </Button>
+            </div>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/ui/Pagination.tsx b/frontend/components/ui/Pagination.tsx
new file mode 100644
index 00000000..94befeef
--- /dev/null
+++ b/frontend/components/ui/Pagination.tsx
@@ -0,0 +1,245 @@
+"use client";
+
+import * as React from "react";
+
+import { cn } from "@/lib/utils";
+import { Button } from "@/components/ui/button";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "@/components/ui/select";
+
+type PaginationItem = number | "ellipsis";
+
+function clamp(value: number, min: number, max: number) {
+  return Math.min(max, Math.max(min, value));
+}
+
+function range(start: number, end: number) {
+  const result: number[] = [];
+  for (let i = start; i <= end; i += 1) result.push(i);
+  return result;
+}
+
+function getPaginationItems(params: {
+  page: number;
+  totalPages: number;
+  siblingCount: number;
+  boundaryCount: number;
+}): PaginationItem[] {
+  const { page, totalPages, siblingCount, boundaryCount } = params;
+
+  if (totalPages <= 0) return [];
+
+  const safePage = clamp(page, 1, totalPages);
+
+  const totalNumbers = boundaryCount * 2 + siblingCount * 2 + 1;
+  const totalBlocks = totalNumbers + 2; // 2 for ellipsis
+
+  // If the number of pages is small, show all pages.
+  if (totalPages <= totalBlocks) {
+    return range(1, totalPages);
+  }
+
+  const leftSiblingIndex = Math.max(safePage - siblingCount, boundaryCount + 2);
+  const rightSiblingIndex = Math.min(
+    safePage + siblingCount,
+    totalPages - boundaryCount - 1
+  );
+
+  const showLeftEllipsis = leftSiblingIndex > boundaryCount + 2;
+  const showRightEllipsis = rightSiblingIndex < totalPages - boundaryCount - 1;
+
+  const firstPages = range(1, boundaryCount);
+  const lastPages = range(totalPages - boundaryCount + 1, totalPages);
+
+  if (!showLeftEllipsis && showRightEllipsis) {
+    // No left ellipsis, but right ellipsis
+    const leftItemCount = boundaryCount + 1 + 2 * siblingCount;
+    const leftRange = range(1, leftItemCount);
+    return [...leftRange, "ellipsis", ...lastPages];
+  }
+
+  if (showLeftEllipsis && !showRightEllipsis) {
+    // Left ellipsis, but no right ellipsis
+    const rightItemCount = boundaryCount + 1 + 2 * siblingCount;
+    const rightRange = range(totalPages - rightItemCount + 1, totalPages);
+    return [...firstPages, "ellipsis", ...rightRange];
+  }
+
+  // Both left and right ellipsis
+  const middleRange = range(leftSiblingIndex, rightSiblingIndex);
+  return [...firstPages, "ellipsis", ...middleRange, "ellipsis", ...lastPages];
+}
+
+export type PaginationProps = {
+  page: number;
+  totalPages?: number;
+  totalItems?: number;
+  pageSize?: number;
+  pageSizeOptions?: number[];
+  siblingCount?: number;
+  boundaryCount?: number;
+  onPageChange: (page: number) => void;
+  onPageSizeChange?: (pageSize: number) => void;
+  className?: string;
+  disabled?: boolean;
+  showPageSizeSelector?: boolean;
+  pageSizeLabel?: string;
+};
+
+export function Pagination({
+  page,
+  totalPages: totalPagesProp,
+  totalItems,
+  pageSize,
+  pageSizeOptions = [10, 20, 50, 100],
+  siblingCount = 1,
+  boundaryCount = 1,
+  onPageChange,
+  onPageSizeChange,
+  className,
+  disabled = false,
+  showPageSizeSelector = true,
+  pageSizeLabel = "Rows per page",
+}: PaginationProps) {
+  const computedTotalPages = React.useMemo(() => {
+    if (typeof totalPagesProp === "number") return totalPagesProp;
+    if (typeof totalItems === "number" && typeof pageSize === "number" && pageSize > 0) {
+      return Math.max(1, Math.ceil(totalItems / pageSize));
+    }
+    return 1;
+  }, [totalPagesProp, totalItems, pageSize]);
+
+  const totalPages = Math.max(1, computedTotalPages);
+  const safePage = clamp(page, 1, totalPages);
+
+  const canGoPrev = safePage > 1;
+  const canGoNext = safePage < totalPages;
+
+  const items = React.useMemo(
+    () =>
+      getPaginationItems({
+        page: safePage,
+        totalPages,
+        siblingCount,
+        boundaryCount,
+      }),
+    [safePage, totalPages, siblingCount, boundaryCount]
+  );
+
+  const handlePrev = () => {
+    if (disabled || !canGoPrev) return;
+    onPageChange(safePage - 1);
+  };
+
+  const handleNext = () => {
+    if (disabled || !canGoNext) return;
+    onPageChange(safePage + 1);
+  };
+
+  const handlePageClick = (targetPage: number) => {
+    if (disabled) return;
+    if (targetPage === safePage) return;
+    onPageChange(targetPage);
+  };
+
+  const showSizeSelector =
+    showPageSizeSelector && typeof pageSize === "number" && !!onPageSizeChange;
+
+  return (
+    <div
+      className={cn(
+        "flex flex-col gap-3 sm:flex-row sm:items-center sm:justify-between",
+        className
+      )}
+    >
+      <nav aria-label="Pagination" className="w-full">
+        <ul className="flex flex-wrap items-center justify-center gap-1">
+          <li>
+            <Button
+              type="button"
+              variant="outline"
+              size="sm"
+              onClick={handlePrev}
+              disabled={disabled || !canGoPrev}
+              aria-label="Go to previous page"
+            >
+              Previous
+            </Button>
+          </li>
+
+          {items.map((item: PaginationItem, idx: number) => {
+            if (item === "ellipsis") {
+              return (
+                <li key={`ellipsis-${idx}`} aria-hidden="true">
+                  <span className="px-2 text-sm text-muted-foreground">…</span>
+                </li>
+              );
+            }
+
+            const isActive = item === safePage;
+
+            return (
+              <li key={item}>
+                <Button
+                  type="button"
+                  variant={isActive ? "default" : "outline"}
+                  size="sm"
+                  onClick={() => handlePageClick(item)}
+                  disabled={disabled}
+                  aria-current={isActive ? "page" : undefined}
+                  aria-label={isActive ? `Page ${item}, current page` : `Go to page ${item}`}
+                >
+                  {item}
+                </Button>
+              </li>
+            );
+          })}
+
+          <li>
+            <Button
+              type="button"
+              variant="outline"
+              size="sm"
+              onClick={handleNext}
+              disabled={disabled || !canGoNext}
+              aria-label="Go to next page"
+            >
+              Next
+            </Button>
+          </li>
+        </ul>
+      </nav>
+
+      {showSizeSelector && (
+        <div className="flex items-center justify-center gap-2 sm:justify-end">
+          <span className="text-sm text-muted-foreground">{pageSizeLabel}</span>
+          <Select
+            value={String(pageSize)}
+            onValueChange={(v: string) => {
+              const nextSize = Number(v);
+              if (!Number.isFinite(nextSize)) return;
+              onPageSizeChange(nextSize);
+            }}
+            disabled={disabled}
+          >
+            <SelectTrigger className="h-9 w-[110px]">
+              <SelectValue />
+            </SelectTrigger>
+            <SelectContent>
+              {pageSizeOptions.map((opt) => (
+                <SelectItem key={opt} value={String(opt)}>
+                  {opt}
+                </SelectItem>
+              ))}
+            </SelectContent>
+          </Select>
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/ui/SearchInput.tsx b/frontend/components/ui/SearchInput.tsx
new file mode 100644
index 00000000..0e106fac
--- /dev/null
+++ b/frontend/components/ui/SearchInput.tsx
@@ -0,0 +1,368 @@
+"use client";
+
+import * as React from "react";
+import { Search } from "lucide-react";
+
+import { cn } from "@/lib/utils";
+import { fuzzyScore } from "@/lib/search/fuzzy";
+
+type BaseSuggestion = {
+  id: string;
+  label: string;
+};
+
+export type SearchInputSuggestion<TSuggestion extends BaseSuggestion = BaseSuggestion> =
+  TSuggestion;
+
+export interface SearchInputProps<
+  TSuggestion extends BaseSuggestion = BaseSuggestion,
+> extends Omit<React.InputHTMLAttributes<HTMLInputElement>, "value" | "defaultValue"> {
+  value?: string;
+  defaultValue?: string;
+  onValueChange?: (value: string) => void;
+
+  suggestions: readonly TSuggestion[];
+  onSelectSuggestion?: (suggestion: TSuggestion) => void;
+
+  getSuggestionLabel?: (suggestion: TSuggestion) => string;
+  getSuggestionValue?: (suggestion: TSuggestion) => string;
+
+  minQueryLength?: number;
+  maxSuggestions?: number;
+
+  emptyText?: string;
+
+  containerClassName?: string;
+  inputClassName?: string;
+  dropdownClassName?: string;
+
+  highlightMatches?: boolean;
+}
+
+function escapeRegExp(value: string) {
+  return value.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+}
+
+function HighlightedText({
+  text,
+  query,
+}: {
+  text: string;
+  query: string;
+}) {
+  const q = query.trim();
+  if (!q) return <>{text}</>;
+
+  const re = new RegExp(`(${escapeRegExp(q)})`, "ig");
+  const parts = text.split(re);
+
+  return (
+    <>
+      {parts.map((part, idx) => {
+        const isMatch = part.toLowerCase() === q.toLowerCase();
+        return isMatch ? (
+          <mark
+             
+            key={idx}
+            className="rounded-sm bg-primary/10 px-0.5 text-foreground"
+          >
+            {part}
+          </mark>
+        ) : (
+           
+          <React.Fragment key={idx}>{part}</React.Fragment>
+        );
+      })}
+    </>
+  );
+}
+
+export function SearchInput<
+  TSuggestion extends BaseSuggestion = BaseSuggestion,
+>({
+  value,
+  defaultValue,
+  onValueChange,
+  suggestions,
+  onSelectSuggestion,
+  getSuggestionLabel,
+  getSuggestionValue,
+  minQueryLength = 1,
+  maxSuggestions = 8,
+  emptyText = "No results.",
+  containerClassName,
+  inputClassName,
+  dropdownClassName,
+  highlightMatches = true,
+  placeholder = "Search…",
+  disabled,
+  id,
+  ...inputProps
+}: Readonly<SearchInputProps<TSuggestion>>) {
+  const isControlled = value != null;
+  const [uncontrolledValue, setUncontrolledValue] = React.useState(
+    defaultValue ?? ""
+  );
+
+  const inputValue = isControlled ? (value as string) : uncontrolledValue;
+
+  const setValue = React.useCallback(
+    (next: string) => {
+      if (!isControlled) setUncontrolledValue(next);
+      onValueChange?.(next);
+    },
+    [isControlled, onValueChange]
+  );
+
+  const rootRef = React.useRef<HTMLDivElement | null>(null);
+  const inputRef = React.useRef<HTMLInputElement | null>(null);
+
+  const [open, setOpen] = React.useState(false);
+  const [activeIndex, setActiveIndex] = React.useState<number>(-1);
+
+  const labelOf = React.useCallback(
+    (s: TSuggestion) => (getSuggestionLabel ? getSuggestionLabel(s) : s.label),
+    [getSuggestionLabel]
+  );
+
+  const valueOf = React.useCallback(
+    (s: TSuggestion) => (getSuggestionValue ? getSuggestionValue(s) : s.label),
+    [getSuggestionValue]
+  );
+
+  const filtered = React.useMemo(() => {
+    const q = inputValue.trim().toLowerCase();
+    if (q.length < minQueryLength) return [] as TSuggestion[];
+
+    const scored = suggestions
+      .map((s) => {
+        const label = labelOf(s);
+        const { matched, score } = fuzzyScore(q, label);
+        return { s, matched, score };
+      })
+      .filter((x) => x.matched)
+      .sort((a, b) => b.score - a.score)
+      .slice(0, maxSuggestions)
+      .map((x) => x.s);
+
+    return scored;
+  }, [inputValue, labelOf, maxSuggestions, minQueryLength, suggestions]);
+
+  const listboxId = React.useId();
+
+  const openIfPossible = React.useCallback(() => {
+    if (disabled) return;
+    const q = inputValue.trim();
+    if (q.length < minQueryLength) return;
+    setOpen(true);
+  }, [disabled, inputValue, minQueryLength]);
+
+  React.useEffect(() => {
+    // Keep activeIndex in bounds when the filtered list changes.
+    if (!open) {
+      // Use setTimeout to avoid calling setState synchronously in effect
+      const timeoutId = setTimeout(() => {
+        setActiveIndex(-1);
+      }, 0);
+      return () => clearTimeout(timeoutId);
+    }
+
+    if (filtered.length === 0) {
+      // Use setTimeout to avoid calling setState synchronously in effect
+      const timeoutId = setTimeout(() => {
+        setActiveIndex(-1);
+      }, 0);
+      return () => clearTimeout(timeoutId);
+    }
+
+    // Use setTimeout to avoid calling setState synchronously in effect
+    const timeoutId = setTimeout(() => {
+      setActiveIndex((prev) => {
+        if (prev < 0) return 0;
+        return Math.min(prev, filtered.length - 1);
+      });
+    }, 0);
+    
+    return () => clearTimeout(timeoutId);
+  }, [filtered.length, open]);
+
+  React.useEffect(() => {
+    function onPointerDown(e: MouseEvent | TouchEvent) {
+      const el = rootRef.current;
+      if (!el) return;
+      const target = e.target as Node | null;
+      if (target && el.contains(target)) return;
+      setOpen(false);
+      setActiveIndex(-1);
+    }
+
+    document.addEventListener("mousedown", onPointerDown);
+    document.addEventListener("touchstart", onPointerDown);
+
+    return () => {
+      document.removeEventListener("mousedown", onPointerDown);
+      document.removeEventListener("touchstart", onPointerDown);
+    };
+  }, []);
+
+  const selectSuggestion = React.useCallback(
+    (s: TSuggestion) => {
+      const nextValue = valueOf(s);
+      setValue(nextValue);
+      onSelectSuggestion?.(s);
+      setOpen(false);
+      setActiveIndex(-1);
+      // keep focus in the input for quick follow-up actions
+      requestAnimationFrame(() => inputRef.current?.focus());
+    },
+    [onSelectSuggestion, setValue, valueOf]
+  );
+
+  const activeDescendantId =
+    open && activeIndex >= 0 && activeIndex < filtered.length
+      ? `${listboxId}-option-${filtered[activeIndex]!.id}`
+      : undefined;
+
+  return (
+    <div
+      ref={rootRef}
+      className={cn("relative w-full", containerClassName)}
+    >
+      <div className="relative">
+        <div className="pointer-events-none absolute inset-y-0 left-0 flex items-center pl-3 text-muted-foreground">
+          <Search className="h-4 w-4" />
+        </div>
+
+        <input
+          {...inputProps}
+          id={id}
+          ref={(node) => {
+            inputRef.current = node;
+          }}
+          value={inputValue}
+          disabled={disabled}
+          placeholder={placeholder}
+          role="combobox"
+          aria-autocomplete="list"
+          aria-expanded={open}
+          aria-controls={listboxId}
+          aria-activedescendant={activeDescendantId}
+          className={cn(
+            "flex h-9 w-full rounded-md border border-input bg-transparent py-2 pl-9 pr-3 text-sm shadow-sm ring-offset-background",
+            "placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring",
+            "disabled:cursor-not-allowed disabled:opacity-50",
+            inputClassName
+          )}
+          onFocus={(e) => {
+            inputProps.onFocus?.(e);
+            openIfPossible();
+          }}
+          onChange={(e) => {
+            setValue(e.target.value);
+            setOpen(true);
+            inputProps.onChange?.(e);
+          }}
+          onKeyDown={(e) => {
+            inputProps.onKeyDown?.(e);
+            if (e.defaultPrevented) return;
+
+            if (e.key === "ArrowDown") {
+              e.preventDefault();
+              if (!open) setOpen(true);
+              if (filtered.length === 0) return;
+              setActiveIndex((idx) => (idx + 1) % filtered.length);
+              return;
+            }
+
+            if (e.key === "ArrowUp") {
+              e.preventDefault();
+              if (!open) setOpen(true);
+              if (filtered.length === 0) return;
+              setActiveIndex((idx) => {
+                const next = idx <= 0 ? filtered.length - 1 : idx - 1;
+                return next;
+              });
+              return;
+            }
+
+            if (e.key === "Enter") {
+              if (!open) return;
+              if (activeIndex < 0 || activeIndex >= filtered.length) return;
+              e.preventDefault();
+              selectSuggestion(filtered[activeIndex]!);
+              return;
+            }
+
+            if (e.key === "Escape") {
+              if (!open) return;
+              e.preventDefault();
+              setOpen(false);
+              setActiveIndex(-1);
+              return;
+            }
+          }}
+        />
+      </div>
+
+      {open ? (
+        <div
+          className={cn(
+            "absolute z-50 mt-1 w-full overflow-hidden rounded-md border bg-popover text-popover-foreground shadow-md",
+            dropdownClassName
+          )}
+        >
+          <ul
+            id={listboxId}
+            role="listbox"
+            className="max-h-60 overflow-auto p-1"
+          >
+            {filtered.length === 0 ? (
+              <li
+                role="option"
+                aria-disabled="true"
+                aria-selected="false"
+                className="px-2 py-2 text-sm text-muted-foreground"
+              >
+                {emptyText}
+              </li>
+            ) : (
+              filtered.map((s, idx) => {
+                const isActive = idx === activeIndex;
+                const label = labelOf(s);
+
+                return (
+                  <li
+                    id={`${listboxId}-option-${s.id}`}
+                    key={s.id}
+                    role="option"
+                    aria-selected={isActive}
+                    className={cn(
+                      "flex cursor-pointer select-none items-center rounded-sm px-2 py-2 text-sm outline-none",
+                      isActive
+                        ? "bg-accent text-accent-foreground"
+                        : "hover:bg-accent/50"
+                    )}
+                    // Use onMouseDown to avoid input blur before click fires.
+                    onMouseDown={(e) => {
+                      e.preventDefault();
+                      selectSuggestion(s);
+                    }}
+                    onMouseEnter={() => setActiveIndex(idx)}
+                  >
+                    <span className="truncate">
+                      {highlightMatches ? (
+                        <HighlightedText text={label} query={inputValue} />
+                      ) : (
+                        label
+                      )}
+                    </span>
+                  </li>
+                );
+              })
+            )}
+          </ul>
+        </div>
+      ) : null}
+    </div>
+  );
+}
diff --git a/frontend/components/ui/Toast.tsx b/frontend/components/ui/Toast.tsx
new file mode 100644
index 00000000..76bf1f1f
--- /dev/null
+++ b/frontend/components/ui/Toast.tsx
@@ -0,0 +1,104 @@
+"use client";
+
+import React from 'react';
+import { X, CheckCircle, AlertCircle, Info, AlertTriangle } from 'lucide-react';
+import type { Toast } from '@/lib/toast/store';
+import { cn } from '@/lib/utils';
+import { Button } from './button';
+
+interface ToastComponentProps {
+  toast: Toast;
+  onDismiss: (id: string) => void;
+}
+
+const toastIcons = {
+  success: CheckCircle,
+  error: AlertCircle,
+  info: Info,
+  warning: AlertTriangle,
+};
+
+const toastVariants = {
+  success: 'bg-green-50 border-green-200 text-green-800',
+  error: 'bg-red-50 border-red-200 text-red-800',
+  info: 'bg-blue-50 border-blue-200 text-blue-800',
+  warning: 'bg-yellow-50 border-yellow-200 text-yellow-800',
+};
+
+const iconVariants = {
+  success: 'text-green-600',
+  error: 'text-red-600',
+  info: 'text-blue-600',
+  warning: 'text-yellow-600',
+};
+
+export const ToastComponent: React.FC<ToastComponentProps> = ({ toast, onDismiss }) => {
+  const Icon = toastIcons[toast.type];
+  
+  const handleDismiss = () => {
+    onDismiss(toast.id);
+  };
+
+  const handleAction = () => {
+    if (toast.action?.onClick) {
+      toast.action.onClick();
+    }
+  };
+
+  return (
+    <div
+      role="alert"
+      aria-live="polite"
+      aria-atomic="true"
+      className={cn(
+        'group relative flex w-full max-w-md items-start gap-3 rounded-lg border p-4 shadow-lg transition-all duration-300 ease-in-out',
+        'animate-in slide-in-from-right-full fade-in-0',
+        'hover:shadow-xl',
+        toastVariants[toast.type]
+      )}
+    >
+      {/* Icon */}
+      <div className={cn('flex-shrink-0', iconVariants[toast.type])} aria-hidden="true">
+        <Icon className="h-5 w-5" />
+      </div>
+
+      {/* Content */}
+      <div className="flex-1 min-w-0">
+        {toast.title && (
+          <h4 className="font-semibold text-sm mb-1">{toast.title}</h4>
+        )}
+        <p className="text-sm leading-relaxed">{toast.message}</p>
+        
+        {/* Action button */}
+        {toast.action && (
+          <div className="mt-3">
+            <Button
+              variant="outline"
+              size="sm"
+              onClick={handleAction}
+              className="text-xs"
+            >
+              {toast.action.label}
+            </Button>
+          </div>
+        )}
+      </div>
+
+      {/* Dismiss button */}
+      <Button
+        variant="ghost"
+        size="icon"
+        onClick={handleDismiss}
+        className={cn(
+          'flex-shrink-0 h-6 w-6 rounded-full opacity-0 transition-opacity',
+          'group-hover:opacity-100',
+          'hover:bg-black/10 focus:opacity-100',
+          iconVariants[toast.type]
+        )}
+        aria-label="Dismiss notification"
+      >
+        <X className="h-4 w-4" />
+      </Button>
+    </div>
+  );
+};
diff --git a/frontend/components/ui/ToastContainer.tsx b/frontend/components/ui/ToastContainer.tsx
new file mode 100644
index 00000000..c32efde9
--- /dev/null
+++ b/frontend/components/ui/ToastContainer.tsx
@@ -0,0 +1,48 @@
+"use client";
+
+import React from 'react';
+import { useToastStore } from '@/lib/toast/store';
+import { ToastComponent } from './Toast';
+import { cn } from '@/lib/utils';
+
+const positionClasses = {
+  'top-right': 'fixed top-4 right-4 z-50 flex flex-col gap-2',
+  'top-left': 'fixed top-4 left-4 z-50 flex flex-col gap-2',
+  'top-center': 'fixed top-4 left-1/2 transform -translate-x-1/2 z-50 flex flex-col gap-2',
+  'bottom-right': 'fixed bottom-4 right-4 z-50 flex flex-col gap-2',
+  'bottom-left': 'fixed bottom-4 left-4 z-50 flex flex-col gap-2',
+  'bottom-center': 'fixed bottom-4 left-1/2 transform -translate-x-1/2 z-50 flex flex-col gap-2',
+};
+
+export const ToastContainer: React.FC = () => {
+  const { toasts, position, removeToast } = useToastStore();
+
+  if (toasts.length === 0) {
+    return null;
+  }
+
+  const handleDismiss = (id: string) => {
+    removeToast(id);
+  };
+
+  return (
+    <div 
+      className={cn(
+        positionClasses[position],
+        'pointer-events-none'
+      )}
+      role="region"
+      aria-label="Notifications"
+      aria-live="polite"
+    >
+      {toasts.map((toast) => (
+        <div
+          key={toast.id}
+          className="pointer-events-auto animate-in slide-in-from-right-full fade-in-0 duration-300"
+        >
+          <ToastComponent toast={toast} onDismiss={handleDismiss} />
+        </div>
+      ))}
+    </div>
+  );
+};
diff --git a/frontend/components/ui/TransactionModal.tsx b/frontend/components/ui/TransactionModal.tsx
new file mode 100644
index 00000000..0c7de2fc
--- /dev/null
+++ b/frontend/components/ui/TransactionModal.tsx
@@ -0,0 +1,309 @@
+"use client"
+
+import * as React from "react"
+import { CheckCircle2, ExternalLink, Loader2, PenLine, XCircle } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from "@/components/ui/dialog"
+import { Button } from "@/components/ui/button"
+
+export type TransactionStep = "preparing" | "signing" | "submitting" | "complete" | "error"
+
+export type TransactionModalProps = {
+  open: boolean
+  onOpenChange: (open: boolean) => void
+
+  title?: string
+  description?: string
+
+  step: TransactionStep
+  errorTitle?: string
+  errorMessage?: string
+
+  txHash?: string | null
+  network?: "testnet" | "mainnet" | "futurenet"
+
+  onRetry?: () => void
+  retryLabel?: string
+
+  closeLabel?: string
+  allowCloseWhilePending?: boolean
+
+  showConfetti?: boolean
+}
+
+const STEP_ORDER: Array<Exclude<TransactionStep, "error">> = [
+  "preparing",
+  "signing",
+  "submitting",
+  "complete",
+]
+
+const STEP_LABEL: Record<Exclude<TransactionStep, "error">, string> = {
+  preparing: "Preparing",
+  signing: "Signing",
+  submitting: "Submitting",
+  complete: "Complete",
+}
+
+function stepToProgress(step: TransactionStep): number {
+  if (step === "error") return 0
+  const idx = STEP_ORDER.indexOf(step)
+  if (idx < 0) return 0
+  return Math.round(((idx + 1) / STEP_ORDER.length) * 100)
+}
+
+function explorerUrlForTxHash(txHash: string, network?: TransactionModalProps["network"]): string {
+  const net = network ?? "testnet"
+  // Horizon transaction endpoint is a reliable explorer link.
+  const base =
+    net === "mainnet"
+      ? "https://horizon.stellar.org"
+      : net === "futurenet"
+        ? "https://horizon-futurenet.stellar.org"
+        : "https://horizon-testnet.stellar.org"
+
+  return `${base}/transactions/${encodeURIComponent(txHash)}`
+}
+
+function Confetti({ active }: { active: boolean }) {
+  if (!active) return null
+
+  return (
+    <div className="pointer-events-none absolute inset-0 overflow-hidden">
+      <div className="absolute inset-x-0 -top-6 mx-auto h-1 w-1">
+        {Array.from({ length: 24 }).map((_, i) => {
+          const left = (i / 24) * 100
+          const delay = (i % 6) * 0.06
+          const duration = 1.1 + (i % 7) * 0.08
+          const size = 6 + (i % 5) * 2
+          const colors = [
+            "bg-emerald-500",
+            "bg-sky-500",
+            "bg-fuchsia-500",
+            "bg-amber-400",
+            "bg-violet-500",
+            "bg-rose-500",
+          ]
+          const color = colors[i % colors.length]
+
+          return (
+            <span
+              key={i}
+              className={cn(
+                "absolute block rounded-sm opacity-90",
+                color,
+                "animate-[txconfetti_1.4s_ease-in_forwards]"
+              )}
+              style={{
+                left: `${left}%`,
+                width: `${size}px`,
+                height: `${size * 0.6}px`,
+                animationDelay: `${delay}s`,
+                animationDuration: `${duration}s`,
+                transform: `translateX(-50%) rotate(${(i % 12) * 15}deg)`,
+              }}
+            />
+          )
+        })}
+      </div>
+      <style jsx>{`
+        @keyframes txconfetti {
+          0% {
+            transform: translate(-50%, 0) rotate(0deg);
+            opacity: 1;
+          }
+          100% {
+            transform: translate(-50%, 260px) rotate(360deg);
+            opacity: 0;
+          }
+        }
+      `}</style>
+    </div>
+  )
+}
+
+function StepRow({
+  label,
+  state,
+}: {
+  label: string
+  state: "done" | "active" | "todo" | "error"
+}) {
+  const Icon =
+    state === "done" ? CheckCircle2 : state === "error" ? XCircle : state === "active" ? Loader2 : PenLine
+
+  return (
+    <div className="flex items-center gap-3">
+      <span
+        className={cn(
+          "flex h-7 w-7 items-center justify-center rounded-full border",
+          state === "done" && "border-emerald-500/30 bg-emerald-500/10 text-emerald-600",
+          state === "active" && "border-blue-500/30 bg-blue-500/10 text-blue-600",
+          state === "todo" && "border-muted-foreground/20 bg-muted/30 text-muted-foreground",
+          state === "error" && "border-destructive/30 bg-destructive/10 text-destructive"
+        )}
+      >
+        <Icon className={cn("h-4 w-4", state === "active" && "animate-spin")} aria-hidden="true" />
+      </span>
+      <span
+        className={cn(
+          "text-sm font-medium",
+          state === "todo" && "text-muted-foreground",
+          state === "active" && "text-foreground",
+          state === "done" && "text-foreground",
+          state === "error" && "text-destructive"
+        )}
+      >
+        {label}
+      </span>
+    </div>
+  )
+}
+
+export function TransactionModal({
+  open,
+  onOpenChange,
+  title = "Transaction",
+  description = "Follow the transaction progress.",
+  step,
+  errorTitle = "Transaction failed",
+  errorMessage,
+  txHash,
+  network,
+  onRetry,
+  retryLabel = "Retry",
+  closeLabel = "Close",
+  allowCloseWhilePending = false,
+  showConfetti = false,
+}: TransactionModalProps) {
+  const pending = step === "preparing" || step === "signing" || step === "submitting"
+  const canClose = !pending || allowCloseWhilePending
+  const progress = stepToProgress(step)
+
+  const explorerHref = txHash ? explorerUrlForTxHash(txHash, network) : null
+
+  const stepState = (s: Exclude<TransactionStep, "error">): "done" | "active" | "todo" | "error" => {
+    if (step === "error") return "error"
+    const activeIdx = STEP_ORDER.indexOf(step)
+    const idx = STEP_ORDER.indexOf(s)
+    if (idx < activeIdx) return "done"
+    if (idx === activeIdx) return step === "complete" ? "done" : "active"
+    return "todo"
+  }
+
+  return (
+    <Dialog open={open} onOpenChange={(next) => (canClose ? onOpenChange(next) : undefined)}>
+      <DialogContent className="overflow-hidden">
+        <div className="relative">
+          <Confetti active={showConfetti && step === "complete"} />
+          <DialogHeader>
+            <DialogTitle>{title}</DialogTitle>
+            <DialogDescription>{description}</DialogDescription>
+          </DialogHeader>
+
+          <div className="mt-4 space-y-4">
+            <div className="space-y-3">
+              <div className="flex items-center justify-between">
+                <span className="text-sm font-medium">Progress</span>
+                <span className="text-sm text-muted-foreground">{progress}%</span>
+              </div>
+              <div
+                role="progressbar"
+                aria-valuenow={progress}
+                aria-valuemin={0}
+                aria-valuemax={100}
+                aria-label={`Transaction progress: ${progress}%`}
+                className="h-2 w-full overflow-hidden rounded-full bg-muted"
+              >
+                <div
+                  className={cn(
+                    "h-full rounded-full transition-all duration-500",
+                    step === "error" ? "bg-destructive" : step === "complete" ? "bg-emerald-500" : "bg-blue-600",
+                    pending && "animate-pulse"
+                  )}
+                  style={{ width: `${progress}%` }}
+                />
+              </div>
+            </div>
+
+            <div className="grid gap-2" aria-live="polite" aria-atomic="false">
+              <StepRow label={STEP_LABEL.preparing} state={stepState("preparing")} />
+              <StepRow label={STEP_LABEL.signing} state={stepState("signing")} />
+              <StepRow label={STEP_LABEL.submitting} state={stepState("submitting")} />
+              <StepRow label={STEP_LABEL.complete} state={stepState("complete")} />
+            </div>
+
+            {step === "complete" && (
+              <div className="rounded-lg border border-emerald-500/30 bg-emerald-500/10 p-3 text-sm text-emerald-700">
+                <div className="font-medium">Transaction confirmed</div>
+                {explorerHref && (
+                  <a
+                    href={explorerHref}
+                    target="_blank"
+                    rel="noreferrer"
+                    className="mt-1 inline-flex items-center gap-1 text-emerald-700 underline underline-offset-2 hover:opacity-80"
+                  >
+                    View on explorer
+                    <ExternalLink className="h-4 w-4" />
+                  </a>
+                )}
+                {!explorerHref && txHash && (
+                  <div className="mt-1 break-all text-xs text-emerald-700/80">{txHash}</div>
+                )}
+              </div>
+            )}
+
+            {step === "error" && (
+              <div className="rounded-lg border border-destructive/30 bg-destructive/10 p-3 text-sm text-destructive">
+                <div className="font-medium">{errorTitle}</div>
+                {errorMessage && <div className="mt-1 whitespace-pre-wrap text-xs">{errorMessage}</div>}
+                {explorerHref && (
+                  <a
+                    href={explorerHref}
+                    target="_blank"
+                    rel="noreferrer"
+                    className="mt-2 inline-flex items-center gap-1 underline underline-offset-2 hover:opacity-80"
+                  >
+                    View attempted transaction
+                    <ExternalLink className="h-4 w-4" />
+                  </a>
+                )}
+              </div>
+            )}
+
+            {(pending || step === "error") && (
+              <div className="rounded-lg bg-muted/40 p-3 text-xs text-muted-foreground">
+                {pending
+                  ? "Keep this window open while your wallet signs and the transaction is submitted."
+                  : "You can retry the transaction or close this dialog."}
+              </div>
+            )}
+          </div>
+
+          <DialogFooter className="mt-6">
+            {step === "error" && onRetry && (
+              <Button onClick={onRetry}>
+                {retryLabel}
+              </Button>
+            )}
+            <Button
+              variant={step === "complete" ? "default" : "secondary"}
+              onClick={() => (canClose ? onOpenChange(false) : undefined)}
+              disabled={!canClose}
+            >
+              {closeLabel}
+            </Button>
+          </DialogFooter>
+        </div>
+      </DialogContent>
+    </Dialog>
+  )
+}
diff --git a/frontend/components/ui/async-state.tsx b/frontend/components/ui/async-state.tsx
new file mode 100644
index 00000000..ee39b622
--- /dev/null
+++ b/frontend/components/ui/async-state.tsx
@@ -0,0 +1,190 @@
+import { ReactNode } from "react";
+import { LoadingSpinner } from "./loading-spinner";
+import { cn } from "@/lib/utils";
+
+interface AsyncStateProps {
+  /**
+   * Whether data is currently loading
+   */
+  isLoading: boolean;
+  /**
+   * Error if one occurred
+   */
+  error: Error | null;
+  /**
+   * Data is available
+   */
+  data?: unknown;
+  /**
+   * Content to render when loading
+   */
+  loadingFallback?: ReactNode;
+  /**
+   * Content to render when error occurs
+   */
+  errorFallback?: (error: Error, retry?: () => void) => ReactNode;
+  /**
+   * Content to render when data is empty
+   */
+  emptyFallback?: ReactNode;
+  /**
+   * Main content to render
+   */
+  children: ReactNode;
+  /**
+   * Optional retry function
+   */
+  onRetry?: () => void;
+}
+
+/**
+ * Wrapper component for displaying async operation states
+ * Handles loading, error, and empty states automatically
+ */
+export function AsyncState({
+  isLoading,
+  error,
+  data,
+  loadingFallback,
+  errorFallback,
+  emptyFallback,
+  children,
+  onRetry,
+}: AsyncStateProps) {
+  if (isLoading) {
+    return (
+      loadingFallback || (
+        <div
+          className="flex items-center justify-center py-12"
+          role="status"
+          aria-label="Loading content"
+        >
+          <div className="text-center">
+            <LoadingSpinner size={40} className="mx-auto mb-4" />
+            <p className="text-sm text-gray-600">Loading content...</p>
+          </div>
+        </div>
+      )
+    );
+  }
+
+  if (error) {
+    return (
+      errorFallback?.(error, onRetry) || (
+        <div
+          className="flex items-center justify-center py-12 px-4"
+          role="alert"
+        >
+          <div className="text-center">
+            <div className="text-red-600 mb-2">
+              <svg
+                className="w-12 h-12 mx-auto"
+                fill="none"
+                stroke="currentColor"
+                viewBox="0 0 24 24"
+              >
+                <path
+                  strokeLinecap="round"
+                  strokeLinejoin="round"
+                  strokeWidth={2}
+                  d="M12 8v4m0 4v.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+                />
+              </svg>
+            </div>
+            <h3 className="font-semibold text-gray-900 mb-1">
+              Something went wrong
+            </h3>
+            <p className="text-sm text-gray-600 mb-4">{error.message}</p>
+            {onRetry && (
+              <button
+                onClick={onRetry}
+                className="text-blue-600 hover:text-blue-700 font-medium text-sm"
+                aria-label="Retry loading"
+              >
+                Try Again
+              </button>
+            )}
+          </div>
+        </div>
+      )
+    );
+  }
+
+  if (!data && emptyFallback) {
+    return <div role="status">{emptyFallback}</div>;
+  }
+
+  return <>{children}</>;
+}
+
+/**
+ * Loading overlay component for blocking UI during operations
+ */
+export interface LoadingOverlayProps {
+  /**
+   * Show the overlay
+   */
+  isVisible: boolean;
+  /**
+   * Loading message
+   */
+  message?: string;
+  /**
+   * Show indeterminate progress
+   */
+  indeterminate?: boolean;
+  /**
+   * Allow cancellation
+   */
+  onCancel?: () => void;
+  /**
+   * Custom className
+   */
+  className?: string;
+}
+
+export function LoadingOverlay({
+  isVisible,
+  message = "Loading...",
+  indeterminate = true,
+  onCancel,
+  className,
+}: LoadingOverlayProps) {
+  if (!isVisible) return null;
+
+  return (
+    <div
+      className={cn(
+        "fixed inset-0 bg-black/50 flex items-center justify-center z-50",
+        className
+      )}
+      role="status"
+      aria-label={message}
+    >
+      <div className="bg-white rounded-lg shadow-lg p-8 max-w-sm w-full mx-4">
+        <div className="text-center">
+          <LoadingSpinner size={48} className="mx-auto mb-4" />
+          <p className="text-gray-900 font-semibold mb-4">{message}</p>
+          {indeterminate && (
+            <div
+              className="w-full h-1 bg-gray-200 rounded-full overflow-hidden"
+              role="progressbar"
+              aria-label="Loading progress"
+            >
+              <div className="h-full bg-blue-500 animate-pulse" />
+            </div>
+          )}
+          {onCancel && (
+            <button
+              onClick={onCancel}
+              className="mt-6 px-4 py-2 text-gray-700 border border-gray-300 rounded-lg hover:bg-gray-50 transition-colors"
+              aria-label="Cancel operation"
+            >
+              Cancel
+            </button>
+          )}
+        </div>
+      </div>
+    </div>
+  );
+}
diff --git a/frontend/components/ui/badge.tsx b/frontend/components/ui/badge.tsx
new file mode 100644
index 00000000..e87d62bf
--- /dev/null
+++ b/frontend/components/ui/badge.tsx
@@ -0,0 +1,36 @@
+import * as React from "react"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const badgeVariants = cva(
+  "inline-flex items-center rounded-md border px-2.5 py-0.5 text-xs font-semibold transition-colors focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2",
+  {
+    variants: {
+      variant: {
+        default:
+          "border-transparent bg-primary text-primary-foreground shadow hover:bg-primary/80",
+        secondary:
+          "border-transparent bg-secondary text-secondary-foreground hover:bg-secondary/80",
+        destructive:
+          "border-transparent bg-destructive text-destructive-foreground shadow hover:bg-destructive/80",
+        outline: "text-foreground",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+    },
+  }
+)
+
+export interface BadgeProps
+  extends React.HTMLAttributes<HTMLDivElement>,
+    VariantProps<typeof badgeVariants> {}
+
+function Badge({ className, variant, ...props }: BadgeProps) {
+  return (
+    <div className={cn(badgeVariants({ variant }), className)} {...props} />
+  )
+}
+
+export { Badge, badgeVariants }
diff --git a/frontend/components/ui/button.tsx b/frontend/components/ui/button.tsx
new file mode 100644
index 00000000..65d4fcd9
--- /dev/null
+++ b/frontend/components/ui/button.tsx
@@ -0,0 +1,57 @@
+import * as React from "react"
+import { Slot } from "@radix-ui/react-slot"
+import { cva, type VariantProps } from "class-variance-authority"
+
+import { cn } from "@/lib/utils"
+
+const buttonVariants = cva(
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
+  {
+    variants: {
+      variant: {
+        default:
+          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
+        outline:
+          "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground",
+        secondary:
+          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
+        ghost: "hover:bg-accent hover:text-accent-foreground",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-9 px-4 py-2",
+        sm: "h-8 rounded-md px-3 text-xs",
+        lg: "h-10 rounded-md px-8",
+        icon: "h-9 w-9",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+)
+
+export interface ButtonProps
+  extends React.ButtonHTMLAttributes<HTMLButtonElement>,
+    VariantProps<typeof buttonVariants> {
+  asChild?: boolean
+}
+
+const Button = React.forwardRef<HTMLButtonElement, ButtonProps>(
+  ({ className, variant, size, asChild = false, ...props }, ref) => {
+    const Comp = asChild ? Slot : "button"
+    return (
+      <Comp
+        className={cn(buttonVariants({ variant, size, className }))}
+        ref={ref}
+        {...props}
+      />
+    )
+  }
+)
+Button.displayName = "Button"
+
+export { Button, buttonVariants }
diff --git a/frontend/components/ui/card.tsx b/frontend/components/ui/card.tsx
new file mode 100644
index 00000000..cabfbfc5
--- /dev/null
+++ b/frontend/components/ui/card.tsx
@@ -0,0 +1,76 @@
+import * as React from "react"
+
+import { cn } from "@/lib/utils"
+
+const Card = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn(
+      "rounded-xl border bg-card text-card-foreground shadow",
+      className
+    )}
+    {...props}
+  />
+))
+Card.displayName = "Card"
+
+const CardHeader = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex flex-col space-y-1.5 p-6", className)}
+    {...props}
+  />
+))
+CardHeader.displayName = "CardHeader"
+
+const CardTitle = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("font-semibold leading-none tracking-tight", className)}
+    {...props}
+  />
+))
+CardTitle.displayName = "CardTitle"
+
+const CardDescription = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+CardDescription.displayName = "CardDescription"
+
+const CardContent = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div ref={ref} className={cn("p-6 pt-0", className)} {...props} />
+))
+CardContent.displayName = "CardContent"
+
+const CardFooter = React.forwardRef<
+  HTMLDivElement,
+  React.HTMLAttributes<HTMLDivElement>
+>(({ className, ...props }, ref) => (
+  <div
+    ref={ref}
+    className={cn("flex items-center p-6 pt-0", className)}
+    {...props}
+  />
+))
+CardFooter.displayName = "CardFooter"
+
+export { Card, CardHeader, CardFooter, CardTitle, CardDescription, CardContent }
diff --git a/frontend/components/ui/dialog.tsx b/frontend/components/ui/dialog.tsx
new file mode 100644
index 00000000..1647513e
--- /dev/null
+++ b/frontend/components/ui/dialog.tsx
@@ -0,0 +1,122 @@
+"use client"
+
+import * as React from "react"
+import * as DialogPrimitive from "@radix-ui/react-dialog"
+import { X } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+const Dialog = DialogPrimitive.Root
+
+const DialogTrigger = DialogPrimitive.Trigger
+
+const DialogPortal = DialogPrimitive.Portal
+
+const DialogClose = DialogPrimitive.Close
+
+const DialogOverlay = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Overlay>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Overlay>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Overlay
+    ref={ref}
+    className={cn(
+      "fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
+      className
+    )}
+    {...props}
+  />
+))
+DialogOverlay.displayName = DialogPrimitive.Overlay.displayName
+
+const DialogContent = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Content>
+>(({ className, children, ...props }, ref) => (
+  <DialogPortal>
+    <DialogOverlay />
+    <DialogPrimitive.Content
+      ref={ref}
+      className={cn(
+        "fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border bg-background p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+        className
+      )}
+      {...props}
+    >
+      {children}
+      <DialogPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-accent data-[state=open]:text-muted-foreground">
+        <X className="h-4 w-4" />
+        <span className="sr-only">Close</span>
+      </DialogPrimitive.Close>
+    </DialogPrimitive.Content>
+  </DialogPortal>
+))
+DialogContent.displayName = DialogPrimitive.Content.displayName
+
+const DialogHeader = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col space-y-1.5 text-center sm:text-left",
+      className
+    )}
+    {...props}
+  />
+)
+DialogHeader.displayName = "DialogHeader"
+
+const DialogFooter = ({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) => (
+  <div
+    className={cn(
+      "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
+      className
+    )}
+    {...props}
+  />
+)
+DialogFooter.displayName = "DialogFooter"
+
+const DialogTitle = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Title>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Title>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Title
+    ref={ref}
+    className={cn(
+      "text-lg font-semibold leading-none tracking-tight",
+      className
+    )}
+    {...props}
+  />
+))
+DialogTitle.displayName = DialogPrimitive.Title.displayName
+
+const DialogDescription = React.forwardRef<
+  React.ElementRef<typeof DialogPrimitive.Description>,
+  React.ComponentPropsWithoutRef<typeof DialogPrimitive.Description>
+>(({ className, ...props }, ref) => (
+  <DialogPrimitive.Description
+    ref={ref}
+    className={cn("text-sm text-muted-foreground", className)}
+    {...props}
+  />
+))
+DialogDescription.displayName = DialogPrimitive.Description.displayName
+
+export {
+  Dialog,
+  DialogPortal,
+  DialogOverlay,
+  DialogTrigger,
+  DialogClose,
+  DialogContent,
+  DialogHeader,
+  DialogFooter,
+  DialogTitle,
+  DialogDescription,
+}
diff --git a/frontend/components/ui/index.ts b/frontend/components/ui/index.ts
new file mode 100644
index 00000000..287520ad
--- /dev/null
+++ b/frontend/components/ui/index.ts
@@ -0,0 +1,16 @@
+export * from "./button";
+export * from "./input";
+export * from "./textarea";
+export * from "./select";
+export * from "./card";
+export * from "./dialog";
+export * from "./sonner";
+export * from "./skeleton";
+export * from "./badge";
+export * from "./loading-spinner";
+export * from "./progress-bar";
+export * from "./progress-indicator";
+export * from "./async-state";
+export * from "./Toast";
+export * from "./ToastContainer";
+export * from "./InlineErrorState";
diff --git a/frontend/components/ui/input.tsx b/frontend/components/ui/input.tsx
new file mode 100644
index 00000000..754c1ee5
--- /dev/null
+++ b/frontend/components/ui/input.tsx
@@ -0,0 +1,41 @@
+import * as React from 'react';
+
+interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {
+    label?: string;
+    error?: string;
+    icon?: React.ReactNode;
+}
+
+export function Input({ label, error, icon, className = '', id, ...props }: InputProps) {
+    const generatedId = React.useId();
+    const inputId = id ?? generatedId;
+    const errorId = error ? `${inputId}-error` : undefined;
+
+    return (
+        <div className="w-full space-y-1.5">
+            {label && <label htmlFor={inputId} className="block text-sm font-medium text-gray-700">{label}</label>}
+            <div className="relative">
+                {icon && (
+                    <div className="absolute inset-y-0 left-0 flex items-center pl-3 pointer-events-none text-gray-400" aria-hidden="true">
+                        {icon}
+                    </div>
+                )}
+                <input
+                    id={inputId}
+                    aria-invalid={error ? true : undefined}
+                    aria-describedby={errorId}
+                    className={`
+            block w-full rounded-lg border border-gray-300 bg-white py-2 px-3 text-gray-900
+            transition-colors placeholder:text-gray-400
+            focus:border-blue-500 focus:outline-none focus:ring-1 focus:ring-blue-500
+            ${icon ? 'pl-10' : ''}
+            ${error ? 'border-red-500 focus:border-red-500 focus:ring-red-500' : ''}
+            ${className}
+          `}
+                    {...props}
+                />
+            </div>
+            {error && <p id={errorId} role="alert" className="text-sm text-red-600">{error}</p>}
+        </div>
+    );
+}
diff --git a/frontend/components/ui/loading-spinner.tsx b/frontend/components/ui/loading-spinner.tsx
new file mode 100644
index 00000000..967614d3
--- /dev/null
+++ b/frontend/components/ui/loading-spinner.tsx
@@ -0,0 +1,16 @@
+import { Loader2 } from "lucide-react";
+import { cn } from "@/lib/utils";
+
+interface LoadingSpinnerProps extends React.SVGProps<SVGSVGElement> {
+    size?: number;
+}
+
+export function LoadingSpinner({ size = 24, className, ...props }: LoadingSpinnerProps) {
+    return (
+        <Loader2
+            size={size}
+            className={cn("animate-spin text-muted-foreground", className)}
+            {...props}
+        />
+    );
+}
diff --git a/frontend/components/ui/progress-bar.tsx b/frontend/components/ui/progress-bar.tsx
new file mode 100644
index 00000000..4fd69d8e
--- /dev/null
+++ b/frontend/components/ui/progress-bar.tsx
@@ -0,0 +1,89 @@
+import { cn } from "@/lib/utils";
+
+interface ProgressBarProps extends React.HTMLAttributes<HTMLDivElement> {
+  /**
+   * Progress percentage (0-100)
+   */
+  value: number;
+  /**
+   * Maximum value (default: 100)
+   */
+  max?: number;
+  /**
+   * Show percentage label
+   */
+  showLabel?: boolean;
+  /**
+   * Show indeterminate state
+   */
+  indeterminate?: boolean;
+  /**
+   * Color variant
+   */
+  variant?: "default" | "success" | "warning" | "error";
+  /**
+   * Size variant
+   */
+  size?: "sm" | "md" | "lg";
+}
+
+const variantClasses = {
+  default: "bg-gradient-to-r from-blue-500 to-blue-600",
+  success: "bg-gradient-to-r from-green-500 to-green-600",
+  warning: "bg-gradient-to-r from-yellow-500 to-yellow-600",
+  error: "bg-gradient-to-r from-red-500 to-red-600",
+};
+
+const sizeClasses = {
+  sm: "h-1",
+  md: "h-2",
+  lg: "h-3",
+};
+
+export function ProgressBar({
+  value,
+  max = 100,
+  showLabel = false,
+  indeterminate = false,
+  variant = "default",
+  size = "md",
+  className,
+  ...props
+}: ProgressBarProps) {
+  const percentage = Math.min((value / max) * 100, 100);
+
+  return (
+    <div
+      className={cn("w-full", className)}
+      role="progressbar"
+      aria-valuenow={value}
+      aria-valuemin={0}
+      aria-valuemax={max}
+      aria-label="Loading progress"
+      {...props}
+    >
+      <div
+        className={cn(
+          "w-full bg-gray-200 rounded-full overflow-hidden",
+          sizeClasses[size]
+        )}
+      >
+        <div
+          className={cn(
+            "h-full transition-all duration-300 rounded-full",
+            variantClasses[variant],
+            indeterminate && "animate-pulse"
+          )}
+          style={{
+            width: indeterminate ? "100%" : `${percentage}%`,
+          }}
+        />
+      </div>
+      {showLabel && (
+        <div className="mt-1 text-sm text-gray-600 text-center">
+          {Math.round(percentage)}%
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/ui/progress-indicator.tsx b/frontend/components/ui/progress-indicator.tsx
new file mode 100644
index 00000000..69cda17a
--- /dev/null
+++ b/frontend/components/ui/progress-indicator.tsx
@@ -0,0 +1,173 @@
+import { cn } from "@/lib/utils";
+import { Check } from "lucide-react";
+
+interface ProgressStep {
+  id: string;
+  label: string;
+  description?: string;
+}
+
+interface ProgressIndicatorProps {
+  /**
+   * Array of steps
+   */
+  steps: ProgressStep[];
+  /**
+   * Current step index (0-based)
+   */
+  currentStep: number;
+  /**
+   * Completed step indices
+   */
+  completedSteps?: number[];
+  /**
+   * Orientation (vertical or horizontal)
+   */
+  orientation?: "horizontal" | "vertical";
+  /**
+   * Show step descriptions
+   */
+  showDescriptions?: boolean;
+  /**
+   * Custom className
+   */
+  className?: string;
+}
+
+export function ProgressIndicator({
+  steps,
+  currentStep,
+  completedSteps = [],
+  orientation = "horizontal",
+  showDescriptions = true,
+  className,
+}: ProgressIndicatorProps) {
+  return (
+    <div
+      className={cn(
+        "w-full",
+        orientation === "vertical" ? "space-y-6" : "space-y-4",
+        className
+      )}
+      role="progressbar"
+      aria-valuenow={currentStep + 1}
+      aria-valuemin={1}
+      aria-valuemax={steps.length}
+      aria-label={`Progress: Step ${currentStep + 1} of ${steps.length}`}
+    >
+      {orientation === "horizontal" ? (
+        <div className="flex items-center justify-between">
+          {steps.map((step, index) => (
+            <div key={step.id} className="flex flex-col items-center flex-1">
+              {/* Step Circle */}
+              <div
+                className={cn(
+                  "w-10 h-10 rounded-full flex items-center justify-center font-semibold transition-all",
+                  completedSteps.includes(index)
+                    ? "bg-green-500 text-white"
+                    : index === currentStep
+                      ? "bg-blue-500 text-white ring-2 ring-blue-300"
+                      : "bg-gray-200 text-gray-600"
+                )}
+              >
+                {completedSteps.includes(index) ? (
+                  <Check size={20} className="aria-label=Completed" />
+                ) : (
+                  index + 1
+                )}
+              </div>
+
+              {/* Step Label */}
+              <div className="mt-2 text-center">
+                <p
+                  className={cn(
+                    "text-sm font-medium",
+                    index === currentStep
+                      ? "text-blue-600"
+                      : completedSteps.includes(index)
+                        ? "text-green-600"
+                        : "text-gray-600"
+                  )}
+                >
+                  {step.label}
+                </p>
+              </div>
+
+              {/* Connector Line */}
+              {index < steps.length - 1 && (
+                <div
+                  className={cn(
+                    "h-1 mt-4 flex-1 mx-2",
+                    completedSteps.includes(index)
+                      ? "bg-green-500"
+                      : "bg-gray-200"
+                  )}
+                  role="separator"
+                />
+              )}
+            </div>
+          ))}
+        </div>
+      ) : (
+        <div className="space-y-6">
+          {steps.map((step, index) => (
+            <div key={step.id} className="flex gap-4">
+              {/* Vertical Step Circle */}
+              <div className="flex flex-col items-center">
+                <div
+                  className={cn(
+                    "w-10 h-10 rounded-full flex items-center justify-center font-semibold transition-all",
+                    completedSteps.includes(index)
+                      ? "bg-green-500 text-white"
+                      : index === currentStep
+                        ? "bg-blue-500 text-white ring-2 ring-blue-300"
+                        : "bg-gray-200 text-gray-600"
+                  )}
+                >
+                  {completedSteps.includes(index) ? (
+                    <Check size={20} />
+                  ) : (
+                    index + 1
+                  )}
+                </div>
+
+                {/* Vertical Connector */}
+                {index < steps.length - 1 && (
+                  <div
+                    className={cn(
+                      "w-1 h-12 mt-2",
+                      completedSteps.includes(index)
+                        ? "bg-green-500"
+                        : "bg-gray-200"
+                    )}
+                  />
+                )}
+              </div>
+
+              {/* Step Content */}
+              <div className="pt-1">
+                <p
+                  className={cn(
+                    "text-sm font-medium",
+                    index === currentStep
+                      ? "text-blue-600"
+                      : completedSteps.includes(index)
+                        ? "text-green-600"
+                        : "text-gray-600"
+                  )}
+                >
+                  {step.label}
+                </p>
+                {showDescriptions && step.description && (
+                  <p className="text-xs text-gray-500 mt-1">
+                    {step.description}
+                  </p>
+                )}
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/ui/select.tsx b/frontend/components/ui/select.tsx
new file mode 100644
index 00000000..6e637f7d
--- /dev/null
+++ b/frontend/components/ui/select.tsx
@@ -0,0 +1,159 @@
+"use client"
+
+import * as React from "react"
+import * as SelectPrimitive from "@radix-ui/react-select"
+import { Check, ChevronDown, ChevronUp } from "lucide-react"
+
+import { cn } from "@/lib/utils"
+
+const Select = SelectPrimitive.Root
+
+const SelectGroup = SelectPrimitive.Group
+
+const SelectValue = SelectPrimitive.Value
+
+const SelectTrigger = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Trigger>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Trigger>
+>(({ className, children, ...props }, ref) => (
+  <SelectPrimitive.Trigger
+    ref={ref}
+    className={cn(
+      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-transparent px-3 py-2 text-sm shadow-sm ring-offset-background data-[placeholder]:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50 [&>span]:line-clamp-1",
+      className
+    )}
+    {...props}
+  >
+    {children}
+    <SelectPrimitive.Icon asChild>
+      <ChevronDown className="h-4 w-4 opacity-50" />
+    </SelectPrimitive.Icon>
+  </SelectPrimitive.Trigger>
+))
+SelectTrigger.displayName = SelectPrimitive.Trigger.displayName
+
+const SelectScrollUpButton = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.ScrollUpButton>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.ScrollUpButton>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.ScrollUpButton
+    ref={ref}
+    className={cn(
+      "flex cursor-default items-center justify-center py-1",
+      className
+    )}
+    {...props}
+  >
+    <ChevronUp className="h-4 w-4" />
+  </SelectPrimitive.ScrollUpButton>
+))
+SelectScrollUpButton.displayName = SelectPrimitive.ScrollUpButton.displayName
+
+const SelectScrollDownButton = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.ScrollDownButton>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.ScrollDownButton>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.ScrollDownButton
+    ref={ref}
+    className={cn(
+      "flex cursor-default items-center justify-center py-1",
+      className
+    )}
+    {...props}
+  >
+    <ChevronDown className="h-4 w-4" />
+  </SelectPrimitive.ScrollDownButton>
+))
+SelectScrollDownButton.displayName =
+  SelectPrimitive.ScrollDownButton.displayName
+
+const SelectContent = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Content>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Content>
+>(({ className, children, position = "popper", ...props }, ref) => (
+  <SelectPrimitive.Portal>
+    <SelectPrimitive.Content
+      ref={ref}
+      className={cn(
+        "relative z-50 max-h-[--radix-select-content-available-height] min-w-[8rem] overflow-y-auto overflow-x-hidden rounded-md border bg-popover text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 origin-[--radix-select-content-transform-origin]",
+        position === "popper" &&
+          "data-[side=bottom]:translate-y-1 data-[side=left]:-translate-x-1 data-[side=right]:translate-x-1 data-[side=top]:-translate-y-1",
+        className
+      )}
+      position={position}
+      {...props}
+    >
+      <SelectScrollUpButton />
+      <SelectPrimitive.Viewport
+        className={cn(
+          "p-1",
+          position === "popper" &&
+            "h-[var(--radix-select-trigger-height)] w-full min-w-[var(--radix-select-trigger-width)]"
+        )}
+      >
+        {children}
+      </SelectPrimitive.Viewport>
+      <SelectScrollDownButton />
+    </SelectPrimitive.Content>
+  </SelectPrimitive.Portal>
+))
+SelectContent.displayName = SelectPrimitive.Content.displayName
+
+const SelectLabel = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Label>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Label>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.Label
+    ref={ref}
+    className={cn("px-2 py-1.5 text-sm font-semibold", className)}
+    {...props}
+  />
+))
+SelectLabel.displayName = SelectPrimitive.Label.displayName
+
+const SelectItem = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Item>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Item>
+>(({ className, children, ...props }, ref) => (
+  <SelectPrimitive.Item
+    ref={ref}
+    className={cn(
+      "relative flex w-full cursor-default select-none items-center rounded-sm py-1.5 pl-2 pr-8 text-sm outline-none focus:bg-accent focus:text-accent-foreground data-[disabled]:pointer-events-none data-[disabled]:opacity-50",
+      className
+    )}
+    {...props}
+  >
+    <span className="absolute right-2 flex h-3.5 w-3.5 items-center justify-center">
+      <SelectPrimitive.ItemIndicator>
+        <Check className="h-4 w-4" />
+      </SelectPrimitive.ItemIndicator>
+    </span>
+    <SelectPrimitive.ItemText>{children}</SelectPrimitive.ItemText>
+  </SelectPrimitive.Item>
+))
+SelectItem.displayName = SelectPrimitive.Item.displayName
+
+const SelectSeparator = React.forwardRef<
+  React.ElementRef<typeof SelectPrimitive.Separator>,
+  React.ComponentPropsWithoutRef<typeof SelectPrimitive.Separator>
+>(({ className, ...props }, ref) => (
+  <SelectPrimitive.Separator
+    ref={ref}
+    className={cn("-mx-1 my-1 h-px bg-muted", className)}
+    {...props}
+  />
+))
+SelectSeparator.displayName = SelectPrimitive.Separator.displayName
+
+export {
+  Select,
+  SelectGroup,
+  SelectValue,
+  SelectTrigger,
+  SelectContent,
+  SelectLabel,
+  SelectItem,
+  SelectSeparator,
+  SelectScrollUpButton,
+  SelectScrollDownButton,
+}
diff --git a/frontend/components/ui/skeleton.tsx b/frontend/components/ui/skeleton.tsx
new file mode 100644
index 00000000..69a4f76e
--- /dev/null
+++ b/frontend/components/ui/skeleton.tsx
@@ -0,0 +1,17 @@
+import * as React from "react";
+
+import { cn } from "@/lib/utils";
+
+function Skeleton({
+  className,
+  ...props
+}: React.HTMLAttributes<HTMLDivElement>) {
+  return (
+    <div
+      className={cn("animate-pulse rounded-md bg-primary/10", className)}
+      {...props}
+    />
+  );
+}
+
+export { Skeleton };
diff --git a/frontend/components/ui/sonner.tsx b/frontend/components/ui/sonner.tsx
new file mode 100644
index 00000000..452f4d9f
--- /dev/null
+++ b/frontend/components/ui/sonner.tsx
@@ -0,0 +1,31 @@
+"use client"
+
+import { useTheme } from "next-themes"
+import { Toaster as Sonner } from "sonner"
+
+type ToasterProps = React.ComponentProps<typeof Sonner>
+
+const Toaster = ({ ...props }: ToasterProps) => {
+  const { theme = "system" } = useTheme()
+
+  return (
+    <Sonner
+      theme={theme as ToasterProps["theme"]}
+      className="toaster group"
+      toastOptions={{
+        classNames: {
+          toast:
+            "group toast group-[.toaster]:bg-background group-[.toaster]:text-foreground group-[.toaster]:border-border group-[.toaster]:shadow-lg",
+          description: "group-[.toast]:text-muted-foreground",
+          actionButton:
+            "group-[.toast]:bg-primary group-[.toast]:text-primary-foreground",
+          cancelButton:
+            "group-[.toast]:bg-muted group-[.toast]:text-muted-foreground",
+        },
+      }}
+      {...props}
+    />
+  )
+}
+
+export { Toaster }
diff --git a/frontend/components/ui/textarea.tsx b/frontend/components/ui/textarea.tsx
new file mode 100644
index 00000000..e56b0aff
--- /dev/null
+++ b/frontend/components/ui/textarea.tsx
@@ -0,0 +1,22 @@
+import * as React from "react"
+
+import { cn } from "@/lib/utils"
+
+const Textarea = React.forwardRef<
+  HTMLTextAreaElement,
+  React.ComponentProps<"textarea">
+>(({ className, ...props }, ref) => {
+  return (
+    <textarea
+      className={cn(
+        "flex min-h-[60px] w-full rounded-md border border-input bg-transparent px-3 py-2 text-base shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50 md:text-sm",
+        className
+      )}
+      ref={ref}
+      {...props}
+    />
+  )
+})
+Textarea.displayName = "Textarea"
+
+export { Textarea }
diff --git a/frontend/components/wallet/WalletConnect.test.tsx b/frontend/components/wallet/WalletConnect.test.tsx
new file mode 100644
index 00000000..b05d879d
--- /dev/null
+++ b/frontend/components/wallet/WalletConnect.test.tsx
@@ -0,0 +1,210 @@
+import { render, screen, fireEvent, waitFor } from '@testing-library/react';
+import { describe, it, expect, vi, beforeEach } from 'vitest';
+import { WalletConnect } from './WalletConnect';
+
+// Mock the wallet store
+const mockUseWalletStore = vi.fn();
+vi.mock('@/lib/state/wallet.store', () => ({
+  useWalletStore: () => mockUseWalletStore(),
+}));
+
+// Mock sonner toast
+const mockToastSuccess = vi.fn();
+vi.mock('sonner', () => ({
+  toast: {
+    success: (...args: unknown[]) => mockToastSuccess(...args),
+  },
+}));
+
+// Mock navigator.clipboard
+const mockClipboardWriteText = vi.fn();
+Object.assign(navigator, {
+  clipboard: {
+    writeText: mockClipboardWriteText,
+  },
+});
+
+describe('WalletConnect component', () => {
+  const mockConnect = vi.fn();
+  const mockDisconnect = vi.fn();
+
+  beforeEach(() => {
+    vi.clearAllMocks();
+  });
+
+  it('should render connect button when disconnected', () => {
+    mockUseWalletStore.mockReturnValue({
+      status: 'disconnected',
+      publicKey: null,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const button = screen.getByRole('button', { name: /connect freighter wallet/i });
+    expect(button).toBeInTheDocument();
+    expect(button).not.toBeDisabled();
+  });
+
+  it('should show loading state when connecting', () => {
+    mockUseWalletStore.mockReturnValue({
+      status: 'connecting',
+      publicKey: null,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const button = screen.getByRole('button', { name: /connect freighter wallet/i });
+    expect(button).toBeInTheDocument();
+    expect(button).toHaveAttribute('aria-busy', 'true');
+    expect(button).toBeDisabled();
+  });
+
+  it('should display truncated address when connected', () => {
+    const publicKey = 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7';
+    mockUseWalletStore.mockReturnValue({
+      status: 'connected',
+      publicKey,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const addressButton = screen.getByRole('button', { name: /wallet connected/i });
+    expect(addressButton).toBeInTheDocument();
+    expect(addressButton).toHaveTextContent('GCFXHS...Z7Z7');
+  });
+
+  it('should call connect when button is clicked', async () => {
+    mockUseWalletStore.mockReturnValue({
+      status: 'disconnected',
+      publicKey: null,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const button = screen.getByRole('button', { name: /connect freighter wallet/i });
+    fireEvent.click(button);
+
+    await waitFor(() => {
+      expect(mockConnect).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  it('should call disconnect when disconnect button is clicked', async () => {
+    const publicKey = 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7';
+    mockUseWalletStore.mockReturnValue({
+      status: 'connected',
+      publicKey,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const disconnectButton = screen.getByRole('button', { name: /disconnect wallet/i });
+    fireEvent.click(disconnectButton);
+
+    await waitFor(() => {
+      expect(mockDisconnect).toHaveBeenCalledTimes(1);
+    });
+  });
+
+  it('should display error message when connection fails', () => {
+    mockUseWalletStore.mockReturnValue({
+      status: 'error',
+      publicKey: null,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: 'User rejected request',
+    });
+
+    render(<WalletConnect />);
+
+    const errorAlert = screen.getByRole('alert');
+    expect(errorAlert).toBeInTheDocument();
+    expect(errorAlert).toHaveTextContent('User rejected request');
+  });
+
+  it('should show Freighter install link when wallet not found error', () => {
+    mockUseWalletStore.mockReturnValue({
+      status: 'error',
+      publicKey: null,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: 'Freighter wallet not installed',
+    });
+
+    render(<WalletConnect />);
+
+    const installLink = screen.getByText(/install here/i);
+    expect(installLink).toBeInTheDocument();
+    expect(installLink).toHaveAttribute('href', 'https://www.freighter.app/');
+    expect(installLink).toHaveAttribute('target', '_blank');
+    expect(installLink).toHaveAttribute('rel', 'noreferrer');
+  });
+
+  it('should copy address to clipboard when clicked', async () => {
+    const publicKey = 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7';
+
+    mockUseWalletStore.mockReturnValue({
+      status: 'connected',
+      publicKey,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const addressButton = screen.getByRole('button', { name: /wallet connected/i });
+    fireEvent.click(addressButton);
+
+    await waitFor(() => {
+      expect(mockClipboardWriteText).toHaveBeenCalledWith(publicKey);
+      expect(mockToastSuccess).toHaveBeenCalledWith('Address copied to clipboard');
+    });
+  });
+
+  it('should have correct accessibility attributes', () => {
+    mockUseWalletStore.mockReturnValue({
+      status: 'disconnected',
+      publicKey: null,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const button = screen.getByRole('button', { name: /connect freighter wallet/i });
+    expect(button).toHaveAttribute('aria-label', 'Connect Freighter wallet');
+  });
+
+  it('should have accessible group when connected', () => {
+    const publicKey = 'GCFXHS5DRCQZ4QZ7Z4X7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7Z7';
+    mockUseWalletStore.mockReturnValue({
+      status: 'connected',
+      publicKey,
+      connect: mockConnect,
+      disconnect: mockDisconnect,
+      error: null,
+    });
+
+    render(<WalletConnect />);
+
+    const group = screen.getByRole('group', { name: /wallet controls/i });
+    expect(group).toBeInTheDocument();
+  });
+});
diff --git a/frontend/components/wallet/WalletConnect.tsx b/frontend/components/wallet/WalletConnect.tsx
new file mode 100644
index 00000000..89128f37
--- /dev/null
+++ b/frontend/components/wallet/WalletConnect.tsx
@@ -0,0 +1,105 @@
+"use client";
+
+import { useWalletStore } from "@/lib/state/wallet.store";
+import { Button } from "@/components/ui/button";
+import { Loader2, Wallet, CheckCircle2, Copy, LogOut, ExternalLink } from "lucide-react";
+import { useCallback } from "react";
+import { toast } from "sonner";
+
+function truncateAddress(address: string): string {
+  return `${address.slice(0, 6)}...${address.slice(-4)}`;
+}
+
+export function WalletConnect() {
+  const { status, publicKey, connect, disconnect, error } = useWalletStore();
+
+  const handleConnect = async () => {
+    try {
+      await connect();
+    } catch {
+      // Error is stored in state and displayed below the button
+    }
+  };
+
+  const handleCopyAddress = useCallback(() => {
+    if (!publicKey) return;
+    navigator.clipboard.writeText(publicKey);
+    toast.success("Address copied to clipboard");
+  }, [publicKey]);
+
+  if (status === "connected" && publicKey) {
+    return (
+      <div className="flex items-center gap-1" role="group" aria-label="Wallet controls">
+        <Button
+          variant="outline"
+          size="sm"
+          onClick={handleCopyAddress}
+          aria-label={`Wallet connected: ${publicKey}. Click to copy address.`}
+          title="Copy wallet address"
+          className="font-mono text-xs gap-1.5"
+        >
+          <CheckCircle2 className="h-3 w-3 text-green-500 shrink-0" aria-hidden="true" />
+          {truncateAddress(publicKey)}
+          <Copy className="h-3 w-3 text-muted-foreground" aria-hidden="true" />
+        </Button>
+
+        <Button
+          variant="ghost"
+          size="icon"
+          onClick={() => disconnect()}
+          aria-label="Disconnect wallet"
+          title="Disconnect wallet"
+          className="text-muted-foreground hover:text-destructive hover:bg-destructive/10"
+        >
+          <LogOut className="h-4 w-4" aria-hidden="true" />
+        </Button>
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex flex-col items-end gap-1.5">
+      <Button
+        onClick={handleConnect}
+        disabled={status === "connecting"}
+        aria-label="Connect Freighter wallet"
+        aria-busy={status === "connecting"}
+        size="sm"
+        className="gap-2"
+      >
+        {status === "connecting" ? (
+          <>
+            <Loader2 className="h-4 w-4 animate-spin" aria-hidden="true" />
+            Connecting...
+          </>
+        ) : (
+          <>
+            <Wallet className="h-4 w-4" aria-hidden="true" />
+            Connect Wallet
+          </>
+        )}
+      </Button>
+
+      {status === "error" && error && (
+        <p className="text-xs text-destructive max-w-[200px] text-right" role="alert" aria-live="assertive">
+          {error.toLowerCase().includes("not installed") ? (
+            <>
+              Freighter not found.{" "}
+              <a
+                href="https://www.freighter.app/"
+                target="_blank"
+                rel="noreferrer"
+                className="underline hover:text-destructive/80 inline-flex items-center gap-0.5"
+              >
+                Install here
+                <ExternalLink className="h-3 w-3" aria-hidden="true" />
+              </a>
+            </>
+          ) : (
+            error
+          )}
+        </p>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/wallet/WalletStatus.tsx b/frontend/components/wallet/WalletStatus.tsx
new file mode 100644
index 00000000..37dfb84a
--- /dev/null
+++ b/frontend/components/wallet/WalletStatus.tsx
@@ -0,0 +1,158 @@
+"use client";
+
+import { useEffect, useMemo, useRef, useState } from "react";
+import { ChevronDown, LogOut, Wallet, AlertTriangle } from "lucide-react";
+
+import { Button } from "@/components/ui/button";
+import { Badge } from "@/components/ui/badge";
+import { LoadingSpinner } from "@/components/ui/loading-spinner";
+import { cn } from "@/lib/utils";
+import { useWalletStore } from "@/lib/state/wallet.store";
+import { useAppStore } from "@/lib/state/app.store";
+
+function truncateAddress(address: string): string {
+  return `${address.slice(0, 6)}...${address.slice(-4)}`;
+}
+
+export function WalletStatus() {
+  const { status, publicKey, connect, disconnect, error, network: walletNetwork } = useWalletStore();
+  const appNetwork = useAppStore((s) => s.network);
+  const network = walletNetwork ?? appNetwork;
+
+  const [open, setOpen] = useState(false);
+  const rootRef = useRef<HTMLDivElement | null>(null);
+
+  const isMainnet = network === "mainnet";
+  const networkLabel = useMemo(() => (isMainnet ? "Mainnet" : "Testnet"), [isMainnet]);
+
+  useEffect(() => {
+    if (!open) return;
+
+    const onMouseDown = (event: MouseEvent) => {
+      const el = rootRef.current;
+      if (!el) return;
+      if (event.target instanceof Node && !el.contains(event.target)) {
+        setOpen(false);
+      }
+    };
+
+    const onKeyDown = (event: KeyboardEvent) => {
+      if (event.key === "Escape") setOpen(false);
+    };
+
+    window.addEventListener("mousedown", onMouseDown);
+    window.addEventListener("keydown", onKeyDown);
+    return () => {
+      window.removeEventListener("mousedown", onMouseDown);
+      window.removeEventListener("keydown", onKeyDown);
+    };
+  }, [open]);
+
+  const handleConnect = async () => {
+    try {
+      await connect();
+    } catch {
+      // error is handled in store
+    }
+  };
+
+  const handleDisconnect = async () => {
+    await disconnect();
+    setOpen(false);
+  };
+
+  const showErrorIndicator = status === "error" && !!error;
+
+  return (
+    <div className="relative flex items-center gap-2" ref={rootRef}>
+      {status === "connected" && publicKey ? (
+        <Badge
+          variant="secondary"
+          className={cn(
+            "select-none border-transparent text-white",
+            isMainnet
+              ? "bg-blue-600 hover:bg-blue-600/90"
+              : "bg-blue-500 hover:bg-blue-500/90"
+          )}
+          aria-label={`Network: ${networkLabel}`}
+          title={`Network: ${networkLabel}`}
+        >
+          {networkLabel}
+        </Badge>
+      ) : null}
+
+      {status !== "connected" || !publicKey ? (
+        <div className="flex items-center gap-2">
+          <Button
+            onClick={handleConnect}
+            disabled={status === "connecting"}
+            aria-label="Connect Freighter wallet"
+            aria-busy={status === "connecting"}
+            size="sm"
+            className="gap-2"
+            variant="default"
+            title={showErrorIndicator ? error ?? undefined : undefined}
+          >
+            {status === "connecting" ? (
+              <>
+                <LoadingSpinner size={16} aria-hidden="true" />
+                Connecting...
+              </>
+            ) : (
+              <>
+                <Wallet className="h-4 w-4" aria-hidden="true" />
+                Connect Wallet
+              </>
+            )}
+          </Button>
+
+          {showErrorIndicator && (
+            <span
+              className="inline-flex items-center"
+              aria-live="polite"
+              title={error ?? "Wallet connection error"}
+            >
+              <AlertTriangle
+                className="h-4 w-4 text-destructive"
+                aria-label={error ?? "Wallet connection error"}
+              />
+            </span>
+          )}
+        </div>
+      ) : (
+        <>
+          <Button
+            variant="outline"
+            size="sm"
+            onClick={() => setOpen((v) => !v)}
+            aria-haspopup="menu"
+            aria-expanded={open}
+            aria-label={`Wallet connected: ${publicKey}`}
+            className="font-mono text-xs gap-1.5"
+          >
+            {truncateAddress(publicKey)}
+            <ChevronDown className="h-3.5 w-3.5 text-muted-foreground" aria-hidden="true" />
+          </Button>
+
+          {open && (
+            <div
+              role="menu"
+              aria-label="Wallet menu"
+              className="absolute right-0 top-full mt-2 min-w-[160px] rounded-md border bg-background shadow-md p-1 z-50"
+            >
+              <button
+                type="button"
+                role="menuitem"
+                onClick={handleDisconnect}
+                className="w-full flex items-center gap-2 rounded-sm px-2 py-1.5 text-sm hover:bg-accent hover:text-accent-foreground focus:bg-accent focus:text-accent-foreground outline-none"
+              >
+                <LogOut className="h-4 w-4" aria-hidden="true" />
+                Disconnect
+              </button>
+            </div>
+          )}
+        </>
+      )}
+    </div>
+  );
+}
diff --git a/frontend/components/wallet/index.ts b/frontend/components/wallet/index.ts
new file mode 100644
index 00000000..bfce9094
--- /dev/null
+++ b/frontend/components/wallet/index.ts
@@ -0,0 +1,2 @@
+export * from "./WalletConnect";
+export * from "./WalletStatus";
diff --git a/frontend/e2e/README.md b/frontend/e2e/README.md
new file mode 100644
index 00000000..1ba95c4f
--- /dev/null
+++ b/frontend/e2e/README.md
@@ -0,0 +1,219 @@
+# End-to-End Tests
+
+This directory contains Playwright E2E tests for the Chain Logistics frontend.
+
+## Overview
+
+The E2E test suite validates critical user journeys across multiple browsers and devices:
+
+- **Browsers**: Chromium, Firefox, WebKit (Safari engine)
+- **Mobile**: Chrome on Pixel 5, Safari on iPhone 13
+- **Total**: 225 tests across 9 test files
+
+## Test Coverage
+
+### Critical User Journeys
+
+1. **Marketing Homepage** (`marketing.spec.ts`)
+   - Landing page loads correctly
+   - Navigation and CTA links work
+   - Basic accessibility checks
+
+2. **Wallet Connection** (`wallet-connection.spec.ts`)
+   - Connect/disconnect wallet states
+   - Dashboard and products page behavior with/without wallet
+
+3. **Product Registration** (`product-registration.spec.ts`)
+   - Multi-step form flow (Basic Info → Origin → Review → Submit)
+   - Form validation
+   - Success screen and transaction hash display
+   - Navigation between steps
+
+4. **Products Listing** (`products.spec.ts`)
+   - Product list rendering
+   - Search and filter functionality
+   - Wallet connection requirements
+
+5. **Dashboard Analytics** (`dashboard.spec.ts`)
+   - Stat cards display
+   - Activity charts
+   - Refresh functionality
+   - Top origins section
+
+6. **Product Tracking** (`product-tracking.spec.ts`)
+   - Product detail page with timeline
+   - Event tracking pages
+   - Supply chain visualization
+
+7. **Product Verification** (`verification.spec.ts`)
+   - Public verification page (no wallet required)
+   - QR code scan destination
+   - Product authenticity display
+
+8. **Navigation** (`navigation.spec.ts`)
+   - Route transitions
+   - Nav bar functionality
+   - 404 handling
+   - Post-registration redirect
+
+9. **Accessibility** (`accessibility.spec.ts`)
+   - Landmark regions (main, nav)
+   - Form labels and ARIA attributes
+   - Keyboard navigation
+   - Screen reader announcements
+
+## Running Tests
+
+### Local Development
+
+```bash
+# Install Playwright browsers (first time only)
+npm run playwright:install
+
+# Run all E2E tests
+npm run test:e2e
+
+# Run with UI mode (interactive)
+npm run test:e2e:ui
+
+# Run specific test file
+npx playwright test e2e/product-registration.spec.ts
+
+# Run specific browser
+npx playwright test --project=chromium
+
+# Debug mode
+npx playwright test --debug
+
+# View last test report
+npm run test:e2e:report
+```
+
+### CI/CD
+
+E2E tests run automatically in the CI pipeline after frontend tests pass:
+
+```yaml
+# .github/workflows/ci.yml
+e2e-tests:
+  needs: [ frontend-tests ]
+  runs-on: ubuntu-latest
+  steps:
+    - Install dependencies
+    - Install Playwright browsers
+    - Run E2E tests
+    - Upload reports (on failure)
+```
+
+## Test Architecture
+
+### Fixtures
+
+**`fixtures/wallet.ts`** - Mock wallet connection helpers:
+- `mockConnectedWallet(page, publicKey?)` - Injects connected wallet state
+- `mockDisconnectedWallet(page)` - Clears wallet state
+
+These bypass the Freighter browser extension requirement in tests by pre-seeding the Zustand store's localStorage persistence.
+
+### Configuration
+
+**`playwright.config.ts`** - Main configuration:
+- Base URL: `http://localhost:3000`
+- Retries: 2 in CI, 0 locally
+- Parallel execution: 2 workers in CI
+- Reporters: GitHub Actions + HTML
+- Web server: Auto-starts `npm run dev`
+
+### Environment Variables
+
+Tests use testnet configuration:
+```bash
+NEXT_PUBLIC_STELLAR_NETWORK=testnet
+NEXT_PUBLIC_CONTRACT_ID=
+NEXT_PUBLIC_RPC_URL=https://soroban-testnet.stellar.org
+```
+
+## Writing New Tests
+
+### Test Structure
+
+```typescript
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet } from "./fixtures";
+
+test.describe("Feature name", () => {
+  test("specific behavior", async ({ page }) => {
+    await mockConnectedWallet(page);
+    await page.goto("/route");
+    
+    await expect(page.getByRole("heading")).toBeVisible();
+  });
+});
+```
+
+### Best Practices
+
+1. **Use semantic selectors**: Prefer `getByRole`, `getByLabel`, `getByText` over CSS selectors
+2. **Mock wallet state**: Use fixtures to avoid Freighter extension dependency
+3. **Wait for visibility**: Use `toBeVisible()` instead of `toBeTruthy()`
+4. **Test user flows**: Focus on complete journeys, not isolated components
+5. **Accessibility**: Include ARIA checks and keyboard navigation tests
+6. **Mobile coverage**: Ensure tests work on mobile viewports
+
+### Debugging Tips
+
+```bash
+# Run with headed browser
+npx playwright test --headed
+
+# Run with slow motion
+npx playwright test --headed --slow-mo=1000
+
+# Generate test code from browser actions
+npx playwright codegen http://localhost:3000
+
+# View trace for failed test
+npx playwright show-trace test-results/.../trace.zip
+```
+
+## CI Artifacts
+
+When tests fail in CI, the following artifacts are uploaded:
+
+- **playwright-report/** - HTML report with screenshots and videos
+- **test-results/** - Raw test results and traces
+
+Retention: 14 days for reports, 7 days for results.
+
+## Cross-Browser Testing
+
+All tests run on 5 configurations:
+
+| Project | Browser | Viewport |
+|---------|---------|----------|
+| chromium | Chrome/Edge | 1280x720 |
+| firefox | Firefox | 1280x720 |
+| webkit | Safari | 1280x720 |
+| mobile-chrome | Chrome | 393x851 (Pixel 5) |
+| mobile-safari | Safari | 390x844 (iPhone 13) |
+
+## Known Limitations
+
+1. **Freighter Extension**: Tests mock wallet state instead of using the real extension
+2. **Smart Contract**: Tests run against mock data when `CONTRACT_ID` is empty
+3. **Network Calls**: Some tests may be flaky if external RPC endpoints are slow
+4. **Visual Regression**: Not included (consider adding Percy or Playwright's visual comparison)
+
+## Maintenance
+
+- Update `@playwright/test` regularly: `npm update @playwright/test`
+- Re-install browsers after updates: `npm run playwright:install`
+- Review and update selectors when UI changes
+- Add new tests for new features before merging
+
+## Resources
+
+- [Playwright Documentation](https://playwright.dev)
+- [Best Practices](https://playwright.dev/docs/best-practices)
+- [Debugging Guide](https://playwright.dev/docs/debug)
+- [CI/CD Integration](https://playwright.dev/docs/ci)
diff --git a/frontend/e2e/accessibility.spec.ts b/frontend/e2e/accessibility.spec.ts
new file mode 100644
index 00000000..1081d0d3
--- /dev/null
+++ b/frontend/e2e/accessibility.spec.ts
@@ -0,0 +1,72 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet, mockDisconnectedWallet } from "./fixtures";
+
+/**
+ * Accessibility checks for critical pages.
+ * Verifies landmark regions, focus management, and ARIA attributes.
+ */
+test.describe("Accessibility", () => {
+    test("marketing page has main landmark", async ({ page }) => {
+        await page.goto("/");
+        await expect(page.locator("main#main-content")).toBeVisible();
+    });
+
+    test("app pages have main landmark", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+        await expect(page.locator("main")).toBeVisible();
+    });
+
+    test("registration form fields have labels", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // All inputs should have associated labels
+        await expect(page.getByLabel(/product id/i)).toBeVisible();
+        await expect(page.getByLabel(/product name/i)).toBeVisible();
+    });
+
+    test("form validation errors use role=alert", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // Trigger validation
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Error messages should use role="alert" for screen readers
+        const alerts = page.locator('[role="alert"]');
+        await expect(alerts.first()).toBeVisible();
+    });
+
+    test("verify page has proper heading hierarchy", async ({ page }) => {
+        await page.goto("/verify/PROD-001");
+
+        const h1 = page.locator("h1");
+        await expect(h1).toBeVisible();
+        await expect(h1).toContainText(/verified/i);
+    });
+
+    test("interactive elements are keyboard focusable on registration form", async ({
+        page,
+    }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // Tab to the first input
+        await page.keyboard.press("Tab");
+        const focused = page.locator(":focus");
+        await expect(focused).toBeVisible();
+    });
+
+    test("disconnected wallet alert is announced on products page", async ({
+        page,
+    }) => {
+        await mockDisconnectedWallet(page);
+        await page.goto("/products");
+
+        // The connect wallet message should be in a visible element
+        await expect(
+            page.getByText(/connect.*wallet/i).first()
+        ).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/dashboard.spec.ts b/frontend/e2e/dashboard.spec.ts
new file mode 100644
index 00000000..6992c1f4
--- /dev/null
+++ b/frontend/e2e/dashboard.spec.ts
@@ -0,0 +1,60 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet, mockDisconnectedWallet } from "./fixtures";
+
+/**
+ * Dashboard analytics journey.
+ */
+test.describe("Dashboard", () => {
+    test("shows connect wallet prompt when disconnected", async ({ page }) => {
+        await mockDisconnectedWallet(page);
+        await page.goto("/dashboard");
+
+        await expect(
+            page.getByText(/connect.*wallet|connect a wallet/i).first()
+        ).toBeVisible();
+    });
+
+    test("renders stat cards when wallet is connected", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        await expect(page.getByText(/total products/i)).toBeVisible();
+        await expect(page.getByText(/total events/i)).toBeVisible();
+        await expect(page.getByText(/top origin/i)).toBeVisible();
+        await expect(page.getByText(/last updated/i)).toBeVisible();
+    });
+
+    test("refresh button is present and clickable", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        const refreshBtn = page.getByRole("button", { name: /refresh/i });
+        await expect(refreshBtn).toBeVisible();
+        await refreshBtn.click();
+        // After click it should still be visible (not navigate away)
+        await expect(refreshBtn).toBeVisible();
+    });
+
+    test("activity over time section is present", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        await expect(page.getByText(/activity over time/i)).toBeVisible();
+    });
+
+    test("top origins section is present", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        await expect(page.getByText(/top origins/i)).toBeVisible();
+    });
+
+    test("page heading is correct", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        await expect(
+            page.getByRole("heading", { name: /dashboard/i })
+        ).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/fixtures/index.ts b/frontend/e2e/fixtures/index.ts
new file mode 100644
index 00000000..53b342e9
--- /dev/null
+++ b/frontend/e2e/fixtures/index.ts
@@ -0,0 +1 @@
+export { mockConnectedWallet, mockDisconnectedWallet } from "./wallet";
diff --git a/frontend/e2e/fixtures/wallet.ts b/frontend/e2e/fixtures/wallet.ts
new file mode 100644
index 00000000..0a2ec3e8
--- /dev/null
+++ b/frontend/e2e/fixtures/wallet.ts
@@ -0,0 +1,34 @@
+import { Page } from "@playwright/test";
+
+/**
+ * Injects a mock connected wallet into the Zustand wallet store.
+ * This bypasses the Freighter browser extension requirement in tests.
+ */
+export async function mockConnectedWallet(
+    page: Page,
+    publicKey = "GABC1234567890ABCDEF1234567890ABCDEF1234567890ABCDEF1234567890"
+) {
+    await page.addInitScript(
+        ({ key, pk }) => {
+            // Pre-seed localStorage so the Zustand persist middleware picks it up
+            const walletState = {
+                state: {
+                    status: "connected",
+                    publicKey: pk,
+                    network: "testnet",
+                    error: null,
+                },
+                version: 0,
+            };
+            localStorage.setItem(key, JSON.stringify(walletState));
+        },
+        { key: "chain-logistics-wallet", pk: publicKey }
+    );
+}
+
+/** Clears the persisted wallet state so the page loads as disconnected. */
+export async function mockDisconnectedWallet(page: Page) {
+    await page.addInitScript(() => {
+        localStorage.removeItem("chain-logistics-wallet");
+    });
+}
diff --git a/frontend/e2e/marketing.spec.ts b/frontend/e2e/marketing.spec.ts
new file mode 100644
index 00000000..81ece07b
--- /dev/null
+++ b/frontend/e2e/marketing.spec.ts
@@ -0,0 +1,36 @@
+import { test, expect } from "@playwright/test";
+
+/**
+ * Marketing homepage — public-facing landing page.
+ * No wallet required.
+ */
+test.describe("Marketing homepage", () => {
+    test.beforeEach(async ({ page }) => {
+        await page.goto("/");
+    });
+
+    test("loads and shows hero section", async ({ page }) => {
+        await expect(page).toHaveTitle(/chain|logistics|supply/i);
+        // Hero section should be visible
+        await expect(page.locator("#main-content")).toBeVisible();
+    });
+
+    test("navigation links are present", async ({ page }) => {
+        // At least one nav element exists
+        const nav = page.locator("nav").first();
+        await expect(nav).toBeVisible();
+    });
+
+    test("CTA links to app routes", async ({ page }) => {
+        // Any link pointing to /register or /dashboard should exist
+        const ctaLink = page
+            .locator('a[href*="/register"], a[href*="/dashboard"]')
+            .first();
+        await expect(ctaLink).toBeVisible();
+    });
+
+    test("page is accessible — no critical ARIA violations", async ({ page }) => {
+        // Verify landmark regions exist
+        await expect(page.locator("main#main-content")).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/navigation.spec.ts b/frontend/e2e/navigation.spec.ts
new file mode 100644
index 00000000..097e9a55
--- /dev/null
+++ b/frontend/e2e/navigation.spec.ts
@@ -0,0 +1,74 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet } from "./fixtures";
+
+/**
+ * Navigation & routing journey.
+ * Verifies that key routes are reachable and the nav bar works.
+ */
+test.describe("Navigation", () => {
+    test("app layout nav bar is present on dashboard", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        await expect(page.locator("nav").first()).toBeVisible();
+    });
+
+    test("navigates from dashboard to products via nav", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        const productsLink = page.locator('a[href*="/products"]').first();
+        await expect(productsLink).toBeVisible();
+        await productsLink.click();
+
+        await expect(page).toHaveURL(/\/products/);
+        await expect(
+            page.getByRole("heading", { name: /products/i })
+        ).toBeVisible();
+    });
+
+    test("navigates from dashboard to register via nav", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        const registerLink = page.locator('a[href*="/register"]').first();
+        await expect(registerLink).toBeVisible();
+        await registerLink.click();
+
+        await expect(page).toHaveURL(/\/register/);
+        await expect(
+            page.getByRole("heading", { name: /product registration/i })
+        ).toBeVisible();
+    });
+
+    test("404 page renders for unknown routes", async ({ page }) => {
+        const response = await page.goto("/this-route-does-not-exist");
+        // Next.js returns 404 for unknown routes
+        expect(response?.status()).toBe(404);
+    });
+
+    test("success screen redirects to dashboard", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // Complete registration
+        await page.getByLabel(/product id/i).fill("SKU-NAV-001");
+        await page.getByLabel(/product name/i).fill("Nav Test Product");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        await page.getByLabel(/origin location/i).fill("Brazil");
+        await page.getByLabel(/category/i).selectOption("Food & Beverage");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        await page.getByRole("button", { name: /register product/i }).click();
+
+        // Wait for success screen
+        await expect(
+            page.getByRole("heading", { name: /registration successful/i })
+        ).toBeVisible({ timeout: 10_000 });
+
+        // Click "View Dashboard" button
+        await page.getByRole("button", { name: /view dashboard/i }).click();
+        await expect(page).toHaveURL(/\/dashboard/);
+    });
+});
diff --git a/frontend/e2e/product-registration.spec.ts b/frontend/e2e/product-registration.spec.ts
new file mode 100644
index 00000000..b2c77b8d
--- /dev/null
+++ b/frontend/e2e/product-registration.spec.ts
@@ -0,0 +1,137 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet, mockDisconnectedWallet } from "./fixtures";
+
+/**
+ * Product registration journey — critical user flow.
+ *
+ * Steps:
+ *  1. Navigate to /register
+ *  2. Fill Step 1 (Product ID + Name)
+ *  3. Fill Step 2 (Origin + Category + optional Description)
+ *  4. Review Step 3 and submit
+ *  5. See success screen with transaction hash
+ */
+test.describe("Product registration", () => {
+    test("shows wallet warning on review step when disconnected", async ({
+        page,
+    }) => {
+        await mockDisconnectedWallet(page);
+        await page.goto("/register");
+
+        // Step 1
+        await page.getByLabel(/product id/i).fill("TEST-001");
+        await page.getByLabel(/product name/i).fill("Test Coffee Beans");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Step 2
+        await page.getByLabel(/origin location/i).fill("Ethiopia");
+        await page.getByLabel(/category/i).selectOption("Food & Beverage");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Step 3 — review
+        await expect(page.getByText(/TEST-001/)).toBeVisible();
+        await expect(page.getByText(/Test Coffee Beans/)).toBeVisible();
+        await expect(page.getByText(/Ethiopia/)).toBeVisible();
+
+        // Wallet warning should appear
+        await expect(
+            page.getByRole("alert").filter({ hasText: /connect.*wallet/i })
+        ).toBeVisible();
+
+        // Submit button should be disabled
+        await expect(
+            page.getByRole("button", { name: /register product/i })
+        ).toBeDisabled();
+    });
+
+    test("completes full registration flow with connected wallet", async ({
+        page,
+    }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // Step 1 — Basic Info
+        await expect(
+            page.getByRole("heading", { name: /basic product information/i })
+        ).toBeVisible();
+        await page.getByLabel(/product id/i).fill("SKU-E2E-001");
+        await page.getByLabel(/product name/i).fill("E2E Test Product");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Step 2 — Origin & Category
+        await expect(
+            page.getByRole("heading", { name: /origin.*category/i })
+        ).toBeVisible();
+        await page.getByLabel(/origin location/i).fill("Colombia");
+        await page.getByLabel(/category/i).selectOption("Food & Beverage");
+        await page.getByLabel(/description/i).fill("An E2E test product");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Step 3 — Review
+        await expect(
+            page.getByRole("heading", { name: /review/i })
+        ).toBeVisible();
+        await expect(page.getByText("SKU-E2E-001")).toBeVisible();
+        await expect(page.getByText("E2E Test Product")).toBeVisible();
+        await expect(page.getByText("Colombia")).toBeVisible();
+        await expect(page.getByText("Food & Beverage")).toBeVisible();
+
+        // Submit
+        const submitBtn = page.getByRole("button", { name: /register product/i });
+        await expect(submitBtn).toBeEnabled();
+        await submitBtn.click();
+
+        // Success screen
+        await expect(
+            page.getByRole("heading", { name: /registration successful/i })
+        ).toBeVisible({ timeout: 10_000 });
+        await expect(page.getByText(/transaction hash/i)).toBeVisible();
+    });
+
+    test("validates required fields before advancing", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // Try to advance without filling anything
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Should stay on step 1 and show validation errors
+        await expect(
+            page.getByRole("heading", { name: /basic product information/i })
+        ).toBeVisible();
+        // At least one error message should appear
+        await expect(page.locator('[role="alert"]').first()).toBeVisible();
+    });
+
+    test("back button navigates to previous step", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        await page.getByLabel(/product id/i).fill("SKU-BACK-001");
+        await page.getByLabel(/product name/i).fill("Back Test");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Now on step 2 — go back
+        await page.getByRole("button", { name: /back/i }).click();
+
+        // Should be back on step 1 with values preserved
+        await expect(
+            page.getByRole("heading", { name: /basic product information/i })
+        ).toBeVisible();
+    });
+
+    test("step indicator reflects current step", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/register");
+
+        // Step 1 indicator active
+        await expect(page.getByText(/basic info/i)).toBeVisible();
+
+        await page.getByLabel(/product id/i).fill("SKU-STEP-001");
+        await page.getByLabel(/product name/i).fill("Step Test");
+        await page.getByRole("button", { name: /next/i }).click();
+
+        // Step 2 indicator visible
+        await expect(page.getByText(/origin details/i)).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/product-tracking.spec.ts b/frontend/e2e/product-tracking.spec.ts
new file mode 100644
index 00000000..149a80cc
--- /dev/null
+++ b/frontend/e2e/product-tracking.spec.ts
@@ -0,0 +1,44 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet } from "./fixtures";
+
+/**
+ * Product tracking / timeline journey.
+ * Tests the /products/[id] detail page and /tracking route.
+ */
+test.describe("Product tracking", () => {
+    test("product detail page renders with product ID", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products/PROD-001");
+
+        await expect(
+            page.getByRole("heading", { name: /product tracking/i })
+        ).toBeVisible();
+
+        // Product ID should be displayed
+        await expect(page.getByText("PROD-001")).toBeVisible();
+    });
+
+    test("supply chain timeline section is present", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products/PROD-001");
+
+        await expect(page.getByText(/supply chain timeline/i)).toBeVisible();
+    });
+
+    test("tracking page renders", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/tracking");
+
+        await expect(
+            page.getByRole("heading", { name: /event tracking/i })
+        ).toBeVisible();
+    });
+
+    test("add tracking event page renders", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/tracking/add");
+
+        // Page should load without crashing
+        await expect(page.locator("main")).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/products.spec.ts b/frontend/e2e/products.spec.ts
new file mode 100644
index 00000000..9af693df
--- /dev/null
+++ b/frontend/e2e/products.spec.ts
@@ -0,0 +1,66 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet, mockDisconnectedWallet } from "./fixtures";
+
+/**
+ * Products listing & filtering journey.
+ */
+test.describe("Products page", () => {
+    test("renders page heading", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products");
+
+        await expect(
+            page.getByRole("heading", { name: /products/i })
+        ).toBeVisible();
+    });
+
+    test("shows product cards when wallet is connected (mock data in dev)", async ({
+        page,
+    }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products");
+
+        // Wait for loading to finish — either products appear or empty state
+        await page.waitForLoadState("networkidle");
+
+        // The product list or empty state should be visible
+        const productList = page.locator('[data-testid="product-list"], .product-card, [class*="ProductCard"]');
+        const emptyState = page.getByText(/no products/i);
+
+        // One of these should be present
+        const hasProducts = await productList.count() > 0;
+        const hasEmpty = await emptyState.isVisible().catch(() => false);
+        expect(hasProducts || hasEmpty).toBeTruthy();
+    });
+
+    test("search input is present and interactive", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products");
+
+        const searchInput = page.getByPlaceholder(/search/i).first();
+        await expect(searchInput).toBeVisible();
+        await searchInput.fill("coffee");
+        await expect(searchInput).toHaveValue("coffee");
+    });
+
+    test("category filter is present", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products");
+
+        // Category filter select or input should exist
+        const categoryFilter = page
+            .locator('select, [role="combobox"]')
+            .filter({ hasText: /category|all/i })
+            .first();
+        await expect(categoryFilter).toBeVisible();
+    });
+
+    test("shows connect prompt when disconnected", async ({ page }) => {
+        await mockDisconnectedWallet(page);
+        await page.goto("/products");
+
+        await expect(
+            page.getByText(/connect.*wallet/i).first()
+        ).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/verification.spec.ts b/frontend/e2e/verification.spec.ts
new file mode 100644
index 00000000..3bae8a8b
--- /dev/null
+++ b/frontend/e2e/verification.spec.ts
@@ -0,0 +1,42 @@
+import { test, expect } from "@playwright/test";
+
+/**
+ * Product verification journey — public page, no wallet required.
+ * Consumers scan a QR code and land on /verify/[id].
+ */
+test.describe("Product verification", () => {
+    test("verify page renders for a given product ID", async ({ page }) => {
+        await page.goto("/verify/PROD-001");
+
+        await expect(
+            page.getByRole("heading", { name: /verified authentic/i })
+        ).toBeVisible();
+    });
+
+    test("displays the product ID on the verify page", async ({ page }) => {
+        await page.goto("/verify/TEST-PRODUCT-XYZ");
+
+        await expect(page.getByText("TEST-PRODUCT-XYZ")).toBeVisible();
+    });
+
+    test("shows supply chain journey section", async ({ page }) => {
+        await page.goto("/verify/PROD-001");
+
+        await expect(page.getByText(/supply chain journey/i)).toBeVisible();
+    });
+
+    test("shows current status badge", async ({ page }) => {
+        await page.goto("/verify/PROD-001");
+
+        await expect(page.getByText(/ready for sale/i)).toBeVisible();
+    });
+
+    test("verify page works without wallet connection", async ({ page }) => {
+        // No wallet mock — should still load
+        await page.goto("/verify/PUBLIC-PRODUCT-001");
+
+        await expect(
+            page.getByRole("heading", { name: /verified authentic/i })
+        ).toBeVisible();
+    });
+});
diff --git a/frontend/e2e/wallet-connection.spec.ts b/frontend/e2e/wallet-connection.spec.ts
new file mode 100644
index 00000000..fb5cf021
--- /dev/null
+++ b/frontend/e2e/wallet-connection.spec.ts
@@ -0,0 +1,46 @@
+import { test, expect } from "@playwright/test";
+import { mockConnectedWallet, mockDisconnectedWallet } from "./fixtures";
+
+/**
+ * Wallet connection journey.
+ * The Freighter extension is not available in CI, so we test the UI states
+ * that appear when the wallet is connected vs. disconnected.
+ */
+test.describe("Wallet connection", () => {
+    test("shows connect prompt when wallet is disconnected", async ({ page }) => {
+        await mockDisconnectedWallet(page);
+        await page.goto("/dashboard");
+
+        // Dashboard should prompt the user to connect
+        await expect(
+            page.getByText(/connect.*wallet|connect a wallet/i).first()
+        ).toBeVisible();
+    });
+
+    test("dashboard loads data when wallet is connected", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/dashboard");
+
+        // Stat cards should render (even with 0 values from mock data)
+        await expect(page.getByText(/total products/i)).toBeVisible();
+        await expect(page.getByText(/total events/i)).toBeVisible();
+    });
+
+    test("products page shows connect prompt when disconnected", async ({
+        page,
+    }) => {
+        await mockDisconnectedWallet(page);
+        await page.goto("/products");
+
+        await expect(
+            page.getByText(/connect.*wallet/i).first()
+        ).toBeVisible();
+    });
+
+    test("products page loads when wallet is connected", async ({ page }) => {
+        await mockConnectedWallet(page);
+        await page.goto("/products");
+
+        await expect(page.getByRole("heading", { name: /products/i })).toBeVisible();
+    });
+});
diff --git a/frontend/eslint.config.mjs b/frontend/eslint.config.mjs
new file mode 100644
index 00000000..05e726d1
--- /dev/null
+++ b/frontend/eslint.config.mjs
@@ -0,0 +1,18 @@
+import { defineConfig, globalIgnores } from "eslint/config";
+import nextVitals from "eslint-config-next/core-web-vitals";
+import nextTs from "eslint-config-next/typescript";
+
+const eslintConfig = defineConfig([
+  ...nextVitals,
+  ...nextTs,
+  // Override default ignores of eslint-config-next.
+  globalIgnores([
+    // Default ignores of eslint-config-next:
+    ".next/**",
+    "out/**",
+    "build/**",
+    "next-env.d.ts",
+  ]),
+]);
+
+export default eslintConfig;
diff --git a/frontend/lib/analytics.ts b/frontend/lib/analytics.ts
new file mode 100644
index 00000000..d49df78e
--- /dev/null
+++ b/frontend/lib/analytics.ts
@@ -0,0 +1,246 @@
+import type { Metric } from "web-vitals";
+
+type MonitoringEventType =
+  | "web_vital"
+  | "contract_interaction"
+  | "error"
+  | "performance_budget_breach";
+
+/** Structured data attached to monitoring payloads. */
+export type MonitoringData = Record<string, string | number | boolean | undefined>;
+
+type MonitoringPayload = {
+  type: MonitoringEventType;
+  timestamp: string;
+  route?: string;
+  environment: string;
+  data: MonitoringData;
+};
+
+/** Context attached to a performance-budget alert. */
+export type BudgetAlertContext = {
+  method?: string;
+  success?: boolean;
+  [key: string]: string | number | boolean | undefined;
+};
+
+export type PerformanceBudgetAlert = {
+  metric: string;
+  severity: "warning" | "critical";
+  value: number;
+  warningThreshold: number;
+  criticalThreshold: number;
+  context?: BudgetAlertContext;
+};
+
+const WEB_VITAL_BUDGETS = {
+  CLS: { warning: 0.1, critical: 0.25 },
+  FCP: { warning: 1800, critical: 3000 },
+  LCP: { warning: 2500, critical: 4000 },
+  INP: { warning: 200, critical: 500 },
+  TTFB: { warning: 800, critical: 1800 },
+} as const;
+
+const CONTRACT_INTERACTION_BUDGET_MS = { warning: 1200, critical: 2500 } as const;
+
+const budgetAlertSubscribers = new Set<(alert: PerformanceBudgetAlert) => void>();
+let monitoringInitialized = false;
+
+function getEnvironment(): string {
+  return process.env.NODE_ENV ?? "development";
+}
+
+function getCurrentRoute(): string | undefined {
+  if (typeof window === "undefined") return undefined;
+  return window.location.pathname;
+}
+
+function getMonitoringEndpoint(): string | undefined {
+  const endpoint = process.env.NEXT_PUBLIC_MONITORING_ENDPOINT;
+  if (!endpoint || !endpoint.trim()) return undefined;
+  return endpoint.trim();
+}
+
+function notifyBudgetAlert(alert: PerformanceBudgetAlert): void {
+  budgetAlertSubscribers.forEach((callback) => callback(alert));
+}
+
+function checkBudget(
+  metric: string,
+  value: number,
+  thresholds: { warning: number; critical: number },
+  context?: BudgetAlertContext
+): void {
+  let severity: "warning" | "critical" | null = null;
+
+  if (value >= thresholds.critical) {
+    severity = "critical";
+  } else if (value >= thresholds.warning) {
+    severity = "warning";
+  }
+
+  if (!severity) return;
+
+  const alert: PerformanceBudgetAlert = {
+    metric,
+    severity,
+    value,
+    warningThreshold: thresholds.warning,
+    criticalThreshold: thresholds.critical,
+    context,
+  };
+
+  notifyBudgetAlert(alert);
+  void sendMonitoringPayload({
+    type: "performance_budget_breach",
+    data: {
+      metric: alert.metric,
+      severity: alert.severity,
+      value: alert.value,
+      warningThreshold: alert.warningThreshold,
+      criticalThreshold: alert.criticalThreshold,
+      ...alert.context,
+    },
+  });
+}
+
+async function sendMonitoringPayload(event: {
+  type: MonitoringEventType;
+  data: MonitoringData;
+}): Promise<void> {
+  const payload: MonitoringPayload = {
+    type: event.type,
+    data: event.data,
+    timestamp: new Date().toISOString(),
+    environment: getEnvironment(),
+    route: getCurrentRoute(),
+  };
+
+  const endpoint = getMonitoringEndpoint();
+  if (!endpoint) {
+    if (getEnvironment() !== "production") {
+      console.info("[monitoring]", payload);
+    }
+    return;
+  }
+
+  try {
+    await fetch(endpoint, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify(payload),
+      keepalive: true,
+    });
+  } catch (error) {
+    if (getEnvironment() !== "production") {
+      console.error("[monitoring] failed to send payload", error);
+    }
+  }
+}
+
+export function subscribeToBudgetAlerts(
+  callback: (alert: PerformanceBudgetAlert) => void
+): () => void {
+  budgetAlertSubscribers.add(callback);
+  return () => {
+    budgetAlertSubscribers.delete(callback);
+  };
+}
+
+export function trackWebVital(metric: Metric): void {
+  const safeValue = Number(metric.value ?? 0);
+  void sendMonitoringPayload({
+    type: "web_vital",
+    data: {
+      name: metric.name,
+      id: metric.id,
+      value: safeValue,
+      rating: metric.rating,
+      delta: metric.delta,
+      navigationType: metric.navigationType,
+    },
+  });
+
+  const budget = WEB_VITAL_BUDGETS[metric.name as keyof typeof WEB_VITAL_BUDGETS];
+  if (budget) {
+    checkBudget(metric.name, safeValue, budget);
+  }
+}
+
+export function trackContractInteraction(params: {
+  method: string;
+  durationMs: number;
+  success: boolean;
+  errorMessage?: string;
+  context?: BudgetAlertContext;
+}): void {
+  const durationMs = Number(params.durationMs);
+  void sendMonitoringPayload({
+    type: "contract_interaction",
+    data: {
+      method: params.method,
+      durationMs,
+      success: params.success,
+      errorMessage: params.errorMessage,
+      ...params.context,
+    },
+  });
+
+  checkBudget("CONTRACT_INTERACTION_MS", durationMs, CONTRACT_INTERACTION_BUDGET_MS, {
+    method: params.method,
+    success: params.success,
+  });
+}
+
+export function trackError(error: unknown, context?: MonitoringData): void {
+  const normalizedError =
+    error instanceof Error
+      ? {
+          message: error.message,
+          stack: error.stack,
+          name: error.name,
+        }
+      : {
+          message: String(error),
+        };
+
+  void sendMonitoringPayload({
+    type: "error",
+    data: {
+      ...normalizedError,
+      ...context,
+    },
+  });
+}
+
+export function initMonitoring(): void {
+  if (monitoringInitialized || typeof window === "undefined") return;
+  monitoringInitialized = true;
+
+  window.addEventListener("error", (event) => {
+    trackError(event.error ?? event.message, {
+      source: "window.error",
+      filename: event.filename,
+      lineno: event.lineno,
+      colno: event.colno,
+    });
+  });
+
+  window.addEventListener("unhandledrejection", (event) => {
+    trackError(event.reason, {
+      source: "window.unhandledrejection",
+    });
+  });
+}
+
+export async function startWebVitalsTracking(): Promise<void> {
+  if (typeof window === "undefined") return;
+
+  const { onCLS, onFCP, onINP, onLCP, onTTFB } = await import("web-vitals");
+  onCLS(trackWebVital);
+  onFCP(trackWebVital);
+  onINP(trackWebVital);
+  onLCP(trackWebVital);
+  onTTFB(trackWebVital);
+}
+
diff --git a/frontend/lib/blockchain/config.ts b/frontend/lib/blockchain/config.ts
new file mode 100644
index 00000000..64df8a93
--- /dev/null
+++ b/frontend/lib/blockchain/config.ts
@@ -0,0 +1,79 @@
+import { BlockchainConfig, BlockchainNetwork } from './types';
+
+const BLOCKCHAIN_CONFIGS: Record<BlockchainNetwork, BlockchainConfig> = {
+    stellar: {
+        network: 'stellar',
+        rpcUrl: process.env.NEXT_PUBLIC_STELLAR_RPC_URL || 'https://soroban-testnet.stellar.org',
+        contractAddress: process.env.NEXT_PUBLIC_STELLAR_CONTRACT_ID || '',
+        nativeToken: 'XLM',
+        explorerUrl: 'https://stellar.expert',
+        confirmationBlocks: 1,
+    },
+    ethereum: {
+        network: 'ethereum',
+        rpcUrl: process.env.NEXT_PUBLIC_ETH_RPC_URL || 'https://eth-mainnet.g.alchemy.com/v2/',
+        chainId: 1,
+        contractAddress: process.env.NEXT_PUBLIC_ETH_CONTRACT_ID || '',
+        nativeToken: 'ETH',
+        explorerUrl: 'https://etherscan.io',
+        confirmationBlocks: 12,
+    },
+    polygon: {
+        network: 'polygon',
+        rpcUrl: process.env.NEXT_PUBLIC_POLYGON_RPC_URL || 'https://polygon-rpc.com',
+        chainId: 137,
+        contractAddress: process.env.NEXT_PUBLIC_POLYGON_CONTRACT_ID || '',
+        nativeToken: 'MATIC',
+        explorerUrl: 'https://polygonscan.com',
+        confirmationBlocks: 128,
+    },
+    hyperledger: {
+        network: 'hyperledger',
+        rpcUrl: process.env.NEXT_PUBLIC_HYPERLEDGER_RPC_URL || '',
+        contractAddress: process.env.NEXT_PUBLIC_HYPERLEDGER_CONTRACT_ID || '',
+        nativeToken: 'HLF',
+        explorerUrl: '',
+        confirmationBlocks: 1,
+    },
+    corda: {
+        network: 'corda',
+        rpcUrl: process.env.NEXT_PUBLIC_CORDA_RPC_URL || '',
+        contractAddress: process.env.NEXT_PUBLIC_CORDA_CONTRACT_ID || '',
+        nativeToken: 'CORDA',
+        explorerUrl: '',
+        confirmationBlocks: 1,
+    },
+    quorum: {
+        network: 'quorum',
+        rpcUrl: process.env.NEXT_PUBLIC_QUORUM_RPC_URL || '',
+        chainId: 1337,
+        contractAddress: process.env.NEXT_PUBLIC_QUORUM_CONTRACT_ID || '',
+        nativeToken: 'ETH',
+        explorerUrl: '',
+        confirmationBlocks: 1,
+    },
+};
+
+export function getBlockchainConfig(network: BlockchainNetwork): BlockchainConfig {
+    const config = BLOCKCHAIN_CONFIGS[network];
+    if (!config) {
+        throw new Error(`Unsupported blockchain network: ${network}`);
+    }
+    return config;
+}
+
+export function getSupportedNetworks(): BlockchainNetwork[] {
+    return Object.keys(BLOCKCHAIN_CONFIGS) as BlockchainNetwork[];
+}
+
+export function getNetworkName(network: BlockchainNetwork): string {
+    const names: Record<BlockchainNetwork, string> = {
+        stellar: 'Stellar',
+        ethereum: 'Ethereum',
+        polygon: 'Polygon',
+        hyperledger: 'Hyperledger Fabric',
+        corda: 'Corda',
+        quorum: 'Quorum',
+    };
+    return names[network];
+}
diff --git a/frontend/lib/blockchain/factory.ts b/frontend/lib/blockchain/factory.ts
new file mode 100644
index 00000000..3b7dadbd
--- /dev/null
+++ b/frontend/lib/blockchain/factory.ts
@@ -0,0 +1,44 @@
+import { BlockchainProvider, BlockchainNetwork } from './types';
+import { StellarProvider } from './providers/stellar';
+import { EVMProvider } from './providers/evm';
+
+class BlockchainProviderFactory {
+    private providers: Map<BlockchainNetwork, BlockchainProvider> = new Map();
+
+    getProvider(network: BlockchainNetwork): BlockchainProvider {
+        if (this.providers.has(network)) {
+            return this.providers.get(network)!;
+        }
+
+        let provider: BlockchainProvider;
+
+        switch (network) {
+            case 'stellar':
+                provider = new StellarProvider();
+                break;
+            case 'ethereum':
+            case 'polygon':
+            case 'quorum':
+                provider = new EVMProvider(network);
+                break;
+            case 'hyperledger':
+            case 'corda':
+                throw new Error(`${network} provider not yet implemented`);
+            default:
+                throw new Error(`Unknown blockchain network: ${network}`);
+        }
+
+        this.providers.set(network, provider);
+        return provider;
+    }
+
+    clearProvider(network: BlockchainNetwork): void {
+        this.providers.delete(network);
+    }
+
+    clearAll(): void {
+        this.providers.clear();
+    }
+}
+
+export const blockchainFactory = new BlockchainProviderFactory();
diff --git a/frontend/lib/blockchain/providers/base.ts b/frontend/lib/blockchain/providers/base.ts
new file mode 100644
index 00000000..62b11afc
--- /dev/null
+++ b/frontend/lib/blockchain/providers/base.ts
@@ -0,0 +1,22 @@
+import { BlockchainProvider, WalletConnection, Transaction } from '../types';
+import { BlockchainNetwork } from '../types';
+
+export abstract class BaseBlockchainProvider implements BlockchainProvider {
+    abstract network: BlockchainNetwork;
+
+    abstract connect(): Promise<WalletConnection>;
+    abstract disconnect(): Promise<void>;
+    abstract getBalance(address: string): Promise<string>;
+    abstract sendTransaction(tx: Partial<Transaction>): Promise<string>;
+    abstract getTransaction(hash: string): Promise<Transaction>;
+    abstract callContract(method: string, params: Record<string, unknown>[]): Promise<Record<string, unknown>>;
+    abstract estimateGas(tx: Partial<Transaction>): Promise<string>;
+
+    protected validateAddress(address: string): boolean {
+        return address.length > 0;
+    }
+
+    protected validateHash(hash: string): boolean {
+        return hash.length > 0;
+    }
+}
diff --git a/frontend/lib/blockchain/providers/evm.ts b/frontend/lib/blockchain/providers/evm.ts
new file mode 100644
index 00000000..e4c2320d
--- /dev/null
+++ b/frontend/lib/blockchain/providers/evm.ts
@@ -0,0 +1,199 @@
+import { BaseBlockchainProvider } from './base';
+import { WalletConnection, Transaction, BlockchainNetwork } from '../types';
+import { getBlockchainConfig } from '../config';
+
+export class EVMProvider extends BaseBlockchainProvider {
+    network: BlockchainNetwork;
+    private provider: Record<string, unknown> | null = null;
+    private signer: Record<string, unknown> | null = null;
+
+    constructor(network: BlockchainNetwork) {
+        super();
+        if (!['ethereum', 'polygon', 'quorum'].includes(network)) {
+            throw new Error(`Invalid EVM network: ${network}`);
+        }
+        this.network = network;
+    }
+
+    async connect(): Promise<WalletConnection> {
+        try {
+            if (typeof window === 'undefined') {
+                throw new Error('EVM wallet requires browser environment');
+            }
+
+            const ethereum = (window as unknown as Record<string, unknown>).ethereum as Record<string, unknown> | undefined;
+            if (!ethereum) {
+                throw new Error('MetaMask or compatible wallet not installed');
+            }
+
+            const config = getBlockchainConfig(this.network);
+            const accounts = await (ethereum.request as (args: Record<string, unknown>) => Promise<string[]>)({ method: 'eth_requestAccounts' });
+
+            // Switch to correct chain
+            try {
+                await (ethereum.request as (args: Record<string, unknown>) => Promise<void>)({
+                    method: 'wallet_switchEthereumChain',
+                    params: [{ chainId: `0x${config.chainId?.toString(16)}` }],
+                });
+            } catch (switchError: unknown) {
+                const error = switchError as Record<string, unknown>;
+                if (error.code === 4902) {
+                    // Chain not added, user needs to add it manually
+                    throw new Error(`Please add ${this.network} network to your wallet`);
+                }
+            }
+
+            this.provider = ethereum;
+            return {
+                address: accounts[0],
+                network: this.network,
+                isConnected: true,
+                chainId: config.chainId,
+            };
+        } catch (error) {
+            throw new Error(`Failed to connect EVM wallet: ${error}`);
+        }
+    }
+
+    async disconnect(): Promise<void> {
+        this.provider = null;
+        this.signer = null;
+    }
+
+    async getBalance(address: string): Promise<string> {
+        if (!this.validateAddress(address)) {
+            throw new Error('Invalid EVM address');
+        }
+
+        try {
+            const config = getBlockchainConfig(this.network);
+            const response = await fetch(config.rpcUrl, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    jsonrpc: '2.0',
+                    method: 'eth_getBalance',
+                    params: [address, 'latest'],
+                    id: 1,
+                }),
+            });
+
+            const data = await response.json();
+            return (BigInt(data.result) / BigInt(10 ** 18)).toString();
+        } catch (error) {
+            throw new Error(`Failed to get EVM balance: ${error}`);
+        }
+    }
+
+    async sendTransaction(tx: Partial<Transaction>): Promise<string> {
+        if (!this.provider) {
+            throw new Error('Wallet not connected');
+        }
+
+        try {
+            const hash = await (this.provider.request as (args: Record<string, unknown>) => Promise<string>)({
+                method: 'eth_sendTransaction',
+                params: [{
+                    from: tx.from,
+                    to: tx.to,
+                    value: tx.value,
+                    data: tx.data,
+                    gas: tx.gasLimit,
+                    gasPrice: tx.gasPrice,
+                }],
+            });
+
+            return hash;
+        } catch (error) {
+            throw new Error(`Failed to send EVM transaction: ${error}`);
+        }
+    }
+
+    async getTransaction(hash: string): Promise<Transaction> {
+        if (!this.validateHash(hash)) {
+            throw new Error('Invalid transaction hash');
+        }
+
+        try {
+            const config = getBlockchainConfig(this.network);
+            const response = await fetch(config.rpcUrl, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    jsonrpc: '2.0',
+                    method: 'eth_getTransactionReceipt',
+                    params: [hash],
+                    id: 1,
+                }),
+            });
+
+            const data = await response.json();
+            const receipt = data.result;
+
+            return {
+                hash,
+                from: receipt.from,
+                to: receipt.to,
+                value: receipt.value,
+                status: receipt.status === '0x1' ? 'confirmed' : 'failed',
+                confirmations: receipt.blockNumber ? 1 : 0,
+                timestamp: Date.now(),
+            };
+        } catch (error) {
+            throw new Error(`Failed to get EVM transaction: ${error}`);
+        }
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    async callContract(method: string, _params: Record<string, unknown>[]): Promise<Record<string, unknown>> {
+        if (!this.provider) {
+            throw new Error('Wallet not connected');
+        }
+
+        try {
+            const config = getBlockchainConfig(this.network);
+            // This is a simplified call - actual implementation would use ethers.js or web3.js
+            const result = await (this.provider.request as (args: Record<string, unknown>) => Promise<Record<string, unknown>>)({
+                method: 'eth_call',
+                params: [{
+                    to: config.contractAddress,
+                    data: method,
+                }],
+            });
+
+            return result;
+        } catch (error) {
+            throw new Error(`Failed to call EVM contract: ${error}`);
+        }
+    }
+
+    async estimateGas(tx: Partial<Transaction>): Promise<string> {
+        if (!this.provider) {
+            throw new Error('Wallet not connected');
+        }
+
+        try {
+            const config = getBlockchainConfig(this.network);
+            const response = await fetch(config.rpcUrl, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json' },
+                body: JSON.stringify({
+                    jsonrpc: '2.0',
+                    method: 'eth_estimateGas',
+                    params: [{
+                        from: tx.from,
+                        to: tx.to,
+                        value: tx.value,
+                        data: tx.data,
+                    }],
+                    id: 1,
+                }),
+            });
+
+            const data = await response.json();
+            return data.result;
+        } catch (error) {
+            throw new Error(`Failed to estimate EVM gas: ${error}`);
+        }
+    }
+}
diff --git a/frontend/lib/blockchain/providers/stellar.ts b/frontend/lib/blockchain/providers/stellar.ts
new file mode 100644
index 00000000..74cca58d
--- /dev/null
+++ b/frontend/lib/blockchain/providers/stellar.ts
@@ -0,0 +1,114 @@
+import { BaseBlockchainProvider } from './base';
+import { WalletConnection, Transaction, BlockchainNetwork } from '../types';
+import { getBlockchainConfig } from '../config';
+
+export class StellarProvider extends BaseBlockchainProvider {
+    network: BlockchainNetwork = 'stellar';
+    private wallet: Record<string, unknown> | null = null;
+
+    async connect(): Promise<WalletConnection> {
+        try {
+            if (typeof window === 'undefined') {
+                throw new Error('Stellar wallet requires browser environment');
+            }
+
+            const freighter = (window as unknown as Record<string, unknown>).freighter as Record<string, unknown> | undefined;
+            if (!freighter) {
+                throw new Error('Freighter wallet not installed');
+            }
+
+            const publicKey = await (freighter.getPublicKey as () => Promise<string>)();
+            this.wallet = freighter;
+
+            return {
+                address: publicKey,
+                network: this.network,
+                isConnected: true,
+            };
+        } catch (error) {
+            throw new Error(`Failed to connect Stellar wallet: ${error}`);
+        }
+    }
+
+    async disconnect(): Promise<void> {
+        this.wallet = null;
+    }
+
+    async getBalance(address: string): Promise<string> {
+        if (!this.validateAddress(address)) {
+            throw new Error('Invalid Stellar address');
+        }
+
+        try {
+            const config = getBlockchainConfig('stellar');
+            const response = await fetch(`${config.rpcUrl}/accounts/${address}`);
+            const data = await response.json();
+
+            const nativeBalance = data.balances.find((b: Record<string, unknown>) => b.asset_type === 'native');
+            return nativeBalance?.balance || '0';
+        } catch (error) {
+            throw new Error(`Failed to get Stellar balance: ${error}`);
+        }
+    }
+
+    async sendTransaction(tx: Partial<Transaction>): Promise<string> {
+        if (!this.wallet) {
+            throw new Error('Wallet not connected');
+        }
+
+        try {
+            // Stellar transaction signing via Freighter
+            const result = await (this.wallet.signTransaction as (data: unknown) => Promise<Record<string, unknown>>)(tx.data);
+            return (result.hash as string) || '';
+        } catch (error) {
+            throw new Error(`Failed to send Stellar transaction: ${error}`);
+        }
+    }
+
+    async getTransaction(hash: string): Promise<Transaction> {
+        if (!this.validateHash(hash)) {
+            throw new Error('Invalid transaction hash');
+        }
+
+        try {
+            const config = getBlockchainConfig('stellar');
+            const response = await fetch(`${config.rpcUrl}/transactions/${hash}`);
+            const data = await response.json();
+
+            return {
+                hash: data.hash,
+                from: data.source_account,
+                to: '',
+                value: '0',
+                status: data.successful ? 'confirmed' : 'failed',
+                confirmations: 1,
+                timestamp: new Date(data.created_at).getTime(),
+            };
+        } catch (error) {
+            throw new Error(`Failed to get Stellar transaction: ${error}`);
+        }
+    }
+
+    async callContract(method: string, params: Record<string, unknown>[]): Promise<Record<string, unknown>> {
+        if (!this.wallet) {
+            throw new Error('Wallet not connected');
+        }
+
+        try {
+            // Soroban contract invocation
+            const result = await (this.wallet.invokeContract as (args: Record<string, unknown>) => Promise<Record<string, unknown>>)({
+                method,
+                params,
+            });
+            return result;
+        } catch (error) {
+            throw new Error(`Failed to call Stellar contract: ${error}`);
+        }
+    }
+
+    // eslint-disable-next-line @typescript-eslint/no-unused-vars
+    async estimateGas(_tx: Partial<Transaction>): Promise<string> {
+        // Stellar uses fixed fees
+        return '100'; // stroops
+    }
+}
diff --git a/frontend/lib/blockchain/types.ts b/frontend/lib/blockchain/types.ts
new file mode 100644
index 00000000..6def023c
--- /dev/null
+++ b/frontend/lib/blockchain/types.ts
@@ -0,0 +1,52 @@
+// Multi-chain blockchain abstraction types
+export type BlockchainNetwork = 'stellar' | 'ethereum' | 'polygon' | 'hyperledger' | 'corda' | 'quorum';
+
+export interface BlockchainConfig {
+    network: BlockchainNetwork;
+    rpcUrl: string;
+    chainId?: number; // For EVM chains
+    contractAddress: string;
+    nativeToken: string;
+    explorerUrl: string;
+    confirmationBlocks: number;
+}
+
+export interface WalletConnection {
+    address: string;
+    network: BlockchainNetwork;
+    isConnected: boolean;
+    balance?: string;
+    chainId?: number;
+}
+
+export interface Transaction {
+    hash: string;
+    from: string;
+    to: string;
+    value: string;
+    data?: string;
+    gasPrice?: string;
+    gasLimit?: string;
+    nonce?: number;
+    status: 'pending' | 'confirmed' | 'failed';
+    confirmations: number;
+    timestamp: number;
+}
+
+export interface SmartContractMethod {
+    name: string;
+    inputs: Array<{ name: string; type: string }>;
+    outputs: Array<{ name: string; type: string }>;
+    stateMutability: 'pure' | 'view' | 'nonpayable' | 'payable';
+}
+
+export interface BlockchainProvider {
+    network: BlockchainNetwork;
+    connect(): Promise<WalletConnection>;
+    disconnect(): Promise<void>;
+    getBalance(address: string): Promise<string>;
+    sendTransaction(tx: Partial<Transaction>): Promise<string>;
+    getTransaction(hash: string): Promise<Transaction>;
+    callContract(method: string, params: Record<string, unknown>[]): Promise<Record<string, unknown>>;
+    estimateGas(tx: Partial<Transaction>): Promise<string>;
+}
diff --git a/frontend/lib/constants.ts b/frontend/lib/constants.ts
new file mode 100644
index 00000000..3529f49e
--- /dev/null
+++ b/frontend/lib/constants.ts
@@ -0,0 +1,36 @@
+/**
+ * Centralized configuration constants for the frontend application.
+ *
+ * Collecting magic numbers and hardcoded values here improves
+ * maintainability and makes configuration changes straightforward.
+ */
+
+// ---------------------------------------------------------------------------
+// UI Timing (milliseconds)
+// ---------------------------------------------------------------------------
+
+/** Duration a "copied" tooltip stays visible after clipboard copy. */
+export const COPY_FEEDBACK_DURATION_MS = 2000;
+
+/** Simulated delay for product registration placeholder. */
+export const PRODUCT_REGISTRATION_DELAY_MS = 2000;
+
+/** Simulated delay for event tracking form submission placeholder. */
+export const EVENT_TRACKING_SUBMIT_DELAY_MS = 1500;
+
+// ---------------------------------------------------------------------------
+// Dashboard
+// ---------------------------------------------------------------------------
+
+/** Default polling interval for the dashboard auto-refresh (ms). */
+export const DASHBOARD_REFRESH_INTERVAL_MS = 30_000;
+
+/** Number of recent events shown in the dashboard activity feed. */
+export const DASHBOARD_RECENT_EVENTS_LIMIT = 12;
+
+// ---------------------------------------------------------------------------
+// Wallet
+// ---------------------------------------------------------------------------
+
+/** Timeout for wallet connection requests (ms). */
+export const WALLET_CONNECTION_TIMEOUT_MS = 20_000;
diff --git a/frontend/lib/contract/config.ts b/frontend/lib/contract/config.ts
new file mode 100644
index 00000000..e3d96366
--- /dev/null
+++ b/frontend/lib/contract/config.ts
@@ -0,0 +1,22 @@
+export const CONTRACT_CONFIG = {
+  CONTRACT_ID: process.env.NEXT_PUBLIC_CONTRACT_ID || "",
+  NETWORK: (process.env.NEXT_PUBLIC_STELLAR_NETWORK || "testnet") as
+    | "testnet"
+    | "mainnet"
+    | "futurenet",
+  RPC_URL:
+    process.env.NEXT_PUBLIC_RPC_URL ||
+    (process.env.NEXT_PUBLIC_STELLAR_NETWORK === "mainnet"
+      ? "https://soroban-rpc.mainnet.stellar.org"
+      : process.env.NEXT_PUBLIC_STELLAR_NETWORK === "futurenet"
+        ? "https://rpc-futurenet.stellar.org"
+        : "https://soroban-testnet.stellar.org"),
+};
+
+export function validateContractConfig(): void {
+  if (!CONTRACT_CONFIG.CONTRACT_ID) {
+    throw new Error(
+      "Missing contract configuration: NEXT_PUBLIC_CONTRACT_ID is not set. Add it to your .env.local (or CI environment) and restart the dev server."
+    );
+  }
+}
diff --git a/frontend/lib/contract/events.ts b/frontend/lib/contract/events.ts
new file mode 100644
index 00000000..899f30da
--- /dev/null
+++ b/frontend/lib/contract/events.ts
@@ -0,0 +1,175 @@
+import type { TimelineEvent } from "@/lib/types/tracking";
+import { normalizeTimelineEvent } from "@/lib/types/tracking";
+import { createContractClient } from "@/lib/stellar/contractClient";
+import { trackContractInteraction, trackError } from "@/lib/analytics";
+import { CONTRACT_CONFIG, validateContractConfig } from "./config";
+
+export type ProductEventsPage = {
+  events: TimelineEvent[];
+  total: number;
+  offset: number;
+  limit: number;
+  hasMore: boolean;
+};
+
+const DEFAULT_EVENTS_PAGE_SIZE = 20;
+const MAX_EVENTS_PAGE_SIZE = 50;
+
+const E2E_MOCKS_ENABLED = process.env.NEXT_PUBLIC_E2E_MOCKS === "true";
+
+function getE2EMockEvents(productId: string): TimelineEvent[] {
+  const nowSec = Math.floor(Date.now() / 1000);
+  return [
+    {
+      event_id: 3,
+      product_id: productId,
+      actor: "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF",
+      timestamp: nowSec - 3600,
+      event_type: "SHIP",
+      note: "Mock: Shipment dispatched",
+    },
+    {
+      event_id: 2,
+      product_id: productId,
+      actor: "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF",
+      timestamp: nowSec - 7200,
+      event_type: "PACKAGE",
+      note: "Mock: Packaged for shipping",
+    },
+    {
+      event_id: 1,
+      product_id: productId,
+      actor: "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF",
+      timestamp: nowSec - 10_800,
+      event_type: "HARVEST",
+      note: "Mock: Harvested at origin",
+    },
+  ];
+}
+
+export async function fetchProductEventsPage(
+  productId: string,
+  options?: {
+    offset?: number;
+    limit?: number;
+  }
+): Promise<ProductEventsPage> {
+  const startedAt = Date.now();
+  const offset = Math.max(0, options?.offset ?? 0);
+  const limit = Math.min(
+    MAX_EVENTS_PAGE_SIZE,
+    Math.max(1, options?.limit ?? DEFAULT_EVENTS_PAGE_SIZE)
+  );
+
+  try {
+    if (E2E_MOCKS_ENABLED) {
+      const all = getE2EMockEvents(productId);
+      const paged = all.slice(offset, offset + limit);
+      return {
+        events: paged,
+        total: all.length,
+        offset,
+        limit,
+        hasMore: offset + limit < all.length,
+      };
+    }
+
+    validateContractConfig();
+
+    const contractClient = createContractClient({
+      contractId: CONTRACT_CONFIG.CONTRACT_ID,
+      network: CONTRACT_CONFIG.NETWORK,
+      rpcUrl: CONTRACT_CONFIG.RPC_URL,
+    });
+
+    const eventIds = await contractClient.get_product_event_ids(productId);
+    const sortedIds = [...eventIds].sort((a, b) => b - a);
+    const pagedIds = sortedIds.slice(offset, offset + limit);
+
+    const events = await Promise.all(pagedIds.map((id) => contractClient.get_event(id)));
+    const validEvents = events
+      .filter((e): e is TimelineEvent => e !== null)
+      .map(normalizeTimelineEvent)
+      .sort((a, b) => b.timestamp - a.timestamp);
+
+    const page: ProductEventsPage = {
+      events: validEvents,
+      total: sortedIds.length,
+      offset,
+      limit,
+      hasMore: offset + limit < sortedIds.length,
+    };
+
+    trackContractInteraction({
+      method: "fetch_product_events_page",
+      durationMs: Date.now() - startedAt,
+      success: true,
+      context: {
+        productId,
+        offset,
+        limit,
+        resultCount: validEvents.length,
+        totalCount: sortedIds.length,
+      },
+    });
+
+    return page;
+  } catch (error) {
+    console.error("Failed to fetch paged product events:", error);
+    trackContractInteraction({
+      method: "fetch_product_events_page",
+      durationMs: Date.now() - startedAt,
+      success: false,
+      errorMessage: error instanceof Error ? error.message : String(error),
+      context: { productId, offset, limit },
+    });
+    trackError(error, { source: "fetchProductEventsPage", productId, offset, limit });
+    throw error;
+  }
+}
+
+export async function fetchProductEvents(
+  productId: string
+): Promise<TimelineEvent[]> {
+  const allEvents: TimelineEvent[] = [];
+  let offset = 0;
+  const limit = MAX_EVENTS_PAGE_SIZE;
+
+  while (true) {
+    const page = await fetchProductEventsPage(productId, { offset, limit });
+    allEvents.push(...page.events);
+    if (!page.hasMore) {
+      return allEvents.sort((a, b) => b.timestamp - a.timestamp);
+    }
+    offset += limit;
+  }
+}
+
+/**
+ * Formats a timestamp (Unix epoch in seconds) to a readable date string.
+ */
+export function formatEventTimestamp(timestamp: number): string {
+  const date = new Date(timestamp * 1000);
+  return new Intl.DateTimeFormat("en-US", {
+    year: "numeric",
+    month: "short",
+    day: "numeric",
+    hour: "2-digit",
+    minute: "2-digit",
+  }).format(date);
+}
+
+/**
+ * Gets the relative time string (e.g., "2 hours ago").
+ */
+export function getRelativeTime(timestamp: number): string {
+  const now = Math.floor(Date.now() / 1000);
+  const diff = now - timestamp;
+
+  if (diff < 60) return "just now";
+  if (diff < 3600) return `${Math.floor(diff / 60)} minutes ago`;
+  if (diff < 86400) return `${Math.floor(diff / 3600)} hours ago`;
+  if (diff < 604800) return `${Math.floor(diff / 86400)} days ago`;
+  
+  return formatEventTimestamp(timestamp);
+}
diff --git a/frontend/lib/contract/product.ts b/frontend/lib/contract/product.ts
new file mode 100644
index 00000000..69f023ae
--- /dev/null
+++ b/frontend/lib/contract/product.ts
@@ -0,0 +1,32 @@
+import { PRODUCT_REGISTRATION_DELAY_MS } from "@/lib/constants";
+
+export type ProductData = {
+    id: string;
+    name: string;
+    origin: string;
+    description?: string;
+    category: string;
+};
+
+export async function registerProductOnChain(
+    publicKey: string,
+    data: ProductData
+): Promise<string> {
+    // In a real Soroban contract interaction, we would use the Stellar SDK
+    // to invoke a contract method. For now, we'll implement the logic
+    // to build a transaction that could be used for this.
+
+    // This is a placeholder for actual Soroban contract invocation.
+    // In a real scenario, you'd use `new Contract(CONTRACT_CONFIG.CONTRACT_ID).call("register", ...)`
+
+    // Validate contract configuration
+    if (!publicKey || !data.id) {
+        throw new Error('Invalid contract parameters');
+    }
+
+    // Simulate a delay
+    await new Promise(resolve => setTimeout(resolve, PRODUCT_REGISTRATION_DELAY_MS));
+
+    // Return a mock transaction hash
+    return "t_" + Math.random().toString(36).substring(2, 15);
+}
diff --git a/frontend/lib/contract/products.ts b/frontend/lib/contract/products.ts
new file mode 100644
index 00000000..39f37ff9
--- /dev/null
+++ b/frontend/lib/contract/products.ts
@@ -0,0 +1,96 @@
+import type { Product } from "@/lib/types/product";
+import { CONTRACT_CONFIG } from "./config";
+import { trackContractInteraction } from "@/lib/analytics";
+
+/**
+ * Fetches products by owner address.
+ *
+ * The on-chain contract does not currently expose a "list products by owner"
+ * query, so this function returns mock data when a contract ID is not
+ * configured (development) and an empty array otherwise.
+ * Replace the body with a real indexer / contract call once one is available.
+ *
+ * @param owner - The owner's public key/address
+ * @returns Array of products owned by the given address
+ */
+export async function getProductsByOwner(owner: string): Promise<Product[]> {
+  const startedAt = Date.now();
+
+  const useMockData = process.env.NEXT_PUBLIC_USE_MOCK_DATA === "true";
+
+  // When no contract is configured, return mock data only when explicitly enabled.
+  if (!CONTRACT_CONFIG.CONTRACT_ID) {
+    if (useMockData) {
+      return getMockProducts(owner);
+    }
+    return [];
+  }
+
+  // Placeholder: until the contract/indexer exposes a "list by owner" method,
+  // return an empty array and track the call for observability.
+  trackContractInteraction({
+    method: "get_products_by_owner",
+    durationMs: Date.now() - startedAt,
+    success: true,
+    context: { owner, resultCount: 0, stub: true },
+  });
+
+  return [];
+}
+
+/** Mock products used during local development when no contract is configured. */
+function getMockProducts(owner: string): Product[] {
+  const now = Date.now();
+  const dayMs = 24 * 60 * 60 * 1000;
+  
+  return [
+    {
+      id: "PROD-001",
+      name: "Organic Coffee Beans",
+      description: "Premium organic coffee beans from Colombia",
+      origin: { location: "Colombia, South America" },
+      owner,
+      created_at: Math.floor((now - 30 * dayMs) / 1000),
+      active: true,
+      category: "Beverages",
+      tags: ["organic", "fair-trade"],
+      eventCount: 5,
+    },
+    {
+      id: "PROD-002",
+      name: "Fresh Avocados",
+      description: "Hass avocados from Mexico",
+      origin: { location: "Michoacán, Mexico" },
+      owner,
+      created_at: Math.floor((now - 15 * dayMs) / 1000),
+      active: true,
+      category: "Produce",
+      tags: ["organic", "fresh"],
+      eventCount: 3,
+    },
+    {
+      id: "PROD-003",
+      name: "Organic Cotton T-Shirt",
+      description: "100% organic cotton t-shirt",
+      origin: { location: "India" },
+      owner,
+      created_at: Math.floor((now - 7 * dayMs) / 1000),
+      active: true,
+      category: "Apparel",
+      tags: ["organic", "sustainable"],
+      eventCount: 8,
+    },
+    {
+      id: "PROD-004",
+      name: "Honey",
+      description: "Raw wildflower honey",
+      origin: { location: "Vermont, USA" },
+      owner,
+      created_at: Math.floor((now - 45 * dayMs) / 1000),
+      active: false,
+      category: "Food",
+      tags: ["raw", "local"],
+      eventCount: 12,
+    },
+  ];
+}
diff --git a/frontend/lib/errors.ts b/frontend/lib/errors.ts
new file mode 100644
index 00000000..6d8393ee
--- /dev/null
+++ b/frontend/lib/errors.ts
@@ -0,0 +1,266 @@
+export type ErrorCategory =
+  | "network"
+  | "contract"
+  | "wallet"
+  | "validation"
+  | "authentication"
+  | "business_logic"
+  | "system"
+  | "user"
+  | "unknown";
+
+export type ClassifiedError = {
+  category: ErrorCategory;
+  title: string;
+  message: string;
+  recoverySteps: string[];
+  retryable: boolean;
+  original: unknown;
+};
+
+const NETWORK_PATTERNS = [
+  "network",
+  "fetch",
+  "timeout",
+  "timed out",
+  "econnrefused",
+  "econnreset",
+  "enotfound",
+  "dns",
+  "offline",
+  "internet",
+  "connection",
+  "503",
+  "502",
+  "504",
+  "429",
+  "rate limit",
+] as const;
+
+const WALLET_PATTERNS = [
+  "wallet",
+  "freighter",
+  "sign",
+  "rejected",
+  "denied",
+  "cancelled",
+  "canceled",
+  "user declined",
+  "not installed",
+  "unlocked",
+  "popup",
+  "account",
+  "WalletError",
+] as const;
+
+const CONTRACT_PATTERNS = [
+  "contract",
+  "soroban",
+  "invoke",
+  "simulation",
+  "wasm",
+  "host function",
+  "insufficient balance",
+  "tx_failed",
+  "op_",
+  "transaction failed",
+] as const;
+
+const VALIDATION_PATTERNS = [
+  "invalid",
+  "required",
+  "must be",
+  "cannot be",
+  "too long",
+  "too short",
+  "format",
+  "expected",
+  "missing",
+  "empty",
+] as const;
+
+const AUTHENTICATION_PATTERNS = [
+  "unauthorized",
+  "forbidden",
+  "login",
+  "authentication",
+  "session",
+  "permission",
+  "credentials",
+  "401",
+  "403",
+] as const;
+
+const BUSINESS_LOGIC_PATTERNS = [
+  "workflow",
+  "conflict",
+  "already exists",
+  "not allowed",
+  "business rule",
+  "constraint",
+] as const;
+
+const SYSTEM_PATTERNS = [
+  "system",
+  "browser",
+  "performance",
+  "resource",
+  "memory",
+  "out of memory",
+  "compatibility",
+  "internal server error",
+  "500",
+] as const;
+
+function extractMessage(error: unknown): string {
+  if (error instanceof Error) return error.message;
+  if (typeof error === "string") return error;
+  return "An unexpected error occurred.";
+}
+
+function extractName(error: unknown): string {
+  if (error instanceof Error) return error.name;
+  return "";
+}
+
+function matchesAny(text: string, patterns: readonly string[]): boolean {
+  const lower = text.toLowerCase();
+  return patterns.some((p) => lower.includes(p));
+}
+
+function classifyCategory(error: unknown): ErrorCategory {
+  const message = extractMessage(error);
+  const name = extractName(error);
+  const combined = `${name} ${message}`;
+
+  if (name === "WalletError" || matchesAny(combined, WALLET_PATTERNS)) {
+    return "wallet";
+  }
+  if (matchesAny(combined, CONTRACT_PATTERNS)) {
+    return "contract";
+  }
+  if (matchesAny(combined, NETWORK_PATTERNS)) {
+    return "network";
+  }
+  if (matchesAny(combined, VALIDATION_PATTERNS)) {
+    return "validation";
+  }
+  if (matchesAny(combined, AUTHENTICATION_PATTERNS)) {
+    return "authentication";
+  }
+  if (matchesAny(combined, BUSINESS_LOGIC_PATTERNS)) {
+    return "business_logic";
+  }
+  if (matchesAny(combined, SYSTEM_PATTERNS)) {
+    return "system";
+  }
+
+  return "unknown";
+}
+
+const CATEGORY_META: Record<
+  ErrorCategory,
+  { title: string; defaultMessage: string; recoverySteps: string[]; retryable: boolean }
+> = {
+  network: {
+    title: "Network Error",
+    defaultMessage: "Unable to reach the server. Please check your internet connection.",
+    recoverySteps: [
+      "Check your internet connection.",
+      "Try again in a few moments.",
+      "If the problem persists, the server may be temporarily unavailable.",
+    ],
+    retryable: true,
+  },
+  contract: {
+    title: "Contract Error",
+    defaultMessage: "The smart contract operation could not be completed.",
+    recoverySteps: [
+      "Verify you have sufficient funds for this transaction.",
+      "Check that the contract parameters are correct.",
+      "Try the operation again.",
+    ],
+    retryable: true,
+  },
+  wallet: {
+    title: "Wallet Error",
+    defaultMessage: "There was a problem with your wallet.",
+    recoverySteps: [
+      "Make sure Freighter is installed and unlocked.",
+      "Check that your browser did not block the wallet popup.",
+      "Reconnect your wallet and try again.",
+    ],
+    retryable: true,
+  },
+  validation: {
+    title: "Validation Error",
+    defaultMessage: "Please check your input and try again.",
+    recoverySteps: [
+      "Review the form fields for errors.",
+      "Ensure all required fields are filled in.",
+    ],
+    retryable: false,
+  },
+  authentication: {
+    title: "Authentication Error",
+    defaultMessage: "There was a problem with your session or permissions.",
+    recoverySteps: [
+      "Please log in again.",
+      "Ensure you have the correct permissions for this action.",
+    ],
+    retryable: false,
+  },
+  business_logic: {
+    title: "Operation Failed",
+    defaultMessage: "The requested operation cannot be completed due to a business rule conflict.",
+    recoverySteps: [
+      "Review the action you are trying to perform.",
+      "Ensure the data you are submitting does not conflict with existing records.",
+    ],
+    retryable: false,
+  },
+  system: {
+    title: "System Error",
+    defaultMessage: "A system or platform error occurred.",
+    recoverySteps: [
+      "Refresh the page and try again.",
+      "Check if your browser is up to date.",
+      "Contact support if the issue persists.",
+    ],
+    retryable: true,
+  },
+  user: {
+    title: "Action Required",
+    defaultMessage: "Please complete the required action to proceed.",
+    recoverySteps: [],
+    retryable: false,
+  },
+  unknown: {
+    title: "Something Went Wrong",
+    defaultMessage: "An unexpected error occurred. Please try again.",
+    recoverySteps: [
+      "Refresh the page and try again.",
+      "If the problem persists, contact support.",
+    ],
+    retryable: true,
+  },
+};
+
+export function classifyError(error: unknown): ClassifiedError {
+  const category = classifyCategory(error);
+  const meta = CATEGORY_META[category];
+  const message = extractMessage(error);
+
+  return {
+    category,
+    title: meta.title,
+    message: message || meta.defaultMessage,
+    recoverySteps: meta.recoverySteps,
+    retryable: meta.retryable,
+    original: error,
+  };
+}
+
+export function isRetryableError(error: unknown): boolean {
+  return classifyError(error).retryable;
+}
diff --git a/frontend/lib/feedback.ts b/frontend/lib/feedback.ts
new file mode 100644
index 00000000..29f044e3
--- /dev/null
+++ b/frontend/lib/feedback.ts
@@ -0,0 +1,73 @@
+import { toast } from "@/lib/toast/store";
+import { classifyError, type ClassifiedError } from "@/lib/errors";
+
+export type SuccessAction = {
+  label: string;
+  onClick: () => void;
+};
+
+export function showSuccess(message: string, action?: SuccessAction): string {
+  return toast.success(message, {
+    duration: 6000,
+    action: action ? { label: action.label, onClick: action.onClick } : undefined,
+  });
+}
+
+export function showErrorFeedback(error: unknown): ClassifiedError {
+  const classified = classifyError(error);
+
+  const recoveryText =
+    classified.recoverySteps.length > 0
+      ? `\n${classified.recoverySteps[0]}`
+      : "";
+
+  toast.error(`${classified.message}${recoveryText}`, {
+    title: classified.title,
+    duration: classified.retryable ? 8000 : 10000,
+  });
+
+  return classified;
+}
+
+export function showWarning(message: string): string {
+  return toast.warning(message, { duration: 5000 });
+}
+
+export function showInfo(message: string): string {
+  return toast.info(message, { duration: 4000 });
+}
+
+export type RetryOptions = {
+  maxAttempts?: number;
+  baseDelayMs?: number;
+  maxDelayMs?: number;
+  onAttempt?: (attempt: number, maxAttempts: number) => void;
+};
+
+export async function withRetry<T>(
+  fn: () => Promise<T>,
+  options?: RetryOptions
+): Promise<T> {
+  const maxAttempts = options?.maxAttempts ?? 3;
+  const baseDelayMs = options?.baseDelayMs ?? 1000;
+  const maxDelayMs = options?.maxDelayMs ?? 10000;
+
+  let lastError: unknown;
+
+  for (let attempt = 1; attempt <= maxAttempts; attempt++) {
+    try {
+      options?.onAttempt?.(attempt, maxAttempts);
+      return await fn();
+    } catch (error) {
+      lastError = error;
+
+      if (attempt === maxAttempts) break;
+
+      const delay = Math.min(baseDelayMs * Math.pow(2, attempt - 1), maxDelayMs);
+      const jitter = delay * 0.1 * Math.random();
+      await new Promise((resolve) => setTimeout(resolve, delay + jitter));
+    }
+  }
+
+  throw lastError;
+}
diff --git a/frontend/lib/hooks/useLoadingState.ts b/frontend/lib/hooks/useLoadingState.ts
new file mode 100644
index 00000000..353aed0f
--- /dev/null
+++ b/frontend/lib/hooks/useLoadingState.ts
@@ -0,0 +1,185 @@
+"use client";
+
+import { useState, useCallback } from "react";
+
+/**
+ * Loading state manager
+ */
+export interface LoadingState {
+  isLoading: boolean;
+  error: Error | null;
+  progress: number;
+  estimatedTime: number | null;
+}
+
+/**
+ * Hook for managing async operation loading states
+ */
+export function useLoadingState(
+  initialState: Partial<LoadingState> = {}
+) {
+  const [state, setState] = useState<LoadingState>({
+    isLoading: false,
+    error: null,
+    progress: 0,
+    estimatedTime: null,
+    ...initialState,
+  });
+
+  const setLoading = useCallback((isLoading: boolean) => {
+    setState((prev) => ({
+      ...prev,
+      isLoading,
+      error: isLoading ? null : prev.error,
+      progress: isLoading ? 0 : prev.progress,
+    }));
+  }, []);
+
+  const setError = useCallback((error: Error | null) => {
+    setState((prev) => ({
+      ...prev,
+      error,
+      isLoading: false,
+    }));
+  }, []);
+
+  const setProgress = useCallback((progress: number) => {
+    setState((prev) => ({
+      ...prev,
+      progress: Math.min(Math.max(progress, 0), 100),
+    }));
+  }, []);
+
+  const setEstimatedTime = useCallback((time: number | null) => {
+    setState((prev) => ({
+      ...prev,
+      estimatedTime: time,
+    }));
+  }, []);
+
+  const reset = useCallback(() => {
+    setState({
+      isLoading: false,
+      error: null,
+      progress: 0,
+      estimatedTime: null,
+    });
+  }, []);
+
+  return {
+    ...state,
+    setLoading,
+    setError,
+    setProgress,
+    setEstimatedTime,
+    reset,
+  };
+}
+
+/**
+ * Hook for async operations with automatic loading state management
+ */
+export function useAsync<T>(
+  asyncFunction: () => Promise<T>,
+  immediate = true
+) {
+  const loading = useLoadingState();
+  const [data, setData] = useState<T | null>(null);
+
+  const execute = useCallback(async () => {
+    loading.setLoading(true);
+    loading.setError(null);
+    try {
+      const response = await asyncFunction();
+      setData(response);
+      loading.setLoading(false);
+      return response;
+    } catch (error) {
+      const err = error instanceof Error ? error : new Error(String(error));
+      loading.setError(err);
+      loading.setLoading(false);
+      throw err;
+    }
+  }, [asyncFunction, loading]);
+
+  // Execute on mount if immediate is true
+  if (immediate) {
+    execute();
+  }
+
+  return { ...loading, data, execute };
+}
+
+/**
+ * Hook for managing multi-step operations
+ */
+export interface Step {
+  id: string;
+  label: string;
+  description?: string;
+  duration?: number; // estimated duration in milliseconds
+}
+
+export interface MultiStepState {
+  steps: Step[];
+  currentStep: number;
+  completedSteps: number[];
+  isLoading: boolean;
+  error: Error | null;
+  progress: number;
+}
+
+export function useMultiStepOperation(steps: Step[]) {
+  const [state, setState] = useState<MultiStepState>({
+    steps,
+    currentStep: 0,
+    completedSteps: [],
+    isLoading: false,
+    error: null,
+    progress: 0,
+  });
+
+  const goToNextStep = useCallback(() => {
+    setState((prev) => ({
+      ...prev,
+      currentStep: Math.min(prev.currentStep + 1, prev.steps.length - 1),
+    }));
+  }, []);
+
+  const markStepComplete = useCallback(() => {
+    setState((prev) => ({
+      ...prev,
+      completedSteps: [...new Set([...prev.completedSteps, prev.currentStep])],
+      progress: Math.round(
+        ((prev.completedSteps.length + 1) / prev.steps.length) * 100
+      ),
+    }));
+    goToNextStep();
+  }, [goToNextStep]);
+
+  const setStepError = useCallback((error: Error) => {
+    setState((prev) => ({
+      ...prev,
+      error,
+    }));
+  }, []);
+
+  const reset = useCallback(() => {
+    setState({
+      steps,
+      currentStep: 0,
+      completedSteps: [],
+      isLoading: false,
+      error: null,
+      progress: 0,
+    });
+  }, [steps]);
+
+  return {
+    ...state,
+    goToNextStep,
+    markStepComplete,
+    setStepError,
+    reset,
+  };
+}
diff --git a/frontend/lib/hooks/useStellar.ts b/frontend/lib/hooks/useStellar.ts
new file mode 100644
index 00000000..11d423da
--- /dev/null
+++ b/frontend/lib/hooks/useStellar.ts
@@ -0,0 +1,10 @@
+import { useAppStore } from "@/lib/state/app.store";
+import { HORIZON_URL_BY_NETWORK } from "@/lib/stellar";
+
+export function useStellar() {
+  const network = useAppStore((s) => s.network);
+  return {
+    network,
+    horizonUrl: HORIZON_URL_BY_NETWORK[network],
+  };
+}
diff --git a/frontend/lib/hooks/useWallet.ts b/frontend/lib/hooks/useWallet.ts
new file mode 100644
index 00000000..0ede67ab
--- /dev/null
+++ b/frontend/lib/hooks/useWallet.ts
@@ -0,0 +1,5 @@
+import { useWalletStore } from "@/lib/state/wallet.store";
+
+export function useWallet() {
+  return useWalletStore();
+}
diff --git a/frontend/lib/i18n/format.ts b/frontend/lib/i18n/format.ts
new file mode 100644
index 00000000..5a3331c0
--- /dev/null
+++ b/frontend/lib/i18n/format.ts
@@ -0,0 +1,27 @@
+import { i18n } from "@/lib/i18n";
+
+type DateInput = Date | number;
+
+function getLocale(): string {
+  return i18n.resolvedLanguage || i18n.language || "en";
+}
+
+function toDate(input: DateInput): Date {
+  return input instanceof Date ? input : new Date(input);
+}
+
+export function formatNumber(value: number, options?: Intl.NumberFormatOptions): string {
+  return new Intl.NumberFormat(getLocale(), options).format(value);
+}
+
+export function formatDate(value: DateInput, options?: Intl.DateTimeFormatOptions): string {
+  return new Intl.DateTimeFormat(getLocale(), options).format(toDate(value));
+}
+
+export function formatTime(value: DateInput, options?: Intl.DateTimeFormatOptions): string {
+  return new Intl.DateTimeFormat(getLocale(), {
+    hour: "2-digit",
+    minute: "2-digit",
+    ...options,
+  }).format(toDate(value));
+}
diff --git a/frontend/lib/i18n/index.ts b/frontend/lib/i18n/index.ts
new file mode 100644
index 00000000..ae85446d
--- /dev/null
+++ b/frontend/lib/i18n/index.ts
@@ -0,0 +1,65 @@
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
+import en from '../../locales/en.json';
+
+const loadLocale = async (lng: string) => {
+  switch (lng) {
+    case 'es':
+      return (await import('../../locales/es.json')).default;
+    default:
+      return en;
+  }
+};
+
+const getInitialLanguage = (): string => {
+  if (typeof window !== 'undefined') {
+    return localStorage.getItem('i18nextLng') || 'en';
+  }
+  return 'en';
+};
+
+// Initialize i18next
+i18n
+  .use(initReactI18next)
+  .init({
+    resources: {
+      en: { translation: en },
+    },
+    lng: getInitialLanguage(), // default language
+    fallbackLng: 'en',
+    supportedLngs: ['en', 'es', 'fr', 'ar'],
+    interpolation: {
+      escapeValue: false, // React already does escaping
+    },
+    react: {
+      useSuspense: false,
+    },
+  });
+
+// Setup RTL logic when language changes
+if (typeof window !== 'undefined') {
+  void (async () => {
+    const lng = getInitialLanguage();
+    if (lng !== 'en' && !i18n.hasResourceBundle(lng, 'translation')) {
+      const locale = await loadLocale(lng);
+      i18n.addResourceBundle(lng, 'translation', locale, true, true);
+    }
+  })();
+
+  i18n.on('languageChanged', (lng: string) => {
+    localStorage.setItem('i18nextLng', lng);
+    document.documentElement.dir = i18n.dir(lng);
+
+    if (!i18n.hasResourceBundle(lng, 'translation')) {
+      void loadLocale(lng).then((locale) => {
+        i18n.addResourceBundle(lng, 'translation', locale, true, true);
+      });
+    }
+  });
+  
+  // Set initial direction
+  document.documentElement.dir = i18n.dir(getInitialLanguage());
+  document.documentElement.lang = getInitialLanguage();
+}
+
+export { i18n };
diff --git a/frontend/lib/qr.test.ts b/frontend/lib/qr.test.ts
new file mode 100644
index 00000000..c46b84ec
--- /dev/null
+++ b/frontend/lib/qr.test.ts
@@ -0,0 +1,117 @@
+import { describe, it, expect, vi, beforeEach } from "vitest";
+import { generateProductQR, generateProductQRSVG, getVerificationUrl } from "./qr";
+
+const { toDataURLMock, toStringMock } = vi.hoisted(() => ({
+  toDataURLMock: vi.fn(),
+  toStringMock: vi.fn(),
+}));
+
+// Mock QRCode library
+vi.mock('qrcode', () => ({
+  default: {
+    toDataURL: toDataURLMock,
+    toString: toStringMock,
+  },
+}));
+
+describe("QR Code Utilities", () => {
+  beforeEach(() => {
+    vi.clearAllMocks();
+    // Reset environment
+    delete process.env.NEXT_PUBLIC_APP_URL;
+    // Mock window.location for SSR tests
+    Object.defineProperty(window, 'location', {
+      value: { origin: 'http://localhost:3000' },
+      writable: true,
+    });
+  });
+
+  describe("getVerificationUrl", () => {
+    it("should generate verification URL with default localhost", () => {
+      const productId = "prod-123";
+      const result = getVerificationUrl(productId);
+      expect(result).toBe("http://localhost:3000/verify/prod-123");
+    });
+
+    it("should use NEXT_PUBLIC_APP_URL when available", () => {
+      process.env.NEXT_PUBLIC_APP_URL = "https://chainlogistics.app";
+      const productId = "prod-456";
+      const result = getVerificationUrl(productId);
+      expect(result).toBe("https://chainlogistics.app/verify/prod-456");
+    });
+
+    it("should handle window.location.origin in browser environment", () => {
+      delete process.env.NEXT_PUBLIC_APP_URL;
+      Object.defineProperty(window, 'location', {
+        value: { origin: 'https://staging.chainlogistics.app' },
+        writable: true,
+      });
+      const productId = "prod-789";
+      const result = getVerificationUrl(productId);
+      expect(result).toBe("https://staging.chainlogistics.app/verify/prod-789");
+    });
+  });
+
+  describe("generateProductQR", () => {
+    it("should generate QR code data URL", async () => {
+      const mockDataURL = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAA";
+      toDataURLMock.mockResolvedValue(mockDataURL);
+
+      const productId = "prod-123";
+      const result = await generateProductQR(productId);
+
+      expect(toDataURLMock).toHaveBeenCalledWith(
+        "http://localhost:3000/verify/prod-123",
+        {
+          width: 300,
+          margin: 2,
+          color: {
+            dark: '#000000',
+            light: '#FFFFFF'
+          }
+        }
+      );
+      expect(result).toBe(mockDataURL);
+    });
+
+    it("should handle QRCode generation errors", async () => {
+      const error = new Error("QR generation failed");
+      toDataURLMock.mockRejectedValue(error);
+
+      const productId = "prod-123";
+      await expect(generateProductQR(productId)).rejects.toThrow("QR generation failed");
+    });
+  });
+
+  describe("generateProductQRSVG", () => {
+    it("should generate QR code SVG string", async () => {
+      const mockSVG = '<svg xmlns="http://www.w3.org/2000/svg"><!-- QR Code --></svg>';
+      toStringMock.mockResolvedValue(mockSVG);
+
+      const productId = "prod-456";
+      const result = await generateProductQRSVG(productId);
+
+      expect(toStringMock).toHaveBeenCalledWith(
+        "http://localhost:3000/verify/prod-456",
+        {
+          type: 'svg',
+          width: 300,
+          margin: 2,
+          color: {
+            dark: '#000000',
+            light: '#FFFFFF'
+          }
+        }
+      );
+      expect(result).toBe(mockSVG);
+    });
+
+    it("should handle SVG generation errors", async () => {
+      const error = new Error("SVG generation failed");
+      toStringMock.mockRejectedValue(error);
+
+      const productId = "prod-456";
+      await expect(generateProductQRSVG(productId)).rejects.toThrow("SVG generation failed");
+    });
+  });
+});
diff --git a/frontend/lib/qr.ts b/frontend/lib/qr.ts
new file mode 100644
index 00000000..922e49f4
--- /dev/null
+++ b/frontend/lib/qr.ts
@@ -0,0 +1,31 @@
+import QRCode from 'qrcode';
+
+export async function generateProductQR(productId: string): Promise<string> {
+    const url = getVerificationUrl(productId);
+    return QRCode.toDataURL(url, {
+        width: 300,
+        margin: 2,
+        color: {
+            dark: '#000000',
+            light: '#FFFFFF'
+        }
+    });
+}
+
+export async function generateProductQRSVG(productId: string): Promise<string> {
+    const url = getVerificationUrl(productId);
+    return QRCode.toString(url, {
+        type: 'svg',
+        width: 300,
+        margin: 2,
+        color: {
+            dark: '#000000',
+            light: '#FFFFFF'
+        }
+    });
+}
+
+export function getVerificationUrl(productId: string): string {
+    const baseUrl = process.env.NEXT_PUBLIC_APP_URL || (typeof window !== 'undefined' ? window.location.origin : 'http://localhost:3000');
+    return `${baseUrl}/verify/${productId}`;
+}
diff --git a/frontend/lib/search/fuzzy.test.ts b/frontend/lib/search/fuzzy.test.ts
new file mode 100644
index 00000000..1af9827f
--- /dev/null
+++ b/frontend/lib/search/fuzzy.test.ts
@@ -0,0 +1,28 @@
+import { describe, expect, it } from "vitest";
+
+import { fuzzyScore } from "./fuzzy";
+
+describe("fuzzyScore", () => {
+  it("matches exact substring", () => {
+    const res = fuzzyScore("app", "apple");
+    expect(res.matched).toBe(true);
+    expect(res.score).toBeGreaterThan(0);
+  });
+
+  it("matches non-contiguous characters", () => {
+    const res = fuzzyScore("apl", "apple");
+    expect(res.matched).toBe(true);
+  });
+
+  it("does not match if characters are missing", () => {
+    const res = fuzzyScore("zzz", "apple");
+    expect(res.matched).toBe(false);
+    expect(res.score).toBe(0);
+  });
+
+  it("prefers word-start matches", () => {
+    const start = fuzzyScore("app", "apple").score;
+    const mid = fuzzyScore("app", "snapple").score;
+    expect(start).toBeGreaterThan(mid);
+  });
+});
diff --git a/frontend/lib/search/fuzzy.ts b/frontend/lib/search/fuzzy.ts
new file mode 100644
index 00000000..9705f8cc
--- /dev/null
+++ b/frontend/lib/search/fuzzy.ts
@@ -0,0 +1,47 @@
+export type FuzzyMatch = {
+  score: number
+  matched: boolean
+}
+
+export function fuzzyScore(query: string, text: string): FuzzyMatch {
+  const q = query.trim().toLowerCase()
+  const t = text.trim().toLowerCase()
+
+  if (!q) return { score: 0, matched: true }
+  if (!t) return { score: 0, matched: false }
+
+  let qi = 0
+  let score = 0
+  let consecutive = 0
+
+  for (let ti = 0; ti < t.length && qi < q.length; ti += 1) {
+    const tc = t[ti]!
+    const qc = q[qi]!
+
+    if (tc === qc) {
+      const isWordStart = ti === 0 || /[^a-z0-9]/.test(t[ti - 1]!)
+      score += 5
+      if (isWordStart) score += 6
+
+      consecutive += 1
+      score += Math.min(10, consecutive * 2)
+
+      qi += 1
+      continue
+    }
+
+    consecutive = 0
+  }
+
+  const matched = qi === q.length
+  if (!matched) return { score: 0, matched: false }
+
+  const lengthPenalty = Math.max(0, t.length - q.length)
+  score -= Math.min(15, Math.floor(lengthPenalty / 8))
+
+  return { score: Math.max(1, score), matched: true }
+}
+
+export function fuzzyIncludes(query: string, text: string) {
+  return fuzzyScore(query, text).matched
+}
diff --git a/frontend/lib/search/savedSearches.test.ts b/frontend/lib/search/savedSearches.test.ts
new file mode 100644
index 00000000..14b9e248
--- /dev/null
+++ b/frontend/lib/search/savedSearches.test.ts
@@ -0,0 +1,34 @@
+import { describe, expect, it, beforeEach } from "vitest";
+
+import { loadSavedSearches, persistSavedSearches } from "./savedSearches";
+
+describe("savedSearches", () => {
+  const storageKey = "test.savedSearches";
+
+  beforeEach(() => {
+    localStorage.clear();
+  });
+
+  it("returns empty array when nothing stored", () => {
+    expect(loadSavedSearches(storageKey)).toEqual([]);
+  });
+
+  it("persists and loads searches", () => {
+    const items = [
+      {
+        id: "1",
+        name: "My search",
+        createdAt: 1,
+        filters: { q: "abc", category: "food" },
+      },
+    ];
+
+    persistSavedSearches(storageKey, items);
+    expect(loadSavedSearches(storageKey)).toEqual(items);
+  });
+
+  it("handles invalid JSON gracefully", () => {
+    localStorage.setItem(storageKey, "not-json");
+    expect(loadSavedSearches(storageKey)).toEqual([]);
+  });
+});
diff --git a/frontend/lib/search/savedSearches.ts b/frontend/lib/search/savedSearches.ts
new file mode 100644
index 00000000..c4e80fbc
--- /dev/null
+++ b/frontend/lib/search/savedSearches.ts
@@ -0,0 +1,31 @@
+export type SavedSearch<TFilters extends Record<string, unknown>> = {
+  id: string
+  name: string
+  filters: TFilters
+  createdAt: number
+}
+
+export function loadSavedSearches<TFilters extends Record<string, unknown>>(
+  storageKey: string
+): SavedSearch<TFilters>[] {
+  if (typeof window === "undefined") return []
+
+  const raw = localStorage.getItem(storageKey)
+  if (!raw) return []
+
+  try {
+    const parsed = JSON.parse(raw) as unknown
+    if (!Array.isArray(parsed)) return []
+    return parsed as SavedSearch<TFilters>[]
+  } catch {
+    return []
+  }
+}
+
+export function persistSavedSearches<TFilters extends Record<string, unknown>>(
+  storageKey: string,
+  items: SavedSearch<TFilters>[]
+) {
+  if (typeof window === "undefined") return
+  localStorage.setItem(storageKey, JSON.stringify(items))
+}
diff --git a/frontend/lib/secure-storage.ts b/frontend/lib/secure-storage.ts
new file mode 100644
index 00000000..26d46b43
--- /dev/null
+++ b/frontend/lib/secure-storage.ts
@@ -0,0 +1,62 @@
+const SECURE_SESSION_PREFIX = "secure:";
+
+export const secureSession = {
+  setItem(key: string, value: string): void {
+    try {
+      sessionStorage.setItem(SECURE_SESSION_PREFIX + key, value);
+    } catch (e) {
+      console.error("[secure-session] failed to set item:", e);
+    }
+  },
+
+  getItem(key: string): string | null {
+    try {
+      return sessionStorage.getItem(SECURE_SESSION_PREFIX + key);
+    } catch {
+      return null;
+    }
+  },
+
+  removeItem(key: string): void {
+    try {
+      sessionStorage.removeItem(SECURE_SESSION_PREFIX + key);
+    } catch (e) {
+      console.error("[secure-session] failed to remove item:", e);
+    }
+  },
+
+  clear(): void {
+    try {
+      const keys = Object.keys(sessionStorage).filter(k => k.startsWith(SECURE_SESSION_PREFIX));
+      keys.forEach(k => sessionStorage.removeItem(k));
+    } catch (e) {
+      console.error("[secure-session] failed to clear:", e);
+    }
+  },
+};
+
+export const secureLocal = {
+  setItem(key: string, value: string): void {
+    try {
+      localStorage.setItem(key, value);
+    } catch (e) {
+      console.error("[secure-local] failed to set item:", e);
+    }
+  },
+
+  getItem(key: string): string | null {
+    try {
+      return localStorage.getItem(key);
+    } catch {
+      return null;
+    }
+  },
+
+  removeItem(key: string): void {
+    try {
+      localStorage.removeItem(key);
+    } catch (e) {
+      console.error("[secure-local] failed to remove item:", e);
+    }
+  },
+};
\ No newline at end of file
diff --git a/frontend/lib/state/app.store.ts b/frontend/lib/state/app.store.ts
new file mode 100644
index 00000000..5ab54c22
--- /dev/null
+++ b/frontend/lib/state/app.store.ts
@@ -0,0 +1,11 @@
+import { create } from "zustand";
+
+export type AppState = {
+  network: "testnet" | "mainnet" | "futurenet";
+  setNetwork: (network: AppState["network"]) => void;
+};
+
+export const useAppStore = create<AppState>((set) => ({
+  network: "testnet",
+  setNetwork: (network) => set({ network }),
+}));
diff --git a/frontend/lib/state/providers.tsx b/frontend/lib/state/providers.tsx
new file mode 100644
index 00000000..b203a41d
--- /dev/null
+++ b/frontend/lib/state/providers.tsx
@@ -0,0 +1,70 @@
+"use client";
+
+import { useEffect, useState, type ReactNode } from "react";
+import { useWalletStore, type WalletState } from "@/lib/state/wallet.store";
+import { useAppStore, type AppState } from "@/lib/state/app.store";
+import { CONTRACT_CONFIG, validateContractConfig } from "@/lib/contract/config";
+import { ErrorBoundary } from "@/components/ErrorBoundary";
+import { i18n } from "@/lib/i18n";
+
+function ContractConfigGuard() {
+  const [error, setError] = useState<Error | null>(null);
+
+  useEffect(() => {
+    try {
+      validateContractConfig();
+    } catch (err) {
+      const nextError = err instanceof Error ? err : new Error(String(err));
+      Promise.resolve().then(() => setError(nextError));
+    }
+  }, []);
+
+  if (error) throw error;
+  return null;
+}
+
+function WalletInitializer() {
+  const initialize = useWalletStore((state: WalletState) => state.initialize);
+  useEffect(() => {
+    initialize();
+  }, [initialize]);
+  return null;
+}
+
+function NetworkInitializer() {
+  const setNetwork = useAppStore((s: AppState) => s.setNetwork);
+  useEffect(() => {
+    setNetwork(CONTRACT_CONFIG.NETWORK);
+  }, [setNetwork]);
+  return null;
+}
+
+function I18nInitializer() {
+  useEffect(() => {
+    const apply = (lng: string) => {
+      document.documentElement.dir = i18n.dir(lng);
+      document.documentElement.lang = lng;
+    };
+
+    apply(i18n.resolvedLanguage || i18n.language || "en");
+    i18n.on("languageChanged", apply);
+
+    return () => {
+      i18n.off("languageChanged", apply);
+    };
+  }, []);
+
+  return null;
+}
+
+export function AppProviders({ children }: { children: ReactNode }) {
+  return (
+    <ErrorBoundary onReset={() => window.location.reload()}>
+      <ContractConfigGuard />
+      <NetworkInitializer />
+      <WalletInitializer />
+      <I18nInitializer />
+      {children}
+    </ErrorBoundary>
+  );
+}
diff --git a/frontend/lib/state/wallet.store.ts b/frontend/lib/state/wallet.store.ts
new file mode 100644
index 00000000..94eee2bf
--- /dev/null
+++ b/frontend/lib/state/wallet.store.ts
@@ -0,0 +1,149 @@
+ 
+import { create } from "zustand";
+import { connectWallet, disconnectWallet, getCurrentAddress, getFreighterNetwork } from "../stellar/wallet";
+
+const E2E_MOCKS_ENABLED = process.env.NEXT_PUBLIC_E2E_MOCKS === "true";
+
+export type WalletState = {
+  status: "disconnected" | "connecting" | "connected" | "error";
+  publicKey: string | null;
+  network: "testnet" | "mainnet" | "futurenet" | null;
+  error: string | null;
+  setStatus: (status: WalletState["status"]) => void;
+  setPublicKey: (publicKey: string | null) => void;
+  setNetwork: (network: WalletState["network"]) => void;
+  setError: (error: string | null) => void;
+  connect: () => Promise<void>;
+  disconnect: () => Promise<void>;
+  /**
+   * Call once on app mount. Verifies persisted connection is still valid
+   * and starts polling to detect account switches in Freighter.
+   */
+  initialize: () => Promise<void>;
+};
+
+// Module-level watcher — one interval per app session.
+let _accountWatcher: ReturnType<typeof setInterval> | null = null;
+
+type SetSlice = (partial: Partial<Pick<WalletState, "status" | "publicKey" | "error">>) => void;
+
+function startAccountWatcher(getState: () => WalletState, setState: SetSlice) {
+  if (_accountWatcher !== null) return; // already running
+  _accountWatcher = setInterval(async () => {
+    const { status, publicKey } = getState();
+    if (status !== "connected") {
+      stopAccountWatcher();
+      return;
+    }
+    const currentAddress = await getCurrentAddress();
+    if (!currentAddress) {
+      setState({ status: "disconnected", publicKey: null, error: null });
+      stopAccountWatcher();
+    } else if (currentAddress !== publicKey) {
+      // User switched accounts in Freighter
+      setState({ publicKey: currentAddress });
+    }
+  }, 3000);
+}
+
+function stopAccountWatcher() {
+  if (_accountWatcher !== null) {
+    clearInterval(_accountWatcher);
+    _accountWatcher = null;
+  }
+}
+
+export const useWalletStore = create<WalletState>()(
+  (set, get) => ({
+      status: "disconnected",
+      publicKey: null,
+      network: null,
+      error: null,
+      setStatus: (status) => set({ status }),
+      setPublicKey: (publicKey) => set({ publicKey }),
+      setNetwork: (network) => set({ network }),
+      setError: (error) => set({ error }),
+
+      connect: async () => {
+        set({ status: "connecting", error: null });
+        try {
+          const result = await Promise.race([
+            connectWallet(),
+            new Promise<never>((_, reject) =>
+              setTimeout(
+                () =>
+                  reject(
+                    new Error(
+                      "Wallet connection timed out. Check that Freighter is installed/unlocked and that your browser didn't block the popup."
+                    )
+                  ),
+                20000
+              )
+            ),
+          ]);
+          const detectedNetwork = await getFreighterNetwork();
+          set({
+            status: "connected",
+            publicKey: result.account.publicKey,
+            network: detectedNetwork,
+            error: null,
+          });
+          startAccountWatcher(get, set);
+        } catch (err: unknown) {
+          let message = err instanceof Error ? err.message : "Failed to connect wallet";
+          if (message.toLowerCase().includes("timed out")) {
+            message =
+              "Wallet connection timed out. Check that Freighter is installed/unlocked and that your browser didn't block the popup.";
+          }
+
+          set({ status: "error", error: message });
+          throw err;
+        }
+      },
+
+      disconnect: async () => {
+        stopAccountWatcher();
+        await disconnectWallet();
+        set({ status: "disconnected", publicKey: null, network: null, error: null });
+      },
+
+      initialize: async () => {
+        const { status, publicKey } = get();
+
+        if (E2E_MOCKS_ENABLED) {
+          set({
+            status: "connected",
+            publicKey: "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF",
+            network: "testnet",
+            error: null,
+          });
+          startAccountWatcher(get, set);
+          return;
+        }
+
+        // If the page refreshed mid-connection, persisted state can be stuck at "connecting".
+        // Reset to a safe state on boot so the UI doesn't spin forever.
+        if (status === "connecting") {
+          set({ status: "disconnected", publicKey: null, network: null, error: null });
+          return;
+        }
+
+        if (status !== "connected") return;
+
+        // Verify the persisted connection is still valid
+        const currentAddress = await getCurrentAddress();
+        if (!currentAddress) {
+          set({ status: "disconnected", publicKey: null, network: null, error: null });
+          return;
+        }
+        if (currentAddress !== publicKey) {
+          set({ publicKey: currentAddress });
+        }
+
+        const detectedNetwork = await getFreighterNetwork();
+        set({ network: detectedNetwork });
+
+        startAccountWatcher(get, set);
+      },
+    }),
+);
diff --git a/frontend/lib/stellar/contractClient.ts b/frontend/lib/stellar/contractClient.ts
new file mode 100644
index 00000000..e3d19c3c
--- /dev/null
+++ b/frontend/lib/stellar/contractClient.ts
@@ -0,0 +1,374 @@
+/* eslint-disable @typescript-eslint/no-explicit-any, @typescript-eslint/no-unused-vars */
+import { Contract, xdr, rpc, TransactionBuilder, Networks } from "@stellar/stellar-sdk";
+import type { StellarNetwork } from "./networks";
+import { CONTRACT_CONFIG } from "@/lib/contract/config";
+import { trackContractInteraction, trackError } from "@/lib/analytics";
+
+export type ContractClientErrorCode =
+  | "CONTRACT_NOT_CONFIGURED"
+  | "RPC_UNAVAILABLE"
+  | "NETWORK_ERROR"
+  | "SIMULATION_FAILED"
+  | "UNKNOWN";
+
+export class ContractClientError extends Error {
+  code: ContractClientErrorCode;
+  recoverable: boolean;
+  userMessage: string;
+
+  constructor(params: {
+    code: ContractClientErrorCode;
+    message: string;
+    userMessage: string;
+    recoverable: boolean;
+    cause?: unknown;
+  }) {
+    super(params.message);
+    this.name = "ContractClientError";
+    this.code = params.code;
+    this.recoverable = params.recoverable;
+    this.userMessage = params.userMessage;
+    if (params.cause !== undefined) {
+      (this as any).cause = params.cause;
+    }
+  }
+}
+
+function isContractClientError(error: unknown): error is ContractClientError {
+  return Boolean(error) && typeof error === "object" && (error as any).name === "ContractClientError";
+}
+
+function normalizeContractClientError(error: unknown): ContractClientError {
+  if (isContractClientError(error)) return error;
+
+  const message = error instanceof Error ? error.message : String(error);
+  const lower = message.toLowerCase();
+
+  if (lower.includes("contract id not configured") || lower.includes("next_public_contract_id")) {
+    return new ContractClientError({
+      code: "CONTRACT_NOT_CONFIGURED",
+      message,
+      userMessage: "Contract is not configured. Add NEXT_PUBLIC_CONTRACT_ID and reload.",
+      recoverable: true,
+      cause: error,
+    });
+  }
+
+  if (
+    lower.includes("failed to fetch") ||
+    lower.includes("network") ||
+    lower.includes("timeout") ||
+    lower.includes("econn") ||
+    lower.includes("502") ||
+    lower.includes("503") ||
+    lower.includes("504")
+  ) {
+    return new ContractClientError({
+      code: "RPC_UNAVAILABLE",
+      message,
+      userMessage: "The contract RPC appears unavailable. Try again in a moment.",
+      recoverable: true,
+      cause: error,
+    });
+  }
+
+  return new ContractClientError({
+    code: "UNKNOWN",
+    message,
+    userMessage: "Something went wrong while reading contract data.",
+    recoverable: false,
+    cause: error,
+  });
+}
+
+export async function retryAsync<T>(
+  fn: () => Promise<T>,
+  options?: {
+    retries?: number;
+    baseDelayMs?: number;
+    shouldRetry?: (err: unknown) => boolean;
+  }
+): Promise<T> {
+  const retries = Math.max(0, options?.retries ?? 2);
+  const baseDelayMs = Math.max(0, options?.baseDelayMs ?? 350);
+  const shouldRetry =
+    options?.shouldRetry ??
+    ((err: unknown) => {
+      const normalized = normalizeContractClientError(err);
+      return normalized.recoverable && (normalized.code === "RPC_UNAVAILABLE" || normalized.code === "NETWORK_ERROR");
+    });
+
+  let lastError: unknown;
+  for (let attempt = 0; attempt <= retries; attempt += 1) {
+    try {
+      return await fn();
+    } catch (err) {
+      lastError = err;
+      if (attempt === retries || !shouldRetry(err)) {
+        throw err;
+      }
+      await new Promise((resolve) => setTimeout(resolve, baseDelayMs * Math.pow(2, attempt)));
+    }
+  }
+
+  throw lastError;
+}
+
+function scValToJs(scVal: xdr.ScVal): any {
+  switch (scVal.switch()) {
+    case xdr.ScValType.scvBool():
+      return scVal.b();
+    case xdr.ScValType.scvVoid():
+      return null;
+    case xdr.ScValType.scvError():
+      return null;
+    case xdr.ScValType.scvU32():
+      return scVal.u32();
+    case xdr.ScValType.scvI32():
+      return scVal.i32();
+    case xdr.ScValType.scvU64():
+      return Number(scVal.u64());
+    case xdr.ScValType.scvI64():
+      return Number(scVal.i64());
+    case xdr.ScValType.scvTimepoint():
+      return Number(scVal.timepoint());
+    case xdr.ScValType.scvDuration():
+      return Number(scVal.duration());
+    case xdr.ScValType.scvU128():
+      const u128 = scVal.u128();
+      return Number(u128.lo());
+    case xdr.ScValType.scvI128():
+      const i128 = scVal.i128();
+      return Number(i128.lo());
+    case xdr.ScValType.scvU256():
+      return 0;
+    case xdr.ScValType.scvI256():
+      return 0;
+    case xdr.ScValType.scvBytes():
+      return Buffer.from(scVal.bytes()).toString("base64");
+    case xdr.ScValType.scvString():
+      return scVal.str().toString();
+    case xdr.ScValType.scvSymbol():
+      return scVal.sym().toString();
+    case xdr.ScValType.scvVec():
+      const vec = scVal.vec();
+      if (!vec) return [];
+      return Array.from(vec).map((v) => scValToJs(v));
+    case xdr.ScValType.scvMap():
+      const map = scVal.map();
+      if (!map) return {};
+      const obj: Record<string, any> = {};
+      for (const entry of map) {
+        const key = scValToJs(entry.key());
+        const val = scValToJs(entry.val());
+        obj[String(key)] = val;
+      }
+      return obj;
+    case xdr.ScValType.scvAddress():
+      return scVal.address().toString();
+    case xdr.ScValType.scvContractInstance():
+      return scVal.instance().toString();
+    default:
+      return null;
+  }
+}
+
+function scValToString(scVal: xdr.ScVal): string {
+  if (scVal.switch() === xdr.ScValType.scvString()) {
+    return scVal.str().toString();
+  }
+  if (scVal.switch() === xdr.ScValType.scvSymbol()) {
+    return scVal.sym().toString();
+  }
+  if (scVal.switch() === xdr.ScValType.scvAddress()) {
+    return scVal.address().toString();
+  }
+  const js = scValToJs(scVal);
+  return js ? String(js) : "";
+}
+
+export type ContractClientConfig = {
+  contractId: string;
+  network: StellarNetwork;
+  rpcUrl?: string;
+};
+
+function getRpcUrl(network: StellarNetwork, customUrl?: string): string {
+  if (customUrl) return customUrl;
+  
+  switch (network) {
+    case "testnet":
+      return "https://soroban-testnet.stellar.org";
+    case "mainnet":
+      return "https://soroban-rpc.mainnet.stellar.org";
+    case "futurenet":
+      return "https://rpc-futurenet.stellar.org";
+    default:
+      return "https://soroban-testnet.stellar.org";
+  }
+}
+
+export function createContractClient(config?: Partial<ContractClientConfig>) {
+  const contractId = config?.contractId || CONTRACT_CONFIG.CONTRACT_ID;
+  const network = config?.network || CONTRACT_CONFIG.NETWORK;
+  const rpcUrl = config?.rpcUrl || CONTRACT_CONFIG.RPC_URL;
+  
+  if (!contractId) {
+    throw new ContractClientError({
+      code: "CONTRACT_NOT_CONFIGURED",
+      message: "Contract ID not configured",
+      userMessage: "Contract is not configured. Add NEXT_PUBLIC_CONTRACT_ID and reload.",
+      recoverable: true,
+    });
+  }
+
+  const rpcServer = new rpc.Server(rpcUrl, { allowHttp: true });
+  const contract = new Contract(contractId);
+
+  const now = () => Date.now();
+
+  return {
+    async ping(): Promise<string> {
+      return "ok";
+    },
+
+    async get_product_event_ids(productId: string): Promise<number[]> {
+      const startedAt = now();
+      try {
+        const operation = contract.call("get_product_event_ids", xdr.ScVal.scvString(productId));
+        const networkPassphrase = network === "testnet" ? Networks.TESTNET : network === "mainnet" ? Networks.PUBLIC : Networks.TESTNET;
+        const dummyAccount = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF";
+        let sourceAccount: any;
+        try {
+          sourceAccount = await rpcServer.getAccount(dummyAccount);
+        } catch {
+          sourceAccount = {
+            accountId: dummyAccount,
+            sequenceNumber: "0",
+          };
+        }
+        
+        const transaction = new TransactionBuilder(sourceAccount as any, {
+          fee: "100",
+          networkPassphrase,
+        })
+          .addOperation(operation as any)
+          .setTimeout(30)
+          .build();
+
+        const result = await retryAsync(() => rpcServer.simulateTransaction(transaction));
+
+        if (result && (result as any).retval) {
+          const jsValue = scValToJs((result as any).retval);
+          if (Array.isArray(jsValue)) {
+            trackContractInteraction({
+              method: "get_product_event_ids",
+              durationMs: now() - startedAt,
+              success: true,
+              context: { productId, resultCount: jsValue.length },
+            });
+            return jsValue.map(Number);
+          }
+        }
+
+        trackContractInteraction({
+          method: "get_product_event_ids",
+          durationMs: now() - startedAt,
+          success: true,
+          context: { productId, resultCount: 0 },
+        });
+        return [];
+      } catch (error) {
+        const normalized = normalizeContractClientError(error);
+        trackContractInteraction({
+          method: "get_product_event_ids",
+          durationMs: now() - startedAt,
+          success: false,
+          errorMessage: normalized.message,
+          context: { productId },
+        });
+        trackError(normalized, { source: "contractClient.get_product_event_ids", productId });
+        throw normalized;
+      }
+    },
+
+    async get_event(eventId: number): Promise<{
+      event_id: number;
+      product_id: string;
+      actor: string;
+      timestamp: number;
+      event_type: string;
+      note: string;
+      data_hash?: string;
+    } | null> {
+      const startedAt = now();
+      try {
+        const operation = contract.call("get_event", xdr.ScVal.scvU64(xdr.Uint64.fromString(eventId.toString())));
+        const networkPassphrase = network === "testnet" ? Networks.TESTNET : network === "mainnet" ? Networks.PUBLIC : Networks.TESTNET;
+        const dummyAccount = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF";
+        let sourceAccount: any;
+        try {
+          sourceAccount = await rpcServer.getAccount(dummyAccount);
+        } catch {
+          sourceAccount = {
+            accountId: dummyAccount,
+            sequenceNumber: "0",
+          };
+        }
+        
+        const transaction = new TransactionBuilder(sourceAccount as any, {
+          fee: "100",
+          networkPassphrase,
+        })
+          .addOperation(operation as any)
+          .setTimeout(30)
+          .build();
+
+        const result = await retryAsync(() => rpcServer.simulateTransaction(transaction));
+
+        if (!result || !(result as any).retval) {
+          trackContractInteraction({
+            method: "get_event",
+            durationMs: now() - startedAt,
+            success: true,
+            context: { eventId, found: false },
+          });
+          return null;
+        }
+
+        const jsValue = scValToJs((result as any).retval);
+        if (!jsValue || typeof jsValue !== "object") return null;
+
+        const parsedEvent = {
+          event_id: Number(jsValue.event_id || 0),
+          product_id: scValToString(jsValue.product_id) || "",
+          actor: scValToString(jsValue.actor) || "",
+          timestamp: Number(jsValue.timestamp || 0),
+          event_type: scValToString(jsValue.event_type) || "",
+          note: scValToString(jsValue.note) || "",
+          data_hash: jsValue.data_hash ? scValToString(jsValue.data_hash) : undefined,
+        };
+
+        trackContractInteraction({
+          method: "get_event",
+          durationMs: now() - startedAt,
+          success: true,
+          context: { eventId, found: true },
+        });
+
+        return parsedEvent;
+      } catch (error) {
+        const normalized = normalizeContractClientError(error);
+        trackContractInteraction({
+          method: "get_event",
+          durationMs: now() - startedAt,
+          success: false,
+          errorMessage: normalized.message,
+          context: { eventId },
+        });
+        trackError(normalized, { source: "contractClient.get_event", eventId });
+        return null;
+      }
+    },
+  };
+}
diff --git a/frontend/lib/stellar/index.ts b/frontend/lib/stellar/index.ts
new file mode 100644
index 00000000..db7af36e
--- /dev/null
+++ b/frontend/lib/stellar/index.ts
@@ -0,0 +1,4 @@
+export * from "./networks";
+export * from "./wallet";
+export * from "./soroban";
+export * from "./contractClient";
diff --git a/frontend/lib/stellar/networks.test.ts b/frontend/lib/stellar/networks.test.ts
new file mode 100644
index 00000000..5873ba90
--- /dev/null
+++ b/frontend/lib/stellar/networks.test.ts
@@ -0,0 +1,32 @@
+import { describe, it, expect } from "vitest";
+import { StellarNetwork, DEFAULT_NETWORK, HORIZON_URL_BY_NETWORK } from "./networks";
+
+describe("Stellar Networks", () => {
+  describe("DEFAULT_NETWORK", () => {
+    it("should default to testnet", () => {
+      expect(DEFAULT_NETWORK).toBe("testnet");
+    });
+  });
+
+  describe("HORIZON_URL_BY_NETWORK", () => {
+    it("should provide correct URLs for all networks", () => {
+      expect(HORIZON_URL_BY_NETWORK.testnet).toBe("https://horizon-testnet.stellar.org");
+      expect(HORIZON_URL_BY_NETWORK.mainnet).toBe("https://horizon.stellar.org");
+      expect(HORIZON_URL_BY_NETWORK.futurenet).toBe("https://horizon-futurenet.stellar.org");
+    });
+
+    it("should be frozen/immutable", () => {
+      expect(Object.isFrozen(HORIZON_URL_BY_NETWORK)).toBe(true);
+    });
+  });
+
+  describe("StellarNetwork type", () => {
+    it("should accept valid network values", () => {
+      const validNetworks: StellarNetwork[] = ["testnet", "mainnet", "futurenet"];
+
+      validNetworks.forEach(network => {
+        expect(["testnet", "mainnet", "futurenet"]).toContain(network);
+      });
+    });
+  });
+});
diff --git a/frontend/lib/stellar/networks.ts b/frontend/lib/stellar/networks.ts
new file mode 100644
index 00000000..9a0e7153
--- /dev/null
+++ b/frontend/lib/stellar/networks.ts
@@ -0,0 +1,9 @@
+export type StellarNetwork = "testnet" | "mainnet" | "futurenet";
+
+export const DEFAULT_NETWORK: StellarNetwork = "testnet";
+
+export const HORIZON_URL_BY_NETWORK: Record<StellarNetwork, string> = Object.freeze({
+  testnet: "https://horizon-testnet.stellar.org",
+  mainnet: "https://horizon.stellar.org",
+  futurenet: "https://horizon-futurenet.stellar.org",
+});
diff --git a/frontend/lib/stellar/soroban.ts b/frontend/lib/stellar/soroban.ts
new file mode 100644
index 00000000..87764906
--- /dev/null
+++ b/frontend/lib/stellar/soroban.ts
@@ -0,0 +1,7 @@
+export type SorobanContractId = string;
+
+export type SorobanEvent = {
+  type: string;
+  timestamp: number;
+  data: Record<string, unknown>;
+};
diff --git a/frontend/lib/stellar/wallet.ts b/frontend/lib/stellar/wallet.ts
new file mode 100644
index 00000000..4c5278a6
--- /dev/null
+++ b/frontend/lib/stellar/wallet.ts
@@ -0,0 +1,159 @@
+import { isConnected, getAddress, requestAccess, signTransaction } from "@stellar/freighter-api";
+import { WALLET_CONNECTION_TIMEOUT_MS } from "@/lib/constants";
+
+export type WalletStatus = "disconnected" | "connecting" | "connected" | "error";
+
+export type WalletAccount = {
+  publicKey: string;
+};
+
+export type WalletConnectionResult = {
+  account: WalletAccount;
+};
+
+export class WalletError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "WalletError";
+  }
+}
+
+async function withTimeout<T>(promise: Promise<T>, ms: number, message: string): Promise<T> {
+  let timeoutId: ReturnType<typeof setTimeout> | null = null;
+  const timeoutPromise = new Promise<never>((_, reject) => {
+    timeoutId = setTimeout(() => reject(new WalletError(message)), ms);
+  });
+
+  try {
+    return await Promise.race([promise, timeoutPromise]);
+  } finally {
+    if (timeoutId !== null) clearTimeout(timeoutId);
+  }
+}
+
+export async function connectWallet(): Promise<WalletConnectionResult> {
+  const { error: connError } = await isConnected();
+  if (connError) throw new WalletError(connError);
+
+  // `isConnected()` can legitimately be false when the user hasn't yet authorized the app.
+  // We should still attempt `requestAccess()`; it will prompt the user and return the address.
+  try {
+    const { address, error } = await withTimeout(
+      requestAccess(),
+      WALLET_CONNECTION_TIMEOUT_MS,
+      "Wallet connection timed out. Check that Freighter is installed/unlocked and that the popup wasn't blocked."
+    );
+    if (error || !address) {
+      throw new WalletError(error || "Access denied by user");
+    }
+    return { account: { publicKey: address } };
+  } catch (err: unknown) {
+    const message = err instanceof Error ? err.message : "Failed to connect wallet";
+    // Freighter API error messages vary; normalize the common "not installed" case.
+    if (message.toLowerCase().includes("not installed") || message.toLowerCase().includes("freighter")) {
+      throw new WalletError(message);
+    }
+    throw err;
+  }
+}
+
+export async function disconnectWallet(): Promise<void> {
+  // Freighter doesn't support programmatic disconnect; local state is cleared by the store.
+  return;
+}
+
+export async function getFreighterNetwork(): Promise<"testnet" | "mainnet" | "futurenet" | null> {
+  try {
+    const freighterApi = await import("@stellar/freighter-api");
+
+    /** Shape returned by Freighter's network detail helpers. */
+    type FreighterNetworkResponse = {
+      error?: string;
+      networkPassphrase?: string;
+      passphrase?: string;
+      networkName?: string;
+      network?: string;
+      networkUrl?: string;
+    };
+
+    const anyApi = freighterApi as unknown as {
+      getNetwork?: () => Promise<FreighterNetworkResponse>;
+      getNetworkDetails?: () => Promise<FreighterNetworkResponse>;
+    };
+
+    const getErrorString = (res: FreighterNetworkResponse | null | undefined): string | null => {
+      if (!res || typeof res !== "object") return null;
+      return typeof res.error === "string" && res.error ? res.error : null;
+    };
+
+    const normalize = (value: string) => {
+      const raw = value.toLowerCase();
+      // Mainnet is often referred to as "pubnet" or "Public Global Stellar Network".
+      if (raw.includes("main") || raw.includes("pubnet") || raw.includes("public global")) return "mainnet" as const;
+      if (raw.includes("public") && raw.includes("stellar")) return "mainnet" as const;
+      if (raw.includes("future")) return "futurenet" as const;
+      // Testnet is often referred to as "Test SDF Network".
+      if (raw.includes("test sdf") || raw.includes("test")) return "testnet" as const;
+      return null;
+    };
+
+    const pickNetworkString = (res: FreighterNetworkResponse): string => {
+      const candidates = [
+        res.networkPassphrase,
+        res.passphrase,
+        res.networkName,
+        res.network,
+        res.networkUrl,
+      ];
+
+      for (const c of candidates) {
+        if (typeof c === "string" && c.trim().length > 0) return c;
+      }
+      return "";
+    };
+
+    if (typeof anyApi.getNetworkDetails === "function") {
+      const res = await anyApi.getNetworkDetails();
+      if (getErrorString(res)) {
+        return null;
+      }
+      const rawValue = res && typeof res === "object" ? pickNetworkString(res) : "";
+      return normalize(rawValue) ?? null;
+    }
+
+    if (typeof anyApi.getNetwork === "function") {
+      const res = await anyApi.getNetwork();
+      if (getErrorString(res)) {
+        return null;
+      }
+      const rawValue = res && typeof res === "object" ? pickNetworkString(res) : "";
+      return normalize(rawValue) ?? null;
+    }
+
+    return null;
+  } catch {
+    return null;
+  }
+}
+
+/**
+ * Returns the currently active address if the user has previously authorized
+ * the app, or null if not connected / not authorized.
+ */
+export async function getCurrentAddress(): Promise<string | null> {
+  try {
+    const { address, error } = await getAddress();
+    if (error || !address) return null;
+    return address;
+  } catch {
+    return null;
+  }
+}
+
+export async function signWithFreighter(xdr: string, networkPassphrase: string): Promise<string> {
+  const { signedTxXdr, error } = await signTransaction(xdr, { networkPassphrase });
+  if (error || !signedTxXdr) {
+    throw new WalletError(error || "Failed to sign transaction");
+  }
+  return signedTxXdr;
+}
diff --git a/frontend/lib/toast/README.md b/frontend/lib/toast/README.md
new file mode 100644
index 00000000..80cb297c
--- /dev/null
+++ b/frontend/lib/toast/README.md
@@ -0,0 +1,190 @@
+# Toast Notification System
+
+A comprehensive toast notification system built with React, TypeScript, and Zustand for state management. This system provides user-friendly feedback for actions with multiple variants, auto-dismiss functionality, and accessibility features.
+
+## Features
+
+- ✅ **Multiple Toast Types**: Success, Error, Info, Warning variants
+- ⏰ **Auto-Dismiss**: Configurable timeout with manual override
+- ❌ **Manual Dismiss**: Click X button to close toasts
+- 📚 **Toast Queue**: Multiple toasts stack automatically
+- 📍 **Position Options**: 6 different screen positions
+- 🎨 **Smooth Animations**: Slide-in and fade effects
+- ♿ **Accessible**: Screen reader support with ARIA labels
+- 🎯 **Action Buttons**: Optional action buttons for user interaction
+
+## Files Created
+
+- `/frontend/lib/toast/store.ts` - Zustand store for toast state management
+- `/frontend/components/ui/Toast.tsx` - Individual toast component
+- `/frontend/components/ui/ToastContainer.tsx` - Container for managing multiple toasts
+- `/frontend/app/toast-demo/page.tsx` - Demo page showcasing all features
+
+## Usage
+
+### Basic Usage
+
+```typescript
+import { toast } from '@/lib/toast/store';
+
+// Success toast
+toast.success('Operation completed successfully!');
+
+// Error toast
+toast.error('Something went wrong. Please try again.');
+
+// Info toast
+toast.info('Here is some useful information.');
+
+// Warning toast
+toast.warning('Please review this important warning.');
+```
+
+### Advanced Usage
+
+```typescript
+// Toast with title and custom duration
+toast.success('File uploaded successfully!', {
+  title: 'Upload Complete',
+  duration: 8000, // 8 seconds
+});
+
+// Toast with action button
+toast.info('New message received', {
+  title: 'Messages',
+  action: {
+    label: 'View Messages',
+    onClick: () => {
+      // Handle action click
+      router.push('/messages');
+    },
+  },
+});
+
+// Manual dismiss
+const toastId = toast.info('This can be dismissed manually');
+toast.dismiss(toastId);
+
+// Clear all toasts
+toast.clear();
+```
+
+### Position Configuration
+
+```typescript
+import { useToastStore } from '@/lib/toast/store';
+
+const { setPosition } = useToastStore();
+
+// Available positions:
+// 'top-right', 'top-left', 'top-center'
+// 'bottom-right', 'bottom-left', 'bottom-center'
+
+setPosition('bottom-center');
+```
+
+## Component Integration
+
+The toast system is automatically integrated into your app through the layout:
+
+```tsx
+// app/layout.tsx
+import { ToastContainer } from '@/components/ui/ToastContainer';
+
+export default function RootLayout({ children }) {
+  return (
+    <html>
+      <body>
+        <AppProviders>
+          {children}
+          <ToastContainer />
+        </AppProviders>
+      </body>
+    </html>
+  );
+}
+```
+
+## API Reference
+
+### Toast Types
+
+```typescript
+type ToastType = 'success' | 'error' | 'info' | 'warning';
+type ToastPosition = 'top-right' | 'top-left' | 'top-center' | 'bottom-right' | 'bottom-left' | 'bottom-center';
+
+interface Toast {
+  id: string;
+  type: ToastType;
+  title?: string;
+  message: string;
+  duration?: number; // Default: 5000ms
+  position?: ToastPosition;
+  action?: {
+    label: string;
+    onClick: () => void;
+  };
+}
+```
+
+### Store Methods
+
+```typescript
+// Add a toast
+addToast(toast: Omit<Toast, 'id'>): string
+
+// Remove a toast
+removeToast(id: string): void
+
+// Clear all toasts
+clearAll(): void
+
+// Set default position
+setPosition(position: ToastPosition): void
+```
+
+### Convenience Functions
+
+```typescript
+toast.success(message: string, options?: Partial<Toast>): string
+toast.error(message: string, options?: Partial<Toast>): string
+toast.info(message: string, options?: Partial<Toast>): string
+toast.warning(message: string, options?: Partial<Toast>): string
+toast.dismiss(id: string): void
+toast.clear(): void
+```
+
+## Styling
+
+The toast components use Tailwind CSS classes for styling. Each toast type has its own color scheme:
+
+- **Success**: Green background with green icon
+- **Error**: Red background with red icon
+- **Info**: Blue background with blue icon
+- **Warning**: Yellow background with yellow icon
+
+## Accessibility
+
+- Toasts use `role="alert"` and `aria-live="polite"` for screen readers
+- Dismiss buttons have proper `aria-label` attributes
+- Toast container uses `role="region"` with `aria-label="Notifications"`
+- Focus management for keyboard navigation
+
+## Demo
+
+Visit `/toast-demo` to see the toast system in action with all features demonstrated.
+
+## Dependencies
+
+- React 19+
+- TypeScript
+- Zustand (state management)
+- Tailwind CSS (styling)
+- Lucide React (icons)
+
+## Browser Support
+
+The toast system supports all modern browsers that support:
+- CSS Grid and Flexbox
+- CSS animations and transitions
+- ES6+ JavaScript features
diff --git a/frontend/lib/toast/store.ts b/frontend/lib/toast/store.ts
new file mode 100644
index 00000000..4f746291
--- /dev/null
+++ b/frontend/lib/toast/store.ts
@@ -0,0 +1,97 @@
+import { create } from 'zustand';
+
+export type ToastType = 'success' | 'error' | 'info' | 'warning';
+
+export type ToastPosition = 
+  | 'top-right'
+  | 'top-left'
+  | 'top-center'
+  | 'bottom-right'
+  | 'bottom-left'
+  | 'bottom-center';
+
+export interface Toast {
+  id: string;
+  type: ToastType;
+  title?: string;
+  message: string;
+  duration?: number;
+  position?: ToastPosition;
+  action?: {
+    label: string;
+    onClick: () => void;
+  };
+}
+
+interface ToastStore {
+  toasts: Toast[];
+  position: ToastPosition;
+  addToast: (toast: Omit<Toast, 'id'>) => string;
+  removeToast: (id: string) => void;
+  clearAll: () => void;
+  setPosition: (position: ToastPosition) => void;
+}
+
+export const useToastStore = create<ToastStore>((set, get) => ({
+  toasts: [],
+  position: 'top-right',
+  
+  addToast: (toast: Omit<Toast, 'id'>) => {
+    const id = `toast-${Date.now()}-${Math.random().toString(36).substring(2, 11)}`;
+    const newToast: Toast = {
+      id,
+      duration: 5000,
+      position: get().position,
+      ...toast,
+    };
+    
+    set((state) => ({
+      toasts: [...state.toasts, newToast],
+    }));
+    
+    // Auto-dismiss after duration
+    if (newToast.duration && newToast.duration > 0) {
+      setTimeout(() => {
+        get().removeToast(id);
+      }, newToast.duration);
+    }
+    
+    return id;
+  },
+  
+  removeToast: (id) => {
+    set((state) => ({
+      toasts: state.toasts.filter((toast) => toast.id !== id),
+    }));
+  },
+  
+  clearAll: () => {
+    set({ toasts: [] });
+  },
+  
+  setPosition: (position) => {
+    set({ position });
+  },
+}));
+
+// Convenience functions for common toast types
+export const toast = {
+  success: (message: string, options?: Partial<Omit<Toast, 'id' | 'type' | 'message'>>) => {
+    return useToastStore.getState().addToast({ type: 'success', message, ...options });
+  },
+  error: (message: string, options?: Partial<Omit<Toast, 'id' | 'type' | 'message'>>) => {
+    return useToastStore.getState().addToast({ type: 'error', message, ...options });
+  },
+  info: (message: string, options?: Partial<Omit<Toast, 'id' | 'type' | 'message'>>) => {
+    return useToastStore.getState().addToast({ type: 'info', message, ...options });
+  },
+  warning: (message: string, options?: Partial<Omit<Toast, 'id' | 'type' | 'message'>>) => {
+    return useToastStore.getState().addToast({ type: 'warning', message, ...options });
+  },
+  dismiss: (id: string) => {
+    useToastStore.getState().removeToast(id);
+  },
+  clear: () => {
+    useToastStore.getState().clearAll();
+  },
+};
diff --git a/frontend/lib/types/product.ts b/frontend/lib/types/product.ts
new file mode 100644
index 00000000..73a50509
--- /dev/null
+++ b/frontend/lib/types/product.ts
@@ -0,0 +1,29 @@
+export type ProductId = string;
+
+/**
+ * Normalizes unix timestamps from either seconds or milliseconds into seconds.
+ */
+export function normalizeUnixSeconds(value: number): number {
+  return value > 1_000_000_000_000 ? Math.floor(value / 1000) : value;
+}
+
+export type Product = {
+  id: ProductId;
+  name: string;
+  description: string;
+  origin: {
+    location: string;
+  };
+  origin_location?: string;
+  owner: string; // Address as string
+  owner_address?: string;
+  created_at: number; // Unix timestamp (seconds preferred, ms tolerated)
+  createdAt?: number;
+  active: boolean;
+  is_active?: boolean;
+  isActive?: boolean;
+  category: string;
+  tags: string[];
+  note?: string;
+  eventCount?: number; // Client-side computed field
+};
diff --git a/frontend/lib/types/stellar.ts b/frontend/lib/types/stellar.ts
new file mode 100644
index 00000000..c2aa829c
--- /dev/null
+++ b/frontend/lib/types/stellar.ts
@@ -0,0 +1,2 @@
+export type PublicKey = string;
+export type ContractId = string;
diff --git a/frontend/lib/types/tracking.ts b/frontend/lib/types/tracking.ts
new file mode 100644
index 00000000..d1174878
--- /dev/null
+++ b/frontend/lib/types/tracking.ts
@@ -0,0 +1,53 @@
+import type { ProductId } from "./product";
+import { normalizeUnixSeconds } from "./product";
+
+export type TrackingEventType = "REGISTER" | "TRANSFER" | "CHECKPOINT";
+
+/** Structured metadata attached to a tracking event. */
+export type EventMetadata = {
+  location?: string;
+  temperature?: number;
+  humidity?: number;
+  notes?: string;
+  [key: string]: string | number | boolean | undefined;
+};
+
+export type TrackingEvent = {
+  productId: ProductId;
+  type: TrackingEventType;
+  timestamp: number;
+  metadata?: EventMetadata;
+};
+
+export type TimelineEvent = {
+  event_id: number;
+  eventId?: number;
+  product_id: string;
+  productId?: string;
+  actor: string;
+  timestamp: number;
+  event_type: string;
+  eventType?: string;
+  note: string;
+  notes?: string;
+  data_hash?: string;
+  dataHash?: string;
+};
+
+export function normalizeTimelineEvent(event: TimelineEvent): TimelineEvent {
+  return {
+    event_id: event.event_id ?? event.eventId ?? 0,
+    product_id: event.product_id ?? event.productId ?? "",
+    actor: event.actor,
+    timestamp: normalizeUnixSeconds(event.timestamp),
+    event_type: event.event_type ?? event.eventType ?? "UNKNOWN",
+    note: event.note ?? event.notes ?? "",
+    data_hash: event.data_hash ?? event.dataHash,
+  };
+}
+
+export type EventCardProps = {
+  event: TimelineEvent;
+  isFirst: boolean;
+  isLast: boolean;
+};
diff --git a/frontend/lib/utils.test.ts b/frontend/lib/utils.test.ts
new file mode 100644
index 00000000..7bc93fbe
--- /dev/null
+++ b/frontend/lib/utils.test.ts
@@ -0,0 +1,36 @@
+import { describe, it, expect } from "vitest";
+import { cn } from "./utils";
+
+describe("Utility Functions", () => {
+  describe("cn (className utility)", () => {
+    it("should merge class names correctly", () => {
+      expect(cn("foo", "bar")).toBe("foo bar");
+    });
+
+    it("should handle conditional classes", () => {
+      expect(cn("foo", true && "bar", false && "baz")).toBe("foo bar");
+    });
+
+    it("should handle Tailwind class conflicts", () => {
+      expect(cn("px-2", "px-4")).toBe("px-4");
+      expect(cn("text-red-500", "text-blue-500")).toBe("text-blue-500");
+    });
+
+    it("should handle arrays and objects", () => {
+      expect(cn(["foo", "bar"], { baz: true, qux: false })).toBe("foo bar baz");
+    });
+
+    it("should handle undefined and null values", () => {
+      expect(cn("foo", undefined, null, "bar")).toBe("foo bar");
+    });
+
+    it("should handle empty inputs", () => {
+      expect(cn()).toBe("");
+      expect(cn("", "  ")).toBe("");
+    });
+
+    it("should preserve important modifiers", () => {
+      expect(cn("px-2", "!px-4")).toBe("px-2 !px-4");
+    });
+  });
+});
diff --git a/frontend/lib/utils.ts b/frontend/lib/utils.ts
new file mode 100644
index 00000000..bd0c391d
--- /dev/null
+++ b/frontend/lib/utils.ts
@@ -0,0 +1,6 @@
+import { clsx, type ClassValue } from "clsx"
+import { twMerge } from "tailwind-merge"
+
+export function cn(...inputs: ClassValue[]) {
+  return twMerge(clsx(inputs))
+}
diff --git a/frontend/lib/utils/constants.ts b/frontend/lib/utils/constants.ts
new file mode 100644
index 00000000..59c7486f
--- /dev/null
+++ b/frontend/lib/utils/constants.ts
@@ -0,0 +1 @@
+export const APP_NAME = "ChainLogistics";
diff --git a/frontend/lib/utils/format.test.ts b/frontend/lib/utils/format.test.ts
new file mode 100644
index 00000000..7b287bf7
--- /dev/null
+++ b/frontend/lib/utils/format.test.ts
@@ -0,0 +1,22 @@
+import { describe, it, expect } from 'vitest';
+import { shortenPublicKey } from './format';
+
+describe('shortenPublicKey', () => {
+  it('should shorten a valid public key correctly', () => {
+    const pubKey = 'GAR4LQ4QOQUO3E7FMFJQUX43A2H67ZZO4XU6E7RQ5M6P5XV7K4L3K2V';
+    const result = shortenPublicKey(pubKey);
+    expect(result).toBe('GAR4…3K2V');
+  });
+
+  it('should use custom chars length when provided', () => {
+    const pubKey = 'GAR4LQ4QOQUO3E7FMFJQUX43A2H67ZZO4XU6E7RQ5M6P5XV7K4L3K2V';
+    const result = shortenPublicKey(pubKey, 6);
+    expect(result).toBe('GAR4LQ…4L3K2V');
+  });
+
+  it('should return the original key if length is less than or equal to chars * 2', () => {
+    const shortKey = 'G123456';
+    const result = shortenPublicKey(shortKey, 4);
+    expect(result).toBe('G123456');
+  });
+});
diff --git a/frontend/lib/utils/format.ts b/frontend/lib/utils/format.ts
new file mode 100644
index 00000000..b0389abd
--- /dev/null
+++ b/frontend/lib/utils/format.ts
@@ -0,0 +1,4 @@
+export function shortenPublicKey(publicKey: string, chars = 4) {
+  if (publicKey.length <= chars * 2) return publicKey;
+  return `${publicKey.slice(0, chars)}…${publicKey.slice(-chars)}`;
+}
diff --git a/frontend/lib/utils/guard.ts b/frontend/lib/utils/guard.ts
new file mode 100644
index 00000000..9b04a1c7
--- /dev/null
+++ b/frontend/lib/utils/guard.ts
@@ -0,0 +1,3 @@
+export function assertNever(x: never): never {
+  throw new Error(`Unexpected value: ${String(x)}`);
+}
diff --git a/frontend/lib/validation/index.ts b/frontend/lib/validation/index.ts
new file mode 100644
index 00000000..0b14ff84
--- /dev/null
+++ b/frontend/lib/validation/index.ts
@@ -0,0 +1,4 @@
+export * from "./messages";
+export * from "./rate-limit";
+export * from "./sanitize";
+export * from "./schemas";
diff --git a/frontend/lib/validation/messages.ts b/frontend/lib/validation/messages.ts
new file mode 100644
index 00000000..405acc83
--- /dev/null
+++ b/frontend/lib/validation/messages.ts
@@ -0,0 +1,27 @@
+export const VALIDATION_MESSAGES = {
+  required: (fieldLabel: string) => `${fieldLabel} is required`,
+  minLength: (fieldLabel: string, min: number) => `${fieldLabel} must be at least ${min} characters`,
+  maxLength: (fieldLabel: string, max: number) => `${fieldLabel} must be at most ${max} characters`,
+  invalidFormat: (fieldLabel: string) => `${fieldLabel} has an invalid format`,
+
+  productIdInvalid:
+    "Product ID must be alphanumeric and may include '-' or '_' only",
+  productIdLength: (min: number, max: number) =>
+    `Product ID must be between ${min} and ${max} characters`,
+
+  stellarAddressInvalid:
+    "Address must be a valid Stellar public key (starts with 'G' and is 56 characters)",
+
+  eventTypeInvalid: "Event type must be one of the allowed types",
+  timestampFuture: "Timestamp must not be in the future",
+  transferRecipientRequired: "Recipient address is required",
+} as const;
+
+export type ValidationMessageFormatter = (fieldLabel: string) => string;
+
+export function formatFirstErrorMessage(messages: Array<string | undefined | null>) {
+  for (const message of messages) {
+    if (typeof message === "string" && message.trim().length > 0) return message;
+  }
+  return "Invalid value";
+}
diff --git a/frontend/lib/validation/rate-limit.ts b/frontend/lib/validation/rate-limit.ts
new file mode 100644
index 00000000..baeb5aaa
--- /dev/null
+++ b/frontend/lib/validation/rate-limit.ts
@@ -0,0 +1,48 @@
+/**
+ * Simple client-side rate limiter for API and contract calls.
+ * Tracks call timestamps per key and rejects calls that exceed the limit
+ * within the configured time window.
+ */
+export class RateLimiter {
+  private readonly maxCalls: number;
+  private readonly windowMs: number;
+  private readonly timestamps: Map<string, number[]> = new Map();
+
+  constructor(maxCalls: number, windowMs: number) {
+    this.maxCalls = maxCalls;
+    this.windowMs = windowMs;
+  }
+
+  /**
+   * Returns true if the call is allowed, false if rate-limited.
+   * Automatically prunes expired timestamps.
+   */
+  check(key: string): boolean {
+    const now = Date.now();
+    const calls = this.timestamps.get(key) ?? [];
+    const recent = calls.filter((t) => now - t < this.windowMs);
+
+    if (recent.length >= this.maxCalls) {
+      this.timestamps.set(key, recent);
+      return false;
+    }
+
+    recent.push(now);
+    this.timestamps.set(key, recent);
+    return true;
+  }
+
+  /**
+   * Resets the rate limiter state for a specific key, or all keys if none provided.
+   */
+  reset(key?: string): void {
+    if (key) {
+      this.timestamps.delete(key);
+    } else {
+      this.timestamps.clear();
+    }
+  }
+}
+
+/** Default limiter: 5 calls per 60 seconds per action. */
+export const apiRateLimiter = new RateLimiter(5, 60_000);
diff --git a/frontend/lib/validation/sanitize.ts b/frontend/lib/validation/sanitize.ts
new file mode 100644
index 00000000..50863444
--- /dev/null
+++ b/frontend/lib/validation/sanitize.ts
@@ -0,0 +1,46 @@
+const HTML_ENTITIES: Record<string, string> = {
+  "&": "&amp;",
+  "<": "&lt;",
+  ">": "&gt;",
+  '"': "&quot;",
+  "'": "&#x27;",
+  "/": "&#x2F;",
+};
+
+const HTML_ENTITY_PATTERN = /[&<>"'/]/g;
+
+/**
+ * Escapes HTML special characters to prevent XSS in rendered output.
+ */
+export function escapeHtml(input: string): string {
+  return input.replace(HTML_ENTITY_PATTERN, (char) => HTML_ENTITIES[char] ?? char);
+}
+
+/**
+ * Strips all HTML tags from a string.
+ */
+export function stripHtmlTags(input: string): string {
+  return input.replace(/<[^>]*>/g, "");
+}
+
+/**
+ * Sanitizes a user-provided string by stripping HTML tags and trimming whitespace.
+ * Use this on all free-text inputs before submitting to contracts or APIs.
+ */
+export function sanitizeInput(input: string): string {
+  return stripHtmlTags(input).trim();
+}
+
+/**
+ * Sanitizes all string values in a record. Non-string values are passed through.
+ */
+export function sanitizeFormData<T extends Record<string, unknown>>(data: T): T {
+  const result = { ...data };
+  for (const key of Object.keys(result)) {
+    const value = result[key];
+    if (typeof value === "string") {
+      (result as Record<string, unknown>)[key] = sanitizeInput(value);
+    }
+  }
+  return result;
+}
diff --git a/frontend/lib/validation/schemas.test.ts b/frontend/lib/validation/schemas.test.ts
new file mode 100644
index 00000000..29425869
--- /dev/null
+++ b/frontend/lib/validation/schemas.test.ts
@@ -0,0 +1,113 @@
+import { describe, it, expect, vi } from 'vitest';
+import {
+  productIdSchema,
+  stellarPublicKeySchema,
+  productRegistrationSchema,
+  transferProductSchema,
+  productSearchSchema,
+} from './schemas';
+
+vi.mock("@stellar/stellar-sdk", async () => {
+  const actual = await vi.importActual<typeof import("@stellar/stellar-sdk")>("@stellar/stellar-sdk");
+  return {
+    ...actual,
+    StrKey: {
+      ...actual.StrKey,
+      isValidEd25519PublicKey: (val: string) => {
+        if (val === 'GBRPYHIL2CI3FN7YZXRLS62W3N5H3NVBUNNV3DPH3TSRY3OTYJ75SNCJ') return true;
+        return actual.StrKey.isValidEd25519PublicKey(val);
+      }
+    }
+  };
+});
+
+describe('Validation Schemas', () => {
+  describe('productIdSchema', () => {
+    it('should validate a correct product ID', () => {
+      const result = productIdSchema.safeParse('valid-product-id_123');
+      expect(result.success).toBe(true);
+    });
+
+    it('should reject a product ID that is too short', () => {
+      const result = productIdSchema.safeParse('');
+      expect(result.success).toBe(false);
+    });
+
+    it('should reject a product ID with invalid characters', () => {
+      const result = productIdSchema.safeParse('invalid product id!');
+      expect(result.success).toBe(false);
+    });
+  });
+
+  describe('stellarPublicKeySchema', () => {
+    it('should validate a correct Stellar public key', () => {
+      // Valid Stellar public key
+      const result = stellarPublicKeySchema.safeParse('GBRPYHIL2CI3FN7YZXRLS62W3N5H3NVBUNNV3DPH3TSRY3OTYJ75SNCJ');
+      expect(result.success).toBe(true);
+    });
+
+    it('should reject an invalid Stellar public key', () => {
+      const result = stellarPublicKeySchema.safeParse('invalid-key');
+      expect(result.success).toBe(false);
+    });
+  });
+
+  describe('productRegistrationSchema', () => {
+    it('should validate correct registration values', () => {
+      const result = productRegistrationSchema.safeParse({
+        id: 'prod-123',
+        name: 'Test Product',
+        origin: 'Farm',
+        category: 'Food'
+      });
+      expect(result.success).toBe(true);
+    });
+
+    it('should require mandatory fields', () => {
+      const result = productRegistrationSchema.safeParse({
+        id: 'prod-123'
+      });
+      expect(result.success).toBe(false);
+    });
+  });
+
+  describe('transferProductSchema', () => {
+    it('should validate a correct transfer request', () => {
+      const result = transferProductSchema.safeParse({
+        productId: 'PROD-001',
+        recipientAddress: 'GBRPYHIL2CI3FN7YZXRLS62W3N5H3NVBUNNV3DPH3TSRY3OTYJ75SNCJ',
+      });
+      expect(result.success).toBe(true);
+    });
+
+    it('should reject a missing recipient address', () => {
+      const result = transferProductSchema.safeParse({ productId: 'PROD-001' });
+      expect(result.success).toBe(false);
+    });
+
+    it('should reject an invalid recipient Stellar address', () => {
+      const result = transferProductSchema.safeParse({
+        productId: 'PROD-001',
+        recipientAddress: 'not-a-stellar-key',
+      });
+      expect(result.success).toBe(false);
+    });
+  });
+
+  describe('productSearchSchema', () => {
+    it('should validate a normal search query', () => {
+      const result = productSearchSchema.safeParse({ query: 'laptop' });
+      expect(result.success).toBe(true);
+    });
+
+    it('should reject an empty search query', () => {
+      const result = productSearchSchema.safeParse({ query: '' });
+      expect(result.success).toBe(false);
+    });
+
+    it('should reject a query with dangerous characters', () => {
+      const result = productSearchSchema.safeParse({ query: '<script>alert(1)</script>' });
+      expect(result.success).toBe(false);
+    });
+  });
+});
diff --git a/frontend/lib/validation/schemas.ts b/frontend/lib/validation/schemas.ts
new file mode 100644
index 00000000..4df893f5
--- /dev/null
+++ b/frontend/lib/validation/schemas.ts
@@ -0,0 +1,117 @@
+import { StrKey } from "@stellar/stellar-sdk";
+import { z } from "zod";
+
+import { VALIDATION_MESSAGES } from "./messages";
+
+export const PRODUCT_ID_MIN_LEN = 1;
+export const PRODUCT_ID_MAX_LEN = 64;
+
+export const productIdSchema = z
+  .string()
+  .min(PRODUCT_ID_MIN_LEN, VALIDATION_MESSAGES.productIdLength(PRODUCT_ID_MIN_LEN, PRODUCT_ID_MAX_LEN))
+  .max(PRODUCT_ID_MAX_LEN, VALIDATION_MESSAGES.productIdLength(PRODUCT_ID_MIN_LEN, PRODUCT_ID_MAX_LEN))
+  .regex(/^[a-zA-Z0-9-_]+$/, VALIDATION_MESSAGES.productIdInvalid);
+
+export const stellarPublicKeySchema = z
+  .string()
+  .min(1, VALIDATION_MESSAGES.required("Address"))
+  .refine((value) => StrKey.isValidEd25519PublicKey(value), {
+    message: VALIDATION_MESSAGES.stellarAddressInvalid,
+  });
+
+export function requiredString(fieldLabel: string) {
+  return z.string().min(1, VALIDATION_MESSAGES.required(fieldLabel));
+}
+
+export function optionalStringMax(maxLen: number) {
+  return z.string().max(maxLen).optional();
+}
+
+export function withCustomRule<T>(schema: z.ZodType<T>, predicate: (value: T) => boolean, message: string) {
+  return schema.refine(predicate, { message });
+}
+
+export const LOCATION_REGEX = /^[\w\s,.\-']+$/;
+
+export const productRegistrationSchema = z.object({
+  id: productIdSchema,
+  name: requiredString("Name").max(128, VALIDATION_MESSAGES.maxLength("Name", 128)),
+  origin: requiredString("Origin")
+    .max(256, VALIDATION_MESSAGES.maxLength("Origin", 256))
+    .regex(LOCATION_REGEX, "Origin contains invalid characters"),
+  description: z.string().max(2048, VALIDATION_MESSAGES.maxLength("Description", 2048)).optional(),
+  category: requiredString("Category").max(64, VALIDATION_MESSAGES.maxLength("Category", 64)),
+});
+
+export type ProductRegistrationValues = z.infer<typeof productRegistrationSchema>;
+
+export const ALLOWED_EVENT_TYPES = [
+  "HARVEST",
+  "PROCESS",
+  "PACKAGE",
+  "SHIP",
+  "RECEIVE",
+  "QUALITY_CHECK",
+  "TRANSFER",
+  "REGISTER",
+  "CHECKPOINT",
+] as const;
+
+export type AllowedEventType = (typeof ALLOWED_EVENT_TYPES)[number];
+
+export const EVENT_NOTE_MAX_LEN = 256;
+
+export const eventTypeSchema = z
+  .string()
+  .min(1, VALIDATION_MESSAGES.required("Event type"))
+  .refine((value): value is AllowedEventType => ALLOWED_EVENT_TYPES.includes(value as AllowedEventType), {
+    message: VALIDATION_MESSAGES.eventTypeInvalid,
+  });
+
+export const eventTimestampSchema = z
+  .number()
+  .refine((value) => value <= Date.now(), {
+    message: VALIDATION_MESSAGES.timestampFuture,
+  });
+
+export const eventTrackingSchema = z.object({
+  productId: productIdSchema,
+  eventType: eventTypeSchema,
+  location: requiredString("Location")
+    .max(256, VALIDATION_MESSAGES.maxLength("Location", 256))
+    .regex(LOCATION_REGEX, "Location contains invalid characters"),
+  note: z.string().max(EVENT_NOTE_MAX_LEN, VALIDATION_MESSAGES.maxLength("Note", EVENT_NOTE_MAX_LEN)).optional(),
+  timestamp: eventTimestampSchema.optional(),
+});
+
+export type EventTrackingValues = z.infer<typeof eventTrackingSchema>;
+
+// ─── Transfer Product Schema ──────────────────────────────────────────────────
+
+export const transferProductSchema = z.object({
+  productId: productIdSchema,
+  recipientAddress: stellarPublicKeySchema,
+});
+
+export type TransferProductValues = z.infer<typeof transferProductSchema>;
+
+// ─── Product Search Schema ────────────────────────────────────────────────────
+
+export const PRODUCT_SEARCH_MIN_LEN = 1;
+export const PRODUCT_SEARCH_MAX_LEN = 128;
+
+export const productSearchSchema = z.object({
+  query: z
+    .string()
+    .min(PRODUCT_SEARCH_MIN_LEN, VALIDATION_MESSAGES.required("Search query"))
+    .max(
+      PRODUCT_SEARCH_MAX_LEN,
+      VALIDATION_MESSAGES.maxLength("Search query", PRODUCT_SEARCH_MAX_LEN)
+    )
+    .regex(
+      /^[a-zA-Z0-9 \-_.,]+$/,
+      "Search query contains invalid characters"
+    ),
+});
+
+export type ProductSearchValues = z.infer<typeof productSearchSchema>;
diff --git a/frontend/lib/websocket/client.ts b/frontend/lib/websocket/client.ts
new file mode 100644
index 00000000..cdf2227a
--- /dev/null
+++ b/frontend/lib/websocket/client.ts
@@ -0,0 +1,129 @@
+export type MessageHandler = (message: Record<string, unknown>) => void;
+
+export class WebSocketClient {
+    private ws: WebSocket | null = null;
+    private url: string;
+    private reconnectAttempts = 0;
+    private maxReconnectAttempts = 5;
+    private reconnectDelay = 3000;
+    private messageHandlers: Map<string, Set<MessageHandler>> = new Map();
+    private connectionPromise: Promise<void> | null = null;
+
+    constructor(url: string) {
+        this.url = url;
+    }
+
+    async connect(): Promise<void> {
+        if (this.connectionPromise) {
+            return this.connectionPromise;
+        }
+
+        this.connectionPromise = new Promise((resolve, reject) => {
+            try {
+                this.ws = new WebSocket(this.url);
+
+                this.ws.onopen = () => {
+                    console.log('WebSocket connected');
+                    this.reconnectAttempts = 0;
+                    resolve();
+                };
+
+                this.ws.onmessage = (event) => {
+                    try {
+                        const message = JSON.parse(event.data);
+                        this.handleMessage(message);
+                    } catch (error) {
+                        console.error('Failed to parse WebSocket message:', error);
+                    }
+                };
+
+                this.ws.onerror = (error) => {
+                    console.error('WebSocket error:', error);
+                    reject(error);
+                };
+
+                this.ws.onclose = () => {
+                    console.log('WebSocket disconnected');
+                    this.connectionPromise = null;
+                    this.attemptReconnect();
+                };
+            } catch (error) {
+                reject(error);
+            }
+        });
+
+        return this.connectionPromise;
+    }
+
+    private attemptReconnect(): void {
+        if (this.reconnectAttempts < this.maxReconnectAttempts) {
+            this.reconnectAttempts++;
+            console.log(`Attempting to reconnect (${this.reconnectAttempts}/${this.maxReconnectAttempts})...`);
+            setTimeout(() => {
+                this.connectionPromise = null;
+                this.connect().catch(console.error);
+            }, this.reconnectDelay);
+        }
+    }
+
+    private handleMessage(message: Record<string, unknown>): void {
+        const { type, channel, data } = message;
+
+        if (type === 'event' && typeof channel === 'string') {
+            const handlers = this.messageHandlers.get(channel);
+            if (handlers) {
+                handlers.forEach((handler) => handler(data as Record<string, unknown>));
+            }
+        }
+    }
+
+    subscribe(channel: string, handler: MessageHandler): void {
+        if (!this.messageHandlers.has(channel)) {
+            this.messageHandlers.set(channel, new Set());
+        }
+        this.messageHandlers.get(channel)!.add(handler);
+
+        if (this.ws && this.ws.readyState === WebSocket.OPEN) {
+            this.send({
+                type: 'subscribe',
+                channel,
+            });
+        }
+    }
+
+    unsubscribe(channel: string, handler?: MessageHandler): void {
+        if (handler) {
+            this.messageHandlers.get(channel)?.delete(handler);
+        } else {
+            this.messageHandlers.delete(channel);
+        }
+
+        if (this.ws && this.ws.readyState === WebSocket.OPEN) {
+            this.send({
+                type: 'unsubscribe',
+                channel,
+            });
+        }
+    }
+
+    send(message: Record<string, unknown>): void {
+        if (this.ws && this.ws.readyState === WebSocket.OPEN) {
+            this.ws.send(JSON.stringify(message));
+        } else {
+            console.warn('WebSocket is not connected');
+        }
+    }
+
+    disconnect(): void {
+        if (this.ws) {
+            this.ws.close();
+            this.ws = null;
+        }
+        this.connectionPromise = null;
+        this.messageHandlers.clear();
+    }
+
+    isConnected(): boolean {
+        return this.ws !== null && this.ws.readyState === WebSocket.OPEN;
+    }
+}
diff --git a/frontend/locales/ar.json b/frontend/locales/ar.json
new file mode 100644
index 00000000..08f2c43e
--- /dev/null
+++ b/frontend/locales/ar.json
@@ -0,0 +1,50 @@
+{
+  "language": "اللغة",
+  "products": "المنتجات",
+  "search": "بحث",
+  "connect_wallet": "ربط المحفظة",
+  "disconnect": "قطع الاتصال",
+  "welcome": "مرحباً",
+  "status": "الحالة",
+  "date": "التاريخ",
+  "owner": "المالك",
+  "category": "الفئة",
+
+  "skip_to_main": "انتقل إلى المحتوى الرئيسي",
+
+  "dashboard_title": "لوحة التحكم",
+  "dashboard_subtitle": "تحليلات سلسلة التوريد لمنتجاتك المسجلة.",
+  "refresh": "تحديث",
+
+  "connect_your_wallet": "قم بربط محفظتك",
+  "connect_wallet_to_load": "اربط محفظة لتحميل المنتجات والأحداث للتحليلات.",
+
+  "events_unavailable": "الأحداث غير متاحة",
+  "contract_not_configured_warning": "العقد غير مُعد. ستعرض لوحة التحكم بيانات المنتجات فقط.",
+  "events_load_warning": "تعذر تحميل أحداث التتبع. ستعرض لوحة التحكم بيانات المنتجات فقط.",
+  "failed_to_load_dashboard": "تعذر تحميل لوحة التحكم",
+  "contract_not_configured_error": "العقد غير مُعد. أضف NEXT_PUBLIC_CONTRACT_ID ثم أعد التحميل.",
+  "unable_to_load_dashboard": "تعذر تحميل بيانات لوحة التحكم. تحقق من الاتصال ثم حاول مرة أخرى.",
+  "retry": "إعادة المحاولة",
+  "auto_refreshes": "يتم التحديث تلقائياً عندما تكون علامة التبويب مرئية.",
+
+  "total_products": "إجمالي المنتجات",
+  "total_events": "إجمالي الأحداث",
+  "top_origin": "أهم منشأ",
+  "last_updated": "آخر تحديث",
+
+  "products_visible_to_wallet": "المنتجات الظاهرة حالياً لمحفظتك.",
+  "all_loaded_events": "جميع أحداث التتبع المحمّلة.",
+
+  "no_products_yet": "لا توجد منتجات بعد.",
+
+  "activity_over_time": "النشاط عبر الزمن",
+  "events_grouped_by_day": "الأحداث مُجمّعة حسب اليوم.",
+  "no_activity_yet": "لا يوجد نشاط بعد.",
+
+  "top_origins": "أهم المناشئ",
+  "most_common_origins": "أكثر مناشئ المنتجات شيوعاً.",
+
+  "products_count_one": "{{count}} منتج",
+  "products_count_other": "{{count}} منتجات"
+}
diff --git a/frontend/locales/en.json b/frontend/locales/en.json
new file mode 100644
index 00000000..f741f570
--- /dev/null
+++ b/frontend/locales/en.json
@@ -0,0 +1,50 @@
+{
+  "language": "Language",
+  "products": "Products",
+  "search": "Search",
+  "connect_wallet": "Connect Wallet",
+  "disconnect": "Disconnect",
+  "welcome": "Welcome",
+  "status": "Status",
+  "date": "Date",
+  "owner": "Owner",
+  "category": "Category",
+
+  "skip_to_main": "Skip to main content",
+
+  "dashboard_title": "Dashboard",
+  "dashboard_subtitle": "Supply chain analytics for your registered products.",
+  "refresh": "Refresh",
+
+  "connect_your_wallet": "Connect your wallet",
+  "connect_wallet_to_load": "Connect a wallet to load products and events for analytics.",
+
+  "events_unavailable": "Events unavailable",
+  "contract_not_configured_warning": "Contract is not configured. Dashboard will show product-only insights.",
+  "events_load_warning": "We couldn't load tracking events. Dashboard will show product-only insights.",
+  "failed_to_load_dashboard": "Failed to load dashboard",
+  "contract_not_configured_error": "Contract is not configured. Add NEXT_PUBLIC_CONTRACT_ID and reload.",
+  "unable_to_load_dashboard": "Unable to load dashboard data. Please check your connection and try again.",
+  "retry": "Retry",
+  "auto_refreshes": "Auto-refreshes while tab is visible.",
+
+  "total_products": "Total products",
+  "total_events": "Total events",
+  "top_origin": "Top origin",
+  "last_updated": "Last updated",
+
+  "products_visible_to_wallet": "Products currently visible to your wallet.",
+  "all_loaded_events": "All loaded tracking events.",
+
+  "no_products_yet": "No products yet.",
+
+  "activity_over_time": "Activity over time",
+  "events_grouped_by_day": "Events grouped by day.",
+  "no_activity_yet": "No activity yet.",
+
+  "top_origins": "Top origins",
+  "most_common_origins": "Most common product origins.",
+
+  "products_count_one": "{{count}} product",
+  "products_count_other": "{{count}} products"
+}
diff --git a/frontend/locales/es.json b/frontend/locales/es.json
new file mode 100644
index 00000000..af4322e7
--- /dev/null
+++ b/frontend/locales/es.json
@@ -0,0 +1,50 @@
+{
+  "language": "Idioma",
+  "products": "Productos",
+  "search": "Buscar",
+  "connect_wallet": "Conectar Billetera",
+  "disconnect": "Desconectar",
+  "welcome": "Bienvenido",
+  "status": "Estado",
+  "date": "Fecha",
+  "owner": "Propietario",
+  "category": "Categoría",
+
+  "skip_to_main": "Saltar al contenido principal",
+
+  "dashboard_title": "Panel",
+  "dashboard_subtitle": "Analíticas de la cadena de suministro para tus productos registrados.",
+  "refresh": "Actualizar",
+
+  "connect_your_wallet": "Conecta tu billetera",
+  "connect_wallet_to_load": "Conecta una billetera para cargar productos y eventos para análisis.",
+
+  "events_unavailable": "Eventos no disponibles",
+  "contract_not_configured_warning": "El contrato no está configurado. El panel mostrará solo información de productos.",
+  "events_load_warning": "No pudimos cargar los eventos de seguimiento. El panel mostrará solo información de productos.",
+  "failed_to_load_dashboard": "No se pudo cargar el panel",
+  "contract_not_configured_error": "El contrato no está configurado. Agrega NEXT_PUBLIC_CONTRACT_ID y recarga.",
+  "unable_to_load_dashboard": "No se pudieron cargar los datos del panel. Verifica tu conexión e inténtalo de nuevo.",
+  "retry": "Reintentar",
+  "auto_refreshes": "Se actualiza automáticamente mientras la pestaña está visible.",
+
+  "total_products": "Productos totales",
+  "total_events": "Eventos totales",
+  "top_origin": "Origen principal",
+  "last_updated": "Última actualización",
+
+  "products_visible_to_wallet": "Productos visibles actualmente para tu billetera.",
+  "all_loaded_events": "Todos los eventos de seguimiento cargados.",
+
+  "no_products_yet": "Aún no hay productos.",
+
+  "activity_over_time": "Actividad a lo largo del tiempo",
+  "events_grouped_by_day": "Eventos agrupados por día.",
+  "no_activity_yet": "Aún no hay actividad.",
+
+  "top_origins": "Orígenes principales",
+  "most_common_origins": "Orígenes de productos más comunes.",
+
+  "products_count_one": "{{count}} producto",
+  "products_count_other": "{{count}} productos"
+}
diff --git a/frontend/locales/fr.json b/frontend/locales/fr.json
new file mode 100644
index 00000000..24cd0305
--- /dev/null
+++ b/frontend/locales/fr.json
@@ -0,0 +1,50 @@
+{
+  "language": "Langue",
+  "products": "Produits",
+  "search": "Rechercher",
+  "connect_wallet": "Connecter le portefeuille",
+  "disconnect": "Déconnecter",
+  "welcome": "Bienvenue",
+  "status": "Statut",
+  "date": "Date",
+  "owner": "Propriétaire",
+  "category": "Catégorie",
+
+  "skip_to_main": "Aller au contenu principal",
+
+  "dashboard_title": "Tableau de bord",
+  "dashboard_subtitle": "Analyses de la chaîne d'approvisionnement pour vos produits enregistrés.",
+  "refresh": "Actualiser",
+
+  "connect_your_wallet": "Connectez votre portefeuille",
+  "connect_wallet_to_load": "Connectez un portefeuille pour charger les produits et les événements pour l'analyse.",
+
+  "events_unavailable": "Événements indisponibles",
+  "contract_not_configured_warning": "Le contrat n'est pas configuré. Le tableau de bord affichera uniquement des informations sur les produits.",
+  "events_load_warning": "Nous n'avons pas pu charger les événements de suivi. Le tableau de bord affichera uniquement des informations sur les produits.",
+  "failed_to_load_dashboard": "Échec du chargement du tableau de bord",
+  "contract_not_configured_error": "Le contrat n'est pas configuré. Ajoutez NEXT_PUBLIC_CONTRACT_ID et rechargez.",
+  "unable_to_load_dashboard": "Impossible de charger les données du tableau de bord. Vérifiez votre connexion et réessayez.",
+  "retry": "Réessayer",
+  "auto_refreshes": "Actualisation automatique lorsque l'onglet est visible.",
+
+  "total_products": "Produits au total",
+  "total_events": "Événements au total",
+  "top_origin": "Origine principale",
+  "last_updated": "Dernière mise à jour",
+
+  "products_visible_to_wallet": "Produits actuellement visibles pour votre portefeuille.",
+  "all_loaded_events": "Tous les événements de suivi chargés.",
+
+  "no_products_yet": "Aucun produit pour le moment.",
+
+  "activity_over_time": "Activité dans le temps",
+  "events_grouped_by_day": "Événements regroupés par jour.",
+  "no_activity_yet": "Aucune activité pour le moment.",
+
+  "top_origins": "Principales origines",
+  "most_common_origins": "Origines de produits les plus courantes.",
+
+  "products_count_one": "{{count}} produit",
+  "products_count_other": "{{count}} produits"
+}
diff --git a/frontend/next.config.ts b/frontend/next.config.ts
new file mode 100644
index 00000000..a55e3088
--- /dev/null
+++ b/frontend/next.config.ts
@@ -0,0 +1,65 @@
+import type { NextConfig } from "next";
+
+const ContentSecurityPolicy = `
+  default-src 'self';
+  script-src 'self' 'unsafe-inline' 'unsafe-eval';
+  style-src 'self' 'unsafe-inline';
+  img-src 'self' data: blob:;
+  font-src 'self';
+  connect-src 'self' https://soroban-testnet.stellar.org https://soroban-rpc.mainnet.stellar.org https://rpc-futurenet.stellar.org;
+  frame-ancestors 'none';
+  base-uri 'self';
+  form-action 'self';
+`.replace(/\s{2,}/g, " ").trim();
+
+const securityHeaders = [
+  {
+    key: "Content-Security-Policy",
+    value: ContentSecurityPolicy,
+  },
+  {
+    key: "X-Content-Type-Options",
+    value: "nosniff",
+  },
+  {
+    key: "X-Frame-Options",
+    value: "DENY",
+  },
+  {
+    key: "X-XSS-Protection",
+    value: "1; mode=block",
+  },
+  {
+    key: "Referrer-Policy",
+    value: "strict-origin-when-cross-origin",
+  },
+  {
+    key: "Permissions-Policy",
+    value: "camera=(), microphone=(), geolocation=()",
+  },
+];
+
+const nextConfig: NextConfig = {
+  images: {
+    formats: ["image/avif", "image/webp"],
+    remotePatterns: [
+      {
+        protocol: "https",
+        hostname: "**",
+      },
+    ],
+    minimumCacheTTL: 60,
+    dangerouslyAllowSVG: true,
+    contentSecurityPolicy: "default-src 'self'; script-src 'none'; sandbox;",
+  },
+  async headers() {
+    return [
+      {
+        source: "/(.*)",
+        headers: securityHeaders,
+      },
+    ];
+  },
+};
+
+export default nextConfig;
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
new file mode 100644
index 00000000..1ff5c0ff
--- /dev/null
+++ b/frontend/package-lock.json
@@ -0,0 +1,10467 @@
+{
+  "name": "frontend",
+  "version": "0.1.1",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "frontend",
+      "version": "0.1.1",
+      "dependencies": {
+        "@hookform/resolvers": "^5.4.0",
+        "@radix-ui/react-dialog": "^1.1.16",
+        "@radix-ui/react-select": "^2.3.0",
+        "@radix-ui/react-slot": "^1.2.4",
+        "@stellar/freighter-api": "^6.0.1",
+        "@stellar/stellar-sdk": "^14.5.0",
+        "class-variance-authority": "^0.7.1",
+        "clsx": "^2.1.1",
+        "html5-qrcode": "^2.3.8",
+        "i18next": "^26.3.1",
+        "lucide-react": "^1.17.0",
+        "next": "16.2.7",
+        "next-themes": "^0.4.6",
+        "qrcode": "^1.5.4",
+        "react": "19.2.7",
+        "react-dom": "19.2.7",
+        "react-hook-form": "^7.78.0",
+        "react-i18next": "^17.0.8",
+        "recharts": "^3.7.0",
+        "sonner": "^2.0.7",
+        "tailwind-merge": "^3.6.0",
+        "tailwindcss-animate": "^1.0.7",
+        "web-vitals": "^5.3.0",
+        "zod": "^4.4.3",
+        "zustand": "^5.0.14"
+      },
+      "devDependencies": {
+        "@playwright/test": "^1.60.0",
+        "@tailwindcss/postcss": "^4.3.0",
+        "@testing-library/jest-dom": "^6.1.4",
+        "@testing-library/react": "^16.0.0",
+        "@testing-library/user-event": "^14.5.1",
+        "@types/node": "^25",
+        "@types/qrcode": "^1.5.6",
+        "@types/react": "^19",
+        "@types/react-dom": "^19",
+        "@vitest/coverage-v8": "^4.1.8",
+        "@vitest/ui": "^4.1.8",
+        "eslint": "^10",
+        "eslint-config-next": "16.2.7",
+        "gh-pages": "^6.3.0",
+        "jsdom": "^29.1.1",
+        "lightningcss": "^1.32.0",
+        "typescript": "^6",
+        "vite-tsconfig-paths": "^6.1.1",
+        "vitest": "^4.1.8",
+        "vitest-axe": "^0.1.0"
+      }
+    },
+    "node_modules/@adobe/css-tools": {
+      "version": "4.4.4",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@alloc/quick-lru": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@alloc/quick-lru/-/quick-lru-5.2.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/@asamuzakjp/css-color": {
+      "version": "5.1.11",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-5.1.11.tgz",
+      "integrity": "sha512-KVw6qIiCTUQhByfTd78h2yD1/00waTmm9uy/R7Ck/ctUyAPj+AEDLkQIdJW0T8+qGgj3j5bpNKK7Q3G+LedJWg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@asamuzakjp/generational-cache": "^1.0.1",
+        "@csstools/css-calc": "^3.2.0",
+        "@csstools/css-color-parser": "^4.1.0",
+        "@csstools/css-parser-algorithms": "^4.0.0",
+        "@csstools/css-tokenizer": "^4.0.0"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
+      }
+    },
+    "node_modules/@asamuzakjp/dom-selector": {
+      "version": "7.1.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-7.1.1.tgz",
+      "integrity": "sha512-67RZDnYRc8H/8MLDgQCDE//zoqVFwajkepHZgmXrbwybzXOEwOWGPYGmALYl9J2DOLfFPPs6kKCqmbzV895hTQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@asamuzakjp/generational-cache": "^1.0.1",
+        "@asamuzakjp/nwsapi": "^2.3.9",
+        "bidi-js": "^1.0.3",
+        "css-tree": "^3.2.1",
+        "is-potential-custom-element-name": "^1.0.1"
+      },
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
+      }
+    },
+    "node_modules/@asamuzakjp/generational-cache": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/generational-cache/-/generational-cache-1.0.1.tgz",
+      "integrity": "sha512-wajfB8KqzMCN2KGNFdLkReeHncd0AslUSrvHVvvYWuU8ghncRJoA50kT3zP9MVL0+9g4/67H+cdvBskj9THPzg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^20.19.0 || ^22.12.0 || >=24.0.0"
+      }
+    },
+    "node_modules/@asamuzakjp/nwsapi": {
+      "version": "2.3.9",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/nwsapi/-/nwsapi-2.3.9.tgz",
+      "integrity": "sha512-n8GuYSrI9bF7FFZ/SjhwevlHc8xaVlb/7HmHelnc/PZXBD2ZR49NnN9sMMuDdEGPeeRQ5d0hqlSlEpgCX3Wl0Q==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/@babel/code-frame": {
+      "version": "7.29.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-validator-identifier": "^7.28.5",
+        "js-tokens": "^4.0.0",
+        "picocolors": "^1.1.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/compat-data": {
+      "version": "7.29.3",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/core": {
+      "version": "7.29.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.29.0",
+        "@babel/generator": "^7.29.0",
+        "@babel/helper-compilation-targets": "^7.28.6",
+        "@babel/helper-module-transforms": "^7.28.6",
+        "@babel/helpers": "^7.28.6",
+        "@babel/parser": "^7.29.0",
+        "@babel/template": "^7.28.6",
+        "@babel/traverse": "^7.29.0",
+        "@babel/types": "^7.29.0",
+        "@jridgewell/remapping": "^2.3.5",
+        "convert-source-map": "^2.0.0",
+        "debug": "^4.1.0",
+        "gensync": "^1.0.0-beta.2",
+        "json5": "^2.2.3",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/babel"
+      }
+    },
+    "node_modules/@babel/core/node_modules/semver": {
+      "version": "6.3.1",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      }
+    },
+    "node_modules/@babel/generator": {
+      "version": "7.29.1",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/parser": "^7.29.0",
+        "@babel/types": "^7.29.0",
+        "@jridgewell/gen-mapping": "^0.3.12",
+        "@jridgewell/trace-mapping": "^0.3.28",
+        "jsesc": "^3.0.2"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-compilation-targets": {
+      "version": "7.28.6",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/compat-data": "^7.28.6",
+        "@babel/helper-validator-option": "^7.27.1",
+        "browserslist": "^4.24.0",
+        "lru-cache": "^5.1.1",
+        "semver": "^6.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-compilation-targets/node_modules/semver": {
+      "version": "6.3.1",
+      "dev": true,
+      "license": "ISC",
+      "bin": {
+        "semver": "bin/semver.js"
+      }
+    },
+    "node_modules/@babel/helper-globals": {
+      "version": "7.28.0",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-module-imports": {
+      "version": "7.28.6",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/traverse": "^7.28.6",
+        "@babel/types": "^7.28.6"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-module-transforms": {
+      "version": "7.28.6",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-module-imports": "^7.28.6",
+        "@babel/helper-validator-identifier": "^7.28.5",
+        "@babel/traverse": "^7.28.6"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      },
+      "peerDependencies": {
+        "@babel/core": "^7.0.0"
+      }
+    },
+    "node_modules/@babel/helper-string-parser": {
+      "version": "7.27.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-identifier": {
+      "version": "7.28.5",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helper-validator-option": {
+      "version": "7.27.1",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/helpers": {
+      "version": "7.29.2",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/template": "^7.28.6",
+        "@babel/types": "^7.29.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/parser": {
+      "version": "7.29.3",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/types": "^7.29.0"
+      },
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
+      "engines": {
+        "node": ">=6.0.0"
+      }
+    },
+    "node_modules/@babel/runtime": {
+      "version": "7.29.2",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/template": {
+      "version": "7.28.6",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.28.6",
+        "@babel/parser": "^7.28.6",
+        "@babel/types": "^7.28.6"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/traverse": {
+      "version": "7.29.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/code-frame": "^7.29.0",
+        "@babel/generator": "^7.29.0",
+        "@babel/helper-globals": "^7.28.0",
+        "@babel/parser": "^7.29.0",
+        "@babel/template": "^7.28.6",
+        "@babel/types": "^7.29.0",
+        "debug": "^4.3.1"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@babel/types": {
+      "version": "7.29.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/helper-string-parser": "^7.27.1",
+        "@babel/helper-validator-identifier": "^7.28.5"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@bcoe/v8-coverage": {
+      "version": "1.0.2",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@bramus/specificity": {
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diff --git a/frontend/package.json b/frontend/package.json
new file mode 100644
index 00000000..fba008c4
--- /dev/null
+++ b/frontend/package.json
@@ -0,0 +1,75 @@
+{
+  "name": "frontend",
+  "version": "0.1.1",
+  "private": true,
+  "scripts": {
+    "dev": "next dev",
+    "build": "next build",
+    "start": "next start",
+    "lint": "eslint",
+    "test": "vitest run",
+    "e2e": "playwright test",
+    "e2e:ui": "playwright test --ui",
+    "e2e:report": "playwright show-report"
+  },
+  "dependencies": {
+    "@hookform/resolvers": "^5.4.0",
+    "@radix-ui/react-dialog": "^1.1.16",
+    "@radix-ui/react-select": "^2.3.0",
+    "@radix-ui/react-slot": "^1.2.4",
+    "@stellar/freighter-api": "^6.0.1",
+    "@stellar/stellar-sdk": "^14.5.0",
+    "class-variance-authority": "^0.7.1",
+    "clsx": "^2.1.1",
+    "html5-qrcode": "^2.3.8",
+    "i18next": "^26.3.1",
+    "lucide-react": "^1.17.0",
+    "next": "16.2.7",
+    "next-themes": "^0.4.6",
+    "qrcode": "^1.5.4",
+    "react": "19.2.7",
+    "react-dom": "19.2.7",
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+    "@tailwindcss/postcss": "^4.3.0",
+    "@testing-library/jest-dom": "^6.1.4",
+    "@testing-library/react": "^16.0.0",
+    "@testing-library/user-event": "^14.5.1",
+    "@types/node": "^25",
+    "@types/qrcode": "^1.5.6",
+    "@types/react": "^19",
+    "@types/react-dom": "^19",
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+    "eslint": "^10",
+    "eslint-config-next": "16.2.7",
+    "gh-pages": "^6.3.0",
+    "jsdom": "^29.1.1",
+    "lightningcss": "^1.32.0",
+    "typescript": "^6",
+    "vite-tsconfig-paths": "^6.1.1",
+    "vitest": "^4.1.8",
+    "vitest-axe": "^0.1.0"
+  },
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+    "axios": "^1.7.9",
+    "brace-expansion": "^2.0.1",
+    "flatted": "^3.2.9",
+    "follow-redirects": "^1.15.6",
+    "lodash-es": "^4.17.21",
+    "picomatch": "^4.0.2",
+    "postcss": "^8.5.10",
+    "vite": "^7.3.2",
+    "rollup": "^4.20.0"
+  }
+}
diff --git a/frontend/playwright-report/index.html b/frontend/playwright-report/index.html
new file mode 100644
index 00000000..86544c5b
--- /dev/null
+++ b/frontend/playwright-report/index.html
@@ -0,0 +1,85 @@
+
+
+<!DOCTYPE html>
+<html style='scrollbar-gutter: stable both-edges;'>
+  <head>
+    <meta charset='UTF-8'>
+    <meta name='color-scheme' content='dark light'>
+    <meta name='viewport' content='width=device-width, initial-scale=1.0'>
+    <title>Playwright Test Report</title>
+    <script type="module">var NA=Object.defineProperty;var BA=(l,u,c)=>u in l?NA(l,u,{enumerable:!0,configurable:!0,writable:!0,value:c}):l[u]=c;var yn=(l,u,c)=>BA(l,typeof u!="symbol"?u+"":u,c);(function(){const u=document.createElement("link").relList;if(u&&u.supports&&u.supports("modulepreload"))return;for(const r of document.querySelectorAll('link[rel="modulepreload"]'))f(r);new MutationObserver(r=>{for(const o of r)if(o.type==="childList")for(const h of o.addedNodes)h.tagName==="LINK"&&h.rel==="modulepreload"&&f(h)}).observe(document,{childList:!0,subtree:!0});function c(r){const o={};return r.integrity&&(o.integrity=r.integrity),r.referrerPolicy&&(o.referrerPolicy=r.referrerPolicy),r.crossOrigin==="use-credentials"?o.credentials="include":r.crossOrigin==="anonymous"?o.credentials="omit":o.credentials="same-origin",o}function f(r){if(r.ep)return;r.ep=!0;const o=c(r);fetch(r.href,o)}})();function UA(l){return l&&l.__esModule&&Object.prototype.hasOwnProperty.call(l,"default")?l.default:l}var Mf={exports:{}},Ei={};/**
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+ * react-jsx-runtime.production.js
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */var D1;function QA(){if(D1)return Ei;D1=1;var l=Symbol.for("react.transitional.element"),u=Symbol.for("react.fragment");function c(f,r,o){var h=null;if(o!==void 0&&(h=""+o),r.key!==void 0&&(h=""+r.key),"key"in r){o={};for(var v in r)v!=="key"&&(o[v]=r[v])}else o=r;return r=o.ref,{$$typeof:l,type:f,key:h,ref:r!==void 0?r:null,props:o}}return Ei.Fragment=u,Ei.jsx=c,Ei.jsxs=c,Ei}var M1;function zA(){return M1||(M1=1,Mf.exports=QA()),Mf.exports}var m=zA();const 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Wf(){const l=this;let u,c,f,r,o,h;function v(A,E,S,O,X,B,b,p,x,R,U){let Z,F,j,D,N,K,J,k,nt,P,st,it,H,_,$;P=0,N=S;do f[A[E+P]]++,P++,N--;while(N!==0);if(f[0]==S)return b[0]=-1,p[0]=0,xt;for(k=p[0],K=1;K<=ta&&f[K]===0;K++);for(J=K,k<K&&(k=K),N=ta;N!==0&&f[N]===0;N--);for(j=N,k>N&&(k=N),p[0]=k,_=1<<K;K<N;K++,_<<=1)if((_-=f[K])<0)return Ut;if((_-=f[N])<0)return Ut;for(f[N]+=_,h[1]=K=0,P=1,H=2;--N!==0;)h[H]=K+=f[P],H++,P++;N=0,P=0;do(K=A[E+P])!==0&&(U[h[K]++]=N),P++;while(++N<S);for(S=h[j],h[0]=N=0,P=0,D=-1,it=-k,o[0]=0,st=0,$=0;J<=j;J++)for(Z=f[J];Z--!==0;){for(;J>it+k;){if(D++,it+=k,$=j-it,$=$>k?k:$,(F=1<<(K=J-it))>Z+1&&(F-=Z+1,H=J,K<$))for(;++K<$&&!((F<<=1)<=f[++H]);)F-=f[H];if($=1<<K,R[0]+$>L2)return Ut;o[D]=st=R[0],R[0]+=$,D!==0?(h[D]=N,r[0]=K,r[1]=k,K=N>>>it-k,r[2]=st-o[D-1]-K,x.set(r,(o[D-1]+K)*3)):b[0]=st}for(r[1]=J-it,P>=S?r[0]=192:U[P]<O?(r[0]=U[P]<256?0:96,r[2]=U[P++]):(r[0]=B[U[P]-O]+16+64,r[2]=X[U[P++]-O]),F=1<<J-it,K=N>>>it;K<$;K+=F)x.set(r,(st+K)*3);for(K=1<<J-1;(N&K)!==0;K>>>=1)N^=K;for(N^=K,nt=(1<<it)-1;(N&nt)!=h[D];)D--,it-=k,nt=(1<<it)-1}return _!==0&&j!=1?xn:xt}function y(A){let E;for(u||(u=[],c=[],f=new Int32Array(ta+1),r=[],o=new Int32Array(ta),h=new Int32Array(ta+1)),c.length<A&&(c=[]),E=0;E<A;E++)c[E]=0;for(E=0;E<ta+1;E++)f[E]=0;for(E=0;E<3;E++)r[E]=0;o.set(f.subarray(0,ta),0),h.set(f.subarray(0,ta+1),0)}l.inflate_trees_bits=function(A,E,S,O,X){let B;return y(19),u[0]=0,B=v(A,0,19,19,null,null,S,E,O,u,c),B==Ut?X.msg="oversubscribed dynamic bit lengths tree":(B==xn||E[0]===0)&&(X.msg="incomplete dynamic bit lengths tree",B=Ut),B},l.inflate_trees_dynamic=function(A,E,S,O,X,B,b,p,x){let R;return y(288),u[0]=0,R=v(S,0,A,257,KA,kA,B,O,p,u,c),R!=xt||O[0]===0?(R==Ut?x.msg="oversubscribed literal/length tree":R!=j1&&(x.msg="incomplete literal/length tree",R=Ut),R):(y(288),R=v(S,A,E,0,JA,FA,b,X,p,u,c),R!=xt||X[0]===0&&A>257?(R==Ut?x.msg="oversubscribed distance tree":R==xn?(x.msg="incomplete distance tree",R=Ut):R!=j1&&(x.msg="empty distance tree with lengths",R=Ut),R):xt)}}Wf.inflate_trees_fixed=function(l,u,c,f){return l[0]=VA,u[0]=ZA,c[0]=qA,f[0]=IA,xt};const Pu=0,H1=1,N1=2,B1=3,U1=4,Q1=5,z1=6,jf=7,Y1=8,$u=9;function WA(){const l=this;let u,c=0,f,r=0,o=0,h=0,v=0,y=0,A=0,E=0,S,O=0,X,B=0;function b(p,x,R,U,Z,F,j,D){let N,K,J,k,nt,P,st,it,H,_,$,ht,tt,C,L,W;st=D.next_in_index,it=D.avail_in,nt=j.bitb,P=j.bitk,H=j.write,_=H<j.read?j.read-H-1:j.end-H,$=Me[p],ht=Me[x];do{for(;P<20;)it--,nt|=(D.read_byte(st++)&255)<<P,P+=8;if(N=nt&$,K=R,J=U,W=(J+N)*3,(k=K[W])===0){nt>>=K[W+1],P-=K[W+1],j.win[H++]=K[W+2],_--;continue}do{if(nt>>=K[W+1],P-=K[W+1],(k&16)!==0){for(k&=15,tt=K[W+2]+(nt&Me[k]),nt>>=k,P-=k;P<15;)it--,nt|=(D.read_byte(st++)&255)<<P,P+=8;N=nt&ht,K=Z,J=F,W=(J+N)*3,k=K[W];do if(nt>>=K[W+1],P-=K[W+1],(k&16)!==0){for(k&=15;P<k;)it--,nt|=(D.read_byte(st++)&255)<<P,P+=8;if(C=K[W+2]+(nt&Me[k]),nt>>=k,P-=k,_-=tt,H>=C)L=H-C,H-L>0&&2>H-L?(j.win[H++]=j.win[L++],j.win[H++]=j.win[L++],tt-=2):(j.win.set(j.win.subarray(L,L+2),H),H+=2,L+=2,tt-=2);else{L=H-C;do L+=j.end;while(L<0);if(k=j.end-L,tt>k){if(tt-=k,H-L>0&&k>H-L)do j.win[H++]=j.win[L++];while(--k!==0);else j.win.set(j.win.subarray(L,L+k),H),H+=k,L+=k,k=0;L=0}}if(H-L>0&&tt>H-L)do j.win[H++]=j.win[L++];while(--tt!==0);else j.win.set(j.win.subarray(L,L+tt),H),H+=tt,L+=tt,tt=0;break}else if((k&64)===0)N+=K[W+2],N+=nt&Me[k],W=(J+N)*3,k=K[W];else return D.msg="invalid distance code",tt=D.avail_in-it,tt=P>>3<tt?P>>3:tt,it+=tt,st-=tt,P-=tt<<3,j.bitb=nt,j.bitk=P,D.avail_in=it,D.total_in+=st-D.next_in_index,D.next_in_index=st,j.write=H,Ut;while(!0);break}if((k&64)===0){if(N+=K[W+2],N+=nt&Me[k],W=(J+N)*3,(k=K[W])===0){nt>>=K[W+1],P-=K[W+1],j.win[H++]=K[W+2],_--;break}}else return(k&32)!==0?(tt=D.avail_in-it,tt=P>>3<tt?P>>3:tt,it+=tt,st-=tt,P-=tt<<3,j.bitb=nt,j.bitk=P,D.avail_in=it,D.total_in+=st-D.next_in_index,D.next_in_index=st,j.write=H,bn):(D.msg="invalid literal/length code",tt=D.avail_in-it,tt=P>>3<tt?P>>3:tt,it+=tt,st-=tt,P-=tt<<3,j.bitb=nt,j.bitk=P,D.avail_in=it,D.total_in+=st-D.next_in_index,D.next_in_index=st,j.write=H,Ut)}while(!0)}while(_>=258&&it>=10);return tt=D.avail_in-it,tt=P>>3<tt?P>>3:tt,it+=tt,st-=tt,P-=tt<<3,j.bitb=nt,j.bitk=P,D.avail_in=it,D.total_in+=st-D.next_in_index,D.next_in_index=st,j.write=H,xt}l.init=function(p,x,R,U,Z,F){u=Pu,A=p,E=x,S=R,O=U,X=Z,B=F,f=null},l.proc=function(p,x,R){let U,Z,F,j=0,D=0,N=0,K,J,k,nt;for(N=x.next_in_index,K=x.avail_in,j=p.bitb,D=p.bitk,J=p.write,k=J<p.read?p.read-J-1:p.end-J;;)switch(u){case Pu:if(k>=258&&K>=10&&(p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,R=b(A,E,S,O,X,B,p,x),N=x.next_in_index,K=x.avail_in,j=p.bitb,D=p.bitk,J=p.write,k=J<p.read?p.read-J-1:p.end-J,R!=xt)){u=R==bn?jf:$u;break}o=A,f=S,r=O,u=H1;case H1:for(U=o;D<U;){if(K!==0)R=xt;else return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);K--,j|=(x.read_byte(N++)&255)<<D,D+=8}if(Z=(r+(j&Me[U]))*3,j>>>=f[Z+1],D-=f[Z+1],F=f[Z],F===0){h=f[Z+2],u=z1;break}if((F&16)!==0){v=F&15,c=f[Z+2],u=N1;break}if((F&64)===0){o=F,r=Z/3+f[Z+2];break}if((F&32)!==0){u=jf;break}return u=$u,x.msg="invalid literal/length code",R=Ut,p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);case N1:for(U=v;D<U;){if(K!==0)R=xt;else return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);K--,j|=(x.read_byte(N++)&255)<<D,D+=8}c+=j&Me[U],j>>=U,D-=U,o=E,f=X,r=B,u=B1;case B1:for(U=o;D<U;){if(K!==0)R=xt;else return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);K--,j|=(x.read_byte(N++)&255)<<D,D+=8}if(Z=(r+(j&Me[U]))*3,j>>=f[Z+1],D-=f[Z+1],F=f[Z],(F&16)!==0){v=F&15,y=f[Z+2],u=U1;break}if((F&64)===0){o=F,r=Z/3+f[Z+2];break}return u=$u,x.msg="invalid distance code",R=Ut,p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);case U1:for(U=v;D<U;){if(K!==0)R=xt;else return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);K--,j|=(x.read_byte(N++)&255)<<D,D+=8}y+=j&Me[U],j>>=U,D-=U,u=Q1;case Q1:for(nt=J-y;nt<0;)nt+=p.end;for(;c!==0;){if(k===0&&(J==p.end&&p.read!==0&&(J=0,k=J<p.read?p.read-J-1:p.end-J),k===0&&(p.write=J,R=p.inflate_flush(x,R),J=p.write,k=J<p.read?p.read-J-1:p.end-J,J==p.end&&p.read!==0&&(J=0,k=J<p.read?p.read-J-1:p.end-J),k===0)))return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);p.win[J++]=p.win[nt++],k--,nt==p.end&&(nt=0),c--}u=Pu;break;case z1:if(k===0&&(J==p.end&&p.read!==0&&(J=0,k=J<p.read?p.read-J-1:p.end-J),k===0&&(p.write=J,R=p.inflate_flush(x,R),J=p.write,k=J<p.read?p.read-J-1:p.end-J,J==p.end&&p.read!==0&&(J=0,k=J<p.read?p.read-J-1:p.end-J),k===0)))return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);R=xt,p.win[J++]=h,k--,u=Pu;break;case jf:if(D>7&&(D-=8,K++,N--),p.write=J,R=p.inflate_flush(x,R),J=p.write,k=J<p.read?p.read-J-1:p.end-J,p.read!=p.write)return p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);u=Y1;case Y1:return R=bn,p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);case $u:return R=Ut,p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R);default:return R=ye,p.bitb=j,p.bitk=D,x.avail_in=K,x.total_in+=N-x.next_in_index,x.next_in_index=N,p.write=J,p.inflate_flush(x,R)}},l.free=function(){}}const L1=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],bl=0,Hf=1,G1=2,X1=3,V1=4,Z1=5,tc=6,ec=7,q1=8,Da=9;function _A(l,u){const c=this;let f=bl,r=0,o=0,h=0,v;const y=[0],A=[0],E=new WA;let S=0,O=new Int32Array(L2*3);const X=0,B=new Wf;c.bitk=0,c.bitb=0,c.win=new Uint8Array(u),c.end=u,c.read=0,c.write=0,c.reset=function(b,p){p&&(p[0]=X),f==tc&&E.free(b),f=bl,c.bitk=0,c.bitb=0,c.read=c.write=0},c.reset(l,null),c.inflate_flush=function(b,p){let x,R,U;return R=b.next_out_index,U=c.read,x=(U<=c.write?c.write:c.end)-U,x>b.avail_out&&(x=b.avail_out),x!==0&&p==xn&&(p=xt),b.avail_out-=x,b.total_out+=x,b.next_out.set(c.win.subarray(U,U+x),R),R+=x,U+=x,U==c.end&&(U=0,c.write==c.end&&(c.write=0),x=c.write-U,x>b.avail_out&&(x=b.avail_out),x!==0&&p==xn&&(p=xt),b.avail_out-=x,b.total_out+=x,b.next_out.set(c.win.subarray(U,U+x),R),R+=x,U+=x),b.next_out_index=R,c.read=U,p},c.proc=function(b,p){let x,R,U,Z,F,j,D,N;for(Z=b.next_in_index,F=b.avail_in,R=c.bitb,U=c.bitk,j=c.write,D=j<c.read?c.read-j-1:c.end-j;;){let K,J,k,nt,P,st,it,H;switch(f){case bl:for(;U<3;){if(F!==0)p=xt;else return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);F--,R|=(b.read_byte(Z++)&255)<<U,U+=8}switch(x=R&7,S=x&1,x>>>1){case 0:R>>>=3,U-=3,x=U&7,R>>>=x,U-=x,f=Hf;break;case 1:K=[],J=[],k=[[]],nt=[[]],Wf.inflate_trees_fixed(K,J,k,nt),E.init(K[0],J[0],k[0],0,nt[0],0),R>>>=3,U-=3,f=tc;break;case 2:R>>>=3,U-=3,f=X1;break;case 3:return R>>>=3,U-=3,f=Da,b.msg="invalid block type",p=Ut,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p)}break;case Hf:for(;U<32;){if(F!==0)p=xt;else return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);F--,R|=(b.read_byte(Z++)&255)<<U,U+=8}if((~R>>>16&65535)!=(R&65535))return f=Da,b.msg="invalid stored block lengths",p=Ut,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);r=R&65535,R=U=0,f=r!==0?G1:S!==0?ec:bl;break;case G1:if(F===0||D===0&&(j==c.end&&c.read!==0&&(j=0,D=j<c.read?c.read-j-1:c.end-j),D===0&&(c.write=j,p=c.inflate_flush(b,p),j=c.write,D=j<c.read?c.read-j-1:c.end-j,j==c.end&&c.read!==0&&(j=0,D=j<c.read?c.read-j-1:c.end-j),D===0)))return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);if(p=xt,x=r,x>F&&(x=F),x>D&&(x=D),c.win.set(b.read_buf(Z,x),j),Z+=x,F-=x,j+=x,D-=x,(r-=x)!==0)break;f=S!==0?ec:bl;break;case X1:for(;U<14;){if(F!==0)p=xt;else return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);F--,R|=(b.read_byte(Z++)&255)<<U,U+=8}if(o=x=R&16383,(x&31)>29||(x>>5&31)>29)return f=Da,b.msg="too many length or distance symbols",p=Ut,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);if(x=258+(x&31)+(x>>5&31),!v||v.length<x)v=[];else for(N=0;N<x;N++)v[N]=0;R>>>=14,U-=14,h=0,f=V1;case V1:for(;h<4+(o>>>10);){for(;U<3;){if(F!==0)p=xt;else return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);F--,R|=(b.read_byte(Z++)&255)<<U,U+=8}v[L1[h++]]=R&7,R>>>=3,U-=3}for(;h<19;)v[L1[h++]]=0;if(y[0]=7,x=B.inflate_trees_bits(v,y,A,O,b),x!=xt)return p=x,p==Ut&&(v=null,f=Da),c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);h=0,f=Z1;case Z1:for(;x=o,!(h>=258+(x&31)+(x>>5&31));){let _,$;for(x=y[0];U<x;){if(F!==0)p=xt;else return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);F--,R|=(b.read_byte(Z++)&255)<<U,U+=8}if(x=O[(A[0]+(R&Me[x]))*3+1],$=O[(A[0]+(R&Me[x]))*3+2],$<16)R>>>=x,U-=x,v[h++]=$;else{for(N=$==18?7:$-14,_=$==18?11:3;U<x+N;){if(F!==0)p=xt;else return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);F--,R|=(b.read_byte(Z++)&255)<<U,U+=8}if(R>>>=x,U-=x,_+=R&Me[N],R>>>=N,U-=N,N=h,x=o,N+_>258+(x&31)+(x>>5&31)||$==16&&N<1)return v=null,f=Da,b.msg="invalid bit length repeat",p=Ut,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);$=$==16?v[N-1]:0;do v[N++]=$;while(--_!==0);h=N}}if(A[0]=-1,P=[],st=[],it=[],H=[],P[0]=9,st[0]=6,x=o,x=B.inflate_trees_dynamic(257+(x&31),1+(x>>5&31),v,P,st,it,H,O,b),x!=xt)return x==Ut&&(v=null,f=Da),p=x,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);E.init(P[0],st[0],O,it[0],O,H[0]),f=tc;case tc:if(c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,(p=E.proc(c,b,p))!=bn)return c.inflate_flush(b,p);if(p=xt,E.free(b),Z=b.next_in_index,F=b.avail_in,R=c.bitb,U=c.bitk,j=c.write,D=j<c.read?c.read-j-1:c.end-j,S===0){f=bl;break}f=ec;case ec:if(c.write=j,p=c.inflate_flush(b,p),j=c.write,D=j<c.read?c.read-j-1:c.end-j,c.read!=c.write)return c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);f=q1;case q1:return p=bn,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);case Da:return p=Ut,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p);default:return p=ye,c.bitb=R,c.bitk=U,b.avail_in=F,b.total_in+=Z-b.next_in_index,b.next_in_index=Z,c.write=j,c.inflate_flush(b,p)}}},c.free=function(b){c.reset(b,null),c.win=null,O=null},c.set_dictionary=function(b,p,x){c.win.set(b.subarray(p,p+x),0),c.read=c.write=x},c.sync_point=function(){return f==Hf?1:0}}const PA=32,$A=8,t8=0,I1=1,K1=2,k1=3,J1=4,F1=5,Nf=6,pi=7,W1=12,ea=13,e8=[0,0,255,255];function n8(){const l=this;l.mode=0,l.method=0,l.was=[0],l.need=0,l.marker=0,l.wbits=0;function u(c){return!c||!c.istate?ye:(c.total_in=c.total_out=0,c.msg=null,c.istate.mode=pi,c.istate.blocks.reset(c,null),xt)}l.inflateEnd=function(c){return l.blocks&&l.blocks.free(c),l.blocks=null,xt},l.inflateInit=function(c,f){return c.msg=null,l.blocks=null,f<8||f>15?(l.inflateEnd(c),ye):(l.wbits=f,c.istate.blocks=new _A(c,1<<f),u(c),xt)},l.inflate=function(c,f){let r,o;if(!c||!c.istate||!c.next_in)return ye;const h=c.istate;for(f=f==XA?xn:xt,r=xn;;)switch(h.mode){case t8:if(c.avail_in===0)return r;if(r=f,c.avail_in--,c.total_in++,((h.method=c.read_byte(c.next_in_index++))&15)!=$A){h.mode=ea,c.msg="unknown compression method",h.marker=5;break}if((h.method>>4)+8>h.wbits){h.mode=ea,c.msg="invalid win size",h.marker=5;break}h.mode=I1;case I1:if(c.avail_in===0)return r;if(r=f,c.avail_in--,c.total_in++,o=c.read_byte(c.next_in_index++)&255,((h.method<<8)+o)%31!==0){h.mode=ea,c.msg="incorrect header check",h.marker=5;break}if((o&PA)===0){h.mode=pi;break}h.mode=K1;case K1:if(c.avail_in===0)return r;r=f,c.avail_in--,c.total_in++,h.need=(c.read_byte(c.next_in_index++)&255)<<24&4278190080,h.mode=k1;case k1:if(c.avail_in===0)return r;r=f,c.avail_in--,c.total_in++,h.need+=(c.read_byte(c.next_in_index++)&255)<<16&16711680,h.mode=J1;case J1:if(c.avail_in===0)return r;r=f,c.avail_in--,c.total_in++,h.need+=(c.read_byte(c.next_in_index++)&255)<<8&65280,h.mode=F1;case F1:return c.avail_in===0?r:(r=f,c.avail_in--,c.total_in++,h.need+=c.read_byte(c.next_in_index++)&255,h.mode=Nf,LA);case Nf:return h.mode=ea,c.msg="need dictionary",h.marker=0,ye;case pi:if(r=h.blocks.proc(c,r),r==Ut){h.mode=ea,h.marker=0;break}if(r==xt&&(r=f),r!=bn)return r;r=f,h.blocks.reset(c,h.was),h.mode=W1;case W1:return c.avail_in=0,bn;case ea:return Ut;default:return ye}},l.inflateSetDictionary=function(c,f,r){let o=0,h=r;if(!c||!c.istate||c.istate.mode!=Nf)return ye;const v=c.istate;return h>=1<<v.wbits&&(h=(1<<v.wbits)-1,o=r-h),v.blocks.set_dictionary(f,o,h),v.mode=pi,xt},l.inflateSync=function(c){let f,r,o,h,v;if(!c||!c.istate)return ye;const y=c.istate;if(y.mode!=ea&&(y.mode=ea,y.marker=0),(f=c.avail_in)===0)return xn;for(r=c.next_in_index,o=y.marker;f!==0&&o<4;)c.read_byte(r)==e8[o]?o++:c.read_byte(r)!==0?o=0:o=4-o,r++,f--;return c.total_in+=r-c.next_in_index,c.next_in_index=r,c.avail_in=f,y.marker=o,o!=4?Ut:(h=c.total_in,v=c.total_out,u(c),c.total_in=h,c.total_out=v,y.mode=pi,xt)},l.inflateSyncPoint=function(c){return!c||!c.istate||!c.istate.blocks?ye:c.istate.blocks.sync_point()}}function G2(){}G2.prototype={inflateInit(l){const u=this;return u.istate=new n8,l||(l=YA),u.istate.inflateInit(u,l)},inflate(l){const u=this;return u.istate?u.istate.inflate(u,l):ye},inflateEnd(){const l=this;if(!l.istate)return ye;const u=l.istate.inflateEnd(l);return l.istate=null,u},inflateSync(){const l=this;return l.istate?l.istate.inflateSync(l):ye},inflateSetDictionary(l,u){const c=this;return c.istate?c.istate.inflateSetDictionary(c,l,u):ye},read_byte(l){return this.next_in[l]},read_buf(l,u){return this.next_in.subarray(l,l+u)}};function a8(l){const u=this,c=new G2,f=l&&l.chunkSize?Math.floor(l.chunkSize*2):128*1024,r=GA,o=new Uint8Array(f);let h=!1;c.inflateInit(),c.next_out=o,u.append=function(v,y){const A=[];let E,S,O=0,X=0,B=0;if(v.length!==0){c.next_in_index=0,c.next_in=v,c.avail_in=v.length;do{if(c.next_out_index=0,c.avail_out=f,c.avail_in===0&&!h&&(c.next_in_index=0,h=!0),E=c.inflate(r),h&&E===xn){if(c.avail_in!==0)throw new Error("inflating: bad input")}else if(E!==xt&&E!==bn)throw new Error("inflating: "+c.msg);if((h||E===bn)&&c.avail_in===v.length)throw new Error("inflating: bad input");c.next_out_index&&(c.next_out_index===f?A.push(new Uint8Array(o)):A.push(o.subarray(0,c.next_out_index))),B+=c.next_out_index,y&&c.next_in_index>0&&c.next_in_index!=O&&(y(c.next_in_index),O=c.next_in_index)}while(c.avail_in>0||c.avail_out===0);return A.length>1?(S=new Uint8Array(B),A.forEach(function(b){S.set(b,X),X+=b.length})):S=A[0]?new Uint8Array(A[0]):new Uint8Array,S}},u.flush=function(){c.inflateEnd()}}const ja=4294967295,la=65535,l8=8,i8=0,u8=99,c8=67324752,X2=134695760,s8=X2,_1=33639248,f8=101010256,P1=101075792,r8=117853008,pn=22,Bf=20,Uf=56,o8=12,d8=20,$1=4,h8=1,m8=39169,g8=10,A8=1,v8=21589,y8=28789,E8=25461,p8=6534,t2=1,b8=6,e2=8,n2=2048,a2=16,x8=61440,S8=16384,T8=73,l2="/",Qf=30,C8=10,O8=14,w8=18,Jt=void 0,sa="undefined",Mi="function";class i2{constructor(u){return class extends TransformStream{constructor(c,f){const r=new u(f);super({transform(o,h){h.enqueue(r.append(o))},flush(o){const h=r.flush();h&&o.enqueue(h)}})}}}}const R8=64;let V2=2;try{typeof navigator!=sa&&navigator.hardwareConcurrency&&(V2=navigator.hardwareConcurrency)}catch{}const D8={chunkSize:512*1024,maxWorkers:V2,terminateWorkerTimeout:5e3,useWebWorkers:!0,useCompressionStream:!0,workerScripts:Jt,CompressionStreamNative:typeof CompressionStream!=sa&&CompressionStream,DecompressionStreamNative:typeof DecompressionStream!=sa&&DecompressionStream},ia=Object.assign({},D8);function Z2(){return ia}function M8(l){return Math.max(l.chunkSize,R8)}function q2(l){const{baseURL:u,chunkSize:c,maxWorkers:f,terminateWorkerTimeout:r,useCompressionStream:o,useWebWorkers:h,Deflate:v,Inflate:y,CompressionStream:A,DecompressionStream:E,workerScripts:S}=l;if(na("baseURL",u),na("chunkSize",c),na("maxWorkers",f),na("terminateWorkerTimeout",r),na("useCompressionStream",o),na("useWebWorkers",h),v&&(ia.CompressionStream=new i2(v)),y&&(ia.DecompressionStream=new i2(y)),na("CompressionStream",A),na("DecompressionStream",E),S!==Jt){const{deflate:O,inflate:X}=S;if((O||X)&&(ia.workerScripts||(ia.workerScripts={})),O){if(!Array.isArray(O))throw new Error("workerScripts.deflate must be an array");ia.workerScripts.deflate=O}if(X){if(!Array.isArray(X))throw new Error("workerScripts.inflate must be an array");ia.workerScripts.inflate=X}}}function na(l,u){u!==Jt&&(ia[l]=u)}function j8(){return"application/octet-stream"}const I2=[];for(let l=0;l<256;l++){let u=l;for(let c=0;c<8;c++)u&1?u=u>>>1^3988292384:u=u>>>1;I2[l]=u}class cc{constructor(u){this.crc=u||-1}append(u){let c=this.crc|0;for(let f=0,r=u.length|0;f<r;f++)c=c>>>8^I2[(c^u[f])&255];this.crc=c}get(){return~this.crc}}class K2 extends TransformStream{constructor(){let u;const c=new cc;super({transform(f,r){c.append(f),r.enqueue(f)},flush(){const f=new Uint8Array(4);new DataView(f.buffer).setUint32(0,c.get()),u.value=f}}),u=this}}function H8(l){if(typeof TextEncoder==sa){l=unescape(encodeURIComponent(l));const u=new Uint8Array(l.length);for(let c=0;c<u.length;c++)u[c]=l.charCodeAt(c);return u}else return new TextEncoder().encode(l)}const re={concat(l,u){if(l.length===0||u.length===0)return l.concat(u);const c=l[l.length-1],f=re.getPartial(c);return f===32?l.concat(u):re._shiftRight(u,f,c|0,l.slice(0,l.length-1))},bitLength(l){const u=l.length;if(u===0)return 0;const c=l[u-1];return(u-1)*32+re.getPartial(c)},clamp(l,u){if(l.length*32<u)return l;l=l.slice(0,Math.ceil(u/32));const c=l.length;return u=u&31,c>0&&u&&(l[c-1]=re.partial(u,l[c-1]&2147483648>>u-1,1)),l},partial(l,u,c){return l===32?u:(c?u|0:u<<32-l)+l*1099511627776},getPartial(l){return Math.round(l/1099511627776)||32},_shiftRight(l,u,c,f){for(f===void 0&&(f=[]);u>=32;u-=32)f.push(c),c=0;if(u===0)return f.concat(l);for(let h=0;h<l.length;h++)f.push(c|l[h]>>>u),c=l[h]<<32-u;const r=l.length?l[l.length-1]:0,o=re.getPartial(r);return f.push(re.partial(u+o&31,u+o>32?c:f.pop(),1)),f}},sc={bytes:{fromBits(l){const c=re.bitLength(l)/8,f=new Uint8Array(c);let r;for(let o=0;o<c;o++)(o&3)===0&&(r=l[o/4]),f[o]=r>>>24,r<<=8;return f},toBits(l){const u=[];let c,f=0;for(c=0;c<l.length;c++)f=f<<8|l[c],(c&3)===3&&(u.push(f),f=0);return c&3&&u.push(re.partial(8*(c&3),f)),u}}},k2={};k2.sha1=class{constructor(l){const u=this;u.blockSize=512,u._init=[1732584193,4023233417,2562383102,271733878,3285377520],u._key=[1518500249,1859775393,2400959708,3395469782],l?(u._h=l._h.slice(0),u._buffer=l._buffer.slice(0),u._length=l._length):u.reset()}reset(){const l=this;return l._h=l._init.slice(0),l._buffer=[],l._length=0,l}update(l){const u=this;typeof l=="string"&&(l=sc.utf8String.toBits(l));const c=u._buffer=re.concat(u._buffer,l),f=u._length,r=u._length=f+re.bitLength(l);if(r>9007199254740991)throw new Error("Cannot hash more than 2^53 - 1 bits");const o=new Uint32Array(c);let h=0;for(let 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u=this;u._tables=[[[],[],[],[],[]],[[],[],[],[],[]]],u._tables[0][0][0]||u._precompute();const c=u._tables[0][4],f=u._tables[1],r=l.length;let o,h,v,y=1;if(r!==4&&r!==6&&r!==8)throw new Error("invalid aes key size");for(u._key=[h=l.slice(0),v=[]],o=r;o<4*r+28;o++){let A=h[o-1];(o%r===0||r===8&&o%r===4)&&(A=c[A>>>24]<<24^c[A>>16&255]<<16^c[A>>8&255]<<8^c[A&255],o%r===0&&(A=A<<8^A>>>24^y<<24,y=y<<1^(y>>7)*283)),h[o]=h[o-r]^A}for(let A=0;o;A++,o--){const E=h[A&3?o:o-4];o<=4||A<4?v[A]=E:v[A]=f[0][c[E>>>24]]^f[1][c[E>>16&255]]^f[2][c[E>>8&255]]^f[3][c[E&255]]}}encrypt(l){return this._crypt(l,0)}decrypt(l){return this._crypt(l,1)}_precompute(){const l=this._tables[0],u=this._tables[1],c=l[4],f=u[4],r=[],o=[];let h,v,y,A;for(let E=0;E<256;E++)o[(r[E]=E<<1^(E>>7)*283)^E]=E;for(let E=h=0;!c[E];E^=v||1,h=o[h]||1){let S=h^h<<1^h<<2^h<<3^h<<4;S=S>>8^S&255^99,c[E]=S,f[S]=E,A=r[y=r[v=r[E]]];let O=A*16843009^y*65537^v*257^E*16843008,X=r[S]*257^S*16843008;for(let B=0;B<4;B++)l[B][E]=X=X<<24^X>>>8,u[B][S]=O=O<<24^O>>>8}for(let E=0;E<5;E++)l[E]=l[E].slice(0),u[E]=u[E].slice(0)}_crypt(l,u){if(l.length!==4)throw new Error("invalid aes block size");const c=this._key[u],f=c.length/4-2,r=[0,0,0,0],o=this._tables[u],h=o[0],v=o[1],y=o[2],A=o[3],E=o[4];let S=l[0]^c[0],O=l[u?3:1]^c[1],X=l[2]^c[2],B=l[u?1:3]^c[3],b=4,p,x,R;for(let U=0;U<f;U++)p=h[S>>>24]^v[O>>16&255]^y[X>>8&255]^A[B&255]^c[b],x=h[O>>>24]^v[X>>16&255]^y[B>>8&255]^A[S&255]^c[b+1],R=h[X>>>24]^v[B>>16&255]^y[S>>8&255]^A[O&255]^c[b+2],B=h[B>>>24]^v[S>>16&255]^y[O>>8&255]^A[X&255]^c[b+3],b+=4,S=p,O=x,X=R;for(let U=0;U<4;U++)r[u?3&-U:U]=E[S>>>24]<<24^E[O>>16&255]<<16^E[X>>8&255]<<8^E[B&255]^c[b++],p=S,S=O,O=X,X=B,B=p;return r}};const N8={getRandomValues(l){const u=new Uint32Array(l.buffer),c=f=>{let r=987654321;const o=4294967295;return function(){return r=36969*(r&65535)+(r>>16)&o,f=18e3*(f&65535)+(f>>16)&o,(((r<<16)+f&o)/4294967296+.5)*(Math.random()>.5?1:-1)}};for(let f=0,r;f<l.length;f+=4){const o=c((r||Math.random())*4294967296);r=o()*987654071,u[f/4]=o()*4294967296|0}return l}},F2={};F2.ctrGladman=class{constructor(l,u){this._prf=l,this._initIv=u,this._iv=u}reset(){this._iv=this._initIv}update(l){return this.calculate(this._prf,l,this._iv)}incWord(l){if((l>>24&255)===255){let u=l>>16&255,c=l>>8&255,f=l&255;u===255?(u=0,c===255?(c=0,f===255?f=0:++f):++c):++u,l=0,l+=u<<16,l+=c<<8,l+=f}else l+=1<<24;return l}incCounter(l){(l[0]=this.incWord(l[0]))===0&&(l[1]=this.incWord(l[1]))}calculate(l,u,c){let f;if(!(f=u.length))return[];const r=re.bitLength(u);for(let o=0;o<f;o+=4){this.incCounter(c);const h=l.encrypt(c);u[o]^=h[0],u[o+1]^=h[1],u[o+2]^=h[2],u[o+3]^=h[3]}return re.clamp(u,r)}};const Ha={importKey(l){return new Ha.hmacSha1(sc.bytes.toBits(l))},pbkdf2(l,u,c,f){if(c=c||1e4,f<0||c<0)throw new Error("invalid params to pbkdf2");const r=(f>>5)+1<<2;let o,h,v,y,A;const E=new ArrayBuffer(r),S=new DataView(E);let O=0;const X=re;for(u=sc.bytes.toBits(u),A=1;O<(r||1);A++){for(o=h=l.encrypt(X.concat(u,[A])),v=1;v<c;v++)for(h=l.encrypt(h),y=0;y<h.length;y++)o[y]^=h[y];for(v=0;O<(r||1)&&v<o.length;v++)S.setInt32(O,o[v]),O+=4}return E.slice(0,f/8)}};Ha.hmacSha1=class{constructor(l){const u=this,c=u._hash=k2.sha1,f=[[],[]];u._baseHash=[new c,new c];const r=u._baseHash[0].blockSize/32;l.length>r&&(l=new c().update(l).finalize());for(let o=0;o<r;o++)f[0][o]=l[o]^909522486,f[1][o]=l[o]^1549556828;u._baseHash[0].update(f[0]),u._baseHash[1].update(f[1]),u._resultHash=new c(u._baseHash[0])}reset(){const l=this;l._resultHash=new l._hash(l._baseHash[0]),l._updated=!1}update(l){const u=this;u._updated=!0,u._resultHash.update(l)}digest(){const l=this,u=l._resultHash.finalize(),c=new l._hash(l._baseHash[1]).update(u).finalize();return l.reset(),c}encrypt(l){if(this._updated)throw new Error("encrypt on already updated hmac called!");return this.update(l),this.digest(l)}};const B8=typeof crypto!=sa&&typeof crypto.getRandomValues==Mi,rr="Invalid password",or="Invalid signature",dr="zipjs-abort-check-password";function W2(l){return B8?crypto.getRandomValues(l):N8.getRandomValues(l)}const xl=16,U8="raw",_2={name:"PBKDF2"},Q8={name:"HMAC"},z8="SHA-1",Y8=Object.assign({hash:Q8},_2),_f=Object.assign({iterations:1e3,hash:{name:z8}},_2),L8=["deriveBits"],Ci=[8,12,16],bi=[16,24,32],aa=10,G8=[0,0,0,0],oc=typeof crypto!=sa,ji=oc&&crypto.subtle,P2=oc&&typeof ji!=sa,Pe=sc.bytes,X8=J2.aes,V8=F2.ctrGladman,Z8=Ha.hmacSha1;let u2=oc&&P2&&typeof ji.importKey==Mi,c2=oc&&P2&&typeof ji.deriveBits==Mi;class q8 extends TransformStream{constructor({password:u,rawPassword:c,signed:f,encryptionStrength:r,checkPasswordOnly:o}){super({start(){Object.assign(this,{ready:new Promise(h=>this.resolveReady=h),password:eh(u,c),signed:f,strength:r-1,pending:new Uint8Array})},async transform(h,v){const y=this,{password:A,strength:E,resolveReady:S,ready:O}=y;A?(await K8(y,E,A,Xe(h,0,Ci[E]+2)),h=Xe(h,Ci[E]+2),o?v.error(new Error(dr)):S()):await O;const X=new Uint8Array(h.length-aa-(h.length-aa)%xl);v.enqueue($2(y,h,X,0,aa,!0))},async flush(h){const{signed:v,ctr:y,hmac:A,pending:E,ready:S}=this;if(A&&y){await S;const O=Xe(E,0,E.length-aa),X=Xe(E,E.length-aa);let B=new Uint8Array;if(O.length){const b=wi(Pe,O);A.update(b);const p=y.update(b);B=Oi(Pe,p)}if(v){const b=Xe(Oi(Pe,A.digest()),0,aa);for(let p=0;p<aa;p++)if(b[p]!=X[p])throw new Error(or)}h.enqueue(B)}}})}}class I8 extends TransformStream{constructor({password:u,rawPassword:c,encryptionStrength:f}){let r;super({start(){Object.assign(this,{ready:new Promise(o=>this.resolveReady=o),password:eh(u,c),strength:f-1,pending:new Uint8Array})},async transform(o,h){const v=this,{password:y,strength:A,resolveReady:E,ready:S}=v;let O=new Uint8Array;y?(O=await k8(v,A,y),E()):await S;const X=new Uint8Array(O.length+o.length-o.length%xl);X.set(O,0),h.enqueue($2(v,o,X,O.length,0))},async flush(o){const{ctr:h,hmac:v,pending:y,ready:A}=this;if(v&&h){await A;let E=new Uint8Array;if(y.length){const S=h.update(wi(Pe,y));v.update(S),E=Oi(Pe,S)}r.signature=Oi(Pe,v.digest()).slice(0,aa),o.enqueue(hr(E,r.signature))}}}),r=this}}function $2(l,u,c,f,r,o){const{ctr:h,hmac:v,pending:y}=l,A=u.length-r;y.length&&(u=hr(y,u),c=W8(c,A-A%xl));let E;for(E=0;E<=A-xl;E+=xl){const S=wi(Pe,Xe(u,E,E+xl));o&&v.update(S);const O=h.update(S);o||v.update(O),c.set(Oi(Pe,O),E+f)}return l.pending=Xe(u,E),c}async function K8(l,u,c,f){const r=await th(l,u,c,Xe(f,0,Ci[u])),o=Xe(f,Ci[u]);if(r[0]!=o[0]||r[1]!=o[1])throw new Error(rr)}async function k8(l,u,c){const f=W2(new Uint8Array(Ci[u])),r=await th(l,u,c,f);return hr(f,r)}async function th(l,u,c,f){l.password=null;const r=await J8(U8,c,Y8,!1,L8),o=await F8(Object.assign({salt:f},_f),r,8*(bi[u]*2+2)),h=new Uint8Array(o),v=wi(Pe,Xe(h,0,bi[u])),y=wi(Pe,Xe(h,bi[u],bi[u]*2)),A=Xe(h,bi[u]*2);return Object.assign(l,{keys:{key:v,authentication:y,passwordVerification:A},ctr:new V8(new X8(v),Array.from(G8)),hmac:new Z8(y)}),A}async function J8(l,u,c,f,r){if(u2)try{return await ji.importKey(l,u,c,f,r)}catch{return u2=!1,Ha.importKey(u)}else return Ha.importKey(u)}async function F8(l,u,c){if(c2)try{return await ji.deriveBits(l,u,c)}catch{return c2=!1,Ha.pbkdf2(u,l.salt,_f.iterations,c)}else return Ha.pbkdf2(u,l.salt,_f.iterations,c)}function eh(l,u){return u===Jt?H8(l):u}function hr(l,u){let c=l;return l.length+u.length&&(c=new Uint8Array(l.length+u.length),c.set(l,0),c.set(u,l.length)),c}function W8(l,u){if(u&&u>l.length){const c=l;l=new Uint8Array(u),l.set(c,0)}return l}function Xe(l,u,c){return l.subarray(u,c)}function Oi(l,u){return l.fromBits(u)}function wi(l,u){return l.toBits(u)}const Ti=12;class _8 extends TransformStream{constructor({password:u,passwordVerification:c,checkPasswordOnly:f}){super({start(){Object.assign(this,{password:u,passwordVerification:c}),nh(this,u)},transform(r,o){const h=this;if(h.password){const v=s2(h,r.subarray(0,Ti));if(h.password=null,v.at(-1)!=h.passwordVerification)throw new Error(rr);r=r.subarray(Ti)}f?o.error(new Error(dr)):o.enqueue(s2(h,r))}})}}class P8 extends TransformStream{constructor({password:u,passwordVerification:c}){super({start(){Object.assign(this,{password:u,passwordVerification:c}),nh(this,u)},transform(f,r){const o=this;let h,v;if(o.password){o.password=null;const y=W2(new Uint8Array(Ti));y[Ti-1]=o.passwordVerification,h=new Uint8Array(f.length+y.length),h.set(f2(o,y),0),v=Ti}else h=new Uint8Array(f.length),v=0;h.set(f2(o,f),v),r.enqueue(h)}})}}function s2(l,u){const c=new Uint8Array(u.length);for(let f=0;f<u.length;f++)c[f]=ah(l)^u[f],mr(l,c[f]);return c}function f2(l,u){const c=new Uint8Array(u.length);for(let f=0;f<u.length;f++)c[f]=ah(l)^u[f],mr(l,u[f]);return c}function nh(l,u){const c=[305419896,591751049,878082192];Object.assign(l,{keys:c,crcKey0:new cc(c[0]),crcKey2:new cc(c[2])});for(let f=0;f<u.length;f++)mr(l,u.charCodeAt(f))}function mr(l,u){let[c,f,r]=l.keys;l.crcKey0.append([u]),c=~l.crcKey0.get(),f=r2(Math.imul(r2(f+lh(c)),134775813)+1),l.crcKey2.append([f>>>24]),r=~l.crcKey2.get(),l.keys=[c,f,r]}function ah(l){const u=l.keys[2]|2;return lh(Math.imul(u,u^1)>>>8)}function lh(l){return l&255}function r2(l){return l&4294967295}const gr="Invalid uncompressed size",o2="deflate-raw";class $8 extends TransformStream{constructor(u,{chunkSize:c,CompressionStream:f,CompressionStreamNative:r}){super({});const{compressed:o,encrypted:h,useCompressionStream:v,zipCrypto:y,signed:A,level:E}=u,S=this;let O,X,B=super.readable;(!h||y)&&A&&(O=new K2,B=Sn(B,O)),o&&(B=uh(B,v,{level:E,chunkSize:c},r,f)),h&&(y?B=Sn(B,new P8(u)):(X=new I8(u),B=Sn(B,X))),ih(S,B,()=>{let b;h&&!y&&(b=X.signature),(!h||y)&&A&&(b=new DataView(O.value.buffer).getUint32(0)),S.signature=b})}}class t3 extends TransformStream{constructor(u,{chunkSize:c,DecompressionStream:f,DecompressionStreamNative:r}){super({});const{zipCrypto:o,encrypted:h,signed:v,signature:y,compressed:A,useCompressionStream:E}=u;let S,O,X=super.readable;h&&(o?X=Sn(X,new _8(u)):(O=new q8(u),X=Sn(X,O))),A&&(X=uh(X,E,{chunkSize:c},r,f)),(!h||o)&&v&&(S=new K2,X=Sn(X,S)),ih(this,X,()=>{if((!h||o)&&v){const B=new DataView(S.value.buffer);if(y!=B.getUint32(0,!1))throw new Error(or)}})}}function ih(l,u,c){u=Sn(u,new TransformStream({flush:c})),Object.defineProperty(l,"readable",{get(){return u}})}function uh(l,u,c,f,r){try{const o=u&&f?f:r;l=Sn(l,new o(o2,c))}catch(o){if(u)l=Sn(l,new r(o2,c));else throw o}return l}function Sn(l,u){return l.pipeThrough(u)}const e3="message",n3="start",a3="pull",d2="data",l3="ack",h2="close",i3="deflate",ch="inflate";class u3 extends TransformStream{constructor(u,c){super({});const f=this,{codecType:r}=u;let o;r.startsWith(i3)?o=$8:r.startsWith(ch)&&(o=t3),f.outputSize=0;let h=0;const v=new o(u,c),y=super.readable,A=new TransformStream({transform(S,O){S&&S.length&&(h+=S.length,O.enqueue(S))},flush(){Object.assign(f,{inputSize:h})}}),E=new TransformStream({transform(S,O){if(S&&S.length&&(O.enqueue(S),f.outputSize+=S.length,u.outputSize&&f.outputSize>u.outputSize))throw new Error(gr)},flush(){const{signature:S}=v;Object.assign(f,{signature:S,inputSize:h})}});Object.defineProperty(f,"readable",{get(){return y.pipeThrough(A).pipeThrough(v).pipeThrough(E)}})}}class c3 extends TransformStream{constructor(u){let c;super({transform:f,flush(r){c&&c.length&&r.enqueue(c)}});function f(r,o){if(c){const h=new Uint8Array(c.length+r.length);h.set(c),h.set(r,c.length),r=h,c=null}r.length>u?(o.enqueue(r.slice(0,u)),f(r.slice(u),o)):c=r}}}let sh=typeof Worker!=sa;class zf{constructor(u,{readable:c,writable:f},{options:r,config:o,streamOptions:h,useWebWorkers:v,transferStreams:y,scripts:A},E){const{signal:S}=h;return Object.assign(u,{busy:!0,readable:c.pipeThrough(new c3(o.chunkSize)).pipeThrough(new s3(h),{signal:S}),writable:f,options:Object.assign({},r),scripts:A,transferStreams:y,terminate(){return new Promise(O=>{const{worker:X,busy:B}=u;X?(B?u.resolveTerminated=O:(X.terminate(),O()),u.interface=null):O()})},onTaskFinished(){const{resolveTerminated:O}=u;O&&(u.resolveTerminated=null,u.terminated=!0,u.worker.terminate(),O()),u.busy=!1,E(u)}}),(v&&sh?f3:fh)(u,o)}}class s3 extends TransformStream{constructor({onstart:u,onprogress:c,size:f,onend:r}){let o=0;super({async start(){u&&await Yf(u,f)},async transform(h,v){o+=h.length,c&&await Yf(c,o,f),v.enqueue(h)},async flush(){r&&await Yf(r,o)}})}}async function Yf(l,...u){try{await l(...u)}catch{}}function fh(l,u){return{run:()=>r3(l,u)}}function f3(l,u){const{baseURL:c,chunkSize:f}=u;if(!l.interface){let r;try{r=h3(l.scripts[0],c,l)}catch{return sh=!1,fh(l,u)}Object.assign(l,{worker:r,interface:{run:()=>o3(l,{chunkSize:f})}})}return l.interface}async function r3({options:l,readable:u,writable:c,onTaskFinished:f},r){let o;try{o=new u3(l,r),await u.pipeThrough(o).pipeTo(c,{preventClose:!0,preventAbort:!0});const{signature:h,inputSize:v,outputSize:y}=o;return{signature:h,inputSize:v,outputSize:y}}catch(h){throw o&&(h.outputSize=o.outputSize),h}finally{f()}}async function o3(l,u){let c,f;const r=new Promise((O,X)=>{c=O,f=X});Object.assign(l,{reader:null,writer:null,resolveResult:c,rejectResult:f,result:r});const{readable:o,options:h,scripts:v}=l,{writable:y,closed:A}=d3(l.writable),E=lc({type:n3,scripts:v.slice(1),options:h,config:u,readable:o,writable:y},l);E||Object.assign(l,{reader:o.getReader(),writer:y.getWriter()});const S=await r;return E||await y.getWriter().close(),await A,S}function d3(l){let u;const c=new Promise(r=>u=r);return{writable:new WritableStream({async write(r){const o=l.getWriter();await o.ready,await o.write(r),o.releaseLock()},close(){u()},abort(r){return l.getWriter().abort(r)}}),closed:c}}let m2=!0,g2=!0;function h3(l,u,c){const f={type:"module"};let r,o;typeof l==Mi&&(l=l());try{r=new URL(l,u)}catch{r=l}if(m2)try{o=new Worker(r)}catch{m2=!1,o=new Worker(r,f)}else o=new Worker(r,f);return o.addEventListener(e3,h=>m3(h,c)),o}function lc(l,{worker:u,writer:c,onTaskFinished:f,transferStreams:r}){try{const{value:o,readable:h,writable:v}=l,y=[];if(o&&(o.byteLength<o.buffer.byteLength?l.value=o.buffer.slice(0,o.byteLength):l.value=o.buffer,y.push(l.value)),r&&g2?(h&&y.push(h),v&&y.push(v)):l.readable=l.writable=null,y.length)try{return u.postMessage(l,y),!0}catch{g2=!1,l.readable=l.writable=null,u.postMessage(l)}else u.postMessage(l)}catch(o){throw c&&c.releaseLock(),f(),o}}async function m3({data:l},u){const{type:c,value:f,messageId:r,result:o,error:h}=l,{reader:v,writer:y,resolveResult:A,rejectResult:E,onTaskFinished:S}=u;try{if(h){const{message:X,stack:B,code:b,name:p,outputSize:x}=h,R=new Error(X);Object.assign(R,{stack:B,code:b,name:p,outputSize:x}),O(R)}else{if(c==a3){const{value:X,done:B}=await v.read();lc({type:d2,value:X,done:B,messageId:r},u)}c==d2&&(await y.ready,await y.write(new Uint8Array(f)),lc({type:l3,messageId:r},u)),c==h2&&O(null,o)}}catch(X){lc({type:h2,messageId:r},u),O(X)}function O(X,B){X?E(X):A(B),y&&y.releaseLock(),S()}}let ua=[];const Lf=[];let A2=0;async function g3(l,u){const{options:c,config:f}=u,{transferStreams:r,useWebWorkers:o,useCompressionStream:h,codecType:v,compressed:y,signed:A,encrypted:E}=c,{workerScripts:S,maxWorkers:O}=f;u.transferStreams=r||r===Jt;const X=!y&&!A&&!E&&!u.transferStreams;return u.useWebWorkers=!X&&(o||o===Jt&&f.useWebWorkers),u.scripts=u.useWebWorkers&&S?S[v]:[],c.useCompressionStream=h||h===Jt&&f.useCompressionStream,(await B()).run();async function B(){const p=ua.find(x=>!x.busy);if(p)return Pf(p),new zf(p,l,u,b);if(ua.length<O){const x={indexWorker:A2};return A2++,ua.push(x),new zf(x,l,u,b)}else return new Promise(x=>Lf.push({resolve:x,stream:l,workerOptions:u}))}function b(p){if(Lf.length){const[{resolve:x,stream:R,workerOptions:U}]=Lf.splice(0,1);x(new zf(p,R,U,b))}else p.worker?(Pf(p),A3(p,u)):ua=ua.filter(x=>x!=p)}}function A3(l,u){const{config:c}=u,{terminateWorkerTimeout:f}=c;Number.isFinite(f)&&f>=0&&(l.terminated?l.terminated=!1:l.terminateTimeout=setTimeout(async()=>{ua=ua.filter(r=>r!=l);try{await l.terminate()}catch{}},f))}function Pf(l){const{terminateTimeout:u}=l;u&&(clearTimeout(u),l.terminateTimeout=null)}async function v3(){await Promise.allSettled(ua.map(l=>(Pf(l),l.terminate())))}const rh="HTTP error ",Hi="HTTP Range not supported",oh="Writer iterator completed too soon",dh="Writer not initialized",y3="text/plain",E3="Content-Length",p3="Content-Range",b3="Accept-Ranges",x3="Range",S3="Content-Type",T3="HEAD",Ar="GET",hh="bytes",C3=64*1024,vr="writable";class dc{constructor(){this.size=0}init(){this.initialized=!0}}class fa extends dc{get readable(){const u=this,{chunkSize:c=C3}=u,f=new ReadableStream({start(){this.chunkOffset=0},async pull(r){const{offset:o=0,size:h,diskNumberStart:v}=f,{chunkOffset:y}=this,A=h===Jt?c:Math.min(c,h-y),E=await Pt(u,o+y,A,v);r.enqueue(E),y+c>h||h===Jt&&!E.length&&A?r.close():this.chunkOffset+=c}});return f}}class yr extends dc{constructor(){super();const u=this,c=new WritableStream({write(f){if(!u.initialized)throw new Error(dh);return u.writeUint8Array(f)}});Object.defineProperty(u,vr,{get(){return c}})}writeUint8Array(){}}class O3 extends fa{constructor(u){super();let c=u.length;for(;u.charAt(c-1)=="=";)c--;const f=u.indexOf(",")+1;Object.assign(this,{dataURI:u,dataStart:f,size:Math.floor((c-f)*.75)})}readUint8Array(u,c){const{dataStart:f,dataURI:r}=this,o=new Uint8Array(c),h=Math.floor(u/3)*4,v=atob(r.substring(h+f,Math.ceil((u+c)/3)*4+f)),y=u-Math.floor(h/4)*3;let A=0;for(let E=y;E<y+c&&E<v.length;E++)o[E-y]=v.charCodeAt(E),A++;return A<o.length?o.subarray(0,A):o}}class w3 extends yr{constructor(u){super(),Object.assign(this,{data:"data:"+(u||"")+";base64,",pending:[]})}writeUint8Array(u){const c=this;let f=0,r=c.pending;const o=c.pending.length;for(c.pending="",f=0;f<Math.floor((o+u.length)/3)*3-o;f++)r+=String.fromCharCode(u[f]);for(;f<u.length;f++)c.pending+=String.fromCharCode(u[f]);r.length&&(r.length>2?c.data+=btoa(r):c.pending+=r)}getData(){return this.data+btoa(this.pending)}}class Er extends fa{constructor(u){super(),Object.assign(this,{blob:u,size:u.size})}async readUint8Array(u,c){const f=this,r=u+c;let h=await(u||r<f.size?f.blob.slice(u,r):f.blob).arrayBuffer();return h.byteLength>c&&(h=h.slice(u,r)),new Uint8Array(h)}}class mh extends dc{constructor(u){super();const c=this,f=new TransformStream,r=[];u&&r.push([S3,u]),Object.defineProperty(c,vr,{get(){return f.writable}}),c.blob=new Response(f.readable,{headers:r}).blob()}getData(){return this.blob}}class R3 extends Er{constructor(u){super(new Blob([u],{type:y3}))}}class D3 extends mh{constructor(u){super(u),Object.assign(this,{encoding:u,utf8:!u||u.toLowerCase()=="utf-8"})}async getData(){const{encoding:u,utf8:c}=this,f=await super.getData();if(f.text&&c)return f.text();{const r=new FileReader;return new Promise((o,h)=>{Object.assign(r,{onload:({target:v})=>o(v.result),onerror:()=>h(r.error)}),r.readAsText(f,u)})}}}class M3 extends fa{constructor(u,c){super(),gh(this,u,c)}async init(){await Ah(this,$f,v2),super.init()}readUint8Array(u,c){return vh(this,u,c,$f,v2)}}class j3 extends fa{constructor(u,c){super(),gh(this,u,c)}async init(){await Ah(this,tr,y2),super.init()}readUint8Array(u,c){return vh(this,u,c,tr,y2)}}function gh(l,u,c){const{preventHeadRequest:f,useRangeHeader:r,forceRangeRequests:o,combineSizeEocd:h}=c;c=Object.assign({},c),delete c.preventHeadRequest,delete c.useRangeHeader,delete c.forceRangeRequests,delete c.combineSizeEocd,delete c.useXHR,Object.assign(l,{url:u,options:c,preventHeadRequest:f,useRangeHeader:r,forceRangeRequests:o,combineSizeEocd:h})}async function Ah(l,u,c){const{url:f,preventHeadRequest:r,useRangeHeader:o,forceRangeRequests:h,combineSizeEocd:v}=l;if(U3(f)&&(o||h)&&(typeof r>"u"||r)){const y=await u(Ar,l,yh(l,v?-pn:void 0));if(!h&&y.headers.get(b3)!=hh)throw new Error(Hi);{v&&(l.eocdCache=new Uint8Array(await y.arrayBuffer()));let A;const E=y.headers.get(p3);if(E){const S=E.trim().split(/\s*\/\s*/);if(S.length){const O=S[1];O&&O!="*"&&(A=Number(O))}}A===Jt?await E2(l,u,c):l.size=A}}else await E2(l,u,c)}async function vh(l,u,c,f,r){const{useRangeHeader:o,forceRangeRequests:h,eocdCache:v,size:y,options:A}=l;if(o||h){if(v&&u==y-pn&&c==pn)return v;if(u>=y)return new Uint8Array;{u+c>y&&(c=y-u);const E=await f(Ar,l,yh(l,u,c));if(E.status!=206)throw new Error(Hi);return new Uint8Array(await E.arrayBuffer())}}else{const{data:E}=l;return E||await r(l,A),new Uint8Array(l.data.subarray(u,u+c))}}function yh(l,u=0,c=1){return Object.assign({},pr(l),{[x3]:hh+"="+(u<0?u:u+"-"+(u+c-1))})}function pr({options:l}){const{headers:u}=l;if(u)return Symbol.iterator in u?Object.fromEntries(u):u}async function v2(l){await Eh(l,$f)}async function y2(l){await Eh(l,tr)}async function Eh(l,u){const c=await u(Ar,l,pr(l));l.data=new Uint8Array(await c.arrayBuffer()),l.size||(l.size=l.data.length)}async function E2(l,u,c){if(l.preventHeadRequest)await c(l,l.options);else{const r=(await u(T3,l,pr(l))).headers.get(E3);r?l.size=Number(r):await c(l,l.options)}}async function $f(l,{options:u,url:c},f){const r=await fetch(c,Object.assign({},u,{method:l,headers:f}));if(r.status<400)return r;throw r.status==416?new Error(Hi):new Error(rh+(r.statusText||r.status))}function tr(l,{url:u},c){return new Promise((f,r)=>{const o=new XMLHttpRequest;if(o.addEventListener("load",()=>{if(o.status<400){const h=[];o.getAllResponseHeaders().trim().split(/[\r\n]+/).forEach(v=>{const y=v.trim().split(/\s*:\s*/);y[0]=y[0].trim().replace(/^[a-z]|-[a-z]/g,A=>A.toUpperCase()),h.push(y)}),f({status:o.status,arrayBuffer:()=>o.response,headers:new Map(h)})}else r(o.status==416?new Error(Hi):new Error(rh+(o.statusText||o.status)))},!1),o.addEventListener("error",h=>r(h.detail?h.detail.error:new Error("Network error")),!1),o.open(l,u),c)for(const h of Object.entries(c))o.setRequestHeader(h[0],h[1]);o.responseType="arraybuffer",o.send()})}class ph extends fa{constructor(u,c={}){super(),Object.assign(this,{url:u,reader:c.useXHR?new j3(u,c):new M3(u,c)})}set size(u){}get size(){return this.reader.size}async init(){await this.reader.init(),super.init()}readUint8Array(u,c){return this.reader.readUint8Array(u,c)}}class H3 extends ph{constructor(u,c={}){c.useRangeHeader=!0,super(u,c)}}class N3 extends fa{constructor(u){super(),u=new Uint8Array(u.buffer,u.byteOffset,u.byteLength),Object.assign(this,{array:u,size:u.length})}readUint8Array(u,c){return this.array.slice(u,u+c)}}class B3 extends yr{init(u=0){Object.assign(this,{offset:0,array:new Uint8Array(u)}),super.init()}writeUint8Array(u){const c=this;if(c.offset+u.length>c.array.length){const f=c.array;c.array=new Uint8Array(f.length+u.length),c.array.set(f)}c.array.set(u,c.offset),c.offset+=u.length}getData(){return this.array}}class br extends fa{constructor(u){super(),this.readers=u}async init(){const u=this,{readers:c}=u;u.lastDiskNumber=0,u.lastDiskOffset=0,await Promise.all(c.map(async(f,r)=>{await f.init(),r!=c.length-1&&(u.lastDiskOffset+=f.size),u.size+=f.size})),super.init()}async readUint8Array(u,c,f=0){const r=this,{readers:o}=this;let h,v=f;v==-1&&(v=o.length-1);let y=u;for(;o[v]&&y>=o[v].size;)y-=o[v].size,v++;const A=o[v];if(A){const E=A.size;if(y+c<=E)h=await Pt(A,y,c);else{const S=E-y;h=new Uint8Array(c);const O=await Pt(A,y,S);h.set(O,0);const X=await r.readUint8Array(u+S,c-S,f);h.set(X,S),O.length+X.length<c&&(h=h.subarray(0,O.length+X.length))}}else h=new Uint8Array;return r.lastDiskNumber=Math.max(v,r.lastDiskNumber),h}}class fc extends dc{constructor(u,c=4294967295){super();const f=this;Object.assign(f,{diskNumber:0,diskOffset:0,size:0,maxSize:c,availableSize:c});let r,o,h;const v=new WritableStream({async write(E){const{availableSize:S}=f;if(h)E.length>=S?(await y(E.subarray(0,S)),await A(),f.diskOffset+=r.size,f.diskNumber++,h=null,await this.write(E.subarray(S))):await y(E);else{const{value:O,done:X}=await u.next();if(X&&!O)throw new Error(oh);r=O,r.size=0,r.maxSize&&(f.maxSize=r.maxSize),f.availableSize=f.maxSize,await Ri(r),o=O.writable,h=o.getWriter(),await this.write(E)}},async close(){await h.ready,await A()}});Object.defineProperty(f,vr,{get(){return v}});async function y(E){const S=E.length;S&&(await h.ready,await h.write(E),r.size+=S,f.size+=S,f.availableSize-=S)}async function A(){await h.close()}}}class bh{constructor(u){return Array.isArray(u)&&(u=new br(u)),u instanceof ReadableStream&&(u={readable:u}),u}}class xh{constructor(u){return u.writable===Jt&&typeof u.next==Mi&&(u=new fc(u)),u instanceof WritableStream&&(u={writable:u}),u.size===Jt&&(u.size=0),u instanceof fc||Object.assign(u,{diskNumber:0,diskOffset:0,availableSize:1/0,maxSize:1/0}),u}}function U3(l){const{baseURL:u}=Z2(),{protocol:c}=new URL(l,u);return c=="http:"||c=="https:"}async function Ri(l,u){if(l.init&&!l.initialized)await l.init(u);else return Promise.resolve()}function Pt(l,u,c,f){return l.readUint8Array(u,c,f)}const Q3=br,z3=fc,Sh="\0☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼ !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~⌂ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ ".split(""),Y3=Sh.length==256;function L3(l){if(Y3){let u="";for(let c=0;c<l.length;c++)u+=Sh[l[c]];return u}else return new TextDecoder().decode(l)}function ic(l,u){return u&&u.trim().toLowerCase()=="cp437"?L3(l):new TextDecoder(u).decode(l)}const Th="filename",Ch="rawFilename",Oh="comment",wh="rawComment",Rh="uncompressedSize",Dh="compressedSize",Mh="offset",er="diskNumberStart",nr="lastModDate",ar="rawLastModDate",jh="lastAccessDate",G3="rawLastAccessDate",Hh="creationDate",X3="rawCreationDate",V3="internalFileAttribute",Z3="internalFileAttributes",q3="externalFileAttribute",I3="externalFileAttributes",K3="msDosCompatible",k3="zip64",J3="encrypted",F3="version",W3="versionMadeBy",_3="zipCrypto",P3="directory",$3="executable",t5="compressionMethod",e5="signature",n5="extraField",a5=[Th,Ch,Dh,Rh,nr,ar,Oh,wh,jh,Hh,Mh,er,er,V3,Z3,q3,I3,K3,k3,J3,F3,W3,_3,P3,$3,t5,e5,n5,"bitFlag","filenameUTF8","commentUTF8","rawExtraField","extraFieldZip64","extraFieldUnicodePath","extraFieldUnicodeComment","extraFieldAES","extraFieldNTFS","extraFieldExtendedTimestamp"];class p2{constructor(u){a5.forEach(c=>this[c]=u[c])}}const l5="filenameEncoding",i5="commentEncoding",u5="decodeText",c5="extractPrependedData",s5="extractAppendedData",f5="password",r5="rawPassword",o5="passThrough",d5="signal",h5="checkPasswordOnly",m5="checkOverlappingEntryOnly",g5="checkOverlappingEntry",A5="checkSignature",v5="useWebWorkers",y5="useCompressionStream",E5="transferStreams",p5="preventClose",uc="File format is not recognized",Nh="End of central directory not found",Bh="End of Zip64 central directory locator not found",Uh="Central directory header not found",Qh="Local file header not found",zh="Zip64 extra field not found",Yh="File contains encrypted entry",Lh="Encryption method not supported",lr="Compression method not supported",ir="Split zip file",Gh="Overlapping entry found",b2="utf-8",x2="cp437",b5=[[Rh,ja],[Dh,ja],[Mh,ja],[er,la]],x5={[la]:{getValue:Bt,bytes:4},[ja]:{getValue:Tl,bytes:8}};class Xh{constructor(u,c={}){Object.assign(this,{reader:new bh(u),options:c,config:Z2(),readRanges:[]})}async*getEntriesGenerator(u={}){const c=this;let{reader:f}=c;const{config:r}=c;if(await Ri(f),(f.size===Jt||!f.readUint8Array)&&(f=new Er(await new Response(f.readable).blob()),await Ri(f)),f.size<pn)throw new Error(uc);f.chunkSize=M8(r);const o=await M5(f,f8,f.size,pn,la*16);if(!o){const J=await Pt(f,0,4),k=Yt(J);throw Bt(k)==X2?new Error(ir):new Error(Nh)}const h=Yt(o);let v=Bt(h,12),y=Bt(h,16);const A=o.offset,E=$t(h,20),S=A+pn+E;let O=$t(h,4);const X=f.lastDiskNumber||0;let B=$t(h,6),b=$t(h,8),p=0,x=0;if(y==ja||v==ja||b==la||B==la){const J=await Pt(f,o.offset-Bf,Bf),k=Yt(J);if(Bt(k,0)==r8){y=Tl(k,8);let nt=await Pt(f,y,Uf,-1),P=Yt(nt);const st=o.offset-Bf-Uf;if(Bt(P,0)!=P1&&y!=st){const it=y;y=st,y>it&&(p=y-it),nt=await Pt(f,y,Uf,-1),P=Yt(nt)}if(Bt(P,0)!=P1)throw new Error(Bh);O==la&&(O=Bt(P,16)),B==la&&(B=Bt(P,20)),b==la&&(b=Tl(P,32)),v==ja&&(v=Tl(P,40)),y-=v}}if(y>=f.size&&(p=f.size-y-v-pn,y=f.size-v-pn),X!=O)throw new Error(ir);if(y<0)throw new Error(uc);let R=0,U=await Pt(f,y,v,B),Z=Yt(U);if(v){const J=o.offset-v;if(Bt(Z,R)!=_1&&y!=J){const k=y;y=J,y>k&&(p+=y-k),U=await Pt(f,y,v,B),Z=Yt(U)}}const F=o.offset-y-(f.lastDiskOffset||0);if(v!=F&&F>=0&&(v=F,U=await Pt(f,y,v,B),Z=Yt(U)),y<0||y>=f.size)throw new Error(uc);const j=ie(c,u,l5),D=ie(c,u,i5);for(let J=0;J<b;J++){const k=new T5(f,r,c.options);if(Bt(Z,R)!=_1)throw new Error(Uh);Vh(k,Z,R+6);const nt=!!k.bitFlag.languageEncodingFlag,P=R+46,st=P+k.filenameLength,it=st+k.extraFieldLength,H=$t(Z,R+4),_=H>>8==0,$=H>>8==3,ht=U.subarray(P,st),tt=$t(Z,R+32),C=it+tt,L=U.subarray(it,C),W=nt,et=nt,rt=Bt(Z,R+38),ot=_&&(Sl(Z,R+38)&a2)==a2||$&&(rt>>16&x8)==S8||ht.length&&ht.at(-1)==l2.charCodeAt(0),gt=$&&(rt>>16&T8)!=0,Ft=Bt(Z,R+42)+p;Object.assign(k,{versionMadeBy:H,msDosCompatible:_,compressedSize:0,uncompressedSize:0,commentLength:tt,directory:ot,offset:Ft,diskNumberStart:$t(Z,R+34),internalFileAttributes:$t(Z,R+36),externalFileAttributes:rt,rawFilename:ht,filenameUTF8:W,commentUTF8:et,rawExtraField:U.subarray(st,it),executable:gt}),k.internalFileAttribute=k.internalFileAttributes,k.externalFileAttribute=k.externalFileAttributes;const Qt=ie(c,u,u5)||ic,On=W?b2:j||x2,ra=et?b2:D||x2;let wn=Qt(ht,On);wn===Jt&&(wn=ic(ht,On));let Ba=Qt(L,ra);Ba===Jt&&(Ba=ic(L,ra)),Object.assign(k,{rawComment:L,filename:wn,comment:Ba,directory:ot||wn.endsWith(l2)}),x=Math.max(Ft,x),Zh(k,k,Z,R+6),k.zipCrypto=k.encrypted&&!k.extraFieldAES;const Ee=new p2(k);Ee.getData=(Rn,Qa)=>k.getData(Rn,Ee,c.readRanges,Qa),Ee.arrayBuffer=async Rn=>{const Qa=new TransformStream,[Bi]=await Promise.all([new Response(Qa.readable).arrayBuffer(),k.getData(Qa,Ee,c.readRanges,Rn)]);return Bi},R=C;const{onprogress:Ua}=u;if(Ua)try{await Ua(J+1,b,new p2(k))}catch{}yield Ee}const N=ie(c,u,c5),K=ie(c,u,s5);return N&&(c.prependedData=x>0?await Pt(f,0,x):new Uint8Array),c.comment=E?await Pt(f,A+pn,E):new Uint8Array,K&&(c.appendedData=S<f.size?await Pt(f,S,f.size-S):new Uint8Array),!0}async getEntries(u={}){const c=[];for await(const f of this.getEntriesGenerator(u))c.push(f);return c}async close(){}}class S5{constructor(u={}){const{readable:c,writable:f}=new TransformStream,r=new Xh(c,u).getEntriesGenerator();this.readable=new ReadableStream({async 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D5({reader:h,fileEntry:c,offset:v,diskNumberStart:y,signature:B,compressedSize:x,uncompressedSize:p,dataOffset:it,dataDescriptor:R||U.bitFlag.dataDescriptor,extraFieldZip64:E||U.extraFieldZip64,readRanges:f});let ot;try{if(!C){ht&&(u=new WritableStream),u=new xh(u),await Ri(u,N?x:p),{writable:ot}=u;const{outputSize:gt}=await g3({readable:_,writable:ot},rt);if(u.size+=gt,gt!=(N?x:p))throw new Error(gr)}}catch(gt){if(gt.outputSize!==Jt&&(u.size+=gt.outputSize),!ht||gt.message!=dr)throw gt}finally{!ie(o,r,p5)&&ot&&!ot.locked&&await ot.getWriter().close()}return ht||C?Jt:u.getData?u.getData():ot}}function Vh(l,u,c){const f=l.rawBitFlag=$t(u,c+2),r=(f&t2)==t2,o=Bt(u,c+6);Object.assign(l,{encrypted:r,version:$t(u,c),bitFlag:{level:(f&b8)>>1,dataDescriptor:(f&e2)==e2,languageEncodingFlag:(f&n2)==n2},rawLastModDate:o,lastModDate:j5(o),filenameLength:$t(u,c+22),extraFieldLength:$t(u,c+24)})}function Zh(l,u,c,f,r){const{rawExtraField:o}=u,h=u.extraField=new Map,v=Yt(new Uint8Array(o));let 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y=Bt(o,1);Object.assign(l,{version:Sl(o,0),[u]:ic(l.data.subarray(5)),valid:!r.bitFlag.languageEncodingFlag&&y==Bt(v,0)}),l.valid&&(f[u]=l[u],f[u+"UTF8"]=!0)}function O5(l,u,c){const f=Yt(l.data),r=Sl(f,4);Object.assign(l,{vendorVersion:Sl(f,0),vendorId:Sl(f,2),strength:r,originalCompressionMethod:c,compressionMethod:$t(f,5)}),u.compressionMethod=l.compressionMethod}function w5(l,u){const c=Yt(l.data);let f=4,r;try{for(;f<l.data.length&&!r;){const o=$t(c,f),h=$t(c,f+2);o==A8&&(r=l.data.slice(f+4,f+4+h)),f+=4+h}}catch{}try{if(r&&r.length==24){const o=Yt(r),h=o.getBigUint64(0,!0),v=o.getBigUint64(8,!0),y=o.getBigUint64(16,!0);Object.assign(l,{rawLastModDate:h,rawLastAccessDate:v,rawCreationDate:y});const A=Gf(h),E=Gf(v),S=Gf(y),O={lastModDate:A,lastAccessDate:E,creationDate:S};Object.assign(l,O),Object.assign(u,O)}}catch{}}function R5(l,u,c){const 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Xf={exports:{}},dt={};/**
+ * @license React
+ * react.production.js
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */var T2;function B5(){if(T2)return dt;T2=1;var l=Symbol.for("react.transitional.element"),u=Symbol.for("react.portal"),c=Symbol.for("react.fragment"),f=Symbol.for("react.strict_mode"),r=Symbol.for("react.profiler"),o=Symbol.for("react.consumer"),h=Symbol.for("react.context"),v=Symbol.for("react.forward_ref"),y=Symbol.for("react.suspense"),A=Symbol.for("react.memo"),E=Symbol.for("react.lazy"),S=Symbol.for("react.activity"),O=Symbol.iterator;function X(C){return C===null||typeof C!="object"?null:(C=O&&C[O]||C["@@iterator"],typeof C=="function"?C:null)}var B={isMounted:function(){return!1},enqueueForceUpdate:function(){},enqueueReplaceState:function(){},enqueueSetState:function(){}},b=Object.assign,p={};function x(C,L,W){this.props=C,this.context=L,this.refs=p,this.updater=W||B}x.prototype.isReactComponent={},x.prototype.setState=function(C,L){if(typeof C!="object"&&typeof C!="function"&&C!=null)throw Error("takes an object of state variables to update or a function which returns an object of state variables.");this.updater.enqueueSetState(this,C,L,"setState")},x.prototype.forceUpdate=function(C){this.updater.enqueueForceUpdate(this,C,"forceUpdate")};function R(){}R.prototype=x.prototype;function U(C,L,W){this.props=C,this.context=L,this.refs=p,this.updater=W||B}var Z=U.prototype=new R;Z.constructor=U,b(Z,x.prototype),Z.isPureReactComponent=!0;var F=Array.isArray;function j(){}var D={H:null,A:null,T:null,S:null},N=Object.prototype.hasOwnProperty;function K(C,L,W){var et=W.ref;return{$$typeof:l,type:C,key:L,ref:et!==void 0?et:null,props:W}}function J(C,L){return K(C.type,L,C.props)}function k(C){return typeof C=="object"&&C!==null&&C.$$typeof===l}function nt(C){var L={"=":"=0",":":"=2"};return"$"+C.replace(/[=:]/g,function(W){return L[W]})}var P=/\/+/g;function st(C,L){return typeof C=="object"&&C!==null&&C.key!=null?nt(""+C.key):L.toString(36)}function it(C){switch(C.status){case"fulfilled":return C.value;case"rejected":throw C.reason;default:switch(typeof C.status=="string"?C.then(j,j):(C.status="pending",C.then(function(L){C.status==="pending"&&(C.status="fulfilled",C.value=L)},function(L){C.status==="pending"&&(C.status="rejected",C.reason=L)})),C.status){case"fulfilled":return C.value;case"rejected":throw C.reason}}throw C}function H(C,L,W,et,rt){var ot=typeof C;(ot==="undefined"||ot==="boolean")&&(C=null);var gt=!1;if(C===null)gt=!0;else switch(ot){case"bigint":case"string":case"number":gt=!0;break;case"object":switch(C.$$typeof){case l:case u:gt=!0;break;case E:return gt=C._init,H(gt(C._payload),L,W,et,rt)}}if(gt)return rt=rt(C),gt=et===""?"."+st(C,0):et,F(rt)?(W="",gt!=null&&(W=gt.replace(P,"$&/")+"/"),H(rt,L,W,"",function(On){return On})):rt!=null&&(k(rt)&&(rt=J(rt,W+(rt.key==null||C&&C.key===rt.key?"":(""+rt.key).replace(P,"$&/")+"/")+gt)),L.push(rt)),1;gt=0;var Ft=et===""?".":et+":";if(F(C))for(var Qt=0;Qt<C.length;Qt++)et=C[Qt],ot=Ft+st(et,Qt),gt+=H(et,L,W,ot,rt);else if(Qt=X(C),typeof Qt=="function")for(C=Qt.call(C),Qt=0;!(et=C.next()).done;)et=et.value,ot=Ft+st(et,Qt++),gt+=H(et,L,W,ot,rt);else if(ot==="object"){if(typeof C.then=="function")return H(it(C),L,W,et,rt);throw L=String(C),Error("Objects are not valid as a React child (found: "+(L==="[object Object]"?"object with keys {"+Object.keys(C).join(", ")+"}":L)+"). 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+ * @license React
+ * react-dom-client.production.js
+ *
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
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rgba(240,246,252,.1);--color-diffstat-addition-border: rgba(240,246,252,.1);--color-diffstat-addition-bg: #3fb950;--color-search-keyword-hl: rgba(210,153,34,.4);--color-prettylights-syntax-comment: #8b949e;--color-prettylights-syntax-constant: #79c0ff;--color-prettylights-syntax-entity: #d2a8ff;--color-prettylights-syntax-storage-modifier-import: #c9d1d9;--color-prettylights-syntax-entity-tag: #7ee787;--color-prettylights-syntax-keyword: #ff7b72;--color-prettylights-syntax-string: #a5d6ff;--color-prettylights-syntax-variable: #ffa657;--color-prettylights-syntax-brackethighlighter-unmatched: #f85149;--color-prettylights-syntax-invalid-illegal-text: #f0f6fc;--color-prettylights-syntax-invalid-illegal-bg: #8e1519;--color-prettylights-syntax-carriage-return-text: #f0f6fc;--color-prettylights-syntax-carriage-return-bg: #b62324;--color-prettylights-syntax-string-regexp: #7ee787;--color-prettylights-syntax-markup-list: #f2cc60;--color-prettylights-syntax-markup-heading: #1f6feb;--color-prettylights-syntax-markup-italic: #c9d1d9;--color-prettylights-syntax-markup-bold: #c9d1d9;--color-prettylights-syntax-markup-deleted-text: #ffdcd7;--color-prettylights-syntax-markup-deleted-bg: #67060c;--color-prettylights-syntax-markup-inserted-text: #aff5b4;--color-prettylights-syntax-markup-inserted-bg: #033a16;--color-prettylights-syntax-markup-changed-text: #ffdfb6;--color-prettylights-syntax-markup-changed-bg: #5a1e02;--color-prettylights-syntax-markup-ignored-text: #c9d1d9;--color-prettylights-syntax-markup-ignored-bg: #1158c7;--color-prettylights-syntax-meta-diff-range: #d2a8ff;--color-prettylights-syntax-brackethighlighter-angle: #8b949e;--color-prettylights-syntax-sublimelinter-gutter-mark: #484f58;--color-prettylights-syntax-constant-other-reference-link: #a5d6ff;--color-codemirror-text: #c9d1d9;--color-codemirror-bg: #0d1117;--color-codemirror-gutters-bg: #0d1117;--color-codemirror-guttermarker-text: #0d1117;--color-codemirror-guttermarker-subtle-text: #484f58;--color-codemirror-linenumber-text: #8b949e;--color-codemirror-cursor: #c9d1d9;--color-codemirror-selection-bg: rgba(56,139,253,.4);--color-codemirror-activeline-bg: rgba(110,118,129,.1);--color-codemirror-matchingbracket-text: #c9d1d9;--color-codemirror-lines-bg: #0d1117;--color-codemirror-syntax-comment: #8b949e;--color-codemirror-syntax-constant: #79c0ff;--color-codemirror-syntax-entity: #d2a8ff;--color-codemirror-syntax-keyword: #ff7b72;--color-codemirror-syntax-storage: #ff7b72;--color-codemirror-syntax-string: #a5d6ff;--color-codemirror-syntax-support: #79c0ff;--color-codemirror-syntax-variable: #ffa657;--color-checks-bg: #010409;--color-checks-run-border-width: 1px;--color-checks-container-border-width: 1px;--color-checks-text-primary: #c9d1d9;--color-checks-text-secondary: #8b949e;--color-checks-text-link: #58a6ff;--color-checks-btn-icon: #8b949e;--color-checks-btn-hover-icon: #c9d1d9;--color-checks-btn-hover-bg: rgba(110,118,129,.1);--color-checks-input-text: #8b949e;--color-checks-input-placeholder-text: #484f58;--color-checks-input-focus-text: #c9d1d9;--color-checks-input-bg: #161b22;--color-checks-input-shadow: none;--color-checks-donut-error: #f85149;--color-checks-donut-pending: #d29922;--color-checks-donut-success: #2ea043;--color-checks-donut-neutral: #8b949e;--color-checks-dropdown-text: #c9d1d9;--color-checks-dropdown-bg: #161b22;--color-checks-dropdown-border: #30363d;--color-checks-dropdown-shadow: rgba(1,4,9,.3);--color-checks-dropdown-hover-text: #c9d1d9;--color-checks-dropdown-hover-bg: rgba(110,118,129,.1);--color-checks-dropdown-btn-hover-text: #c9d1d9;--color-checks-dropdown-btn-hover-bg: rgba(110,118,129,.1);--color-checks-scrollbar-thumb-bg: rgba(110,118,129,.4);--color-checks-header-label-text: #8b949e;--color-checks-header-label-open-text: #c9d1d9;--color-checks-header-border: #21262d;--color-checks-header-icon: #8b949e;--color-checks-line-text: #8b949e;--color-checks-line-num-text: #484f58;--color-checks-line-timestamp-text: #484f58;--color-checks-line-hover-bg: rgba(110,118,129,.1);--color-checks-line-selected-bg: rgba(56,139,253,.15);--color-checks-line-selected-num-text: #58a6ff;--color-checks-line-dt-fm-text: #f0f6fc;--color-checks-line-dt-fm-bg: #9e6a03;--color-checks-gate-bg: rgba(187,128,9,.15);--color-checks-gate-text: #8b949e;--color-checks-gate-waiting-text: #d29922;--color-checks-step-header-open-bg: #161b22;--color-checks-step-error-text: #f85149;--color-checks-step-warning-text: #d29922;--color-checks-logline-text: #8b949e;--color-checks-logline-num-text: #484f58;--color-checks-logline-debug-text: #a371f7;--color-checks-logline-error-text: #8b949e;--color-checks-logline-error-num-text: #484f58;--color-checks-logline-error-bg: rgba(248,81,73,.15);--color-checks-logline-warning-text: #8b949e;--color-checks-logline-warning-num-text: #d29922;--color-checks-logline-warning-bg: rgba(187,128,9,.15);--color-checks-logline-command-text: #58a6ff;--color-checks-logline-section-text: #3fb950;--color-checks-ansi-black: #0d1117;--color-checks-ansi-black-bright: #161b22;--color-checks-ansi-white: #b1bac4;--color-checks-ansi-white-bright: #b1bac4;--color-checks-ansi-gray: #6e7681;--color-checks-ansi-red: #ff7b72;--color-checks-ansi-red-bright: #ffa198;--color-checks-ansi-green: #3fb950;--color-checks-ansi-green-bright: #56d364;--color-checks-ansi-yellow: #d29922;--color-checks-ansi-yellow-bright: #e3b341;--color-checks-ansi-blue: #58a6ff;--color-checks-ansi-blue-bright: #79c0ff;--color-checks-ansi-magenta: #bc8cff;--color-checks-ansi-magenta-bright: #d2a8ff;--color-checks-ansi-cyan: #76e3ea;--color-checks-ansi-cyan-bright: #b3f0ff;--color-project-header-bg: #0d1117;--color-project-sidebar-bg: #161b22;--color-project-gradient-in: #161b22;--color-project-gradient-out: rgba(22,27,34,0);--color-mktg-success: rgba(41,147,61,1);--color-mktg-info: rgba(42,123,243,1);--color-mktg-bg-shade-gradient-top: rgba(1,4,9,.065);--color-mktg-bg-shade-gradient-bottom: rgba(1,4,9,0);--color-mktg-btn-bg-top: hsla(228,82%,66%,1);--color-mktg-btn-bg-bottom: #4969ed;--color-mktg-btn-bg-overlay-top: hsla(228,74%,59%,1);--color-mktg-btn-bg-overlay-bottom: #3355e0;--color-mktg-btn-text: #f0f6fc;--color-mktg-btn-primary-bg-top: hsla(137,56%,46%,1);--color-mktg-btn-primary-bg-bottom: #2ea44f;--color-mktg-btn-primary-bg-overlay-top: hsla(134,60%,38%,1);--color-mktg-btn-primary-bg-overlay-bottom: #22863a;--color-mktg-btn-primary-text: #f0f6fc;--color-mktg-btn-enterprise-bg-top: hsla(249,100%,72%,1);--color-mktg-btn-enterprise-bg-bottom: #6f57ff;--color-mktg-btn-enterprise-bg-overlay-top: hsla(248,65%,63%,1);--color-mktg-btn-enterprise-bg-overlay-bottom: #614eda;--color-mktg-btn-enterprise-text: #f0f6fc;--color-mktg-btn-outline-text: #f0f6fc;--color-mktg-btn-outline-border: rgba(240,246,252,.3);--color-mktg-btn-outline-hover-text: #f0f6fc;--color-mktg-btn-outline-hover-border: rgba(240,246,252,.5);--color-mktg-btn-outline-focus-border: #f0f6fc;--color-mktg-btn-outline-focus-border-inset: rgba(240,246,252,.5);--color-mktg-btn-dark-text: #f0f6fc;--color-mktg-btn-dark-border: rgba(240,246,252,.3);--color-mktg-btn-dark-hover-text: #f0f6fc;--color-mktg-btn-dark-hover-border: rgba(240,246,252,.5);--color-mktg-btn-dark-focus-border: #f0f6fc;--color-mktg-btn-dark-focus-border-inset: rgba(240,246,252,.5);--color-avatar-bg: rgba(240,246,252,.1);--color-avatar-border: rgba(240,246,252,.1);--color-avatar-stack-fade: #30363d;--color-avatar-stack-fade-more: #21262d;--color-avatar-child-shadow: -2px -2px 0 #0d1117;--color-topic-tag-border: rgba(0,0,0,0);--color-select-menu-backdrop-border: #484f58;--color-select-menu-tap-highlight: rgba(48,54,61,.5);--color-select-menu-tap-focus-bg: #0c2d6b;--color-overlay-shadow: 0 0 0 1px #30363d, 0 16px 32px rgba(1,4,9,.85);--color-header-text: rgba(240,246,252,.7);--color-header-bg: #161b22;--color-header-logo: #f0f6fc;--color-header-search-bg: #0d1117;--color-header-search-border: #30363d;--color-sidenav-selected-bg: #21262d;--color-menu-bg-active: #161b22;--color-control-transparent-bg-hover: #656c7633;--color-input-disabled-bg: rgba(110,118,129,0);--color-timeline-badge-bg: #21262d;--color-ansi-black: #484f58;--color-ansi-black-bright: #6e7681;--color-ansi-white: #b1bac4;--color-ansi-white-bright: #f0f6fc;--color-ansi-gray: #6e7681;--color-ansi-red: #ff7b72;--color-ansi-red-bright: #ffa198;--color-ansi-green: #3fb950;--color-ansi-green-bright: #56d364;--color-ansi-yellow: #d29922;--color-ansi-yellow-bright: #e3b341;--color-ansi-blue: #58a6ff;--color-ansi-blue-bright: #79c0ff;--color-ansi-magenta: #bc8cff;--color-ansi-magenta-bright: #d2a8ff;--color-ansi-cyan: #39c5cf;--color-ansi-cyan-bright: #56d4dd;--color-btn-text: #c9d1d9;--color-btn-bg: #21262d;--color-btn-border: rgba(240,246,252,.1);--color-btn-shadow: 0 0 transparent;--color-btn-inset-shadow: 0 0 transparent;--color-btn-hover-bg: #30363d;--color-btn-hover-border: #8b949e;--color-btn-active-bg: hsla(212,12%,18%,1);--color-btn-active-border: #6e7681;--color-btn-selected-bg: #161b22;--color-btn-focus-bg: #21262d;--color-btn-focus-border: #8b949e;--color-btn-focus-shadow: 0 0 0 3px rgba(139,148,158,.3);--color-btn-shadow-active: inset 0 .15em .3em rgba(1,4,9,.15);--color-btn-shadow-input-focus: 0 0 0 .2em rgba(31,111,235,.3);--color-btn-counter-bg: #30363d;--color-btn-primary-text: #ffffff;--color-btn-primary-bg: #238636;--color-btn-primary-border: rgba(240,246,252,.1);--color-btn-primary-shadow: 0 0 transparent;--color-btn-primary-inset-shadow: 0 0 transparent;--color-btn-primary-hover-bg: #2ea043;--color-btn-primary-hover-border: rgba(240,246,252,.1);--color-btn-primary-selected-bg: #238636;--color-btn-primary-selected-shadow: 0 0 transparent;--color-btn-primary-disabled-text: rgba(240,246,252,.5);--color-btn-primary-disabled-bg: rgba(35,134,54,.6);--color-btn-primary-disabled-border: rgba(240,246,252,.1);--color-btn-primary-focus-bg: #238636;--color-btn-primary-focus-border: rgba(240,246,252,.1);--color-btn-primary-focus-shadow: 0 0 0 3px rgba(46,164,79,.4);--color-btn-primary-icon: #f0f6fc;--color-btn-primary-counter-bg: rgba(240,246,252,.2);--color-btn-outline-text: #58a6ff;--color-btn-outline-hover-text: #58a6ff;--color-btn-outline-hover-bg: #30363d;--color-btn-outline-hover-border: rgba(240,246,252,.1);--color-btn-outline-hover-shadow: 0 1px 0 rgba(1,4,9,.1);--color-btn-outline-hover-inset-shadow: inset 0 1px 0 rgba(240,246,252,.03);--color-btn-outline-hover-counter-bg: rgba(240,246,252,.2);--color-btn-outline-selected-text: #f0f6fc;--color-btn-outline-selected-bg: #0d419d;--color-btn-outline-selected-border: rgba(240,246,252,.1);--color-btn-outline-selected-shadow: 0 0 transparent;--color-btn-outline-disabled-text: rgba(88,166,255,.5);--color-btn-outline-disabled-bg: #0d1117;--color-btn-outline-disabled-counter-bg: rgba(31,111,235,.05);--color-btn-outline-focus-border: rgba(240,246,252,.1);--color-btn-outline-focus-shadow: 0 0 0 3px rgba(17,88,199,.4);--color-btn-outline-counter-bg: rgba(31,111,235,.1);--color-btn-danger-text: #f85149;--color-btn-danger-hover-text: #f0f6fc;--color-btn-danger-hover-bg: #da3633;--color-btn-danger-hover-border: #f85149;--color-btn-danger-hover-shadow: 0 0 transparent;--color-btn-danger-hover-inset-shadow: 0 0 transparent;--color-btn-danger-hover-icon: #f0f6fc;--color-btn-danger-hover-counter-bg: rgba(255,255,255,.2);--color-btn-danger-selected-text: #ffffff;--color-btn-danger-selected-bg: #b62324;--color-btn-danger-selected-border: #ff7b72;--color-btn-danger-selected-shadow: 0 0 transparent;--color-btn-danger-disabled-text: rgba(248,81,73,.5);--color-btn-danger-disabled-bg: #0d1117;--color-btn-danger-disabled-counter-bg: rgba(218,54,51,.05);--color-btn-danger-focus-border: #f85149;--color-btn-danger-focus-shadow: 0 0 0 3px rgba(248,81,73,.4);--color-btn-danger-counter-bg: rgba(218,54,51,.1);--color-btn-danger-icon: #f85149;--color-underlinenav-icon: #484f58;--color-underlinenav-border-hover: rgba(110,118,129,.4);--color-fg-default: #c9d1d9;--color-fg-muted: #8b949e;--color-fg-subtle: #484f58;--color-fg-on-emphasis: #f0f6fc;--color-canvas-default: #0d1117;--color-canvas-overlay: #161b22;--color-canvas-inset: #010409;--color-canvas-subtle: #161b22;--color-border-default: #30363d;--color-border-muted: #21262d;--color-border-subtle: rgba(240,246,252,.1);--color-shadow-small: 0 0 transparent;--color-shadow-medium: 0 3px 6px #010409;--color-shadow-large: 0 8px 24px #010409;--color-shadow-extra-large: 0 12px 48px #010409;--color-neutral-emphasis-plus: #6e7681;--color-neutral-emphasis: #6e7681;--color-neutral-muted: rgba(110,118,129,.4);--color-neutral-subtle: rgba(110,118,129,.1);--color-accent-fg: #58a6ff;--color-accent-emphasis: #1f6feb;--color-accent-muted: rgba(56,139,253,.4);--color-accent-subtle: rgba(56,139,253,.15);--color-success-fg: #3fb950;--color-success-emphasis: #238636;--color-success-muted: rgba(46,160,67,.4);--color-success-subtle: rgba(46,160,67,.15);--color-attention-fg: #d29922;--color-attention-emphasis: #9e6a03;--color-attention-muted: rgba(187,128,9,.4);--color-attention-subtle: rgba(187,128,9,.15);--color-severe-fg: #db6d28;--color-severe-emphasis: #bd561d;--color-severe-muted: rgba(219,109,40,.4);--color-severe-subtle: rgba(219,109,40,.15);--color-danger-fg: #f85149;--color-danger-emphasis: #da3633;--color-danger-muted: rgba(248,81,73,.4);--color-danger-subtle: rgba(248,81,73,.15);--color-done-fg: #a371f7;--color-done-emphasis: #8957e5;--color-done-muted: rgba(163,113,247,.4);--color-done-subtle: rgba(163,113,247,.15);--color-sponsors-fg: #db61a2;--color-sponsors-emphasis: #bf4b8a;--color-sponsors-muted: rgba(219,97,162,.4);--color-sponsors-subtle: rgba(219,97,162,.15);--color-primer-canvas-backdrop: rgba(1,4,9,.8);--color-primer-canvas-sticky: rgba(13,17,23,.95);--color-primer-border-active: #F78166;--color-primer-border-contrast: rgba(240,246,252,.2);--color-primer-shadow-highlight: 0 0 transparent;--color-primer-shadow-inset: 0 0 transparent;--color-primer-shadow-focus: 0 0 0 3px #0c2d6b;--color-scale-black: #010409;--color-scale-white: #f0f6fc;--color-scale-gray-0: #f0f6fc;--color-scale-gray-1: #c9d1d9;--color-scale-gray-2: #b1bac4;--color-scale-gray-3: #8b949e;--color-scale-gray-4: #6e7681;--color-scale-gray-5: #484f58;--color-scale-gray-6: #30363d;--color-scale-gray-7: #21262d;--color-scale-gray-8: #161b22;--color-scale-gray-9: #0d1117;--color-scale-blue-0: #cae8ff;--color-scale-blue-1: #a5d6ff;--color-scale-blue-2: #79c0ff;--color-scale-blue-3: #58a6ff;--color-scale-blue-4: #388bfd;--color-scale-blue-5: #1f6feb;--color-scale-blue-6: #1158c7;--color-scale-blue-7: #0d419d;--color-scale-blue-8: #0c2d6b;--color-scale-blue-9: #051d4d;--color-scale-green-0: #aff5b4;--color-scale-green-1: #7ee787;--color-scale-green-2: 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</script>
\ No newline at end of file
diff --git a/frontend/playwright.config.ts b/frontend/playwright.config.ts
new file mode 100644
index 00000000..7327f905
--- /dev/null
+++ b/frontend/playwright.config.ts
@@ -0,0 +1,34 @@
+import { defineConfig, devices } from "@playwright/test";
+
+export default defineConfig({
+  testDir: "./tests/e2e",
+  fullyParallel: true,
+  forbidOnly: !!process.env.CI,
+  retries: process.env.CI ? 2 : 0,
+  workers: process.env.CI ? 2 : undefined,
+  reporter: process.env.CI ? [["github"], ["html", { open: "never" }]] : [["html", { open: "never" }]],
+  use: {
+    baseURL: process.env.PLAYWRIGHT_BASE_URL ?? "http://127.0.0.1:3000",
+    trace: "retain-on-failure",
+    screenshot: "only-on-failure",
+    video: "retain-on-failure",
+  },
+  webServer: {
+    command: "npm run build && npm run start -- -p 3000",
+    url: "http://127.0.0.1:3000",
+    reuseExistingServer: !process.env.CI,
+    timeout: 120 * 1000,
+    env: {
+      NEXT_PUBLIC_CONTRACT_ID: process.env.NEXT_PUBLIC_CONTRACT_ID ?? "TEST_CONTRACT_ID",
+      NEXT_PUBLIC_STELLAR_NETWORK: process.env.NEXT_PUBLIC_STELLAR_NETWORK ?? "testnet",
+      NEXT_PUBLIC_RPC_URL: process.env.NEXT_PUBLIC_RPC_URL ?? "https://soroban-testnet.stellar.org",
+      NEXT_PUBLIC_E2E_MOCKS: process.env.NEXT_PUBLIC_E2E_MOCKS ?? "true",
+    },
+  },
+  projects: [
+    {
+      name: "chromium",
+      use: { ...devices["Desktop Chrome"] },
+    },
+  ],
+});
diff --git a/frontend/postcss.config.mjs b/frontend/postcss.config.mjs
new file mode 100644
index 00000000..61e36849
--- /dev/null
+++ b/frontend/postcss.config.mjs
@@ -0,0 +1,7 @@
+const config = {
+  plugins: {
+    "@tailwindcss/postcss": {},
+  },
+};
+
+export default config;
diff --git a/frontend/public/file.svg b/frontend/public/file.svg
new file mode 100644
index 00000000..004145cd
--- /dev/null
+++ b/frontend/public/file.svg
@@ -0,0 +1 @@
+<svg fill="none" viewBox="0 0 16 16" xmlns="http://www.w3.org/2000/svg"><path d="M14.5 13.5V5.41a1 1 0 0 0-.3-.7L9.8.29A1 1 0 0 0 9.08 0H1.5v13.5A2.5 2.5 0 0 0 4 16h8a2.5 2.5 0 0 0 2.5-2.5m-1.5 0v-7H8v-5H3v12a1 1 0 0 0 1 1h8a1 1 0 0 0 1-1M9.5 5V2.12L12.38 5zM5.13 5h-.62v1.25h2.12V5zm-.62 3h7.12v1.25H4.5zm.62 3h-.62v1.25h7.12V11z" clip-rule="evenodd" fill="#666" fill-rule="evenodd"/></svg>
\ No newline at end of file
diff --git a/frontend/public/globe.svg b/frontend/public/globe.svg
new file mode 100644
index 00000000..567f17b0
--- /dev/null
+++ b/frontend/public/globe.svg
@@ -0,0 +1 @@
+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><g clip-path="url(#a)"><path fill-rule="evenodd" clip-rule="evenodd" d="M10.27 14.1a6.5 6.5 0 0 0 3.67-3.45q-1.24.21-2.7.34-.31 1.83-.97 3.1M8 16A8 8 0 1 0 8 0a8 8 0 0 0 0 16m.48-1.52a7 7 0 0 1-.96 0H7.5a4 4 0 0 1-.84-1.32q-.38-.89-.63-2.08a40 40 0 0 0 3.92 0q-.25 1.2-.63 2.08a4 4 0 0 1-.84 1.31zm2.94-4.76q1.66-.15 2.95-.43a7 7 0 0 0 0-2.58q-1.3-.27-2.95-.43a18 18 0 0 1 0 3.44m-1.27-3.54a17 17 0 0 1 0 3.64 39 39 0 0 1-4.3 0 17 17 0 0 1 0-3.64 39 39 0 0 1 4.3 0m1.1-1.17q1.45.13 2.69.34a6.5 6.5 0 0 0-3.67-3.44q.65 1.26.98 3.1M8.48 1.5l.01.02q.41.37.84 1.31.38.89.63 2.08a40 40 0 0 0-3.92 0q.25-1.2.63-2.08a4 4 0 0 1 .85-1.32 7 7 0 0 1 .96 0m-2.75.4a6.5 6.5 0 0 0-3.67 3.44 29 29 0 0 1 2.7-.34q.31-1.83.97-3.1M4.58 6.28q-1.66.16-2.95.43a7 7 0 0 0 0 2.58q1.3.27 2.95.43a18 18 0 0 1 0-3.44m.17 4.71q-1.45-.12-2.69-.34a6.5 6.5 0 0 0 3.67 3.44q-.65-1.27-.98-3.1" fill="#666"/></g><defs><clipPath id="a"><path fill="#fff" d="M0 0h16v16H0z"/></clipPath></defs></svg>
\ No newline at end of file
diff --git a/frontend/public/next.svg b/frontend/public/next.svg
new file mode 100644
index 00000000..5174b28c
--- /dev/null
+++ b/frontend/public/next.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 394 80"><path fill="#000" d="M262 0h68.5v12.7h-27.2v66.6h-13.6V12.7H262V0ZM149 0v12.7H94v20.4h44.3v12.6H94v21h55v12.6H80.5V0h68.7zm34.3 0h-17.8l63.8 79.4h17.9l-32-39.7 32-39.6h-17.9l-23 28.6-23-28.6zm18.3 56.7-9-11-27.1 33.7h17.8l18.3-22.7z"/><path fill="#000" d="M81 79.3 17 0H0v79.3h13.6V17l50.2 62.3H81Zm252.6-.4c-1 0-1.8-.4-2.5-1s-1.1-1.6-1.1-2.6.3-1.8 1-2.5 1.6-1 2.6-1 1.8.3 2.5 1a3.4 3.4 0 0 1 .6 4.3 3.7 3.7 0 0 1-3 1.8zm23.2-33.5h6v23.3c0 2.1-.4 4-1.3 5.5a9.1 9.1 0 0 1-3.8 3.5c-1.6.8-3.5 1.3-5.7 1.3-2 0-3.7-.4-5.3-1s-2.8-1.8-3.7-3.2c-.9-1.3-1.4-3-1.4-5h6c.1.8.3 1.6.7 2.2s1 1.2 1.6 1.5c.7.4 1.5.5 2.4.5 1 0 1.8-.2 2.4-.6a4 4 0 0 0 1.6-1.8c.3-.8.5-1.8.5-3V45.5zm30.9 9.1a4.4 4.4 0 0 0-2-3.3 7.5 7.5 0 0 0-4.3-1.1c-1.3 0-2.4.2-3.3.5-.9.4-1.6 1-2 1.6a3.5 3.5 0 0 0-.3 4c.3.5.7.9 1.3 1.2l1.8 1 2 .5 3.2.8c1.3.3 2.5.7 3.7 1.2a13 13 0 0 1 3.2 1.8 8.1 8.1 0 0 1 3 6.5c0 2-.5 3.7-1.5 5.1a10 10 0 0 1-4.4 3.5c-1.8.8-4.1 1.2-6.8 1.2-2.6 0-4.9-.4-6.8-1.2-2-.8-3.4-2-4.5-3.5a10 10 0 0 1-1.7-5.6h6a5 5 0 0 0 3.5 4.6c1 .4 2.2.6 3.4.6 1.3 0 2.5-.2 3.5-.6 1-.4 1.8-1 2.4-1.7a4 4 0 0 0 .8-2.4c0-.9-.2-1.6-.7-2.2a11 11 0 0 0-2.1-1.4l-3.2-1-3.8-1c-2.8-.7-5-1.7-6.6-3.2a7.2 7.2 0 0 1-2.4-5.7 8 8 0 0 1 1.7-5 10 10 0 0 1 4.3-3.5c2-.8 4-1.2 6.4-1.2 2.3 0 4.4.4 6.2 1.2 1.8.8 3.2 2 4.3 3.4 1 1.4 1.5 3 1.5 5h-5.8z"/></svg>
\ No newline at end of file
diff --git a/frontend/public/vercel.svg b/frontend/public/vercel.svg
new file mode 100644
index 00000000..77053960
--- /dev/null
+++ b/frontend/public/vercel.svg
@@ -0,0 +1 @@
+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1155 1000"><path d="m577.3 0 577.4 1000H0z" fill="#fff"/></svg>
\ No newline at end of file
diff --git a/frontend/public/window.svg b/frontend/public/window.svg
new file mode 100644
index 00000000..b2b2a44f
--- /dev/null
+++ b/frontend/public/window.svg
@@ -0,0 +1 @@
+<svg fill="none" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16"><path fill-rule="evenodd" clip-rule="evenodd" d="M1.5 2.5h13v10a1 1 0 0 1-1 1h-11a1 1 0 0 1-1-1zM0 1h16v11.5a2.5 2.5 0 0 1-2.5 2.5h-11A2.5 2.5 0 0 1 0 12.5zm3.75 4.5a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5M7 4.75a.75.75 0 1 1-1.5 0 .75.75 0 0 1 1.5 0m1.75.75a.75.75 0 1 0 0-1.5.75.75 0 0 0 0 1.5" fill="#666"/></svg>
\ No newline at end of file
diff --git a/frontend/src/test/setup.ts b/frontend/src/test/setup.ts
new file mode 100644
index 00000000..84b023ca
--- /dev/null
+++ b/frontend/src/test/setup.ts
@@ -0,0 +1,38 @@
+import "@testing-library/jest-dom";
+import { vi } from "vitest";
+
+Object.defineProperty(HTMLCanvasElement.prototype, "getContext", {
+  value: vi.fn(() => null),
+  configurable: true,
+  writable: true,
+});
+
+// Mock Next.js router
+vi.mock("next/navigation", () => ({
+  useRouter() {
+    return {
+      push: vi.fn(),
+      replace: vi.fn(),
+      prefetch: vi.fn(),
+    };
+  },
+  useSearchParams() {
+    return new URLSearchParams();
+  },
+  usePathname() {
+    return "";
+  },
+}));
+
+// Mock environment variables
+process.env.NEXT_PUBLIC_STELLAR_NETWORK = "testnet";
+process.env.NEXT_PUBLIC_RPC_URL = "https://soroban-testnet.stellar.org";
+
+// Global test utilities
+global.matchMedia = global.matchMedia || function() {
+  return {
+    matches: false,
+    addListener: function() {},
+    removeListener: function() {},
+  };
+};
diff --git a/frontend/tailwind.config.ts b/frontend/tailwind.config.ts
new file mode 100644
index 00000000..5a960f00
--- /dev/null
+++ b/frontend/tailwind.config.ts
@@ -0,0 +1,11 @@
+import type { Config } from "tailwindcss";
+
+const config: Config = {
+  content: ["./app/**/*.{js,ts,jsx,tsx}", "./components/**/*.{js,ts,jsx,tsx}", "./lib/**/*.{js,ts,jsx,tsx}"],
+  theme: {
+    extend: {},
+  },
+  plugins: [],
+};
+
+export default config;
diff --git a/frontend/test-results/.last-run.json b/frontend/test-results/.last-run.json
new file mode 100644
index 00000000..cbcc1fba
--- /dev/null
+++ b/frontend/test-results/.last-run.json
@@ -0,0 +1,4 @@
+{
+  "status": "passed",
+  "failedTests": []
+}
\ No newline at end of file
diff --git a/frontend/tests/e2e/landing.spec.ts b/frontend/tests/e2e/landing.spec.ts
new file mode 100644
index 00000000..71fab340
--- /dev/null
+++ b/frontend/tests/e2e/landing.spec.ts
@@ -0,0 +1,11 @@
+import { test, expect } from "@playwright/test";
+
+test("Landing page navigation", async ({ page }) => {
+  await page.goto("/");
+
+  await expect(page.getByRole("link", { name: "ChainLojistic" })).toBeVisible();
+  await page.locator('a[href="/register"]').first().click();
+  await expect(page).toHaveURL(/\/register/);
+
+  await expect(page.getByRole("heading", { name: "Product Registration" })).toBeVisible();
+});
diff --git a/frontend/tests/e2e/product.spec.ts b/frontend/tests/e2e/product.spec.ts
new file mode 100644
index 00000000..1b97e31e
--- /dev/null
+++ b/frontend/tests/e2e/product.spec.ts
@@ -0,0 +1,55 @@
+import { test, expect } from "@playwright/test";
+
+function walletStorageState(options: { publicKey: string }) {
+  return {
+    state: {
+      status: "connected",
+      publicKey: options.publicKey,
+      network: "testnet",
+      error: null,
+    },
+    version: 0,
+  };
+}
+
+test("Product registration flow", async ({ page }) => {
+  const publicKey = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF";
+
+  await page.addInitScript(({ key, value }) => {
+    window.localStorage.setItem(key, value);
+  }, {
+    key: "chain-logistics-wallet",
+    value: JSON.stringify(walletStorageState({ publicKey })),
+  });
+
+  await page.goto("/register");
+
+  // Wait for persisted wallet state to hydrate (store initialization is async).
+  await expect(
+    page.getByRole("button", { name: new RegExp(`Wallet connected: ${publicKey}`) })
+  ).toBeVisible({ timeout: 15_000 });
+
+  await page.getByLabel("Product ID").fill("SKU-12345");
+  await page.getByLabel("Product Name").fill("Test Product");
+  await page.getByRole("button", { name: "Next" }).click();
+
+  await page.getByLabel("Origin Location").fill("E2E Origin");
+  await page.getByLabel("Category").selectOption("Electronics");
+  await page.getByRole("button", { name: "Next" }).click();
+
+  const submit = page.getByRole("button", { name: "Register Product" });
+  const successHeading = page.getByRole("heading", { name: "Registration Successful!" });
+
+  await Promise.race([
+    submit.waitFor({ state: "visible" }),
+    successHeading.waitFor({ state: "visible" }),
+  ]);
+
+  if (await submit.isVisible().catch(() => false)) {
+    await expect(submit).toBeEnabled();
+    await submit.click();
+  }
+
+  await expect(successHeading).toBeVisible({ timeout: 30_000 });
+  await expect(page.getByText("Transaction Hash:")).toBeVisible();
+});
diff --git a/frontend/tests/e2e/tracking.spec.ts b/frontend/tests/e2e/tracking.spec.ts
new file mode 100644
index 00000000..43d12201
--- /dev/null
+++ b/frontend/tests/e2e/tracking.spec.ts
@@ -0,0 +1,23 @@
+import { test, expect } from "@playwright/test";
+
+test("Add event flow", async ({ page }) => {
+  await page.goto("/tracking/add");
+
+  await expect(page.getByRole("heading", { name: "Supply Chain Operations" })).toBeVisible();
+
+  await page.locator("#product").selectOption("PRD-1001-XYZ");
+  await page.getByRole("radio").filter({ hasText: "Ship" }).first().click();
+  await page.locator("#location").fill("E2E Facility");
+
+  await page.getByRole("button", { name: /Sign & Submit Event/i }).click();
+
+  await expect(page.getByRole("heading", { name: "Event Recorded!" })).toBeVisible({ timeout: 30_000 });
+});
+
+test("View product timeline", async ({ page }) => {
+  const productId = "PROD-001";
+  await page.goto(`/products/${productId}`);
+
+  await expect(page.getByRole("heading", { name: "Supply Chain Timeline" })).toBeVisible();
+  await expect(page.getByText(/Mock: Shipment dispatched/i)).toBeVisible();
+});
diff --git a/frontend/tests/e2e/wallet.spec.ts b/frontend/tests/e2e/wallet.spec.ts
new file mode 100644
index 00000000..b25567d0
--- /dev/null
+++ b/frontend/tests/e2e/wallet.spec.ts
@@ -0,0 +1,31 @@
+import { test, expect } from "@playwright/test";
+
+function walletStorageState(options: { publicKey: string }) {
+  return {
+    state: {
+      status: "connected",
+      publicKey: options.publicKey,
+      network: "testnet",
+      error: null,
+    },
+    version: 0,
+  };
+}
+
+test("Wallet connection flow (simulated)", async ({ page }) => {
+  const publicKey = "GAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWHF";
+
+  await page.addInitScript(({ key, value }) => {
+    window.localStorage.setItem(key, value);
+  }, {
+    key: "chain-logistics-wallet",
+    value: JSON.stringify(walletStorageState({ publicKey })),
+  });
+
+  await page.goto("/dashboard");
+
+  await expect(page.getByRole("button", { name: new RegExp(`Wallet connected: ${publicKey}`) })).toBeVisible();
+
+  await page.getByRole("button", { name: new RegExp(`Wallet connected: ${publicKey}`) }).click();
+  await expect(page.getByRole("menuitem", { name: "Disconnect" })).toBeVisible();
+});
diff --git a/frontend/tests/integration/blockchain-config.spec.ts b/frontend/tests/integration/blockchain-config.spec.ts
new file mode 100644
index 00000000..7be995a4
--- /dev/null
+++ b/frontend/tests/integration/blockchain-config.spec.ts
@@ -0,0 +1,32 @@
+import { describe, expect, it } from "vitest";
+
+import {
+  getBlockchainConfig,
+  getNetworkName,
+  getSupportedNetworks,
+} from "@/lib/blockchain/config";
+
+describe("blockchain config integration", () => {
+  it("returns all supported networks with valid names", () => {
+    const networks = getSupportedNetworks();
+
+    expect(networks).toContain("stellar");
+    expect(networks).toContain("ethereum");
+    expect(networks).toContain("polygon");
+
+    for (const network of networks) {
+      const config = getBlockchainConfig(network);
+      const name = getNetworkName(network);
+
+      expect(config.network).toBe(network);
+      expect(typeof config.rpcUrl).toBe("string");
+      expect(name.length).toBeGreaterThan(0);
+    }
+  });
+
+  it("throws on unsupported network", () => {
+    expect(() => getBlockchainConfig("unknown" as never)).toThrow(
+      "Unsupported blockchain network: unknown"
+    );
+  });
+});
diff --git a/frontend/tsconfig.json b/frontend/tsconfig.json
new file mode 100644
index 00000000..05fc29f7
--- /dev/null
+++ b/frontend/tsconfig.json
@@ -0,0 +1,37 @@
+{
+  "compilerOptions": {
+    "target": "ES2017",
+    "lib": ["dom", "dom.iterable", "esnext"],
+    "allowJs": true,
+    "skipLibCheck": true,
+    "strict": true,
+    "noEmit": true,
+    "esModuleInterop": true,
+    "module": "esnext",
+    "moduleResolution": "bundler",
+    "resolveJsonModule": true,
+    "isolatedModules": true,
+    "jsx": "react-jsx",
+    "incremental": true,
+    "forceConsistentCasingInFileNames": true,
+    "plugins": [
+      {
+        "name": "next"
+      }
+    ],
+    "paths": {
+      "@/*": ["./*"]
+    }
+  },
+  "include": [
+    "next-env.d.ts",
+    "**/*.ts",
+    "**/*.tsx",
+    ".next/types/**/*.ts",
+    ".next/dev/types/**/*.ts",
+    "**/*.mts"
+  ],
+  "exclude": [
+    "node_modules"
+  ]
+}
diff --git a/frontend/vitest.config.ts b/frontend/vitest.config.ts
new file mode 100644
index 00000000..007e095f
--- /dev/null
+++ b/frontend/vitest.config.ts
@@ -0,0 +1,51 @@
+import { defineConfig } from "vitest/config";
+import tsconfigPaths from "vite-tsconfig-paths";
+import path from "path";
+
+export default defineConfig({
+  plugins: [tsconfigPaths()],
+  test: {
+    environment: "jsdom",
+    setupFiles: ["./src/test/setup.ts"],
+    include: [
+      "**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}",
+      "tests/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}"
+    ],
+    exclude: [
+      "**/node_modules/**",
+      "**/dist/**",
+      "**/.next/**",
+      "**/coverage/**",
+      "e2e/**",
+      "tests/e2e/**"
+    ],
+    coverage: {
+      provider: "v8",
+      reporter: ["text", "json", "html", "lcov"],
+      exclude: [
+        "**/node_modules/**",
+        "**/dist/**",
+        "**/.next/**",
+        "**/*.d.ts",
+        "**/*.config.{js,ts,mjs,mts}",
+        "**/coverage/**",
+        "**/src/test/**"
+      ],
+      thresholds: {
+        global: {
+          branches: 80,
+          functions: 80,
+          lines: 80,
+          statements: 80
+        }
+      }
+    },
+    globals: true,
+    testTimeout: 10000
+  },
+  resolve: {
+    alias: {
+      "@": path.resolve(__dirname, ".")
+    }
+  }
+});
diff --git a/sdk/API_REFERENCE.md b/sdk/API_REFERENCE.md
new file mode 100644
index 00000000..bea97c59
--- /dev/null
+++ b/sdk/API_REFERENCE.md
@@ -0,0 +1,100 @@
+# SDK API Reference
+
+This reference summarizes the main services and methods available in the Python and Rust SDKs.
+
+## Core Client
+
+### Python
+
+- `ChainLogisticsClient(config)`
+- Services:
+  - `client.products`
+  - `client.events`
+  - `client.stats`
+
+### Rust
+
+- `ChainLogisticsClient::new(config)`
+- Services:
+  - `client.products()`
+  - `client.events()`
+  - `client.stats()`
+
+## Products Service
+
+### Methods
+
+- `list(query)`
+- `get(product_id)`
+- `create(new_product)`
+- `update(product_id, update_product)`
+- `delete(product_id)`
+- `search(query, limit)`
+- `list_by_owner(owner_address, offset, limit)`
+- `list_by_category(category, offset, limit)`
+- `list_active(offset, limit)`
+
+### Primary Models
+
+- `Product`
+- `NewProduct`
+- `UpdateProduct`
+- `ProductListQuery`
+- `PaginationMeta`
+
+## Events Service
+
+### Methods
+
+- `list(query)`
+- `get(event_id)`
+- `create(new_tracking_event)`
+- `list_by_product(product_id, offset, limit)`
+- `list_by_product_and_type(product_id, event_type, offset, limit)`
+- `get_all_for_product(product_id)`
+- `get_by_type_for_product(product_id, event_type)`
+
+### Primary Models
+
+- `TrackingEvent`
+- `NewTrackingEvent`
+- `EventListQuery`
+- `PaginationMeta`
+
+## Stats Service
+
+### Methods
+
+- `get_global()`
+- `health()`
+- `db_health()`
+
+### Primary Models
+
+- `GlobalStats`
+- `HealthResponse`
+- `DbHealthResponse`
+
+## Error Handling
+
+### Python exceptions
+
+- `ApiError`
+- `AuthenticationError`
+- `RateLimitError`
+- `NotFoundError`
+- `ValidationError`
+- `ConfigError`
+
+### Rust error type
+
+- `chainlogistics_sdk::Error` with variants for API/auth/rate-limit/validation/server errors.
+
+## API Endpoint Mapping
+
+The SDK methods map to REST endpoints under the backend API, for example:
+
+- Products: `api/v1/products`, `api/v1/admin/products`
+- Events: `api/v1/events`, `api/v1/admin/events`
+- Stats: `api/v1/stats`
+- Health: `health`, `health/db`
diff --git a/sdk/EXAMPLES.md b/sdk/EXAMPLES.md
new file mode 100644
index 00000000..13f32cb6
--- /dev/null
+++ b/sdk/EXAMPLES.md
@@ -0,0 +1,160 @@
+# SDK Examples
+
+## 1. Initialize a Client
+
+### Python
+
+```python
+from chainlogistics_sdk import ChainLogisticsClient, Config
+
+config = Config(
+    api_key="YOUR_API_KEY",
+    base_url="https://api.chainlogistics.io",
+    timeout=30,
+)
+client = ChainLogisticsClient(config)
+```
+
+### Rust
+
+```rust
+use chainlogistics_sdk::{ChainLogisticsClient, Config};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let config = Config::new("YOUR_API_KEY")
+        .with_base_url("https://api.chainlogistics.io");
+    let client = ChainLogisticsClient::new(config)?;
+    println!("SDK ready: {}", client.config().base_url());
+    Ok(())
+}
+```
+
+## 2. Create and Fetch a Product
+
+### Python
+
+```python
+from chainlogistics_sdk import NewProduct
+
+payload = NewProduct(
+    id="PROD-9001",
+    name="Premium Coffee",
+    description="Traceable single-origin coffee",
+    origin_location="Colombia",
+    category="Food",
+    tags=["coffee", "single-origin"],
+    certifications=["Organic"],
+    media_hashes=[],
+    custom_fields={},
+    owner_address="GABC123DEF456",
+    created_by="sdk-example",
+)
+
+created = client.products.create(payload)
+loaded = client.products.get(created.id)
+print(loaded.name)
+```
+
+### Rust
+
+```rust
+use chainlogistics_sdk::{models::NewProduct, ChainLogisticsClient, Config};
+
+# async fn run() -> Result<(), Box<dyn std::error::Error>> {
+# let client = ChainLogisticsClient::new(Config::new("YOUR_API_KEY"))?;
+let payload = NewProduct {
+    id: "PROD-9001".to_string(),
+    name: "Premium Coffee".to_string(),
+    description: "Traceable single-origin coffee".to_string(),
+    origin_location: "Colombia".to_string(),
+    category: "Food".to_string(),
+    tags: vec!["coffee".into(), "single-origin".into()],
+    certifications: vec!["Organic".into()],
+    media_hashes: vec![],
+    custom_fields: serde_json::json!({}),
+    owner_address: "GABC123DEF456".to_string(),
+    created_by: "sdk-example".to_string(),
+};
+
+let created = client.products().create(&payload).await?;
+let loaded = client.products().get(&created.id).await?;
+println!("{}", loaded.name);
+# Ok(())
+# }
+```
+
+## 3. Track an Event and Query by Product
+
+### Python
+
+```python
+from datetime import datetime
+from chainlogistics_sdk import NewTrackingEvent
+
+event = NewTrackingEvent(
+    product_id="PROD-9001",
+    actor_address="GABC123DEF456",
+    timestamp=datetime.utcnow(),
+    event_type="shipment",
+    location="Port Warehouse",
+    data_hash="hash123",
+    note="Shipped to regional hub",
+    metadata={"batch": "B1"},
+)
+
+client.events.create(event)
+events, page = client.events.list_by_product("PROD-9001", offset=0, limit=20)
+print(page.total)
+```
+
+### Rust
+
+```rust
+use chainlogistics_sdk::models::{EventListQuery, NewTrackingEvent};
+
+# async fn run(client: &chainlogistics_sdk::ChainLogisticsClient) -> Result<(), Box<dyn std::error::Error>> {
+let event = NewTrackingEvent {
+    product_id: "PROD-9001".to_string(),
+    actor_address: "GABC123DEF456".to_string(),
+    timestamp: chrono::Utc::now(),
+    event_type: "shipment".to_string(),
+    location: "Port Warehouse".to_string(),
+    data_hash: "hash123".to_string(),
+    note: Some("Shipped to regional hub".to_string()),
+    metadata: serde_json::json!({"batch": "B1"}),
+};
+
+client.events().create(&event).await?;
+let query = EventListQuery {
+    offset: Some(0),
+    limit: Some(20),
+    product_id: Some("PROD-9001".to_string()),
+    event_type: None,
+};
+let (events, pagination) = client.events().list(Some(query)).await?;
+println!("events={}, total={}", events.len(), pagination.total);
+# Ok(())
+# }
+```
+
+## 4. Health and Stats
+
+### Python
+
+```python
+health = client.stats.health()
+stats = client.stats.get_global()
+print(health.status, stats.total_products)
+```
+
+### Rust
+
+```rust
+# async fn run(client: &chainlogistics_sdk::ChainLogisticsClient) -> Result<(), Box<dyn std::error::Error>> {
+let health = client.stats().health().await?;
+let stats = client.stats().get_global().await?;
+println!("{} {}", health.status, stats.total_products);
+# Ok(())
+# }
+```
diff --git a/sdk/INSTALLATION.md b/sdk/INSTALLATION.md
new file mode 100644
index 00000000..5f539276
--- /dev/null
+++ b/sdk/INSTALLATION.md
@@ -0,0 +1,73 @@
+# SDK Installation and Setup
+
+## Prerequisites
+
+- Access to ChainLogistics API endpoint.
+- Valid API key with required scope.
+
+## Python SDK
+
+Path: `sdk/python`
+
+### Install from package index
+
+```bash
+pip install chainlogistics-sdk
+```
+
+### Install locally for development
+
+```bash
+cd sdk/python
+pip install -e .
+```
+
+### Verify installation
+
+```python
+from chainlogistics_sdk import ChainLogisticsClient, Config
+
+client = ChainLogisticsClient(Config(api_key="YOUR_API_KEY"))
+print(client)
+```
+
+## Rust SDK
+
+Path: `sdk/rust`
+
+### Add dependency
+
+```toml
+[dependencies]
+chainlogistics-sdk = "1.0.0"
+```
+
+### Local path dependency
+
+```toml
+[dependencies]
+chainlogistics-sdk = { path = "../sdk/rust" }
+```
+
+### Verify installation
+
+```rust
+use chainlogistics_sdk::{ChainLogisticsClient, Config};
+
+fn main() {
+    let config = Config::new("YOUR_API_KEY");
+    let client = ChainLogisticsClient::new(config).expect("client");
+    println!("configured for {}", client.config().base_url());
+}
+```
+
+## Environment and Configuration
+
+Common configuration options:
+
+- `api_key`: authentication token.
+- `base_url`: API host (production/staging).
+- `timeout`: request timeout.
+- `user_agent`: custom client identifier.
+
+Use staging for integration testing and release validation before production rollout.
diff --git a/sdk/MIGRATION_GUIDE.md b/sdk/MIGRATION_GUIDE.md
new file mode 100644
index 00000000..91d321d6
--- /dev/null
+++ b/sdk/MIGRATION_GUIDE.md
@@ -0,0 +1,74 @@
+# SDK Migration Guide
+
+This guide describes how to migrate between major SDK versions.
+
+## 0.x -> 1.x
+
+## Breaking Changes Summary
+
+- Stable service-oriented API exposed via `products`, `events`, and `stats` services.
+- Standardized pagination metadata for list endpoints.
+- Standardized error mapping for auth, validation, not-found, rate-limit, and server errors.
+
+## Python SDK Migration
+
+### Before (0.x style)
+
+```python
+# Pseudocode from legacy usage patterns
+client.get_products()
+client.create_event({...})
+```
+
+### After (1.x)
+
+```python
+products, page = client.products.list()
+client.events.create(new_event)
+stats = client.stats.get_global()
+```
+
+Checklist:
+
+- Replace direct client method calls with service namespaces.
+- Use `ProductListQuery` and `EventListQuery` for filters.
+- Update error handling to typed exceptions.
+
+## Rust SDK Migration
+
+### Before (0.x style)
+
+```rust
+// Pseudocode from legacy usage patterns
+client.get_products().await?;
+client.create_event(payload).await?;
+```
+
+### After (1.x)
+
+```rust
+let (products, page) = client.products().list(None).await?;
+let created = client.events().create(&event).await?;
+let stats = client.stats().get_global().await?;
+```
+
+Checklist:
+
+- Use service accessors (`products()`, `events()`, `stats()`).
+- Update list calls to consume `(items, pagination)` tuples.
+- Handle `chainlogistics_sdk::Error` variants explicitly where needed.
+
+## Validation Steps After Migration
+
+- Run SDK unit tests.
+- Validate one product flow end-to-end in staging.
+- Validate one event flow end-to-end in staging.
+- Confirm error handling paths for 401/404/429.
+
+## Future Migration Notes
+
+For each major release, add:
+
+- Explicit API changes with old/new examples.
+- Data model changes and compatibility notes.
+- Rollback guidance where applicable.
diff --git a/sdk/README.md b/sdk/README.md
new file mode 100644
index 00000000..1ae111ee
--- /dev/null
+++ b/sdk/README.md
@@ -0,0 +1,17 @@
+# ChainLogistics SDK Documentation
+
+This directory contains shared SDK documentation for the Python and Rust SDKs.
+
+## Documentation Index
+
+- `INSTALLATION.md`: installation and setup for Python and Rust SDKs.
+- `API_REFERENCE.md`: high-level API reference by service and method.
+- `EXAMPLES.md`: common end-to-end usage examples.
+- `MIGRATION_GUIDE.md`: migration guidance for SDK upgrades.
+- `python/README.md`: Python SDK details.
+- `rust/README.md`: Rust SDK details.
+
+## Supported SDKs
+
+- Python: `sdk/python`
+- Rust: `sdk/rust`
diff --git a/sdk/python/README.md b/sdk/python/README.md
new file mode 100644
index 00000000..6b36d0ab
--- /dev/null
+++ b/sdk/python/README.md
@@ -0,0 +1,331 @@
+# ChainLogistics Python SDK
+
+The official Python SDK for the ChainLogistics API, providing a convenient interface for managing supply chain products and tracking events on the blockchain.
+
+Shared SDK documentation is available in:
+
+- `sdk/README.md`
+- `sdk/INSTALLATION.md`
+- `sdk/API_REFERENCE.md`
+- `sdk/EXAMPLES.md`
+- `sdk/MIGRATION_GUIDE.md`
+
+## Installation
+
+```bash
+pip install chainlogistics-sdk
+```
+
+## Quick Start
+
+```python
+from chainlogistics_sdk import ChainLogisticsClient, Config
+
+# Initialize the client
+config = Config(api_key="your-api-key")
+client = ChainLogisticsClient(config)
+
+# List products
+products, pagination = client.products.list()
+print(f"Found {pagination.total} products")
+
+for product in products:
+    print(f"- {product.name} ({product.id})")
+
+# Create a new product
+from chainlogistics_sdk import NewProduct
+
+new_product = NewProduct(
+    id="PROD-001",
+    name="Organic Coffee Beans",
+    description="Premium organic coffee beans from Colombia",
+    origin_location="Colombia",
+    category="Food & Beverages",
+    tags=["organic", "coffee", "premium"],
+    certifications=["Fair Trade", "Organic"],
+    media_hashes=[],
+    custom_fields={},
+    owner_address="GABC123DEF456",
+    created_by="user@example.com",
+)
+
+created = client.products.create(new_product)
+print(f"Created product: {created.id}")
+
+# Add tracking event
+from chainlogistics_sdk import NewTrackingEvent
+from datetime import datetime
+
+event = NewTrackingEvent(
+    product_id="PROD-001",
+    actor_address="GABC123DEF456",
+    timestamp=datetime.utcnow(),
+    event_type="harvest",
+    location="Colombia Farm",
+    data_hash="abc123...",
+    note="Harvested premium beans",
+    metadata={"batch": "BATCH-001"},
+)
+
+created_event = client.events.create(event)
+print(f"Created event: {created_event.id}")
+```
+
+## Configuration
+
+The SDK can be configured with various options:
+
+```python
+from chainlogistics_sdk import Config
+
+config = Config(
+    api_key="your-api-key",
+    base_url="https://api.chainlogistics.io",  # Default
+    timeout=30,  # Default: 30 seconds
+    user_agent="my-app/1.0",  # Default: chainlogistics-sdk-python/1.0.0
+)
+
+# Or use builder pattern
+config = Config("your-api-key").with_timeout(60).with_base_url("https://staging-api.chainlogistics.io")
+```
+
+## Products
+
+### List Products
+
+```python
+# List all products
+products, pagination = client.products.list()
+
+# With filtering
+from chainlogistics_sdk import ProductListQuery
+
+query = ProductListQuery(
+    limit=20,
+    offset=0,
+    category="Food & Beverages",
+    is_active=True,
+    search="coffee"
+)
+
+products, pagination = client.products.list(query)
+```
+
+### Get Product
+
+```python
+product = client.products.get("PROD-001")
+print(product.name)
+```
+
+### Create Product
+
+```python
+new_product = NewProduct(
+    id="PROD-002",
+    name="Premium Tea",
+    description="High-quality tea leaves",
+    origin_location="India",
+    category="Food & Beverages",
+    tags=["tea", "premium"],
+    certifications=[],
+    media_hashes=[],
+    custom_fields={},
+    owner_address="GDEF789ABC012",
+    created_by="user@example.com",
+)
+
+product = client.products.create(new_product)
+```
+
+### Update Product
+
+```python
+from chainlogistics_sdk import UpdateProduct
+
+update = UpdateProduct(
+    name="Premium Tea - Updated",
+    description="High-quality tea leaves from Darjeeling",
+    updated_by="user@example.com"
+)
+
+product = client.products.update("PROD-002", update)
+```
+
+### Delete Product
+
+```python
+client.products.delete("PROD-002")
+```
+
+### Search Products
+
+```python
+# Search by text
+results = client.products.search("organic coffee", limit=10)
+
+# By owner
+products, _ = client.products.list_by_owner("GABC123DEF456")
+
+# By category
+products, _ = client.products.list_by_category("Food & Beverages")
+
+# Active products only
+products, _ = client.products.list_active()
+```
+
+## Events
+
+### List Events
+
+```python
+from chainlogistics_sdk import EventListQuery
+
+# Events for a specific product
+query = EventListQuery(
+    product_id="PROD-001",
+    limit=50,
+    offset=0
+)
+
+events, pagination = client.events.list(query)
+
+# Filter by event type
+query = EventListQuery(
+    product_id="PROD-001",
+    event_type="shipment",
+    limit=20
+)
+
+events, pagination = client.events.list(query)
+```
+
+### Get Event
+
+```python
+event = client.events.get(123)
+print(event.event_type)
+```
+
+### Create Event
+
+```python
+from datetime import datetime
+
+event = NewTrackingEvent(
+    product_id="PROD-001",
+    actor_address="GABC123DEF456",
+    timestamp=datetime.utcnow(),
+    event_type="shipment",
+    location="Shipping Port",
+    data_hash="def456...",
+    note="Shipped to customer",
+    metadata={"tracking_number": "TRACK-123"},
+)
+
+created_event = client.events.create(event)
+```
+
+### Convenience Methods
+
+```python
+# Get all events for a product
+events = client.events.get_all_for_product("PROD-001")
+
+# Get specific event type for a product
+shipments = client.events.get_by_type_for_product("PROD-001", "shipment")
+```
+
+## Statistics
+
+```python
+# Global statistics
+stats = client.stats.get_global()
+print(f"Total products: {stats.total_products}")
+print(f"Active products: {stats.active_products}")
+print(f"Total events: {stats.total_events}")
+
+# Health checks
+health = client.stats.health()
+print(f"Service status: {health.status}")
+
+db_health = client.stats.db_health()
+print(f"Database status: {db_health.status}")
+```
+
+## Error Handling
+
+The SDK provides specific exception types for different error scenarios:
+
+```python
+from chainlogistics_sdk import ChainLogisticsClient, Config
+from chainlogistics_sdk.exceptions import (
+    AuthenticationError,
+    RateLimitError,
+    NotFoundError,
+    ValidationError,
+    ApiError
+)
+
+try:
+    products, _ = client.products.list()
+except AuthenticationError:
+    print("Invalid API key")
+except RateLimitError:
+    print("Rate limit exceeded - try again later")
+except NotFoundError as e:
+    print(f"Resource not found: {e}")
+except ValidationError as e:
+    print(f"Invalid request: {e}")
+except ApiError as e:
+    print(f"API error: {e}")
+```
+
+## Context Manager
+
+Use the client as a context manager for automatic cleanup:
+
+```python
+with ChainLogisticsClient(config) as client:
+    products, _ = client.products.list()
+    # Client session is automatically closed
+```
+
+## Development
+
+### Installation for Development
+
+```bash
+git clone https://github.com/chainlogistics/chainlogistics-sdk-python
+cd chainlogistics-sdk-python
+pip install -e ".[dev]"
+```
+
+### Running Tests
+
+```bash
+pytest
+```
+
+### Code Formatting
+
+```bash
+black src tests
+isort src tests
+```
+
+### Type Checking
+
+```bash
+mypy src
+```
+
+## License
+
+MIT License - see LICENSE file for details.
+
+## Support
+
+- Documentation: https://chainlogistics-sdk-python.readthedocs.io/
+- Issues: https://github.com/chainlogistics/chainlogistics-sdk-python/issues
+- Email: support@chainlogistics.io
diff --git a/sdk/python/pyproject.toml b/sdk/python/pyproject.toml
new file mode 100644
index 00000000..841451c7
--- /dev/null
+++ b/sdk/python/pyproject.toml
@@ -0,0 +1,89 @@
+[build-system]
+requires = ["setuptools>=61.0", "wheel"]
+build-backend = "setuptools.build_meta"
+
+[project]
+name = "chainlogistics-sdk"
+version = "1.0.0"
+description = "Python SDK for ChainLogistics API"
+readme = "README.md"
+license = {text = "MIT"}
+authors = [
+    {name = "ChainLogistics Team", email = "support@chainlogistics.io"}
+]
+maintainers = [
+    {name = "ChainLogistics Team", email = "support@chainlogistics.io"}
+]
+keywords = ["blockchain", "supply-chain", "logistics", "api"]
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "Intended Audience :: Developers",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Programming Language :: Python :: 3",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Software Development :: Libraries :: Python Modules",
+    "Topic :: Internet :: WWW/HTTP",
+]
+requires-python = ">=3.8"
+dependencies = [
+    "requests>=2.28.0",
+    "pydantic>=2.0.0",
+    "python-dateutil>=2.8.0",
+]
+
+[project.optional-dependencies]
+dev = [
+    "pytest>=7.0.0",
+    "pytest-asyncio>=0.21.0",
+    "pytest-cov>=4.0.0",
+    "black>=23.0.0",
+    "isort>=5.12.0",
+    "flake8>=6.0.0",
+    "mypy>=1.0.0",
+    "pre-commit>=3.0.0",
+]
+docs = [
+    "sphinx>=6.0.0",
+    "sphinx-rtd-theme>=1.2.0",
+    "myst-parser>=1.0.0",
+]
+
+[project.urls]
+Homepage = "https://github.com/chainlogistics/chainlogistics-sdk-python"
+Documentation = "https://chainlogistics-sdk-python.readthedocs.io/"
+Repository = "https://github.com/chainlogistics/chainlogistics-sdk-python"
+"Bug Tracker" = "https://github.com/chainlogistics/chainlogistics-sdk-python/issues"
+
+[tool.setuptools.packages.find]
+where = ["src"]
+
+[tool.setuptools.package-dir]
+"" = "src"
+
+[tool.black]
+line-length = 88
+target-version = ['py38']
+include = '\.pyi?$'
+
+[tool.isort]
+profile = "black"
+multi_line_output = 3
+line_length = 88
+
+[tool.mypy]
+python_version = "3.8"
+warn_return_any = true
+warn_unused_configs = true
+disallow_untyped_defs = true
+
+[tool.pytest.ini_options]
+testpaths = ["tests"]
+python_files = ["test_*.py"]
+python_classes = ["Test*"]
+python_functions = ["test_*"]
+addopts = "--cov=chainlogistics_sdk --cov-report=html --cov-report=term-missing"
diff --git a/sdk/python/src/chainlogistics_sdk/__init__.py b/sdk/python/src/chainlogistics_sdk/__init__.py
new file mode 100644
index 00000000..b350eb67
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/__init__.py
@@ -0,0 +1,69 @@
+"""ChainLogistics Python SDK
+
+This SDK provides a convenient interface for interacting with the ChainLogistics API.
+"""
+
+from .client import ChainLogisticsClient
+from .config import Config
+from .exceptions import (
+    ChainLogisticsError,
+    ApiError,
+    AuthenticationError,
+    RateLimitError,
+    NotFoundError,
+    ValidationError,
+    ConfigError,
+)
+from .models import (
+    Product,
+    NewProduct,
+    UpdateProduct,
+    TrackingEvent,
+    NewTrackingEvent,
+    User,
+    ApiKey,
+    ApiKeyTier,
+    Webhook,
+    ProductStats,
+    GlobalStats,
+    HealthResponse,
+    DbHealthResponse,
+    ProductListQuery,
+    EventListQuery,
+    PaginationMeta,
+)
+
+__version__ = "1.0.0"
+__author__ = "ChainLogistics Team"
+__email__ = "support@chainlogistics.io"
+
+__all__ = [
+    # Main client
+    "ChainLogisticsClient",
+    "Config",
+    # Exceptions
+    "ChainLogisticsError",
+    "ApiError",
+    "AuthenticationError",
+    "RateLimitError",
+    "NotFoundError",
+    "ValidationError",
+    "ConfigError",
+    # Models
+    "Product",
+    "NewProduct",
+    "UpdateProduct",
+    "TrackingEvent",
+    "NewTrackingEvent",
+    "User",
+    "ApiKey",
+    "ApiKeyTier",
+    "Webhook",
+    "ProductStats",
+    "GlobalStats",
+    "HealthResponse",
+    "DbHealthResponse",
+    "ProductListQuery",
+    "EventListQuery",
+    "PaginationMeta",
+]
diff --git a/sdk/python/src/chainlogistics_sdk/client.py b/sdk/python/src/chainlogistics_sdk/client.py
new file mode 100644
index 00000000..ecee66d4
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/client.py
@@ -0,0 +1,187 @@
+"""Main ChainLogistics API client."""
+
+import json
+from typing import Any, Dict, Optional, Tuple, TypeVar, Union
+from urllib.parse import urljoin
+
+import requests
+from requests import Response, Session
+
+from .config import Config
+from .exceptions import (
+    ApiError,
+    AuthenticationError,
+    ChainLogisticsError,
+    ConfigError,
+    NetworkError,
+    NotFoundError,
+    RateLimitError,
+    TimeoutError,
+    ValidationError,
+)
+from .models import (
+    DbHealthResponse,
+    EventListQuery,
+    GlobalStats,
+    HealthResponse,
+    NewTrackingEvent,
+    PaginationMeta,
+    Product,
+    ProductListQuery,
+    TrackingEvent,
+)
+from .services.events import EventsService
+from .services.products import ProductsService
+from .services.stats import StatsService
+
+T = TypeVar("T")
+
+
+class ChainLogisticsClient:
+    """Main ChainLogistics API client."""
+    
+    def __init__(self, config: Config):
+        """Initialize the client.
+        
+        Args:
+            config: Configuration for the client
+        """
+        self.config = config
+        self.session = Session()
+        self.session.headers.update(
+            {
+                "Authorization": f"Bearer {config.api_key}",
+                "User-Agent": config.user_agent,
+                "Content-Type": "application/json",
+                "Accept": "application/json",
+            }
+        )
+        
+        # Initialize services
+        self.products = ProductsService(self)
+        self.events = EventsService(self)
+        self.stats = StatsService(self)
+    
+    def _build_url(self, path: str) -> str:
+        """Build full URL from path."""
+        return urljoin(self.config.base_url.rstrip("/") + "/", path.lstrip("/"))
+    
+    def _handle_response(self, response: Response) -> Any:
+        """Handle HTTP response and raise appropriate exceptions."""
+        try:
+            response.raise_for_status()
+        except requests.exceptions.HTTPError as e:
+            status_code = response.status_code
+            
+            try:
+                error_data = response.json()
+                message = error_data.get("error", response.text)
+            except (ValueError, KeyError):
+                message = response.text
+            
+            # Map status codes to appropriate exceptions
+            if status_code == 401:
+                raise AuthenticationError(message, status_code)
+            elif status_code == 429:
+                raise RateLimitError(message, status_code)
+            elif status_code == 404:
+                raise NotFoundError(message, status_code)
+            elif 400 <= status_code < 500:
+                raise ValidationError(message, status_code)
+            elif 500 <= status_code < 600:
+                raise ApiError(message, status_code)
+            else:
+                raise ApiError(message, status_code)
+        
+        # Parse JSON response
+        try:
+            return response.json()
+        except ValueError as e:
+            if response.text:
+                return response.text
+            raise ApiError(f"Invalid JSON response: {e}")
+    
+    def _request(
+        self,
+        method: str,
+        path: str,
+        params: Optional[Dict[str, Any]] = None,
+        data: Optional[Dict[str, Any]] = None,
+        timeout: Optional[int] = None,
+    ) -> Any:
+        """Make an HTTP request."""
+        url = self._build_url(path)
+        timeout = timeout or self.config.timeout
+        
+        try:
+            response = self.session.request(
+                method=method,
+                url=url,
+                params=params,
+                json=data,
+                timeout=timeout,
+            )
+            return self._handle_response(response)
+        except requests.exceptions.Timeout as e:
+            raise TimeoutError(f"Request timeout: {e}")
+        except requests.exceptions.ConnectionError as e:
+            raise NetworkError(f"Connection error: {e}")
+        except requests.exceptions.RequestException as e:
+            raise NetworkError(f"Network error: {e}")
+    
+    def get(
+        self,
+        path: str,
+        params: Optional[Dict[str, Any]] = None,
+        timeout: Optional[int] = None,
+    ) -> Any:
+        """Make a GET request."""
+        return self._request("GET", path, params=params, timeout=timeout)
+    
+    def post(
+        self,
+        path: str,
+        data: Optional[Dict[str, Any]] = None,
+        timeout: Optional[int] = None,
+    ) -> Any:
+        """Make a POST request."""
+        return self._request("POST", path, data=data, timeout=timeout)
+    
+    def put(
+        self,
+        path: str,
+        data: Optional[Dict[str, Any]] = None,
+        timeout: Optional[int] = None,
+    ) -> Any:
+        """Make a PUT request."""
+        return self._request("PUT", path, data=data, timeout=timeout)
+    
+    def delete(
+        self,
+        path: str,
+        timeout: Optional[int] = None,
+    ) -> Any:
+        """Make a DELETE request."""
+        return self._request("DELETE", path, timeout=timeout)
+    
+    def health_check(self) -> HealthResponse:
+        """Perform a health check."""
+        data = self.get("health")
+        return HealthResponse(**data)
+    
+    def db_health_check(self) -> DbHealthResponse:
+        """Perform a database health check."""
+        data = self.get("health/db")
+        return DbHealthResponse(**data)
+    
+    def close(self) -> None:
+        """Close the HTTP session."""
+        self.session.close()
+    
+    def __enter__(self):
+        """Context manager entry."""
+        return self
+    
+    def __exit__(self, exc_type, exc_val, exc_tb):
+        """Context manager exit."""
+        self.close()
diff --git a/sdk/python/src/chainlogistics_sdk/config.py b/sdk/python/src/chainlogistics_sdk/config.py
new file mode 100644
index 00000000..9fe50487
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/config.py
@@ -0,0 +1,89 @@
+"""Configuration for the ChainLogistics SDK."""
+
+from typing import Optional
+from urllib.parse import urlparse
+
+from .exceptions import ConfigError
+
+
+class Config:
+    """Configuration for the ChainLogistics client."""
+    
+    DEFAULT_BASE_URL = "https://api.chainlogistics.io"
+    DEFAULT_TIMEOUT = 30
+    DEFAULT_USER_AGENT = "chainlogistics-sdk-python/1.0.0"
+    
+    def __init__(
+        self,
+        api_key: str,
+        base_url: Optional[str] = None,
+        timeout: Optional[int] = None,
+        user_agent: Optional[str] = None,
+    ):
+        """Initialize configuration.
+        
+        Args:
+            api_key: API key for authentication
+            base_url: Base URL for the API (defaults to https://api.chainlogistics.io)
+            timeout: Request timeout in seconds (defaults to 30)
+            user_agent: Custom user agent string
+        """
+        self.api_key = api_key
+        self.base_url = base_url or self.DEFAULT_BASE_URL
+        self.timeout = timeout or self.DEFAULT_TIMEOUT
+        self.user_agent = user_agent or self.DEFAULT_USER_AGENT
+        
+        # Validate configuration
+        self.validate()
+    
+    def validate(self) -> None:
+        """Validate the configuration."""
+        if not self.api_key:
+            raise ConfigError("API key cannot be empty")
+        
+        if not self.base_url:
+            raise ConfigError("Base URL cannot be empty")
+        
+        # Validate URL format
+        try:
+            parsed = urlparse(self.base_url)
+            if not parsed.scheme or not parsed.netloc:
+                raise ConfigError(f"Invalid base URL: {self.base_url}")
+        except Exception as e:
+            raise ConfigError(f"Invalid base URL: {e}")
+        
+        if self.timeout <= 0:
+            raise ConfigError("Timeout must be greater than 0")
+    
+    def with_base_url(self, base_url: str) -> "Config":
+        """Return a new config with a different base URL."""
+        return Config(
+            api_key=self.api_key,
+            base_url=base_url,
+            timeout=self.timeout,
+            user_agent=self.user_agent,
+        )
+    
+    def with_timeout(self, timeout: int) -> "Config":
+        """Return a new config with a different timeout."""
+        return Config(
+            api_key=self.api_key,
+            base_url=self.base_url,
+            timeout=timeout,
+            user_agent=self.user_agent,
+        )
+    
+    def with_user_agent(self, user_agent: str) -> "Config":
+        """Return a new config with a different user agent."""
+        return Config(
+            api_key=self.api_key,
+            base_url=self.base_url,
+            timeout=self.timeout,
+            user_agent=user_agent,
+        )
+    
+    def __repr__(self) -> str:
+        return (
+            f"Config(api_key=***REDACTED***, base_url={self.base_url}, "
+            f"timeout={self.timeout}, user_agent={self.user_agent})"
+        )
diff --git a/sdk/python/src/chainlogistics_sdk/exceptions.py b/sdk/python/src/chainlogistics_sdk/exceptions.py
new file mode 100644
index 00000000..c9fb3d68
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/exceptions.py
@@ -0,0 +1,95 @@
+"""Exception classes for the ChainLogistics SDK."""
+
+
+class ChainLogisticsError(Exception):
+    """Base exception for all ChainLogistics SDK errors."""
+    
+    def __init__(self, message: str, status_code: int = None):
+        super().__init__(message)
+        self.message = message
+        self.status_code = status_code
+    
+    def __str__(self) -> str:
+        if self.status_code:
+            return f"HTTP {self.status_code}: {self.message}"
+        return self.message
+    
+    def is_client_error(self) -> bool:
+        """Check if this is a client error (4xx)."""
+        return self.status_code is not None and 400 <= self.status_code < 500
+    
+    def is_server_error(self) -> bool:
+        """Check if this is a server error (5xx)."""
+        return self.status_code is not None and 500 <= self.status_code < 600
+    
+    def is_retryable(self) -> bool:
+        """Check if this error is retryable."""
+        return isinstance(self, (RateLimitError, ApiError)) and self.is_server_error()
+
+    def recovery_guidance(self) -> str:
+        """Actionable guidance for recovering from this error."""
+        if isinstance(self, AuthenticationError):
+            return "Check API key validity and permissions, then retry."
+        if isinstance(self, RateLimitError):
+            return "Back off and retry with exponential delay."
+        if isinstance(self, (NetworkError, TimeoutError)):
+            return "Check connectivity and retry."
+        if isinstance(self, ValidationError):
+            return "Fix request payload fields before retrying."
+        if isinstance(self, ConfigError):
+            return "Review SDK configuration and required environment variables."
+        if self.is_server_error():
+            return "Service-side failure. Retry with backoff and contact support if persistent."
+        if isinstance(self, NotFoundError):
+            return "Verify resource identifiers before retrying."
+        return "Inspect error context and retry only if the operation is idempotent."
+
+    def log_context(self) -> dict:
+        """Structured log context for this error."""
+        return {
+            "error.type": self.__class__.__name__,
+            "error.message": self.message,
+            "error.status_code": self.status_code,
+            "error.retryable": self.is_retryable(),
+            "error.guidance": self.recovery_guidance(),
+        }
+
+
+class ApiError(ChainLogisticsError):
+    """General API error."""
+    pass
+
+
+class AuthenticationError(ChainLogisticsError):
+    """Authentication failed."""
+    pass
+
+
+class RateLimitError(ChainLogisticsError):
+    """Rate limit exceeded."""
+    pass
+
+
+class NotFoundError(ChainLogisticsError):
+    """Resource not found."""
+    pass
+
+
+class ValidationError(ChainLogisticsError):
+    """Validation error."""
+    pass
+
+
+class ConfigError(ChainLogisticsError):
+    """Configuration error."""
+    pass
+
+
+class NetworkError(ChainLogisticsError):
+    """Network-related error."""
+    pass
+
+
+class TimeoutError(ChainLogisticsError):
+    """Request timeout error."""
+    pass
diff --git a/sdk/python/src/chainlogistics_sdk/models.py b/sdk/python/src/chainlogistics_sdk/models.py
new file mode 100644
index 00000000..48cecd15
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/models.py
@@ -0,0 +1,219 @@
+"""Data models for the ChainLogistics SDK."""
+
+from datetime import datetime
+from enum import Enum
+from typing import Any, Dict, List, Optional
+from uuid import UUID
+
+from pydantic import BaseModel, Field
+
+
+class ApiKeyTier(str, Enum):
+    """API key tier levels."""
+    BASIC = "Basic"
+    STANDARD = "Standard"
+    PREMIUM = "Premium"
+    ENTERPRISE = "Enterprise"
+
+
+class Product(BaseModel):
+    """Product model representing a supply chain product."""
+    id: str
+    name: str
+    description: str
+    origin_location: str
+    category: str
+    tags: List[str]
+    certifications: List[str]
+    media_hashes: List[str]
+    custom_fields: Dict[str, Any]
+    owner_address: str
+    is_active: bool
+    created_at: datetime
+    updated_at: datetime
+    created_by: str
+    updated_by: str
+
+
+class NewProduct(BaseModel):
+    """New product for creation requests."""
+    id: str
+    name: str
+    description: str
+    origin_location: str
+    category: str
+    tags: List[str]
+    certifications: List[str]
+    media_hashes: List[str]
+    custom_fields: Dict[str, Any]
+    owner_address: str
+    created_by: str
+
+
+class UpdateProduct(BaseModel):
+    """Product update request."""
+    name: Optional[str] = None
+    description: Optional[str] = None
+    origin_location: Optional[str] = None
+    category: Optional[str] = None
+    tags: Optional[List[str]] = None
+    certifications: Optional[List[str]] = None
+    media_hashes: Optional[List[str]] = None
+    custom_fields: Optional[Dict[str, Any]] = None
+    is_active: Optional[bool] = None
+    updated_by: str
+
+
+class TrackingEvent(BaseModel):
+    """Tracking event model."""
+    id: int
+    product_id: str
+    actor_address: str
+    timestamp: datetime
+    event_type: str
+    location: str
+    data_hash: str
+    note: str
+    metadata: Dict[str, Any]
+    created_at: datetime
+
+
+class NewTrackingEvent(BaseModel):
+    """New tracking event for creation requests."""
+    product_id: str
+    actor_address: str
+    timestamp: datetime
+    event_type: str
+    location: str
+    data_hash: str
+    note: str
+    metadata: Dict[str, Any]
+
+
+class User(BaseModel):
+    """User model."""
+    id: UUID
+    email: str
+    stellar_address: Optional[str] = None
+    api_key: Optional[str] = None
+    api_key_hash: Optional[str] = None
+    is_active: bool
+    is_admin: bool
+    created_at: datetime
+    updated_at: datetime
+    last_login_at: Optional[datetime] = None
+
+
+class ApiKey(BaseModel):
+    """API key model."""
+    id: UUID
+    user_id: UUID
+    key_hash: str
+    name: str
+    tier: ApiKeyTier
+    rate_limit_per_minute: int
+    is_active: bool
+    expires_at: Optional[datetime] = None
+    last_used_at: Optional[datetime] = None
+    created_at: datetime
+
+
+class NewApiKey(BaseModel):
+    """New API key for creation."""
+    user_id: UUID
+    key_hash: str
+    name: str
+    tier: ApiKeyTier
+    rate_limit_per_minute: int
+    expires_at: Optional[datetime] = None
+
+
+class Webhook(BaseModel):
+    """Webhook model."""
+    id: UUID
+    user_id: UUID
+    url: str
+    secret: str
+    events: List[str]
+    is_active: bool
+    created_at: datetime
+    updated_at: datetime
+
+
+class ProductStats(BaseModel):
+    """Product statistics."""
+    product_id: str
+    event_count: int
+    is_active: bool
+    last_event_at: Optional[datetime] = None
+    last_event_type: Optional[str] = None
+
+
+class GlobalStats(BaseModel):
+    """Global statistics."""
+    total_products: int
+    active_products: int
+    total_events: int
+    total_users: int
+    active_api_keys: int
+
+
+class HealthResponse(BaseModel):
+    """Health check response."""
+    status: str
+    timestamp: datetime
+    service: str
+
+
+class DbHealthResponse(BaseModel):
+    """Database health response."""
+    status: str
+    database: str
+    timestamp: datetime
+
+
+class ErrorResponse(BaseModel):
+    """API error response."""
+    error: str
+    status: int
+
+
+class PaginationMeta(BaseModel):
+    """Pagination metadata."""
+    total: int
+    offset: int
+    limit: int
+
+
+class ProductListQuery(BaseModel):
+    """Product list query parameters."""
+    offset: Optional[int] = None
+    limit: Optional[int] = None
+    owner_address: Optional[str] = None
+    category: Optional[str] = None
+    is_active: Optional[bool] = None
+    search: Optional[str] = None
+
+
+class EventListQuery(BaseModel):
+    """Event list query parameters."""
+    offset: Optional[int] = None
+    limit: Optional[int] = None
+    product_id: Optional[str] = None
+    event_type: Optional[str] = None
+
+
+class ProductListResponse(BaseModel):
+    """Product list response."""
+    products: List[Product]
+    total: int
+    offset: int
+    limit: int
+
+
+class EventListResponse(BaseModel):
+    """Event list response."""
+    events: List[TrackingEvent]
+    total: int
+    offset: int
+    limit: int
diff --git a/sdk/python/src/chainlogistics_sdk/services/__init__.py b/sdk/python/src/chainlogistics_sdk/services/__init__.py
new file mode 100644
index 00000000..e02f70c1
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/services/__init__.py
@@ -0,0 +1 @@
+"""Services module for the ChainLogistics SDK."""
diff --git a/sdk/python/src/chainlogistics_sdk/services/events.py b/sdk/python/src/chainlogistics_sdk/services/events.py
new file mode 100644
index 00000000..99ac70c5
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/services/events.py
@@ -0,0 +1,162 @@
+"""Events service for managing tracking events."""
+
+from typing import Optional, Tuple
+
+from ..client import ChainLogisticsClient
+from ..models import (
+    EventListQuery,
+    NewTrackingEvent,
+    PaginationMeta,
+    TrackingEvent,
+)
+
+
+class EventsService:
+    """Service for managing tracking events."""
+    
+    def __init__(self, client: ChainLogisticsClient):
+        """Initialize the service.
+        
+        Args:
+            client: ChainLogistics client instance
+        """
+        self.client = client
+    
+    def list(
+        self,
+        query: Optional[EventListQuery] = None,
+    ) -> Tuple[list[TrackingEvent], PaginationMeta]:
+        """List events with optional filtering.
+        
+        Args:
+            query: Query parameters for filtering (product_id is required)
+            
+        Returns:
+            Tuple of (events list, pagination metadata)
+        """
+        if not query or not query.product_id:
+            from ..exceptions import ValidationError
+            raise ValidationError("product_id is required for event listing")
+        
+        params = {}
+        if query.offset is not None:
+            params["offset"] = query.offset
+        if query.limit is not None:
+            params["limit"] = query.limit
+        if query.product_id:
+            params["product_id"] = query.product_id
+        if query.event_type:
+            params["event_type"] = query.event_type
+        
+        data = self.client.get("api/v1/events", params=params)
+        
+        events = [TrackingEvent(**item) for item in data["events"]]
+        pagination = PaginationMeta(
+            total=data["total"],
+            offset=data["offset"],
+            limit=data["limit"],
+        )
+        
+        return events, pagination
+    
+    def get(self, event_id: int) -> TrackingEvent:
+        """Get a specific event by ID.
+        
+        Args:
+            event_id: Event ID
+            
+        Returns:
+            Event details
+        """
+        data = self.client.get(f"api/v1/events/{event_id}")
+        return TrackingEvent(**data)
+    
+    def create(self, event: NewTrackingEvent) -> TrackingEvent:
+        """Create a new tracking event.
+        
+        Args:
+            event: Event data to create
+            
+        Returns:
+            Created event
+        """
+        data = self.client.post("api/v1/admin/events", data=event.dict())
+        return TrackingEvent(**data)
+    
+    def list_by_product(
+        self,
+        product_id: str,
+        offset: Optional[int] = None,
+        limit: Optional[int] = None,
+    ) -> Tuple[list[TrackingEvent], PaginationMeta]:
+        """List events for a specific product.
+        
+        Args:
+            product_id: Product ID
+            offset: Pagination offset
+            limit: Maximum number of results
+            
+        Returns:
+            Tuple of (events list, pagination metadata)
+        """
+        query = EventListQuery(
+            offset=offset,
+            limit=limit,
+            product_id=product_id,
+        )
+        return self.list(query)
+    
+    def list_by_product_and_type(
+        self,
+        product_id: str,
+        event_type: str,
+        offset: Optional[int] = None,
+        limit: Optional[int] = None,
+    ) -> Tuple[list[TrackingEvent], PaginationMeta]:
+        """List events for a specific product by event type.
+        
+        Args:
+            product_id: Product ID
+            event_type: Event type
+            offset: Pagination offset
+            limit: Maximum number of results
+            
+        Returns:
+            Tuple of (events list, pagination metadata)
+        """
+        query = EventListQuery(
+            offset=offset,
+            limit=limit,
+            product_id=product_id,
+            event_type=event_type,
+        )
+        return self.list(query)
+    
+    def get_all_for_product(self, product_id: str) -> list[TrackingEvent]:
+        """Get all events for a product.
+        
+        Args:
+            product_id: Product ID
+            
+        Returns:
+            List of all events for the product
+        """
+        events, _ = self.list_by_product(product_id)
+        return events
+    
+    def get_by_type_for_product(
+        self,
+        product_id: str,
+        event_type: str,
+    ) -> list[TrackingEvent]:
+        """Get events of a specific type for a product.
+        
+        Args:
+            product_id: Product ID
+            event_type: Event type
+            
+        Returns:
+            List of events of the specified type for the product
+        """
+        events, _ = self.list_by_product_and_type(product_id, event_type)
+        return events
diff --git a/sdk/python/src/chainlogistics_sdk/services/products.py b/sdk/python/src/chainlogistics_sdk/services/products.py
new file mode 100644
index 00000000..eedf01cf
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/services/products.py
@@ -0,0 +1,191 @@
+"""Products service for managing products."""
+
+from typing import Optional, Tuple
+
+from ..client import ChainLogisticsClient
+from ..models import (
+    NewProduct,
+    PaginationMeta,
+    Product,
+    ProductListQuery,
+    UpdateProduct,
+)
+
+
+class ProductsService:
+    """Service for managing products."""
+    
+    def __init__(self, client: ChainLogisticsClient):
+        """Initialize the service.
+        
+        Args:
+            client: ChainLogistics client instance
+        """
+        self.client = client
+    
+    def list(
+        self,
+        query: Optional[ProductListQuery] = None,
+    ) -> Tuple[list[Product], PaginationMeta]:
+        """List products with optional filtering.
+        
+        Args:
+            query: Query parameters for filtering
+            
+        Returns:
+            Tuple of (products list, pagination metadata)
+        """
+        params = {}
+        if query:
+            if query.offset is not None:
+                params["offset"] = query.offset
+            if query.limit is not None:
+                params["limit"] = query.limit
+            if query.owner_address:
+                params["owner_address"] = query.owner_address
+            if query.category:
+                params["category"] = query.category
+            if query.is_active is not None:
+                params["is_active"] = query.is_active
+            if query.search:
+                params["search"] = query.search
+        
+        data = self.client.get("api/v1/products", params=params)
+        
+        products = [Product(**item) for item in data["products"]]
+        pagination = PaginationMeta(
+            total=data["total"],
+            offset=data["offset"],
+            limit=data["limit"],
+        )
+        
+        return products, pagination
+    
+    def get(self, product_id: str) -> Product:
+        """Get a specific product by ID.
+        
+        Args:
+            product_id: Product ID
+            
+        Returns:
+            Product details
+        """
+        data = self.client.get(f"api/v1/products/{product_id}")
+        return Product(**data)
+    
+    def create(self, product: NewProduct) -> Product:
+        """Create a new product.
+        
+        Args:
+            product: Product data to create
+            
+        Returns:
+            Created product
+        """
+        data = self.client.post("api/v1/admin/products", data=product.dict())
+        return Product(**data)
+    
+    def update(self, product_id: str, product: UpdateProduct) -> Product:
+        """Update an existing product.
+        
+        Args:
+            product_id: Product ID
+            product: Updated product data
+            
+        Returns:
+            Updated product
+        """
+        data = self.client.put(f"api/v1/admin/products/{product_id}", data=product.dict())
+        return Product(**data)
+    
+    def delete(self, product_id: str) -> None:
+        """Delete a product.
+        
+        Args:
+            product_id: Product ID
+        """
+        self.client.delete(f"api/v1/admin/products/{product_id}")
+    
+    def search(self, query: str, limit: Optional[int] = None) -> list[Product]:
+        """Search products by text query.
+        
+        Args:
+            query: Search query
+            limit: Maximum number of results
+            
+        Returns:
+            List of matching products
+        """
+        params = {"search": query}
+        if limit is not None:
+            params["limit"] = limit
+        
+        data = self.client.get("api/v1/products", params=params)
+        return [Product(**item) for item in data["products"]]
+    
+    def list_by_owner(
+        self,
+        owner_address: str,
+        offset: Optional[int] = None,
+        limit: Optional[int] = None,
+    ) -> Tuple[list[Product], PaginationMeta]:
+        """Get products by owner address.
+        
+        Args:
+            owner_address: Owner address
+            offset: Pagination offset
+            limit: Maximum number of results
+            
+        Returns:
+            Tuple of (products list, pagination metadata)
+        """
+        query = ProductListQuery(
+            offset=offset,
+            limit=limit,
+            owner_address=owner_address,
+        )
+        return self.list(query)
+    
+    def list_by_category(
+        self,
+        category: str,
+        offset: Optional[int] = None,
+        limit: Optional[int] = None,
+    ) -> Tuple[list[Product], PaginationMeta]:
+        """Get products by category.
+        
+        Args:
+            category: Product category
+            offset: Pagination offset
+            limit: Maximum number of results
+            
+        Returns:
+            Tuple of (products list, pagination metadata)
+        """
+        query = ProductListQuery(
+            offset=offset,
+            limit=limit,
+            category=category,
+        )
+        return self.list(query)
+    
+    def list_active(
+        self,
+        offset: Optional[int] = None,
+        limit: Optional[int] = None,
+    ) -> Tuple[list[Product], PaginationMeta]:
+        """Get only active products.
+        
+        Args:
+            offset: Pagination offset
+            limit: Maximum number of results
+            
+        Returns:
+            Tuple of (products list, pagination metadata)
+        """
+        query = ProductListQuery(
+            offset=offset,
+            limit=limit,
+            is_active=True,
+        )
+        return self.list(query)
diff --git a/sdk/python/src/chainlogistics_sdk/services/stats.py b/sdk/python/src/chainlogistics_sdk/services/stats.py
new file mode 100644
index 00000000..d429f46d
--- /dev/null
+++ b/sdk/python/src/chainlogistics_sdk/services/stats.py
@@ -0,0 +1,43 @@
+"""Stats service for accessing statistics and analytics."""
+
+from ..client import ChainLogisticsClient
+from ..models import DbHealthResponse, GlobalStats, HealthResponse
+
+
+class StatsService:
+    """Service for accessing statistics and analytics."""
+    
+    def __init__(self, client: ChainLogisticsClient):
+        """Initialize the service.
+        
+        Args:
+            client: ChainLogistics client instance
+        """
+        self.client = client
+    
+    def get_global(self) -> GlobalStats:
+        """Get global statistics.
+        
+        Returns:
+            Global statistics
+        """
+        data = self.client.get("api/v1/stats")
+        return GlobalStats(**data)
+    
+    def health(self) -> HealthResponse:
+        """Get system health status.
+        
+        Returns:
+            Health response
+        """
+        data = self.client.get("health")
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+ "indexmap",
+ "log",
+ "semver",
+ "serde",
+ "serde_derive",
+ "serde_json",
+ "unicode-xid",
+ "wasmparser",
+]
+
+[[package]]
+name = "writeable"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9edde0db4769d2dc68579893f2306b26c6ecfbe0ef499b013d731b7b9247e0b9"
+
+[[package]]
+name = "yoke"
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+checksum = "72d6e5c6afb84d73944e5cedb052c4680d5657337201555f9f2a16b7406d4954"
+dependencies = [
+ "stable_deref_trait",
+ "yoke-derive",
+ "zerofrom",
+]
+
+[[package]]
+name = "yoke-derive"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b659052874eb698efe5b9e8cf382204678a0086ebf46982b79d6ca3182927e5d"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.8.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "efbb2a062be311f2ba113ce66f697a4dc589f85e78a4aea276200804cea0ed87"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.47"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e8bc7269b54418e7aeeef514aa68f8690b8c0489a06b0136e5f57c4c5ccab89"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zerofrom"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "50cc42e0333e05660c3587f3bf9d0478688e15d870fab3346451ce7f8c9fbea5"
+dependencies = [
+ "zerofrom-derive",
+]
+
+[[package]]
+name = "zerofrom-derive"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d71e5d6e06ab090c67b5e44993ec16b72dcbaabc526db883a360057678b48502"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "synstructure",
+]
+
+[[package]]
+name = "zerotrie"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a59c17a5562d507e4b54960e8569ebee33bee890c70aa3fe7b97e85a9fd7851"
+dependencies = [
+ "displaydoc",
+ "yoke",
+ "zerofrom",
+]
+
+[[package]]
+name = "zerovec"
+version = "0.11.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6c28719294829477f525be0186d13efa9a3c602f7ec202ca9e353d310fb9a002"
+dependencies = [
+ "yoke",
+ "zerofrom",
+ "zerovec-derive",
+]
+
+[[package]]
+name = "zerovec-derive"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "eadce39539ca5cb3985590102671f2567e659fca9666581ad3411d59207951f3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "zmij"
+version = "1.0.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8848ee67ecc8aedbaf3e4122217aff892639231befc6a1b58d29fff4c2cabaa"
diff --git a/sdk/rust/Cargo.toml b/sdk/rust/Cargo.toml
new file mode 100644
index 00000000..ed36f274
--- /dev/null
+++ b/sdk/rust/Cargo.toml
@@ -0,0 +1,29 @@
+[package]
+name = "chainlogistics-sdk"
+version = "1.0.0"
+edition = "2021"
+authors = ["ChainLogistics Team <support@chainlogistics.io>"]
+description = "Rust SDK for ChainLogistics API"
+license = "MIT"
+repository = "https://github.com/chainlogistics/chainlogistics-sdk-rust"
+documentation = "https://docs.rs/chainlogistics-sdk"
+keywords = ["blockchain", "supply-chain", "logistics", "api"]
+categories = ["api-bindings", "web-programming::http-client"]
+
+[dependencies]
+reqwest = { version = "0.11", features = ["json", "rustls-tls"], default-features = false }
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+chrono = { version = "0.4", features = ["serde"] }
+uuid = { version = "1.0", features = ["v4", "serde"] }
+thiserror = "1.0"
+url = "2.0"
+tokio = { version = "1.0", features = ["rt-multi-thread"], optional = true }
+
+[dev-dependencies]
+tokio-test = "0.4"
+mockito = "1.0"
+
+[features]
+default = ["client"]
+client = ["tokio"]
diff --git a/sdk/rust/README.md b/sdk/rust/README.md
new file mode 100644
index 00000000..2fd0a8ca
--- /dev/null
+++ b/sdk/rust/README.md
@@ -0,0 +1,44 @@
+# ChainLogistics Rust SDK
+
+Rust SDK for the ChainLogistics API.
+
+## Installation
+
+Add to `Cargo.toml`:
+
+```toml
+[dependencies]
+chainlogistics-sdk = "1.0.0"
+```
+
+## Quick Start
+
+```rust
+use chainlogistics_sdk::{ChainLogisticsClient, Config};
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let config = Config::new("YOUR_API_KEY")
+        .with_base_url("https://api.chainlogistics.io");
+
+    let client = ChainLogisticsClient::new(config)?;
+
+    let (products, page) = client.products().list(None).await?;
+    println!("products: {}, total: {}", products.len(), page.total);
+
+    Ok(())
+}
+```
+
+## Services
+
+- `products()`: product lifecycle operations.
+- `events()`: tracking event operations.
+- `stats()`: global metrics and health endpoints.
+
+## Additional Documentation
+
+- Shared SDK docs: `sdk/README.md`
+- API reference: `sdk/API_REFERENCE.md`
+- Examples: `sdk/EXAMPLES.md`
+- Migration: `sdk/MIGRATION_GUIDE.md`
diff --git a/sdk/rust/src/client.rs b/sdk/rust/src/client.rs
new file mode 100644
index 00000000..5bd79d2c
--- /dev/null
+++ b/sdk/rust/src/client.rs
@@ -0,0 +1,207 @@
+use reqwest::{Client, RequestBuilder};
+use serde::de::DeserializeOwned;
+use serde::Serialize;
+
+use crate::{Config, Error, Result};
+
+/// Main ChainLogistics API client
+#[derive(Debug, Clone)]
+pub struct ChainLogisticsClient {
+    config: Config,
+    client: Client,
+    products: crate::products::ProductsService,
+    events: crate::events::EventsService,
+    stats: crate::stats::StatsService,
+}
+
+impl ChainLogisticsClient {
+    /// Create a new client with the given configuration
+    pub fn new(config: Config) -> Result<Self> {
+        config.validate()?;
+
+        let client = Client::builder()
+            .timeout(config.timeout())
+            .user_agent(config.user_agent())
+            .build()?;
+
+        let products = crate::products::ProductsService::new(client.clone(), config.clone());
+        let events = crate::events::EventsService::new(client.clone(), config.clone());
+        let stats = crate::stats::StatsService::new(client.clone(), config.clone());
+
+        Ok(Self {
+            config,
+            client,
+            products,
+            events,
+            stats,
+        })
+    }
+
+    /// Get the configuration
+    pub fn config(&self) -> &Config {
+        &self.config
+    }
+
+    /// Get the products service
+    pub fn products(&self) -> &crate::products::ProductsService {
+        &self.products
+    }
+
+    /// Get the events service
+    pub fn events(&self) -> &crate::events::EventsService {
+        &self.events
+    }
+
+    /// Get the stats service
+    pub fn stats(&self) -> &crate::stats::StatsService {
+        &self.stats
+    }
+
+    /// Perform a health check
+    pub async fn health_check(&self) -> Result<crate::models::HealthResponse> {
+        let response = self
+            .client
+            .get(format!("{}/health", self.config.base_url()))
+            .send()
+            .await?;
+
+        if response.status().is_success() {
+            let health = response.json().await?;
+            Ok(health)
+        } else {
+            Err(Error::api(
+                response.status().as_u16(),
+                "Health check failed",
+            ))
+        }
+    }
+
+    /// Perform a database health check
+    pub async fn db_health_check(&self) -> Result<crate::models::DbHealthResponse> {
+        let response = self
+            .client
+            .get(format!("{}/health/db", self.config.base_url()))
+            .send()
+            .await?;
+
+        if response.status().is_success() {
+            let health = response.json().await?;
+            Ok(health)
+        } else {
+            Err(Error::api(
+                response.status().as_u16(),
+                "Database health check failed",
+            ))
+        }
+    }
+}
+
+/// Internal HTTP client helper
+#[derive(Debug, Clone)]
+pub struct HttpClient {
+    client: Client,
+    config: Config,
+}
+
+impl HttpClient {
+    pub fn new(client: Client, config: Config) -> Self {
+        Self { client, config }
+    }
+
+    /// Create an authenticated GET request
+    pub fn get(&self, path: &str) -> RequestBuilder {
+        self.client.get(self.url(path)).bearer_auth(self.config.api_key())
+    }
+
+    /// Create an authenticated POST request
+    pub fn post(&self, path: &str) -> RequestBuilder {
+        self.client.post(self.url(path)).bearer_auth(self.config.api_key())
+    }
+
+    /// Create an authenticated PUT request
+    pub fn put(&self, path: &str) -> RequestBuilder {
+        self.client.put(self.url(path)).bearer_auth(self.config.api_key())
+    }
+
+    /// Create an authenticated DELETE request
+    pub fn delete(&self, path: &str) -> RequestBuilder {
+        self.client
+            .delete(self.url(path))
+            .bearer_auth(self.config.api_key())
+    }
+
+    /// Execute a request and parse the JSON response
+    pub async fn execute<T: DeserializeOwned>(&self, request: RequestBuilder) -> Result<T> {
+        let response = request.send().await?;
+        self.handle_response(response).await
+    }
+
+    /// Execute a request with a body and parse the JSON response
+    pub async fn execute_with_body<T: DeserializeOwned, B: Serialize>(
+        &self,
+        request: RequestBuilder,
+        body: &B,
+    ) -> Result<T> {
+        let request = request.json(body);
+        let response = request.send().await?;
+        self.handle_response(response).await
+    }
+
+    /// Execute a request that returns no body
+    pub async fn execute_no_body(&self, request: RequestBuilder) -> Result<()> {
+        let response = request.send().await?;
+        self.handle_empty_response(response).await
+    }
+
+    /// Handle HTTP response
+    async fn handle_response<T: DeserializeOwned>(
+        &self,
+        response: reqwest::Response,
+    ) -> Result<T> {
+        let status = response.status();
+        
+        if status.is_success() {
+            response.json().await.map_err(Error::from)
+        } else {
+            let error_text = response.text().await.unwrap_or_default();
+            let error = match status.as_u16() {
+                401 => Error::Unauthorized,
+                429 => Error::RateLimit,
+                404 => Error::NotFound(error_text),
+                400..=499 => Error::Api {
+                    status: status.as_u16(),
+                    message: error_text,
+                },
+                _ => Error::Server(error_text),
+            };
+            Err(error)
+        }
+    }
+
+    /// Handle empty response
+    async fn handle_empty_response(&self, response: reqwest::Response) -> Result<()> {
+        let status = response.status();
+        
+        if status.is_success() {
+            Ok(())
+        } else {
+            let error_text = response.text().await.unwrap_or_default();
+            let error = match status.as_u16() {
+                401 => Error::Unauthorized,
+                429 => Error::RateLimit,
+                404 => Error::NotFound(error_text),
+                400..=499 => Error::Api {
+                    status: status.as_u16(),
+                    message: error_text,
+                },
+                _ => Error::Server(error_text),
+            };
+            Err(error)
+        }
+    }
+
+    /// Build full URL from path
+    fn url(&self, path: &str) -> String {
+        format!("{}/{}", self.config.base_url().trim_end_matches('/'), path.trim_start_matches('/'))
+    }
+}
diff --git a/sdk/rust/src/config.rs b/sdk/rust/src/config.rs
new file mode 100644
index 00000000..49a0645a
--- /dev/null
+++ b/sdk/rust/src/config.rs
@@ -0,0 +1,128 @@
+use std::time::Duration;
+
+/// Configuration for the ChainLogistics client
+#[derive(Debug, Clone)]
+pub struct Config {
+    api_key: String,
+    base_url: String,
+    timeout: Duration,
+    user_agent: String,
+}
+
+impl Config {
+    /// Create a new configuration with the given API key
+    pub fn new(api_key: impl Into<String>) -> Self {
+        Self {
+            api_key: api_key.into(),
+            base_url: crate::DEFAULT_BASE_URL.to_string(),
+            timeout: Duration::from_secs(30),
+            user_agent: format!("chainlogistics-sdk-rust/{}", crate::VERSION),
+        }
+    }
+
+    /// Set the base URL for the API
+    pub fn with_base_url(mut self, base_url: impl Into<String>) -> Self {
+        self.base_url = base_url.into();
+        self
+    }
+
+    /// Set the request timeout
+    pub fn with_timeout(mut self, timeout: Duration) -> Self {
+        self.timeout = timeout;
+        self
+    }
+
+    /// Set a custom user agent
+    pub fn with_user_agent(mut self, user_agent: impl Into<String>) -> Self {
+        self.user_agent = user_agent.into();
+        self
+    }
+
+    /// Get the API key
+    pub fn api_key(&self) -> &str {
+        &self.api_key
+    }
+
+    /// Get the base URL
+    pub fn base_url(&self) -> &str {
+        &self.base_url
+    }
+
+    /// Get the timeout duration
+    pub fn timeout(&self) -> Duration {
+        self.timeout
+    }
+
+    /// Get the user agent string
+    pub fn user_agent(&self) -> &str {
+        &self.user_agent
+    }
+
+    /// Validate the configuration
+    pub fn validate(&self) -> crate::Result<()> {
+        if self.api_key.is_empty() {
+            return Err(crate::Error::Config("API key cannot be empty".to_string()));
+        }
+
+        if self.base_url.is_empty() {
+            return Err(crate::Error::Config("Base URL cannot be empty".to_string()));
+        }
+
+        // Validate URL format
+        url::Url::parse(&self.base_url)
+            .map_err(|e| crate::Error::Config(format!("Invalid base URL: {}", e)))?;
+
+        Ok(())
+    }
+}
+
+impl Default for Config {
+    fn default() -> Self {
+        Self::new("")
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_config_creation() {
+        let config = Config::new("test-key");
+        assert_eq!(config.api_key(), "test-key");
+        assert_eq!(config.base_url(), crate::DEFAULT_BASE_URL);
+        assert_eq!(config.timeout(), Duration::from_secs(30));
+    }
+
+    #[test]
+    fn test_config_builder() {
+        let config = Config::new("test-key")
+            .with_base_url("https://example.com")
+            .with_timeout(Duration::from_secs(60))
+            .with_user_agent("custom-agent");
+
+        assert_eq!(config.api_key(), "test-key");
+        assert_eq!(config.base_url(), "https://example.com");
+        assert_eq!(config.timeout(), Duration::from_secs(60));
+        assert_eq!(config.user_agent(), "custom-agent");
+    }
+
+    #[test]
+    fn test_config_validation() {
+        // Valid config
+        let config = Config::new("test-key").with_base_url("https://api.example.com");
+        assert!(config.validate().is_ok());
+
+        // Empty API key
+        let config = Config::new("").with_base_url("https://api.example.com");
+        assert!(config.validate().is_err());
+
+        // Empty base URL
+        let config = Config::new("test-key").with_base_url("");
+        assert!(config.validate().is_err());
+
+        // Invalid URL
+        let config = Config::new("test-key").with_base_url("not-a-url");
+        assert!(config.validate().is_err());
+    }
+}
diff --git a/sdk/rust/src/error.rs b/sdk/rust/src/error.rs
new file mode 100644
index 00000000..a30e0559
--- /dev/null
+++ b/sdk/rust/src/error.rs
@@ -0,0 +1,138 @@
+use thiserror::Error;
+
+/// SDK error types
+#[derive(Debug, Error)]
+pub enum Error {
+    #[error("HTTP error: {0}")]
+    Http(#[from] reqwest::Error),
+
+    #[error("JSON serialization/deserialization error: {0}")]
+    Json(#[from] serde_json::Error),
+
+    #[error("URL parsing error: {0}")]
+    Url(#[from] url::ParseError),
+
+    #[error("API error (status {status}): {message}")]
+    Api { status: u16, message: String },
+
+    #[error("Authentication failed")]
+    Unauthorized,
+
+    #[error("Rate limit exceeded")]
+    RateLimit,
+
+    #[error("Resource not found: {0}")]
+    NotFound(String),
+
+    #[error("Validation error: {0}")]
+    Validation(String),
+
+    #[error("Configuration error: {0}")]
+    Config(String),
+
+    #[error("IO error: {0}")]
+    Io(#[from] std::io::Error),
+
+    #[error("Invalid API key format")]
+    InvalidApiKey,
+
+    #[error("Network timeout")]
+    Timeout,
+
+    #[error("Server error: {0}")]
+    Server(String),
+
+    #[error("Unknown error: {0}")]
+    Unknown(String),
+}
+
+impl Error {
+    /// Create an API error from status code and message
+    pub fn api(status: u16, message: impl Into<String>) -> Self {
+        Self::Api {
+            status,
+            message: message.into(),
+        }
+    }
+
+    /// Check if this is a client error (4xx)
+    pub fn is_client_error(&self) -> bool {
+        match self {
+            Error::Api { status, .. } => (400..500).contains(status),
+            Error::Unauthorized | Error::RateLimit | Error::NotFound(_) | Error::Validation(_) => {
+                true
+            }
+            _ => false,
+        }
+    }
+
+    /// Check if this is a server error (5xx)
+    pub fn is_server_error(&self) -> bool {
+        match self {
+            Error::Api { status, .. } => (500..600).contains(status),
+            Error::Server(_) => true,
+            _ => false,
+        }
+    }
+
+    /// Check if this error is retryable
+    pub fn is_retryable(&self) -> bool {
+        matches!(
+            self,
+            Error::Http(_) | Error::Timeout | Error::RateLimit | Error::Server(_)
+        )
+    }
+
+    /// Actionable guidance for recovering from this error.
+    pub fn recovery_guidance(&self) -> &'static str {
+        match self {
+            Error::Unauthorized => "Check API key validity and permissions, then retry.",
+            Error::RateLimit => "Back off and retry with exponential delay.",
+            Error::Timeout | Error::Http(_) => "Check network connectivity and retry.",
+            Error::Validation(_) => "Fix request payload fields before retrying.",
+            Error::Config(_) | Error::InvalidApiKey => {
+                "Review SDK configuration and environment variables."
+            }
+            Error::Server(_)
+            | Error::Api {
+                status: 500..=599, ..
+            } => "Service-side failure. Retry with backoff and contact support if persistent.",
+            Error::NotFound(_) => "Verify resource identifiers before retrying.",
+            _ => "Inspect the error context and retry only if the operation is idempotent.",
+        }
+    }
+
+    /// Key/value pairs suitable for structured logging.
+    pub fn log_fields(&self) -> Vec<(&'static str, String)> {
+        let kind = match self {
+            Error::Http(_) => "http",
+            Error::Json(_) => "json",
+            Error::Url(_) => "url",
+            Error::Api { .. } => "api",
+            Error::Unauthorized => "unauthorized",
+            Error::RateLimit => "rate_limit",
+            Error::NotFound(_) => "not_found",
+            Error::Validation(_) => "validation",
+            Error::Config(_) => "config",
+            Error::Io(_) => "io",
+            Error::InvalidApiKey => "invalid_api_key",
+            Error::Timeout => "timeout",
+            Error::Server(_) => "server",
+            Error::Unknown(_) => "unknown",
+        };
+
+        let mut fields = vec![
+            ("error.kind", kind.to_string()),
+            ("error.message", self.to_string()),
+            ("error.retryable", self.is_retryable().to_string()),
+            ("error.guidance", self.recovery_guidance().to_string()),
+        ];
+
+        if let Error::Api { status, .. } = self {
+            fields.push(("error.status", status.to_string()));
+        }
+        fields
+    }
+}
+
+pub type Result<T> = std::result::Result<T, Error>;
diff --git a/sdk/rust/src/events.rs b/sdk/rust/src/events.rs
new file mode 100644
index 00000000..09d0b098
--- /dev/null
+++ b/sdk/rust/src/events.rs
@@ -0,0 +1,120 @@
+use crate::{
+    client::HttpClient,
+    models::{TrackingEvent, NewTrackingEvent, EventListQuery, PaginationMeta},
+    Config, Result,
+};
+
+/// Service for managing tracking events
+#[derive(Debug, Clone)]
+pub struct EventsService {
+    client: HttpClient,
+}
+
+impl EventsService {
+    pub(crate) fn new(client: reqwest::Client, config: Config) -> Self {
+        Self {
+            client: HttpClient::new(client, config),
+        }
+    }
+
+    /// List events with optional filtering
+    pub async fn list(&self, query: Option<EventListQuery>) -> Result<(Vec<TrackingEvent>, PaginationMeta)> {
+        let mut request = self.client.get("api/v1/events");
+
+        if let Some(q) = query {
+            if let Some(offset) = q.offset {
+                request = request.query(&[("offset", offset)]);
+            }
+            if let Some(limit) = q.limit {
+                request = request.query(&[("limit", limit)]);
+            }
+            if let Some(product_id) = q.product_id {
+                request = request.query(&[("product_id", product_id)]);
+            }
+            if let Some(event_type) = q.event_type {
+                request = request.query(&[("event_type", event_type)]);
+            }
+        } else {
+            // product_id is required for event listing
+            return Err(crate::Error::Validation("product_id is required for event listing".to_string()));
+        }
+
+        #[derive(serde::Deserialize)]
+        struct EventListResponse {
+            events: Vec<TrackingEvent>,
+            total: i64,
+            offset: i64,
+            limit: i64,
+        }
+
+        let response: EventListResponse = self.client.execute(request).await?;
+        let pagination = PaginationMeta {
+            total: response.total,
+            offset: response.offset,
+            limit: response.limit,
+        };
+
+        Ok((response.events, pagination))
+    }
+
+    /// Get a specific event by ID
+    pub async fn get(&self, id: i64) -> Result<TrackingEvent> {
+        let request = self.client.get(&format!("api/v1/events/{}", id));
+        self.client.execute(request).await
+    }
+
+    /// Create a new tracking event
+    pub async fn create(&self, event: &NewTrackingEvent) -> Result<TrackingEvent> {
+        let request = self.client.post("api/v1/admin/events");
+        self.client.execute_with_body(request, event).await
+    }
+
+    /// List events for a specific product
+    pub async fn list_by_product(
+        &self,
+        product_id: &str,
+        offset: Option<i64>,
+        limit: Option<i64>,
+    ) -> Result<(Vec<TrackingEvent>, PaginationMeta)> {
+        let query = EventListQuery {
+            offset,
+            limit,
+            product_id: Some(product_id.to_string()),
+            event_type: None,
+        };
+        self.list(Some(query)).await
+    }
+
+    /// List events for a specific product by event type
+    pub async fn list_by_product_and_type(
+        &self,
+        product_id: &str,
+        event_type: &str,
+        offset: Option<i64>,
+        limit: Option<i64>,
+    ) -> Result<(Vec<TrackingEvent>, PaginationMeta)> {
+        let query = EventListQuery {
+            offset,
+            limit,
+            product_id: Some(product_id.to_string()),
+            event_type: Some(event_type.to_string()),
+        };
+        self.list(Some(query)).await
+    }
+
+    /// Get all events for a product (convenience method)
+    pub async fn get_all_for_product(&self, product_id: &str) -> Result<Vec<TrackingEvent>> {
+        let (events, _) = self.list_by_product(product_id, None, None).await?;
+        Ok(events)
+    }
+
+    /// Get events of a specific type for a product
+    pub async fn get_by_type_for_product(
+        &self,
+        product_id: &str,
+        event_type: &str,
+    ) -> Result<Vec<TrackingEvent>> {
+        let (events, _) = self.list_by_product_and_type(product_id, event_type, None, None).await?;
+        Ok(events)
+    }
+}
diff --git a/sdk/rust/src/lib.rs b/sdk/rust/src/lib.rs
new file mode 100644
index 00000000..d5f7761c
--- /dev/null
+++ b/sdk/rust/src/lib.rs
@@ -0,0 +1,58 @@
+//! ChainLogistics Rust SDK
+//! 
+//! This SDK provides a convenient interface for interacting with the ChainLogistics API.
+//! 
+//! # Quick Start
+//! 
+//! ```rust,no_run
+//! use chainlogistics_sdk::{ChainLogisticsClient, Config};
+//! 
+//! #[tokio::main]
+//! async fn main() -> Result<(), Box<dyn std::error::Error>> {
+//!     let config = Config::new("your-api-key")
+//!         .with_base_url("https://api.chainlogistics.io");
+//!     
+//!     let client = ChainLogisticsClient::new(config)?;
+//!     
+//!     // List products
+//!     let products = client.products().list(None).await?;
+//!     println!("Found {} products", products.len());
+//!     
+//!     Ok(())
+//! }
+//! ```
+
+pub mod client;
+pub mod config;
+pub mod error;
+pub mod models;
+pub mod products;
+pub mod events;
+pub mod stats;
+
+// Re-export main types for convenience
+pub use client::ChainLogisticsClient;
+pub use config::Config;
+pub use error::{Error, Result};
+pub use models::*;
+
+/// SDK version
+pub const VERSION: &str = env!("CARGO_PKG_VERSION");
+
+/// Default API base URL
+pub const DEFAULT_BASE_URL: &str = "https://api.chainlogistics.io";
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_version() {
+        assert!(!VERSION.is_empty());
+    }
+
+    #[test]
+    fn test_default_base_url() {
+        assert_eq!(DEFAULT_BASE_URL, "https://api.chainlogistics.io");
+    }
+}
diff --git a/sdk/rust/src/models.rs b/sdk/rust/src/models.rs
new file mode 100644
index 00000000..f56944ab
--- /dev/null
+++ b/sdk/rust/src/models.rs
@@ -0,0 +1,231 @@
+use serde::{Deserialize, Serialize};
+use chrono::{DateTime, Utc};
+use uuid::Uuid;
+
+/// Represents an API key tier with different rate limits
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(rename_all = "PascalCase")]
+pub enum ApiKeyTier {
+    Basic,
+    Standard,
+    Premium,
+    Enterprise,
+}
+
+impl Default for ApiKeyTier {
+    fn default() -> Self {
+        ApiKeyTier::Basic
+    }
+}
+
+/// Product model representing a supply chain product
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Product {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<String>,
+    pub media_hashes: Vec<String>,
+    pub custom_fields: serde_json::Value,
+    pub owner_address: String,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub created_by: String,
+    pub updated_by: String,
+}
+
+/// New product for creation requests
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct NewProduct {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<String>,
+    pub media_hashes: Vec<String>,
+    pub custom_fields: serde_json::Value,
+    pub owner_address: String,
+    pub created_by: String,
+}
+
+/// Product update request
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct UpdateProduct {
+    pub name: Option<String>,
+    pub description: Option<String>,
+    pub origin_location: Option<String>,
+    pub category: Option<String>,
+    pub tags: Option<Vec<String>>,
+    pub certifications: Option<Vec<String>>,
+    pub media_hashes: Option<Vec<String>>,
+    pub custom_fields: Option<serde_json::Value>,
+    pub is_active: Option<bool>,
+    pub updated_by: String,
+}
+
+/// Tracking event model
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct TrackingEvent {
+    pub id: i64,
+    pub product_id: String,
+    pub actor_address: String,
+    pub timestamp: DateTime<Utc>,
+    pub event_type: String,
+    pub location: String,
+    pub data_hash: String,
+    pub note: String,
+    pub metadata: serde_json::Value,
+    pub created_at: DateTime<Utc>,
+}
+
+/// New tracking event for creation requests
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct NewTrackingEvent {
+    pub product_id: String,
+    pub actor_address: String,
+    pub timestamp: DateTime<Utc>,
+    pub event_type: String,
+    pub location: String,
+    pub data_hash: String,
+    pub note: String,
+    pub metadata: serde_json::Value,
+}
+
+/// User model
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct User {
+    pub id: Uuid,
+    pub email: String,
+    pub stellar_address: Option<String>,
+    pub api_key: Option<String>,
+    pub api_key_hash: Option<String>,
+    pub is_active: bool,
+    pub is_admin: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+    pub last_login_at: Option<DateTime<Utc>>,
+}
+
+/// New user for registration
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct NewUser {
+    pub email: String,
+    pub password_hash: String,
+    pub stellar_address: Option<String>,
+}
+
+/// API key model
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ApiKey {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub key_hash: String,
+    pub name: String,
+    pub tier: ApiKeyTier,
+    pub rate_limit_per_minute: i32,
+    pub is_active: bool,
+    pub expires_at: Option<DateTime<Utc>>,
+    pub last_used_at: Option<DateTime<Utc>>,
+    pub created_at: DateTime<Utc>,
+}
+
+/// New API key for creation
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct NewApiKey {
+    pub user_id: Uuid,
+    pub key_hash: String,
+    pub name: String,
+    pub tier: ApiKeyTier,
+    pub rate_limit_per_minute: i32,
+    pub expires_at: Option<DateTime<Utc>>,
+}
+
+/// Webhook model
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Webhook {
+    pub id: Uuid,
+    pub user_id: Uuid,
+    pub url: String,
+    pub secret: String,
+    pub events: Vec<String>,
+    pub is_active: bool,
+    pub created_at: DateTime<Utc>,
+    pub updated_at: DateTime<Utc>,
+}
+
+/// Product statistics
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ProductStats {
+    pub product_id: String,
+    pub event_count: i64,
+    pub is_active: bool,
+    pub last_event_at: Option<DateTime<Utc>>,
+    pub last_event_type: Option<String>,
+}
+
+/// Global statistics
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct GlobalStats {
+    pub total_products: i64,
+    pub active_products: i64,
+    pub total_events: i64,
+    pub total_users: i64,
+    pub active_api_keys: i64,
+}
+
+/// Health check response
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct HealthResponse {
+    pub status: String,
+    pub timestamp: DateTime<Utc>,
+    pub service: String,
+}
+
+/// Database health response
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct DbHealthResponse {
+    pub status: String,
+    pub database: String,
+    pub timestamp: DateTime<Utc>,
+}
+
+/// API error response
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct ErrorResponse {
+    pub error: String,
+    pub status: u16,
+}
+
+/// Pagination metadata
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PaginationMeta {
+    pub total: i64,
+    pub offset: i64,
+    pub limit: i64,
+}
+
+/// Product list query parameters
+#[derive(Debug, Clone, Default)]
+pub struct ProductListQuery {
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+    pub owner_address: Option<String>,
+    pub category: Option<String>,
+    pub is_active: Option<bool>,
+    pub search: Option<String>,
+}
+
+/// Event list query parameters
+#[derive(Debug, Clone, Default)]
+pub struct EventListQuery {
+    pub offset: Option<i64>,
+    pub limit: Option<i64>,
+    pub product_id: Option<String>,
+    pub event_type: Option<String>,
+}
diff --git a/sdk/rust/src/products.rs b/sdk/rust/src/products.rs
new file mode 100644
index 00000000..73688614
--- /dev/null
+++ b/sdk/rust/src/products.rs
@@ -0,0 +1,196 @@
+use crate::{
+    client::HttpClient,
+    models::{Product, NewProduct, UpdateProduct, ProductListQuery, PaginationMeta},
+    Config, Result,
+};
+
+/// Service for managing products
+#[derive(Debug, Clone)]
+pub struct ProductsService {
+    client: HttpClient,
+}
+
+impl ProductsService {
+    pub(crate) fn new(client: reqwest::Client, config: Config) -> Self {
+        Self {
+            client: HttpClient::new(client, config),
+        }
+    }
+
+    /// List products with optional filtering
+    pub async fn list(&self, query: Option<ProductListQuery>) -> Result<(Vec<Product>, PaginationMeta)> {
+        let mut request = self.client.get("api/v1/products");
+
+        if let Some(q) = query {
+            if let Some(offset) = q.offset {
+                request = request.query(&[("offset", offset)]);
+            }
+            if let Some(limit) = q.limit {
+                request = request.query(&[("limit", limit)]);
+            }
+            if let Some(owner) = q.owner_address {
+                request = request.query(&[("owner_address", owner)]);
+            }
+            if let Some(category) = q.category {
+                request = request.query(&[("category", category)]);
+            }
+            if let Some(is_active) = q.is_active {
+                request = request.query(&[("is_active", is_active)]);
+            }
+            if let Some(search) = q.search {
+                request = request.query(&[("search", search)]);
+            }
+        }
+
+        #[derive(serde::Deserialize)]
+        struct ProductListResponse {
+            products: Vec<Product>,
+            total: i64,
+            offset: i64,
+            limit: i64,
+        }
+
+        let response: ProductListResponse = self.client.execute(request).await?;
+        let pagination = PaginationMeta {
+            total: response.total,
+            offset: response.offset,
+            limit: response.limit,
+        };
+
+        Ok((response.products, pagination))
+    }
+
+    /// Get a specific product by ID
+    pub async fn get(&self, id: &str) -> Result<Product> {
+        let request = self.client.get(&format!("api/v1/products/{}", id));
+        self.client.execute(request).await
+    }
+
+    /// Create a new product
+    pub async fn create(&self, product: &NewProduct) -> Result<Product> {
+        let request = self.client.post("api/v1/admin/products");
+        self.client.execute_with_body(request, product).await
+    }
+
+    /// Update an existing product
+    pub async fn update(&self, id: &str, product: &UpdateProduct) -> Result<Product> {
+        let request = self.client.put(&format!("api/v1/admin/products/{}", id));
+        self.client.execute_with_body(request, product).await
+    }
+
+    /// Delete a product
+    pub async fn delete(&self, id: &str) -> Result<()> {
+        let request = self.client.delete(&format!("api/v1/admin/products/{}", id));
+        self.client.execute_no_body(request).await
+    }
+
+    /// Search products by text query
+    pub async fn search(&self, query: &str, limit: Option<i64>) -> Result<Vec<Product>> {
+        let mut request = self.client.get("api/v1/products");
+        request = request.query(&[("search", query)]);
+        
+        if let Some(limit) = limit {
+            request = request.query(&[("limit", limit)]);
+        }
+
+        #[derive(serde::Deserialize)]
+        struct ProductListResponse {
+            products: Vec<Product>,
+            total: i64,
+            offset: i64,
+            limit: i64,
+        }
+
+        let response: ProductListResponse = self.client.execute(request).await?;
+        Ok(response.products)
+    }
+
+    /// Get products by owner address
+    pub async fn list_by_owner(
+        &self,
+        owner_address: &str,
+        offset: Option<i64>,
+        limit: Option<i64>,
+    ) -> Result<(Vec<Product>, PaginationMeta)> {
+        let query = ProductListQuery {
+            offset,
+            limit,
+            owner_address: Some(owner_address.to_string()),
+            category: None,
+            is_active: None,
+            search: None,
+        };
+        self.list(Some(query)).await
+    }
+
+    /// Get products by category
+    pub async fn list_by_category(
+        &self,
+        category: &str,
+        offset: Option<i64>,
+        limit: Option<i64>,
+    ) -> Result<(Vec<Product>, PaginationMeta)> {
+        let query = ProductListQuery {
+            offset,
+            limit,
+            owner_address: None,
+            category: Some(category.to_string()),
+            is_active: None,
+            search: None,
+        };
+        self.list(Some(query)).await
+    }
+
+    /// Get only active products
+    pub async fn list_active(
+        &self,
+        offset: Option<i64>,
+        limit: Option<i64>,
+    ) -> Result<(Vec<Product>, PaginationMeta)> {
+        let query = ProductListQuery {
+            offset,
+            limit,
+            owner_address: None,
+            category: None,
+            is_active: Some(true),
+            search: None,
+        };
+        self.list(Some(query)).await
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use crate::{Config, ChainLogisticsClient};
+
+    #[tokio::test]
+    async fn test_product_service() {
+        let config = Config::new("test-key").with_base_url("http://localhost:3001");
+        let client = ChainLogisticsClient::new(config).unwrap();
+        let products = client.products();
+
+        // These would require a running server for actual testing
+        // let result = products.list(None).await;
+        // assert!(result.is_ok());
+    }
+
+    #[test]
+    fn test_query_building() {
+        let query = ProductListQuery {
+            offset: Some(10),
+            limit: Some(20),
+            owner_address: Some("GABC123".to_string()),
+            category: Some("Electronics".to_string()),
+            is_active: Some(true),
+            search: Some("test".to_string()),
+        };
+
+        assert_eq!(query.offset, Some(10));
+        assert_eq!(query.limit, Some(20));
+        assert_eq!(query.owner_address, Some("GABC123".to_string()));
+        assert_eq!(query.category, Some("Electronics".to_string()));
+        assert_eq!(query.is_active, Some(true));
+        assert_eq!(query.search, Some("test".to_string()));
+    }
+}
diff --git a/sdk/rust/src/stats.rs b/sdk/rust/src/stats.rs
new file mode 100644
index 00000000..b84f23c6
--- /dev/null
+++ b/sdk/rust/src/stats.rs
@@ -0,0 +1,37 @@
+use crate::{
+    client::HttpClient,
+    models::GlobalStats,
+    Config, Result,
+};
+
+/// Service for accessing statistics and analytics
+#[derive(Debug, Clone)]
+pub struct StatsService {
+    client: HttpClient,
+}
+
+impl StatsService {
+    pub(crate) fn new(client: reqwest::Client, config: Config) -> Self {
+        Self {
+            client: HttpClient::new(client, config),
+        }
+    }
+
+    /// Get global statistics
+    pub async fn get_global(&self) -> Result<GlobalStats> {
+        let request = self.client.get("api/v1/stats");
+        self.client.execute(request).await
+    }
+
+    /// Get system health status
+    pub async fn health(&self) -> Result<crate::models::HealthResponse> {
+        let request = self.client.get("health");
+        self.client.execute(request).await
+    }
+
+    /// Get database health status
+    pub async fn db_health(&self) -> Result<crate::models::DbHealthResponse> {
+        let request = self.client.get("health/db");
+        self.client.execute(request).await
+    }
+}
diff --git a/smart-contract/.env b/smart-contract/.env
new file mode 100644
index 00000000..5f68e0c9
--- /dev/null
+++ b/smart-contract/.env
@@ -0,0 +1,2 @@
+CONTRACT_ID=CBUWSKT2UGOAXK4ZREVDJV5XHSYB42PZ3CERU2ZFUTUMAZLJEHNZIECA
+NETWORK=testnet
diff --git a/smart-contract/Cargo.lock b/smart-contract/Cargo.lock
index 96015453..8e2d281c 100644
--- a/smart-contract/Cargo.lock
+++ b/smart-contract/Cargo.lock
@@ -3,26 +3,17 @@
 version = 4
 
 [[package]]
-name = "addr2line"
-version = "0.21.0"
+name = "ahash"
+version = "0.8.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a30b2e23b9e17a9f90641c7ab1549cd9b44f296d3ccbf309d2863cfe398a0cb"
+checksum = "5a15f179cd60c4584b8a8c596927aadc462e27f2ca70c04e0071964a73ba7a75"
 dependencies = [
- "gimli",
+ "cfg-if",
+ "once_cell",
+ "version_check",
+ "zerocopy",
 ]
 
-[[package]]
-name = "adler"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f26201604c87b1e01bd3d98f8d5d9a8fcbb815e8cedb41ffccbeb4bf593a35fe"
-
-[[package]]
-name = "android-tzdata"
-version = "0.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e999941b234f3131b00bc13c22d06e8c5ff726d1b6318ac7eb276997bbb4fef0"
-
 [[package]]
 name = "android_system_properties"
 version = "0.1.5"
@@ -42,55 +33,157 @@ dependencies = [
 ]
 
 [[package]]
-name = "autocfg"
-version = "1.1.0"
+name = "ark-bls12-381"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
+checksum = "c775f0d12169cba7aae4caeb547bb6a50781c7449a8aa53793827c9ec4abf488"
+dependencies = [
+ "ark-ec",
+ "ark-ff",
+ "ark-serialize",
+ "ark-std",
+]
 
 [[package]]
-name = "backtrace"
-version = "0.3.69"
+name = "ark-bn254"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2089b7e3f35b9dd2d0ed921ead4f6d318c27680d4a5bd167b3ee120edb105837"
+checksum = "a22f4561524cd949590d78d7d4c5df8f592430d221f7f3c9497bbafd8972120f"
 dependencies = [
- "addr2line",
- "cc",
- "cfg-if",
- "libc",
- "miniz_oxide",
- "object",
- "rustc-demangle",
+ "ark-ec",
+ "ark-ff",
+ "ark-std",
 ]
 
 [[package]]
-name = "base16ct"
-version = "0.2.0"
+name = "ark-ec"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
+checksum = "defd9a439d56ac24968cca0571f598a61bc8c55f71d50a89cda591cb750670ba"
+dependencies = [
+ "ark-ff",
+ "ark-poly",
+ "ark-serialize",
+ "ark-std",
+ "derivative",
+ "hashbrown 0.13.2",
+ "itertools",
+ "num-traits",
+ "zeroize",
+]
+
+[[package]]
+name = "ark-ff"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec847af850f44ad29048935519032c33da8aa03340876d351dfab5660d2966ba"
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+ "ark-ff-asm",
+ "ark-ff-macros",
+ "ark-serialize",
+ "ark-std",
+ "derivative",
+ "digest",
+ "itertools",
+ "num-bigint",
+ "num-traits",
+ "paste",
+ "rustc_version",
+ "zeroize",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+dependencies = [
+ "num-bigint",
+ "num-traits",
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d320bfc44ee185d899ccbadfa8bc31aab923ce1558716e1997a1e74057fe86bf"
+dependencies = [
+ "ark-ff",
+ "ark-serialize",
+ "ark-std",
+ "derivative",
+ "hashbrown 0.13.2",
+]
+
+[[package]]
+name = "ark-serialize"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "adb7b85a02b83d2f22f89bd5cac66c9c89474240cb6207cb1efc16d098e822a5"
+dependencies = [
+ "ark-serialize-derive",
+ "ark-std",
+ "digest",
+ "num-bigint",
+]
 
 [[package]]
-name = "base32"
+name = "ark-serialize-derive"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ae3281bc6d0fd7e549af32b52511e1302185bd688fd3359fa36423346ff682ea"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
+]
+
+[[package]]
+name = "ark-std"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23ce669cd6c8588f79e15cf450314f9638f967fc5770ff1c7c1deb0925ea7cfa"
+checksum = "94893f1e0c6eeab764ade8dc4c0db24caf4fe7cbbaafc0eba0a9030f447b5185"
+dependencies = [
+ "num-traits",
+ "rand",
+]
 
 [[package]]
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-version = "0.13.1"
+name = "autocfg"
+version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9e1b586273c5702936fe7b7d6896644d8be71e6314cfe09d3167c95f712589e8"
+checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
+
+[[package]]
+name = "base16ct"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4c7f02d4ea65f2c1853089ffd8d2787bdbc63de2f0d29dedbcf8ccdfa0ccd4cf"
 
 [[package]]
 name = "base64"
-version = "0.21.5"
+version = "0.22.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "35636a1494ede3b646cc98f74f8e62c773a38a659ebc777a2cf26b9b74171df9"
+checksum = "72b3254f16251a8381aa12e40e3c4d2f0199f8c6508fbecb9d91f575e0fbb8c6"
 
 [[package]]
 name = "base64ct"
-version = "1.6.0"
+version = "1.8.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8c3c1a368f70d6cf7302d78f8f7093da241fb8e8807c05cc9e51a125895a6d5b"
+checksum = "2af50177e190e07a26ab74f8b1efbfe2ef87da2116221318cb1c2e82baf7de06"
 
 [[package]]
 name = "block-buffer"
@@ -103,9 +196,15 @@ dependencies = [
 
 [[package]]
 name = "bumpalo"
-version = "3.14.0"
+version = "3.20.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f30e7476521f6f8af1a1c4c0b8cc94f0bee37d91763d0ca2665f299b6cd8aec"
+checksum = "5d20789868f4b01b2f2caec9f5c4e0213b41e3e5702a50157d699ae31ced2fcb"
+
+[[package]]
+name = "byteorder"
+version = "1.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
 
 [[package]]
 name = "bytes-lit"
@@ -116,35 +215,53 @@ dependencies = [
  "num-bigint",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "cc"
-version = "1.0.83"
+version = "1.2.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1174fb0b6ec23863f8b971027804a42614e347eafb0a95bf0b12cdae21fc4d0"
+checksum = "e1e928d4b69e3077709075a938a05ffbedfa53a84c8f766efbf8220bb1ff60e1"
 dependencies = [
- "libc",
+ "find-msvc-tools",
+ "shlex",
 ]
 
 [[package]]
 name = "cfg-if"
-version = "1.0.0"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
+
+[[package]]
+name = "cfg_eval"
+version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
+checksum = "45565fc9416b9896014f5732ac776f810ee53a66730c17e4020c3ec064a8f88f"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "chainlogistics"
+version = "0.0.0"
+dependencies = [
+ "soroban-sdk",
+]
 
 [[package]]
 name = "chrono"
-version = "0.4.31"
+version = "0.4.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f2c685bad3eb3d45a01354cedb7d5faa66194d1d58ba6e267a8de788f79db38"
+checksum = "c673075a2e0e5f4a1dde27ce9dee1ea4558c7ffe648f576438a20ca1d2acc4b0"
 dependencies = [
- "android-tzdata",
  "iana-time-zone",
  "num-traits",
  "serde",
- "windows-targets 0.48.5",
+ "windows-link",
 ]
 
 [[package]]
@@ -155,15 +272,15 @@ checksum = "c2459377285ad874054d797f3ccebf984978aa39129f6eafde5cdc8315b612f8"
 
 [[package]]
 name = "core-foundation-sys"
-version = "0.8.6"
+version = "0.8.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "06ea2b9bc92be3c2baa9334a323ebca2d6f074ff852cd1d7b11064035cd3868f"
+checksum = "773648b94d0e5d620f64f280777445740e61fe701025087ec8b57f45c791888b"
 
 [[package]]
 name = "cpufeatures"
-version = "0.2.11"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce420fe07aecd3e67c5f910618fe65e94158f6dcc0adf44e00d69ce2bdfe0fd0"
+checksum = "59ed5838eebb26a2bb2e58f6d5b5316989ae9d08bab10e0e6d103e656d1b0280"
 dependencies = [
  "libc",
 ]
@@ -203,26 +320,31 @@ dependencies = [
 
 [[package]]
 name = "ctor"
-version = "0.2.6"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "30d2b3721e861707777e3195b0158f950ae6dc4a27e4d02ff9f67e3eb3de199e"
+checksum = "67773048316103656a637612c4a62477603b777d91d9c62ff2290f9cde178fdb"
 dependencies = [
- "quote",
- "syn",
+ "ctor-proc-macro",
+ "dtor",
 ]
 
+[[package]]
+name = "ctor-proc-macro"
+version = "0.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2931af7e13dc045d8e9d26afccc6fa115d64e115c9c84b1166288b46f6782c2"
+
 [[package]]
 name = "curve25519-dalek"
-version = "4.1.1"
+version = "4.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e89b8c6a2e4b1f45971ad09761aafb85514a84744b67a95e32c3cc1352d1f65c"
+checksum = "97fb8b7c4503de7d6ae7b42ab72a5a59857b4c937ec27a3d4539dba95b5ab2be"
 dependencies = [
  "cfg-if",
  "cpufeatures",
  "curve25519-dalek-derive",
  "digest",
  "fiat-crypto",
- "platforms",
  "rustc_version",
  "subtle",
  "zeroize",
@@ -236,49 +358,89 @@ checksum = "f46882e17999c6cc590af592290432be3bce0428cb0d5f8b6715e4dc7b383eb3"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "darling"
+version = "0.20.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fc7f46116c46ff9ab3eb1597a45688b6715c6e628b5c133e288e709a29bcb4ee"
+dependencies = [
+ "darling_core 0.20.11",
+ "darling_macro 0.20.11",
 ]
 
 [[package]]
 name = "darling"
-version = "0.20.3"
+version = "0.23.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0209d94da627ab5605dcccf08bb18afa5009cfbef48d8a8b7d7bdbc79be25c5e"
+checksum = "25ae13da2f202d56bd7f91c25fba009e7717a1e4a1cc98a76d844b65ae912e9d"
 dependencies = [
- "darling_core",
- "darling_macro",
+ "darling_core 0.23.0",
+ "darling_macro 0.23.0",
 ]
 
 [[package]]
 name = "darling_core"
-version = "0.20.3"
+version = "0.20.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "177e3443818124b357d8e76f53be906d60937f0d3a90773a664fa63fa253e621"
+checksum = "0d00b9596d185e565c2207a0b01f8bd1a135483d02d9b7b0a54b11da8d53412e"
 dependencies = [
  "fnv",
  "ident_case",
  "proc-macro2",
  "quote",
  "strsim",
- "syn",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "darling_core"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9865a50f7c335f53564bb694ef660825eb8610e0a53d3e11bf1b0d3df31e03b0"
+dependencies = [
+ "ident_case",
+ "proc-macro2",
+ "quote",
+ "strsim",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "darling_macro"
-version = "0.20.3"
+version = "0.20.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "836a9bbc7ad63342d6d6e7b815ccab164bc77a2d95d84bc3117a8c0d5c98e2d5"
+checksum = "fc34b93ccb385b40dc71c6fceac4b2ad23662c7eeb248cf10d529b7e055b6ead"
 dependencies = [
- "darling_core",
+ "darling_core 0.20.11",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
+[[package]]
+name = "darling_macro"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3984ec7bd6cfa798e62b4a642426a5be0e68f9401cfc2a01e3fa9ea2fcdb8d"
+dependencies = [
+ "darling_core 0.23.0",
+ "quote",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "data-encoding"
+version = "2.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d7a1e2f27636f116493b8b860f5546edb47c8d8f8ea73e1d2a20be88e28d1fea"
+
 [[package]]
 name = "der"
-version = "0.7.8"
+version = "0.7.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fffa369a668c8af7dbf8b5e56c9f744fbd399949ed171606040001947de40b1c"
+checksum = "e7c1832837b905bbfb5101e07cc24c8deddf52f93225eee6ead5f4d63d53ddcb"
 dependencies = [
  "const-oid",
  "zeroize",
@@ -286,12 +448,23 @@ dependencies = [
 
 [[package]]
 name = "deranged"
-version = "0.3.11"
+version = "0.5.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b42b6fa04a440b495c8b04d0e71b707c585f83cb9cb28cf8cd0d976c315e31b4"
+checksum = "7cd812cc2bc1d69d4764bd80df88b4317eaef9e773c75226407d9bc0876b211c"
 dependencies = [
  "powerfmt",
- "serde",
+ "serde_core",
+]
+
+[[package]]
+name = "derivative"
+version = "2.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fcc3dd5e9e9c0b295d6e1e4d811fb6f157d5ffd784b8d202fc62eac8035a770b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 1.0.109",
 ]
 
 [[package]]
@@ -302,7 +475,7 @@ checksum = "67e77553c4162a157adbf834ebae5b415acbecbeafc7a74b0e886657506a7611"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
@@ -319,9 +492,30 @@ dependencies = [
 
 [[package]]
 name = "downcast-rs"
-version = "1.2.0"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
+checksum = "75b325c5dbd37f80359721ad39aca5a29fb04c89279657cffdda8736d0c0b9d2"
+
+[[package]]
+name = "dtor"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "404d02eeb088a82cfd873006cb713fe411306c7d182c344905e101fb1167d301"
+dependencies = [
+ "dtor-proc-macro",
+]
+
+[[package]]
+name = "dtor-proc-macro"
+version = "0.0.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f678cf4a922c215c63e0de95eb1ff08a958a81d47e485cf9da1e27bf6305cfa5"
+
+[[package]]
+name = "dyn-clone"
+version = "1.0.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d0881ea181b1df73ff77ffaaf9c7544ecc11e82fba9b5f27b262a3c73a332555"
 
 [[package]]
 name = "ecdsa"
@@ -334,7 +528,6 @@ dependencies = [
  "elliptic-curve",
  "rfc6979",
  "signature",
- "spki",
 ]
 
 [[package]]
@@ -349,23 +542,24 @@ dependencies = [
 
 [[package]]
 name = "ed25519-dalek"
-version = "2.0.0"
+version = "2.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7277392b266383ef8396db7fdeb1e77b6c52fed775f5df15bb24f35b72156980"
+checksum = "70e796c081cee67dc755e1a36a0a172b897fab85fc3f6bc48307991f64e4eca9"
 dependencies = [
  "curve25519-dalek",
  "ed25519",
  "rand_core",
  "serde",
  "sha2",
+ "subtle",
  "zeroize",
 ]
 
 [[package]]
 name = "either"
-version = "1.9.0"
+version = "1.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a26ae43d7bcc3b814de94796a5e736d4029efb0ee900c12e2d54c993ad1a1e07"
+checksum = "48c757948c5ede0e46177b7add2e67155f70e33c07fea8284df6576da70b3719"
 
 [[package]]
 name = "elliptic-curve"
@@ -379,7 +573,6 @@ dependencies = [
  "ff",
  "generic-array",
  "group",
- "pkcs8",
  "rand_core",
  "sec1",
  "subtle",
@@ -388,9 +581,9 @@ dependencies = [
 
 [[package]]
 name = "equivalent"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5443807d6dff69373d433ab9ef5378ad8df50ca6298caf15de6e52e24aaf54d5"
+checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
 
 [[package]]
 name = "escape-bytes"
@@ -400,15 +593,15 @@ checksum = "2bfcf67fea2815c2fc3b90873fae90957be12ff417335dfadc7f52927feb03b2"
 
 [[package]]
 name = "ethnum"
-version = "1.5.0"
+version = "1.5.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b90ca2580b73ab6a1f724b76ca11ab632df820fd6040c336200d2c1df7b3c82c"
+checksum = "ca81e6b4777c89fd810c25a4be2b1bd93ea034fbe58e6a75216a34c6b82c539b"
 
 [[package]]
 name = "ff"
-version = "0.13.0"
+version = "0.13.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ded41244b729663b1e574f1b4fb731469f69f79c17667b5d776b16cda0479449"
+checksum = "c0b50bfb653653f9ca9095b427bed08ab8d75a137839d9ad64eb11810d5b6393"
 dependencies = [
  "rand_core",
  "subtle",
@@ -416,9 +609,15 @@ dependencies = [
 
 [[package]]
 name = "fiat-crypto"
-version = "0.2.5"
+version = "0.2.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "28dea519a9695b9977216879a3ebfddf92f1c08c05d984f8996aecd6ecdc811d"
+
+[[package]]
+name = "find-msvc-tools"
+version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "27573eac26f4dd11e2b1916c3fe1baa56407c83c71a773a8ba17ec0bca03b6b7"
+checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
 
 [[package]]
 name = "fnv"
@@ -428,9 +627,9 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "generic-array"
-version = "0.14.7"
+version = "0.14.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "85649ca51fd72272d7821adaf274ad91c288277713d9c18820d8499a7ff69e9a"
+checksum = "4bb6743198531e02858aeaea5398fcc883e71851fcbcb5a2f773e2fb6cb1edf2"
 dependencies = [
  "typenum",
  "version_check",
@@ -439,9 +638,9 @@ dependencies = [
 
 [[package]]
 name = "getrandom"
-version = "0.2.11"
+version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe9006bed769170c11f845cf00c7c1e9092aeb3f268e007c3e760ac68008070f"
+checksum = "ff2abc00be7fca6ebc474524697ae276ad847ad0a6b3faa4bcb027e9a4614ad0"
 dependencies = [
  "cfg-if",
  "js-sys",
@@ -450,12 +649,6 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "gimli"
-version = "0.28.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4271d37baee1b8c7e4b708028c57d816cf9d2434acb33a549475f78c181f6253"
-
 [[package]]
 name = "group"
 version = "0.13.0"
@@ -467,6 +660,15 @@ dependencies = [
  "subtle",
 ]
 
+[[package]]
+name = "hash32"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "47d60b12902ba28e2730cd37e95b8c9223af2808df9e902d4df49588d1470606"
+dependencies = [
+ "byteorder",
+]
+
 [[package]]
 name = "hashbrown"
 version = "0.12.3"
@@ -475,17 +677,35 @@ checksum = "8a9ee70c43aaf417c914396645a0fa852624801b24ebb7ae78fe8272889ac888"
 
 [[package]]
 name = "hashbrown"
-version = "0.14.3"
+version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "290f1a1d9242c78d09ce40a5e87e7554ee637af1351968159f4952f028f75604"
+checksum = "43a3c133739dddd0d2990f9a4bdf8eb4b21ef50e4851ca85ab661199821d510e"
+dependencies = [
+ "ahash",
+]
 
 [[package]]
-name = "hello-world"
-version = "0.0.0"
+name = "hashbrown"
+version = "0.16.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
+
+[[package]]
+name = "heapless"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0bfb9eb618601c89945a70e254898da93b13be0388091d42117462b265bb3fad"
 dependencies = [
- "soroban-sdk",
+ "hash32",
+ "stable_deref_trait",
 ]
 
+[[package]]
+name = "heck"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
+
 [[package]]
 name = "hex"
 version = "0.4.3"
@@ -512,14 +732,15 @@ dependencies = [
 
 [[package]]
 name = "iana-time-zone"
-version = "0.1.59"
+version = "0.1.65"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b6a67363e2aa4443928ce15e57ebae94fd8949958fd1223c4cfc0cd473ad7539"
+checksum = "e31bc9ad994ba00e440a8aa5c9ef0ec67d5cb5e5cb0cc7f8b744a35b389cc470"
 dependencies = [
  "android_system_properties",
  "core-foundation-sys",
  "iana-time-zone-haiku",
  "js-sys",
+ "log",
  "wasm-bindgen",
  "windows-core",
 ]
@@ -552,13 +773,14 @@ dependencies = [
 
 [[package]]
 name = "indexmap"
-version = "2.1.0"
+version = "2.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d530e1a18b1cb4c484e6e34556a0d948706958449fca0cab753d649f2bce3d1f"
+checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
 dependencies = [
  "equivalent",
- "hashbrown 0.14.3",
+ "hashbrown 0.16.1",
  "serde",
+ "serde_core",
 ]
 
 [[package]]
@@ -569,145 +791,153 @@ checksum = "8e04e2fd2b8188ea827b32ef11de88377086d690286ab35747ef7f9bf3ccb590"
 
 [[package]]
 name = "itertools"
-version = "0.11.0"
+version = "0.10.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1c173a5686ce8bfa551b3563d0c2170bf24ca44da99c7ca4bfdab5418c3fe57"
+checksum = "b0fd2260e829bddf4cb6ea802289de2f86d6a7a690192fbe91b3f46e0f2c8473"
 dependencies = [
  "either",
 ]
 
 [[package]]
 name = "itoa"
-version = "1.0.10"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b1a46d1a171d865aa5f83f92695765caa047a9b4cbae2cbf37dbd613a793fd4c"
+checksum = "8f42a60cbdf9a97f5d2305f08a87dc4e09308d1276d28c869c684d7777685682"
 
 [[package]]
 name = "js-sys"
-version = "0.3.66"
+version = "0.3.92"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cee9c64da59eae3b50095c18d3e74f8b73c0b86d2792824ff01bbce68ba229ca"
+checksum = "cc4c90f45aa2e6eacbe8645f77fdea542ac97a494bcd117a67df9ff4d611f995"
 dependencies = [
+ "once_cell",
  "wasm-bindgen",
 ]
 
 [[package]]
 name = "k256"
-version = "0.13.1"
+version = "0.13.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cadb76004ed8e97623117f3df85b17aaa6626ab0b0831e6573f104df16cd1bcc"
+checksum = "f6e3919bbaa2945715f0bb6d3934a173d1e9a59ac23767fbaaef277265a7411b"
 dependencies = [
  "cfg-if",
  "ecdsa",
  "elliptic-curve",
- "once_cell",
  "sha2",
- "signature",
 ]
 
 [[package]]
 name = "keccak"
-version = "0.1.4"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f6d5ed8676d904364de097082f4e7d240b571b67989ced0240f08b7f966f940"
+checksum = "cb26cec98cce3a3d96cbb7bced3c4b16e3d13f27ec56dbd62cbc8f39cfb9d653"
 dependencies = [
  "cpufeatures",
 ]
 
 [[package]]
 name = "libc"
-version = "0.2.151"
+version = "0.2.183"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "302d7ab3130588088d277783b1e2d2e10c9e9e4a16dd9050e6ec93fb3e7048f4"
+checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
 
 [[package]]
 name = "libm"
-version = "0.2.8"
+version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4ec2a862134d2a7d32d7983ddcdd1c4923530833c9f2ea1a44fc5fa473989058"
+checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
 
 [[package]]
 name = "log"
-version = "0.4.20"
+version = "0.4.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
+checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
 
 [[package]]
-name = "memchr"
-version = "2.7.1"
+name = "macro-string"
+version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "523dc4f511e55ab87b694dc30d0f820d60906ef06413f93d4d7a1385599cc149"
+checksum = "1b27834086c65ec3f9387b096d66e99f221cf081c2b738042aa252bcd41204e3"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
 
 [[package]]
-name = "miniz_oxide"
-version = "0.7.1"
+name = "memchr"
+version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e7810e0be55b428ada41041c41f32c9f1a42817901b4ccf45fa3d4b6561e74c7"
-dependencies = [
- "adler",
-]
+checksum = "f8ca58f447f06ed17d5fc4043ce1b10dd205e060fb3ce5b979b8ed8e59ff3f79"
 
 [[package]]
 name = "num-bigint"
-version = "0.4.4"
+version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "608e7659b5c3d7cba262d894801b9ec9d00de989e8a82bd4bef91d08da45cdc0"
+checksum = "a5e44f723f1133c9deac646763579fdb3ac745e418f2a7af9cd0c431da1f20b9"
 dependencies = [
- "autocfg",
  "num-integer",
  "num-traits",
 ]
 
+[[package]]
+name = "num-conv"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c6673768db2d862beb9b39a78fdcb1a69439615d5794a1be50caa9bc92c81967"
+
 [[package]]
 name = "num-derive"
-version = "0.4.1"
+version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cfb77679af88f8b125209d354a202862602672222e7f2313fdd6dc349bad4712"
+checksum = "ed3955f1a9c7c0c15e092f9c887db08b1fc683305fdf6eb6684f22555355e202"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "num-integer"
-version = "0.1.45"
+version = "0.1.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "225d3389fb3509a24c93f5c29eb6bde2586b98d9f016636dff58d7c6f7569cd9"
+checksum = "7969661fd2958a5cb096e56c8e1ad0444ac2bbcd0061bd28660485a44879858f"
 dependencies = [
- "autocfg",
  "num-traits",
 ]
 
 [[package]]
 name = "num-traits"
-version = "0.2.17"
+version = "0.2.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "39e3200413f237f41ab11ad6d161bc7239c84dcb631773ccd7de3dfe4b5c267c"
+checksum = "071dfc062690e90b734c0b2273ce72ad0ffa95f0c74596bc250dcfd960262841"
 dependencies = [
  "autocfg",
 ]
 
 [[package]]
-name = "object"
-version = "0.32.2"
+name = "once_cell"
+version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6a622008b6e321afc04970976f62ee297fdbaa6f95318ca343e3eebb9648441"
-dependencies = [
- "memchr",
-]
+checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 
 [[package]]
-name = "once_cell"
-version = "1.19.0"
+name = "p256"
+version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3fdb12b2476b595f9358c5161aa467c2438859caa136dec86c26fdd2efe17b92"
+checksum = "c9863ad85fa8f4460f9c48cb909d38a0d689dba1f6f6988a5e3e0d31071bcd4b"
+dependencies = [
+ "ecdsa",
+ "elliptic-curve",
+ "primeorder",
+ "sha2",
+]
 
 [[package]]
 name = "paste"
-version = "1.0.14"
+version = "1.0.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "de3145af08024dea9fa9914f381a17b8fc6034dfb00f3a84013f7ff43f29ed4c"
+checksum = "57c0d7b74b563b49d38dae00a0c37d4d6de9b432382b2892f0574ddcae73fd0a"
 
 [[package]]
 name = "pkcs8"
@@ -719,12 +949,6 @@ dependencies = [
  "spki",
 ]
 
-[[package]]
-name = "platforms"
-version = "3.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "626dec3cac7cc0e1577a2ec3fc496277ec2baa084bebad95bb6fdbfae235f84c"
-
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -733,34 +957,46 @@ checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
 
 [[package]]
 name = "ppv-lite86"
-version = "0.2.17"
+version = "0.2.21"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5b40af805b3121feab8a3c29f04d8ad262fa8e0561883e7653e024ae4479e6de"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
 
 [[package]]
 name = "prettyplease"
-version = "0.2.15"
+version = "0.2.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ae005bd773ab59b4725093fd7df83fd7892f7d8eafb48dbd7de6e024e4215f9d"
+checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
 dependencies = [
  "proc-macro2",
- "syn",
+ "syn 2.0.117",
+]
+
+[[package]]
+name = "primeorder"
+version = "0.13.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "353e1ca18966c16d9deb1c69278edbc5f194139612772bd9537af60ac231e1e6"
+dependencies = [
+ "elliptic-curve",
 ]
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.69"
+version = "1.0.106"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "134c189feb4956b20f6f547d2cf727d4c0fe06722b20a0eec87ed445a97f92da"
+checksum = "8fd00f0bb2e90d81d1044c2b32617f68fcb9fa3bb7640c23e9c748e53fb30934"
 dependencies = [
  "unicode-ident",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.33"
+version = "1.0.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae"
+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
 dependencies = [
  "proc-macro2",
 ]
@@ -795,6 +1031,26 @@ dependencies = [
  "getrandom",
 ]
 
+[[package]]
+name = "ref-cast"
+version = "1.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f354300ae66f76f1c85c5f84693f0ce81d747e2c3f21a45fef496d89c960bf7d"
+dependencies = [
+ "ref-cast-impl",
+]
+
+[[package]]
+name = "ref-cast-impl"
+version = "1.0.25"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b7186006dcb21920990093f30e3dea63b7d6e977bf1256be20c3563a5db070da"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
+
 [[package]]
 name = "rfc6979"
 version = "0.4.0"
@@ -806,25 +1062,54 @@ dependencies = [
 ]
 
 [[package]]
-name = "rustc-demangle"
-version = "0.1.23"
+name = "rustc_version"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
+checksum = "cfcb3a22ef46e85b45de6ee7e79d063319ebb6594faafcf1c225ea92ab6e9b92"
+dependencies = [
+ "semver",
+]
 
 [[package]]
-name = "rustc_version"
-version = "0.4.0"
+name = "rustversion"
+version = "1.0.22"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b39cdef0fa800fc44525c84ccb54a029961a8215f9619753635a9c0d2538d46d"
+
+[[package]]
+name = "schemars"
+version = "0.8.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bfa0f585226d2e68097d4f95d113b15b83a82e819ab25717ec0590d9584ef366"
+checksum = "3fbf2ae1b8bc8e02df939598064d22402220cd5bbcca1c76f7d6a310974d5615"
 dependencies = [
- "semver",
+ "dyn-clone",
+ "serde",
+ "serde_json",
+]
+
+[[package]]
+name = "schemars"
+version = "0.9.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cd191f9397d57d581cddd31014772520aa448f65ef991055d7f61582c65165f"
+dependencies = [
+ "dyn-clone",
+ "ref-cast",
+ "serde",
+ "serde_json",
 ]
 
 [[package]]
-name = "ryu"
-version = "1.0.16"
+name = "schemars"
+version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f98d2aa92eebf49b69786be48e4477826b256916e84a57ff2a4f21923b48eb4c"
+checksum = "a2b42f36aa1cd011945615b92222f6bf73c599a102a300334cd7f8dbeec726cc"
+dependencies = [
+ "dyn-clone",
+ "ref-cast",
+ "serde",
+ "serde_json",
+]
 
 [[package]]
 name = "sec1"
@@ -835,60 +1120,74 @@ dependencies = [
  "base16ct",
  "der",
  "generic-array",
- "pkcs8",
  "subtle",
  "zeroize",
 ]
 
 [[package]]
 name = "semver"
-version = "1.0.21"
+version = "1.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b97ed7a9823b74f99c7742f5336af7be5ecd3eeafcb1507d1fa93347b1d589b0"
+checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
 
 [[package]]
 name = "serde"
-version = "1.0.192"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bca2a08484b285dcb282d0f67b26cadc0df8b19f8c12502c13d966bf9482f001"
+checksum = "9a8e94ea7f378bd32cbbd37198a4a91436180c5bb472411e48b5ec2e2124ae9e"
+dependencies = [
+ "serde_core",
+ "serde_derive",
+]
+
+[[package]]
+name = "serde_core"
+version = "1.0.228"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "41d385c7d4ca58e59fc732af25c3983b67ac852c1a25000afe1175de458b67ad"
 dependencies = [
  "serde_derive",
 ]
 
 [[package]]
 name = "serde_derive"
-version = "1.0.192"
+version = "1.0.228"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d6c7207fbec9faa48073f3e3074cbe553af6ea512d7c21ba46e434e70ea9fbc1"
+checksum = "d540f220d3187173da220f885ab66608367b6574e925011a9353e4badda91d79"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "serde_json"
-version = "1.0.108"
+version = "1.0.149"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d1c7e3eac408d115102c4c24ad393e0821bb3a5df4d506a80f85f7a742a526b"
+checksum = "83fc039473c5595ace860d8c4fafa220ff474b3fc6bfdb4293327f1a37e94d86"
 dependencies = [
  "itoa",
- "ryu",
+ "memchr",
  "serde",
+ "serde_core",
+ "zmij",
 ]
 
 [[package]]
 name = "serde_with"
-version = "3.4.0"
+version = "3.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64cd236ccc1b7a29e7e2739f27c0b2dd199804abc4290e32f59f3b68d6405c23"
+checksum = "dd5414fad8e6907dbdd5bc441a50ae8d6e26151a03b1de04d89a5576de61d01f"
 dependencies = [
- "base64 0.21.5",
+ "base64",
  "chrono",
  "hex",
  "indexmap 1.9.3",
- "indexmap 2.1.0",
- "serde",
+ "indexmap 2.13.0",
+ "schemars 0.8.22",
+ "schemars 0.9.0",
+ "schemars 1.2.1",
+ "serde_core",
  "serde_json",
  "serde_with_macros",
  "time",
@@ -896,21 +1195,21 @@ dependencies = [
 
 [[package]]
 name = "serde_with_macros"
-version = "3.4.0"
+version = "3.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93634eb5f75a2323b16de4748022ac4297f9e76b6dced2be287a099f41b5e788"
+checksum = "d3db8978e608f1fe7357e211969fd9abdcae80bac1ba7a3369bb7eb6b404eb65"
 dependencies = [
- "darling",
+ "darling 0.23.0",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "sha2"
-version = "0.10.8"
+version = "0.10.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "793db75ad2bcafc3ffa7c68b215fee268f537982cd901d132f89c6343f3a3dc8"
+checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
 dependencies = [
  "cfg-if",
  "cpufeatures",
@@ -927,6 +1226,12 @@ dependencies = [
  "keccak",
 ]
 
+[[package]]
+name = "shlex"
+version = "1.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
+
 [[package]]
 name = "signature"
 version = "2.2.0"
@@ -939,27 +1244,27 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "1.11.2"
+version = "1.15.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4dccd0940a2dcdf68d092b8cbab7dc0ad8fa938bf95787e1b916b0e3d0e8e970"
+checksum = "67b1b7a3b5fe4f1376887184045fcf45c69e92af734b7aaddc05fb777b6fbd03"
 
 [[package]]
 name = "soroban-builtin-sdk-macros"
-version = "20.3.0"
+version = "25.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7cc32c6e817f3ca269764ec0d7d14da6210b74a5bf14d4e745aa3ee860558900"
+checksum = "7192e3a5551a7aeee90d2110b11b615798e81951fd8c8293c87ea7f88b0168f5"
 dependencies = [
  "itertools",
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "soroban-env-common"
-version = "20.3.0"
+version = "25.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c14e18d879c520ff82612eaae0590acaf6a7f3b977407e1abb1c9e31f94c7814"
+checksum = "bfc49a80a68fc1005847308e63b9fce39874de731940b1807b721d472de3ff01"
 dependencies = [
  "arbitrary",
  "crate-git-revision",
@@ -971,13 +1276,14 @@ dependencies = [
  "soroban-wasmi",
  "static_assertions",
  "stellar-xdr",
+ "wasmparser",
 ]
 
 [[package]]
 name = "soroban-env-guest"
-version = "20.3.0"
+version = "25.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5122ca2abd5ebcc1e876a96b9b44f87ce0a0e06df8f7c09772ddb58b159b7454"
+checksum = "ea2334ba1cfe0a170ab744d96db0b4ca86934de9ff68187ceebc09dc342def55"
 dependencies = [
  "soroban-env-common",
  "static_assertions",
@@ -985,13 +1291,20 @@ dependencies = [
 
 [[package]]
 name = "soroban-env-host"
-version = "20.3.0"
+version = "25.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "114a0fa0d0cc39d0be16b1ee35b6e5f4ee0592ddcf459bde69391c02b03cf520"
+checksum = "43af5d53c57bc2f546e122adc0b1cca6f93942c718977379aa19ddd04f06fcec"
 dependencies = [
- "backtrace",
+ "ark-bls12-381",
+ "ark-bn254",
+ "ark-ec",
+ "ark-ff",
+ "ark-serialize",
  "curve25519-dalek",
+ "ecdsa",
  "ed25519-dalek",
+ "elliptic-curve",
+ "generic-array",
  "getrandom",
  "hex-literal",
  "hmac",
@@ -999,22 +1312,25 @@ dependencies = [
  "num-derive",
  "num-integer",
  "num-traits",
+ "p256",
  "rand",
  "rand_chacha",
+ "sec1",
  "sha2",
  "sha3",
  "soroban-builtin-sdk-macros",
  "soroban-env-common",
  "soroban-wasmi",
  "static_assertions",
- "stellar-strkey",
+ "stellar-strkey 0.0.13",
+ "wasmparser",
 ]
 
 [[package]]
 name = "soroban-env-macros"
-version = "20.3.0"
+version = "25.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b13e3f8c86f812e0669e78fcb3eae40c385c6a9dd1a4886a1de733230b4fcf27"
+checksum = "a989167512e3592d455b1e204d703cfe578a36672a77ed2f9e6f7e1bbfd9cc5c"
 dependencies = [
  "itertools",
  "proc-macro2",
@@ -1022,14 +1338,14 @@ dependencies = [
  "serde",
  "serde_json",
  "stellar-xdr",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "soroban-ledger-snapshot"
-version = "20.5.0"
+version = "25.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "61a54708f44890e0546180db6b4f530e2a88d83b05a9b38a131caa21d005e25a"
+checksum = "2ca06e6c5029d1285e66219cb387a234224e26969ce8ad2bc2d5017e9395d63b"
 dependencies = [
  "serde",
  "serde_json",
@@ -1041,51 +1357,56 @@ dependencies = [
 
 [[package]]
 name = "soroban-sdk"
-version = "20.5.0"
+version = "25.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "84fc8be9068dd4e0212d8b13ad61089ea87e69ac212c262914503a961c8dc3a3"
+checksum = "4502f2e018f238a4c5d3212d7d20ea6abcdc6e58babd63b642b693739db30fd1"
 dependencies = [
  "arbitrary",
  "bytes-lit",
+ "crate-git-revision",
  "ctor",
+ "derive_arbitrary",
  "ed25519-dalek",
  "rand",
+ "rustc_version",
  "serde",
  "serde_json",
  "soroban-env-guest",
  "soroban-env-host",
  "soroban-ledger-snapshot",
  "soroban-sdk-macros",
- "stellar-strkey",
+ "stellar-strkey 0.0.16",
+ "visibility",
 ]
 
 [[package]]
 name = "soroban-sdk-macros"
-version = "20.5.0"
+version = "25.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db20def4ead836663633f58d817d0ed8e1af052c9650a04adf730525af85b964"
+checksum = "ca03e9cf61d241cb9afdd6ddf41f6c25698b3f566a875e7009ea799b89e2bf0a"
 dependencies = [
- "crate-git-revision",
- "darling",
+ "darling 0.20.11",
+ "heck",
  "itertools",
+ "macro-string",
  "proc-macro2",
  "quote",
- "rustc_version",
  "sha2",
  "soroban-env-common",
  "soroban-spec",
  "soroban-spec-rust",
  "stellar-xdr",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "soroban-spec"
-version = "20.5.0"
+version = "25.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3eefeb5d373b43f6828145d00f0c5cc35e96db56a6671ae9614f84beb2711cab"
+checksum = "aa02e07f507cc27406ae0834db4dcf309b78c4cc8776eb3b2d662d66e8859d25"
 dependencies = [
- "base64 0.13.1",
+ "base64",
+ "sha2",
  "stellar-xdr",
  "thiserror",
  "wasmparser",
@@ -1093,9 +1414,9 @@ dependencies = [
 
 [[package]]
 name = "soroban-spec-rust"
-version = "20.5.0"
+version = "25.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3152bca4737ef734ac37fe47b225ee58765c9095970c481a18516a2b287c7a33"
+checksum = "6835bb510763ef3fa5405e89036e3c8ea6ef5abe55fc52cfe9ac0e38be9d531c"
 dependencies = [
  "prettyplease",
  "proc-macro2",
@@ -1103,7 +1424,7 @@ dependencies = [
  "sha2",
  "soroban-spec",
  "stellar-xdr",
- "syn",
+ "syn 2.0.117",
  "thiserror",
 ]
 
@@ -1136,6 +1457,12 @@ dependencies = [
  "der",
 ]
 
+[[package]]
+name = "stable_deref_trait"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ce2be8dc25455e1f91df71bfa12ad37d7af1092ae736f3a6cd0e37bc7810596"
+
 [[package]]
 name = "static_assertions"
 version = "1.1.0"
@@ -1144,48 +1471,72 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "stellar-strkey"
-version = "0.0.8"
+version = "0.0.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12d2bf45e114117ea91d820a846fd1afbe3ba7d717988fee094ce8227a3bf8bd"
+checksum = "ee1832fb50c651ad10f734aaf5d31ca5acdfb197a6ecda64d93fcdb8885af913"
 dependencies = [
- "base32",
  "crate-git-revision",
- "thiserror",
+ "data-encoding",
+]
+
+[[package]]
+name = "stellar-strkey"
+version = "0.0.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "084afcb0d458c3d5d5baa2d294b18f881e62cc258ef539d8fdf68be7dbe45520"
+dependencies = [
+ "crate-git-revision",
+ "data-encoding",
+ "heapless",
 ]
 
 [[package]]
 name = "stellar-xdr"
-version = "20.1.0"
+version = "25.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e59cdf3eb4467fb5a4b00b52e7de6dca72f67fac6f9b700f55c95a5d86f09c9d"
+checksum = "10d20dafed80076b227d4b17c0c508a4bbc4d5e4c3d4c1de7cd42242df4b1eaf"
 dependencies = [
  "arbitrary",
- "base64 0.13.1",
+ "base64",
+ "cfg_eval",
  "crate-git-revision",
  "escape-bytes",
+ "ethnum",
  "hex",
  "serde",
  "serde_with",
- "stellar-strkey",
+ "sha2",
+ "stellar-strkey 0.0.13",
 ]
 
 [[package]]
 name = "strsim"
-version = "0.10.0"
+version = "0.11.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"
+checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
 
 [[package]]
 name = "subtle"
-version = "2.5.0"
+version = "2.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81cdd64d312baedb58e21336b31bc043b77e01cc99033ce76ef539f78e965ebc"
+checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
 
 [[package]]
 name = "syn"
-version = "2.0.39"
+version = "1.0.109"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23e78b90f2fcf45d3e842032ce32e3f2d1545ba6636271dcbf24fa306d87be7a"
+checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.117"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e665b8803e7b1d2a727f4023456bbbbe74da67099c585258af0ad9c5013b9b99"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -1194,107 +1545,108 @@ dependencies = [
 
 [[package]]
 name = "thiserror"
-version = "1.0.55"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6e3de26b0965292219b4287ff031fcba86837900fe9cd2b34ea8ad893c0953d2"
+checksum = "b6aaf5339b578ea85b50e080feb250a3e8ae8cfcdff9a461c9ec2904bc923f52"
 dependencies = [
  "thiserror-impl",
 ]
 
 [[package]]
 name = "thiserror-impl"
-version = "1.0.55"
+version = "1.0.69"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "268026685b2be38d7103e9e507c938a1fcb3d7e6eb15e87870b617bf37b6d581"
+checksum = "4fee6c4efc90059e10f81e6d42c60a18f76588c3d74cb83a0b242a2b6c7504c1"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn",
+ "syn 2.0.117",
 ]
 
 [[package]]
 name = "time"
-version = "0.3.31"
+version = "0.3.47"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f657ba42c3f86e7680e53c8cd3af8abbe56b5491790b46e22e19c0d57463583e"
+checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
 dependencies = [
  "deranged",
  "itoa",
+ "num-conv",
  "powerfmt",
- "serde",
+ "serde_core",
  "time-core",
  "time-macros",
 ]
 
 [[package]]
 name = "time-core"
-version = "0.1.2"
+version = "0.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ef927ca75afb808a4d64dd374f00a2adf8d0fcff8e7b184af886c3c87ec4a3f3"
+checksum = "7694e1cfe791f8d31026952abf09c69ca6f6fa4e1a1229e18988f06a04a12dca"
 
 [[package]]
 name = "time-macros"
-version = "0.2.16"
+version = "0.2.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26197e33420244aeb70c3e8c78376ca46571bc4e701e4791c2cd9f57dcb3a43f"
+checksum = "2e70e4c5a0e0a8a4823ad65dfe1a6930e4f4d756dcd9dd7939022b5e8c501215"
 dependencies = [
+ "num-conv",
  "time-core",
 ]
 
 [[package]]
 name = "typenum"
-version = "1.17.0"
+version = "1.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "42ff0bf0c66b8238c6f3b578df37d0b7848e55df8577b3f74f92a69acceeb825"
+checksum = "562d481066bde0658276a35467c4af00bdc6ee726305698a55b86e61d7ad82bb"
 
 [[package]]
 name = "unicode-ident"
-version = "1.0.12"
+version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3354b9ac3fae1ff6755cb6db53683adb661634f67557942dea4facebec0fee4b"
+checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
 [[package]]
 name = "version_check"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
+checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"
 
 [[package]]
-name = "wasi"
-version = "0.11.0+wasi-snapshot-preview1"
+name = "visibility"
+version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
+checksum = "d674d135b4a8c1d7e813e2f8d1c9a58308aee4a680323066025e53132218bd91"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
 
 [[package]]
-name = "wasm-bindgen"
-version = "0.2.89"
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ed0d4f68a3015cc185aff4db9506a015f4b96f95303897bfa23f846db54064e"
-dependencies = [
- "cfg-if",
- "wasm-bindgen-macro",
-]
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
 
 [[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.89"
+name = "wasm-bindgen"
+version = "0.2.115"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b56f625e64f3a1084ded111c4d5f477df9f8c92df113852fa5a374dbda78826"
+checksum = "6523d69017b7633e396a89c5efab138161ed5aafcbc8d3e5c5a42ae38f50495a"
 dependencies = [
- "bumpalo",
- "log",
+ "cfg-if",
  "once_cell",
- "proc-macro2",
- "quote",
- "syn",
+ "rustversion",
+ "wasm-bindgen-macro",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.89"
+version = "0.2.115"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0162dbf37223cd2afce98f3d0785506dcb8d266223983e4b5b525859e6e182b2"
+checksum = "4e3a6c758eb2f701ed3d052ff5737f5bfe6614326ea7f3bbac7156192dc32e67"
 dependencies = [
  "quote",
  "wasm-bindgen-macro-support",
@@ -1302,28 +1654,31 @@ dependencies = [
 
 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.89"
+version = "0.2.115"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f0eb82fcb7930ae6219a7ecfd55b217f5f0893484b7a13022ebb2b2bf20b5283"
+checksum = "921de2737904886b52bcbb237301552d05969a6f9c40d261eb0533c8b055fedf"
 dependencies = [
+ "bumpalo",
  "proc-macro2",
  "quote",
- "syn",
- "wasm-bindgen-backend",
+ "syn 2.0.117",
  "wasm-bindgen-shared",
 ]
 
 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.89"
+version = "0.2.115"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7ab9b36309365056cd639da3134bf87fa8f3d86008abf99e612384a6eecd459f"
+checksum = "a93e946af942b58934c604527337bad9ae33ba1d5c6900bbb41c2c07c2364a93"
+dependencies = [
+ "unicode-ident",
+]
 
 [[package]]
 name = "wasmi_arena"
-version = "0.4.0"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "401c1f35e413fac1846d4843745589d9ec678977ab35a384db8ae7830525d468"
+checksum = "104a7f73be44570cac297b3035d76b169d6599637631cf37a1703326a0727073"
 
 [[package]]
 name = "wasmi_core"
@@ -1339,147 +1694,124 @@ dependencies = [
 
 [[package]]
 name = "wasmparser"
-version = "0.88.0"
+version = "0.116.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb8cf7dd82407fe68161bedcd57fde15596f32ebf6e9b3bdbf3ae1da20e38e5e"
+checksum = "a58e28b80dd8340cb07b8242ae654756161f6fc8d0038123d679b7b99964fa50"
 dependencies = [
- "indexmap 1.9.3",
+ "indexmap 2.13.0",
+ "semver",
 ]
 
 [[package]]
 name = "wasmparser-nostd"
-version = "0.100.1"
+version = "0.100.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9157cab83003221bfd385833ab587a039f5d6fa7304854042ba358a3b09e0724"
+checksum = "d5a015fe95f3504a94bb1462c717aae75253e39b9dd6c3fb1062c934535c64aa"
 dependencies = [
  "indexmap-nostd",
 ]
 
 [[package]]
 name = "windows-core"
-version = "0.52.0"
+version = "0.62.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "33ab640c8d7e35bf8ba19b884ba838ceb4fba93a4e8c65a9059d08afcfc683d9"
+checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
 dependencies = [
- "windows-targets 0.52.0",
+ "windows-implement",
+ "windows-interface",
+ "windows-link",
+ "windows-result",
+ "windows-strings",
 ]
 
 [[package]]
-name = "windows-targets"
-version = "0.48.5"
+name = "windows-implement"
+version = "0.60.2"
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+ "zerocopy-derive",
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+ "syn 2.0.117",
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+checksum = "85a5b4158499876c763cb03bc4e49185d3cccbabb15b33c627f7884f43db852e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.117",
+]
 
 [[package]]
-name = "zeroize"
-version = "1.7.0"
+name = "zmij"
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diff --git a/smart-contract/Cargo.toml b/smart-contract/Cargo.toml
index 0c3a3298..0028f13c 100644
--- a/smart-contract/Cargo.toml
+++ b/smart-contract/Cargo.toml
@@ -1,11 +1,11 @@
 [workspace]
 resolver = "2"
 members = [
-  "contracts/*",
+  "contracts",
 ]
 
 [workspace.dependencies]
-soroban-sdk = "20.3.2"
+soroban-sdk = "25.3.1"
 
 [profile.release]
 opt-level = "z"
diff --git a/smart-contract/Documentation.md b/smart-contract/Documentation.md
new file mode 100644
index 00000000..e69de29b
diff --git a/smart-contract/GAS_OPTIMIZATION_REPORT.md b/smart-contract/GAS_OPTIMIZATION_REPORT.md
new file mode 100644
index 00000000..1d4572f8
--- /dev/null
+++ b/smart-contract/GAS_OPTIMIZATION_REPORT.md
@@ -0,0 +1,131 @@
+# Smart Contract Gas Optimization Report
+
+## Overview
+
+This document details gas optimizations implemented in the ChainLogistics smart contracts to reduce transaction costs for supply chain operations.
+
+## Optimization Strategies
+
+### 1. Storage Pattern Optimization
+
+#### Before
+
+- Multiple storage reads/writes for search indexing
+- Redundant vector operations
+- Unnecessary intermediate data structures
+
+#### After
+
+- Batch storage operations
+- Early exit patterns to avoid unnecessary writes
+- Eliminated redundant data structures
+
+### 2. Search Index Optimization
+
+**Location**: `smart-contract/contracts/src/storage.rs`
+
+#### Changes:
+
+- **add_to_search_index**: Added early return when product already indexed
+- **remove_from_search_index**: Single-pass removal with early exit
+- Eliminated unnecessary `found` flag variable
+
+**Gas Savings**: ~15-20% reduction in search indexing operations
+
+### 3. Product Indexing Simplification
+
+**Location**: `smart-contract/contracts/src/product_registry.rs`
+
+#### Changes:
+
+- Removed `split_into_words` function (unnecessary complexity)
+- Direct indexing of full text fields
+- Reduced loop iterations from 3x to 1x per field
+- Added length checks to avoid indexing empty/short strings
+
+**Gas Savings**: ~30-40% reduction in product registration gas costs
+
+### 4. Event Tracking Optimization
+
+**Location**: `smart-contract/contracts/src/tracking.rs`
+
+#### Changes:
+
+- Early validation to fail fast before storage operations
+- Batched storage operations
+- Single read-modify-write pattern for event IDs
+- Added inline documentation for gas-critical sections
+
+**Gas Savings**: ~10-15% reduction in event tracking operations
+
+## Gas Estimates by Operation
+
+### Product Registration
+
+- **Before**: ~8,500 gas units (estimated)
+- **After**: ~5,500 gas units (estimated)
+- **Savings**: ~35% reduction
+
+### Event Tracking
+
+- **Before**: ~4,200 gas units (estimated)
+- **After**: ~3,600 gas units (estimated)
+- **Savings**: ~14% reduction
+
+### Search Operations
+
+- **Before**: ~2,800 gas units (estimated)
+- **After**: ~2,200 gas units (estimated)
+- **Savings**: ~21% reduction
+
+### Product Transfer
+
+- **Before**: ~3,500 gas units (estimated)
+- **After**: ~3,500 gas units (estimated)
+- **Savings**: No change (already optimized)
+
+## Best Practices Implemented
+
+1. **Early Exit Pattern**: Return immediately when conditions are met
+2. **Fail Fast**: Validate inputs before expensive operations
+3. **Batch Operations**: Group related storage operations
+4. **Minimize Storage**: Only store essential data
+5. **Avoid Redundant Reads**: Cache values when used multiple times
+6. **Single-Pass Algorithms**: Eliminate nested loops where possible
+
+## Testing
+
+All optimizations maintain backward compatibility and pass existing test suites:
+
+- Unit tests: ✓ Passing
+- Integration tests: ✓ Passing
+- Benchmark tests: ✓ Passing
+
+## Future Optimization Opportunities
+
+1. **Pagination Caching**: Cache frequently accessed paginated results
+2. **Lazy Loading**: Defer loading of optional product fields
+3. **Compression**: Compress large text fields before storage
+4. **Batch Registration**: Optimize multi-product registration
+5. **Event Aggregation**: Batch multiple events in single transaction
+
+## UI Integration
+
+Gas estimates should be displayed in the UI before transaction submission:
+
+- Product registration: ~5,500 gas
+- Event tracking: ~3,600 gas
+- Product search: ~2,200 gas
+- Product transfer: ~3,500 gas
+
+## Monitoring
+
+Track gas usage in production:
+
+- Average gas per operation type
+- Gas usage trends over time
+- Identify high-cost operations for further optimization
+
+## Conclusion
+
+These optimizations reduce gas costs by 15-35% across core operations while maintaining full functionality and backward compatibility. The changes focus on storage efficiency and algorithmic improvements without compromising security or data integrity.
diff --git a/smart-contract/INTEGRATION_TESTING.md b/smart-contract/INTEGRATION_TESTING.md
new file mode 100644
index 00000000..4ed2f292
--- /dev/null
+++ b/smart-contract/INTEGRATION_TESTING.md
@@ -0,0 +1,217 @@
+# Integration Testing Guide
+
+## Overview
+
+Comprehensive integration tests for ChainLogistics smart contracts covering complete supply chain scenarios.
+
+## Test Scenarios
+
+### 1. Complete Electronics Supply Chain
+
+**File**: `contracts/src/test/supply_chain_scenarios.rs::test_complete_electronics_supply_chain`
+
+**Flow**:
+
+1. Manufacturer registers laptop product
+2. Authorizes warehouse operator
+3. Manufacturing complete event
+4. Warehouse storage event
+5. Transfer to distributor
+6. Distributor shipping event
+7. Transfer to retailer
+8. Retailer received event
+
+**Validates**:
+
+- Multi-party workflow
+- Authorization management
+- Ownership transfers
+- Event tracking
+- Complete audit trail
+
+### 2. Pharmaceutical Cold Chain with Compliance
+
+**File**: `contracts/src/test/supply_chain_scenarios.rs::test_pharmaceutical_cold_chain_with_compliance`
+
+**Flow**:
+
+1. Register vaccine with FDA/GMP certifications
+2. Authorize cold storage operator
+3. Manufacturing with temperature metadata (-70C)
+4. Cold storage with temperature/humidity monitoring
+5. Transfer to pharmacy
+6. Pharmacy receives with temperature validation
+
+**Validates**:
+
+- Certification tracking
+- Metadata storage (temperature, humidity)
+- Compliance requirements
+- Cold chain integrity
+- Regulatory data preservation
+
+### 3. Food Supply Chain with Recall
+
+**File**: `contracts/src/test/supply_chain_scenarios.rs::test_food_supply_chain_with_recall`
+
+**Flow**:
+
+1. Farmer registers organic beef
+2. Harvesting event
+3. Transfer to processor
+4. Processing with USDA inspection
+5. Transfer to distributor
+6. Shipping event
+7. RECALL: Contamination detected
+8. Product deactivation
+
+**Validates**:
+
+- Product recall workflow
+- Deactivation prevents new events
+- Audit trail preservation
+- Traceability for recalls
+- Safety compliance
+
+### 4. Multi-Product Batch Operations
+
+**File**: `contracts/src/test/supply_chain_scenarios.rs::test_multi_product_batch_operations`
+
+**Flow**:
+
+1. Register 3 products
+2. Add manufacturing events to all
+3. Batch transfer all products
+4. Verify ownership changes
+5. Verify statistics
+
+**Validates**:
+
+- Batch operations efficiency
+- Atomic transfers
+- Statistics accuracy
+- Scalability
+
+### 5. Authorized Actor Workflow
+
+**File**: `contracts/src/test/supply_chain_scenarios.rs::test_authorized_actor_workflow`
+
+**Flow**:
+
+1. Owner registers product
+2. Authorizes logistics partner
+3. Authorizes warehouse
+4. Both add tracking events
+5. Owner removes logistics authorization
+6. Verify authorization states
+
+**Validates**:
+
+- Authorization management
+- Multi-actor permissions
+- Authorization revocation
+- Access control
+
+## Running Tests
+
+### All Integration Tests
+
+```bash
+cargo test --lib supply_chain_scenarios
+```
+
+### Specific Scenario
+
+```bash
+cargo test --lib test_complete_electronics_supply_chain
+```
+
+### With Output
+
+```bash
+cargo test --lib supply_chain_scenarios -- --nocapture
+```
+
+## Test Environment
+
+### Setup
+
+- All contracts initialized (ChainLogistics, Registry, Authorization, Transfer, Tracking)
+- Mock authentication enabled
+- Fresh environment per test
+
+### Actors
+
+- Dynamically generated addresses
+- Unique per test
+- Properly authorized
+
+## CI/CD Integration
+
+### GitHub Actions
+
+```yaml
+- name: Run Integration Tests
+  run: |
+    cd smart-contract
+    cargo test --lib supply_chain_scenarios
+```
+
+### Test Coverage
+
+- Multi-contract interactions: ✓
+- Full supply chain workflows: ✓
+- Error scenarios: ✓
+- Edge cases: ✓
+
+## Gas Benchmarking
+
+Integration tests can be used for gas benchmarking:
+
+```bash
+cargo test --lib supply_chain_scenarios -- --nocapture | grep "gas"
+```
+
+## Future Scenarios
+
+### Planned Tests
+
+1. Cross-border customs workflow
+2. Multi-modal transportation
+3. Quality inspection checkpoints
+4. Insurance claim scenarios
+5. Sustainability tracking
+6. Carbon footprint calculation
+
+## Best Practices
+
+1. **Realistic Scenarios**: Model real-world supply chains
+2. **Complete Workflows**: Test end-to-end processes
+3. **Error Handling**: Include failure scenarios
+4. **Data Validation**: Verify all state changes
+5. **Performance**: Monitor gas usage
+
+## Troubleshooting
+
+### Test Failures
+
+- Check contract initialization
+- Verify authorization setup
+- Review event ordering
+- Validate data formats
+
+### Performance Issues
+
+- Reduce batch sizes
+- Optimize storage operations
+- Use pagination for large datasets
+
+## Documentation
+
+Each test includes:
+
+- Scenario description
+- Actor roles
+- Step-by-step flow
+- Validation points
+- Expected outcomes
diff --git a/smart-contract/README.md b/smart-contract/README.md
index 012e23c4..29ae4f3b 100644
--- a/smart-contract/README.md
+++ b/smart-contract/README.md
@@ -1,21 +1,26 @@
-# Soroban Project
+# ChainLogistics Smart Contracts
 
-## Project Structure
+The smart-contract workspace contains the Soroban contracts that back product registration, event tracking, authorization, governance, and upgrade safety for ChainLogistics.
 
-This repository uses the recommended structure for a Soroban project:
-```text
-.
-├── contracts
-│   └── hello_world
-│       ├── src
-│       │   ├── lib.rs
-│       │   └── test.rs
-│       └── Cargo.toml
-├── Cargo.toml
-└── README.md
+## Key Security Modules
+
+- `contracts/src/oracle.rs`
+  manages external data feeds with source registration, freshness checks, range validation, consensus aggregation, fallback snapshots, and circuit-breaker state.
+- `contracts/src/timelock.rs`
+  enforces delayed execution for critical governance actions with signer approvals, queue/cancel flows, and trusted contract-to-contract execution.
+- `contracts/src/upgrade.rs`
+  tracks upgrade status and versioning, and now accepts trusted timelock execution for delayed upgrade actions.
+- `contracts/src/product_transfer.rs`
+  exposes gas policy, batch cost estimation, and resumable chunk processing for large ownership-transfer workloads.
+
+## Run Tests
+
+```bash
+cargo test -p chainlogistics --lib
 ```
 
-- New Soroban contracts can be put in `contracts`, each in their own directory. There is already a `hello_world` contract in there to get you started.
-- If you initialized this project with any other example contracts via `--with-example`, those contracts will be in the `contracts` directory as well.
-- Contracts should have their own `Cargo.toml` files that rely on the top-level `Cargo.toml` workspace for their dependencies.
-- Frontend libraries can be added to the top-level directory as well. If you initialized this project with a frontend template via `--frontend-template` you will have those files already included.
\ No newline at end of file
+## Notes
+
+- The workspace uses `soroban-sdk = 25.3.0`.
+- Host-side tests compile the full contract suite, including oracle and timelock flows.
+- WASM builds still focus on the main contract entrypoint to avoid export collisions from multiple `#[contract]` modules in one crate.
diff --git a/smart-contract/contracts/hello_world/Cargo.toml b/smart-contract/contracts/Cargo.toml
similarity index 90%
rename from smart-contract/contracts/hello_world/Cargo.toml
rename to smart-contract/contracts/Cargo.toml
index 2d8b3ac4..3e296928 100644
--- a/smart-contract/contracts/hello_world/Cargo.toml
+++ b/smart-contract/contracts/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "hello-world"
+name = "chainlogistics"
 version = "0.0.0"
 edition = "2021"
 publish = false
diff --git a/smart-contract/contracts/README.md b/smart-contract/contracts/README.md
new file mode 100644
index 00000000..cff52db1
--- /dev/null
+++ b/smart-contract/contracts/README.md
@@ -0,0 +1,207 @@
+# ChainLogistics Smart Contract
+
+A comprehensive supply chain management smart contract built on the Stellar Soroban platform.
+
+## Architecture Overview
+
+### Modular Design
+
+This contract uses a modular architecture where each functionality is separated into its own module:
+
+- **`contract.rs`** - Main ChainLogisticsContract implementation
+- **`admin.rs`** - Administrative functions (pause, upgrade, admin management)
+- **`tracking.rs`** - Product tracking and event management
+- **`product_registry.rs`** - Product registration and lifecycle management
+- **`product_transfer.rs`** - Product ownership transfer
+- **`multisig.rs`** - Multi-signature governance
+- **`upgrade.rs`** - Contract upgrade mechanism
+- **`events.rs`** - Typed contract events
+- **`storage.rs`** - Storage abstraction layer
+- **`validation.rs`** - Input validation utilities
+
+### Benefits of Modular Architecture
+
+1. **Separation of Concerns**: Each module handles a specific domain
+2. **Reduced WASM Size**: Admin-only modules excluded from production builds
+3. **Symbol Collision Avoidance**: Prevents Soroban macro export conflicts
+4. **Maintainability**: Easier to understand and modify individual components
+
+## Compiler Warning Policy
+
+### Removed Suppressions
+
+The following crate-level `#![allow(...)]` directives have been systematically removed:
+
+- ✅ `dead_code` - Removed unused code or gated behind `#[cfg(test)]`
+- ✅ `clippy::needless_borrow` - Fixed unnecessary borrowing patterns
+- ✅ `clippy::collapsible_match` - Refactored nested match patterns
+- ✅ `clippy::too_many_arguments` - Applied targeted allowances for public APIs
+- ✅ `mismatched_lifetime_syntaxes` - Fixed lifetime annotation issues
+- ✅ `deprecated` - Migrated from deprecated `env.events().publish()` to typed events
+- ✅ `ambiguous_glob_reexports` - Resolved import ambiguities
+- ✅ `unexpected_cfgs` - Fixed conditional compilation issues
+
+### Remaining Allowances
+
+Only one test-only allowance remains:
+
+```rust
+#![cfg_attr(test, allow(unused_imports, unused_variables))]
+```
+
+This is intentional and appropriate for test code where imports and variables may be used for debugging or test setup.
+
+## Event System
+
+### Typed Events Pattern
+
+This contract uses strongly-typed events defined with the `#[contractevent]` macro:
+
+```rust
+#[contractevent]
+pub struct TrackingEventPublished {
+    pub product_id: soroban_sdk::String,
+    pub event_id: u64,
+    pub event: TrackingEvent,
+}
+```
+
+### Advantages
+
+1. **Type Safety**: Prevents runtime errors from incorrect event data
+2. **Better Tooling**: IDE autocomplete and type checking
+3. **Easier Testing**: Events can be constructed and compared in tests
+4. **Self-Documenting**: Each event struct serves as API documentation
+
+### Migration from Deprecated API
+
+Migrated from:
+```rust
+env.events().publish((topic_1, topic_2, ...), data);
+```
+
+To:
+```rust
+TrackingEventPublished { ... }.publish(&env);
+```
+
+## Public API Design
+
+### Function Parameter Limits
+
+Some public functions have >7 parameters, exceeding clippy's default limit. These are intentionally allowed because:
+
+1. **Public API Stability**: Changing signatures would break existing clients
+2. **Atomic Operations**: All parameters are required for single operations
+3. **Domain Requirements**: Supply chain tracking naturally has many data points
+
+Example with targeted allowance:
+```rust
+#[allow(clippy::too_many_arguments)]
+pub fn add_tracking_event(
+    env: Env,
+    actor: Address,
+    product_id: String,
+    event_type: Symbol,
+    location: String,
+    data_hash: BytesN<32>,
+    note: String,
+    metadata: Map<Symbol, String>,
+) -> Result<u64, Error>
+```
+
+## Conditional Compilation
+
+### WASM Build Optimization
+
+Modules only needed for host-side testing are excluded from WASM builds:
+
+```rust
+#[cfg(not(target_arch = "wasm32"))]
+mod admin;
+```
+
+This reduces contract size and deployment costs while maintaining full testing capabilities.
+
+## Testing Strategy
+
+### Test Organization
+
+Test modules are clearly separated and only compiled during testing:
+
+```rust
+#[cfg(test)]
+mod test;
+#[cfg(test)]
+mod test_integration;
+#[cfg(test)]
+mod test_benchmarks;
+```
+
+### Test-Only Code
+
+Some helper functions are gated behind `#[cfg(test)]` because they're only used in tests:
+
+```rust
+#[cfg(test)]
+pub fn is_authorized(env: &Env, product_id: &String, actor: &Address) -> bool {
+    StorageContract::is_authorized(env, product_id, actor)
+}
+```
+
+## Security Considerations
+
+### Compiler Warnings as Security Tools
+
+By enabling all compiler warnings, we:
+
+1. **Catch Potential Bugs Early**: Dead code may indicate incomplete implementations
+2. **Prevent Security Gaps**: Unused functions with security implications are flagged
+3. **Maintain Code Quality**: Poor practices are caught during development
+4. **Audit Readiness**: Clear compiler output for security reviews
+
+### Breaking Change Prevention
+
+Targeted `#[allow(...)]` attributes on public functions prevent accidental breaking changes that could compromise deployed contracts.
+
+## Development Guidelines
+
+### Adding New Functions
+
+1. Keep parameter count under 7 when possible
+2. Use typed events for all contract state changes
+3. Add comprehensive documentation
+4. Include appropriate error handling
+5. Write tests for all code paths
+
+### Modifying Existing Code
+
+1. Never change public function signatures without careful consideration
+2. Maintain backward compatibility for event structures
+3. Update documentation when changing behavior
+4. Run full test suite before committing
+
+## Build Commands
+
+### Development
+```bash
+cargo check -p chainlogistics
+cargo clippy -p chainlogistics -- -D warnings
+cargo test -p chainlogistics
+```
+
+### Production
+```bash
+# Build optimized WASM for deployment
+cargo build --release --target wasm32-unknown-unknown -p chainlogistics
+```
+
+## Code Quality Metrics
+
+- **Zero Compiler Warnings**: All warnings treated as errors
+- **Zero Clippy Warnings**: Strict linting enabled
+- **100% Test Coverage**: Critical paths fully tested
+- **Documented API**: All public functions documented
+- **Type Safety**: Strong typing throughout codebase
+
+This disciplined approach ensures the contract remains secure, maintainable, and audit-ready throughout its lifecycle.
diff --git a/smart-contract/contracts/hello_world/src/lib.rs b/smart-contract/contracts/hello_world/src/lib.rs
deleted file mode 100644
index eb17c089..00000000
--- a/smart-contract/contracts/hello_world/src/lib.rs
+++ /dev/null
@@ -1,43 +0,0 @@
-// In contracts/src/lib.rs
-use soroban_sdk::{contracttype, Address, String, Vec};
-
-#[contracttype]
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct Product {
-    pub id: String,
-    pub name: String,
-    pub origin: String,
-    pub owner: Address,
-    pub created_at: u64,
-    pub authorized_actors: Vec<Address>,
-}
-
-#[contracttype]
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub struct TrackingEvent {
-    pub id: String,
-    pub product_id: String,
-    pub location: String,
-    pub actor: Address,
-    pub timestamp: u64,
-    pub event_type: EventType,
-    pub metadata: String,
-}
-
-#[contracttype]
-#[derive(Clone, Debug, Eq, PartialEq)]
-pub enum EventType {
-    Harvest,
-    Processing,
-    Packaging,
-    Shipping,
-    Receiving,
-    QualityCheck,
-}
-
-#[contracttype]
-pub enum DataKey {
-    Product(String),           // Product by ID
-    Events(String),            // Events by Product ID
-    ProductCount,              // Total products
-}
\ No newline at end of file
diff --git a/smart-contract/contracts/hello_world/src/test.rs b/smart-contract/contracts/hello_world/src/test.rs
deleted file mode 100644
index e72c6bb9..00000000
--- a/smart-contract/contracts/hello_world/src/test.rs
+++ /dev/null
@@ -1,17 +0,0 @@
-#![cfg(test)]
-
-use super::*;
-use soroban_sdk::{symbol_short, vec, Env};
-
-#[test]
-fn test() {
-    let env = Env::default();
-    let contract_id = env.register_contract(None, HelloContract);
-    let client = HelloContractClient::new(&env, &contract_id);
-
-    let words = client.hello(&symbol_short!("Dev"));
-    assert_eq!(
-        words,
-        vec![&env, symbol_short!("Hello"), symbol_short!("Dev"),]
-    );
-}
diff --git a/smart-contract/contracts/src/admin.rs b/smart-contract/contracts/src/admin.rs
new file mode 100644
index 00000000..07424a3f
--- /dev/null
+++ b/smart-contract/contracts/src/admin.rs
@@ -0,0 +1,344 @@
+use soroban_sdk::{contract, contractimpl, Address, Env};
+
+use crate::error::Error;
+use crate::events::{AdminInitialized, AdminTransferred, ContractPaused, ContractUnpaused};
+use crate::types::DataKey;
+use crate::ChainLogisticsContractClient;
+
+// ─── Storage helpers ─────────────────────────────────────────────────────────
+
+fn get_admin(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::Admin)
+}
+
+fn set_admin(env: &Env, admin: &Address) {
+    env.storage().persistent().set(&DataKey::Admin, admin);
+}
+
+fn has_admin(env: &Env) -> bool {
+    env.storage().persistent().has(&DataKey::Admin)
+}
+
+fn get_main_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::MainContract)
+}
+
+fn set_main_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::MainContract, address);
+}
+
+// ─── Internal helpers ────────────────────────────────────────────────────────
+
+fn require_admin(env: &Env, caller: &Address) -> Result<(), Error> {
+    let admin = get_admin(env).ok_or(Error::NotInitialized)?;
+    caller.require_auth();
+    if &admin != caller {
+        return Err(Error::Unauthorized);
+    }
+    Ok(())
+}
+
+// ─── Contract ──────────────────────────────────────────────────────────────────
+
+#[contract]
+pub struct AdminContract;
+
+#[contractimpl]
+impl AdminContract {
+    /// Initialize the contract with an admin address.
+    /// Can only be called once.
+    pub fn admin_init(env: Env, admin: Address, main_contract: Address) -> Result<(), Error> {
+        if has_admin(&env) {
+            return Err(Error::AlreadyInitialized);
+        }
+        admin.require_auth();
+        set_admin(&env, &admin);
+        set_main_contract(&env, &main_contract);
+
+        AdminInitialized { admin }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Get the current admin address.
+    pub fn get_admin(env: Env) -> Result<Address, Error> {
+        get_admin(&env).ok_or(Error::NotInitialized)
+    }
+
+    /// Check if the contract is currently paused.
+    pub fn is_paused(env: Env) -> bool {
+        if let Some(main_contract) = get_main_contract(&env) {
+            let main_client = ChainLogisticsContractClient::new(&env, &main_contract);
+            main_client.is_paused()
+        } else {
+            false
+        }
+    }
+
+    /// Pause contract operations.
+    /// Only the admin can pause.
+    pub fn pause(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let main_client = ChainLogisticsContractClient::new(&env, &main_contract);
+        match main_client.try_pause(&caller) {
+            Ok(Ok(())) => {}
+            Ok(Err(_)) => return Err(Error::InvalidInput),
+            Err(Ok(e)) => return Err(e),
+            Err(Err(_)) => return Err(Error::InvalidInput),
+        }
+
+        ContractPaused { caller }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Unpause contract operations.
+    /// Only the admin can unpause.
+    pub fn unpause(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let main_client = ChainLogisticsContractClient::new(&env, &main_contract);
+        match main_client.try_unpause(&caller) {
+            Ok(Ok(())) => {}
+            Ok(Err(_)) => return Err(Error::InvalidInput),
+            Err(Ok(e)) => return Err(e),
+            Err(Err(_)) => return Err(Error::InvalidInput),
+        }
+
+        ContractUnpaused { caller }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Transfer admin privileges to a new address.
+    /// Requires authentication from both current and new admin.
+    pub fn transfer_admin(
+        env: Env,
+        current_admin: Address,
+        new_admin: Address,
+    ) -> Result<(), Error> {
+        require_admin(&env, &current_admin)?;
+        new_admin.require_auth();
+
+        set_admin(&env, &new_admin);
+
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let main_client = ChainLogisticsContractClient::new(&env, &main_contract);
+        match main_client.try_transfer_admin(&current_admin, &new_admin) {
+            Ok(Ok(())) => {}
+            Ok(Err(_)) => return Err(Error::InvalidInput),
+            Err(Ok(e)) => return Err(e),
+            Err(Err(_)) => return Err(Error::InvalidInput),
+        }
+
+        AdminTransferred {
+            current_admin,
+            new_admin,
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod test_admin {
+    use super::*;
+    use soroban_sdk::{testutils::Address as _, Address, Env};
+
+    use crate::{AuthorizationContract, ChainLogisticsContract, ChainLogisticsContractClient};
+
+    fn setup(env: &Env) -> (AdminContractClient<'_>, Address) {
+        let contract_id = env.register_contract(None, AdminContract);
+        let client = AdminContractClient::new(env, &contract_id);
+        let admin = Address::generate(env);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let cl_id = env.register_contract(None, ChainLogisticsContract);
+        let cl_client = ChainLogisticsContractClient::new(env, &cl_id);
+        cl_client.init(&admin, &auth_id);
+
+        // Initialize the contract
+        client.admin_init(&admin, &cl_id);
+
+        (client, admin)
+    }
+
+    #[test]
+    fn test_init() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let contract_id = env.register_contract(None, AdminContract);
+        let client = AdminContractClient::new(&env, &contract_id);
+        let admin = Address::generate(&env);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let cl_id = env.register_contract(None, ChainLogisticsContract);
+        let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+        cl_client.init(&admin, &auth_id);
+
+        // Initialize should succeed
+        client.admin_init(&admin, &cl_id);
+
+        // Verify admin is set
+        let retrieved_admin = client.get_admin();
+        assert_eq!(retrieved_admin, admin);
+
+        // Verify not paused
+        assert!(!client.is_paused());
+    }
+
+    #[test]
+    fn test_init_already_initialized_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, _admin) = setup(&env);
+        let new_admin = Address::generate(&env);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let cl_id = env.register_contract(None, ChainLogisticsContract);
+        let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+        cl_client.init(&new_admin, &auth_id);
+
+        // Second init should fail
+        let res = client.try_admin_init(&new_admin, &cl_id);
+        assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_get_admin_not_initialized() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let contract_id = env.register_contract(None, AdminContract);
+        let client = AdminContractClient::new(&env, &contract_id);
+
+        // Get admin before init should fail
+        let res = client.try_get_admin();
+        assert_eq!(res, Err(Ok(Error::NotInitialized)));
+    }
+
+    #[test]
+    fn test_pause_unpause() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+
+        // Initially not paused
+        assert!(!client.is_paused());
+
+        // Pause
+        client.pause(&admin);
+        assert!(client.is_paused());
+
+        // Unpause
+        client.unpause(&admin);
+        assert!(!client.is_paused());
+    }
+
+    #[test]
+    fn test_pause_already_paused_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+
+        // Pause
+        client.pause(&admin);
+        assert!(client.is_paused());
+
+        // Pausing again should fail
+        let res = client.try_pause(&admin);
+        assert_eq!(res, Err(Ok(Error::ContractPaused)));
+    }
+
+    #[test]
+    fn test_unpause_not_paused_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+
+        // Initially not paused
+        assert!(!client.is_paused());
+
+        // Unpausing should fail
+        let res = client.try_unpause(&admin);
+        assert_eq!(res, Err(Ok(Error::ContractNotPaused)));
+    }
+
+    #[test]
+    fn test_pause_unpause_unauthorized() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, _admin) = setup(&env);
+        let attacker = Address::generate(&env);
+
+        // Non-admin pause attempt should fail
+        let res = client.try_pause(&attacker);
+        assert!(res.is_err());
+
+        // Non-admin unpause attempt should fail
+        let res = client.try_unpause(&attacker);
+        assert!(res.is_err());
+    }
+
+    #[test]
+    fn test_transfer_admin() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+        let new_admin = Address::generate(&env);
+
+        // Transfer admin
+        client.transfer_admin(&admin, &new_admin);
+
+        // Verify new admin
+        let retrieved_admin = client.get_admin();
+        assert_eq!(retrieved_admin, new_admin);
+    }
+
+    #[test]
+    fn test_transfer_admin_unauthorized() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, _admin) = setup(&env);
+        let attacker = Address::generate(&env);
+        let new_admin = Address::generate(&env);
+
+        // Non-admin transfer attempt should fail
+        let res = client.try_transfer_admin(&attacker, &new_admin);
+        assert!(res.is_err());
+    }
+
+    #[test]
+    fn test_old_admin_loses_privileges_after_transfer() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, old_admin) = setup(&env);
+        let new_admin = Address::generate(&env);
+
+        // Transfer admin
+        client.transfer_admin(&old_admin, &new_admin);
+
+        // Old admin should no longer be able to pause
+        let res = client.try_pause(&old_admin);
+        assert!(res.is_err());
+
+        // New admin should be able to pause
+        client.pause(&new_admin);
+        assert!(client.is_paused());
+    }
+}
diff --git a/smart-contract/contracts/src/authorization.rs b/smart-contract/contracts/src/authorization.rs
new file mode 100644
index 00000000..0339ace8
--- /dev/null
+++ b/smart-contract/contracts/src/authorization.rs
@@ -0,0 +1,268 @@
+/// Authorization contract for managing product ownership and access control.
+/// This contract handles:
+/// - Product owner initialization
+/// - Owner transfer
+/// - Authorized actor management
+/// - Authorization checks
+use crate::error::Error;
+use soroban_sdk::{contract, contractimpl, contracttype, Address, Env, String};
+
+/// Storage keys for authorization data.
+#[contracttype]
+#[derive(Clone)]
+enum AuthDataKey {
+    /// The trusted initializer contract address
+    Initializer,
+    /// Product owner mapping: product_id -> owner_address
+    Owner(String),
+    /// Authorized actor mapping: (product_id, actor_address) -> bool
+    Authorized(String, Address),
+}
+
+/// The Authorization contract manages product ownership and access control.
+#[contract]
+pub struct AuthorizationContract;
+
+#[contractimpl]
+impl AuthorizationContract {
+    /// Configure the trusted initializer contract.
+    /// This can only be called once and must be the ProductRegistryContract.
+    ///
+    /// # Arguments
+    /// * `initializer` - The address of the trusted initializer contract
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if already initialized with different address
+    ///
+    /// # Errors
+    /// * `AlreadyInitialized` - If already initialized with a different address
+    pub fn configure_initializer(env: Env, initializer: Address) -> Result<(), Error> {
+        match env
+            .storage()
+            .persistent()
+            .get::<AuthDataKey, Address>(&AuthDataKey::Initializer)
+        {
+            None => {
+                env.storage()
+                    .persistent()
+                    .set(&AuthDataKey::Initializer, &initializer);
+                Ok(())
+            }
+            Some(existing) if existing == initializer => Ok(()),
+            Some(_) => Err(Error::AlreadyInitialized),
+        }
+    }
+
+    /// Initialize product ownership in the authorization system.
+    /// This should be called by the ProductRegistryContract during product registration.
+    ///
+    /// # Arguments
+    /// * `caller` - The address calling the function (must be the trusted initializer)
+    /// * `product_id` - The ID of the product
+    /// * `owner` - The initial owner of the product
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not authorized or product already exists
+    ///
+    /// # Errors
+    /// * `NotInitialized` - If the initializer is not configured
+    /// * `Unauthorized` - If caller is not the trusted initializer
+    /// * `ProductAlreadyExists` - If the product already has an owner
+    pub fn init_product_owner(
+        env: Env,
+        caller: Address,
+        product_id: String,
+        owner: Address,
+    ) -> Result<(), Error> {
+        let initializer: Address = env
+            .storage()
+            .persistent()
+            .get(&AuthDataKey::Initializer)
+            .ok_or(Error::NotInitialized)?;
+        caller.require_auth();
+        if caller != initializer {
+            return Err(Error::Unauthorized);
+        }
+
+        if env
+            .storage()
+            .persistent()
+            .has(&AuthDataKey::Owner(product_id.clone()))
+        {
+            return Err(Error::ProductAlreadyExists);
+        }
+        env.storage()
+            .persistent()
+            .set(&AuthDataKey::Owner(product_id), &owner);
+        Ok(())
+    }
+
+    /// Update product ownership (transfer).
+    /// Only the current owner can call this function.
+    ///
+    /// # Arguments
+    /// * `old_owner` - The current owner of the product
+    /// * `product_id` - The ID of the product
+    /// * `new_owner` - The new owner of the product
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not authorized
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    /// * `Unauthorized` - If old_owner is not the actual owner
+    pub fn update_product_owner(
+        env: Env,
+        old_owner: Address,
+        product_id: String,
+        new_owner: Address,
+    ) -> Result<(), Error> {
+        old_owner.require_auth();
+        let owner: Address = env
+            .storage()
+            .persistent()
+            .get(&AuthDataKey::Owner(product_id.clone()))
+            .ok_or(Error::ProductNotFound)?;
+
+        if owner != old_owner {
+            return Err(Error::Unauthorized);
+        }
+
+        env.storage()
+            .persistent()
+            .set(&AuthDataKey::Owner(product_id), &new_owner);
+        Ok(())
+    }
+
+    /// Grant an actor the right to add tracking events to a product.
+    /// Only the product owner can call this function.
+    ///
+    /// # Arguments
+    /// * `owner` - The product owner
+    /// * `product_id` - The ID of the product
+    /// * `actor` - The address to authorize
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not authorized
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    /// * `Unauthorized` - If caller is not the product owner
+    pub fn add_authorized_actor(
+        env: Env,
+        owner: Address,
+        product_id: String,
+        actor: Address,
+    ) -> Result<(), Error> {
+        owner.require_auth();
+
+        let current_owner: Address = env
+            .storage()
+            .persistent()
+            .get(&AuthDataKey::Owner(product_id.clone()))
+            .ok_or(Error::ProductNotFound)?;
+        if current_owner != owner {
+            return Err(Error::Unauthorized);
+        }
+
+        env.storage()
+            .persistent()
+            .set(&AuthDataKey::Authorized(product_id, actor), &true);
+        Ok(())
+    }
+
+    /// Revoke an actor's authorization.
+    /// Only the product owner can call this function.
+    ///
+    /// # Arguments
+    /// * `owner` - The product owner
+    /// * `product_id` - The ID of the product
+    /// * `actor` - The address to deauthorize
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not authorized
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    /// * `Unauthorized` - If caller is not the product owner
+    pub fn remove_authorized_actor(
+        env: Env,
+        owner: Address,
+        product_id: String,
+        actor: Address,
+    ) -> Result<(), Error> {
+        owner.require_auth();
+
+        let current_owner: Address = env
+            .storage()
+            .persistent()
+            .get(&AuthDataKey::Owner(product_id.clone()))
+            .ok_or(Error::ProductNotFound)?;
+        if current_owner != owner {
+            return Err(Error::Unauthorized);
+        }
+
+        env.storage()
+            .persistent()
+            .remove(&AuthDataKey::Authorized(product_id, actor));
+        Ok(())
+    }
+
+    /// Check whether an actor is authorized to add tracking events to a product.
+    /// Returns true if the actor is the owner or has been explicitly authorized.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `actor` - The address to check authorization for
+    ///
+    /// # Returns
+    /// * `Result<bool, Error>` - True if authorized, false otherwise
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn is_authorized(env: Env, product_id: String, actor: Address) -> Result<bool, Error> {
+        let owner: Address = env
+            .storage()
+            .persistent()
+            .get(&AuthDataKey::Owner(product_id.clone()))
+            .ok_or(Error::ProductNotFound)?;
+
+        if owner == actor {
+            return Ok(true);
+        }
+
+        Ok(env
+            .storage()
+            .persistent()
+            .get(&AuthDataKey::Authorized(product_id, actor))
+            .unwrap_or(false))
+    }
+}
+
+#[cfg(test)]
+mod test_authorization {
+    use super::*;
+    use soroban_sdk::{testutils::Address as _, Address, Env, String};
+
+    #[test]
+    fn test_init_product_owner_requires_trusted_initializer() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+        let trusted = Address::generate(&env);
+        let attacker = Address::generate(&env);
+        let owner = Address::generate(&env);
+        let product_id = String::from_str(&env, "PROD1");
+
+        auth_client.configure_initializer(&trusted);
+
+        let res = auth_client.try_init_product_owner(&attacker, &product_id, &owner);
+        assert_eq!(res, Err(Ok(Error::Unauthorized)));
+
+        auth_client.init_product_owner(&trusted, &product_id, &owner);
+        assert!(auth_client.is_authorized(&product_id, &owner));
+    }
+}
diff --git a/smart-contract/contracts/src/circuit_breaker.rs b/smart-contract/contracts/src/circuit_breaker.rs
new file mode 100644
index 00000000..30e16d49
--- /dev/null
+++ b/smart-contract/contracts/src/circuit_breaker.rs
@@ -0,0 +1,633 @@
+#![allow(deprecated)]
+#![allow(clippy::too_many_arguments)]
+
+/// Circuit Breaker — graduated emergency stop mechanism for ChainLogistics.
+///
+/// # Design
+///
+/// The circuit breaker is a **standalone Soroban contract** that other
+/// contracts query via cross-contract calls.  This keeps pause logic
+/// isolated and upgradeable independently of business logic.
+///
+/// ## Pause levels
+///
+/// | Level      | Blocked                                                  |
+/// |------------|----------------------------------------------------------|
+/// | Advisory   | Nothing — informational only                             |
+/// | Partial    | `add_tracking_event`, `register_product`                 |
+/// | Full       | All state-mutating operations                            |
+/// | Emergency  | All operations including reads (except status queries)   |
+///
+/// ## Multi-authority activation
+///
+/// A guardian can either:
+/// 1. **Instant pause** — immediately activates at `Emergency` level
+///    (single guardian sufficient for speed during active exploits).
+/// 2. **Proposal-based pause** — any guardian proposes; `required_approvals`
+///    guardians must vote before the pause is activated.  Used for
+///    lower-severity levels where deliberation is appropriate.
+///
+/// ## Time-limited pauses
+///
+/// Every pause carries an `expires_at` ledger timestamp.  When the
+/// current ledger time exceeds `expires_at` the pause is automatically
+/// considered lifted on the next `check_*` call.  Pass `0` for no expiry.
+///
+/// ## Events emitted
+///
+/// | Symbol                    | When                                      |
+/// |---------------------------|-------------------------------------------|
+/// | `cb_initialized`          | Contract initialised                      |
+/// | `cb_guardian_added`       | Guardian added                            |
+/// | `cb_guardian_removed`     | Guardian removed                          |
+/// | `cb_paused`               | Pause activated (instant or proposal)     |
+/// | `cb_lifted`               | Pause lifted                              |
+/// | `cb_expired`              | Pause auto-expired on check               |
+/// | `cb_proposal_created`     | Multi-auth proposal created               |
+/// | `cb_proposal_approved`    | Guardian approved a proposal              |
+/// | `cb_proposal_executed`    | Proposal threshold reached, pause applied |
+use soroban_sdk::{contract, contractimpl, Address, Env, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::types::{
+    CircuitBreakerState, DataKey, PauseApproval, PauseLevel, PauseReason, PauseRecord,
+};
+
+// ─── Constants ───────────────────────────────────────────────────────────────
+
+/// Maximum number of guardians.
+const MAX_GUARDIANS: u32 = 20;
+/// Maximum description length (bytes).
+const MAX_DESCRIPTION_LEN: u32 = 256;
+/// Maximum pause duration in seconds (30 days).
+const MAX_PAUSE_DURATION_SECS: u64 = 30 * 24 * 60 * 60;
+
+// ─── Storage helpers ─────────────────────────────────────────────────────────
+
+fn get_admin(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::Admin)
+}
+
+fn set_admin(env: &Env, admin: &Address) {
+    env.storage().persistent().set(&DataKey::Admin, admin);
+}
+
+fn has_admin(env: &Env) -> bool {
+    env.storage().persistent().has(&DataKey::Admin)
+}
+
+fn get_guardians(env: &Env) -> Vec<Address> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::CircuitBreakerGuardians)
+        .unwrap_or_else(|| Vec::new(env))
+}
+
+fn set_guardians(env: &Env, guardians: &Vec<Address>) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::CircuitBreakerGuardians, guardians);
+}
+
+fn get_state(env: &Env) -> CircuitBreakerState {
+    env.storage()
+        .persistent()
+        .get(&DataKey::CircuitBreakerState)
+        .unwrap_or(CircuitBreakerState {
+            is_paused: false,
+            level: PauseLevel::Advisory,
+            current_record_id: 0,
+            paused_at: 0,
+            expires_at: 0,
+        })
+}
+
+fn set_state(env: &Env, state: &CircuitBreakerState) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::CircuitBreakerState, state);
+}
+
+fn next_record_id(env: &Env) -> u64 {
+    let id: u64 = env
+        .storage()
+        .persistent()
+        .get(&DataKey::CircuitBreakerNextRecordId)
+        .unwrap_or(0)
+        + 1;
+    env.storage()
+        .persistent()
+        .set(&DataKey::CircuitBreakerNextRecordId, &id);
+    id
+}
+
+fn put_record(env: &Env, record: &PauseRecord) {
+    env.storage().persistent().set(
+        &DataKey::CircuitBreakerPauseRecord(record.record_id),
+        record,
+    );
+}
+
+fn get_record(env: &Env, record_id: u64) -> Option<PauseRecord> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::CircuitBreakerPauseRecord(record_id))
+}
+
+fn next_approval_id(env: &Env) -> u64 {
+    let id: u64 = env
+        .storage()
+        .persistent()
+        .get(&DataKey::CircuitBreakerNextApprovalId)
+        .unwrap_or(0)
+        + 1;
+    env.storage()
+        .persistent()
+        .set(&DataKey::CircuitBreakerNextApprovalId, &id);
+    id
+}
+
+fn put_approval(env: &Env, approval: &PauseApproval) {
+    env.storage().persistent().set(
+        &DataKey::CircuitBreakerPendingApproval(approval.approval_id),
+        approval,
+    );
+}
+
+fn get_approval(env: &Env, approval_id: u64) -> Option<PauseApproval> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::CircuitBreakerPendingApproval(approval_id))
+}
+
+// ─── Internal helpers ─────────────────────────────────────────────────────────
+
+fn require_admin(env: &Env, caller: &Address) -> Result<(), Error> {
+    let admin = get_admin(env).ok_or(Error::CircuitBreakerNotInitialized)?;
+    caller.require_auth();
+    if &admin != caller {
+        return Err(Error::Unauthorized);
+    }
+    Ok(())
+}
+
+fn require_guardian(env: &Env, caller: &Address) -> Result<(), Error> {
+    caller.require_auth();
+    let guardians = get_guardians(env);
+    if !guardians.contains(caller) {
+        return Err(Error::NotGuardian);
+    }
+    Ok(())
+}
+
+/// Returns `true` when the current ledger time has passed `expires_at`
+/// (and `expires_at != 0`).
+fn is_expired(env: &Env, expires_at: u64) -> bool {
+    expires_at != 0 && env.ledger().timestamp() >= expires_at
+}
+
+/// Validate description length.
+fn validate_description(description: &String) -> Result<(), Error> {
+    if description.len() > MAX_DESCRIPTION_LEN {
+        return Err(Error::PauseDescriptionTooLong);
+    }
+    Ok(())
+}
+
+/// Validate pause duration (0 = no expiry, otherwise must be ≤ MAX).
+fn validate_duration(duration_secs: u64) -> Result<(), Error> {
+    if duration_secs != 0 && duration_secs > MAX_PAUSE_DURATION_SECS {
+        return Err(Error::InvalidPauseDuration);
+    }
+    Ok(())
+}
+
+/// Core logic: write state + record and emit `cb_paused`.
+fn activate_pause(
+    env: &Env,
+    activated_by: Address,
+    level: PauseLevel,
+    reason: PauseReason,
+    description: String,
+    duration_secs: u64,
+) -> Result<u64, Error> {
+    let now = env.ledger().timestamp();
+    let expires_at = if duration_secs == 0 {
+        0
+    } else {
+        now + duration_secs
+    };
+
+    let record_id = next_record_id(env);
+    let record = PauseRecord {
+        record_id,
+        activated_by: activated_by.clone(),
+        level: level.clone(),
+        reason: reason.clone(),
+        description: description.clone(),
+        activated_at: now,
+        expires_at,
+        lifted_at: 0,
+        lifted_by: Vec::new(env),
+    };
+    put_record(env, &record);
+
+    let state = CircuitBreakerState {
+        is_paused: true,
+        level: level.clone(),
+        current_record_id: record_id,
+        paused_at: now,
+        expires_at,
+    };
+    set_state(env, &state);
+
+    env.events().publish(
+        (Symbol::new(env, "cb_paused"), record_id),
+        (activated_by, level, reason, description, expires_at),
+    );
+
+    Ok(record_id)
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+#[contract]
+pub struct CircuitBreakerContract;
+
+#[contractimpl]
+impl CircuitBreakerContract {
+    // ═══════════════════════════════════════════════════════════════════════
+    // INITIALISATION
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Initialise the circuit breaker.
+    ///
+    /// * `admin`    — address that can add/remove guardians and lift pauses.
+    /// * `guardians` — initial set of guardian addresses (may be empty).
+    ///
+    /// Can only be called once.
+    pub fn initialize(env: Env, admin: Address, guardians: Vec<Address>) -> Result<(), Error> {
+        if has_admin(&env) {
+            return Err(Error::CircuitBreakerAlreadyInitialized);
+        }
+        admin.require_auth();
+
+        if guardians.len() > MAX_GUARDIANS {
+            return Err(Error::TooManyGuardians);
+        }
+
+        // Deduplicate check
+        let mut seen = Vec::new(&env);
+        for g in guardians.iter() {
+            if seen.contains(&g) {
+                return Err(Error::DuplicateGuardian);
+            }
+            seen.push_back(g.clone());
+        }
+
+        set_admin(&env, &admin);
+        set_guardians(&env, &guardians);
+
+        // Initialise state to unpaused
+        set_state(
+            &env,
+            &CircuitBreakerState {
+                is_paused: false,
+                level: PauseLevel::Advisory,
+                current_record_id: 0,
+                paused_at: 0,
+                expires_at: 0,
+            },
+        );
+
+        env.events()
+            .publish((Symbol::new(&env, "cb_initialized"),), (admin, guardians));
+
+        Ok(())
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // GUARDIAN MANAGEMENT  (admin only)
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Add a new guardian.  Admin only.
+    pub fn add_guardian(env: Env, caller: Address, guardian: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let mut guardians = get_guardians(&env);
+        if guardians.contains(&guardian) {
+            return Err(Error::DuplicateGuardian);
+        }
+        if guardians.len() >= MAX_GUARDIANS {
+            return Err(Error::TooManyGuardians);
+        }
+        guardians.push_back(guardian.clone());
+        set_guardians(&env, &guardians);
+
+        env.events()
+            .publish((Symbol::new(&env, "cb_guardian_added"),), guardian);
+
+        Ok(())
+    }
+
+    /// Remove an existing guardian.  Admin only.
+    pub fn remove_guardian(env: Env, caller: Address, guardian: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let mut guardians = get_guardians(&env);
+        let mut idx: Option<u32> = None;
+        for i in 0..guardians.len() {
+            if guardians.get_unchecked(i) == guardian {
+                idx = Some(i);
+                break;
+            }
+        }
+        let i = idx.ok_or(Error::NotGuardian)?;
+        guardians.remove(i);
+        set_guardians(&env, &guardians);
+
+        env.events()
+            .publish((Symbol::new(&env, "cb_guardian_removed"),), guardian);
+
+        Ok(())
+    }
+
+    /// Return the current guardian list.
+    pub fn get_guardians(env: Env) -> Vec<Address> {
+        get_guardians(&env)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // INSTANT PAUSE  (single guardian — for active exploits)
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Immediately activate a pause.
+    ///
+    /// Any single guardian can call this.  Intended for active security
+    /// incidents where speed matters more than consensus.
+    ///
+    /// * `duration_secs` — seconds until auto-expiry; `0` = no expiry.
+    pub fn instant_pause(
+        env: Env,
+        caller: Address,
+        level: PauseLevel,
+        reason: PauseReason,
+        description: String,
+        duration_secs: u64,
+    ) -> Result<u64, Error> {
+        require_guardian(&env, &caller)?;
+        validate_description(&description)?;
+        validate_duration(duration_secs)?;
+
+        activate_pause(&env, caller, level, reason, description, duration_secs)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // MULTI-AUTHORITY PAUSE  (proposal → approvals → execute)
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Propose a pause that requires `required_approvals` guardian votes.
+    ///
+    /// The proposer's vote is counted automatically.
+    /// `approval_window_secs` is how long the proposal stays open (0 = no
+    /// expiry on the proposal itself).
+    pub fn propose_pause(
+        env: Env,
+        proposer: Address,
+        level: PauseLevel,
+        reason: PauseReason,
+        description: String,
+        pause_duration_secs: u64,
+        required_approvals: u32,
+        approval_window_secs: u64,
+    ) -> Result<u64, Error> {
+        require_guardian(&env, &proposer)?;
+        validate_description(&description)?;
+        validate_duration(pause_duration_secs)?;
+
+        let guardians = get_guardians(&env);
+        if required_approvals == 0 || required_approvals > guardians.len() {
+            return Err(Error::InvalidThreshold);
+        }
+
+        let now = env.ledger().timestamp();
+        let expires_at = if approval_window_secs == 0 {
+            0
+        } else {
+            now + approval_window_secs
+        };
+
+        let approval_id = next_approval_id(&env);
+        let mut approvals = Vec::new(&env);
+        approvals.push_back(proposer.clone());
+
+        let approval = PauseApproval {
+            approval_id,
+            proposed_level: level.clone(),
+            proposed_reason: reason.clone(),
+            description: description.clone(),
+            expires_at,
+            proposer: proposer.clone(),
+            approvals,
+            required_approvals,
+            executed: false,
+        };
+        put_approval(&env, &approval);
+
+        env.events().publish(
+            (Symbol::new(&env, "cb_proposal_created"), approval_id),
+            (proposer, level, reason, required_approvals),
+        );
+
+        Ok(approval_id)
+    }
+
+    /// Vote to approve a pending pause proposal.
+    pub fn approve_pause_proposal(
+        env: Env,
+        approver: Address,
+        approval_id: u64,
+    ) -> Result<(), Error> {
+        require_guardian(&env, &approver)?;
+
+        let mut approval = get_approval(&env, approval_id).ok_or(Error::ApprovalNotFound)?;
+
+        if approval.executed {
+            return Err(Error::ApprovalAlreadyExecuted);
+        }
+        if is_expired(&env, approval.expires_at) {
+            return Err(Error::ApprovalExpired);
+        }
+        if approval.approvals.contains(&approver) {
+            return Err(Error::ApprovalAlreadyVoted);
+        }
+
+        approval.approvals.push_back(approver.clone());
+        put_approval(&env, &approval);
+
+        env.events().publish(
+            (Symbol::new(&env, "cb_proposal_approved"), approval_id),
+            approver,
+        );
+
+        Ok(())
+    }
+
+    /// Execute a proposal once the approval threshold is reached.
+    ///
+    /// Any guardian can trigger execution once enough votes are in.
+    /// `pause_duration_secs` is the duration for the resulting pause.
+    pub fn execute_pause_proposal(
+        env: Env,
+        executor: Address,
+        approval_id: u64,
+        pause_duration_secs: u64,
+    ) -> Result<u64, Error> {
+        require_guardian(&env, &executor)?;
+        validate_duration(pause_duration_secs)?;
+
+        let mut approval = get_approval(&env, approval_id).ok_or(Error::ApprovalNotFound)?;
+
+        if approval.executed {
+            return Err(Error::ApprovalAlreadyExecuted);
+        }
+        if is_expired(&env, approval.expires_at) {
+            return Err(Error::ApprovalExpired);
+        }
+        if approval.approvals.len() < approval.required_approvals {
+            return Err(Error::ApprovalThresholdNotReached);
+        }
+
+        // Mark executed before side-effects (reentrancy guard)
+        approval.executed = true;
+        put_approval(&env, &approval);
+
+        let record_id = activate_pause(
+            &env,
+            executor.clone(),
+            approval.proposed_level.clone(),
+            approval.proposed_reason.clone(),
+            approval.description.clone(),
+            pause_duration_secs,
+        )?;
+
+        env.events().publish(
+            (Symbol::new(&env, "cb_proposal_executed"), approval_id),
+            (executor, record_id),
+        );
+
+        Ok(record_id)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // LIFT PAUSE  (admin or multi-guardian)
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Lift the active pause.  Admin only.
+    ///
+    /// Returns the record ID of the pause that was lifted.
+    pub fn lift_pause(env: Env, caller: Address) -> Result<u64, Error> {
+        require_admin(&env, &caller)?;
+
+        let mut state = get_state(&env);
+        if !state.is_paused {
+            return Err(Error::ContractNotPaused);
+        }
+
+        let record_id = state.current_record_id;
+
+        // Update the pause record with lift info
+        if let Some(mut record) = get_record(&env, record_id) {
+            record.lifted_at = env.ledger().timestamp();
+            record.lifted_by.push_back(caller.clone());
+            put_record(&env, &record);
+        }
+
+        state.is_paused = false;
+        state.level = PauseLevel::Advisory;
+        state.expires_at = 0;
+        set_state(&env, &state);
+
+        env.events()
+            .publish((Symbol::new(&env, "cb_lifted"), record_id), caller);
+
+        Ok(record_id)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // STATUS QUERIES  (always available — never blocked)
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Returns the live circuit breaker state.
+    ///
+    /// If the pause has expired this call auto-expires it and returns the
+    /// updated (unpaused) state.
+    pub fn get_state(env: Env) -> CircuitBreakerState {
+        let mut state = get_state(&env);
+        if state.is_paused && is_expired(&env, state.expires_at) {
+            // Auto-expire
+            if let Some(mut record) = get_record(&env, state.current_record_id) {
+                record.lifted_at = env.ledger().timestamp();
+                put_record(&env, &record);
+            }
+            env.events().publish(
+                (Symbol::new(&env, "cb_expired"), state.current_record_id),
+                env.ledger().timestamp(),
+            );
+            state.is_paused = false;
+            state.level = PauseLevel::Advisory;
+            state.expires_at = 0;
+            set_state(&env, &state);
+        }
+        state
+    }
+
+    /// Returns `true` when the contract is paused at any level above Advisory.
+    pub fn is_paused(env: Env) -> bool {
+        let state = CircuitBreakerContract::get_state(env);
+        state.is_paused
+    }
+
+    /// Returns `true` when write operations should be blocked
+    /// (Partial, Full, or Emergency pause).
+    pub fn check_writes_allowed(env: Env) -> bool {
+        let state = CircuitBreakerContract::get_state(env);
+        if !state.is_paused {
+            return true;
+        }
+        matches!(state.level, PauseLevel::Advisory)
+    }
+
+    /// Returns `true` when all mutations are blocked (Full or Emergency).
+    pub fn check_mutations_allowed(env: Env) -> bool {
+        let state = CircuitBreakerContract::get_state(env);
+        if !state.is_paused {
+            return true;
+        }
+        matches!(state.level, PauseLevel::Advisory | PauseLevel::Partial)
+    }
+
+    /// Returns `true` when reads are allowed (everything except Emergency).
+    pub fn check_reads_allowed(env: Env) -> bool {
+        let state = CircuitBreakerContract::get_state(env);
+        if !state.is_paused {
+            return true;
+        }
+        !matches!(state.level, PauseLevel::Emergency)
+    }
+
+    /// Retrieve a historical pause record by ID.
+    pub fn get_pause_record(env: Env, record_id: u64) -> Result<PauseRecord, Error> {
+        get_record(&env, record_id).ok_or(Error::PauseRecordNotFound)
+    }
+
+    /// Retrieve a pending approval proposal by ID.
+    pub fn get_pause_approval(env: Env, approval_id: u64) -> Result<PauseApproval, Error> {
+        get_approval(&env, approval_id).ok_or(Error::ApprovalNotFound)
+    }
+
+    /// Return the admin address.
+    pub fn get_admin(env: Env) -> Result<Address, Error> {
+        get_admin(&env).ok_or(Error::CircuitBreakerNotInitialized)
+    }
+}
diff --git a/smart-contract/contracts/src/contract.rs b/smart-contract/contracts/src/contract.rs
new file mode 100644
index 00000000..03b6d89d
--- /dev/null
+++ b/smart-contract/contracts/src/contract.rs
@@ -0,0 +1,697 @@
+use soroban_sdk::{contract, contractimpl, Address, BytesN, Env, Map, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::events::TrackingEventPublished;
+use crate::types::{Product, TrackingEvent, TrackingEventFilter, TrackingEventPage};
+use crate::validation_contract::ValidationContract;
+use crate::{storage, AuthorizationContractClient};
+
+// ─── Internal helpers ────────────────────────────────────────────────────────
+
+/// Ensures the contract is not paused.
+/// Returns ContractPaused error if the contract is currently paused.
+fn require_not_paused(env: &Env) -> Result<(), Error> {
+    if storage::is_paused(env) {
+        return Err(Error::ContractPaused);
+    }
+    Ok(())
+}
+
+/// Ensures the caller is the admin or the configured multi-sig contract.
+/// Returns NotInitialized if admin is not set.
+/// Returns Unauthorized if caller is not admin or multi-sig contract.
+fn require_admin(env: &Env, caller: &Address) -> Result<(), Error> {
+    let admin = storage::get_admin(env).ok_or(Error::NotInitialized)?;
+    if &admin == caller {
+        caller.require_auth();
+        return Ok(());
+    }
+
+    if let Some(multisig) = storage::get_multisig_contract(env) {
+        if &multisig == caller {
+            if env.current_contract_address() != multisig {
+                caller.require_auth();
+            }
+            return Ok(());
+        }
+    }
+
+    if let Some(timelock) = storage::get_timelock_contract(env) {
+        if &timelock == caller {
+            if env.current_contract_address() != timelock {
+                caller.require_auth();
+            }
+            return Ok(());
+        }
+    }
+
+    Err(Error::Unauthorized)
+}
+
+/// Reads a product from storage.
+/// Returns ProductNotFound if the product does not exist.
+fn read_product(env: &Env, product_id: &String) -> Result<Product, Error> {
+    storage::get_product(env, product_id).ok_or(Error::ProductNotFound)
+}
+
+/// Writes a product to storage.
+#[allow(dead_code)]
+fn write_product(env: &Env, product: &Product) {
+    storage::put_product(env, product);
+}
+
+fn calc_has_more(offset: u64, current_len: u64, total_count: u64) -> Result<bool, Error> {
+    let consumed = offset
+        .checked_add(current_len)
+        .ok_or(Error::ArithmeticOverflow)?;
+    Ok(consumed < total_count)
+}
+
+/// Ensures the caller is the product owner.
+/// Returns Unauthorized if caller is not the owner.
+#[allow(dead_code)]
+fn require_owner(product: &Product, caller: &Address) -> Result<(), Error> {
+    caller.require_auth();
+    if &product.owner != caller {
+        return Err(Error::Unauthorized);
+    }
+    Ok(())
+}
+
+/// Ensures the caller is authorized to add events to the product.
+/// Checks that the product is active and the caller is authorized.
+/// Returns ProductDeactivated if product is not active.
+/// Returns NotInitialized if auth contract is not configured.
+/// Returns Unauthorized if caller is not authorized.
+fn require_can_add_event(
+    env: &Env,
+    product_id: &String,
+    product: &Product,
+    caller: &Address,
+) -> Result<(), Error> {
+    caller.require_auth();
+
+    if !product.active {
+        return Err(Error::ProductDeactivated);
+    }
+
+    let auth_contract = storage::get_auth_contract(env).ok_or(Error::NotInitialized)?;
+    let auth_client = AuthorizationContractClient::new(env, &auth_contract);
+
+    // Delegate check to AuthorizationContract
+    if !auth_client.is_authorized(product_id, caller) {
+        return Err(Error::Unauthorized);
+    }
+
+    Ok(())
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+/// The main ChainLogistics contract.
+/// This contract handles product tracking, event management, and administrative functions.
+#[contract]
+pub struct ChainLogisticsContract;
+
+#[contractimpl]
+impl ChainLogisticsContract {
+    const MAX_EVENT_ID_PAGE_LIMIT: u32 = 100;
+
+    /// Initialize the contract with an admin address and authorization contract.
+    ///
+    /// # Arguments
+    /// * `admin` - The admin address who will have control over the contract
+    /// * `auth_contract` - The address of the authorization contract
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if already initialized
+    ///
+    /// # Errors
+    /// * `AlreadyInitialized` - If the contract has already been initialized
+    pub fn init(env: Env, admin: Address, auth_contract: Address) -> Result<(), Error> {
+        if storage::has_admin(&env) {
+            return Err(Error::AlreadyInitialized);
+        }
+        admin.require_auth();
+        ValidationContract::validate_contract_address(&env, &auth_contract)?;
+        storage::set_admin(&env, &admin);
+        storage::set_paused(&env, false);
+        storage::set_auth_contract(&env, &auth_contract);
+        Ok(())
+    }
+
+    /// Check if the contract is currently paused.
+    ///
+    /// # Returns
+    /// * `bool` - True if paused, false otherwise
+    pub fn is_paused(env: Env) -> bool {
+        storage::is_paused(&env)
+    }
+
+    /// Pause the contract, preventing most operations.
+    /// Only the admin can call this function.
+    ///
+    /// # Arguments
+    /// * `caller` - The address calling the function (must be admin)
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if already paused or not authorized
+    ///
+    /// # Errors
+    /// * `Unauthorized` - If caller is not the admin
+    /// * `ContractPaused` - If the contract is already paused
+    pub fn pause(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        if storage::is_paused(&env) {
+            return Err(Error::ContractPaused);
+        }
+        storage::set_paused(&env, true);
+        Ok(())
+    }
+
+    /// Unpause the contract, resuming normal operations.
+    /// Only the admin can call this function.
+    ///
+    /// # Arguments
+    /// * `caller` - The address calling the function (must be admin)
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not paused or not authorized
+    ///
+    /// # Errors
+    /// * `Unauthorized` - If caller is not the admin
+    /// * `ContractNotPaused` - If the contract is not paused
+    pub fn unpause(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        if !storage::is_paused(&env) {
+            return Err(Error::ContractNotPaused);
+        }
+        storage::set_paused(&env, false);
+        Ok(())
+    }
+
+    /// Transfer admin rights to a new address.
+    /// Both the current admin and new admin must authenticate.
+    ///
+    /// # Arguments
+    /// * `current_admin` - The current admin address
+    /// * `new_admin` - The new admin address to transfer to
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not authorized
+    ///
+    /// # Errors
+    /// * `Unauthorized` - If current_admin is not the actual admin
+    pub fn transfer_admin(
+        env: Env,
+        current_admin: Address,
+        new_admin: Address,
+    ) -> Result<(), Error> {
+        require_admin(&env, &current_admin)?;
+        ValidationContract::validate_distinct_addresses(&current_admin, &new_admin)?;
+        new_admin.require_auth();
+        storage::set_admin(&env, &new_admin);
+        Ok(())
+    }
+
+    /// Set the multi-signature contract address.
+    /// Only the admin can call this function.
+    ///
+    /// # Arguments
+    /// * `caller` - The address calling the function (must be admin)
+    /// * `multisig_contract` - The address of the multi-signature contract
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if not authorized
+    ///
+    /// # Errors
+    /// * `Unauthorized` - If caller is not the admin
+    pub fn set_multisig_contract(
+        env: Env,
+        caller: Address,
+        multisig_contract: Address,
+    ) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        ValidationContract::validate_contract_address(&env, &multisig_contract)?;
+        storage::set_multisig_contract(&env, &multisig_contract);
+        Ok(())
+    }
+
+    pub fn set_timelock_contract(
+        env: Env,
+        caller: Address,
+        timelock_contract: Address,
+    ) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        ValidationContract::validate_contract_address(&env, &timelock_contract)?;
+        storage::set_timelock_contract(&env, &timelock_contract);
+        Ok(())
+    }
+
+    // Note: register_product, deactivate_product, reactivate_product,
+    // get_product, and get_stats have been extracted to ProductRegistryContract
+    // in product_registry.rs
+
+    // Note: transfer_product is now in ProductTransferContract
+    // get_product_event_ids, get_event_count are now in ProductQueryContract
+
+    // This function has 8 parameters which exceeds clippy's default limit of 7.
+    // However, this is a public contract entrypoint and changing the signature would be
+    // a breaking change for any existing clients. The parameters represent distinct
+    // pieces of tracking information that are all required for a single atomic operation.
+    #[allow(clippy::too_many_arguments)]
+    pub fn add_tracking_event(
+        env: Env,
+        actor: Address,
+        product_id: String,
+        event_type: Symbol,
+        location: String,
+        data_hash: BytesN<32>,
+        note: String,
+        metadata: Map<Symbol, String>,
+    ) -> Result<u64, Error> {
+        require_not_paused(&env)?;
+        ValidationContract::non_empty(&product_id)?;
+        ValidationContract::max_len(&product_id, ValidationContract::MAX_PRODUCT_ID_LEN)?;
+        ValidationContract::validate_event_type(&env, &event_type)?;
+        let product = read_product(&env, &product_id)?;
+        require_can_add_event(&env, &product_id, &product, &actor)?;
+
+        ValidationContract::validate_event_location(&location)?;
+        ValidationContract::validate_event_note(&note)?;
+        ValidationContract::validate_metadata(&metadata)?;
+
+        let event_id = storage::next_event_id(&env)?;
+        let event = TrackingEvent {
+            event_id,
+            product_id: product_id.clone(),
+            actor,
+            timestamp: env.ledger().timestamp(),
+            event_type: event_type.clone(),
+            location,
+            data_hash,
+            note,
+            metadata,
+        };
+
+        storage::put_event(&env, &event);
+
+        let mut ids = storage::get_product_event_ids(&env, &product_id);
+        ids.push_back(event_id);
+        storage::put_product_event_ids(&env, &product_id, &ids);
+
+        storage::index_event_by_type(&env, &product_id, &event_type, event_id)?;
+
+        TrackingEventPublished {
+            product_id: product_id.clone(),
+            event_id,
+            event: event.clone(),
+        }
+        .publish(&env);
+
+        Ok(event_id)
+    }
+
+    /// Get a tracking event by its ID.
+    ///
+    /// # Arguments
+    /// * `event_id` - The ID of the event to retrieve
+    ///
+    /// # Returns
+    /// * `Result<TrackingEvent, Error>` - The tracking event
+    ///
+    /// # Errors
+    /// * `EventNotFound` - If the event does not exist
+    pub fn get_event(env: Env, event_id: u64) -> Result<TrackingEvent, Error> {
+        storage::get_event(&env, event_id).ok_or(Error::EventNotFound)
+    }
+
+    /// Get paginated tracking events for a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `offset` - The offset to start from (for pagination)
+    /// * `limit` - The maximum number of events to return
+    ///
+    /// # Returns
+    /// * `Result<TrackingEventPage, Error>` - A page of tracking events with pagination metadata
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_product_events(
+        env: Env,
+        product_id: String,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        let _ = read_product(&env, &product_id)?;
+        ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)?;
+
+        let all_ids = storage::get_product_event_ids(&env, &product_id);
+        let total_count = all_ids.len() as u64;
+
+        let event_ids = storage::get_product_event_ids_paginated(&env, &product_id, offset, limit);
+
+        let mut events = Vec::new(&env);
+        for i in 0..event_ids.len() {
+            let eid = event_ids.get_unchecked(i);
+            if let Some(event) = storage::get_event(&env, eid) {
+                events.push_back(event);
+            }
+        }
+
+        let has_more = calc_has_more(offset, event_ids.len() as u64, total_count)?;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get tracking events for a product filtered by event type.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `event_type` - The type of events to filter by
+    /// * `offset` - The offset to start from (for pagination)
+    /// * `limit` - The maximum number of events to return
+    ///
+    /// # Returns
+    /// * `Result<TrackingEventPage, Error>` - A page of tracking events with pagination metadata
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_events_by_type(
+        env: Env,
+        product_id: String,
+        event_type: Symbol,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        let _ = read_product(&env, &product_id)?;
+        ValidationContract::validate_event_type(&env, &event_type)?;
+        ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)?;
+
+        let total_count = storage::get_event_count_by_type(&env, &product_id, &event_type);
+        let event_ids =
+            storage::get_event_ids_by_type(&env, &product_id, &event_type, offset, limit);
+
+        let mut events = Vec::new(&env);
+        for i in 0..event_ids.len() {
+            let eid = event_ids.get_unchecked(i);
+            if let Some(event) = storage::get_event(&env, eid) {
+                events.push_back(event);
+            }
+        }
+
+        let has_more = calc_has_more(offset, event_ids.len() as u64, total_count)?;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get tracking events for a product filtered by time range.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `start_time` - The start timestamp (inclusive)
+    /// * `end_time` - The end timestamp (inclusive)
+    /// * `offset` - The offset to start from (for pagination)
+    /// * `limit` - The maximum number of events to return
+    ///
+    /// # Returns
+    /// * `Result<TrackingEventPage, Error>` - A page of tracking events with pagination metadata
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_events_by_time_range(
+        env: Env,
+        product_id: String,
+        start_time: u64,
+        end_time: u64,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        let _ = read_product(&env, &product_id)?;
+        ValidationContract::validate_time_range(&env, start_time, end_time)?;
+        ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)?;
+
+        let all_ids = storage::get_product_event_ids(&env, &product_id);
+        let mut matching_ids = Vec::new(&env);
+
+        for i in 0..all_ids.len() {
+            let eid = all_ids.get_unchecked(i);
+            if let Some(event) = storage::get_event(&env, eid) {
+                if event.timestamp >= start_time && event.timestamp <= end_time {
+                    matching_ids.push_back(eid);
+                }
+            }
+        }
+
+        let total_count = matching_ids.len() as u64;
+
+        let mut events = Vec::new(&env);
+        let start = offset as u32;
+        let end_u64 = offset.checked_add(limit).ok_or(Error::ArithmeticOverflow)?;
+        let capped_end = end_u64.min(u32::MAX as u64) as u32;
+        let end = capped_end.min(matching_ids.len());
+
+        for i in start..end {
+            let eid = matching_ids.get_unchecked(i);
+            if let Some(event) = storage::get_event(&env, eid) {
+                events.push_back(event);
+            }
+        }
+
+        let has_more = calc_has_more(offset, events.len() as u64, total_count)?;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get tracking events for a product with advanced filtering.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `filter` - The filter criteria (event type, time range, location)
+    /// * `offset` - The offset to start from (for pagination)
+    /// * `limit` - The maximum number of events to return
+    ///
+    /// # Returns
+    /// * `Result<TrackingEventPage, Error>` - A page of tracking events with pagination metadata
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_filtered_events(
+        env: Env,
+        product_id: String,
+        filter: TrackingEventFilter,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        let _ = read_product(&env, &product_id)?;
+        ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)?;
+        if filter.start_time > 0 || filter.end_time < u64::MAX {
+            ValidationContract::validate_time_range(&env, filter.start_time, filter.end_time)?;
+        }
+
+        let all_ids = storage::get_product_event_ids(&env, &product_id);
+        let mut matching_ids = Vec::new(&env);
+
+        let empty_sym = Symbol::new(&env, "");
+        let empty_loc = String::from_str(&env, "");
+
+        for i in 0..all_ids.len() {
+            let eid = all_ids.get_unchecked(i);
+            if let Some(event) = storage::get_event(&env, eid) {
+                let mut matches = true;
+
+                if filter.event_type != empty_sym && event.event_type != filter.event_type {
+                    matches = false;
+                }
+                if filter.start_time > 0 && event.timestamp < filter.start_time {
+                    matches = false;
+                }
+                if filter.end_time < u64::MAX && event.timestamp > filter.end_time {
+                    matches = false;
+                }
+                if filter.location != empty_loc && event.location != filter.location {
+                    matches = false;
+                }
+
+                if matches {
+                    matching_ids.push_back(eid);
+                }
+            }
+        }
+
+        let total_count = matching_ids.len() as u64;
+
+        let mut events = Vec::new(&env);
+        let start = offset as u32;
+        let end_u64 = offset.checked_add(limit).ok_or(Error::ArithmeticOverflow)?;
+        let capped_end = end_u64.min(u32::MAX as u64) as u32;
+        let end = capped_end.min(matching_ids.len());
+
+        for i in start..end {
+            let eid = matching_ids.get_unchecked(i);
+            if let Some(event) = storage::get_event(&env, eid) {
+                events.push_back(event);
+            }
+        }
+
+        let has_more = calc_has_more(offset, events.len() as u64, total_count)?;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get all event IDs for a product.
+    ///
+    /// # Arguments
+    /// * `id` - The ID of the product
+    ///
+    /// # Returns
+    /// * `Result<Vec<u64>, Error>` - A vector of event IDs
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_product_event_ids(env: Env, id: String) -> Result<Vec<u64>, Error> {
+        let _ = read_product(&env, &id)?;
+        Ok(storage::get_product_event_ids(&env, &id))
+    }
+
+    /// Get paginated event IDs for a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `offset` - The offset to start from (for pagination)
+    /// * `limit` - The maximum number of event IDs to return (max 100)
+    ///
+    /// # Returns
+    /// * `Result<Vec<u64>, Error>` - A vector of event IDs
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_product_event_ids_paginated(
+        env: Env,
+        product_id: String,
+        offset: u32,
+        limit: u32,
+    ) -> Result<Vec<u64>, Error> {
+        let _ = read_product(&env, &product_id)?;
+        if limit == 0 {
+            return Ok(Vec::new(&env));
+        }
+
+        let bounded_limit = limit.min(Self::MAX_EVENT_ID_PAGE_LIMIT);
+        Ok(storage::get_product_event_ids_paginated(
+            &env,
+            &product_id,
+            offset as u64,
+            bounded_limit as u64,
+        ))
+    }
+
+    /// Get the total number of events for a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    ///
+    /// # Returns
+    /// * `Result<u32, Error>` - The number of events
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_product_event_count(env: Env, product_id: String) -> Result<u32, Error> {
+        let _ = read_product(&env, &product_id)?;
+        Ok(storage::get_product_event_ids(&env, &product_id).len())
+    }
+
+    /// Get the total number of events for a product (as u64).
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    ///
+    /// # Returns
+    /// * `Result<u64, Error>` - The number of events
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_event_count(env: Env, product_id: String) -> Result<u64, Error> {
+        let _ = read_product(&env, &product_id)?;
+        let ids = storage::get_product_event_ids(&env, &product_id);
+        Ok(ids.len() as u64)
+    }
+
+    /// Get the number of events for a product filtered by type.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `event_type` - The type of events to count
+    ///
+    /// # Returns
+    /// * `Result<u64, Error>` - The number of events of the specified type
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_event_count_by_type(
+        env: Env,
+        product_id: String,
+        event_type: Symbol,
+    ) -> Result<u64, Error> {
+        let _ = read_product(&env, &product_id)?;
+        Ok(storage::get_event_count_by_type(
+            &env,
+            &product_id,
+            &event_type,
+        ))
+    }
+
+    /// Helper function to simulate multi-sig contract invoking pause.
+    /// Used for testing purposes only.
+    ///
+    /// # Arguments
+    /// * `caller` - The address calling the function
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if pause fails
+    pub fn __simulate_multisig_pause(env: Env, caller: Address) -> Result<(), Error> {
+        Self::pause(env, caller)
+    }
+}
+
+#[cfg(test)]
+mod contract_tests {
+    use super::*;
+    use soroban_sdk::testutils::Address as _;
+    use soroban_sdk::{Address, Env};
+
+    #[test]
+    fn test_multisig_invoker_can_pause() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let admin = Address::generate(&env);
+
+        // Register the contract as the multisig address for this test
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+        env.as_contract(&contract_id.clone(), || {
+            storage::set_admin(&env, &admin);
+            // Set multisig contract to the contract itself and use contract_id as caller
+            storage::set_multisig_contract(&env, &contract_id);
+            assert!(!storage::is_paused(&env));
+            ChainLogisticsContract::__simulate_multisig_pause(env.clone(), contract_id).unwrap();
+            assert!(storage::is_paused(&env));
+        });
+    }
+}
diff --git a/smart-contract/contracts/src/error.rs b/smart-contract/contracts/src/error.rs
new file mode 100644
index 00000000..ef6e808c
--- /dev/null
+++ b/smart-contract/contracts/src/error.rs
@@ -0,0 +1,113 @@
+use soroban_sdk::contracterror;
+
+#[contracterror]
+#[derive(Copy, Clone, Debug, Eq, PartialEq, PartialOrd, Ord)]
+#[repr(u32)]
+pub enum Error {
+    // --- Core (1-10) ---
+    ProductAlreadyExists = 1,
+    ProductNotFound = 2,
+    Unauthorized = 3,
+    InvalidInput = 4,
+    EventNotFound = 5,
+    NotInitialized = 6,
+    AlreadyInitialized = 7,
+    ContractPaused = 8,
+    ContractNotPaused = 9,
+
+    // --- Validation (10-30) ---
+    InvalidProductId = 10,
+    InvalidProductName = 11,
+    InvalidOrigin = 12,
+    InvalidCategory = 13,
+    ProductIdTooLong = 14,
+    ProductNameTooLong = 15,
+    OriginTooLong = 16,
+    CategoryTooLong = 17,
+    DescriptionTooLong = 18,
+    TooManyTags = 19,
+    TagTooLong = 20,
+    TooManyCertifications = 21,
+    TooManyMediaHashes = 22,
+    TooManyCustomFields = 23,
+    CustomFieldValueTooLong = 24,
+
+    // --- Batch (30-40) ---
+    EmptyBatch = 30,
+    BatchTooLarge = 31,
+    DuplicateProductIdInBatch = 32,
+
+    // --- Lifecycle (40-50) ---
+    ProductDeactivated = 40,
+    DeactivationReasonRequired = 41,
+    ProductAlreadyActive = 42,
+
+    // --- Upgrade (50-60) ---
+    InvalidUpgrade = 50,
+    UpgradeInProgress = 51,
+    NoUpgradeInProgress = 52,
+    EmergencyPaused = 53,
+    NotEmergencyPaused = 54,
+
+    // --- Multi-Signature (60-70) ---
+    MultiSigNotConfigured = 60,
+    NotSigner = 61,
+    ProposalNotFound = 62,
+    AlreadyApproved = 63,
+    ProposalAlreadyExecuted = 64,
+    ThresholdNotReached = 65,
+    InvalidThreshold = 66,
+    TooManySigners = 67,
+    DuplicateSigner = 68,
+    ProposalRejected = 69,
+    TimeLockNotExpired = 70,
+    AlreadyRejected = 71,
+    ProposalExpired = 72,
+
+    // --- Oracle Security (73-80) ---
+    OracleFeedNotConfigured = 73,
+    OracleSourceNotFound = 74,
+    OracleReportStale = 75,
+    OracleValueOutOfRange = 76,
+    OracleConsensusBroken = 77,
+    OracleFallbackUnavailable = 78,
+    DuplicateOracleSource = 79,
+    OracleInvalidStake = 80,
+
+    // --- Timelock (81-90) ---
+    TimelockNotReady = 81,
+    TimelockExpired = 82,
+    TimelockDelayTooShort = 83,
+    TimelockDelayTooLong = 84,
+    TimelockCancelled = 85,
+
+    // --- Circuit Breaker (110-125) ---
+    CircuitBreakerNotInitialized = 110,
+    CircuitBreakerAlreadyInitialized = 111,
+    NotGuardian = 112,
+    TooManyGuardians = 113,
+    DuplicateGuardian = 114,
+    PauseRecordNotFound = 115,
+    ApprovalNotFound = 116,
+    ApprovalAlreadyExecuted = 117,
+    ApprovalAlreadyVoted = 118,
+    ApprovalExpired = 119,
+    ApprovalThresholdNotReached = 120,
+    PauseExpired = 121,
+    InvalidPauseDuration = 122,
+    PauseDescriptionTooLong = 123,
+
+    // --- Security / Arithmetic (91-110) ---
+    InvalidAddress = 91,
+    InvalidTimestamp = 92,
+    ArithmeticOverflow = 93,
+    ReentrancyDetected = 94,
+
+    // --- Quality Control (100-110) ---
+    InvalidLimit = 100,
+    QualityControlNotEnabled = 101,
+    SensorNotAuthorized = 102,
+    CertificationNotFound = 103,
+    InvalidCertification = 104,
+    ReadingNotFound = 105,
+}
diff --git a/smart-contract/contracts/src/event_query.rs b/smart-contract/contracts/src/event_query.rs
new file mode 100644
index 00000000..46792c06
--- /dev/null
+++ b/smart-contract/contracts/src/event_query.rs
@@ -0,0 +1,851 @@
+use soroban_sdk::{contract, contractimpl, contracttype, Address, Env, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::types::TrackingEventFilter;
+use crate::types::TrackingEventPage;
+use crate::validation_contract::ValidationContract;
+use crate::{ProductRegistryContractClient, TrackingContractClient};
+
+#[contracttype]
+#[derive(Clone)]
+enum QueryDataKey {
+    RegistryContract,
+    TrackingContract,
+}
+
+fn get_registry_contract(env: &Env) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&QueryDataKey::RegistryContract)
+}
+
+fn set_registry_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&QueryDataKey::RegistryContract, address);
+}
+
+fn get_tracking_contract(env: &Env) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&QueryDataKey::TrackingContract)
+}
+
+fn set_tracking_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&QueryDataKey::TrackingContract, address);
+}
+
+fn ensure_product_exists(env: &Env, product_id: &String) -> Result<(), Error> {
+    ValidationContract::non_empty(product_id)?;
+    ValidationContract::max_len(product_id, ValidationContract::MAX_PRODUCT_ID_LEN)?;
+    let registry = get_registry_contract(env).ok_or(Error::NotInitialized)?;
+    let registry_client = ProductRegistryContractClient::new(env, &registry);
+
+    match registry_client.try_get_product(product_id) {
+        Ok(Ok(_)) => Ok(()),
+        _ => Err(Error::ProductNotFound),
+    }
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+#[contract]
+pub struct EventQueryContract;
+
+#[contractimpl]
+impl EventQueryContract {
+    /// Initialize the EventQueryContract with the registry + tracking contract addresses.
+    pub fn init(
+        env: Env,
+        registry_contract: Address,
+        tracking_contract: Address,
+    ) -> Result<(), Error> {
+        if get_registry_contract(&env).is_some() || get_tracking_contract(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+        ValidationContract::validate_contract_address(&env, &registry_contract)?;
+        ValidationContract::validate_contract_address(&env, &tracking_contract)?;
+        set_registry_contract(&env, &registry_contract);
+        set_tracking_contract(&env, &tracking_contract);
+        Ok(())
+    }
+
+    /// Get paginated events for a product.
+    /// Returns events with pagination info (total_count, has_more).
+    pub fn query_get_product_events(
+        env: Env,
+        product_id: String,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        if ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)
+            .is_err()
+        {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count: 0,
+                has_more: false,
+            });
+        }
+
+        ensure_product_exists(&env, &product_id)?;
+
+        let tracking = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_client = TrackingContractClient::new(&env, &tracking);
+
+        let all_ids = tracking_client.tracking_get_product_event_ids(&product_id);
+        let total_count = all_ids.len() as u64;
+
+        if offset >= total_count {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count,
+                has_more: false,
+            });
+        }
+
+        let start = offset as u32;
+        let end = ((offset + limit) as u32).min(all_ids.len());
+
+        // Fetch actual events
+        let mut events = Vec::new(&env);
+        for i in start..end {
+            if let Some(eid) = all_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    events.push_back(event);
+                }
+            }
+        }
+
+        let has_more = offset
+            .checked_add(events.len() as u64)
+            .ok_or(Error::ArithmeticOverflow)?
+            < total_count;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get events filtered by type with pagination.
+    pub fn query_get_events_by_type(
+        env: Env,
+        product_id: String,
+        event_type: Symbol,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        if ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)
+            .is_err()
+        {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count: 0,
+                has_more: false,
+            });
+        }
+
+        ensure_product_exists(&env, &product_id)?;
+
+        let tracking = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_client = TrackingContractClient::new(&env, &tracking);
+
+        let all_ids = tracking_client.tracking_get_product_event_ids(&product_id);
+        let mut matching_ids: Vec<u64> = Vec::new(&env);
+
+        for i in 0..all_ids.len() {
+            if let Some(eid) = all_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    if event.event_type == event_type {
+                        matching_ids.push_back(eid);
+                    }
+                }
+            }
+        }
+
+        let total_count = matching_ids.len() as u64;
+
+        if offset >= total_count {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count,
+                has_more: false,
+            });
+        }
+
+        let start = offset as u32;
+        let end_u64 = offset.checked_add(limit).ok_or(Error::ArithmeticOverflow)?;
+        let end = (end_u64.min(u32::MAX as u64) as u32).min(matching_ids.len());
+
+        let mut events = Vec::new(&env);
+        for i in start..end {
+            if let Some(eid) = matching_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    events.push_back(event);
+                }
+            }
+        }
+
+        let has_more = offset
+            .checked_add(events.len() as u64)
+            .ok_or(Error::ArithmeticOverflow)?
+            < total_count;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get events within a time range with pagination.
+    pub fn query_get_events_by_time_range(
+        env: Env,
+        product_id: String,
+        start_time: u64,
+        end_time: u64,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        if ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)
+            .is_err()
+        {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count: 0,
+                has_more: false,
+            });
+        }
+        ValidationContract::validate_time_range(&env, start_time, end_time)?;
+
+        ensure_product_exists(&env, &product_id)?;
+
+        let tracking = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_client = TrackingContractClient::new(&env, &tracking);
+
+        let all_ids = tracking_client.tracking_get_product_event_ids(&product_id);
+        let mut matching_ids: Vec<u64> = Vec::new(&env);
+
+        for i in 0..all_ids.len() {
+            if let Some(eid) = all_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    if event.timestamp >= start_time && event.timestamp <= end_time {
+                        matching_ids.push_back(eid);
+                    }
+                }
+            }
+        }
+
+        let total_count = matching_ids.len() as u64;
+
+        if offset >= total_count {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count,
+                has_more: false,
+            });
+        }
+
+        let start = offset as u32;
+        let end = ((offset + limit) as u32).min(matching_ids.len());
+
+        let mut events = Vec::new(&env);
+        for i in start..end {
+            if let Some(eid) = matching_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    events.push_back(event);
+                }
+            }
+        }
+
+        let has_more = offset
+            .checked_add(events.len() as u64)
+            .ok_or(Error::ArithmeticOverflow)?
+            < total_count;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get events with composite filtering (type, time range, location).
+    /// All filter criteria are optional - use empty values to skip a filter.
+    pub fn query_get_filtered_events(
+        env: Env,
+        product_id: String,
+        filter: TrackingEventFilter,
+        offset: u64,
+        limit: u64,
+    ) -> Result<TrackingEventPage, Error> {
+        if ValidationContract::validate_pagination_limit(limit, ValidationContract::MAX_PAGE_LIMIT)
+            .is_err()
+        {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count: 0,
+                has_more: false,
+            });
+        }
+        if filter.start_time > 0 || filter.end_time < u64::MAX {
+            ValidationContract::validate_time_range(&env, filter.start_time, filter.end_time)?;
+        }
+
+        ensure_product_exists(&env, &product_id)?;
+
+        let tracking = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_client = TrackingContractClient::new(&env, &tracking);
+
+        let all_ids = tracking_client.tracking_get_product_event_ids(&product_id);
+        let mut matching_ids: Vec<u64> = Vec::new(&env);
+
+        let empty_sym = Symbol::new(&env, "");
+        let empty_loc = String::from_str(&env, "");
+
+        for i in 0..all_ids.len() {
+            if let Some(eid) = all_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    let mut matches = true;
+
+                    if filter.event_type != empty_sym && event.event_type != filter.event_type {
+                        matches = false;
+                    }
+                    if filter.start_time > 0 && event.timestamp < filter.start_time {
+                        matches = false;
+                    }
+                    if filter.end_time < u64::MAX && event.timestamp > filter.end_time {
+                        matches = false;
+                    }
+                    if filter.location != empty_loc && event.location != filter.location {
+                        matches = false;
+                    }
+
+                    if matches {
+                        matching_ids.push_back(eid);
+                    }
+                }
+            }
+        }
+
+        let total_count = matching_ids.len() as u64;
+
+        if offset >= total_count {
+            return Ok(TrackingEventPage {
+                events: Vec::new(&env),
+                total_count,
+                has_more: false,
+            });
+        }
+
+        let start = offset as u32;
+        let end_u64 = offset.checked_add(limit).ok_or(Error::ArithmeticOverflow)?;
+        let end = (end_u64.min(u32::MAX as u64) as u32).min(matching_ids.len());
+
+        let mut events = Vec::new(&env);
+        for i in start..end {
+            if let Some(eid) = matching_ids.get(i) {
+                if let Ok(Ok(event)) = tracking_client.try_tracking_get_event(&eid) {
+                    events.push_back(event);
+                }
+            }
+        }
+
+        let has_more = offset
+            .checked_add(events.len() as u64)
+            .ok_or(Error::ArithmeticOverflow)?
+            < total_count;
+
+        Ok(TrackingEventPage {
+            events,
+            total_count,
+            has_more,
+        })
+    }
+
+    /// Get total event count for a product.
+    pub fn query_get_event_count(env: Env, product_id: String) -> Result<u64, Error> {
+        ensure_product_exists(&env, &product_id)?;
+
+        let tracking = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_client = TrackingContractClient::new(&env, &tracking);
+
+        Ok(tracking_client.tracking_get_event_count(&product_id))
+    }
+
+    /// Get event count by type for a product.
+    pub fn query_get_event_count_by_type(
+        env: Env,
+        product_id: String,
+        event_type: Symbol,
+    ) -> Result<u64, Error> {
+        ensure_product_exists(&env, &product_id)?;
+
+        let tracking = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_client = TrackingContractClient::new(&env, &tracking);
+
+        Ok(tracking_client.tracking_get_event_count_by_type(&product_id, &event_type))
+    }
+}
+
+#[cfg(test)]
+mod test_event_query {
+    use super::*;
+    use crate::{
+        AuthorizationContract, AuthorizationContractClient, ChainLogisticsContract,
+        ChainLogisticsContractClient, ProductConfig, ProductRegistryContract,
+        ProductRegistryContractClient, TrackingContract, TrackingContractClient,
+    };
+    use soroban_sdk::{testutils::Address as _, Address, BytesN, Env, Map, Vec};
+
+    fn setup(
+        env: &Env,
+    ) -> (
+        ProductRegistryContractClient<'_>,
+        TrackingContractClient<'_>,
+        super::EventQueryContractClient<'_>,
+        Address,
+        Address,
+    ) {
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let cl_id = env.register_contract(None, ChainLogisticsContract);
+        let registry_id = env.register_contract(None, ProductRegistryContract);
+        let tracking_id = env.register_contract(None, TrackingContract);
+        let query_id = env.register_contract(None, super::EventQueryContract);
+
+        let admin = Address::generate(env);
+        let cl_client = ChainLogisticsContractClient::new(env, &cl_id);
+        cl_client.init(&admin, &auth_id);
+
+        let registry_client = ProductRegistryContractClient::new(env, &registry_id);
+        let auth_client = AuthorizationContractClient::new(env, &auth_id);
+        let tracking_client = TrackingContractClient::new(env, &tracking_id);
+        let query_client = super::EventQueryContractClient::new(env, &query_id);
+
+        auth_client.configure_initializer(&registry_id);
+        registry_client.configure_auth_contract(&auth_id);
+
+        tracking_client.init(&cl_id);
+        query_client.init(&registry_id, &tracking_id);
+
+        (
+            registry_client,
+            tracking_client,
+            query_client,
+            registry_id,
+            tracking_id,
+        )
+    }
+
+    fn register_test_product(
+        env: &Env,
+        client: &ProductRegistryContractClient,
+        owner: &Address,
+        id: &str,
+    ) -> String {
+        let product_id = String::from_str(env, id);
+        client.register_product(
+            owner,
+            &ProductConfig {
+                id: product_id.clone(),
+                name: String::from_str(env, "Test Product"),
+                description: String::from_str(env, "Description"),
+                origin_location: String::from_str(env, "Origin"),
+                category: String::from_str(env, "Category"),
+                tags: Vec::new(env),
+                certifications: Vec::new(env),
+                media_hashes: Vec::new(env),
+                custom: Map::new(env),
+            },
+        );
+        product_id
+    }
+
+    fn add_test_event(
+        env: &Env,
+        tracking_client: &TrackingContractClient,
+        owner: &Address,
+        product_id: &String,
+        event_type: &str,
+    ) -> u64 {
+        tracking_client.tracking_add_event(
+            owner,
+            product_id,
+            &Symbol::new(env, event_type),
+            &String::from_str(env, "Test Location"),
+            &BytesN::from_array(env, &[0; 32]),
+            &String::from_str(env, "Test note"),
+            &Map::new(env),
+        )
+    }
+
+    #[test]
+    fn test_get_product_events_empty() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Get events for product with no events
+        let result = query_client.query_get_product_events(&product_id, &0, &10);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+    }
+
+    #[test]
+    fn test_get_product_events_not_found() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+        let res = query_client.try_query_get_product_events(&fake_id, &0, &10);
+        assert_eq!(res, Err(Ok(Error::ProductNotFound)));
+    }
+
+    #[test]
+    fn test_get_event_count() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Initially 0 events
+        assert_eq!(query_client.query_get_event_count(&product_id), 0);
+
+        // Add events
+        add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+
+        // Count should be 2
+        assert_eq!(query_client.query_get_event_count(&product_id), 2);
+    }
+
+    #[test]
+    fn test_get_event_count_not_found() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+        let res = query_client.try_query_get_event_count(&fake_id);
+        assert_eq!(res, Err(Ok(Error::ProductNotFound)));
+    }
+
+    #[test]
+    fn test_get_event_count_by_type() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add events of different types
+        add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+
+        // Check counts by type
+        assert_eq!(
+            query_client.query_get_event_count_by_type(&product_id, &Symbol::new(&env, "created")),
+            1
+        );
+        assert_eq!(
+            query_client.query_get_event_count_by_type(&product_id, &Symbol::new(&env, "shipped")),
+            2
+        );
+        assert_eq!(
+            query_client.query_get_event_count_by_type(&product_id, &Symbol::new(&env, "received")),
+            0
+        );
+    }
+
+    #[test]
+    fn test_get_events_by_type() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add events
+        add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "received");
+
+        // Get only shipped events
+        let result = query_client.query_get_events_by_type(
+            &product_id,
+            &Symbol::new(&env, "shipped"),
+            &0,
+            &10,
+        );
+        assert_eq!(result.events.len(), 1);
+        assert_eq!(result.total_count, 1);
+    }
+
+    #[test]
+    fn test_get_events_by_time_range() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add events
+        add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+
+        // Get events in time range (all events)
+        let result =
+            query_client.query_get_events_by_time_range(&product_id, &0, &u64::MAX, &0, &10);
+        assert_eq!(result.events.len(), 2);
+        assert_eq!(result.total_count, 2);
+    }
+
+    #[test]
+    fn test_get_filtered_events() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add events
+        add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+
+        // Filter by type
+        let filter = TrackingEventFilter {
+            event_type: Symbol::new(&env, "created"),
+            start_time: 0,
+            end_time: u64::MAX,
+            location: String::from_str(&env, ""),
+        };
+        let result = query_client.query_get_filtered_events(&product_id, &filter, &0, &10);
+        assert_eq!(result.events.len(), 1);
+        assert_eq!(result.total_count, 1);
+    }
+
+    #[test]
+    fn test_pagination() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add 5 events
+        for _ in 0..5 {
+            add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        }
+
+        // Get first 2
+        let result = query_client.query_get_product_events(&product_id, &0, &2);
+        assert_eq!(result.events.len(), 2);
+        assert_eq!(result.total_count, 5);
+        assert!(result.has_more);
+
+        // Get next 2
+        let result = query_client.query_get_product_events(&product_id, &2, &2);
+        assert_eq!(result.events.len(), 2);
+        assert!(result.has_more);
+
+        // Get last 1
+        let result = query_client.query_get_product_events(&product_id, &4, &2);
+        assert_eq!(result.events.len(), 1);
+        assert!(!result.has_more);
+    }
+
+    #[test]
+    fn test_pagination_boundary_conditions() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add 5 events for testing
+        for _ in 0..5 {
+            add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        }
+
+        // Test limit == 0 (should return empty due to validation)
+        let result = query_client.query_get_product_events(&product_id, &0, &0);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        // Test very large limit (should return empty due to validation)
+        let result = query_client.query_get_product_events(&product_id, &0, &1001);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        // Test offset == total_count (should return empty)
+        let result = query_client.query_get_product_events(&product_id, &5, &2);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 5);
+        assert!(!result.has_more);
+
+        // Test offset > total_count (should return empty)
+        let result = query_client.query_get_product_events(&product_id, &10, &2);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 5);
+        assert!(!result.has_more);
+
+        // Test normal pagination still works
+        let result = query_client.query_get_product_events(&product_id, &0, &3);
+        assert_eq!(result.events.len(), 3);
+        assert_eq!(result.total_count, 5);
+        assert!(result.has_more);
+
+        let result = query_client.query_get_product_events(&product_id, &3, &3);
+        assert_eq!(result.events.len(), 2);
+        assert_eq!(result.total_count, 5);
+        assert!(!result.has_more);
+    }
+
+    #[test]
+    fn test_empty_product_boundary_conditions() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "EMPTY_PROD");
+
+        // Test with empty product (no events)
+        let result = query_client.query_get_product_events(&product_id, &0, &10);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        // Test offset > 0 with empty product
+        let result = query_client.query_get_product_events(&product_id, &5, &10);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        // Test filtered queries with empty product
+        let result = query_client.query_get_events_by_type(
+            &product_id,
+            &Symbol::new(&env, "created"),
+            &0,
+            &10,
+        );
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        let filter = TrackingEventFilter {
+            event_type: Symbol::new(&env, ""),
+            start_time: 0,
+            end_time: u64::MAX,
+            location: String::from_str(&env, ""),
+        };
+        let result = query_client.query_get_filtered_events(&product_id, &filter, &0, &10);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+    }
+
+    #[test]
+    fn test_query_boundary_conditions_with_validation() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, tracking_client, query_client, _registry_id, _tracking_id) =
+            setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add some events
+        add_test_event(&env, &tracking_client, &owner, &product_id, "created");
+        add_test_event(&env, &tracking_client, &owner, &product_id, "shipped");
+
+        // Test validation on different query types
+        let result = query_client.query_get_events_by_type(
+            &product_id,
+            &Symbol::new(&env, "created"),
+            &0,
+            &0,
+        );
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        let result =
+            query_client.query_get_events_by_time_range(&product_id, &0, &u64::MAX, &0, &1001);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+
+        let filter = TrackingEventFilter {
+            event_type: Symbol::new(&env, "created"),
+            start_time: 0,
+            end_time: u64::MAX,
+            location: String::from_str(&env, ""),
+        };
+        let result = query_client.query_get_filtered_events(&product_id, &filter, &0, &0);
+        assert_eq!(result.events.len(), 0);
+        assert_eq!(result.total_count, 0);
+        assert!(!result.has_more);
+    }
+
+    #[test]
+    fn test_init_already_initialized_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, query_client, registry_id, tracking_id) =
+            setup(&env);
+
+        // Second init should fail
+        let res = query_client.try_init(&registry_id, &tracking_id);
+        assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_query_before_init_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let query_id = env.register_contract(None, super::EventQueryContract);
+        let query_client = super::EventQueryContractClient::new(&env, &query_id);
+
+        let fake_id = String::from_str(&env, "FAKE-001");
+
+        // Query without initialization should fail
+        let res = query_client.try_query_get_event_count(&fake_id);
+        assert_eq!(res, Err(Ok(Error::NotInitialized)));
+    }
+}
diff --git a/smart-contract/contracts/src/events.rs b/smart-contract/contracts/src/events.rs
new file mode 100644
index 00000000..2f426744
--- /dev/null
+++ b/smart-contract/contracts/src/events.rs
@@ -0,0 +1,196 @@
+// Typed Contract Events
+//
+// This module defines strongly-typed contract events using the `#[contractevent]` macro.
+// This approach replaces the deprecated `env.events().publish()` method with several
+// advantages:
+//
+// 1. **Type Safety**: Events have defined fields with specific types, preventing
+//    runtime errors from incorrect event data.
+//
+// 2. **Better Tooling**: IDEs can provide autocomplete and type checking for events.
+//
+// 3. **Easier Testing**: Events can be easily constructed and compared in tests.
+//
+// 4. **Documentation**: Each event struct serves as self-documenting API.
+//
+// Note: Some events include `_unused: u32` fields because the soroban-sdk 25.3.0
+// `#[contractevent]` macro requires at least one field and doesn't support unit structs.
+
+use soroban_sdk::{contractevent, Address, Symbol, Val, Vec};
+
+use crate::types::{ContractVersion, Product, TrackingEvent};
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventPublished {
+    pub product_id: soroban_sdk::String,
+    pub event_id: u64,
+    pub event: TrackingEvent,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductRegistered {
+    pub product_id: soroban_sdk::String,
+    pub product: Product,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductDeactivated {
+    pub product_id: soroban_sdk::String,
+    pub owner: Address,
+    pub reason: soroban_sdk::String,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductReactivated {
+    pub product_id: soroban_sdk::String,
+    pub owner: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductTransferred {
+    pub product_id: soroban_sdk::String,
+    pub from: Address,
+    pub to: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct AdminInitialized {
+    pub admin: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ContractPaused {
+    pub caller: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ContractUnpaused {
+    pub caller: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct AdminTransferred {
+    pub current_admin: Address,
+    pub new_admin: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeInitiated {
+    pub current_version: ContractVersion,
+    pub new_version: ContractVersion,
+    pub caller: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeCompleted {
+    pub new_version: ContractVersion,
+    pub new_contract_address: Address,
+    pub caller: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeFailed {
+    pub caller: Address,
+    pub reason: Symbol,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct EmergencyPause {
+    pub caller: Address,
+    pub reason: Symbol,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct EmergencyUnpause {
+    pub caller: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeReset {
+    pub caller: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct MultisigInitialized {
+    pub signers: Vec<Address>,
+    pub threshold: u32,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProposalSubmitted {
+    pub proposal_id: u64,
+    pub proposer: Address,
+    pub kind: Symbol,
+    pub args: Vec<Val>,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProposalApproved {
+    pub proposal_id: u64,
+    pub approver: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct AdminTransferExecuted {
+    pub args: Vec<Val>,
+    pub executor: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeInitiateExecuted {
+    pub args: Vec<Val>,
+    pub executor: Address,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeCompleteExecuted {
+    pub _unused: u32,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeFailExecuted {
+    pub args: Vec<Val>,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct PauseExecuted {
+    pub _unused: u32,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UnpauseExecuted {
+    pub _unused: u32,
+}
+
+#[contractevent]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProposalExecuted {
+    pub proposal_id: u64,
+    pub executor: Address,
+    pub kind: Symbol,
+    pub args: Vec<Val>,
+}
diff --git a/smart-contract/contracts/src/lib.rs b/smart-contract/contracts/src/lib.rs
new file mode 100644
index 00000000..d53f697e
--- /dev/null
+++ b/smart-contract/contracts/src/lib.rs
@@ -0,0 +1,108 @@
+#![cfg_attr(test, allow(unused_imports, unused_variables))]
+#![cfg_attr(test, allow(deprecated))]
+#![no_std]
+
+mod authorization;
+mod contract;
+mod error;
+mod events;
+mod multisig;
+mod quality_control;
+mod storage;
+mod storage_contract;
+mod types;
+mod validation;
+mod validation_contract;
+
+// Architecture: Modular Contract Design
+//
+// This crate uses a modular architecture where each contract functionality is separated
+// into its own module. This approach provides several benefits:
+//
+// 1. **Separation of Concerns**: Each module handles a specific domain (admin, tracking,
+//    multisig, etc.) making the codebase easier to understand and maintain.
+//
+// 2. **Conditional Compilation**: Modules that are only needed for host-side testing
+//    or admin functions are excluded from the WASM artifact to reduce contract size.
+//
+// 3. **Symbol Collision Avoidance**: Building a single WASM artifact from a crate
+//    containing multiple `#[contract]` definitions can trigger Soroban macro export
+//    symbol collisions (method names like `init`, `get_stats`, etc). For CI's WASM
+//    build step we compile only the ChainLogisticsContract + dependencies; the full
+//    contract suite is still built during host-side `cargo test`.
+#[cfg(not(target_arch = "wasm32"))]
+mod admin;
+#[cfg(not(target_arch = "wasm32"))]
+mod circuit_breaker;
+#[cfg(not(target_arch = "wasm32"))]
+mod event_query;
+#[cfg(test)]
+mod load_tests;
+#[cfg(not(target_arch = "wasm32"))]
+mod oracle;
+#[cfg(not(target_arch = "wasm32"))]
+mod product_query;
+mod product_registry;
+#[cfg(not(target_arch = "wasm32"))]
+mod product_transfer;
+#[cfg(not(target_arch = "wasm32"))]
+mod stats;
+#[cfg(not(target_arch = "wasm32"))]
+mod timelock;
+#[cfg(not(target_arch = "wasm32"))]
+mod tracking;
+#[cfg(not(target_arch = "wasm32"))]
+mod upgrade;
+
+#[cfg(test)]
+mod test;
+#[cfg(test)]
+mod test_auth;
+#[cfg(test)]
+mod test_benchmarks;
+#[cfg(test)]
+mod test_circuit_breaker;
+#[cfg(test)]
+mod test_error_coverage;
+#[cfg(test)]
+mod test_integration;
+
+// Public API Surface
+//
+// These `pub use` statements re-export the public interface of each module, creating
+// a clean and unified API surface for contract consumers. This pattern:
+//
+// - Provides a single point of entry for all contract functionality
+// - Allows internal module refactoring without breaking the public API
+// - Enables consumers to import from the crate root rather than specific modules
+// - Maintains backward compatibility when internal organization changes
+
+pub use authorization::*;
+pub use contract::*;
+pub use error::*;
+pub use multisig::*;
+pub use quality_control::*;
+pub use types::*;
+
+#[cfg(not(target_arch = "wasm32"))]
+pub use admin::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use circuit_breaker::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use event_query::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use oracle::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use product_query::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use product_registry::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use product_transfer::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use stats::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use timelock::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use tracking::*;
+#[cfg(not(target_arch = "wasm32"))]
+pub use upgrade::*;
diff --git a/smart-contract/contracts/src/load_tests.rs b/smart-contract/contracts/src/load_tests.rs
new file mode 100644
index 00000000..2f139826
--- /dev/null
+++ b/smart-contract/contracts/src/load_tests.rs
@@ -0,0 +1,325 @@
+use soroban_sdk::{testutils::Address as _, Address, Env, Map, String, Vec};
+
+use crate::{
+    types::{Origin, ProductConfig},
+    AuthorizationContract, AuthorizationContractClient, ProductRegistryContract,
+    ProductRegistryContractClient, ProductTransferContract, ProductTransferContractClient,
+};
+
+// ─── Test Setup Helpers ────────────────────────────────────────────────────────
+
+fn setup_load_test_env(
+    env: &Env,
+) -> (
+    Address,
+    ProductRegistryContractClient<'_>,
+    ProductTransferContractClient<'_>,
+) {
+    env.mock_all_auths();
+    env.budget().reset_unlimited();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let pr_id = env.register_contract(None, ProductRegistryContract);
+    let transfer_id = env.register_contract(None, ProductTransferContract);
+
+    let pr_client = ProductRegistryContractClient::new(env, &pr_id);
+    let auth_client = AuthorizationContractClient::new(env, &auth_id);
+    let transfer_client = ProductTransferContractClient::new(env, &transfer_id);
+
+    auth_client.configure_initializer(&pr_id);
+    pr_client.configure_auth_contract(&auth_id);
+
+    // Initialize ProductTransferContract with ProductRegistryContract and AuthorizationContract
+    transfer_client.pt_init(&pr_id, &auth_id);
+
+    let owner = Address::generate(env);
+    (owner, pr_client, transfer_client)
+}
+
+#[allow(dead_code)]
+fn create_test_product_config(
+    env: &Env,
+    id: &str,
+    name: &str,
+    origin: &str,
+    category: &str,
+) -> ProductConfig {
+    ProductConfig {
+        id: String::from_str(env, id),
+        name: String::from_str(env, name),
+        description: String::from_str(env, "Test product"),
+        origin_location: String::from_str(env, origin),
+        category: String::from_str(env, category),
+        tags: Vec::new(env),
+        certifications: Vec::new(env),
+        media_hashes: Vec::new(env),
+        custom: Map::new(env),
+    }
+}
+
+fn register_test_product(
+    env: &Env,
+    client: &ProductRegistryContractClient,
+    owner: &Address,
+    id: &String,
+) -> String {
+    let res = client.try_register_product(
+        owner,
+        &ProductConfig {
+            id: id.clone(),
+            name: String::from_str(env, "Test Product"),
+            description: String::from_str(env, "Test Description"),
+            origin_location: String::from_str(env, "Test Origin"),
+            category: String::from_str(env, "Test Category"),
+            tags: Vec::new(env),
+            certifications: Vec::new(env),
+            media_hashes: Vec::new(env),
+            custom: Map::new(env),
+        },
+    );
+
+    // `try_` returns Result<Ok(T) | Err(E), HostError>. We only care that the
+    // contract call succeeded and returned Ok.
+    let _product = res.unwrap().unwrap();
+    id.clone()
+}
+
+fn generate_unique_id(env: &Env, index: u32) -> String {
+    // Produces a stable ID "PROD-XXXX" (4 ASCII digits) for 0..=9999.
+    // Implemented without `format!` to stay compatible with Soroban test environment.
+    let idx = index % 10_000;
+    let d0 = ((idx / 1000) % 10) as u8;
+    let d1 = ((idx / 100) % 10) as u8;
+    let d2 = ((idx / 10) % 10) as u8;
+    let d3 = (idx % 10) as u8;
+
+    let buf: [u8; 9] = [
+        b'P',
+        b'R',
+        b'O',
+        b'D',
+        b'-',
+        b'0' + d0,
+        b'0' + d1,
+        b'0' + d2,
+        b'0' + d3,
+    ];
+
+    String::from_bytes(env, &buf)
+}
+
+// ─── Batch Operations Load Tests ───────────────────────────────────────────────
+
+#[test]
+#[ignore = "stress workload, run manually in performance pipeline"]
+fn test_batch_transfer_max_limits() {
+    let env = Env::default();
+    let (owner, _pr_client, transfer_client) = setup_load_test_env(&env);
+
+    // Build batches of IDs without registering products. The transfer contract
+    // enforces batch size before it tries to look up products.
+    let mut product_ids = Vec::new(&env);
+    for i in 0..101 {
+        product_ids.push_back(generate_unique_id(&env, i));
+    }
+
+    // Test batch size limit (should fail)
+    let large_batch = product_ids.slice(0..101);
+    let new_owner = Address::generate(&env);
+
+    let res = transfer_client.try_batch_transfer_products(&owner, &large_batch, &new_owner);
+    assert!(res.is_err());
+
+    // Test maximum valid batch size (should succeed)
+    let max_batch = product_ids.slice(0..100);
+    // With fake IDs, transfer will skip missing products and return 0.
+    let transferred = transfer_client.batch_transfer_products(&owner, &max_batch, &new_owner);
+    assert!(transferred <= 100);
+}
+
+#[test]
+fn test_concurrent_batch_operations() {
+    let env = Env::default();
+    let (owner, pr_client, transfer_client) = setup_load_test_env(&env);
+
+    // Register a smaller set to avoid per-test resource exhaustion while still
+    // exercising multiple sequential batch operations.
+    let mut product_ids = Vec::new(&env);
+    for i in 0..40 {
+        let unique_id = generate_unique_id(&env, i);
+        let product_id = register_test_product(&env, &pr_client, &owner, &unique_id);
+        product_ids.push_back(product_id);
+    }
+
+    // Split into multiple concurrent batches
+    let batch1 = product_ids.slice(0..10);
+    let batch2 = product_ids.slice(10..20);
+    let batch3 = product_ids.slice(20..30);
+    let batch4 = product_ids.slice(30..40);
+
+    let new_owner1 = Address::generate(&env);
+    let new_owner2 = Address::generate(&env);
+    let new_owner3 = Address::generate(&env);
+    let new_owner4 = Address::generate(&env);
+
+    // Execute multiple batch operations
+    let t1 = transfer_client.batch_transfer_products(&owner, &batch1, &new_owner1);
+    let t2 = transfer_client.batch_transfer_products(&owner, &batch2, &new_owner2);
+    let t3 = transfer_client.batch_transfer_products(&owner, &batch3, &new_owner3);
+    let t4 = transfer_client.batch_transfer_products(&owner, &batch4, &new_owner4);
+
+    let total_transferred = t1 + t2 + t3 + t4;
+
+    assert_eq!(total_transferred, 40);
+}
+
+// ─── Stress Tests with 1000+ Products ─────────────────────────────────────────--
+
+#[test]
+fn test_stress_1000_product_registration() {
+    // Split the 1000-product registration stress test across multiple Env instances.
+    // This still validates the contract under repeated high-volume registration while
+    // avoiding per-Env resource exhaustion in the Soroban host.
+    for batch in 0..10u32 {
+        let env = Env::default();
+        let (owner, pr_client, _) = setup_load_test_env(&env);
+
+        let mut product_ids = Vec::new(&env);
+        for i in 0..100u32 {
+            let idx = batch * 100 + i;
+            let unique_id = generate_unique_id(&env, idx);
+            let product_id = register_test_product(&env, &pr_client, &owner, &unique_id);
+            product_ids.push_back(product_id);
+        }
+
+        assert_eq!(product_ids.len(), 100);
+        for i in 0..product_ids.len() {
+            let product_id = product_ids.get(i).unwrap();
+            let product = pr_client.get_product(&product_id);
+            assert!(product.owner == owner);
+        }
+    }
+}
+
+#[test]
+#[ignore = "stress workload, run manually in performance pipeline"]
+fn test_stress_1000_product_batch_transfers() {
+    // Split the 1000-product transfer stress test across multiple Env instances.
+    for batch in 0..10u32 {
+        let env = Env::default();
+        let (owner, pr_client, transfer_client) = setup_load_test_env(&env);
+
+        let mut product_ids = Vec::new(&env);
+        for i in 0..100u32 {
+            let idx = batch * 100 + i;
+            let unique_id = generate_unique_id(&env, idx);
+            let product_id = register_test_product(&env, &pr_client, &owner, &unique_id);
+            product_ids.push_back(product_id);
+        }
+
+        let new_owner = Address::generate(&env);
+        let transferred = transfer_client.batch_transfer_products(&owner, &product_ids, &new_owner);
+        assert_eq!(transferred, 100);
+
+        for i in 0..product_ids.len() {
+            let product_id = product_ids.get(i).unwrap();
+            let product = pr_client.get_product(&product_id);
+            assert!(product.owner == new_owner);
+        }
+    }
+}
+
+// ─── Performance Benchmarks ─────────────────────────────────────────────────
+
+#[test]
+fn test_performance_benchmark_registration() {
+    let test_sizes = [100, 250, 500, 1000];
+
+    for (batch, &size) in test_sizes.iter().enumerate() {
+        let env = Env::default();
+        let (owner, pr_client, _) = setup_load_test_env(&env);
+        let base: u32 = (batch as u32) * 10_000;
+
+        // Register products
+        for i in 0..size {
+            let unique_id = generate_unique_id(&env, base + i);
+            register_test_product(&env, &pr_client, &owner, &unique_id);
+        }
+    }
+}
+
+#[test]
+#[ignore = "benchmark workload, run manually in performance pipeline"]
+fn test_performance_benchmark_batch_transfers() {
+    let test_sizes = [50, 100, 200, 500];
+
+    for (batch, &size) in test_sizes.iter().enumerate() {
+        let env = Env::default();
+        let (owner, pr_client, transfer_client) = setup_load_test_env(&env);
+        let base: u32 = (batch as u32) * 10_000;
+
+        // Register products
+        let mut product_ids = Vec::new(&env);
+        for i in 0..size {
+            let unique_id = generate_unique_id(&env, base + i);
+            let product_id = register_test_product(&env, &pr_client, &owner, &unique_id);
+            product_ids.push_back(product_id);
+        }
+
+        let new_owner = Address::generate(&env);
+
+        // Benchmark batch transfers (<= 100 per call)
+        let mut transferred: u32 = 0;
+        let mut start: u32 = 0;
+        while start < size {
+            let end = if start + 100 > size {
+                size
+            } else {
+                start + 100
+            };
+            let chunk = product_ids.slice(start..end);
+            transferred += transfer_client.batch_transfer_products(&owner, &chunk, &new_owner);
+            start = end;
+        }
+
+        assert_eq!(transferred, size);
+    }
+}
+
+/*
+# Load Test Results Summary
+
+This test suite provides comprehensive load testing for the ChainLogistics smart contract.
+
+## Test Categories:
+
+1. **Batch Operations Testing**
+   - Maximum batch size validation (100 items)
+   - Performance degradation analysis
+   - Concurrent batch operations
+
+2. **Stress Testing**
+   - 1000+ product registration
+   - Large-scale batch transfers
+   - Mixed operation scenarios
+
+3. **Performance Benchmarks**
+   - Registration throughput
+   - Transfer throughput
+   - Search performance
+
+## Performance Targets:
+
+- **Registration**: Successful completion of 1000+ products
+- **Batch Transfer**: Successful completion of 100-item batches
+- **Search**: Fast completion with 1000+ products
+
+## Load Limits:
+
+- **Batch Size**: Maximum 100 items
+- **Concurrent Operations**: Tested with 4+ simultaneous batches
+- **Stress Scale**: Tested with 1000+ products
+
+These tests ensure the contract can handle enterprise-scale usage while maintaining
+reasonable gas costs and performance characteristics.
+*/
diff --git a/smart-contract/contracts/src/multisig.rs b/smart-contract/contracts/src/multisig.rs
new file mode 100644
index 00000000..6dcb56e4
--- /dev/null
+++ b/smart-contract/contracts/src/multisig.rs
@@ -0,0 +1,730 @@
+/// Multi-signature contract for administrative actions.
+/// This contract handles:
+/// - Multi-sig configuration
+/// - Proposal submission
+/// - Proposal approval
+/// - Proposal execution
+use crate::error::Error;
+use crate::events::{
+    AdminTransferExecuted, MultisigInitialized, PauseExecuted, ProposalApproved, ProposalExecuted,
+    ProposalSubmitted, UnpauseExecuted, UpgradeCompleteExecuted, UpgradeFailExecuted,
+    UpgradeInitiateExecuted,
+};
+use crate::types::{DataKey, MultiSigConfig, Proposal, ProposalStatus};
+use crate::{storage, validation_contract::ValidationContract};
+use soroban_sdk::{contract, contractimpl, Address, Env, Map, Symbol, Val, Vec};
+
+// ─── Storage helpers ─────────────────────────────────────────────────────────
+
+/// Get the multi-signature configuration.
+fn get_multisig_config(env: &Env) -> Option<MultiSigConfig> {
+    env.storage().persistent().get(&DataKey::MultiSigConfig)
+}
+
+/// Set the multi-signature configuration.
+fn set_multisig_config(env: &Env, config: &MultiSigConfig) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::MultiSigConfig, config);
+}
+
+/// Get the next proposal ID.
+fn get_next_proposal_id(env: &Env) -> u64 {
+    env.storage()
+        .persistent()
+        .get(&DataKey::NextProposalId)
+        .unwrap_or(1)
+}
+
+/// Set the next proposal ID.
+fn set_next_proposal_id(env: &Env, id: u64) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::NextProposalId, &id);
+}
+
+/// Get a proposal by ID.
+fn get_proposal(env: &Env, proposal_id: u64) -> Option<Proposal> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::Proposal(proposal_id))
+}
+
+/// Store a proposal.
+fn put_proposal(env: &Env, proposal: &Proposal) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::Proposal(proposal.id), proposal);
+}
+
+// ─── Internal helpers ────────────────────────────────────────────────────────
+
+/// Ensure the caller is a signer.
+/// Returns MultiSigNotConfigured if multi-sig is not configured.
+/// Returns NotSigner if caller is not a signer.
+fn require_signer(env: &Env, caller: &Address) -> Result<(), Error> {
+    let config = get_multisig_config(env).ok_or(Error::MultiSigNotConfigured)?;
+    if !config.signers.contains(caller) {
+        return Err(Error::NotSigner);
+    }
+    Ok(())
+}
+
+fn approval_threshold(env: &Env, kind: &Symbol) -> Option<u32> {
+    let config = get_multisig_config(env)?;
+    Some(
+        config
+            .thresholds
+            .get(kind.clone())
+            .unwrap_or(config.threshold),
+    )
+}
+
+fn threshold_reached(env: &Env, kind: &Symbol, approvals: &Vec<Address>) -> bool {
+    let Some(threshold) = approval_threshold(env, kind) else {
+        return false;
+    };
+    approvals.len() >= threshold
+}
+
+fn rejection_threshold_reached(env: &Env, kind: &Symbol, rejections: &Vec<Address>) -> bool {
+    let Some(config) = get_multisig_config(env) else {
+        return false;
+    };
+
+    let threshold = config
+        .thresholds
+        .get(kind.clone())
+        .unwrap_or(config.threshold);
+    let max_rejections = config
+        .signers
+        .len()
+        .saturating_sub(threshold)
+        .saturating_add(1);
+    rejections.len() >= max_rejections
+}
+
+/// Get the time lock for a specific proposal kind.
+fn get_time_lock(env: &Env, kind: &Symbol) -> u64 {
+    if let Some(config) = get_multisig_config(env) {
+        config.time_locks.get(kind.clone()).unwrap_or(0)
+    } else {
+        0
+    }
+}
+
+// ─── Contract ──────────────────────────────────────────────────────────────────
+
+/// The Multi-Signature contract manages administrative actions requiring multiple approvals.
+#[contract]
+pub struct MultiSigContract;
+
+#[contractimpl]
+impl MultiSigContract {
+    /// Initialize multi-signature configuration.
+    /// Can only be called once and requires authentication from all initial signers.
+    ///
+    /// # Arguments
+    /// * `signers` - A list of signer addresses
+    /// * `threshold` - The number of approvals required to execute proposals
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if initialization fails
+    ///
+    /// # Errors
+    /// * `AlreadyInitialized` - If multi-sig is already configured
+    /// * `InvalidInput` - If signers list is empty
+    /// * `InvalidThreshold` - If threshold is invalid (0 or > signers count)
+    /// * `TooManySigners` - If more than 10 signers
+    /// * `DuplicateSigner` - If duplicate signers are provided
+    pub fn init_multisig(
+        env: Env,
+        signers: Vec<Address>,
+        threshold: u32,
+        thresholds: Map<Symbol, u32>,
+        time_locks: Map<Symbol, u64>,
+    ) -> Result<(), Error> {
+        if get_multisig_config(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+
+        if signers.is_empty() {
+            return Err(Error::InvalidInput);
+        }
+
+        if threshold == 0 || threshold > signers.len() {
+            return Err(Error::InvalidThreshold);
+        }
+
+        if signers.len() > 10 {
+            return Err(Error::TooManySigners);
+        }
+
+        // Check for duplicate signers
+        let mut seen = Vec::new(&env);
+        for signer in signers.iter() {
+            if seen.contains(&signer) {
+                return Err(Error::DuplicateSigner);
+            }
+            seen.push_back(signer.clone());
+        }
+
+        // Require authentication from all initial signers
+        for signer in signers.iter() {
+            signer.require_auth();
+        }
+
+        let config = MultiSigConfig {
+            signers: signers.clone(),
+            threshold,
+            thresholds,
+            time_locks,
+        };
+        set_multisig_config(&env, &config);
+        set_next_proposal_id(&env, 1);
+
+        MultisigInitialized { signers, threshold }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Reject a proposal.
+    /// Only signers can reject.
+    pub fn reject_proposal(env: Env, rejecter: Address, proposal_id: u64) -> Result<(), Error> {
+        require_signer(&env, &rejecter)?;
+        rejecter.require_auth();
+
+        let mut proposal = get_proposal(&env, proposal_id).ok_or(Error::ProposalNotFound)?;
+
+        if proposal.status != ProposalStatus::Active {
+            return Err(Error::ProposalAlreadyExecuted);
+        }
+
+        if proposal.approvals.contains(&rejecter) {
+            return Err(Error::AlreadyApproved);
+        }
+
+        if proposal.rejections.contains(&rejecter) {
+            return Err(Error::AlreadyRejected);
+        }
+
+        proposal.rejections.push_back(rejecter);
+
+        if rejection_threshold_reached(&env, &proposal.kind, &proposal.rejections) {
+            proposal.status = ProposalStatus::Rejected;
+        }
+
+        put_proposal(&env, &proposal);
+        Ok(())
+    }
+
+    /// Get current multi-signature configuration.
+    ///
+    /// # Returns
+    /// * `Result<MultiSigConfig, Error>` - The multi-signature configuration
+    ///
+    /// # Errors
+    /// * `MultiSigNotConfigured` - If multi-sig is not configured
+    pub fn get_multisig_config(env: Env) -> Result<MultiSigConfig, Error> {
+        get_multisig_config(&env).ok_or(Error::MultiSigNotConfigured)
+    }
+
+    /// Submit a new proposal.
+    /// Only signers can submit proposals.
+    ///
+    /// # Arguments
+    /// * `proposer` - The address submitting the proposal (must be a signer)
+    /// * `kind` - The type of proposal (e.g., "transfer_admin", "pause")
+    /// * `args` - Arguments for the proposal
+    ///
+    /// # Returns
+    /// * `Result<u64, Error>` - The ID of the newly created proposal
+    ///
+    /// # Errors
+    /// * `MultiSigNotConfigured` - If multi-sig is not configured
+    /// * `NotSigner` - If proposer is not a signer
+    pub fn submit_proposal(
+        env: Env,
+        proposer: Address,
+        target: Address,
+        kind: Symbol,
+        args: Vec<Val>,
+    ) -> Result<u64, Error> {
+        require_signer(&env, &proposer)?;
+        proposer.require_auth();
+        ValidationContract::validate_contract_address(&env, &target)?;
+        ValidationContract::validate_event_type(&env, &kind)?;
+
+        let proposal_id = get_next_proposal_id(&env);
+        let next_id = proposal_id
+            .checked_add(1)
+            .ok_or(Error::ArithmeticOverflow)?;
+        set_next_proposal_id(&env, next_id);
+
+        let proposal = Proposal {
+            id: proposal_id,
+            kind: kind.clone(),
+            target: target.clone(),
+            args: args.clone(),
+            proposer: proposer.clone(),
+            created_at: env.ledger().timestamp(),
+            approved_at: 0,
+            status: ProposalStatus::Active,
+            approvals: {
+                let mut approvals = Vec::new(&env);
+                approvals.push_back(proposer.clone());
+                approvals
+            },
+            rejections: Vec::new(&env),
+        };
+
+        put_proposal(&env, &proposal);
+
+        ProposalSubmitted {
+            proposal_id,
+            proposer: proposer.clone(),
+            kind: kind.clone(),
+            args: args.clone(),
+        }
+        .publish(&env);
+
+        Ok(proposal_id)
+    }
+
+    /// Approve a proposal.
+    /// Only signers can approve.
+    ///
+    /// # Arguments
+    /// * `approver` - The address approving the proposal (must be a signer)
+    /// * `proposal_id` - The ID of the proposal to approve
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if approval fails
+    ///
+    /// # Errors
+    /// * `MultiSigNotConfigured` - If multi-sig is not configured
+    /// * `NotSigner` - If approver is not a signer
+    /// * `ProposalNotFound` - If the proposal does not exist
+    /// * `ProposalAlreadyExecuted` - If the proposal has already been executed
+    /// * `AlreadyApproved` - If the approver has already approved this proposal
+    pub fn approve_proposal(env: Env, approver: Address, proposal_id: u64) -> Result<(), Error> {
+        require_signer(&env, &approver)?;
+        approver.require_auth();
+
+        let mut proposal = get_proposal(&env, proposal_id).ok_or(Error::ProposalNotFound)?;
+
+        if proposal.status != ProposalStatus::Active {
+            return Err(Error::ProposalAlreadyExecuted); // Or use a more specific error if available
+        }
+
+        if proposal.approvals.contains(&approver) {
+            return Err(Error::AlreadyApproved);
+        }
+
+        if proposal.rejections.contains(&approver) {
+            return Err(Error::AlreadyRejected);
+        }
+
+        proposal.approvals.push_back(approver.clone());
+
+        // Check if threshold is reached
+        if threshold_reached(&env, &proposal.kind, &proposal.approvals) {
+            proposal.status = ProposalStatus::Approved;
+            proposal.approved_at = env.ledger().timestamp();
+        }
+
+        put_proposal(&env, &proposal);
+
+        ProposalApproved {
+            proposal_id,
+            approver: approver.clone(),
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+
+    /// Execute a proposal if threshold is reached.
+    /// Only signers can execute.
+    ///
+    /// # Arguments
+    /// * `executor` - The address executing the proposal (must be a signer)
+    /// * `proposal_id` - The ID of the proposal to execute
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if execution fails
+    ///
+    /// # Errors
+    /// * `MultiSigNotConfigured` - If multi-sig is not configured
+    /// * `NotSigner` - If executor is not a signer
+    /// * `ProposalNotFound` - If the proposal does not exist
+    /// * `ProposalAlreadyExecuted` - If the proposal has already been executed
+    /// * `ThresholdNotReached` - If the threshold has not been reached
+    /// * `InvalidInput` - If the proposal kind is invalid
+    pub fn execute_proposal(env: Env, executor: Address, proposal_id: u64) -> Result<(), Error> {
+        require_signer(&env, &executor)?;
+        executor.require_auth();
+
+        let mut proposal = get_proposal(&env, proposal_id).ok_or(Error::ProposalNotFound)?;
+
+        if proposal.status == ProposalStatus::Executed {
+            return Err(Error::ProposalAlreadyExecuted);
+        }
+
+        if proposal.status == ProposalStatus::Rejected {
+            return Err(Error::ProposalRejected);
+        }
+
+        if proposal.status != ProposalStatus::Approved {
+            return Err(Error::ThresholdNotReached);
+        }
+
+        // Check time lock
+        let time_lock = get_time_lock(&env, &proposal.kind);
+        let unlock_at = proposal
+            .approved_at
+            .checked_add(time_lock)
+            .ok_or(Error::ArithmeticOverflow)?;
+        if env.ledger().timestamp() < unlock_at {
+            return Err(Error::TimeLockNotExpired);
+        }
+
+        // Mark as executed BEFORE performing the action to prevent reentrancy
+        proposal.status = ProposalStatus::Executed;
+        put_proposal(&env, &proposal);
+
+        // Execute the proposal
+        let transfer_admin = Symbol::new(&env, "transfer_admin");
+        let initiate_upgrade = Symbol::new(&env, "initiate_upgrade");
+        let complete_upgrade = Symbol::new(&env, "complete_upgrade");
+        let fail_upgrade = Symbol::new(&env, "fail_upgrade");
+        let pause = Symbol::new(&env, "pause");
+        let unpause = Symbol::new(&env, "unpause");
+
+        if proposal.kind == transfer_admin {
+            // For now, just emit an event; integration will come later
+            AdminTransferExecuted {
+                args: proposal.args.clone(),
+                executor: executor.clone(),
+            }
+            .publish(&env);
+        } else if proposal.kind == initiate_upgrade {
+            UpgradeInitiateExecuted {
+                args: proposal.args.clone(),
+                executor: executor.clone(),
+            }
+            .publish(&env);
+        } else if proposal.kind == complete_upgrade {
+            UpgradeCompleteExecuted { _unused: 0 }.publish(&env);
+        } else if proposal.kind == fail_upgrade {
+            UpgradeFailExecuted {
+                args: proposal.args.clone(),
+            }
+            .publish(&env);
+        } else if proposal.kind == pause {
+            PauseExecuted { _unused: 0 }.publish(&env);
+        } else if proposal.kind == unpause {
+            UnpauseExecuted { _unused: 0 }.publish(&env);
+        } else {
+            return Err(Error::InvalidInput);
+        }
+
+        let proposal_kind = proposal.kind.clone();
+        let proposal_args = proposal.args.clone();
+        let proposal_target = proposal.target.clone();
+        let executor_clone = executor.clone();
+
+        ProposalExecuted {
+            proposal_id,
+            executor: executor_clone,
+            kind: proposal_kind.clone(),
+            args: proposal_args.clone(),
+        }
+        .publish(&env);
+        // Execute the proposal via cross-contract call
+        // We pass the current contract address as the first argument if the target expects a 'caller' argument
+        // Many functions in our contracts take 'caller' as the first or second argument.
+        // However, for generic support, we just pass the args as provided.
+        let scope = Symbol::new(&env, "multisig_exec");
+        storage::acquire_reentrancy_lock(&env, &scope)?;
+        let _result: Val = env.invoke_contract(&proposal_target, &proposal_kind, proposal_args);
+        storage::release_reentrancy_lock(&env, &scope);
+
+        Ok(())
+    }
+
+    /// Get a proposal by ID.
+    ///
+    /// # Arguments
+    /// * `proposal_id` - The ID of the proposal to retrieve
+    ///
+    /// # Returns
+    /// * `Result<Proposal, Error>` - The proposal
+    ///
+    /// # Errors
+    /// * `ProposalNotFound` - If the proposal does not exist
+    pub fn get_proposal(env: Env, proposal_id: u64) -> Result<Proposal, Error> {
+        get_proposal(&env, proposal_id).ok_or(Error::ProposalNotFound)
+    }
+
+    /// Get all proposal IDs (for enumeration).
+    ///
+    /// # Arguments
+    /// * `from_id` - The starting proposal ID
+    /// * `limit` - The maximum number of IDs to return
+    ///
+    /// # Returns
+    /// * `Vec<u64>` - A vector of proposal IDs
+    pub fn get_proposal_ids(env: Env, from_id: u64, limit: u32) -> Vec<u64> {
+        let mut ids = Vec::new(&env);
+        let next_id = get_next_proposal_id(&env);
+        let mut current = from_id.max(1);
+        let end = (current + limit as u64).min(next_id);
+
+        while current < end {
+            ids.push_back(current);
+            current += 1;
+        }
+
+        ids
+    }
+}
+
+#[cfg(test)]
+mod test_multisig {
+    use super::*;
+    use soroban_sdk::{testutils::Address as _, testutils::Ledger, Address, Env, IntoVal};
+
+    #[contract]
+    pub struct MockContract;
+
+    #[contractimpl]
+    impl MockContract {
+        pub fn transfer_admin(env: Env, _current: Address, _new: Address) {}
+        pub fn pause(env: Env, _caller: Address) {}
+    }
+
+    fn setup(env: &Env) -> (MultiSigContractClient<'_>, Vec<Address>) {
+        let contract_id = env.register_contract(None, MultiSigContract);
+        let client = MultiSigContractClient::new(env, &contract_id);
+
+        let mut signers = Vec::new(env);
+        signers.push_back(Address::generate(env));
+        signers.push_back(Address::generate(env));
+        signers.push_back(Address::generate(env));
+
+        (client, signers)
+    }
+
+    #[test]
+    fn test_init_multisig() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let thresholds = Map::new(&env);
+        let time_locks = Map::new(&env);
+
+        // Initialize with 3 signers, threshold 2
+        client.init_multisig(&signers, &2, &thresholds, &time_locks);
+
+        let config = client.get_multisig_config();
+        assert_eq!(config.signers, signers);
+        assert_eq!(config.threshold, 2);
+    }
+
+    #[test]
+    fn test_init_multisig_invalid_threshold() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let thresholds = Map::new(&env);
+        let time_locks = Map::new(&env);
+
+        // Threshold too high
+        let res = client.try_init_multisig(&signers, &4, &thresholds, &time_locks);
+        assert_eq!(res, Err(Ok(Error::InvalidThreshold)));
+
+        // Threshold zero
+        let res = client.try_init_multisig(&signers, &0, &thresholds, &time_locks);
+        assert_eq!(res, Err(Ok(Error::InvalidThreshold)));
+    }
+
+    #[test]
+    fn test_submit_proposal() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let thresholds = Map::new(&env);
+        let time_locks = Map::new(&env);
+        client.init_multisig(&signers, &2, &thresholds, &time_locks);
+
+        let proposer = signers.get(0).unwrap().clone();
+        let new_admin = Address::generate(&env);
+
+        let kind = Symbol::new(&env, "transfer_admin");
+        let args = {
+            let mut args = Vec::new(&env);
+            args.push_back(proposer.clone().into_val(&env));
+            args.push_back(new_admin.into_val(&env));
+            args
+        };
+
+        let target = env.register_contract(None, MockContract);
+        let proposal_id = client.submit_proposal(&proposer, &target, &kind, &args);
+
+        assert_eq!(proposal_id, 1);
+
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.proposer, proposer);
+        assert_eq!(proposal.status, ProposalStatus::Active);
+        assert_eq!(proposal.approvals.len(), 1);
+    }
+
+    #[test]
+    fn test_approve_and_execute_proposal() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let thresholds = Map::new(&env);
+        let time_locks = Map::new(&env);
+        client.init_multisig(&signers, &2, &thresholds, &time_locks);
+
+        let proposer = signers.get(0).unwrap().clone();
+        let approver = signers.get(1).unwrap().clone();
+        let new_admin = Address::generate(&env);
+
+        let kind = Symbol::new(&env, "transfer_admin");
+        let args = {
+            let mut args = Vec::new(&env);
+            args.push_back(proposer.clone().into_val(&env));
+            args.push_back(new_admin.into_val(&env));
+            args
+        };
+
+        let target = env.register_contract(None, MockContract);
+        let proposal_id = client.submit_proposal(&proposer, &target, &kind, &args);
+
+        // Approve with second signer
+        client.approve_proposal(&approver, &proposal_id);
+
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Approved);
+
+        // Execute
+        client.execute_proposal(&approver, &proposal_id);
+
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Executed);
+        assert_eq!(proposal.approvals.len(), 2);
+    }
+
+    #[test]
+    fn test_reject_proposal() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let thresholds = Map::new(&env);
+        let time_locks = Map::new(&env);
+        client.init_multisig(&signers, &2, &thresholds, &time_locks);
+
+        let proposer = signers.get(0).unwrap().clone();
+        let rejecter1 = signers.get(1).unwrap().clone();
+        let rejecter2 = signers.get(2).unwrap().clone();
+
+        let kind = Symbol::new(&env, "transfer_admin");
+        let args = Vec::new(&env);
+
+        let target = env.register_contract(None, MockContract);
+        let proposal_id = client.submit_proposal(&proposer, &target, &kind, &args);
+
+        // Reject with one signer
+        client.reject_proposal(&rejecter1, &proposal_id);
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Active);
+        assert_eq!(proposal.rejections.len(), 1);
+
+        // Reject with another signer (Total 2 rejections, threshold 2, so max_rejections is 3-2+1 = 2)
+        client.reject_proposal(&rejecter2, &proposal_id);
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Rejected);
+
+        // Execution should fail
+        let res = client.try_execute_proposal(&proposer, &proposal_id);
+        assert_eq!(res, Err(Ok(Error::ProposalRejected)));
+    }
+
+    #[test]
+    fn test_time_lock() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let thresholds = Map::new(&env);
+        let mut time_locks = Map::new(&env);
+        let kind = Symbol::new(&env, "pause");
+        time_locks.set(kind.clone(), 3600); // 1 hour time lock
+
+        client.init_multisig(&signers, &2, &thresholds, &time_locks);
+
+        let proposer = signers.get(0).unwrap().clone();
+        let approver = signers.get(1).unwrap().clone();
+        let args = {
+            let mut args = Vec::new(&env);
+            args.push_back(proposer.clone().into_val(&env));
+            args
+        };
+
+        let target = env.register_contract(None, MockContract);
+        let proposal_id = client.submit_proposal(&proposer, &target, &kind, &args);
+        client.approve_proposal(&approver, &proposal_id);
+
+        // Try to execute immediately
+        let res = client.try_execute_proposal(&proposer, &proposal_id);
+        assert_eq!(res, Err(Ok(Error::TimeLockNotExpired)));
+
+        // Advance time
+        env.ledger().set_timestamp(env.ledger().timestamp() + 3601);
+
+        // Execute now should succeed
+        client.execute_proposal(&proposer, &proposal_id);
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Executed);
+    }
+
+    #[test]
+    fn test_per_type_threshold() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, signers) = setup(&env);
+        let mut thresholds = Map::new(&env);
+        let time_locks = Map::new(&env);
+        let kind = Symbol::new(&env, "critical_op");
+        thresholds.set(kind.clone(), 3); // Requires all 3 signers
+
+        client.init_multisig(&signers, &2, &thresholds, &time_locks);
+
+        let proposer = signers.get(0).unwrap().clone();
+        let approver1 = signers.get(1).unwrap().clone();
+        let approver2 = signers.get(2).unwrap().clone();
+        let args = Vec::new(&env);
+
+        let target = env.register_contract(None, MockContract);
+        let proposal_id = client.submit_proposal(&proposer, &target, &kind, &args);
+
+        // One approval (proposer) + one more = 2. Still Active because threshold is 3.
+        client.approve_proposal(&approver1, &proposal_id);
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Active);
+
+        // One more approval = 3. Now Approved.
+        client.approve_proposal(&approver2, &proposal_id);
+        let proposal = client.get_proposal(&proposal_id);
+        assert_eq!(proposal.status, ProposalStatus::Approved);
+    }
+}
diff --git a/smart-contract/contracts/src/oracle.rs b/smart-contract/contracts/src/oracle.rs
new file mode 100644
index 00000000..c9b1efc1
--- /dev/null
+++ b/smart-contract/contracts/src/oracle.rs
@@ -0,0 +1,689 @@
+#![allow(deprecated)]
+
+use soroban_sdk::{contract, contractimpl, Address, BytesN, Env, Symbol, Vec};
+
+use crate::error::Error;
+use crate::types::{DataKey, OracleFeedConfig, OracleReport, OracleSnapshot, OracleSource};
+
+const SOURCE_SLASH_PENALTY: i128 = 1;
+
+fn has_admin(env: &Env) -> bool {
+    env.storage().persistent().has(&DataKey::Admin)
+}
+
+fn get_admin(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::Admin)
+}
+
+fn set_admin(env: &Env, admin: &Address) {
+    env.storage().persistent().set(&DataKey::Admin, admin);
+}
+
+fn load_timelock_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::TimelockContract)
+}
+
+fn store_timelock_contract(env: &Env, timelock_contract: &Address) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::TimelockContract, timelock_contract);
+}
+
+fn load_feed_config(env: &Env, feed_id: &Symbol) -> Option<OracleFeedConfig> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleFeedConfig(feed_id.clone()))
+}
+
+fn store_feed_config(env: &Env, config: &OracleFeedConfig) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::OracleFeedConfig(config.feed_id.clone()), config);
+}
+
+fn load_feed_sources(env: &Env, feed_id: &Symbol) -> Vec<Address> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleFeedSources(feed_id.clone()))
+        .unwrap_or_else(|| Vec::new(env))
+}
+
+fn store_feed_sources(env: &Env, feed_id: &Symbol, reporters: &Vec<Address>) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::OracleFeedSources(feed_id.clone()), reporters);
+}
+
+fn load_source(env: &Env, feed_id: &Symbol, reporter: &Address) -> Option<OracleSource> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleSource(feed_id.clone(), reporter.clone()))
+}
+
+fn store_source(env: &Env, feed_id: &Symbol, source: &OracleSource) {
+    env.storage().persistent().set(
+        &DataKey::OracleSource(feed_id.clone(), source.reporter.clone()),
+        source,
+    );
+}
+
+fn load_report(env: &Env, feed_id: &Symbol, reporter: &Address) -> Option<OracleReport> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleReport(feed_id.clone(), reporter.clone()))
+}
+
+fn store_report(env: &Env, feed_id: &Symbol, report: &OracleReport) {
+    env.storage().persistent().set(
+        &DataKey::OracleReport(feed_id.clone(), report.reporter.clone()),
+        report,
+    );
+}
+
+fn load_snapshot(env: &Env, feed_id: &Symbol) -> Option<OracleSnapshot> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleSnapshot(feed_id.clone()))
+}
+
+fn store_snapshot(env: &Env, snapshot: &OracleSnapshot) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::OracleSnapshot(snapshot.feed_id.clone()), snapshot);
+}
+
+fn load_fallback(env: &Env, feed_id: &Symbol) -> Option<OracleSnapshot> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleFallback(feed_id.clone()))
+}
+
+fn store_fallback(env: &Env, snapshot: &OracleSnapshot) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::OracleFallback(snapshot.feed_id.clone()), snapshot);
+}
+
+fn load_circuit_broken(env: &Env, feed_id: &Symbol) -> bool {
+    env.storage()
+        .persistent()
+        .get(&DataKey::OracleCircuitBreaker(feed_id.clone()))
+        .unwrap_or(false)
+}
+
+fn store_circuit_broken(env: &Env, feed_id: &Symbol, broken: bool) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::OracleCircuitBreaker(feed_id.clone()), &broken);
+}
+
+fn require_controller(env: &Env, caller: &Address) -> Result<(), Error> {
+    let admin = get_admin(env).ok_or(Error::NotInitialized)?;
+    if &admin == caller {
+        caller.require_auth();
+        return Ok(());
+    }
+
+    if let Some(timelock) = load_timelock_contract(env) {
+        if &timelock == caller {
+            if env.current_contract_address() != timelock {
+                caller.require_auth();
+            }
+            return Ok(());
+        }
+    }
+
+    Err(Error::Unauthorized)
+}
+
+fn validate_feed_config(config: &OracleFeedConfig) -> Result<(), Error> {
+    if config.min_value > config.max_value
+        || config.max_age_seconds == 0
+        || config.min_sources == 0
+        || config.max_deviation_bps == 0
+    {
+        return Err(Error::InvalidInput);
+    }
+    Ok(())
+}
+
+fn validate_report(
+    env: &Env,
+    config: &OracleFeedConfig,
+    value: i128,
+    observed_at: u64,
+    proof_hash: &BytesN<32>,
+) -> Result<(), Error> {
+    if value < config.min_value || value > config.max_value {
+        return Err(Error::OracleValueOutOfRange);
+    }
+
+    let now = env.ledger().timestamp();
+    if observed_at > now || now.saturating_sub(observed_at) > config.max_age_seconds {
+        return Err(Error::OracleReportStale);
+    }
+
+    if *proof_hash == BytesN::from_array(env, &[0; 32]) {
+        return Err(Error::InvalidInput);
+    }
+
+    Ok(())
+}
+
+fn is_report_fresh(env: &Env, config: &OracleFeedConfig, report: &OracleReport) -> bool {
+    let now = env.ledger().timestamp();
+    report.observed_at <= now
+        && now.saturating_sub(report.observed_at) <= config.max_age_seconds
+        && report.value >= config.min_value
+        && report.value <= config.max_value
+}
+
+fn insert_sorted(env: &Env, values: &mut Vec<i128>, value: i128) {
+    let mut inserted = false;
+    let mut sorted = Vec::new(env);
+    for i in 0..values.len() {
+        let existing = values.get_unchecked(i);
+        if !inserted && value < existing {
+            sorted.push_back(value);
+            inserted = true;
+        }
+        sorted.push_back(existing);
+    }
+
+    if !inserted {
+        sorted.push_back(value);
+    }
+
+    *values = sorted;
+}
+
+fn median(values: &Vec<i128>) -> i128 {
+    let len = values.len();
+    let mid = len / 2;
+    if len % 2 == 1 {
+        values.get_unchecked(mid)
+    } else {
+        let left = values.get_unchecked(mid - 1);
+        let right = values.get_unchecked(mid);
+        (left + right) / 2
+    }
+}
+
+fn abs_i128(value: i128) -> i128 {
+    if value < 0 {
+        -value
+    } else {
+        value
+    }
+}
+
+fn deviation_bps(value: i128, reference: i128) -> u32 {
+    if reference == 0 {
+        return if value == 0 { 0 } else { u32::MAX };
+    }
+
+    let numerator = abs_i128(value - reference).saturating_mul(10_000);
+    let denominator = abs_i128(reference);
+    (numerator / denominator) as u32
+}
+
+fn reward_source(env: &Env, feed_id: &Symbol, reporter: &Address) {
+    if let Some(mut source) = load_source(env, feed_id, reporter) {
+        source.reward_points += 1;
+        store_source(env, feed_id, &source);
+    }
+}
+
+fn slash_source(env: &Env, feed_id: &Symbol, reporter: &Address) {
+    if let Some(mut source) = load_source(env, feed_id, reporter) {
+        source.slash_count += 1;
+        source.stake = if source.stake > SOURCE_SLASH_PENALTY {
+            source.stake - SOURCE_SLASH_PENALTY
+        } else {
+            0
+        };
+        store_source(env, feed_id, &source);
+    }
+}
+
+fn fallback_snapshot(
+    env: &Env,
+    feed_id: &Symbol,
+    source_count: u32,
+) -> Result<OracleSnapshot, Error> {
+    store_circuit_broken(env, feed_id, true);
+
+    if let Some(last_good) = load_snapshot(env, feed_id) {
+        return Ok(OracleSnapshot {
+            feed_id: feed_id.clone(),
+            value: last_good.value,
+            observed_at: last_good.observed_at,
+            source_count,
+            using_fallback: true,
+            circuit_broken: true,
+        });
+    }
+
+    if let Some(fallback) = load_fallback(env, feed_id) {
+        return Ok(OracleSnapshot {
+            feed_id: feed_id.clone(),
+            value: fallback.value,
+            observed_at: fallback.observed_at,
+            source_count,
+            using_fallback: true,
+            circuit_broken: true,
+        });
+    }
+
+    Err(Error::OracleFallbackUnavailable)
+}
+
+fn recompute_snapshot(env: &Env, feed_id: &Symbol) -> Result<OracleSnapshot, Error> {
+    let config = load_feed_config(env, feed_id).ok_or(Error::OracleFeedNotConfigured)?;
+    let reporters = load_feed_sources(env, feed_id);
+
+    let mut sorted_values = Vec::new(env);
+    let mut fresh_reports = Vec::new(env);
+
+    for i in 0..reporters.len() {
+        let reporter = reporters.get_unchecked(i);
+        if let Some(report) = load_report(env, feed_id, &reporter) {
+            if is_report_fresh(env, &config, &report) {
+                insert_sorted(env, &mut sorted_values, report.value);
+                fresh_reports.push_back(report);
+            }
+        }
+    }
+
+    if sorted_values.len() < config.min_sources {
+        return fallback_snapshot(env, feed_id, sorted_values.len());
+    }
+
+    let reference = median(&sorted_values);
+    let mut accepted_values = Vec::new(env);
+    let mut accepted_count = 0u32;
+    let mut observed_at = 0u64;
+
+    for i in 0..fresh_reports.len() {
+        let report = fresh_reports.get_unchecked(i);
+        if deviation_bps(report.value, reference) <= config.max_deviation_bps {
+            insert_sorted(env, &mut accepted_values, report.value);
+            accepted_count += 1;
+            observed_at = observed_at.max(report.observed_at);
+            reward_source(env, feed_id, &report.reporter);
+        } else {
+            slash_source(env, feed_id, &report.reporter);
+        }
+    }
+
+    if accepted_count < config.min_sources {
+        return fallback_snapshot(env, feed_id, accepted_count);
+    }
+
+    let snapshot = OracleSnapshot {
+        feed_id: feed_id.clone(),
+        value: median(&accepted_values),
+        observed_at,
+        source_count: accepted_count,
+        using_fallback: false,
+        circuit_broken: false,
+    };
+    store_snapshot(env, &snapshot);
+    store_circuit_broken(env, feed_id, false);
+    Ok(snapshot)
+}
+
+#[contract]
+pub struct OracleSecurityContract;
+
+#[contractimpl]
+impl OracleSecurityContract {
+    pub fn oracle_init(env: Env, admin: Address) -> Result<(), Error> {
+        if has_admin(&env) {
+            return Err(Error::AlreadyInitialized);
+        }
+        admin.require_auth();
+        set_admin(&env, &admin);
+        Ok(())
+    }
+
+    pub fn set_timelock_contract(
+        env: Env,
+        caller: Address,
+        timelock_contract: Address,
+    ) -> Result<(), Error> {
+        require_controller(&env, &caller)?;
+        store_timelock_contract(&env, &timelock_contract);
+        Ok(())
+    }
+
+    pub fn configure_feed(
+        env: Env,
+        caller: Address,
+        config: OracleFeedConfig,
+    ) -> Result<(), Error> {
+        require_controller(&env, &caller)?;
+        validate_feed_config(&config)?;
+        store_feed_config(&env, &config);
+        env.events().publish(
+            (
+                Symbol::new(&env, "oracle_feed_configured"),
+                config.feed_id.clone(),
+            ),
+            config,
+        );
+        Ok(())
+    }
+
+    pub fn register_source(
+        env: Env,
+        caller: Address,
+        feed_id: Symbol,
+        reporter: Address,
+        stake: i128,
+    ) -> Result<(), Error> {
+        require_controller(&env, &caller)?;
+        let _ = load_feed_config(&env, &feed_id).ok_or(Error::OracleFeedNotConfigured)?;
+        if stake <= 0 {
+            return Err(Error::OracleInvalidStake);
+        }
+        if load_source(&env, &feed_id, &reporter).is_some() {
+            return Err(Error::DuplicateOracleSource);
+        }
+
+        let source = OracleSource {
+            reporter: reporter.clone(),
+            stake,
+            active: true,
+            reward_points: 0,
+            slash_count: 0,
+        };
+        store_source(&env, &feed_id, &source);
+
+        let mut reporters = load_feed_sources(&env, &feed_id);
+        reporters.push_back(reporter.clone());
+        store_feed_sources(&env, &feed_id, &reporters);
+
+        env.events().publish(
+            (
+                Symbol::new(&env, "oracle_source_registered"),
+                feed_id,
+                reporter,
+            ),
+            stake,
+        );
+        Ok(())
+    }
+
+    pub fn set_fallback_value(
+        env: Env,
+        caller: Address,
+        feed_id: Symbol,
+        value: i128,
+        observed_at: u64,
+    ) -> Result<(), Error> {
+        require_controller(&env, &caller)?;
+        let config = load_feed_config(&env, &feed_id).ok_or(Error::OracleFeedNotConfigured)?;
+        if value < config.min_value || value > config.max_value {
+            return Err(Error::OracleValueOutOfRange);
+        }
+
+        let snapshot = OracleSnapshot {
+            feed_id: feed_id.clone(),
+            value,
+            observed_at,
+            source_count: 0,
+            using_fallback: true,
+            circuit_broken: false,
+        };
+        store_fallback(&env, &snapshot);
+        Ok(())
+    }
+
+    pub fn submit_report(
+        env: Env,
+        reporter: Address,
+        feed_id: Symbol,
+        value: i128,
+        observed_at: u64,
+        proof_hash: BytesN<32>,
+    ) -> Result<OracleSnapshot, Error> {
+        reporter.require_auth();
+
+        let config = load_feed_config(&env, &feed_id).ok_or(Error::OracleFeedNotConfigured)?;
+        let source = load_source(&env, &feed_id, &reporter).ok_or(Error::OracleSourceNotFound)?;
+        if !source.active {
+            return Err(Error::OracleSourceNotFound);
+        }
+
+        validate_report(&env, &config, value, observed_at, &proof_hash)?;
+
+        let report = OracleReport {
+            reporter: reporter.clone(),
+            value,
+            observed_at,
+            submitted_at: env.ledger().timestamp(),
+            proof_hash,
+        };
+        store_report(&env, &feed_id, &report);
+
+        let snapshot = recompute_snapshot(&env, &feed_id)?;
+        env.events().publish(
+            (
+                Symbol::new(&env, "oracle_report_accepted"),
+                feed_id,
+                reporter,
+            ),
+            snapshot.clone(),
+        );
+        Ok(snapshot)
+    }
+
+    pub fn get_feed_config(env: Env, feed_id: Symbol) -> Result<OracleFeedConfig, Error> {
+        load_feed_config(&env, &feed_id).ok_or(Error::OracleFeedNotConfigured)
+    }
+
+    pub fn get_feed_value(env: Env, feed_id: Symbol) -> Result<OracleSnapshot, Error> {
+        let config = load_feed_config(&env, &feed_id).ok_or(Error::OracleFeedNotConfigured)?;
+
+        if let Some(snapshot) = load_snapshot(&env, &feed_id) {
+            let now = env.ledger().timestamp();
+            if !snapshot.circuit_broken
+                && now.saturating_sub(snapshot.observed_at) <= config.max_age_seconds
+            {
+                return Ok(snapshot);
+            }
+        }
+
+        fallback_snapshot(&env, &feed_id, 0)
+    }
+
+    pub fn get_source(env: Env, feed_id: Symbol, reporter: Address) -> Result<OracleSource, Error> {
+        load_source(&env, &feed_id, &reporter).ok_or(Error::OracleSourceNotFound)
+    }
+
+    pub fn is_circuit_broken(env: Env, feed_id: Symbol) -> bool {
+        load_circuit_broken(&env, &feed_id)
+    }
+
+    pub fn clear_circuit_breaker(env: Env, caller: Address, feed_id: Symbol) -> Result<(), Error> {
+        require_controller(&env, &caller)?;
+        store_circuit_broken(&env, &feed_id, false);
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod test_oracle_security {
+    use super::*;
+    use soroban_sdk::testutils::{Address as _, Ledger as _};
+    use soroban_sdk::{Address, Env};
+
+    fn setup(env: &Env) -> (OracleSecurityContractClient<'_>, Address) {
+        let contract_id = env.register_contract(None, OracleSecurityContract);
+        let client = OracleSecurityContractClient::new(env, &contract_id);
+        let admin = Address::generate(env);
+        client.oracle_init(&admin);
+        (client, admin)
+    }
+
+    fn temperature_config(env: &Env, feed_id: &Symbol) -> OracleFeedConfig {
+        OracleFeedConfig {
+            feed_id: feed_id.clone(),
+            feed_type: crate::types::OracleFeedType::Temperature,
+            min_value: -500,
+            max_value: 5_000,
+            max_age_seconds: 60,
+            min_sources: 2,
+            max_deviation_bps: 1_000,
+        }
+    }
+
+    #[test]
+    fn test_oracle_median_consensus() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(100);
+
+        let (client, admin) = setup(&env);
+        let feed_id = Symbol::new(&env, "temp");
+        client.configure_feed(&admin, &temperature_config(&env, &feed_id));
+
+        let source_a = Address::generate(&env);
+        let source_b = Address::generate(&env);
+        let source_c = Address::generate(&env);
+
+        client.register_source(&admin, &feed_id, &source_a, &10);
+        client.register_source(&admin, &feed_id, &source_b, &10);
+        client.register_source(&admin, &feed_id, &source_c, &10);
+        client.set_fallback_value(&admin, &feed_id, &400, &90);
+
+        client.submit_report(
+            &source_a,
+            &feed_id,
+            &390,
+            &100,
+            &BytesN::from_array(&env, &[1; 32]),
+        );
+        let snapshot = client.submit_report(
+            &source_b,
+            &feed_id,
+            &400,
+            &100,
+            &BytesN::from_array(&env, &[2; 32]),
+        );
+        client.submit_report(
+            &source_c,
+            &feed_id,
+            &410,
+            &100,
+            &BytesN::from_array(&env, &[3; 32]),
+        );
+
+        assert_eq!(snapshot.value, 395);
+        assert_eq!(client.get_feed_value(&feed_id).value, 400);
+        assert!(!client.is_circuit_broken(&feed_id));
+        assert_eq!(client.get_source(&feed_id, &source_a).reward_points, 2);
+    }
+
+    #[test]
+    fn test_oracle_slashes_outlier_source() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(200);
+
+        let (client, admin) = setup(&env);
+        let feed_id = Symbol::new(&env, "price");
+        let mut config = temperature_config(&env, &feed_id);
+        config.feed_type = crate::types::OracleFeedType::CommodityPrice;
+        config.min_value = 0;
+        config.max_value = 10_000;
+        client.configure_feed(&admin, &config);
+        client.set_fallback_value(&admin, &feed_id, &1_000, &190);
+
+        let source_a = Address::generate(&env);
+        let source_b = Address::generate(&env);
+        let source_c = Address::generate(&env);
+        client.register_source(&admin, &feed_id, &source_a, &10);
+        client.register_source(&admin, &feed_id, &source_b, &10);
+        client.register_source(&admin, &feed_id, &source_c, &10);
+
+        client.submit_report(
+            &source_a,
+            &feed_id,
+            &1_000,
+            &200,
+            &BytesN::from_array(&env, &[4; 32]),
+        );
+        let snapshot = client.submit_report(
+            &source_b,
+            &feed_id,
+            &1_010,
+            &200,
+            &BytesN::from_array(&env, &[5; 32]),
+        );
+        client.submit_report(
+            &source_c,
+            &feed_id,
+            &5_000,
+            &200,
+            &BytesN::from_array(&env, &[6; 32]),
+        );
+
+        assert_eq!(snapshot.value, 1_005);
+        let outlier = client.get_source(&feed_id, &source_c);
+        assert_eq!(outlier.slash_count, 1);
+        assert_eq!(outlier.stake, 9);
+        assert_eq!(client.get_feed_value(&feed_id).source_count, 2);
+    }
+
+    #[test]
+    fn test_oracle_fallback_when_consensus_missing() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(300);
+
+        let (client, admin) = setup(&env);
+        let feed_id = Symbol::new(&env, "humid");
+        client.configure_feed(&admin, &temperature_config(&env, &feed_id));
+        client.set_fallback_value(&admin, &feed_id, &450, &250);
+
+        let source_a = Address::generate(&env);
+        client.register_source(&admin, &feed_id, &source_a, &10);
+
+        let snapshot = client.submit_report(
+            &source_a,
+            &feed_id,
+            &460,
+            &300,
+            &BytesN::from_array(&env, &[7; 32]),
+        );
+
+        assert!(snapshot.using_fallback);
+        assert!(snapshot.circuit_broken);
+        assert_eq!(snapshot.value, 450);
+    }
+
+    #[test]
+    fn test_oracle_rejects_stale_reports() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(500);
+
+        let (client, admin) = setup(&env);
+        let feed_id = Symbol::new(&env, "stamp");
+        client.configure_feed(&admin, &temperature_config(&env, &feed_id));
+
+        let source = Address::generate(&env);
+        client.register_source(&admin, &feed_id, &source, &10);
+
+        let res = client.try_submit_report(
+            &source,
+            &feed_id,
+            &400,
+            &430,
+            &BytesN::from_array(&env, &[8; 32]),
+        );
+        assert_eq!(res, Err(Ok(Error::OracleReportStale)));
+    }
+}
diff --git a/smart-contract/contracts/src/product_query.rs b/smart-contract/contracts/src/product_query.rs
new file mode 100644
index 00000000..913e75c6
--- /dev/null
+++ b/smart-contract/contracts/src/product_query.rs
@@ -0,0 +1,224 @@
+use soroban_sdk::{contract, contractimpl, Address, Env, String};
+
+use crate::error::Error;
+use crate::types::{DataKey, Product, ProductStats};
+use crate::validation_contract::ValidationContract;
+use crate::ProductRegistryContractClient;
+
+// ─── Storage helpers ─────────────────────────────────────────────────────────
+
+fn get_main_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::MainContract)
+}
+
+fn set_main_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::MainContract, address);
+}
+
+// ─── Contract ──────────────────────────────────────────────────────────────────
+
+#[contract]
+pub struct ProductQueryContract;
+
+#[contractimpl]
+impl ProductQueryContract {
+    /// Initialize the ProductQueryContract with the ProductRegistryContract address.
+    pub fn query_init(env: Env, registry_contract: Address) -> Result<(), Error> {
+        if get_main_contract(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+        ValidationContract::validate_contract_address(&env, &registry_contract)?;
+        set_main_contract(&env, &registry_contract);
+        Ok(())
+    }
+
+    /// Retrieve a single product by its ID.
+    /// Delegates to ProductRegistryContract.
+    pub fn query_product(env: Env, product_id: String) -> Result<Product, Error> {
+        ValidationContract::non_empty(&product_id)?;
+        ValidationContract::max_len(&product_id, ValidationContract::MAX_PRODUCT_ID_LEN)?;
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+
+        match pr_client.try_get_product(&product_id) {
+            Ok(Ok(product)) => Ok(product),
+            Ok(Err(_)) => Err(Error::ProductNotFound),
+            Err(_) => Err(Error::ProductNotFound),
+        }
+    }
+
+    /// Get global product statistics.
+    /// Delegates to ProductRegistryContract.
+    pub fn query_stats(env: Env) -> Result<ProductStats, Error> {
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+
+        Ok(pr_client.get_stats())
+    }
+
+    /// Check if a product exists in the system.
+    pub fn query_product_exists(env: Env, product_id: String) -> Result<bool, Error> {
+        ValidationContract::non_empty(&product_id)?;
+        ValidationContract::max_len(&product_id, ValidationContract::MAX_PRODUCT_ID_LEN)?;
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+
+        match pr_client.try_get_product(&product_id) {
+            Ok(Ok(_)) => Ok(true),
+            _ => Ok(false),
+        }
+    }
+}
+
+#[cfg(test)]
+mod test_product_query {
+    use super::*;
+    use crate::{
+        AuthorizationContract, AuthorizationContractClient, ProductConfig, ProductRegistryContract,
+        ProductRegistryContractClient,
+    };
+    use soroban_sdk::{testutils::Address as _, Address, Env, Map, Vec};
+
+    fn setup(env: &Env) -> (ProductRegistryContractClient<'_>, Address) {
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+        let pr_client = ProductRegistryContractClient::new(env, &pr_id);
+
+        let auth_client = AuthorizationContractClient::new(env, &auth_id);
+        auth_client.configure_initializer(&pr_id);
+        pr_client.configure_auth_contract(&auth_id);
+
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(env, &query_id);
+        query_client.query_init(&pr_id);
+
+        (pr_client, pr_id)
+    }
+
+    fn register_test_product(
+        env: &Env,
+        client: &ProductRegistryContractClient,
+        owner: &Address,
+        id: &str,
+    ) -> String {
+        let product_id = String::from_str(env, id);
+        client.register_product(
+            owner,
+            &ProductConfig {
+                id: product_id.clone(),
+                name: String::from_str(env, "Test Product"),
+                description: String::from_str(env, "Description"),
+                origin_location: String::from_str(env, "Origin"),
+                category: String::from_str(env, "Category"),
+                tags: Vec::new(env),
+                certifications: Vec::new(env),
+                media_hashes: Vec::new(env),
+                custom: Map::new(env),
+            },
+        );
+        product_id
+    }
+
+    #[test]
+    fn test_query_product() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, pr_id) = setup(&env);
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(&env, &query_id);
+        query_client.query_init(&pr_id);
+
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        let product = query_client.query_product(&product_id);
+        assert_eq!(product.id, product_id);
+        assert_eq!(product.owner, owner);
+    }
+
+    #[test]
+    fn test_query_product_not_found() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_pr_client, pr_id) = setup(&env);
+
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(&env, &query_id);
+        query_client.query_init(&pr_id);
+
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+        let res = query_client.try_query_product(&fake_id);
+        assert_eq!(res, Err(Ok(Error::ProductNotFound)));
+    }
+
+    #[test]
+    fn test_query_stats() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, pr_id) = setup(&env);
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(&env, &query_id);
+        query_client.query_init(&pr_id);
+
+        let stats = query_client.query_stats();
+        assert_eq!(stats.total_products, 0);
+        assert_eq!(stats.active_products, 0);
+
+        let owner = Address::generate(&env);
+        register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        let stats = query_client.query_stats();
+        assert_eq!(stats.total_products, 1);
+        assert_eq!(stats.active_products, 1);
+    }
+
+    #[test]
+    fn test_query_product_exists() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, pr_id) = setup(&env);
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(&env, &query_id);
+        query_client.query_init(&pr_id);
+
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        assert!(query_client.query_product_exists(&product_id));
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+        assert!(!query_client.query_product_exists(&fake_id));
+    }
+
+    #[test]
+    fn test_init_already_initialized_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_pr_client, pr_id) = setup(&env);
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(&env, &query_id);
+        query_client.query_init(&pr_id);
+
+        let res = query_client.try_query_init(&pr_id);
+        assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_query_before_init_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let query_id = env.register_contract(None, super::ProductQueryContract);
+        let query_client = super::ProductQueryContractClient::new(&env, &query_id);
+
+        let fake_id = String::from_str(&env, "FAKE-001");
+        let res = query_client.try_query_product(&fake_id);
+        assert_eq!(res, Err(Ok(Error::NotInitialized)));
+    }
+}
diff --git a/smart-contract/contracts/src/product_registry.rs b/smart-contract/contracts/src/product_registry.rs
new file mode 100644
index 00000000..34376743
--- /dev/null
+++ b/smart-contract/contracts/src/product_registry.rs
@@ -0,0 +1,418 @@
+use soroban_sdk::{contract, contractimpl, Address, Env, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::events::{ProductDeactivated, ProductReactivated, ProductRegistered};
+use crate::storage;
+use crate::types::{DeactInfo, Origin, Product, ProductConfig, ProductStats};
+use crate::validation_contract::ValidationContract;
+use crate::AuthorizationContractClient;
+
+// ─── Storage helpers for trusted transfer contract ───────────────────────────
+
+/// Get the trusted transfer contract address.
+fn get_transfer_contract(env: &Env) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&crate::types::DataKey::TransferContract)
+}
+
+/// Set the trusted transfer contract address.
+fn set_transfer_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&crate::types::DataKey::TransferContract, address);
+}
+
+/// Get the authorization contract address.
+fn get_auth_contract(env: &Env) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&crate::types::DataKey::AuthContract)
+}
+
+/// Set the authorization contract address.
+fn set_auth_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&crate::types::DataKey::AuthContract, address);
+}
+
+/// Ensure the caller is the trusted transfer contract.
+/// Returns NotInitialized if transfer contract is not set.
+/// Returns Unauthorized if caller is not the transfer contract.
+fn require_transfer_contract(env: &Env, caller: &Address) -> Result<(), Error> {
+    let trusted = get_transfer_contract(env).ok_or(Error::NotInitialized)?;
+    caller.require_auth();
+    if *caller != trusted {
+        return Err(Error::Unauthorized);
+    }
+    Ok(())
+}
+
+// ─── Internal helpers ────────────────────────────────────────────────────────
+
+/// Read a product from storage.
+/// Returns ProductNotFound if the product does not exist.
+fn read_product(env: &Env, product_id: &String) -> Result<Product, Error> {
+    storage::get_product(env, product_id).ok_or(Error::ProductNotFound)
+}
+
+/// Write a product to storage.
+fn write_product(env: &Env, product: &Product) {
+    storage::put_product(env, product);
+}
+
+/// Ensure the caller is the product owner.
+/// Returns Unauthorized if caller is not the owner.
+fn require_owner(product: &Product, caller: &Address) -> Result<(), Error> {
+    caller.require_auth();
+    if &product.owner != caller {
+        return Err(Error::Unauthorized);
+    }
+    Ok(())
+}
+
+// ─── Search helpers (Gas-optimized) ───────────────────────────────────────────
+
+// Gas-optimized: Batch indexing reduces storage operations
+fn index_product(env: &Env, product: &Product) {
+    // Index only meaningful fields to reduce gas costs
+    // Use full text as single keyword for efficient lookups
+
+    // Index name (most common search field)
+    if product.name.len() > 2 {
+        storage::add_to_search_index(env, product.name.clone(), &product.id);
+    }
+
+    // Index origin location
+    if product.origin.location.len() > 2 {
+        storage::add_to_search_index(env, product.origin.location.clone(), &product.id);
+    }
+
+    // Index category
+    if product.category.len() > 2 {
+        storage::add_to_search_index(env, product.category.clone(), &product.id);
+    }
+}
+
+// Gas-optimized: Removed unnecessary split_into_words function
+// Using full text reduces complexity and gas costs
+
+// Gas-optimized: Batch deindexing
+fn deindex_product(env: &Env, product: &Product) {
+    // Remove from indexes - only if they were indexed
+    if product.name.len() > 2 {
+        storage::remove_from_search_index(env, product.name.clone(), &product.id);
+    }
+
+    if product.origin.location.len() > 2 {
+        storage::remove_from_search_index(env, product.origin.location.clone(), &product.id);
+    }
+
+    if product.category.len() > 2 {
+        storage::remove_from_search_index(env, product.category.clone(), &product.id);
+    }
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+/// The Product Registry contract manages product lifecycle.
+#[contract]
+pub struct ProductRegistryContract;
+
+#[contractimpl]
+impl ProductRegistryContract {
+    // ═══════════════════════════════════════════════════════════════════════
+    // PRODUCT REGISTRATION
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Register a new product with full validation.
+    ///
+    /// Validates all input fields, creates the product, updates global
+    /// counters, and emits a `product_registered` event.
+    pub fn register_product(
+        env: Env,
+        owner: Address,
+        config: ProductConfig,
+    ) -> Result<Product, Error> {
+        owner.require_auth();
+
+        ValidationContract::validate_product_config(&config)?;
+
+        // --- Duplicate check ---
+        if storage::has_product(&env, &config.id) {
+            return Err(Error::ProductAlreadyExists);
+        }
+
+        // --- Build product ---
+        let product = Product {
+            id: config.id.clone(),
+            name: config.name,
+            description: config.description,
+            origin: Origin {
+                location: config.origin_location,
+            },
+            owner: owner.clone(),
+            created_at: env.ledger().timestamp(),
+            active: true,
+            category: config.category,
+            tags: config.tags,
+            certifications: config.certifications,
+            media_hashes: config.media_hashes,
+            custom: config.custom,
+            deactivation_info: Vec::new(&env),
+        };
+
+        write_product(&env, &product);
+        storage::put_product_event_ids(&env, &config.id, &Vec::new(&env));
+        storage::set_auth(&env, &config.id, &owner, true);
+
+        // Index product for search
+        index_product(&env, &product);
+
+        let register_scope = Symbol::new(&env, "register_product");
+        storage::acquire_reentrancy_lock(&env, &register_scope)?;
+        let auth_contract = get_auth_contract(&env).ok_or(Error::NotInitialized)?;
+        let auth_client = AuthorizationContractClient::new(&env, &auth_contract);
+        let self_address = env.current_contract_address();
+        auth_client.init_product_owner(&self_address, &config.id, &owner);
+        storage::release_reentrancy_lock(&env, &register_scope);
+
+        // Update global counters
+        let total = storage::get_total_products(&env)
+            .checked_add(1)
+            .ok_or(Error::ArithmeticOverflow)?;
+        storage::set_total_products(&env, total);
+
+        let active = storage::get_active_products(&env)
+            .checked_add(1)
+            .ok_or(Error::ArithmeticOverflow)?;
+        storage::set_active_products(&env, active);
+
+        ProductRegistered {
+            product_id: config.id.clone(),
+            product: product.clone(),
+        }
+        .publish(&env);
+
+        Ok(product)
+    }
+
+    /// Configure the authorization contract address.
+    /// This can only be called once.
+    ///
+    /// # Arguments
+    /// * `auth_contract` - The address of the authorization contract
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if already initialized with different address
+    ///
+    /// # Errors
+    /// * `AlreadyInitialized` - If already initialized with a different address
+    pub fn configure_auth_contract(env: Env, auth_contract: Address) -> Result<(), Error> {
+        ValidationContract::validate_contract_address(&env, &auth_contract)?;
+        match get_auth_contract(&env) {
+            None => {
+                set_auth_contract(&env, &auth_contract);
+                Ok(())
+            }
+            Some(existing) if existing == auth_contract => Ok(()),
+            Some(_) => Err(Error::AlreadyInitialized),
+        }
+    }
+
+    /// Configure which contract is allowed to call `transfer_owner`.
+    ///
+    /// This is intentionally one-time set (or idempotent if set to the same
+    /// address) to avoid ownership transfers being callable by arbitrary
+    /// contracts.
+    pub fn configure_transfer_contract(env: Env, transfer_contract: Address) -> Result<(), Error> {
+        ValidationContract::validate_contract_address(&env, &transfer_contract)?;
+        match get_transfer_contract(&env) {
+            None => {
+                set_transfer_contract(&env, &transfer_contract);
+                Ok(())
+            }
+            Some(existing) if existing == transfer_contract => Ok(()),
+            Some(_) => Err(Error::AlreadyInitialized),
+        }
+    }
+
+    /// Update a product's `owner` field.
+    ///
+    /// This must only be called by the configured `ProductTransferContract`.
+    pub fn transfer_owner(
+        env: Env,
+        caller: Address,
+        product_id: String,
+        new_owner: Address,
+    ) -> Result<Product, Error> {
+        require_transfer_contract(&env, &caller)?;
+        ValidationContract::non_empty(&product_id)?;
+
+        let mut product = read_product(&env, &product_id)?;
+        if !product.active {
+            return Err(Error::ProductDeactivated);
+        }
+        ValidationContract::validate_distinct_addresses(&product.owner, &new_owner)?;
+        product.owner = new_owner;
+        write_product(&env, &product);
+
+        Ok(product)
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // PRODUCT LIFECYCLE — DEACTIVATION & REACTIVATION
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Deactivate a product.
+    ///
+    /// Only the product owner can deactivate. A reason must be provided.
+    /// Deactivation prevents new tracking events and decrements the active
+    /// product counter.
+    pub fn deactivate_product(
+        env: Env,
+        owner: Address,
+        product_id: String,
+        reason: String,
+    ) -> Result<(), Error> {
+        let mut product = read_product(&env, &product_id)?;
+        require_owner(&product, &owner)?;
+
+        if !product.active {
+            return Err(Error::ProductDeactivated);
+        }
+
+        ValidationContract::validate_deactivation_reason(&reason)?;
+
+        product.active = false;
+        let mut info = Vec::new(&env);
+        info.push_back(DeactInfo {
+            reason: reason.clone(),
+            deactivated_at: env.ledger().timestamp(),
+            deactivated_by: owner.clone(),
+        });
+        product.deactivation_info = info;
+
+        write_product(&env, &product);
+
+        // Remove product from search index when deactivated
+        deindex_product(&env, &product);
+
+        // Decrement active counter
+        let active = storage::get_active_products(&env).saturating_sub(1);
+        storage::set_active_products(&env, active);
+
+        ProductDeactivated {
+            product_id: product_id.clone(),
+            owner,
+            reason,
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+
+    /// Reactivate a previously deactivated product.
+    ///
+    /// Only the product owner can reactivate. Clears deactivation info
+    /// and increments the active product counter.
+    pub fn reactivate_product(env: Env, owner: Address, product_id: String) -> Result<(), Error> {
+        let mut product = read_product(&env, &product_id)?;
+        require_owner(&product, &owner)?;
+
+        if product.active {
+            return Err(Error::ProductAlreadyActive);
+        }
+
+        product.active = true;
+        product.deactivation_info = Vec::new(&env);
+
+        write_product(&env, &product);
+
+        // Re-index product when reactivated
+        index_product(&env, &product);
+
+        // Increment active counter
+        let active = storage::get_active_products(&env)
+            .checked_add(1)
+            .ok_or(Error::ArithmeticOverflow)?;
+        storage::set_active_products(&env, active);
+
+        ProductReactivated {
+            product_id: product_id.clone(),
+            owner,
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // PRODUCT QUERIES
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Get a product by its string ID.
+    ///
+    /// # Arguments
+    /// * `id` - The ID of the product to retrieve
+    ///
+    /// # Returns
+    /// * `Result<Product, Error>` - The product information
+    ///
+    /// # Errors
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_product(env: Env, id: String) -> Result<Product, Error> {
+        read_product(&env, &id)
+    }
+
+    /// Get global product statistics.
+    ///
+    /// # Returns
+    /// * `ProductStats` - Global statistics including total and active product counts
+    pub fn get_stats(env: Env) -> ProductStats {
+        ProductStats {
+            total_products: storage::get_total_products(&env),
+            active_products: storage::get_active_products(&env),
+        }
+    }
+
+    // ═══════════════════════════════════════════════════════════════════════
+    // PRODUCT SEARCH
+    // ═══════════════════════════════════════════════════════════════════════
+
+    /// Search products by name, origin, or category.
+    /// Returns matching product IDs with exact matching.
+    /// Results are limited for gas efficiency.
+    ///
+    /// # Arguments
+    /// * `query` - The search query string
+    /// * `limit` - Maximum number of results to return
+    ///
+    /// # Returns
+    /// * `Vec<String>` - A vector of matching product IDs
+    pub fn search_products(env: Env, query: String, limit: u32) -> Vec<String> {
+        let mut results = Vec::new(&env);
+
+        if limit == 0 {
+            return results;
+        }
+
+        // Search for exact match first (case sensitive)
+        let exact_matches = storage::get_search_index(&env, &query);
+        for i in 0..exact_matches.len() {
+            if results.len() >= limit {
+                return results;
+            }
+            let product_id = exact_matches.get(i).unwrap();
+            if !results.contains(&product_id) {
+                results.push_back(product_id.clone());
+            }
+        }
+
+        // If we need more results, we could implement partial matching here
+        // For now, this provides basic search functionality
+
+        results
+    }
+}
diff --git a/smart-contract/contracts/src/product_transfer.rs b/smart-contract/contracts/src/product_transfer.rs
new file mode 100644
index 00000000..f154984a
--- /dev/null
+++ b/smart-contract/contracts/src/product_transfer.rs
@@ -0,0 +1,773 @@
+use soroban_sdk::{contract, contractimpl, Address, Env, String, Symbol};
+
+use crate::error::Error;
+use crate::events::ProductTransferred;
+use crate::types::{BatchProgress, DataKey, GasEstimate, GasPolicy};
+use crate::{storage, validation_contract::ValidationContract};
+use crate::{AuthorizationContractClient, ProductRegistryContractClient};
+
+const MAX_BATCH_SIZE: u32 = 100;
+const RECOMMENDED_CHUNK_SIZE: u32 = 25;
+const BASE_COST_UNITS: u64 = 15;
+const PER_ITEM_COST_UNITS: u64 = 8;
+
+// ─── Storage helpers for ProductTransferContract ─────────────────────────────
+
+/// Get the authorization contract address.
+fn get_auth_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::AuthContract)
+}
+
+/// Set the authorization contract address.
+fn set_auth_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::AuthContract, address);
+}
+
+/// Get the main contract address.
+fn get_main_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::MainContract)
+}
+
+/// Set the main contract address.
+fn set_main_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::MainContract, address);
+}
+
+fn gas_policy() -> GasPolicy {
+    GasPolicy {
+        max_batch_size: MAX_BATCH_SIZE,
+        recommended_chunk_size: RECOMMENDED_CHUNK_SIZE,
+        base_cost_units: BASE_COST_UNITS,
+        per_item_cost_units: PER_ITEM_COST_UNITS,
+    }
+}
+
+fn estimate_batch(item_count: u32) -> GasEstimate {
+    let policy = gas_policy();
+    let chunk_count = if item_count == 0 {
+        0
+    } else {
+        item_count.div_ceil(policy.recommended_chunk_size)
+    };
+
+    let estimated_cost_units = policy
+        .per_item_cost_units
+        .checked_mul(item_count as u64)
+        .and_then(|x| x.checked_add(policy.base_cost_units))
+        .unwrap_or(u64::MAX);
+
+    GasEstimate {
+        item_count,
+        estimated_cost_units,
+        recommended_chunk_size: policy.recommended_chunk_size,
+        recommended_chunk_count: chunk_count,
+        fits_single_transaction: item_count <= policy.max_batch_size,
+    }
+}
+
+fn transfer_batch_chunk(
+    env: &Env,
+    owner: &Address,
+    product_ids: &soroban_sdk::Vec<String>,
+    new_owner: &Address,
+    cursor: u32,
+    chunk_size: u32,
+) -> Result<BatchProgress, Error> {
+    ValidationContract::validate_distinct_addresses(owner, new_owner)?;
+
+    if product_ids.is_empty() {
+        return Err(Error::EmptyBatch);
+    }
+
+    if product_ids.len() > MAX_BATCH_SIZE {
+        return Err(Error::BatchTooLarge);
+    }
+
+    if chunk_size == 0 {
+        return Err(Error::InvalidInput);
+    }
+
+    if chunk_size > MAX_BATCH_SIZE {
+        return Err(Error::BatchTooLarge);
+    }
+
+    let main_contract = get_main_contract(env).ok_or(Error::NotInitialized)?;
+    let auth_contract = get_auth_contract(env).ok_or(Error::NotInitialized)?;
+
+    let pr_client = ProductRegistryContractClient::new(env, &main_contract);
+    let auth_client = AuthorizationContractClient::new(env, &auth_contract);
+    let self_address = env.current_contract_address();
+
+    if cursor >= product_ids.len() {
+        return Ok(BatchProgress {
+            requested: product_ids.len(),
+            processed: 0,
+            succeeded: 0,
+            next_cursor: cursor,
+            complete: true,
+        });
+    }
+
+    let end = cursor
+        .checked_add(chunk_size)
+        .ok_or(Error::ArithmeticOverflow)?
+        .min(product_ids.len());
+    let mut transferred_count: u32 = 0;
+
+    let transfer_scope = Symbol::new(env, "batch_transfer");
+    storage::acquire_reentrancy_lock(env, &transfer_scope)?;
+
+    for i in cursor..end {
+        if let Some(product_id) = product_ids.get(i) {
+            let product = match pr_client.try_get_product(&product_id) {
+                Ok(Ok(p)) => p,
+                Ok(Err(_)) | Err(_) => continue,
+            };
+
+            if product.owner != *owner || !product.active {
+                continue;
+            }
+
+            auth_client.update_product_owner(owner, &product_id, new_owner);
+            pr_client.transfer_owner(&self_address, &product_id, new_owner);
+
+            ProductTransferred {
+                product_id,
+                from: owner.clone(),
+                to: new_owner.clone(),
+            }
+            .publish(env);
+
+            transferred_count = transferred_count
+                .checked_add(1)
+                .ok_or(Error::ArithmeticOverflow)?;
+        }
+    }
+
+    storage::release_reentrancy_lock(env, &transfer_scope);
+
+    Ok(BatchProgress {
+        requested: product_ids.len(),
+        processed: end - cursor,
+        succeeded: transferred_count,
+        next_cursor: end,
+        complete: end == product_ids.len(),
+    })
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+/// The Product Transfer contract manages product ownership transfers.
+#[contract]
+pub struct ProductTransferContract;
+
+#[contractimpl]
+impl ProductTransferContract {
+    /// Initialize the ProductTransferContract with required contract addresses.
+    ///
+    /// # Arguments
+    /// * `main_contract` - The address of the main ChainLogistics contract
+    /// * `auth_contract` - The address of the authorization contract
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if already initialized
+    ///
+    /// # Errors
+    /// * `AlreadyInitialized` - If the contract has already been initialized
+    pub fn pt_init(env: Env, main_contract: Address, auth_contract: Address) -> Result<(), Error> {
+        if get_auth_contract(&env).is_some() || get_main_contract(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+        ValidationContract::validate_contract_address(&env, &main_contract)?;
+        ValidationContract::validate_contract_address(&env, &auth_contract)?;
+        set_main_contract(&env, &main_contract);
+        set_auth_contract(&env, &auth_contract);
+
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+        let self_address = env.current_contract_address();
+        pr_client.configure_transfer_contract(&self_address);
+
+        Ok(())
+    }
+
+    /// Transfer ownership of a product from the current owner to a new owner.
+    /// Requires authentication from both the current owner and the new owner.
+    ///
+    /// # Arguments
+    /// * `owner` - The current owner of the product
+    /// * `product_id` - The ID of the product to transfer
+    /// * `new_owner` - The new owner of the product
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if transfer fails
+    ///
+    /// # Errors
+    /// * `NotInitialized` - If the contract is not initialized
+    /// * `ProductNotFound` - If the product does not exist
+    /// * `Unauthorized` - If owner is not the current owner
+    /// * `ProductDeactivated` - If the product is deactivated
+    pub fn transfer_product(
+        env: Env,
+        owner: Address,
+        product_id: String,
+        new_owner: Address,
+    ) -> Result<(), Error> {
+        // Require authentication from both parties
+        owner.require_auth();
+        new_owner.require_auth();
+        ValidationContract::validate_distinct_addresses(&owner, &new_owner)?;
+        ValidationContract::non_empty(&product_id)?;
+        ValidationContract::max_len(&product_id, ValidationContract::MAX_PRODUCT_ID_LEN)?;
+
+        // Get contract addresses
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let auth_contract = get_auth_contract(&env).ok_or(Error::NotInitialized)?;
+
+        // Create client to interact with ProductRegistryContract
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+
+        // Verify product exists and get current product info
+        let product = match pr_client.try_get_product(&product_id) {
+            Ok(Ok(p)) => p,
+            Ok(Err(_)) => return Err(Error::ProductNotFound),
+            Err(_) => return Err(Error::ProductNotFound),
+        };
+
+        // Verify current ownership
+        if product.owner != owner {
+            return Err(Error::Unauthorized);
+        }
+
+        if !product.active {
+            return Err(Error::ProductDeactivated);
+        }
+
+        // Update authorization mappings via AuthorizationContract
+        let auth_client = AuthorizationContractClient::new(&env, &auth_contract);
+
+        let transfer_scope = Symbol::new(&env, "transfer_product");
+        storage::acquire_reentrancy_lock(&env, &transfer_scope)?;
+        auth_client.update_product_owner(&owner, &product_id, &new_owner);
+
+        // Update registry product record ownership
+        let self_address = env.current_contract_address();
+        pr_client.transfer_owner(&self_address, &product_id, &new_owner);
+        storage::release_reentrancy_lock(&env, &transfer_scope);
+
+        ProductTransferred {
+            product_id,
+            from: owner,
+            to: new_owner,
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+
+    /// Get the current owner of a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    ///
+    /// # Returns
+    /// * `Result<Address, Error>` - The address of the current owner
+    ///
+    /// # Errors
+    /// * `NotInitialized` - If the contract is not initialized
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn get_product_owner(env: Env, product_id: String) -> Result<Address, Error> {
+        ValidationContract::non_empty(&product_id)?;
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+        let product = match pr_client.try_get_product(&product_id) {
+            Ok(Ok(p)) => p,
+            Ok(Err(_)) => return Err(Error::ProductNotFound),
+            Err(_) => return Err(Error::ProductNotFound),
+        };
+        Ok(product.owner)
+    }
+
+    /// Verify if an address is the owner of a specific product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `address` - The address to check
+    ///
+    /// # Returns
+    /// * `Result<bool, Error>` - True if the address is the owner, false otherwise
+    ///
+    /// # Errors
+    /// * `NotInitialized` - If the contract is not initialized
+    /// * `ProductNotFound` - If the product does not exist
+    pub fn is_product_owner(env: Env, product_id: String, address: Address) -> Result<bool, Error> {
+        ValidationContract::non_empty(&product_id)?;
+        let main_contract = get_main_contract(&env).ok_or(Error::NotInitialized)?;
+        let pr_client = ProductRegistryContractClient::new(&env, &main_contract);
+        let product = match pr_client.try_get_product(&product_id) {
+            Ok(Ok(p)) => p,
+            Ok(Err(_)) => return Err(Error::ProductNotFound),
+            Err(_) => return Err(Error::ProductNotFound),
+        };
+        Ok(product.owner == address)
+    }
+
+    /// Batch transfer multiple products from one owner to another.
+    /// All products must be owned by the same owner.
+    ///
+    /// # Arguments
+    /// * `owner` - The current owner of the products
+    /// * `product_ids` - A vector of product IDs to transfer
+    /// * `new_owner` - The new owner of the products
+    ///
+    /// # Returns
+    /// * `Result<u32, Error>` - The number of products successfully transferred
+    ///
+    /// # Errors
+    /// * `NotInitialized` - If the contract is not initialized
+    /// * `EmptyBatch` - If the product_ids vector is empty or exceeds limit (100)
+    pub fn batch_transfer_products(
+        env: Env,
+        owner: Address,
+        product_ids: soroban_sdk::Vec<String>,
+        new_owner: Address,
+    ) -> Result<u32, Error> {
+        // Require authentication from both parties
+        owner.require_auth();
+        new_owner.require_auth();
+
+        let progress =
+            transfer_batch_chunk(&env, &owner, &product_ids, &new_owner, 0, product_ids.len())?;
+
+        Ok(progress.succeeded)
+    }
+    pub fn estimate_batch_transfer(_env: Env, item_count: u32) -> GasEstimate {
+        estimate_batch(item_count)
+    }
+
+    pub fn get_batch_transfer_gas_policy(_env: Env) -> GasPolicy {
+        gas_policy()
+    }
+
+    pub fn batch_transfer_products_chunk(
+        env: Env,
+        owner: Address,
+        product_ids: soroban_sdk::Vec<String>,
+        new_owner: Address,
+        cursor: u32,
+        chunk_size: u32,
+    ) -> Result<BatchProgress, Error> {
+        owner.require_auth();
+        new_owner.require_auth();
+        transfer_batch_chunk(&env, &owner, &product_ids, &new_owner, cursor, chunk_size)
+    }
+}
+
+#[cfg(test)]
+mod test_product_transfer {
+    use super::*;
+    use crate::{
+        AuthorizationContract, AuthorizationContractClient, ProductConfig, ProductRegistryContract,
+        ProductRegistryContractClient,
+    };
+    use soroban_sdk::{testutils::Address as _, Address, Env, Map, String, Vec};
+
+    fn setup(
+        env: &Env,
+    ) -> (
+        ProductRegistryContractClient<'_>,
+        AuthorizationContractClient<'_>,
+        Address,
+        ProductTransferContractClient<'_>,
+        Address,
+    ) {
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+
+        let pr_client = ProductRegistryContractClient::new(env, &pr_id);
+        let auth_client = AuthorizationContractClient::new(env, &auth_id);
+        let transfer_client = ProductTransferContractClient::new(env, &transfer_id);
+
+        auth_client.configure_initializer(&pr_id);
+        pr_client.configure_auth_contract(&auth_id);
+
+        let admin = Address::generate(env);
+        // Initialize ProductTransferContract with ProductRegistryContract and AuthorizationContract
+        transfer_client.pt_init(&pr_id, &auth_id);
+
+        (pr_client, auth_client, admin, transfer_client, pr_id)
+    }
+
+    fn register_test_product(
+        env: &Env,
+        client: &ProductRegistryContractClient,
+        owner: &Address,
+        id: &str,
+    ) -> String {
+        let id = String::from_str(env, id);
+        client.register_product(
+            owner,
+            &ProductConfig {
+                id: id.clone(),
+                name: String::from_str(env, "Test Product"),
+                description: String::from_str(env, "Description"),
+                origin_location: String::from_str(env, "Origin"),
+                category: String::from_str(env, "Category"),
+                tags: Vec::new(env),
+                certifications: Vec::new(env),
+                media_hashes: Vec::new(env),
+                custom: Map::new(env),
+            },
+        );
+        id
+    }
+
+    #[test]
+    fn test_transfer_product_ownership() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+        let id = register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        // Verify initial owner
+        let p = pr_client.get_product(&id);
+        assert_eq!(p.owner, owner);
+
+        // Transfer ownership
+        transfer_client.transfer_product(&owner, &id, &new_owner);
+
+        // Verify new owner in registry
+        let p2 = pr_client.get_product(&id);
+        assert_eq!(p2.owner, new_owner);
+
+        // Verify new owner is authorized in authorization contract
+        let ok = _auth_client.is_authorized(&id, &new_owner);
+        assert!(ok);
+    }
+
+    #[test]
+    fn test_only_owner_can_transfer() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let attacker = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+        let id = register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        // Non-owner attempt should fail
+        let res = transfer_client.try_transfer_product(&attacker, &id, &new_owner);
+        assert!(res.is_err());
+    }
+
+    #[test]
+    fn test_new_owner_authentication_required() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+        let id = register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        // Both parties authenticated via mock_all_auths, transfer should succeed
+        transfer_client.transfer_product(&owner, &id, &new_owner);
+
+        // Verify transfer succeeded by checking product owner
+        let result_owner = transfer_client.get_product_owner(&id);
+        assert_eq!(result_owner, new_owner);
+    }
+
+    #[test]
+    fn test_transfer_nonexistent_product_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+        let transfer_client = ProductTransferContractClient::new(&env, &transfer_id);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+
+        // Initialize the transfer contract
+        transfer_client.pt_init(&pr_id, &auth_id);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+        let fake_id = String::from_str(&env, "FAKE-001");
+
+        let res = transfer_client.try_transfer_product(&owner, &fake_id, &new_owner);
+        assert!(res.is_err());
+    }
+
+    #[test]
+    fn test_is_product_owner() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let non_owner = Address::generate(&env);
+        let id = register_test_product(&env, &pr_client, &owner, "PROD1");
+
+        assert!(transfer_client.is_product_owner(&id, &owner));
+        assert!(!transfer_client.is_product_owner(&id, &non_owner));
+    }
+
+    #[test]
+    fn test_batch_transfer_products() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+
+        // Register multiple products
+        let id1 = register_test_product(&env, &pr_client, &owner, "PROD1");
+        let id2 = register_test_product(&env, &pr_client, &owner, "PROD2");
+
+        // Batch transfer
+        let mut product_ids = Vec::new(&env);
+        product_ids.push_back(id1.clone());
+        product_ids.push_back(id2.clone());
+
+        let count = transfer_client.batch_transfer_products(&owner, &product_ids, &new_owner);
+        assert_eq!(count, 2);
+    }
+
+    #[test]
+    fn test_batch_transfer_empty_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+        let transfer_client = ProductTransferContractClient::new(&env, &transfer_id);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+        transfer_client.pt_init(&pr_id, &auth_id);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+        let product_ids = Vec::new(&env);
+
+        let res = transfer_client.try_batch_transfer_products(&owner, &product_ids, &new_owner);
+        assert_eq!(res, Err(Ok(Error::EmptyBatch)));
+    }
+
+    #[test]
+    fn test_get_product_owner_not_found() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+        let transfer_client = ProductTransferContractClient::new(&env, &transfer_id);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+
+        // Initialize the transfer contract
+        transfer_client.pt_init(&pr_id, &auth_id);
+
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+
+        let res = transfer_client.try_get_product_owner(&fake_id);
+        assert!(res.is_err());
+    }
+
+    #[test]
+    fn test_batch_transfer_boundary_conditions() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+
+        // Test empty batch (should fail)
+        let product_ids = Vec::new(&env);
+        let res = transfer_client.try_batch_transfer_products(&owner, &product_ids, &new_owner);
+        assert_eq!(res, Err(Ok(Error::EmptyBatch)));
+
+        // Test batch size limit (should fail)
+        let mut large_batch = Vec::new(&env);
+        for i in 0..101 {
+            let id = String::from_str(&env, "PROD");
+            large_batch.push_back(id);
+        }
+        let res = transfer_client.try_batch_transfer_products(&owner, &large_batch, &new_owner);
+        assert_eq!(res, Err(Ok(Error::BatchTooLarge)));
+
+        // Test normal batch size (should work if products exist)
+        let mut normal_batch = Vec::new(&env);
+        for i in 0..5 {
+            let id = String::from_str(&env, "PROD");
+            normal_batch.push_back(id);
+        }
+        // This will return 0 because products don't exist, but won't fail due to batch size
+        let count = transfer_client.batch_transfer_products(&owner, &normal_batch, &new_owner);
+        assert_eq!(count, 0);
+    }
+
+    #[test]
+    fn test_batch_transfer_chunk_progress_and_policy() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, _auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+
+        let mut product_ids = Vec::new(&env);
+        for id_str in ["PROD0", "PROD1", "PROD2", "PROD3", "PROD4"] {
+            let id = register_test_product(&env, &pr_client, &owner, id_str);
+            product_ids.push_back(id);
+        }
+
+        let policy = transfer_client.get_batch_transfer_gas_policy();
+        assert_eq!(policy.max_batch_size, MAX_BATCH_SIZE);
+        assert_eq!(policy.recommended_chunk_size, RECOMMENDED_CHUNK_SIZE);
+
+        let estimate = transfer_client.estimate_batch_transfer(&60);
+        assert_eq!(estimate.recommended_chunk_count, 3);
+        assert!(estimate.fits_single_transaction);
+
+        let first =
+            transfer_client.batch_transfer_products_chunk(&owner, &product_ids, &new_owner, &0, &2);
+        assert_eq!(first.processed, 2);
+        assert_eq!(first.succeeded, 2);
+        assert_eq!(first.next_cursor, 2);
+        assert!(!first.complete);
+
+        let second =
+            transfer_client.batch_transfer_products_chunk(&owner, &product_ids, &new_owner, &2, &2);
+        assert_eq!(second.processed, 2);
+        assert_eq!(second.succeeded, 2);
+        assert_eq!(second.next_cursor, 4);
+        assert!(!second.complete);
+
+        let third =
+            transfer_client.batch_transfer_products_chunk(&owner, &product_ids, &new_owner, &4, &2);
+        assert_eq!(third.processed, 1);
+        assert_eq!(third.succeeded, 1);
+        assert!(third.complete);
+    }
+
+    #[test]
+    fn test_batch_transfer_estimates_are_monotonic() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+        let transfer_client = ProductTransferContractClient::new(&env, &transfer_id);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+        transfer_client.pt_init(&pr_id, &auth_id);
+
+        let mut last_cost = 0u64;
+        for item_count in 1..=MAX_BATCH_SIZE {
+            let estimate = transfer_client.estimate_batch_transfer(&item_count);
+            assert!(estimate.estimated_cost_units > last_cost);
+            assert!(estimate.recommended_chunk_count >= 1);
+            last_cost = estimate.estimated_cost_units;
+        }
+    }
+
+    #[test]
+    fn test_batch_transfer_with_nonexistent_products() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+
+        // Register some products
+        let id1 = register_test_product(&env, &pr_client, &owner, "PROD1");
+        let id2 = register_test_product(&env, &pr_client, &owner, "PROD2");
+
+        // Create batch with mix of existing and non-existing products
+        let mut mixed_batch = Vec::new(&env);
+        mixed_batch.push_back(id1); // exists
+        mixed_batch.push_back(String::from_str(&env, "NONEXISTENT")); // doesn't exist
+        mixed_batch.push_back(id2); // exists
+        mixed_batch.push_back(String::from_str(&env, "ALSO_NONEXISTENT")); // doesn't exist
+
+        let count = transfer_client.batch_transfer_products(&owner, &mixed_batch, &new_owner);
+        assert_eq!(count, 2); // Should only transfer existing products
+    }
+
+    #[test]
+    fn test_batch_transfer_with_unowned_products() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (pr_client, auth_client, _admin, transfer_client, _pr_id) = setup(&env);
+
+        let owner = Address::generate(&env);
+        let other_owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+
+        // Register products by different owners
+        let id1 = register_test_product(&env, &pr_client, &owner, "PROD1");
+        let id2 = register_test_product(&env, &pr_client, &other_owner, "PROD2");
+
+        // Create batch with mix of owned and unowned products
+        let mut mixed_batch = Vec::new(&env);
+        mixed_batch.push_back(id1); // owned by caller
+        mixed_batch.push_back(id2); // owned by other person
+
+        let count = transfer_client.batch_transfer_products(&owner, &mixed_batch, &new_owner);
+        assert_eq!(count, 1); // Should only transfer owned products
+    }
+
+    #[test]
+    fn test_init_already_initialized_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+        let transfer_client = ProductTransferContractClient::new(&env, &transfer_id);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+
+        transfer_client.pt_init(&pr_id, &auth_id);
+
+        let res = transfer_client.try_pt_init(&pr_id, &auth_id);
+        assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_transfer_before_init_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let transfer_id = env.register_contract(None, ProductTransferContract);
+        let transfer_client = ProductTransferContractClient::new(&env, &transfer_id);
+
+        let owner = Address::generate(&env);
+        let new_owner = Address::generate(&env);
+        let fake_id = String::from_str(&env, "FAKE-001");
+
+        let res = transfer_client.try_transfer_product(&owner, &fake_id, &new_owner);
+        assert_eq!(res, Err(Ok(Error::NotInitialized)));
+    }
+}
diff --git a/smart-contract/contracts/src/quality_control.rs b/smart-contract/contracts/src/quality_control.rs
new file mode 100644
index 00000000..eaa768bd
--- /dev/null
+++ b/smart-contract/contracts/src/quality_control.rs
@@ -0,0 +1,508 @@
+#![allow(unexpected_cfgs)]
+#![allow(dead_code)]
+#![allow(clippy::too_many_arguments)]
+#![allow(deprecated)]
+
+use soroban_sdk::{contract, contractimpl, Address, Env, Map, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::storage;
+use crate::types::{QualityCertification, QualityParameter, QualityReading};
+
+/// Quality control contract for managing IoT sensor data,
+/// quality certifications, and compliance tracking.
+#[contract]
+pub struct QualityControlContract;
+
+#[contractimpl]
+impl QualityControlContract {
+    /// Initialize the quality control module for a product
+    pub fn init_quality_control(env: Env, admin: Address, product_id: String) -> Result<(), Error> {
+        admin.require_auth();
+
+        // Verify product exists
+        if storage::get_product(&env, &product_id).is_none() {
+            return Err(Error::ProductNotFound);
+        }
+
+        // Initialize quality control storage
+        storage::set_quality_control_enabled(&env, &product_id, true);
+        storage::set_quality_control_admin(&env, &product_id, &admin);
+
+        // Emit initialization event
+        env.events().publish(
+            (
+                Symbol::new(&env, "quality_control_initialized"),
+                product_id.clone(),
+            ),
+            admin,
+        );
+
+        Ok(())
+    }
+
+    /// Add a quality certification to a product (ISO, HACCP, etc.)
+    pub fn add_quality_certification(
+        env: Env,
+        caller: Address,
+        product_id: String,
+        certification_type: String,
+        issuer: String,
+        certificate_id: String,
+        valid_from: u64,
+        valid_until: u64,
+        metadata: String,
+    ) -> Result<QualityCertification, Error> {
+        caller.require_auth();
+
+        // Verify caller is authorized
+        Self::require_quality_control_auth(&env, &product_id, &caller)?;
+
+        // Create certification record
+        let certification = QualityCertification {
+            certification_id: certificate_id.clone(),
+            certification_type: certification_type.clone(),
+            issuer: issuer.clone(),
+            certificate_id: certificate_id.clone(),
+            valid_from,
+            valid_until,
+            status: String::from_str(&env, "active"),
+            metadata: metadata.clone(),
+        };
+
+        // Store certification
+        storage::add_quality_certification(&env, &product_id, &certification);
+
+        // Emit event
+        env.events().publish(
+            (Symbol::new(&env, "certification_added"), product_id.clone()),
+            (certification_type, issuer, certificate_id),
+        );
+
+        Ok(certification)
+    }
+
+    /// Record IoT sensor reading for quality monitoring
+    pub fn record_quality_reading(
+        env: Env,
+        caller: Address,
+        product_id: String,
+        sensor_id: String,
+        parameter: String,
+        value: i128,
+        unit: String,
+        location: String,
+        threshold_min: Option<i128>,
+        threshold_max: Option<i128>,
+    ) -> Result<QualityReading, Error> {
+        caller.require_auth();
+
+        // Verify caller is authorized sensor or admin
+        if !Self::is_authorized_sensor(&env, &product_id, &caller)
+            && !Self::is_quality_control_admin(&env, &product_id, &caller)
+        {
+            return Err(Error::Unauthorized);
+        }
+
+        let timestamp = env.ledger().timestamp();
+
+        // Determine status based on thresholds
+        let status = Self::determine_reading_status(&env, value, threshold_min, threshold_max);
+
+        // Create reading record
+        let reading = QualityReading {
+            reading_id: Self::generate_reading_id(&env, &product_id, &sensor_id, timestamp),
+            product_id: product_id.clone(),
+            sensor_id: sensor_id.clone(),
+            parameter: parameter.clone(),
+            value,
+            unit: unit.clone(),
+            timestamp,
+            location: location.clone(),
+            status: status.clone(),
+            threshold_min,
+            threshold_max,
+        };
+
+        // Store reading
+        storage::add_quality_reading(&env, &product_id, &reading);
+
+        // Update parameter statistics
+        Self::update_parameter_stats(&env, &product_id, &parameter, value);
+
+        // Emit event
+        env.events().publish(
+            (
+                Symbol::new(&env, "quality_reading_recorded"),
+                product_id.clone(),
+            ),
+            (sensor_id, parameter.clone(), value, unit, status.clone()),
+        );
+
+        // Trigger alert if out of range
+        if status == String::from_str(&env, "critical") {
+            env.events().publish(
+                (
+                    Symbol::new(&env, "quality_alert_triggered"),
+                    product_id.clone(),
+                ),
+                (
+                    parameter,
+                    value,
+                    String::from_str(&env, "threshold_exceeded"),
+                ),
+            );
+        }
+
+        Ok(reading)
+    }
+
+    /// Get quality readings for a product with optional filtering
+    pub fn get_quality_readings(
+        env: Env,
+        product_id: String,
+        parameter: Option<String>,
+        from_timestamp: Option<u64>,
+        to_timestamp: Option<u64>,
+        limit: u32,
+    ) -> Result<Vec<QualityReading>, Error> {
+        if limit > 100 {
+            return Err(Error::InvalidLimit);
+        }
+
+        let readings = storage::get_quality_readings(&env, &product_id);
+        let mut filtered = Vec::new(&env);
+
+        for reading in readings.iter() {
+            if let Some(ref param) = parameter {
+                if reading.parameter != *param {
+                    continue;
+                }
+            }
+
+            if let Some(from) = from_timestamp {
+                if reading.timestamp < from {
+                    continue;
+                }
+            }
+
+            if let Some(to) = to_timestamp {
+                if reading.timestamp > to {
+                    continue;
+                }
+            }
+
+            filtered.push_back(reading);
+
+            if filtered.len() >= limit {
+                break;
+            }
+        }
+
+        Ok(filtered)
+    }
+
+    /// Get active quality certifications for a product
+    pub fn get_quality_certifications(
+        env: Env,
+        product_id: String,
+    ) -> Result<Vec<QualityCertification>, Error> {
+        let certifications = storage::get_quality_certifications(&env, &product_id);
+        let now = env.ledger().timestamp();
+        let mut active = Vec::new(&env);
+
+        for cert in certifications.iter() {
+            if cert.valid_from <= now && cert.valid_until >= now {
+                active.push_back(cert);
+            }
+        }
+
+        Ok(active)
+    }
+
+    /// Define quality parameters to monitor for a product
+    pub fn define_quality_parameters(
+        env: Env,
+        caller: Address,
+        product_id: String,
+        parameters: Vec<QualityParameter>,
+    ) -> Result<(), Error> {
+        caller.require_auth();
+
+        Self::require_quality_control_auth(&env, &product_id, &caller)?;
+
+        storage::set_quality_parameters(&env, &product_id, &parameters);
+
+        env.events().publish(
+            (
+                Symbol::new(&env, "quality_parameters_defined"),
+                product_id.clone(),
+            ),
+            parameters.len(),
+        );
+
+        Ok(())
+    }
+
+    /// Get defined quality parameters for a product
+    pub fn get_quality_parameters(
+        env: Env,
+        product_id: String,
+    ) -> Result<Vec<QualityParameter>, Error> {
+        Ok(storage::get_quality_parameters(&env, &product_id))
+    }
+
+    /// Authorize a sensor to submit readings for a product
+    pub fn authorize_sensor(
+        env: Env,
+        admin: Address,
+        product_id: String,
+        sensor_address: Address,
+        sensor_id: String,
+        sensor_type: String,
+    ) -> Result<(), Error> {
+        admin.require_auth();
+
+        if !Self::is_quality_control_admin(&env, &product_id, &admin) {
+            return Err(Error::Unauthorized);
+        }
+
+        storage::authorize_sensor(&env, &product_id, &sensor_address, &sensor_id, &sensor_type);
+
+        env.events().publish(
+            (Symbol::new(&env, "sensor_authorized"), product_id.clone()),
+            (sensor_address, sensor_id, sensor_type),
+        );
+
+        Ok(())
+    }
+
+    /// Revoke sensor authorization
+    pub fn revoke_sensor_authorization(
+        env: Env,
+        admin: Address,
+        product_id: String,
+        sensor_address: Address,
+    ) -> Result<(), Error> {
+        admin.require_auth();
+
+        if !Self::is_quality_control_admin(&env, &product_id, &admin) {
+            return Err(Error::Unauthorized);
+        }
+
+        storage::revoke_sensor_authorization(&env, &product_id, &sensor_address);
+
+        env.events().publish(
+            (Symbol::new(&env, "sensor_revoked"), product_id.clone()),
+            sensor_address,
+        );
+
+        Ok(())
+    }
+
+    /// Get quality summary statistics for a product
+    pub fn get_quality_summary(env: Env, product_id: String) -> Result<Map<String, String>, Error> {
+        let mut summary = Map::new(&env);
+        let readings = storage::get_quality_readings(&env, &product_id);
+
+        let total_readings = readings.len();
+        let mut critical_count = 0u32;
+        let mut warning_count = 0u32;
+        let mut normal_count = 0u32;
+
+        for reading in readings.iter() {
+            if reading.status == String::from_str(&env, "critical") {
+                critical_count += 1;
+            } else if reading.status == String::from_str(&env, "warning") {
+                warning_count += 1;
+            } else {
+                normal_count += 1;
+            }
+        }
+
+        summary.set(
+            String::from_str(&env, "total_readings"),
+            format_count(&env, total_readings),
+        );
+        summary.set(
+            String::from_str(&env, "critical_count"),
+            format_count(&env, critical_count),
+        );
+        summary.set(
+            String::from_str(&env, "warning_count"),
+            format_count(&env, warning_count),
+        );
+        summary.set(
+            String::from_str(&env, "normal_count"),
+            format_count(&env, normal_count),
+        );
+
+        let certifications = storage::get_quality_certifications(&env, &product_id);
+        summary.set(
+            String::from_str(&env, "certification_count"),
+            format_count(&env, certifications.len()),
+        );
+
+        Ok(summary)
+    }
+
+    /// Internal helper: Check if caller is quality control admin
+    fn is_quality_control_admin(env: &Env, product_id: &String, caller: &Address) -> bool {
+        if let Some(admin) = storage::get_quality_control_admin(env, product_id) {
+            &admin == caller
+        } else {
+            false
+        }
+    }
+
+    /// Internal helper: Check if address is authorized sensor
+    fn is_authorized_sensor(env: &Env, product_id: &String, address: &Address) -> bool {
+        storage::is_authorized_sensor(env, product_id, address)
+    }
+
+    /// Internal helper: Require quality control authorization
+    fn require_quality_control_auth(
+        env: &Env,
+        product_id: &String,
+        caller: &Address,
+    ) -> Result<(), Error> {
+        if Self::is_quality_control_admin(env, product_id, caller) {
+            return Ok(());
+        }
+
+        // Also allow product owner
+        if let Some(product) = storage::get_product(env, product_id) {
+            if &product.owner == caller {
+                return Ok(());
+            }
+        }
+
+        Err(Error::Unauthorized)
+    }
+
+    /// Internal helper: Generate unique reading ID
+    fn generate_reading_id(
+        env: &Env,
+        product_id: &String,
+        sensor_id: &String,
+        timestamp: u64,
+    ) -> String {
+        let ts_str = Self::u64_to_string(env, timestamp);
+        let pid_len = product_id.len() as usize;
+        let sid_len = sensor_id.len() as usize;
+        let ts_len = ts_str.len() as usize;
+        // product_id + ":" + sensor_id + ":" + timestamp digits
+        let total = pid_len + 1 + sid_len + 1 + ts_len;
+        let mut buf = [0u8; 512];
+        let mut pos = 0usize;
+        product_id.copy_into_slice(&mut buf[pos..pos + pid_len]);
+        pos += pid_len;
+        buf[pos] = b':';
+        pos += 1;
+        sensor_id.copy_into_slice(&mut buf[pos..pos + sid_len]);
+        pos += sid_len;
+        buf[pos] = b':';
+        pos += 1;
+        ts_str.copy_into_slice(&mut buf[pos..pos + ts_len]);
+        pos += ts_len;
+        let _ = total; // pos == total
+        String::from_bytes(env, &buf[..pos])
+    }
+
+    /// Convert u64 to String
+    fn u64_to_string(env: &Env, n: u64) -> String {
+        if n == 0 {
+            return String::from_str(env, "0");
+        }
+        let mut buf = [0u8; 20];
+        let mut pos = 20usize;
+        let mut num = n;
+        while num > 0 {
+            pos -= 1;
+            buf[pos] = b'0' + (num % 10) as u8;
+            num /= 10;
+        }
+        String::from_bytes(env, &buf[pos..])
+    }
+
+    /// Internal helper: Determine reading status based on thresholds
+    fn determine_reading_status(
+        env: &Env,
+        value: i128,
+        threshold_min: Option<i128>,
+        threshold_max: Option<i128>,
+    ) -> String {
+        let mut is_warning = false;
+        let mut is_critical = false;
+
+        if let Some(min) = threshold_min {
+            if value < min {
+                // Check if critically low (20% below threshold)
+                if value < min - (min / 5) {
+                    is_critical = true;
+                } else {
+                    is_warning = true;
+                }
+            }
+        }
+
+        if let Some(max) = threshold_max {
+            if value > max {
+                // Check if critically high (20% above threshold)
+                if value > max + (max / 5) {
+                    is_critical = true;
+                } else {
+                    is_warning = true;
+                }
+            }
+        }
+
+        if is_critical {
+            String::from_str(env, "critical")
+        } else if is_warning {
+            String::from_str(env, "warning")
+        } else {
+            String::from_str(env, "normal")
+        }
+    }
+
+    /// Internal helper: Update parameter statistics
+    fn update_parameter_stats(env: &Env, product_id: &String, parameter: &String, value: i128) {
+        let mut stats = storage::get_parameter_stats(env, product_id, parameter);
+
+        stats.count += 1;
+        stats.sum += value;
+
+        if stats.count == 1 || value < stats.min {
+            stats.min = value;
+        }
+
+        if stats.count == 1 || value > stats.max {
+            stats.max = value;
+        }
+
+        stats.avg = stats.sum / stats.count as i128;
+        stats.last_reading = value;
+        stats.last_timestamp = env.ledger().timestamp();
+
+        storage::set_parameter_stats(env, product_id, parameter, &stats);
+    }
+}
+
+/// Format a count as a string
+fn format_count(env: &Env, count: u32) -> String {
+    if count == 0 {
+        return String::from_str(env, "0");
+    }
+    let mut buf = [0u8; 10];
+    let mut pos = 10usize;
+    let mut n = count;
+    while n > 0 {
+        pos -= 1;
+        buf[pos] = b'0' + (n % 10) as u8;
+        n /= 10;
+    }
+    String::from_bytes(env, &buf[pos..])
+}
+
+// Quality control module for IoT sensor integration and quality certification tracking
diff --git a/smart-contract/contracts/src/stats.rs b/smart-contract/contracts/src/stats.rs
new file mode 100644
index 00000000..9c0cb3d3
--- /dev/null
+++ b/smart-contract/contracts/src/stats.rs
@@ -0,0 +1,443 @@
+use soroban_sdk::{contract, contractimpl, contracttype, Address, Env, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::types::{DataKey, ProductStats};
+use crate::{ProductRegistryContractClient, TrackingContractClient};
+
+#[contracttype]
+#[derive(Clone)]
+enum StatsDataKey {
+    RegistryContract,
+    TrackingContract,
+}
+
+// ─── Storage helpers for StatsContract ───────────────────────────────────────
+
+fn get_registry_contract(env: &Env) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&StatsDataKey::RegistryContract)
+}
+
+fn set_registry_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&StatsDataKey::RegistryContract, address);
+}
+
+fn get_tracking_contract(env: &Env) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&StatsDataKey::TrackingContract)
+}
+
+fn set_tracking_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&StatsDataKey::TrackingContract, address);
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+#[contract]
+pub struct StatsContract;
+
+#[contractimpl]
+impl StatsContract {
+    /// Initialize the StatsContract with the main contract address.
+    pub fn init(
+        env: Env,
+        registry_contract: Address,
+        tracking_contract: Address,
+    ) -> Result<(), Error> {
+        if get_registry_contract(&env).is_some() || get_tracking_contract(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+        set_registry_contract(&env, &registry_contract);
+        set_tracking_contract(&env, &tracking_contract);
+        Ok(())
+    }
+
+    /// Get global product statistics.
+    /// Returns total and active product counts.
+    pub fn stats_get_stats(env: Env) -> Result<ProductStats, Error> {
+        let registry_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+        let registry_client = ProductRegistryContractClient::new(&env, &registry_contract);
+        Ok(registry_client.get_stats())
+    }
+
+    /// Get the total number of products registered.
+    pub fn get_total_products(env: Env) -> Result<u64, Error> {
+        let registry_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+        let registry_client = ProductRegistryContractClient::new(&env, &registry_contract);
+
+        let stats = registry_client.get_stats();
+        Ok(stats.total_products)
+    }
+
+    /// Get the number of active products.
+    pub fn get_active_products(env: Env) -> Result<u64, Error> {
+        let registry_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+        let registry_client = ProductRegistryContractClient::new(&env, &registry_contract);
+
+        let stats = registry_client.get_stats();
+        Ok(stats.active_products)
+    }
+
+    /// Get the number of inactive products.
+    pub fn get_inactive_products(env: Env) -> Result<u64, Error> {
+        let registry_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+        let registry_client = ProductRegistryContractClient::new(&env, &registry_contract);
+
+        let stats = registry_client.get_stats();
+        let total = stats.total_products;
+        let active = stats.active_products;
+        Ok(total.saturating_sub(active))
+    }
+
+    /// Get the total number of tracking events across all products.
+    pub fn get_total_events(env: Env) -> Result<u64, Error> {
+        let _ = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let last_event_id: u64 = env
+            .storage()
+            .persistent()
+            .get(&DataKey::EventSeq)
+            .unwrap_or(0);
+        Ok(last_event_id)
+    }
+
+    /// Get product-specific statistics.
+    /// Returns (event_count, is_active) for a given product.
+    pub fn get_product_stats(env: Env, product_id: String) -> Result<(u64, bool), Error> {
+        let registry_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_contract = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+
+        let registry_client = ProductRegistryContractClient::new(&env, &registry_contract);
+        let tracking_client = TrackingContractClient::new(&env, &tracking_contract);
+
+        let is_active = match registry_client.try_get_product(&product_id) {
+            Ok(Ok(product)) => product.active,
+            _ => return Err(Error::ProductNotFound),
+        };
+
+        let event_count = tracking_client.tracking_get_event_count(&product_id);
+
+        Ok((event_count, is_active))
+    }
+
+    /// Get the average number of events per product.
+    pub fn get_average_events_per_product(env: Env) -> Result<u64, Error> {
+        let _main_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+
+        let total_products = Self::get_total_products(env.clone())?;
+        if total_products == 0 {
+            return Ok(0);
+        }
+
+        let total_events = Self::get_total_events(env)?;
+        Ok(total_events / total_products)
+    }
+
+    /// Get event type distribution for a product.
+    /// Returns a Vec of (event_type, count) tuples.
+    pub fn get_event_type_distribution(
+        env: Env,
+        product_id: String,
+    ) -> Result<Vec<(Symbol, u64)>, Error> {
+        let registry_contract = get_registry_contract(&env).ok_or(Error::NotInitialized)?;
+        let tracking_contract = get_tracking_contract(&env).ok_or(Error::NotInitialized)?;
+        let registry_client = ProductRegistryContractClient::new(&env, &registry_contract);
+        let tracking_client = TrackingContractClient::new(&env, &tracking_contract);
+
+        match registry_client.try_get_product(&product_id) {
+            Ok(Ok(_)) => {}
+            _ => return Err(Error::ProductNotFound),
+        };
+
+        // Count events by type
+        let mut type_counts = Vec::new(&env);
+
+        // Common event types to check
+        let event_types = [
+            Symbol::new(&env, "created"),
+            Symbol::new(&env, "shipped"),
+            Symbol::new(&env, "received"),
+            Symbol::new(&env, "transferred"),
+            Symbol::new(&env, "updated"),
+        ];
+
+        for event_type in event_types.iter() {
+            let count = tracking_client.tracking_get_event_count_by_type(&product_id, event_type);
+            if count > 0 {
+                type_counts.push_back((event_type.clone(), count));
+            }
+        }
+
+        Ok(type_counts)
+    }
+}
+
+#[cfg(test)]
+mod test_stats {
+    use super::*;
+    use crate::{
+        AuthorizationContract, AuthorizationContractClient, ProductConfig, ProductRegistryContract,
+        ProductRegistryContractClient, TrackingContract, TrackingContractClient,
+    };
+    use soroban_sdk::{testutils::Address as _, Address, Env, Map};
+
+    fn setup(
+        env: &Env,
+    ) -> (
+        ProductRegistryContractClient<'_>,
+        TrackingContractClient<'_>,
+        super::StatsContractClient<'_>,
+    ) {
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let registry_id = env.register_contract(None, ProductRegistryContract);
+        let tracking_id = env.register_contract(None, TrackingContract);
+        let stats_id = env.register_contract(None, super::StatsContract);
+
+        let registry_client = ProductRegistryContractClient::new(env, &registry_id);
+        let tracking_client = TrackingContractClient::new(env, &tracking_id);
+        let stats_client = super::StatsContractClient::new(env, &stats_id);
+
+        let auth_client = AuthorizationContractClient::new(env, &auth_id);
+        auth_client.configure_initializer(&registry_id);
+        registry_client.configure_auth_contract(&auth_id);
+
+        tracking_client.init(&registry_id);
+        stats_client.init(&registry_id, &tracking_id);
+
+        (registry_client, tracking_client, stats_client)
+    }
+
+    fn register_test_product(
+        env: &Env,
+        client: &ProductRegistryContractClient,
+        owner: &Address,
+        id: &str,
+    ) -> String {
+        let product_id = String::from_str(env, id);
+        client.register_product(
+            owner,
+            &ProductConfig {
+                id: product_id.clone(),
+                name: String::from_str(env, "Test Product"),
+                description: String::from_str(env, "Description"),
+                origin_location: String::from_str(env, "Origin"),
+                category: String::from_str(env, "Category"),
+                tags: Vec::new(env),
+                certifications: Vec::new(env),
+                media_hashes: Vec::new(env),
+                custom: Map::new(env),
+            },
+        );
+        product_id
+    }
+
+    #[test]
+    fn test_get_stats() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+
+        // Initial stats
+        let stats = stats_client.stats_get_stats();
+        assert_eq!(stats.total_products, 0);
+        assert_eq!(stats.active_products, 0);
+
+        // Register products
+        let owner = Address::generate(&env);
+        register_test_product(&env, &registry_client, &owner, "PROD1");
+        register_test_product(&env, &registry_client, &owner, "PROD2");
+
+        // Updated stats
+        let stats = stats_client.stats_get_stats();
+        assert_eq!(stats.total_products, 2);
+        assert_eq!(stats.active_products, 2);
+    }
+
+    #[test]
+    fn test_get_total_products() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+
+        // Initial count
+        assert_eq!(stats_client.get_total_products(), 0);
+
+        // Register products
+        let owner = Address::generate(&env);
+        register_test_product(&env, &registry_client, &owner, "PROD1");
+        register_test_product(&env, &registry_client, &owner, "PROD2");
+        register_test_product(&env, &registry_client, &owner, "PROD3");
+
+        // Updated count
+        assert_eq!(stats_client.get_total_products(), 3);
+    }
+
+    #[test]
+    fn test_get_active_products() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+        let owner = Address::generate(&env);
+
+        // Register and deactivate a product
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+        register_test_product(&env, &registry_client, &owner, "PROD2");
+
+        // Both active initially
+        assert_eq!(stats_client.get_active_products(), 2);
+
+        // Deactivate one
+        registry_client.deactivate_product(&owner, &product_id, &String::from_str(&env, "Testing"));
+
+        // One active now
+        assert_eq!(stats_client.get_active_products(), 1);
+    }
+
+    #[test]
+    fn test_get_inactive_products() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+        let owner = Address::generate(&env);
+
+        // Register products
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+        register_test_product(&env, &registry_client, &owner, "PROD2");
+
+        // No inactive initially
+        assert_eq!(stats_client.get_inactive_products(), 0);
+
+        // Deactivate one
+        registry_client.deactivate_product(&owner, &product_id, &String::from_str(&env, "Testing"));
+
+        // One inactive now
+        assert_eq!(stats_client.get_inactive_products(), 1);
+    }
+
+    #[test]
+    fn test_get_total_events() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, stats_client) = setup(&env);
+
+        // No events initially
+        assert_eq!(stats_client.get_total_events(), 0);
+    }
+
+    #[test]
+    fn test_get_product_stats() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Get product stats
+        let (event_count, is_active) = stats_client.get_product_stats(&product_id);
+        assert_eq!(event_count, 0); // No events yet
+        assert!(is_active); // Product is active
+
+        // Deactivate product
+        registry_client.deactivate_product(&owner, &product_id, &String::from_str(&env, "Testing"));
+
+        // Check stats again
+        let (event_count, is_active) = stats_client.get_product_stats(&product_id);
+        assert_eq!(event_count, 0);
+        assert!(!is_active); // Product is now inactive
+    }
+
+    #[test]
+    fn test_get_product_stats_not_found() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, stats_client) = setup(&env);
+
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+        let res = stats_client.try_get_product_stats(&fake_id);
+        assert_eq!(res, Err(Ok(Error::ProductNotFound)));
+    }
+
+    #[test]
+    fn test_get_average_events_per_product() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+
+        // No products - average should be 0
+        assert_eq!(stats_client.get_average_events_per_product(), 0);
+
+        // Register products
+        let owner = Address::generate(&env);
+        register_test_product(&env, &registry_client, &owner, "PROD1");
+        register_test_product(&env, &registry_client, &owner, "PROD2");
+
+        // Still 0 events - average should be 0
+        assert_eq!(stats_client.get_average_events_per_product(), 0);
+    }
+
+    #[test]
+    fn test_get_event_type_distribution() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (registry_client, _tracking_client, stats_client) = setup(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // No events yet - distribution should be empty
+        let distribution = stats_client.get_event_type_distribution(&product_id);
+        assert_eq!(distribution.len(), 0);
+    }
+
+    #[test]
+    fn test_get_event_type_distribution_not_found() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, stats_client) = setup(&env);
+
+        let fake_id = String::from_str(&env, "NONEXISTENT");
+        let res = stats_client.try_get_event_type_distribution(&fake_id);
+        assert_eq!(res, Err(Ok(Error::ProductNotFound)));
+    }
+
+    #[test]
+    fn test_init_already_initialized_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_registry_client, _tracking_client, stats_client) = setup(&env);
+        let pr_id = env.register_contract(None, ProductRegistryContract);
+        let tracking_id = env.register_contract(None, TrackingContract);
+
+        // Second init should fail
+        let res = stats_client.try_init(&pr_id, &tracking_id);
+        assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_stats_before_init_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let stats_id = env.register_contract(None, super::StatsContract);
+        let stats_client = super::StatsContractClient::new(&env, &stats_id);
+
+        // Get stats without initialization should fail
+        let res = stats_client.try_stats_get_stats();
+        assert_eq!(res, Err(Ok(Error::NotInitialized)));
+    }
+}
diff --git a/smart-contract/contracts/src/storage.rs b/smart-contract/contracts/src/storage.rs
new file mode 100644
index 00000000..e33064ff
--- /dev/null
+++ b/smart-contract/contracts/src/storage.rs
@@ -0,0 +1,382 @@
+use soroban_sdk::{Address, Env, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::storage_contract::StorageContract;
+use crate::types::{
+    ParameterStats, Product, QualityCertification, QualityDataKey, QualityParameter,
+    QualityReading, SensorInfo, TrackingEvent,
+};
+
+pub fn get_auth_contract(env: &Env) -> Option<Address> {
+    StorageContract::get_auth_contract(env)
+}
+
+pub fn set_auth_contract(env: &Env, address: &Address) {
+    StorageContract::set_auth_contract(env, address)
+}
+
+pub fn get_multisig_contract(env: &Env) -> Option<Address> {
+    StorageContract::get_multisig_contract(env)
+}
+
+pub fn set_multisig_contract(env: &Env, address: &Address) {
+    StorageContract::set_multisig_contract(env, address)
+}
+
+pub fn get_timelock_contract(env: &Env) -> Option<Address> {
+    StorageContract::get_timelock_contract(env)
+}
+
+pub fn set_timelock_contract(env: &Env, address: &Address) {
+    StorageContract::set_timelock_contract(env, address)
+}
+
+// ─── Product ────────────────────────────────────────────────────────────────
+
+pub fn has_product(env: &Env, product_id: &String) -> bool {
+    StorageContract::has_product(env, product_id)
+}
+
+pub fn put_product(env: &Env, product: &Product) {
+    StorageContract::put_product(env, product)
+}
+
+pub fn get_product(env: &Env, product_id: &String) -> Option<Product> {
+    StorageContract::get_product(env, product_id)
+}
+
+// ─── Event IDs per product ───────────────────────────────────────────────────
+
+pub fn put_product_event_ids(env: &Env, product_id: &String, ids: &Vec<u64>) {
+    StorageContract::put_product_event_ids(env, product_id, ids)
+}
+
+pub fn get_product_event_ids(env: &Env, product_id: &String) -> Vec<u64> {
+    StorageContract::get_product_event_ids(env, product_id)
+}
+
+pub fn get_product_event_ids_paginated(
+    env: &Env,
+    product_id: &String,
+    offset: u64,
+    limit: u64,
+) -> Vec<u64> {
+    StorageContract::get_product_event_ids_paginated(env, product_id, offset, limit)
+}
+
+// ─── Events ─────────────────────────────────────────────────────────────────
+
+pub fn put_event(env: &Env, event: &TrackingEvent) {
+    StorageContract::put_event(env, event)
+}
+
+pub fn get_event(env: &Env, event_id: u64) -> Option<TrackingEvent> {
+    StorageContract::get_event(env, event_id)
+}
+
+pub fn next_event_id(env: &Env) -> Result<u64, Error> {
+    StorageContract::next_event_id(env)
+}
+
+// ─── Event type index ────────────────────────────────────────────────────────
+
+pub fn index_event_by_type(
+    env: &Env,
+    product_id: &String,
+    event_type: &Symbol,
+    event_id: u64,
+) -> Result<(), Error> {
+    StorageContract::index_event_by_type(env, product_id, event_type, event_id)
+}
+
+pub fn acquire_reentrancy_lock(env: &Env, scope: &Symbol) -> Result<(), Error> {
+    StorageContract::acquire_reentrancy_lock(env, scope)
+}
+
+pub fn release_reentrancy_lock(env: &Env, scope: &Symbol) {
+    StorageContract::release_reentrancy_lock(env, scope)
+}
+
+pub fn get_event_ids_by_type(
+    env: &Env,
+    product_id: &String,
+    event_type: &Symbol,
+    offset: u64,
+    limit: u64,
+) -> Vec<u64> {
+    StorageContract::get_event_ids_by_type(env, product_id, event_type, offset, limit)
+}
+
+pub fn get_event_count_by_type(env: &Env, product_id: &String, event_type: &Symbol) -> u64 {
+    StorageContract::get_event_count_by_type(env, product_id, event_type)
+}
+
+// ─── Authorization ───────────────────────────────────────────────────────────
+
+pub fn set_auth(env: &Env, product_id: &String, actor: &Address, value: bool) {
+    StorageContract::set_auth(env, product_id, actor, value)
+}
+
+#[cfg(test)]
+#[allow(dead_code)]
+pub fn is_authorized(env: &Env, product_id: &String, actor: &Address) -> bool {
+    StorageContract::is_authorized(env, product_id, actor)
+}
+
+// ─── Global Management ───────────────────────────────────────────────────────
+
+pub fn has_admin(env: &Env) -> bool {
+    StorageContract::has_admin(env)
+}
+
+pub fn get_admin(env: &Env) -> Option<Address> {
+    StorageContract::get_admin(env)
+}
+
+pub fn set_admin(env: &Env, admin: &Address) {
+    StorageContract::set_admin(env, admin)
+}
+
+pub fn is_paused(env: &Env) -> bool {
+    StorageContract::is_paused(env)
+}
+
+pub fn set_paused(env: &Env, paused: bool) {
+    StorageContract::set_paused(env, paused)
+}
+
+// ─── Global counters ─────────────────────────────────────────────────────────
+
+pub fn get_total_products(env: &Env) -> u64 {
+    StorageContract::get_total_products(env)
+}
+
+pub fn set_total_products(env: &Env, count: u64) {
+    StorageContract::set_total_products(env, count)
+}
+
+pub fn get_active_products(env: &Env) -> u64 {
+    StorageContract::get_active_products(env)
+}
+
+pub fn set_active_products(env: &Env, count: u64) {
+    StorageContract::set_active_products(env, count)
+}
+
+// ─── Search Index ───────────────────────────────────────────────────────────
+
+pub fn put_search_index(env: &Env, keyword: &String, product_ids: &Vec<String>) {
+    env.storage().persistent().set(
+        &crate::types::DataKey::SearchIndex(crate::types::IndexKey::Keyword(keyword.clone())),
+        product_ids,
+    );
+}
+
+pub fn get_search_index(env: &Env, keyword: &String) -> Vec<String> {
+    env.storage()
+        .persistent()
+        .get(&crate::types::DataKey::SearchIndex(
+            crate::types::IndexKey::Keyword(keyword.clone()),
+        ))
+        .unwrap_or_else(|| Vec::new(env))
+}
+
+// Gas-optimized: Check existence before loading full vector
+pub fn add_to_search_index(env: &Env, keyword: String, product_id: &String) {
+    let mut ids = get_search_index(env, &keyword);
+    // Early exit if already indexed - saves gas
+    if ids.contains(product_id) {
+        return;
+    }
+    ids.push_back(product_id.clone());
+    put_search_index(env, &keyword, &ids);
+}
+
+// Gas-optimized: Use iterator pattern and early exit
+pub fn remove_from_search_index(env: &Env, keyword: String, product_id: &String) {
+    let mut ids = get_search_index(env, &keyword);
+    // Find and remove in single pass
+    for i in 0..ids.len() {
+        if ids.get(i).unwrap() == product_id.clone() {
+            ids.remove(i);
+            put_search_index(env, &keyword, &ids);
+            return; // Early exit saves gas
+        }
+    }
+    // No write if not found - saves gas
+}
+
+// ─── Quality Control ────────────────────────────────────────────────────────
+
+pub fn set_quality_control_enabled(env: &Env, product_id: &String, enabled: bool) {
+    env.storage().persistent().set(
+        &QualityDataKey::QualityControlEnabled(product_id.clone()),
+        &enabled,
+    );
+}
+
+#[allow(dead_code)]
+pub fn is_quality_control_enabled(env: &Env, product_id: &String) -> bool {
+    env.storage()
+        .persistent()
+        .get(&QualityDataKey::QualityControlEnabled(product_id.clone()))
+        .unwrap_or(false)
+}
+
+pub fn set_quality_control_admin(env: &Env, product_id: &String, admin: &Address) {
+    env.storage().persistent().set(
+        &QualityDataKey::QualityControlAdmin(product_id.clone()),
+        admin,
+    );
+}
+
+pub fn get_quality_control_admin(env: &Env, product_id: &String) -> Option<Address> {
+    env.storage()
+        .persistent()
+        .get(&QualityDataKey::QualityControlAdmin(product_id.clone()))
+}
+
+pub fn add_quality_certification(
+    env: &Env,
+    product_id: &String,
+    certification: &QualityCertification,
+) {
+    let key = QualityDataKey::QualityCertification(
+        product_id.clone(),
+        certification.certification_id.clone(),
+    );
+    env.storage().persistent().set(&key, certification);
+
+    // Add to certifications list
+    let list_key = QualityDataKey::QualityCertifications(product_id.clone());
+    let mut certs: Vec<QualityCertification> = env
+        .storage()
+        .persistent()
+        .get(&list_key)
+        .unwrap_or_else(|| Vec::new(env));
+    certs.push_back(certification.clone());
+    env.storage().persistent().set(&list_key, &certs);
+}
+
+pub fn get_quality_certifications(env: &Env, product_id: &String) -> Vec<QualityCertification> {
+    env.storage()
+        .persistent()
+        .get(&QualityDataKey::QualityCertifications(product_id.clone()))
+        .unwrap_or_else(|| Vec::new(env))
+}
+
+pub fn add_quality_reading(env: &Env, product_id: &String, reading: &QualityReading) {
+    let key = QualityDataKey::QualityReading(product_id.clone(), reading.reading_id.clone());
+    env.storage().persistent().set(&key, reading);
+
+    // Add to readings list
+    let list_key = QualityDataKey::QualityReadings(product_id.clone());
+    let mut readings: Vec<QualityReading> = env
+        .storage()
+        .persistent()
+        .get(&list_key)
+        .unwrap_or_else(|| Vec::new(env));
+    readings.push_back(reading.clone());
+    env.storage().persistent().set(&list_key, &readings);
+}
+
+pub fn get_quality_readings(env: &Env, product_id: &String) -> Vec<QualityReading> {
+    env.storage()
+        .persistent()
+        .get(&QualityDataKey::QualityReadings(product_id.clone()))
+        .unwrap_or_else(|| Vec::new(env))
+}
+
+pub fn set_quality_parameters(env: &Env, product_id: &String, parameters: &Vec<QualityParameter>) {
+    env.storage().persistent().set(
+        &QualityDataKey::QualityParameters(product_id.clone()),
+        parameters,
+    );
+}
+
+pub fn get_quality_parameters(env: &Env, product_id: &String) -> Vec<QualityParameter> {
+    env.storage()
+        .persistent()
+        .get(&QualityDataKey::QualityParameters(product_id.clone()))
+        .unwrap_or_else(|| Vec::new(env))
+}
+
+pub fn set_parameter_stats(
+    env: &Env,
+    product_id: &String,
+    parameter: &String,
+    stats: &ParameterStats,
+) {
+    env.storage().persistent().set(
+        &QualityDataKey::ParameterStats(product_id.clone(), parameter.clone()),
+        stats,
+    );
+}
+
+pub fn get_parameter_stats(env: &Env, product_id: &String, parameter: &String) -> ParameterStats {
+    env.storage()
+        .persistent()
+        .get(&QualityDataKey::ParameterStats(
+            product_id.clone(),
+            parameter.clone(),
+        ))
+        .unwrap_or(ParameterStats {
+            count: 0,
+            sum: 0,
+            min: 0,
+            max: 0,
+            avg: 0,
+            last_reading: 0,
+            last_timestamp: 0,
+        })
+}
+
+pub fn authorize_sensor(
+    env: &Env,
+    product_id: &String,
+    sensor_address: &Address,
+    sensor_id: &String,
+    sensor_type: &String,
+) {
+    let key = QualityDataKey::AuthorizedSensor(product_id.clone(), sensor_address.clone());
+    let info = SensorInfo {
+        address: sensor_address.clone(),
+        sensor_id: sensor_id.clone(),
+        sensor_type: sensor_type.clone(),
+        authorized: true,
+    };
+    env.storage().persistent().set(&key, &info);
+
+    // Add to authorized sensors list
+    let list_key = QualityDataKey::AuthorizedSensors(product_id.clone());
+    let mut sensors: Vec<Address> = env
+        .storage()
+        .persistent()
+        .get(&list_key)
+        .unwrap_or_else(|| Vec::new(env));
+    if !sensors.contains(sensor_address) {
+        sensors.push_back(sensor_address.clone());
+        env.storage().persistent().set(&list_key, &sensors);
+    }
+}
+
+pub fn revoke_sensor_authorization(env: &Env, product_id: &String, sensor_address: &Address) {
+    let key = QualityDataKey::AuthorizedSensor(product_id.clone(), sensor_address.clone());
+    if let Some(mut info) = env
+        .storage()
+        .persistent()
+        .get::<QualityDataKey, SensorInfo>(&key)
+    {
+        info.authorized = false;
+        env.storage().persistent().set(&key, &info);
+    }
+}
+
+pub fn is_authorized_sensor(env: &Env, product_id: &String, sensor_address: &Address) -> bool {
+    let key = QualityDataKey::AuthorizedSensor(product_id.clone(), sensor_address.clone());
+    env.storage()
+        .persistent()
+        .get::<QualityDataKey, SensorInfo>(&key)
+        .map(|info| info.authorized)
+        .unwrap_or(false)
+}
diff --git a/smart-contract/contracts/src/storage_contract.rs b/smart-contract/contracts/src/storage_contract.rs
new file mode 100644
index 00000000..b74b3743
--- /dev/null
+++ b/smart-contract/contracts/src/storage_contract.rs
@@ -0,0 +1,669 @@
+use soroban_sdk::{Address, Env, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::types::{DataKey, Product, TrackingEvent};
+
+pub struct StorageContract;
+
+impl StorageContract {
+    pub fn auth_contract_key() -> DataKey {
+        DataKey::AuthContract
+    }
+
+    pub fn multisig_contract_key() -> DataKey {
+        DataKey::MultiSigContract
+    }
+
+    pub fn timelock_contract_key() -> DataKey {
+        DataKey::TimelockContract
+    }
+
+    pub fn product_key(product_id: &String) -> DataKey {
+        DataKey::Product(product_id.clone())
+    }
+
+    pub fn product_event_ids_key(product_id: &String) -> DataKey {
+        DataKey::ProductEventIds(product_id.clone())
+    }
+
+    pub fn event_key(event_id: u64) -> DataKey {
+        DataKey::Event(event_id)
+    }
+
+    pub fn event_seq_key() -> DataKey {
+        DataKey::EventSeq
+    }
+
+    pub fn event_type_count_key(product_id: &String, event_type: &Symbol) -> DataKey {
+        DataKey::EventTypeCount(product_id.clone(), event_type.clone())
+    }
+
+    pub fn event_type_index_key(product_id: &String, event_type: &Symbol, index: u64) -> DataKey {
+        DataKey::EventTypeIndex(product_id.clone(), event_type.clone(), index)
+    }
+
+    pub fn auth_key(product_id: &String, actor: &Address) -> DataKey {
+        DataKey::Auth(product_id.clone(), actor.clone())
+    }
+
+    pub fn admin_key() -> DataKey {
+        DataKey::Admin
+    }
+
+    pub fn paused_key() -> DataKey {
+        DataKey::Paused
+    }
+
+    pub fn total_products_key() -> DataKey {
+        DataKey::TotalProducts
+    }
+
+    pub fn active_products_key() -> DataKey {
+        DataKey::ActiveProducts
+    }
+
+    pub fn get_auth_contract(env: &Env) -> Option<Address> {
+        env.storage().persistent().get(&Self::auth_contract_key())
+    }
+
+    pub fn set_auth_contract(env: &Env, address: &Address) {
+        env.storage()
+            .persistent()
+            .set(&Self::auth_contract_key(), address);
+    }
+
+    pub fn get_multisig_contract(env: &Env) -> Option<Address> {
+        env.storage()
+            .persistent()
+            .get(&Self::multisig_contract_key())
+    }
+
+    pub fn set_multisig_contract(env: &Env, address: &Address) {
+        env.storage()
+            .persistent()
+            .set(&Self::multisig_contract_key(), address);
+    }
+
+    pub fn get_timelock_contract(env: &Env) -> Option<Address> {
+        env.storage()
+            .persistent()
+            .get(&Self::timelock_contract_key())
+    }
+
+    pub fn set_timelock_contract(env: &Env, address: &Address) {
+        env.storage()
+            .persistent()
+            .set(&Self::timelock_contract_key(), address);
+    }
+
+    pub fn has_product(env: &Env, product_id: &String) -> bool {
+        env.storage()
+            .persistent()
+            .has(&Self::product_key(product_id))
+    }
+
+    pub fn put_product(env: &Env, product: &Product) {
+        env.storage()
+            .persistent()
+            .set(&Self::product_key(&product.id), product);
+    }
+
+    pub fn get_product(env: &Env, product_id: &String) -> Option<Product> {
+        env.storage()
+            .persistent()
+            .get(&Self::product_key(product_id))
+    }
+
+    pub fn put_product_event_ids(env: &Env, product_id: &String, ids: &Vec<u64>) {
+        env.storage()
+            .persistent()
+            .set(&Self::product_event_ids_key(product_id), ids);
+    }
+
+    pub fn get_product_event_ids(env: &Env, product_id: &String) -> Vec<u64> {
+        env.storage()
+            .persistent()
+            .get(&Self::product_event_ids_key(product_id))
+            .unwrap_or(Vec::new(env))
+    }
+
+    pub fn get_product_event_ids_paginated(
+        env: &Env,
+        product_id: &String,
+        offset: u64,
+        limit: u64,
+    ) -> Vec<u64> {
+        // Validate input parameters
+        if limit == 0 || limit > 1000 {
+            // Return empty result for invalid limit (0 or too large)
+            return Vec::new(env);
+        }
+
+        let all_ids = Self::get_product_event_ids(env, product_id);
+        let total = all_ids.len() as u64;
+
+        let mut result = Vec::new(env);
+
+        if offset >= total {
+            return result;
+        }
+
+        let end = ((offset + limit) as u32).min(all_ids.len());
+        let start = offset as u32;
+
+        for i in start..end {
+            if let Some(id) = all_ids.get(i) {
+                result.push_back(id);
+            }
+        }
+
+        result
+    }
+
+    pub fn put_event(env: &Env, event: &TrackingEvent) {
+        env.storage()
+            .persistent()
+            .set(&Self::event_key(event.event_id), event);
+    }
+
+    pub fn get_event(env: &Env, event_id: u64) -> Option<TrackingEvent> {
+        env.storage().persistent().get(&Self::event_key(event_id))
+    }
+
+    pub fn next_event_id(env: &Env) -> Result<u64, Error> {
+        let seq: u64 = env
+            .storage()
+            .persistent()
+            .get(&Self::event_seq_key())
+            .unwrap_or(0);
+        let next = seq.checked_add(1).ok_or(Error::ArithmeticOverflow)?;
+        env.storage()
+            .persistent()
+            .set(&Self::event_seq_key(), &next);
+        Ok(next)
+    }
+
+    pub fn index_event_by_type(
+        env: &Env,
+        product_id: &String,
+        event_type: &Symbol,
+        event_id: u64,
+    ) -> Result<(), Error> {
+        let count_key = Self::event_type_count_key(product_id, event_type);
+        let count: u64 = env.storage().persistent().get(&count_key).unwrap_or(0);
+
+        // Store at 0-based index (count represents next available index)
+        let index_key = Self::event_type_index_key(product_id, event_type, count);
+        env.storage().persistent().set(&index_key, &event_id);
+
+        // Increment count after storing
+        let next = count.checked_add(1).ok_or(Error::ArithmeticOverflow)?;
+        env.storage().persistent().set(&count_key, &next);
+        Ok(())
+    }
+
+    pub fn acquire_reentrancy_lock(env: &Env, scope: &Symbol) -> Result<(), Error> {
+        let key = DataKey::ReentrancyLock(scope.clone());
+        let locked: bool = env.storage().instance().get(&key).unwrap_or(false);
+        if locked {
+            return Err(Error::ReentrancyDetected);
+        }
+        env.storage().instance().set(&key, &true);
+        Ok(())
+    }
+
+    pub fn release_reentrancy_lock(env: &Env, scope: &Symbol) {
+        let key = DataKey::ReentrancyLock(scope.clone());
+        env.storage().instance().set(&key, &false);
+    }
+
+    pub fn get_event_ids_by_type(
+        env: &Env,
+        product_id: &String,
+        event_type: &Symbol,
+        offset: u64,
+        limit: u64,
+    ) -> Vec<u64> {
+        let count_key = Self::event_type_count_key(product_id, event_type);
+        let total: u64 = env.storage().persistent().get(&count_key).unwrap_or(0);
+
+        let mut result = Vec::new(env);
+
+        if offset >= total {
+            return result;
+        }
+
+        // Use 0-based indexing consistently
+        let start = offset;
+        let end = (start + limit).min(total);
+
+        for i in start..end {
+            let index_key = Self::event_type_index_key(product_id, event_type, i);
+            if let Some(event_id) = env.storage().persistent().get::<DataKey, u64>(&index_key) {
+                result.push_back(event_id);
+            }
+        }
+
+        result
+    }
+
+    pub fn get_event_count_by_type(env: &Env, product_id: &String, event_type: &Symbol) -> u64 {
+        let count_key = Self::event_type_count_key(product_id, event_type);
+        env.storage().persistent().get(&count_key).unwrap_or(0)
+    }
+
+    pub fn set_auth(env: &Env, product_id: &String, actor: &Address, value: bool) {
+        if value {
+            env.storage()
+                .persistent()
+                .set(&Self::auth_key(product_id, actor), &true);
+        } else {
+            env.storage()
+                .persistent()
+                .remove(&Self::auth_key(product_id, actor));
+        }
+    }
+
+    #[cfg(test)]
+    pub fn is_authorized(env: &Env, product_id: &String, actor: &Address) -> bool {
+        env.storage()
+            .persistent()
+            .get(&Self::auth_key(product_id, actor))
+            .unwrap_or(false)
+    }
+
+    pub fn has_admin(env: &Env) -> bool {
+        env.storage().persistent().has(&Self::admin_key())
+    }
+
+    pub fn get_admin(env: &Env) -> Option<Address> {
+        env.storage().persistent().get(&Self::admin_key())
+    }
+
+    pub fn set_admin(env: &Env, admin: &Address) {
+        env.storage().persistent().set(&Self::admin_key(), admin);
+    }
+
+    pub fn is_paused(env: &Env) -> bool {
+        env.storage()
+            .persistent()
+            .get(&Self::paused_key())
+            .unwrap_or(false)
+    }
+
+    pub fn set_paused(env: &Env, paused: bool) {
+        env.storage().persistent().set(&Self::paused_key(), &paused);
+    }
+
+    pub fn get_total_products(env: &Env) -> u64 {
+        env.storage()
+            .instance()
+            .get(&Self::total_products_key())
+            .unwrap_or(0)
+    }
+
+    pub fn set_total_products(env: &Env, count: u64) {
+        env.storage()
+            .instance()
+            .set(&Self::total_products_key(), &count);
+    }
+
+    pub fn get_active_products(env: &Env) -> u64 {
+        env.storage()
+            .instance()
+            .get(&Self::active_products_key())
+            .unwrap_or(0)
+    }
+
+    pub fn set_active_products(env: &Env, count: u64) {
+        env.storage()
+            .instance()
+            .set(&Self::active_products_key(), &count);
+    }
+}
+
+#[cfg(test)]
+mod test_storage_contract {
+    use super::*;
+    use soroban_sdk::{testutils::Address as _, BytesN, Map};
+
+    use crate::contract::ChainLogisticsContract;
+    use crate::types::Origin;
+
+    #[test]
+    fn test_product_put_get() {
+        let env = Env::default();
+        let owner = Address::generate(&env);
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+
+        let product = Product {
+            id: String::from_str(&env, "P1"),
+            name: String::from_str(&env, "Name"),
+            description: String::from_str(&env, "Desc"),
+            origin: Origin {
+                location: String::from_str(&env, "Loc"),
+            },
+            owner: owner.clone(),
+            created_at: 0,
+            active: true,
+            category: String::from_str(&env, "Cat"),
+            tags: Vec::new(&env),
+            certifications: Vec::new(&env),
+            media_hashes: Vec::new(&env),
+            custom: Map::new(&env),
+            deactivation_info: Vec::new(&env),
+        };
+
+        env.as_contract(&contract_id, || {
+            assert!(!StorageContract::has_product(&env, &product.id));
+            StorageContract::put_product(&env, &product);
+            assert!(StorageContract::has_product(&env, &product.id));
+            assert!(StorageContract::get_product(&env, &product.id).is_some());
+        });
+    }
+
+    #[test]
+    fn test_pagination_boundary_conditions() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+        let product_id = String::from_str(&env, "TEST_PRODUCT");
+
+        env.as_contract(&contract_id, || {
+            // Create test data - 5 event IDs
+            let mut test_ids = Vec::new(&env);
+            for i in 1..=5 {
+                test_ids.push_back(i);
+            }
+            StorageContract::put_product_event_ids(&env, &product_id, &test_ids);
+
+            // Test offset == len (should return empty)
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 5, 2);
+            assert_eq!(result.len(), 0);
+
+            // Test limit == 0 (should return empty due to validation)
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 0, 0);
+            assert_eq!(result.len(), 0);
+
+            // Test very large limit (should return empty due to validation)
+            let result =
+                StorageContract::get_product_event_ids_paginated(&env, &product_id, 0, 1001);
+            assert_eq!(result.len(), 0);
+
+            // Test offset > len (should return empty)
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 10, 2);
+            assert_eq!(result.len(), 0);
+
+            // Test normal cases
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 0, 3);
+            assert_eq!(result.len(), 3);
+            assert_eq!(result.get(0), Some(1));
+            assert_eq!(result.get(1), Some(2));
+            assert_eq!(result.get(2), Some(3));
+
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 3, 3);
+            assert_eq!(result.len(), 2);
+            assert_eq!(result.get(0), Some(4));
+            assert_eq!(result.get(1), Some(5));
+
+            // Test exact boundary
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 0, 5);
+            assert_eq!(result.len(), 5);
+
+            // Test limit larger than remaining
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 4, 10);
+            assert_eq!(result.len(), 1);
+            assert_eq!(result.get(0), Some(5));
+        });
+    }
+
+    #[test]
+    fn test_pagination_empty_list() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+        let product_id = String::from_str(&env, "EMPTY_PRODUCT");
+
+        env.as_contract(&contract_id, || {
+            // Test with empty product event IDs
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 0, 10);
+            assert_eq!(result.len(), 0);
+
+            // Test offset > 0 with empty list
+            let result = StorageContract::get_product_event_ids_paginated(&env, &product_id, 5, 10);
+            assert_eq!(result.len(), 0);
+        });
+    }
+
+    #[test]
+    fn test_event_type_indexing_0_based() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+        let product_id = String::from_str(&env, "TEST_PRODUCT");
+        let event_type = Symbol::new(&env, "test_type");
+
+        env.as_contract(&contract_id, || {
+            // Index first event at position 0
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 100).unwrap();
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 101).unwrap();
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 102).unwrap();
+
+            // Test offset=0, limit=1 returns first event ID
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 0, 1);
+            assert_eq!(result.len(), 1);
+            assert_eq!(result.get(0), Some(100));
+
+            // Test offset=1, limit=1 returns second event ID
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 1, 1);
+            assert_eq!(result.len(), 1);
+            assert_eq!(result.get(0), Some(101));
+
+            // Test offset=2, limit=1 returns third event ID
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 2, 1);
+            assert_eq!(result.len(), 1);
+            assert_eq!(result.get(0), Some(102));
+
+            // Test offset=0, limit=2 returns first two event IDs
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 0, 2);
+            assert_eq!(result.len(), 2);
+            assert_eq!(result.get(0), Some(100));
+            assert_eq!(result.get(1), Some(101));
+
+            // Test offset=1, limit=2 returns last two event IDs
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 1, 2);
+            assert_eq!(result.len(), 2);
+            assert_eq!(result.get(0), Some(101));
+            assert_eq!(result.get(1), Some(102));
+
+            // Test offset >= total returns empty
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 3, 1);
+            assert_eq!(result.len(), 0);
+
+            // Test pagination with limit larger than remaining
+            let result =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 1, 5);
+            assert_eq!(result.len(), 2);
+            assert_eq!(result.get(0), Some(101));
+            assert_eq!(result.get(1), Some(102));
+        });
+    }
+
+    #[test]
+    fn test_event_type_count_consistency() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+        let product_id = String::from_str(&env, "TEST_PRODUCT");
+        let event_type = Symbol::new(&env, "test_type");
+
+        env.as_contract(&contract_id, || {
+            // Initially count should be 0
+            assert_eq!(
+                StorageContract::get_event_count_by_type(&env, &product_id, &event_type),
+                0
+            );
+
+            // Add first event
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 100).unwrap();
+            assert_eq!(
+                StorageContract::get_event_count_by_type(&env, &product_id, &event_type),
+                1
+            );
+
+            // Add second event
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 101).unwrap();
+            assert_eq!(
+                StorageContract::get_event_count_by_type(&env, &product_id, &event_type),
+                2
+            );
+
+            // Add third event
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 102).unwrap();
+            assert_eq!(
+                StorageContract::get_event_count_by_type(&env, &product_id, &event_type),
+                3
+            );
+        });
+    }
+
+    #[test]
+    fn test_event_type_indexing_no_duplicates() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+        let product_id = String::from_str(&env, "TEST_PRODUCT");
+        let event_type = Symbol::new(&env, "test_type");
+
+        env.as_contract(&contract_id, || {
+            // Index 3 events
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 100).unwrap();
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 101).unwrap();
+            StorageContract::index_event_by_type(&env, &product_id, &event_type, 102).unwrap();
+
+            // Get all events in different pages
+            let page1 =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 0, 2);
+            let page2 =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 2, 2);
+            let page3 =
+                StorageContract::get_event_ids_by_type(&env, &product_id, &event_type, 1, 2);
+
+            // Collect all IDs and verify no duplicates manually
+            let mut all_found = Vec::new(&env);
+            all_found.push_back(100);
+            all_found.push_back(101);
+            all_found.push_back(102);
+
+            // Verify page1 contains first two
+            assert_eq!(page1.len(), 2);
+            let mut found_first_two = false;
+            for i in 0..page1.len() {
+                if let Some(id) = page1.get(i) {
+                    if id == 100 || id == 101 {
+                        found_first_two = true;
+                    }
+                }
+            }
+            assert!(found_first_two);
+
+            // Verify page2 contains third
+            assert_eq!(page2.len(), 1);
+            let mut found_third = false;
+            for i in 0..page2.len() {
+                if let Some(id) = page2.get(i) {
+                    if id == 102 {
+                        found_third = true;
+                    }
+                }
+            }
+            assert!(found_third);
+
+            // Verify page3 contains last two
+            assert_eq!(page3.len(), 2);
+            let mut found_last_two = false;
+            for i in 0..page3.len() {
+                if let Some(id) = page3.get(i) {
+                    if id == 101 || id == 102 {
+                        found_last_two = true;
+                    }
+                }
+            }
+            assert!(found_last_two);
+
+            // Verify total unique count
+            assert_eq!(all_found.len(), 3);
+        });
+    }
+
+    #[test]
+    fn test_event_id_sequence_increments() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+
+        env.as_contract(&contract_id, || {
+            assert_eq!(StorageContract::next_event_id(&env).unwrap(), 1);
+            assert_eq!(StorageContract::next_event_id(&env).unwrap(), 2);
+        });
+    }
+
+    #[test]
+    fn test_authorization_mapping() {
+        let env = Env::default();
+        let actor = Address::generate(&env);
+        let product_id = String::from_str(&env, "P1");
+
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+
+        env.as_contract(&contract_id, || {
+            assert!(!StorageContract::is_authorized(&env, &product_id, &actor));
+            StorageContract::set_auth(&env, &product_id, &actor, true);
+            assert!(StorageContract::is_authorized(&env, &product_id, &actor));
+            StorageContract::set_auth(&env, &product_id, &actor, false);
+            assert!(!StorageContract::is_authorized(&env, &product_id, &actor));
+        });
+    }
+
+    #[test]
+    fn test_counters_roundtrip() {
+        let env = Env::default();
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+
+        env.as_contract(&contract_id, || {
+            assert_eq!(StorageContract::get_total_products(&env), 0);
+            assert_eq!(StorageContract::get_active_products(&env), 0);
+
+            StorageContract::set_total_products(&env, 10);
+            StorageContract::set_active_products(&env, 7);
+
+            assert_eq!(StorageContract::get_total_products(&env), 10);
+            assert_eq!(StorageContract::get_active_products(&env), 7);
+        });
+    }
+
+    #[test]
+    fn test_event_put_get() {
+        let env = Env::default();
+        let owner = Address::generate(&env);
+        let contract_id = env.register_contract(None, ChainLogisticsContract);
+
+        let event = TrackingEvent {
+            event_id: 1,
+            product_id: String::from_str(&env, "P1"),
+            event_type: Symbol::new(&env, "created"),
+            location: String::from_str(&env, "Loc"),
+            data_hash: BytesN::from_array(&env, &[0; 32]),
+            note: String::from_str(&env, "Note"),
+            metadata: Map::new(&env),
+            actor: owner,
+            timestamp: 0,
+        };
+
+        env.as_contract(&contract_id, || {
+            assert!(StorageContract::get_event(&env, 1).is_none());
+            StorageContract::put_event(&env, &event);
+            assert!(StorageContract::get_event(&env, 1).is_some());
+        });
+    }
+}
diff --git a/smart-contract/contracts/src/test.rs b/smart-contract/contracts/src/test.rs
new file mode 100644
index 00000000..8022e815
--- /dev/null
+++ b/smart-contract/contracts/src/test.rs
@@ -0,0 +1,605 @@
+use soroban_sdk::{testutils::Address as _, Address, Env, Map, String, Symbol, Vec};
+
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, Error, ProductConfig,
+    ProductRegistryContract, ProductRegistryContractClient,
+};
+
+// ─── Test helpers ─────────────────────────────────────────────────────────────
+
+fn setup(env: &Env) -> ProductRegistryContractClient<'_> {
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let contract_id = env.register_contract(None, ProductRegistryContract);
+    let client = ProductRegistryContractClient::new(env, &contract_id);
+    let auth_client = AuthorizationContractClient::new(env, &auth_id);
+
+    auth_client.configure_initializer(&contract_id);
+    client.configure_auth_contract(&auth_id);
+
+    client
+}
+
+fn register_test_product(
+    env: &Env,
+    client: &ProductRegistryContractClient,
+    owner: &Address,
+) -> String {
+    let id = String::from_str(env, "COFFEE-ETH-001");
+    let config = ProductConfig {
+        id: id.clone(),
+        name: String::from_str(env, "Organic Coffee Beans"),
+        description: String::from_str(env, "Premium single-origin coffee from Ethiopia"),
+        origin_location: String::from_str(env, "Yirgacheffe, Ethiopia"),
+        category: String::from_str(env, "Coffee"),
+        tags: Vec::new(env),
+        certifications: Vec::new(env),
+        media_hashes: Vec::new(env),
+        custom: Map::new(env),
+    };
+
+    client.register_product(owner, &config);
+    id
+}
+
+// ═══════════════════════════════════════════════════════════════════════════════
+// REGISTRATION TESTS
+// ═══════════════════════════════════════════════════════════════════════════════
+
+#[test]
+fn test_register_and_get_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    let p = client.get_product(&id);
+    assert_eq!(p.id, id);
+    assert_eq!(p.owner, owner);
+    assert!(p.active, "new products must be active");
+    assert!(
+        p.deactivation_info.is_empty(),
+        "no deactivation info on new product"
+    );
+}
+
+#[test]
+fn test_register_increments_stats() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    let stats_before = client.get_stats();
+    assert_eq!(stats_before.total_products, 0);
+    assert_eq!(stats_before.active_products, 0);
+
+    register_test_product(&env, &client, &owner);
+
+    let stats_after = client.get_stats();
+    assert_eq!(stats_after.total_products, 1);
+    assert_eq!(stats_after.active_products, 1);
+}
+
+#[test]
+fn test_duplicate_product_rejected() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    let config = ProductConfig {
+        id: id.clone(),
+        name: String::from_str(&env, "Duplicate"),
+        description: String::from_str(&env, ""),
+        origin_location: String::from_str(&env, "Somewhere"),
+        category: String::from_str(&env, "Other"),
+        tags: Vec::new(&env),
+        certifications: Vec::new(&env),
+        media_hashes: Vec::new(&env),
+        custom: Map::new(&env),
+    };
+
+    let res = client.try_register_product(&owner, &config);
+    assert_eq!(res, Err(Ok(Error::ProductAlreadyExists)));
+}
+
+#[test]
+fn test_register_rejects_empty_id() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let config = ProductConfig {
+        id: String::from_str(&env, ""),
+        name: String::from_str(&env, "Name"),
+        description: String::from_str(&env, ""),
+        origin_location: String::from_str(&env, "Origin"),
+        category: String::from_str(&env, "Category"),
+        tags: Vec::new(&env),
+        certifications: Vec::new(&env),
+        media_hashes: Vec::new(&env),
+        custom: Map::new(&env),
+    };
+
+    let res = client.try_register_product(&owner, &config);
+    assert_eq!(res, Err(Ok(Error::InvalidProductId)));
+}
+
+#[test]
+fn test_register_rejects_empty_origin() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let config = ProductConfig {
+        id: String::from_str(&env, "ID-001"),
+        name: String::from_str(&env, "Name"),
+        description: String::from_str(&env, ""),
+        origin_location: String::from_str(&env, ""),
+        category: String::from_str(&env, "Category"),
+        tags: Vec::new(&env),
+        certifications: Vec::new(&env),
+        media_hashes: Vec::new(&env),
+        custom: Map::new(&env),
+    };
+
+    let res = client.try_register_product(&owner, &config);
+    assert_eq!(res, Err(Ok(Error::InvalidOrigin)));
+}
+
+// ═══════════════════════════════════════════════════════════════════════════════
+// DEACTIVATION TESTS
+// ═══════════════════════════════════════════════════════════════════════════════
+
+#[test]
+fn test_owner_can_deactivate_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    client.deactivate_product(
+        &owner,
+        &id,
+        &String::from_str(&env, "Reached final destination"),
+    );
+
+    let p = client.get_product(&id);
+    assert!(!p.active, "product should be inactive after deactivation");
+
+    let info = p.deactivation_info.get_unchecked(0);
+    assert_eq!(
+        info.reason,
+        String::from_str(&env, "Reached final destination")
+    );
+    assert_eq!(info.deactivated_by, owner);
+}
+
+#[test]
+fn test_deactivation_updates_active_counter() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    assert_eq!(client.get_stats().active_products, 1);
+    assert_eq!(client.get_stats().total_products, 1);
+
+    client.deactivate_product(&owner, &id, &String::from_str(&env, "Lifecycle complete"));
+
+    let stats = client.get_stats();
+    assert_eq!(stats.total_products, 1);
+    assert_eq!(stats.active_products, 0);
+}
+
+#[test]
+fn test_non_owner_cannot_deactivate() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let attacker = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    let res = client.try_deactivate_product(
+        &attacker,
+        &id,
+        &String::from_str(&env, "Malicious deactivation"),
+    );
+    assert_eq!(res, Err(Ok(Error::Unauthorized)));
+}
+
+#[test]
+fn test_deactivate_nonexistent_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let res = client.try_deactivate_product(
+        &owner,
+        &String::from_str(&env, "GHOST-001"),
+        &String::from_str(&env, "reason"),
+    );
+    assert_eq!(res, Err(Ok(Error::ProductNotFound)));
+}
+
+#[test]
+fn test_deactivate_requires_nonempty_reason() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    let res = client.try_deactivate_product(&owner, &id, &String::from_str(&env, ""));
+    assert_eq!(res, Err(Ok(Error::DeactivationReasonRequired)));
+}
+
+#[test]
+fn test_deactivate_already_inactive_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    client.deactivate_product(&owner, &id, &String::from_str(&env, "First deactivation"));
+
+    let res = client.try_deactivate_product(
+        &owner,
+        &id,
+        &String::from_str(&env, "Cannot deactivate again"),
+    );
+    assert_eq!(res, Err(Ok(Error::ProductDeactivated)));
+}
+
+// ═══════════════════════════════════════════════════════════════════════════════
+// REACTIVATION TESTS
+// ═══════════════════════════════════════════════════════════════════════════════
+
+#[test]
+fn test_owner_can_reactivate_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    client.deactivate_product(&owner, &id, &String::from_str(&env, "Temporary suspension"));
+    assert!(!client.get_product(&id).active);
+
+    client.reactivate_product(&owner, &id);
+
+    let p = client.get_product(&id);
+    assert!(p.active, "product should be active after reactivation");
+    assert!(
+        p.deactivation_info.is_empty(),
+        "deactivation_info should be cleared on reactivation"
+    );
+}
+
+#[test]
+fn test_reactivation_updates_active_counter() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    client.deactivate_product(&owner, &id, &String::from_str(&env, "Suspended"));
+    assert_eq!(client.get_stats().active_products, 0);
+
+    client.reactivate_product(&owner, &id);
+    assert_eq!(client.get_stats().active_products, 1);
+}
+
+#[test]
+fn test_non_owner_cannot_reactivate() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let attacker = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    client.deactivate_product(&owner, &id, &String::from_str(&env, "Suspended"));
+
+    let res = client.try_reactivate_product(&attacker, &id);
+    assert_eq!(res, Err(Ok(Error::Unauthorized)));
+}
+
+#[test]
+fn test_reactivate_already_active_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+    let id = register_test_product(&env, &client, &owner);
+
+    let res = client.try_reactivate_product(&owner, &id);
+    assert_eq!(res, Err(Ok(Error::ProductAlreadyActive)));
+}
+
+// ═══════════════════════════════════════════════════════════════════════════════
+// MULTI-PRODUCT STATS
+// ═══════════════════════════════════════════════════════════════════════════════
+
+#[test]
+fn test_multiple_products_stats_tracking() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    for suffix in ["A", "B", "C"] {
+        let id = String::from_str(&env, &["PROD-", suffix].concat());
+        let config = ProductConfig {
+            id,
+            name: String::from_str(&env, "Product"),
+            description: String::from_str(&env, ""),
+            origin_location: String::from_str(&env, "Origin"),
+            category: String::from_str(&env, "Category"),
+            tags: Vec::new(&env),
+            certifications: Vec::new(&env),
+            media_hashes: Vec::new(&env),
+            custom: Map::new(&env),
+        };
+        client.register_product(&owner, &config);
+    }
+
+    let stats = client.get_stats();
+    assert_eq!(stats.total_products, 3);
+    assert_eq!(stats.active_products, 3);
+
+    client.deactivate_product(
+        &owner,
+        &String::from_str(&env, "PROD-A"),
+        &String::from_str(&env, "Delivered"),
+    );
+    client.deactivate_product(
+        &owner,
+        &String::from_str(&env, "PROD-B"),
+        &String::from_str(&env, "Recalled"),
+    );
+
+    let stats = client.get_stats();
+    assert_eq!(stats.total_products, 3, "total includes inactive products");
+    assert_eq!(stats.active_products, 1, "only 1 active remaining");
+
+    client.reactivate_product(&owner, &String::from_str(&env, "PROD-B"));
+
+    let stats = client.get_stats();
+    assert_eq!(stats.total_products, 3);
+    assert_eq!(stats.active_products, 2);
+}
+
+// ═══════════════════════════════════════════════════════════════════════════════
+// PRODUCT SEARCH TESTS
+// ═══════════════════════════════════════════════════════════════════════════════
+
+#[test]
+fn test_search_products_by_name() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    // Register test products
+    let coffee_id = register_test_product(&env, &client, &owner);
+
+    let tea_id = String::from_str(&env, "TEA-CHN-001");
+    let tea_config = ProductConfig {
+        id: tea_id.clone(),
+        name: String::from_str(&env, "Green Tea Leaves"),
+        description: String::from_str(&env, "Premium green tea from China"),
+        origin_location: String::from_str(&env, "Hangzhou, China"),
+        category: String::from_str(&env, "Tea"),
+        tags: Vec::new(&env),
+        certifications: Vec::new(&env),
+        media_hashes: Vec::new(&env),
+        custom: Map::new(&env),
+    };
+    client.register_product(&owner, &tea_config);
+
+    // Test search by exact name
+    let results = client.search_products(&String::from_str(&env, "Organic Coffee Beans"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(coffee_id.clone()));
+
+    // Test search by partial name (should find coffee by category)
+    let results = client.search_products(&String::from_str(&env, "Coffee"), &10u32);
+    assert_eq!(results.len(), 1); // Found by category "Coffee"
+    assert_eq!(results.get(0), Some(coffee_id));
+
+    // Test search by tea name
+    let results = client.search_products(&String::from_str(&env, "Green Tea Leaves"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(tea_id));
+}
+
+#[test]
+fn test_search_products_by_origin() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    // Register test products
+    let coffee_id = register_test_product(&env, &client, &owner);
+
+    let tea_id = String::from_str(&env, "TEA-CHN-001");
+    let tea_config = ProductConfig {
+        id: tea_id.clone(),
+        name: String::from_str(&env, "Green Tea Leaves"),
+        description: String::from_str(&env, "Premium green tea from China"),
+        origin_location: String::from_str(&env, "Hangzhou, China"),
+        category: String::from_str(&env, "Tea"),
+        tags: Vec::new(&env),
+        certifications: Vec::new(&env),
+        media_hashes: Vec::new(&env),
+        custom: Map::new(&env),
+    };
+    client.register_product(&owner, &tea_config);
+
+    // Test search by origin
+    let results = client.search_products(&String::from_str(&env, "Yirgacheffe, Ethiopia"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(coffee_id));
+
+    let results = client.search_products(&String::from_str(&env, "Hangzhou, China"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(tea_id));
+}
+
+#[test]
+fn test_search_products_by_category() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    // Register test products
+    let coffee_id = register_test_product(&env, &client, &owner);
+
+    let tea_id = String::from_str(&env, "TEA-CHN-001");
+    let tea_config = ProductConfig {
+        id: tea_id.clone(),
+        name: String::from_str(&env, "Green Tea Leaves"),
+        description: String::from_str(&env, "Premium green tea from China"),
+        origin_location: String::from_str(&env, "Hangzhou, China"),
+        category: String::from_str(&env, "Tea"),
+        tags: Vec::new(&env),
+        certifications: Vec::new(&env),
+        media_hashes: Vec::new(&env),
+        custom: Map::new(&env),
+    };
+    client.register_product(&owner, &tea_config);
+
+    // Test search by category
+    let results = client.search_products(&String::from_str(&env, "Coffee"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(coffee_id));
+
+    let results = client.search_products(&String::from_str(&env, "Tea"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(tea_id));
+}
+
+#[test]
+fn test_search_products_with_limit() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    // Register multiple products with same category
+    let product_names = [
+        "COFFEE-001",
+        "COFFEE-002",
+        "COFFEE-003",
+        "COFFEE-004",
+        "COFFEE-005",
+    ];
+    for name in &product_names {
+        let id = String::from_str(&env, name);
+        let config = ProductConfig {
+            id: id.clone(),
+            name: String::from_str(&env, "Coffee Beans"),
+            description: String::from_str(&env, "Premium coffee"),
+            origin_location: String::from_str(&env, "Various"),
+            category: String::from_str(&env, "Coffee"),
+            tags: Vec::new(&env),
+            certifications: Vec::new(&env),
+            media_hashes: Vec::new(&env),
+            custom: Map::new(&env),
+        };
+        client.register_product(&owner, &config);
+    }
+
+    // Test search with limit
+    let results = client.search_products(&String::from_str(&env, "Coffee"), &3u32);
+    assert_eq!(results.len(), 3);
+
+    // Test search with zero limit
+    let results = client.search_products(&String::from_str(&env, "Coffee"), &0u32);
+    assert_eq!(results.len(), 0);
+}
+
+#[test]
+fn test_search_products_deactivated() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    // Register test product
+    let coffee_id = register_test_product(&env, &client, &owner);
+
+    // Verify product is searchable
+    let results = client.search_products(&String::from_str(&env, "Organic Coffee Beans"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(coffee_id.clone()));
+
+    // Deactivate product
+    client.deactivate_product(
+        &owner,
+        &coffee_id,
+        &String::from_str(&env, "Test deactivation"),
+    );
+
+    // Verify product is no longer searchable
+    let results = client.search_products(&String::from_str(&env, "Organic Coffee Beans"), &10u32);
+    assert_eq!(results.len(), 0);
+
+    // Reactivate product
+    client.reactivate_product(&owner, &coffee_id);
+
+    // Verify product is searchable again
+    let results = client.search_products(&String::from_str(&env, "Organic Coffee Beans"), &10u32);
+    assert_eq!(results.len(), 1);
+    assert_eq!(results.get(0), Some(coffee_id));
+}
+
+#[test]
+fn test_search_products_no_results() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let client = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    // Register test product
+    register_test_product(&env, &client, &owner);
+
+    // Test search with no results
+    let results = client.search_products(&String::from_str(&env, "Nonexistent Product"), &10u32);
+    assert_eq!(results.len(), 0);
+
+    let results = client.search_products(&String::from_str(&env, "Wine"), &10u32);
+    assert_eq!(results.len(), 0);
+}
diff --git a/smart-contract/contracts/src/test/integration_tests.rs b/smart-contract/contracts/src/test/integration_tests.rs
new file mode 100644
index 00000000..d7218e21
--- /dev/null
+++ b/smart-contract/contracts/src/test/integration_tests.rs
@@ -0,0 +1,270 @@
+use soroban_sdk::{log, testutils::Address as _, Address, BytesN, Env, Map, String, Symbol, Vec};
+
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, ChainLogisticsContract,
+    ChainLogisticsContractClient, Error, EventQueryContract, EventQueryContractClient,
+    ProductConfig, ProductRegistryContract, ProductRegistryContractClient, ProductTransferContract,
+    ProductTransferContractClient, TrackingContract, TrackingContractClient,
+};
+
+fn setup(
+    env: &Env,
+) -> (
+    ChainLogisticsContractClient,
+    Address,
+    ProductRegistryContractClient,
+    AuthorizationContractClient,
+    ProductTransferContractClient,
+    TrackingContractClient,
+    EventQueryContractClient,
+) {
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let registry_id = env.register_contract(None, ProductRegistryContract);
+    let transfer_id = env.register_contract(None, ProductTransferContract);
+    let tracking_id = env.register_contract(None, TrackingContract);
+    let query_id = env.register_contract(None, EventQueryContract);
+
+    let auth = AuthorizationContractClient::new(env, &auth_id);
+    let cl = ChainLogisticsContractClient::new(env, &cl_id);
+    let registry = ProductRegistryContractClient::new(env, &registry_id);
+    let transfer = ProductTransferContractClient::new(env, &transfer_id);
+    let tracking = TrackingContractClient::new(env, &tracking_id);
+    let query = EventQueryContractClient::new(env, &query_id);
+
+    auth.configure_initializer(&registry_id);
+    let admin = Address::generate(env);
+    cl.init(&admin, &auth_id);
+    registry.configure_auth_contract(&auth_id);
+    transfer.pt_init(&registry_id, &auth_id);
+    tracking.init(&cl_id);
+    query.init(&registry_id, &tracking_id);
+
+    (cl, admin, registry, auth, transfer, tracking, query)
+}
+
+fn register_product(
+    env: &Env,
+    registry: &ProductRegistryContractClient,
+    owner: &Address,
+    id: &str,
+) -> String {
+    let product_id = String::from_str(env, id);
+    registry.register_product(
+        owner,
+        &ProductConfig {
+            id: product_id.clone(),
+            name: String::from_str(env, "Integration Product"),
+            description: String::from_str(env, "integration path"),
+            origin_location: String::from_str(env, "Accra"),
+            category: String::from_str(env, "Coffee"),
+            tags: Vec::new(env),
+            certifications: Vec::new(env),
+            media_hashes: Vec::new(env),
+            custom: Map::new(env),
+        },
+    );
+    product_id
+}
+
+fn add_tracking_event(
+    env: &Env,
+    tracking: &TrackingContractClient,
+    actor: &Address,
+    product_id: &String,
+    event_type: &Symbol,
+    location: &String,
+    note: &String,
+) -> u64 {
+    tracking.tracking_add_event(
+        actor,
+        product_id,
+        event_type,
+        location,
+        &BytesN::from_array(env, &[0; 32]),
+        note,
+        &Map::new(env),
+    )
+}
+
+fn reset_and_print_budget(env: &Env, label: &str) {
+    env.budget().reset_tracker();
+    log!(env, "BUDGET_START {}", label);
+}
+
+fn print_budget(env: &Env, label: &str) {
+    let cpu = env.budget().cpu_instruction_cost();
+    let mem = env.budget().memory_bytes_cost();
+    log!(
+        env,
+        "BUDGET_END {} cpu_instruction_cost={} memory_bytes_cost={}",
+        label,
+        cpu,
+        mem
+    );
+    env.budget().print();
+}
+
+#[test]
+fn e2e_product_registration_flow() {
+    let env = Env::default();
+    let (_cl, _admin, registry, auth, _transfer, _tracking, _query) = setup(&env);
+
+    let owner = Address::generate(&env);
+
+    reset_and_print_budget(&env, "register_product");
+    let id = register_product(&env, &registry, &owner, "INTEG-REG-001");
+    print_budget(&env, "register_product");
+
+    let p = registry.get_product(&id);
+    assert_eq!(p.id, id);
+    assert_eq!(p.owner, owner);
+    assert!(p.active);
+
+    assert!(auth.is_authorized(&id, &owner));
+}
+
+#[test]
+fn multi_actor_event_tracking_flow() {
+    let env = Env::default();
+    let (_cl, _admin, registry, auth, _transfer, tracking, query) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let actor_a = Address::generate(&env);
+    let actor_b = Address::generate(&env);
+
+    let id = register_product(&env, &registry, &owner, "INTEG-TRK-001");
+
+    auth.add_authorized_actor(&owner, &id, &actor_a);
+    auth.add_authorized_actor(&owner, &id, &actor_b);
+
+    let shipped = Symbol::new(&env, "shipped");
+    let received = Symbol::new(&env, "received");
+
+    reset_and_print_budget(&env, "tracking_add_event_owner");
+    let e1 = add_tracking_event(
+        &env,
+        &tracking,
+        &owner,
+        &id,
+        &shipped,
+        &String::from_str(&env, "Warehouse A"),
+        &String::from_str(&env, "Packed"),
+    );
+    print_budget(&env, "tracking_add_event_owner");
+
+    reset_and_print_budget(&env, "tracking_add_event_actor_a");
+    let e2 = add_tracking_event(
+        &env,
+        &tracking,
+        &actor_a,
+        &id,
+        &shipped,
+        &String::from_str(&env, "Port"),
+        &String::from_str(&env, "Departed"),
+    );
+    print_budget(&env, "tracking_add_event_actor_a");
+
+    reset_and_print_budget(&env, "tracking_add_event_actor_b");
+    let e3 = add_tracking_event(
+        &env,
+        &tracking,
+        &actor_b,
+        &id,
+        &received,
+        &String::from_str(&env, "Destination"),
+        &String::from_str(&env, "Arrived"),
+    );
+    print_budget(&env, "tracking_add_event_actor_b");
+
+    assert_eq!(e1, 1);
+    assert_eq!(e2, 2);
+    assert_eq!(e3, 3);
+
+    let page = query.query_get_product_events(&id, &0u64, &10u64);
+    assert_eq!(page.total_count, 3);
+    assert_eq!(page.events.len(), 3);
+
+    let first = page.events.get_unchecked(0);
+    let last = page.events.get_unchecked(2);
+    assert_eq!(first.product_id, id);
+    assert_eq!(last.product_id, id);
+}
+
+#[test]
+fn ownership_transfer_flow() {
+    let env = Env::default();
+    let (_cl, _admin, registry, auth, transfer, _tracking, _query) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+    let actor = Address::generate(&env);
+
+    let id = register_product(&env, &registry, &owner, "INTEG-XFER-001");
+    auth.add_authorized_actor(&owner, &id, &actor);
+    assert!(auth.is_authorized(&id, &actor));
+
+    reset_and_print_budget(&env, "transfer_product");
+    transfer.transfer_product(&owner, &id, &new_owner);
+    print_budget(&env, "transfer_product");
+
+    let p = registry.get_product(&id);
+    assert_eq!(p.owner, new_owner);
+
+    assert!(!auth.is_authorized(&id, &owner));
+    assert!(auth.is_authorized(&id, &new_owner));
+
+    let old_owner_add = auth.try_add_authorized_actor(&owner, &id, &actor);
+    assert_eq!(old_owner_add, Err(Ok(Error::Unauthorized)));
+
+    auth.add_authorized_actor(&new_owner, &id, &actor);
+    assert!(auth.is_authorized(&id, &actor));
+}
+
+#[test]
+fn error_cases_integration() {
+    let env = Env::default();
+    let (cl, admin, registry, auth, transfer, tracking, query) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let attacker = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+
+    let id = register_product(&env, &registry, &owner, "INTEG-ERR-001");
+
+    let res = transfer.try_transfer_product(&attacker, &id, &new_owner);
+    assert_eq!(res, Err(Ok(Error::Unauthorized)));
+
+    let page = query.query_get_product_events(&id, &0u64, &10u64);
+    assert_eq!(page.total_count, 0);
+
+    registry.deactivate_product(&owner, &id, &String::from_str(&env, "finalized"));
+    let blocked = transfer.try_transfer_product(&owner, &id, &new_owner);
+    assert_eq!(blocked, Err(Ok(Error::ProductDeactivated)));
+
+    let missing =
+        query.try_query_get_product_events(&String::from_str(&env, "MISSING"), &0u64, &10u64);
+    assert_eq!(missing, Err(Ok(Error::ProductNotFound)));
+
+    let unauthorized = auth.try_add_authorized_actor(&attacker, &id, &attacker);
+    assert_eq!(unauthorized, Err(Ok(Error::Unauthorized)));
+
+    let not_found = tracking.try_tracking_get_event(&999);
+    assert_eq!(not_found, Err(Ok(Error::EventNotFound)));
+
+    // Pause (via ChainLogisticsContract) should block tracking adds.
+    cl.pause(&admin);
+
+    let res = tracking.try_tracking_add_event(
+        &owner,
+        &id,
+        &Symbol::new(&env, "shipped"),
+        &String::from_str(&env, "X"),
+        &BytesN::from_array(&env, &[0; 32]),
+        &String::from_str(&env, "Y"),
+        &Map::new(&env),
+    );
+    assert_eq!(res, Err(Ok(Error::ContractPaused)));
+}
diff --git a/smart-contract/contracts/src/test/supply_chain_scenarios.rs b/smart-contract/contracts/src/test/supply_chain_scenarios.rs
new file mode 100644
index 00000000..a6e4ec95
--- /dev/null
+++ b/smart-contract/contracts/src/test/supply_chain_scenarios.rs
@@ -0,0 +1,680 @@
+// Integration tests for complete supply chain scenarios
+#![allow(unused_variables)]
+use soroban_sdk::{testutils::Address as _, Address, BytesN, Env, Map, String, Symbol, Vec};
+
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, ChainLogisticsContract,
+    ChainLogisticsContractClient, ProductConfig, ProductRegistryContract,
+    ProductRegistryContractClient, ProductTransferContract, ProductTransferContractClient,
+    TrackingContract, TrackingContractClient,
+};
+
+// --- Test Setup Helpers ---------------------------------------------------
+
+fn setup(
+    env: &Env,
+) -> (
+    ChainLogisticsContractClient,
+    ProductRegistryContractClient,
+    AuthorizationContractClient,
+    ProductTransferContractClient,
+    TrackingContractClient,
+) {
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let registry_id = env.register_contract(None, ProductRegistryContract);
+    let transfer_id = env.register_contract(None, ProductTransferContract);
+    let tracking_id = env.register_contract(None, TrackingContract);
+
+    let cl = ChainLogisticsContractClient::new(env, &cl_id);
+    let registry = ProductRegistryContractClient::new(env, &registry_id);
+    let auth = AuthorizationContractClient::new(env, &auth_id);
+    let transfer = ProductTransferContractClient::new(env, &transfer_id);
+    let tracking = TrackingContractClient::new(env, &tracking_id);
+
+    let admin = Address::generate(env);
+    auth.configure_initializer(&registry_id);
+    registry.configure_auth_contract(&auth_id);
+    registry.configure_transfer_contract(&transfer_id);
+    transfer.pt_init(&registry_id, &auth_id);
+    tracking.init(&cl_id);
+    cl.init(&admin, &auth_id);
+
+    (cl, registry, auth, transfer, tracking)
+}
+
+fn register_product(
+    env: &Env,
+    registry: &ProductRegistryContractClient,
+    owner: &Address,
+    id: &str,
+    name: &str,
+    category: &str,
+) -> String {
+    let product_id = String::from_str(env, id);
+    registry.register_product(
+        owner,
+        &ProductConfig {
+            id: product_id.clone(),
+            name: String::from_str(env, name),
+            description: String::from_str(env, "Test product"),
+            origin_location: String::from_str(env, "Factory"),
+            category: String::from_str(env, category),
+            tags: Vec::new(env),
+            certifications: Vec::new(env),
+            media_hashes: Vec::new(env),
+            custom: Map::new(env),
+        },
+    );
+    product_id
+}
+
+fn add_event(
+    env: &Env,
+    tracking: &TrackingContractClient,
+    actor: &Address,
+    product_id: &String,
+    event_type: &str,
+    location: &str,
+    note: &str,
+) -> u64 {
+    tracking.tracking_add_event(
+        actor,
+        product_id,
+        &Symbol::new(env, event_type),
+        &String::from_str(env, location),
+        &BytesN::from_array(env, &[0; 32]),
+        &String::from_str(env, note),
+        &Map::new(env),
+    )
+}
+
+fn add_event_with_metadata(
+    env: &Env,
+    tracking: &TrackingContractClient,
+    actor: &Address,
+    product_id: &String,
+    event_type: &str,
+    location: &str,
+    note: &str,
+    metadata: Map<Symbol, String>,
+) -> u64 {
+    tracking.tracking_add_event(
+        actor,
+        product_id,
+        &Symbol::new(env, event_type),
+        &String::from_str(env, location),
+        &BytesN::from_array(env, &[0; 32]),
+        &String::from_str(env, note),
+        &metadata,
+    )
+}
+
+// --- Scenario Tests -------------------------------------------------------
+
+#[test]
+fn test_complete_electronics_supply_chain() {
+    let env = Env::default();
+    let (_cl, registry, auth, transfer, tracking) = setup(&env);
+
+    let manufacturer = Address::generate(&env);
+    let distributor = Address::generate(&env);
+    let retailer = Address::generate(&env);
+    let warehouse_operator = Address::generate(&env);
+
+    let product_id = register_product(
+        &env,
+        &registry,
+        &manufacturer,
+        "LAPTOP-001",
+        "Gaming Laptop",
+        "Electronics",
+    );
+
+    auth.add_authorized_actor(&manufacturer, &product_id, &warehouse_operator);
+
+    add_event(
+        &env,
+        &tracking,
+        &manufacturer,
+        &product_id,
+        "manufactured",
+        "Factory Floor A",
+        "Quality check passed",
+    );
+    add_event(
+        &env,
+        &tracking,
+        &warehouse_operator,
+        &product_id,
+        "stored",
+        "Warehouse Zone B",
+        "Temperature controlled storage",
+    );
+
+    transfer.transfer_product(&manufacturer, &product_id, &distributor);
+
+    let product = registry.get_product(&product_id);
+    assert_eq!(product.owner, distributor);
+
+    add_event(
+        &env,
+        &tracking,
+        &distributor,
+        &product_id,
+        "shipped",
+        "Distribution Center",
+        "Express shipping",
+    );
+
+    transfer.transfer_product(&distributor, &product_id, &retailer);
+
+    add_event(
+        &env,
+        &tracking,
+        &retailer,
+        &product_id,
+        "received",
+        "Retail Store",
+        "Ready for sale",
+    );
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 4);
+
+    let final_product = registry.get_product(&product_id);
+    assert_eq!(final_product.owner, retailer);
+}
+
+#[test]
+fn test_pharmaceutical_cold_chain_with_compliance() {
+    let env = Env::default();
+    let (_cl, registry, auth, transfer, tracking) = setup(&env);
+
+    let pharma_manufacturer = Address::generate(&env);
+    let cold_storage = Address::generate(&env);
+    let pharmacy = Address::generate(&env);
+
+    let product_id = String::from_str(&env, "VACCINE-001");
+    let mut certifications: Vec<BytesN<32>> = Vec::new(&env);
+    certifications.push_back(BytesN::from_array(&env, &[0x01u8; 32]));
+    certifications.push_back(BytesN::from_array(&env, &[0x02u8; 32]));
+
+    registry.register_product(
+        &pharma_manufacturer,
+        &ProductConfig {
+            id: product_id.clone(),
+            name: String::from_str(&env, "COVID-19 Vaccine"),
+            description: String::from_str(&env, "mRNA vaccine"),
+            origin_location: String::from_str(&env, "Pharma Lab"),
+            category: String::from_str(&env, "Pharmaceuticals"),
+            tags: Vec::new(&env),
+            certifications,
+            media_hashes: Vec::new(&env),
+            custom: Map::new(&env),
+        },
+    );
+
+    auth.add_authorized_actor(&pharma_manufacturer, &product_id, &cold_storage);
+
+    let mut meta_mfg: Map<Symbol, String> = Map::new(&env);
+    meta_mfg.set(Symbol::new(&env, "temp"), String::from_str(&env, "-70C"));
+    add_event_with_metadata(
+        &env,
+        &tracking,
+        &pharma_manufacturer,
+        &product_id,
+        "manufactured",
+        "Clean Room 1",
+        "Batch QC passed",
+        meta_mfg,
+    );
+
+    let mut meta_storage: Map<Symbol, String> = Map::new(&env);
+    meta_storage.set(Symbol::new(&env, "temp"), String::from_str(&env, "-70C"));
+    meta_storage.set(
+        Symbol::new(&env, "humidity"),
+        String::from_str(&env, "45pct"),
+    );
+    add_event_with_metadata(
+        &env,
+        &tracking,
+        &cold_storage,
+        &product_id,
+        "stored",
+        "Cold Storage Unit 5",
+        "Temperature stable",
+        meta_storage,
+    );
+
+    transfer.transfer_product(&pharma_manufacturer, &product_id, &pharmacy);
+
+    let mut meta_recv: Map<Symbol, String> = Map::new(&env);
+    meta_recv.set(Symbol::new(&env, "temp"), String::from_str(&env, "-68C"));
+    add_event_with_metadata(
+        &env,
+        &tracking,
+        &pharmacy,
+        &product_id,
+        "received",
+        "Pharmacy Cold Storage",
+        "Temperature within range",
+        meta_recv,
+    );
+
+    let product = registry.get_product(&product_id);
+    assert_eq!(product.certifications.len(), 2);
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 3);
+}
+
+#[test]
+fn test_food_supply_chain_with_recall() {
+    let env = Env::default();
+    let (_cl, registry, _auth, transfer, tracking) = setup(&env);
+
+    let farmer = Address::generate(&env);
+    let processor = Address::generate(&env);
+    let distributor = Address::generate(&env);
+
+    let product_id = register_product(
+        &env,
+        &registry,
+        &farmer,
+        "BEEF-BATCH-001",
+        "Organic Beef",
+        "Food",
+    );
+
+    add_event(
+        &env,
+        &tracking,
+        &farmer,
+        &product_id,
+        "harvested",
+        "Farm Location",
+        "Organic certified",
+    );
+    transfer.transfer_product(&farmer, &product_id, &processor);
+
+    add_event(
+        &env,
+        &tracking,
+        &processor,
+        &product_id,
+        "processed",
+        "Processing Plant",
+        "USDA inspection passed",
+    );
+
+    transfer.transfer_product(&processor, &product_id, &distributor);
+    add_event(
+        &env,
+        &tracking,
+        &distributor,
+        &product_id,
+        "shipped",
+        "Distribution Center",
+        "Refrigerated transport",
+    );
+
+    add_event(
+        &env,
+        &tracking,
+        &distributor,
+        &product_id,
+        "recalled",
+        "Distribution Center",
+        "Contamination detected in batch",
+    );
+
+    registry.deactivate_product(
+        &distributor,
+        &product_id,
+        &String::from_str(&env, "Product recall contamination"),
+    );
+
+    let product = registry.get_product(&product_id);
+    assert!(!product.active);
+
+    let result = tracking.try_tracking_add_event(
+        &distributor,
+        &product_id,
+        &Symbol::new(&env, "disposed"),
+        &String::from_str(&env, "Disposal Site"),
+        &BytesN::from_array(&env, &[0; 32]),
+        &String::from_str(&env, "Safely disposed"),
+        &Map::new(&env),
+    );
+    assert!(result.is_ok());
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 5);
+}
+
+#[test]
+fn test_multi_product_batch_operations() {
+    let env = Env::default();
+    let (_cl, registry, _auth, transfer, tracking) = setup(&env);
+
+    let manufacturer = Address::generate(&env);
+    let distributor = Address::generate(&env);
+
+    let product1 = register_product(
+        &env,
+        &registry,
+        &manufacturer,
+        "PROD-001",
+        "Product 1",
+        "Electronics",
+    );
+    let product2 = register_product(
+        &env,
+        &registry,
+        &manufacturer,
+        "PROD-002",
+        "Product 2",
+        "Electronics",
+    );
+    let product3 = register_product(
+        &env,
+        &registry,
+        &manufacturer,
+        "PROD-003",
+        "Product 3",
+        "Electronics",
+    );
+
+    for product_id in [&product1, &product2, &product3] {
+        add_event(
+            &env,
+            &tracking,
+            &manufacturer,
+            product_id,
+            "manufactured",
+            "Factory",
+            "Batch production",
+        );
+    }
+
+    let mut batch = Vec::new(&env);
+    batch.push_back(product1.clone());
+    batch.push_back(product2.clone());
+    batch.push_back(product3.clone());
+
+    let transferred = transfer.batch_transfer_products(&manufacturer, &batch, &distributor);
+    assert_eq!(transferred, 3);
+
+    for product_id in [&product1, &product2, &product3] {
+        let product = registry.get_product(product_id);
+        assert_eq!(product.owner, distributor);
+    }
+
+    let stats = registry.get_stats();
+    assert_eq!(stats.total_products, 3);
+    assert_eq!(stats.active_products, 3);
+}
+
+#[test]
+fn test_authorized_actor_workflow() {
+    let env = Env::default();
+    let (_cl, registry, auth, _transfer, tracking) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let logistics_partner = Address::generate(&env);
+    let warehouse = Address::generate(&env);
+
+    let product_id = register_product(&env, &registry, &owner, "PROD-001", "Test Product", "Other");
+
+    auth.add_authorized_actor(&owner, &product_id, &logistics_partner);
+    auth.add_authorized_actor(&owner, &product_id, &warehouse);
+
+    assert!(auth.is_authorized(&product_id, &logistics_partner));
+    assert!(auth.is_authorized(&product_id, &warehouse));
+
+    add_event(
+        &env,
+        &tracking,
+        &logistics_partner,
+        &product_id,
+        "shipped",
+        "Logistics Hub",
+        "In transit",
+    );
+    add_event(
+        &env,
+        &tracking,
+        &warehouse,
+        &product_id,
+        "received",
+        "Warehouse A",
+        "Stored safely",
+    );
+
+    auth.remove_authorized_actor(&owner, &product_id, &logistics_partner);
+
+    assert!(!auth.is_authorized(&product_id, &logistics_partner));
+    assert!(auth.is_authorized(&product_id, &warehouse));
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 2);
+}
+
+// --- Additional end-to-end scenario tests (Issue #286) --------------------
+
+#[test]
+fn test_unauthorized_actor_rejected() {
+    let env = Env::default();
+    let (_cl, registry, _auth, transfer, tracking) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let unauthorized = Address::generate(&env);
+
+    let product_id = register_product(
+        &env,
+        &registry,
+        &owner,
+        "SEC-001",
+        "Security Test Product",
+        "Other",
+    );
+
+    let event_result = tracking.try_tracking_add_event(
+        &unauthorized,
+        &product_id,
+        &Symbol::new(&env, "shipped"),
+        &String::from_str(&env, "Unknown Location"),
+        &BytesN::from_array(&env, &[0; 32]),
+        &String::from_str(&env, "Unauthorized attempt"),
+        &Map::new(&env),
+    );
+    assert!(event_result.is_ok());
+
+    let transfer_result = transfer.try_transfer_product(&unauthorized, &product_id, &unauthorized);
+    assert!(transfer_result.is_err());
+
+    let product = registry.get_product(&product_id);
+    assert_eq!(product.owner, owner);
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 1);
+}
+
+#[test]
+fn test_luxury_goods_full_supply_chain() {
+    let env = Env::default();
+    let (_cl, registry, auth, transfer, tracking) = setup(&env);
+
+    let manufacturer = Address::generate(&env);
+    let customs_agent = Address::generate(&env);
+    let retailer = Address::generate(&env);
+    let end_consumer = Address::generate(&env);
+
+    let product_id = String::from_str(&env, "LUXURY-BAG-001");
+    let mut certs: Vec<BytesN<32>> = Vec::new(&env);
+    certs.push_back(BytesN::from_array(&env, &[0xA1u8; 32]));
+    certs.push_back(BytesN::from_array(&env, &[0xA2u8; 32]));
+
+    registry.register_product(
+        &manufacturer,
+        &ProductConfig {
+            id: product_id.clone(),
+            name: String::from_str(&env, "Designer Handbag"),
+            description: String::from_str(&env, "Certified luxury handbag"),
+            origin_location: String::from_str(&env, "Milan Italy"),
+            category: String::from_str(&env, "Luxury"),
+            tags: Vec::new(&env),
+            certifications: certs,
+            media_hashes: Vec::new(&env),
+            custom: Map::new(&env),
+        },
+    );
+
+    auth.add_authorized_actor(&manufacturer, &product_id, &customs_agent);
+
+    add_event(
+        &env,
+        &tracking,
+        &manufacturer,
+        &product_id,
+        "manufactured",
+        "Milan Factory",
+        "Serial number engraved",
+    );
+    add_event(
+        &env,
+        &tracking,
+        &customs_agent,
+        &product_id,
+        "inspected",
+        "Milan Customs",
+        "Export clearance granted",
+    );
+
+    transfer.transfer_product(&manufacturer, &product_id, &retailer);
+    let product_mid = registry.get_product(&product_id);
+    assert_eq!(product_mid.owner, retailer);
+
+    add_event(
+        &env,
+        &tracking,
+        &retailer,
+        &product_id,
+        "received",
+        "Paris Boutique",
+        "Inventory updated",
+    );
+
+    transfer.transfer_product(&retailer, &product_id, &end_consumer);
+
+    let final_product = registry.get_product(&product_id);
+    assert_eq!(final_product.owner, end_consumer);
+    assert_eq!(final_product.certifications.len(), 2);
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 3);
+}
+
+#[test]
+fn test_duplicate_product_id_rejected() {
+    let env = Env::default();
+    let (_cl, registry, _auth, _transfer, _tracking) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let product_id = register_product(
+        &env,
+        &registry,
+        &owner,
+        "DUP-001",
+        "Original Product",
+        "Other",
+    );
+
+    let result = registry.try_register_product(
+        &owner,
+        &ProductConfig {
+            id: product_id.clone(),
+            name: String::from_str(&env, "Duplicate Product"),
+            description: String::from_str(&env, "Should fail"),
+            origin_location: String::from_str(&env, "Nowhere"),
+            category: String::from_str(&env, "Test"),
+            tags: Vec::new(&env),
+            certifications: Vec::new(&env),
+            media_hashes: Vec::new(&env),
+            custom: Map::new(&env),
+        },
+    );
+
+    assert!(result.is_err());
+}
+
+#[test]
+fn test_event_ordering_and_metadata_integrity() {
+    let env = Env::default();
+    let (_cl, registry, auth, transfer, tracking) = setup(&env);
+
+    let supplier = Address::generate(&env);
+    let carrier = Address::generate(&env);
+    let receiver = Address::generate(&env);
+
+    let product_id = register_product(
+        &env,
+        &registry,
+        &supplier,
+        "META-001",
+        "Metadata Test Product",
+        "Industrial",
+    );
+
+    auth.add_authorized_actor(&supplier, &product_id, &carrier);
+
+    let mut meta1: Map<Symbol, String> = Map::new(&env);
+    meta1.set(Symbol::new(&env, "weight"), String::from_str(&env, "12kg"));
+    let event_id_1 = add_event_with_metadata(
+        &env,
+        &tracking,
+        &supplier,
+        &product_id,
+        "shipped",
+        "Supplier Warehouse",
+        "Shipped to carrier",
+        meta1,
+    );
+
+    let mut meta2: Map<Symbol, String> = Map::new(&env);
+    meta2.set(Symbol::new(&env, "hub"), String::from_str(&env, "Paris"));
+    let event_id_2 = add_event_with_metadata(
+        &env,
+        &tracking,
+        &carrier,
+        &product_id,
+        "checkpoint",
+        "Paris Hub",
+        "In transit",
+        meta2,
+    );
+
+    transfer.transfer_product(&supplier, &product_id, &receiver);
+
+    let event_id_3 = add_event(
+        &env,
+        &tracking,
+        &receiver,
+        &product_id,
+        "received",
+        "Receiver Dock",
+        "Delivery confirmed",
+    );
+
+    assert!(event_id_1 < event_id_2);
+    assert!(event_id_2 < event_id_3);
+
+    let event_count = tracking.tracking_get_event_count(&product_id);
+    assert_eq!(event_count, 3);
+
+    let product = registry.get_product(&product_id);
+    assert_eq!(product.owner, receiver);
+}
diff --git a/smart-contract/contracts/src/test_auth.rs b/smart-contract/contracts/src/test_auth.rs
new file mode 100644
index 00000000..0482f5f7
--- /dev/null
+++ b/smart-contract/contracts/src/test_auth.rs
@@ -0,0 +1,241 @@
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, ChainLogisticsContract,
+    ChainLogisticsContractClient, Error, ProductConfig, ProductRegistryContract,
+    ProductRegistryContractClient,
+};
+use soroban_sdk::{
+    symbol_short, testutils::Address as _, Address, BytesN, Env, Map, String, Symbol, Vec,
+};
+
+fn setup(
+    env: &Env,
+) -> (
+    ChainLogisticsContractClient<'_>,
+    ProductRegistryContractClient<'_>,
+    AuthorizationContractClient<'_>,
+    Address,
+    Address,
+    Address,
+) {
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let pr_id = env.register_contract(None, ProductRegistryContract);
+
+    let cl_client = ChainLogisticsContractClient::new(env, &cl_id);
+    let pr_client = ProductRegistryContractClient::new(env, &pr_id);
+    let auth_client = AuthorizationContractClient::new(env, &auth_id);
+
+    let admin = Address::generate(env);
+    cl_client.init(&admin, &auth_id);
+
+    auth_client.configure_initializer(&pr_id);
+    pr_client.configure_auth_contract(&auth_id);
+
+    (cl_client, pr_client, auth_client, admin, pr_id, auth_id)
+}
+
+fn create_test_product(
+    env: &Env,
+    pr_client: &ProductRegistryContractClient,
+    owner: &Address,
+) -> String {
+    let id = String::from_str(env, "PROD1");
+    pr_client.register_product(
+        owner,
+        &ProductConfig {
+            id: id.clone(),
+            name: String::from_str(env, "Test Product"),
+            description: String::from_str(env, "Description"),
+            origin_location: String::from_str(env, "Origin"),
+            category: String::from_str(env, "Category"),
+            tags: Vec::new(env),
+            certifications: Vec::new(env),
+            media_hashes: Vec::new(env),
+            custom: Map::new(env),
+        },
+    );
+    id
+}
+
+#[test]
+fn test_registration_and_stats() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let (_cl_client, pr_client, _auth_client, _admin, _pr_id, _auth_id) = setup(&env);
+    let owner = Address::generate(&env);
+
+    let stats_before = pr_client.get_stats();
+    assert_eq!(stats_before.total_products, 0);
+
+    let id = create_test_product(&env, &pr_client, &owner);
+    let product = pr_client.get_product(&id);
+
+    assert_eq!(product.id, id);
+    assert_eq!(product.owner, owner);
+
+    let stats_after = pr_client.get_stats();
+    assert_eq!(stats_after.total_products, 1);
+}
+
+#[test]
+fn test_authorization_contract_flow() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let (_cl_client, pr_client, auth_client, _admin, pr_id, _auth_id) = setup(&env);
+    let owner = Address::generate(&env);
+    let actor = Address::generate(&env);
+
+    let product_id = create_test_product(&env, &pr_client, &owner);
+
+    // Check initial auth — owner is authorized via ProductRegistryContract's set_auth call
+    // Note: auth_client is a separate contract, so owner init happens through CL init_product_owner
+    // For this test we directly test the AuthorizationContract
+    assert!(auth_client.is_authorized(&product_id, &owner));
+    assert!(!auth_client.is_authorized(&product_id, &actor));
+
+    // Grant
+    auth_client.add_authorized_actor(&owner, &product_id, &actor);
+    assert!(auth_client.is_authorized(&product_id, &actor));
+
+    // Revoke
+    auth_client.remove_authorized_actor(&owner, &product_id, &actor);
+    assert!(!auth_client.is_authorized(&product_id, &actor));
+}
+
+#[test]
+fn test_product_lifecycle() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let (_cl_client, pr_client, _auth_client, _admin, _pr_id, _auth_id) = setup(&env);
+    let owner = Address::generate(&env);
+
+    let id = create_test_product(&env, &pr_client, &owner);
+
+    // Deactivate
+    pr_client.deactivate_product(&owner, &id, &String::from_str(&env, "Testing"));
+    let p = pr_client.get_product(&id);
+    assert!(!p.active);
+
+    // Reactivate
+    pr_client.reactivate_product(&owner, &id);
+    let p = pr_client.get_product(&id);
+    assert!(p.active);
+}
+
+#[test]
+fn test_auth_initializer_not_configured_rejects_init_owner() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let caller = Address::generate(&env);
+    let owner = Address::generate(&env);
+    let product_id = String::from_str(&env, "PROD-NOINIT");
+
+    let res = auth_client.try_init_product_owner(&caller, &product_id, &owner);
+    assert_eq!(res, Err(Ok(Error::NotInitialized)));
+}
+
+#[test]
+fn test_auth_configure_initializer_rejects_different_second_initializer() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let first = Address::generate(&env);
+    let second = Address::generate(&env);
+
+    auth_client.configure_initializer(&first);
+    let res = auth_client.try_configure_initializer(&second);
+    assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+}
+
+#[test]
+fn test_auth_init_product_owner_rejects_duplicate_id() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let initializer = Address::generate(&env);
+    let owner_a = Address::generate(&env);
+    let owner_b = Address::generate(&env);
+    let product_id = String::from_str(&env, "PROD-DUPE");
+
+    auth_client.configure_initializer(&initializer);
+    auth_client.init_product_owner(&initializer, &product_id, &owner_a);
+
+    let res = auth_client.try_init_product_owner(&initializer, &product_id, &owner_b);
+    assert_eq!(res, Err(Ok(Error::ProductAlreadyExists)));
+}
+
+#[test]
+fn test_auth_update_owner_requires_current_owner() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let initializer = Address::generate(&env);
+    let owner = Address::generate(&env);
+    let attacker = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+    let product_id = String::from_str(&env, "PROD-UPD");
+
+    auth_client.configure_initializer(&initializer);
+    auth_client.init_product_owner(&initializer, &product_id, &owner);
+
+    let res = auth_client.try_update_product_owner(&attacker, &product_id, &new_owner);
+    assert_eq!(res, Err(Ok(Error::Unauthorized)));
+}
+
+#[test]
+fn test_auth_add_remove_actor_nonexistent_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let owner = Address::generate(&env);
+    let actor = Address::generate(&env);
+    let missing = String::from_str(&env, "PROD-MISSING");
+
+    let add_res = auth_client.try_add_authorized_actor(&owner, &missing, &actor);
+    assert_eq!(add_res, Err(Ok(Error::ProductNotFound)));
+
+    let remove_res = auth_client.try_remove_authorized_actor(&owner, &missing, &actor);
+    assert_eq!(remove_res, Err(Ok(Error::ProductNotFound)));
+}
+
+#[test]
+fn test_auth_old_owner_loses_actor_management_after_transfer() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let initializer = Address::generate(&env);
+    let old_owner = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+    let actor = Address::generate(&env);
+    let product_id = String::from_str(&env, "PROD-XFER-AUTH");
+
+    auth_client.configure_initializer(&initializer);
+    auth_client.init_product_owner(&initializer, &product_id, &old_owner);
+    auth_client.update_product_owner(&old_owner, &product_id, &new_owner);
+
+    let old_owner_res = auth_client.try_add_authorized_actor(&old_owner, &product_id, &actor);
+    assert_eq!(old_owner_res, Err(Ok(Error::Unauthorized)));
+
+    auth_client.add_authorized_actor(&new_owner, &product_id, &actor);
+    assert!(auth_client.is_authorized(&product_id, &actor));
+}
diff --git a/smart-contract/contracts/src/test_benchmarks.rs b/smart-contract/contracts/src/test_benchmarks.rs
new file mode 100644
index 00000000..098279b4
--- /dev/null
+++ b/smart-contract/contracts/src/test_benchmarks.rs
@@ -0,0 +1,134 @@
+use soroban_sdk::{testutils::Address as _, Address, Env, Map, String, Vec};
+
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, ProductConfig, ProductRegistryContract,
+    ProductRegistryContractClient, ProductTransferContract, ProductTransferContractClient,
+};
+
+// Benchmarks here are deterministic workload benchmarks intended to track
+// relative gas/footprint trends between changes. They are not wall-clock tests.
+
+fn setup(
+    env: &Env,
+) -> (
+    ProductRegistryContractClient<'_>,
+    ProductTransferContractClient<'_>,
+) {
+    env.mock_all_auths();
+    env.budget().reset_unlimited();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let registry_id = env.register_contract(None, ProductRegistryContract);
+    let transfer_id = env.register_contract(None, ProductTransferContract);
+
+    let auth_client = AuthorizationContractClient::new(env, &auth_id);
+    let registry_client = ProductRegistryContractClient::new(env, &registry_id);
+    let transfer_client = ProductTransferContractClient::new(env, &transfer_id);
+
+    auth_client.configure_initializer(&registry_id);
+    registry_client.configure_auth_contract(&auth_id);
+    transfer_client.pt_init(&registry_id, &auth_id);
+
+    (registry_client, transfer_client)
+}
+
+fn register_bulk(
+    env: &Env,
+    registry: &ProductRegistryContractClient,
+    owner: &Address,
+    offset: u32,
+    count: u32,
+) -> Vec<String> {
+    let mut ids = Vec::new(env);
+    for i in 0..count {
+        let idx = (offset + i) % 10_000;
+        let d0 = ((idx / 1000) % 10) as u8;
+        let d1 = ((idx / 100) % 10) as u8;
+        let d2 = ((idx / 10) % 10) as u8;
+        let d3 = (idx % 10) as u8;
+        let id = String::from_bytes(
+            env,
+            &[
+                b'B',
+                b'E',
+                b'N',
+                b'C',
+                b'H',
+                b'-',
+                b'0' + d0,
+                b'0' + d1,
+                b'0' + d2,
+                b'0' + d3,
+            ],
+        );
+        registry.register_product(
+            owner,
+            &ProductConfig {
+                id: id.clone(),
+                name: String::from_str(env, "Bench Product"),
+                description: String::from_str(env, "bench"),
+                origin_location: String::from_str(env, "Nairobi"),
+                category: String::from_str(env, "Food"),
+                tags: Vec::new(env),
+                certifications: Vec::new(env),
+                media_hashes: Vec::new(env),
+                custom: Map::new(env),
+            },
+        );
+        ids.push_back(id);
+    }
+    ids
+}
+
+#[test]
+fn benchmark_registration_scales_to_500_products() {
+    let env = Env::default();
+    let (registry, _transfer) = setup(&env);
+    let owner = Address::generate(&env);
+
+    let sizes = [50u32, 100u32, 250u32, 500u32];
+    let mut base = 0u32;
+    for size in sizes {
+        let ids = register_bulk(&env, &registry, &owner, base, size);
+        assert_eq!(ids.len(), size);
+        base += size;
+    }
+
+    let stats = registry.get_stats();
+    assert_eq!(stats.total_products, 900);
+    assert_eq!(stats.active_products, 900);
+}
+
+#[test]
+#[ignore = "benchmark workload, run manually in performance pipeline"]
+fn benchmark_batch_transfer_chunks_of_100() {
+    let env = Env::default();
+    let (registry, transfer) = setup(&env);
+    let owner = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+
+    let ids = register_bulk(&env, &registry, &owner, 0, 300);
+    let mut moved = 0u32;
+
+    let mut start = 0u32;
+    while start < ids.len() {
+        let end = (start + 100).min(ids.len());
+        let chunk = ids.slice(start..end);
+        moved += transfer.batch_transfer_products(&owner, &chunk, &new_owner);
+        start = end;
+    }
+
+    assert_eq!(moved, 300);
+    assert_eq!(
+        registry
+            .get_product(&String::from_str(&env, "BENCH-0000"))
+            .owner,
+        new_owner
+    );
+    assert_eq!(
+        registry
+            .get_product(&String::from_str(&env, "BENCH-0299"))
+            .owner,
+        new_owner
+    );
+}
diff --git a/smart-contract/contracts/src/test_circuit_breaker.rs b/smart-contract/contracts/src/test_circuit_breaker.rs
new file mode 100644
index 00000000..ec853778
--- /dev/null
+++ b/smart-contract/contracts/src/test_circuit_breaker.rs
@@ -0,0 +1,800 @@
+/// Comprehensive tests for the CircuitBreakerContract.
+#[cfg(test)]
+#[allow(clippy::module_inception)]
+mod test_circuit_breaker {
+    use soroban_sdk::{testutils::Address as _, testutils::Ledger as _, Address, Env, Vec};
+
+    use crate::{
+        circuit_breaker::{CircuitBreakerContract, CircuitBreakerContractClient},
+        error::Error,
+        types::{PauseLevel, PauseReason},
+    };
+
+    // ─── Helpers ─────────────────────────────────────────────────────────────
+
+    fn deploy(env: &Env) -> (CircuitBreakerContractClient<'_>, Address, Vec<Address>) {
+        let id = env.register_contract(None, CircuitBreakerContract);
+        let client = CircuitBreakerContractClient::new(env, &id);
+        let admin = Address::generate(env);
+        let mut guardians = Vec::new(env);
+        guardians.push_back(Address::generate(env));
+        guardians.push_back(Address::generate(env));
+        guardians.push_back(Address::generate(env));
+        client.initialize(&admin, &guardians);
+        (client, admin, guardians)
+    }
+
+    fn guardian(guardians: &Vec<Address>, i: u32) -> Address {
+        guardians.get(i).unwrap()
+    }
+
+    // ─── Initialisation ───────────────────────────────────────────────────────
+
+    #[test]
+    fn test_initialize_sets_admin_and_guardians() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        assert_eq!(client.get_admin(), admin);
+        assert_eq!(client.get_guardians(), guardians);
+        assert!(!client.is_paused());
+    }
+
+    #[test]
+    fn test_initialize_twice_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        let res = client.try_initialize(&admin, &guardians);
+        assert_eq!(res, Err(Ok(Error::CircuitBreakerAlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_initialize_duplicate_guardian_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let id = env.register_contract(None, CircuitBreakerContract);
+        let client = CircuitBreakerContractClient::new(&env, &id);
+        let admin = Address::generate(&env);
+        let g = Address::generate(&env);
+        let mut guardians = Vec::new(&env);
+        guardians.push_back(g.clone());
+        guardians.push_back(g.clone());
+
+        let res = client.try_initialize(&admin, &guardians);
+        assert_eq!(res, Err(Ok(Error::DuplicateGuardian)));
+    }
+
+    #[test]
+    fn test_initialize_too_many_guardians_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let id = env.register_contract(None, CircuitBreakerContract);
+        let client = CircuitBreakerContractClient::new(&env, &id);
+        let admin = Address::generate(&env);
+        let mut guardians = Vec::new(&env);
+        for _ in 0..21 {
+            guardians.push_back(Address::generate(&env));
+        }
+        let res = client.try_initialize(&admin, &guardians);
+        assert_eq!(res, Err(Ok(Error::TooManyGuardians)));
+    }
+
+    // ─── Guardian management ──────────────────────────────────────────────────
+
+    #[test]
+    fn test_add_and_remove_guardian() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, _) = deploy(&env);
+
+        let new_g = Address::generate(&env);
+        client.add_guardian(&admin, &new_g);
+        assert!(client.get_guardians().contains(&new_g));
+
+        client.remove_guardian(&admin, &new_g);
+        assert!(!client.get_guardians().contains(&new_g));
+    }
+
+    #[test]
+    fn test_add_duplicate_guardian_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        let g = guardian(&guardians, 0);
+        let res = client.try_add_guardian(&admin, &g);
+        assert_eq!(res, Err(Ok(Error::DuplicateGuardian)));
+    }
+
+    #[test]
+    fn test_remove_nonexistent_guardian_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, _) = deploy(&env);
+
+        let unknown = Address::generate(&env);
+        let res = client.try_remove_guardian(&admin, &unknown);
+        assert_eq!(res, Err(Ok(Error::NotGuardian)));
+    }
+
+    #[test]
+    fn test_non_admin_cannot_add_guardian() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let attacker = Address::generate(&env);
+        let new_g = Address::generate(&env);
+        let res = client.try_add_guardian(&attacker, &new_g);
+        assert!(res.is_err());
+
+        // Existing guardian also cannot add
+        let res = client.try_add_guardian(&guardian(&guardians, 0), &new_g);
+        assert!(res.is_err());
+    }
+
+    // ─── Instant pause ────────────────────────────────────────────────────────
+
+    #[test]
+    fn test_instant_pause_by_guardian() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g = guardian(&guardians, 0);
+        let record_id = client.instant_pause(
+            &g,
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "Active exploit detected"),
+            &3600,
+        );
+
+        assert_eq!(record_id, 1);
+        assert!(client.is_paused());
+
+        let state = client.get_state();
+        assert!(state.is_paused);
+        assert_eq!(state.level, PauseLevel::Full);
+        assert_eq!(state.current_record_id, 1);
+    }
+
+    #[test]
+    fn test_non_guardian_cannot_instant_pause() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, _) = deploy(&env);
+
+        let attacker = Address::generate(&env);
+        let res = client.try_instant_pause(
+            &attacker,
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+        );
+        assert_eq!(res, Err(Ok(Error::NotGuardian)));
+    }
+
+    #[test]
+    fn test_instant_pause_description_too_long_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        // Build a 257-byte string
+        let long_desc = soroban_sdk::String::from_str(
+            &env,
+            "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA",
+        );
+        let g = guardian(&guardians, 0);
+        let res = client.try_instant_pause(
+            &g,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &long_desc,
+            &0,
+        );
+        assert_eq!(res, Err(Ok(Error::PauseDescriptionTooLong)));
+    }
+
+    #[test]
+    fn test_instant_pause_invalid_duration_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g = guardian(&guardians, 0);
+        // 31 days in seconds — exceeds MAX_PAUSE_DURATION_SECS
+        let too_long: u64 = 31 * 24 * 60 * 60;
+        let res = client.try_instant_pause(
+            &g,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &too_long,
+        );
+        assert_eq!(res, Err(Ok(Error::InvalidPauseDuration)));
+    }
+
+    // ─── Pause levels ─────────────────────────────────────────────────────────
+
+    #[test]
+    fn test_partial_pause_blocks_writes_not_mutations() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Partial,
+            &PauseReason::OracleFailure,
+            &soroban_sdk::String::from_str(&env, "Oracle down"),
+            &0,
+        );
+
+        assert!(!client.check_writes_allowed());
+        assert!(client.check_mutations_allowed());
+        assert!(client.check_reads_allowed());
+    }
+
+    #[test]
+    fn test_full_pause_blocks_writes_and_mutations() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Full,
+            &PauseReason::ContractBug,
+            &soroban_sdk::String::from_str(&env, "Critical bug"),
+            &0,
+        );
+
+        assert!(!client.check_writes_allowed());
+        assert!(!client.check_mutations_allowed());
+        assert!(client.check_reads_allowed());
+    }
+
+    #[test]
+    fn test_emergency_pause_blocks_everything() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Emergency,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "Active exploit"),
+            &0,
+        );
+
+        assert!(!client.check_writes_allowed());
+        assert!(!client.check_mutations_allowed());
+        assert!(!client.check_reads_allowed());
+    }
+
+    #[test]
+    fn test_advisory_pause_blocks_nothing() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Advisory,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "Scheduled maintenance"),
+            &0,
+        );
+
+        // Advisory is paused=true but all checks pass
+        assert!(client.is_paused());
+        assert!(client.check_writes_allowed());
+        assert!(client.check_mutations_allowed());
+        assert!(client.check_reads_allowed());
+    }
+
+    // ─── Lift pause ───────────────────────────────────────────────────────────
+
+    #[test]
+    fn test_admin_can_lift_pause() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+        );
+        assert!(client.is_paused());
+
+        client.lift_pause(&admin);
+        assert!(!client.is_paused());
+        assert!(client.check_writes_allowed());
+        assert!(client.check_mutations_allowed());
+    }
+
+    #[test]
+    fn test_lift_when_not_paused_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, _) = deploy(&env);
+
+        let res = client.try_lift_pause(&admin);
+        assert_eq!(res, Err(Ok(Error::ContractNotPaused)));
+    }
+
+    #[test]
+    fn test_non_admin_cannot_lift_pause() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g = guardian(&guardians, 0);
+        client.instant_pause(
+            &g,
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+        );
+
+        let attacker = Address::generate(&env);
+        let res = client.try_lift_pause(&attacker);
+        assert!(res.is_err());
+    }
+
+    // ─── Pause record ─────────────────────────────────────────────────────────
+
+    #[test]
+    fn test_pause_record_stored_correctly() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g = guardian(&guardians, 0);
+        let record_id = client.instant_pause(
+            &g,
+            &PauseLevel::Full,
+            &PauseReason::RegulatoryAction,
+            &soroban_sdk::String::from_str(&env, "Regulator request"),
+            &7200,
+        );
+
+        let record = client.get_pause_record(&record_id);
+        assert_eq!(record.record_id, record_id);
+        assert_eq!(record.activated_by, g);
+        assert_eq!(record.level, PauseLevel::Full);
+        assert_eq!(record.reason, PauseReason::RegulatoryAction);
+        assert_eq!(record.lifted_at, 0); // not yet lifted
+    }
+
+    #[test]
+    fn test_pause_record_updated_on_lift() {
+        let env = Env::default();
+        env.mock_all_auths();
+        // Set a non-zero starting timestamp so lifted_at is distinguishable from 0
+        env.ledger().set_timestamp(1_000_000);
+        let (client, admin, guardians) = deploy(&env);
+
+        let record_id = client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+        );
+
+        client.lift_pause(&admin);
+
+        let record = client.get_pause_record(&record_id);
+        assert!(record.lifted_at > 0);
+        assert_eq!(record.lifted_by.len(), 1);
+        assert_eq!(record.lifted_by.get(0).unwrap(), admin);
+    }
+
+    #[test]
+    fn test_get_nonexistent_record_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, _) = deploy(&env);
+
+        let res = client.try_get_pause_record(&999);
+        assert_eq!(res, Err(Ok(Error::PauseRecordNotFound)));
+    }
+
+    // ─── Time-limited pauses ──────────────────────────────────────────────────
+
+    #[test]
+    fn test_pause_auto_expires() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        // Pause for 100 seconds
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Full,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "Short maintenance"),
+            &100,
+        );
+        assert!(client.is_paused());
+
+        // Advance ledger time past expiry
+        env.ledger().set_timestamp(env.ledger().timestamp() + 101);
+
+        // get_state should auto-expire
+        let state = client.get_state();
+        assert!(!state.is_paused);
+        assert!(!client.is_paused());
+        assert!(client.check_writes_allowed());
+    }
+
+    #[test]
+    fn test_pause_with_zero_duration_does_not_expire() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "Indefinite"),
+            &0, // no expiry
+        );
+
+        // Advance time significantly
+        env.ledger()
+            .set_timestamp(env.ledger().timestamp() + 999_999);
+
+        assert!(client.is_paused());
+    }
+
+    // ─── Multi-authority pause ────────────────────────────────────────────────
+
+    #[test]
+    fn test_propose_approve_execute_pause() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+        let g1 = guardian(&guardians, 1);
+        let g2 = guardian(&guardians, 2);
+
+        // Propose requiring 2 approvals
+        let approval_id = client.propose_pause(
+            &g0,
+            &PauseLevel::Partial,
+            &PauseReason::MarketVolatility,
+            &soroban_sdk::String::from_str(&env, "Market crash"),
+            &3600,
+            &2,
+            &0,
+        );
+
+        // g0 already voted; g1 approves
+        client.approve_pause_proposal(&g1, &approval_id);
+
+        // Threshold reached — execute
+        let record_id = client.execute_pause_proposal(&g2, &approval_id, &3600);
+
+        assert!(client.is_paused());
+        let state = client.get_state();
+        assert_eq!(state.level, PauseLevel::Partial);
+        assert_eq!(state.current_record_id, record_id);
+    }
+
+    #[test]
+    fn test_execute_proposal_below_threshold_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+
+        // Propose requiring 3 approvals — only proposer has voted
+        let approval_id = client.propose_pause(
+            &g0,
+            &PauseLevel::Full,
+            &PauseReason::ContractBug,
+            &soroban_sdk::String::from_str(&env, "Bug found"),
+            &0,
+            &3,
+            &0,
+        );
+
+        let res = client.try_execute_pause_proposal(&g0, &approval_id, &0);
+        assert_eq!(res, Err(Ok(Error::ApprovalThresholdNotReached)));
+    }
+
+    #[test]
+    fn test_double_vote_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+        let g1 = guardian(&guardians, 1);
+
+        let approval_id = client.propose_pause(
+            &g0,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+            &2,
+            &0,
+        );
+
+        client.approve_pause_proposal(&g1, &approval_id);
+
+        // g1 tries to vote again
+        let res = client.try_approve_pause_proposal(&g1, &approval_id);
+        assert_eq!(res, Err(Ok(Error::ApprovalAlreadyVoted)));
+    }
+
+    #[test]
+    fn test_execute_already_executed_proposal_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+        let g1 = guardian(&guardians, 1);
+
+        let approval_id = client.propose_pause(
+            &g0,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+            &2,
+            &0,
+        );
+        client.approve_pause_proposal(&g1, &approval_id);
+        client.execute_pause_proposal(&g0, &approval_id, &0);
+
+        // Try to execute again
+        let res = client.try_execute_pause_proposal(&g0, &approval_id, &0);
+        assert_eq!(res, Err(Ok(Error::ApprovalAlreadyExecuted)));
+    }
+
+    #[test]
+    fn test_proposal_expires() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+        let g1 = guardian(&guardians, 1);
+
+        // Proposal window of 60 seconds
+        let approval_id = client.propose_pause(
+            &g0,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+            &2,
+            &60,
+        );
+
+        // Advance past window
+        env.ledger().set_timestamp(env.ledger().timestamp() + 61);
+
+        let res = client.try_approve_pause_proposal(&g1, &approval_id);
+        assert_eq!(res, Err(Ok(Error::ApprovalExpired)));
+    }
+
+    #[test]
+    fn test_non_guardian_cannot_propose() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, _) = deploy(&env);
+
+        let attacker = Address::generate(&env);
+        let res = client.try_propose_pause(
+            &attacker,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+            &1,
+            &0,
+        );
+        assert_eq!(res, Err(Ok(Error::NotGuardian)));
+    }
+
+    #[test]
+    fn test_invalid_threshold_in_proposal_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+
+        // Threshold 0
+        let res = client.try_propose_pause(
+            &g0,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+            &0,
+            &0,
+        );
+        assert_eq!(res, Err(Ok(Error::InvalidThreshold)));
+
+        // Threshold > number of guardians (3)
+        let res = client.try_propose_pause(
+            &g0,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "test"),
+            &0,
+            &4,
+            &0,
+        );
+        assert_eq!(res, Err(Ok(Error::InvalidThreshold)));
+    }
+
+    // ─── Pause record retrieval ───────────────────────────────────────────────
+
+    #[test]
+    fn test_multiple_pause_records_sequential_ids() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        let g = guardian(&guardians, 0);
+
+        let id1 = client.instant_pause(
+            &g,
+            &PauseLevel::Partial,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "First"),
+            &0,
+        );
+        client.lift_pause(&admin);
+
+        let id2 = client.instant_pause(
+            &g,
+            &PauseLevel::Full,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "Second"),
+            &0,
+        );
+        client.lift_pause(&admin);
+
+        assert_eq!(id1, 1);
+        assert_eq!(id2, 2);
+
+        let r1 = client.get_pause_record(&id1);
+        let r2 = client.get_pause_record(&id2);
+        assert_eq!(r1.level, PauseLevel::Partial);
+        assert_eq!(r2.level, PauseLevel::Full);
+    }
+
+    // ─── Supply chain scenario tests ─────────────────────────────────────────
+
+    #[test]
+    fn test_security_breach_scenario() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        // Security team detects exploit — instant Emergency pause
+        let g = guardian(&guardians, 0);
+        client.instant_pause(
+            &g,
+            &PauseLevel::Emergency,
+            &PauseReason::SecurityBreach,
+            &soroban_sdk::String::from_str(&env, "Active exploit on register_product"),
+            &0,
+        );
+
+        // All operations blocked
+        assert!(!client.check_writes_allowed());
+        assert!(!client.check_mutations_allowed());
+        assert!(!client.check_reads_allowed());
+
+        // After investigation, admin lifts
+        client.lift_pause(&admin);
+        assert!(!client.is_paused());
+        assert!(client.check_reads_allowed());
+    }
+
+    #[test]
+    fn test_oracle_failure_scenario() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, admin, guardians) = deploy(&env);
+
+        // Oracle fails — Partial pause (reads still work)
+        let g = guardian(&guardians, 1);
+        client.instant_pause(
+            &g,
+            &PauseLevel::Partial,
+            &PauseReason::OracleFailure,
+            &soroban_sdk::String::from_str(&env, "Temperature oracle unreachable"),
+            &1800, // 30 min auto-expiry
+        );
+
+        assert!(!client.check_writes_allowed());
+        assert!(client.check_reads_allowed());
+
+        // Oracle recovers — admin lifts early
+        client.lift_pause(&admin);
+        assert!(client.check_writes_allowed());
+    }
+
+    #[test]
+    fn test_regulatory_action_multi_authority_scenario() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        let g0 = guardian(&guardians, 0);
+        let g1 = guardian(&guardians, 1);
+        let g2 = guardian(&guardians, 2);
+
+        // Regulatory pause requires 2-of-3 guardian consensus
+        let approval_id = client.propose_pause(
+            &g0,
+            &PauseLevel::Full,
+            &PauseReason::RegulatoryAction,
+            &soroban_sdk::String::from_str(&env, "Regulator freeze order"),
+            &0,
+            &2,
+            &86400, // 24h approval window
+        );
+
+        // Second guardian approves
+        client.approve_pause_proposal(&g1, &approval_id);
+
+        // Third guardian executes
+        client.execute_pause_proposal(&g2, &approval_id, &0);
+
+        assert!(client.is_paused());
+        let state = client.get_state();
+        assert_eq!(state.level, PauseLevel::Full);
+        assert_eq!(state.expires_at, 0); // indefinite
+    }
+
+    #[test]
+    fn test_maintenance_window_auto_expires() {
+        let env = Env::default();
+        env.mock_all_auths();
+        let (client, _, guardians) = deploy(&env);
+
+        // Scheduled maintenance — 2 hour window
+        client.instant_pause(
+            &guardian(&guardians, 0),
+            &PauseLevel::Full,
+            &PauseReason::Maintenance,
+            &soroban_sdk::String::from_str(&env, "Scheduled DB migration"),
+            &7200,
+        );
+
+        assert!(client.is_paused());
+
+        // Maintenance completes — advance past window
+        env.ledger().set_timestamp(env.ledger().timestamp() + 7201);
+
+        assert!(!client.is_paused());
+        assert!(client.check_writes_allowed());
+        assert!(client.check_mutations_allowed());
+    }
+}
diff --git a/smart-contract/contracts/src/test_error_coverage.rs b/smart-contract/contracts/src/test_error_coverage.rs
new file mode 100644
index 00000000..17c2655e
--- /dev/null
+++ b/smart-contract/contracts/src/test_error_coverage.rs
@@ -0,0 +1,225 @@
+use soroban_sdk::{testutils::Address as _, Address, Env, String, Symbol, Vec};
+
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, ChainLogisticsContract,
+    ChainLogisticsContractClient, Error, Origin, Product,
+};
+
+#[test]
+fn test_chainlogistics_init_and_pause_error_paths() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+
+    let admin = Address::generate(&env);
+    let attacker = Address::generate(&env);
+
+    cl_client.init(&admin, &auth_id);
+
+    let second_init = cl_client.try_init(&admin, &auth_id);
+    assert_eq!(second_init, Err(Ok(Error::AlreadyInitialized)));
+
+    let unauthorized_pause = cl_client.try_pause(&attacker);
+    assert_eq!(unauthorized_pause, Err(Ok(Error::Unauthorized)));
+
+    cl_client.pause(&admin);
+
+    let double_pause = cl_client.try_pause(&admin);
+    assert_eq!(double_pause, Err(Ok(Error::ContractPaused)));
+
+    cl_client.unpause(&admin);
+
+    let double_unpause = cl_client.try_unpause(&admin);
+    assert_eq!(double_unpause, Err(Ok(Error::ContractNotPaused)));
+}
+
+#[test]
+fn test_chainlogistics_missing_product_and_event_errors() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+
+    let admin = Address::generate(&env);
+    cl_client.init(&admin, &auth_id);
+
+    let missing_product = String::from_str(&env, "MISSING-PROD");
+    let missing_event_ids = cl_client.try_get_product_event_ids(&missing_product);
+    assert_eq!(missing_event_ids, Err(Ok(Error::ProductNotFound)));
+
+    let missing_count = cl_client.try_get_product_events(&missing_product, &0u64, &10u64);
+    assert_eq!(missing_count, Err(Ok(Error::ProductNotFound)));
+
+    let missing_event = cl_client.try_get_event(&999u64);
+    assert_eq!(missing_event, Err(Ok(Error::EventNotFound)));
+}
+
+#[test]
+fn test_authorization_core_error_paths() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let initializer = Address::generate(&env);
+    let bad_initializer = Address::generate(&env);
+    let owner = Address::generate(&env);
+    let actor = Address::generate(&env);
+    let product_id = String::from_str(&env, "AUTH-ERR-001");
+    let missing_id = String::from_str(&env, "AUTH-ERR-404");
+
+    let uninitialized_owner_set =
+        auth_client.try_init_product_owner(&initializer, &product_id, &owner);
+    assert_eq!(uninitialized_owner_set, Err(Ok(Error::NotInitialized)));
+
+    auth_client.configure_initializer(&initializer);
+
+    let wrong_initializer_owner_set =
+        auth_client.try_init_product_owner(&bad_initializer, &product_id, &owner);
+    assert_eq!(wrong_initializer_owner_set, Err(Ok(Error::Unauthorized)));
+
+    auth_client.init_product_owner(&initializer, &product_id, &owner);
+
+    let duplicate_owner_set = auth_client.try_init_product_owner(&initializer, &product_id, &owner);
+    assert_eq!(duplicate_owner_set, Err(Ok(Error::ProductAlreadyExists)));
+
+    let missing_auth_check = auth_client.try_is_authorized(&missing_id, &actor);
+    assert_eq!(missing_auth_check, Err(Ok(Error::ProductNotFound)));
+
+    let missing_remove = auth_client.try_remove_authorized_actor(&owner, &missing_id, &actor);
+    assert_eq!(missing_remove, Err(Ok(Error::ProductNotFound)));
+}
+
+#[test]
+fn test_pause_contract_rejects_tracking_calls() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+    let auth_client = AuthorizationContractClient::new(&env, &auth_id);
+
+    let admin = Address::generate(&env);
+    let actor = Address::generate(&env);
+    let product_id = String::from_str(&env, "P-NO-STORAGE");
+
+    cl_client.init(&admin, &auth_id);
+    auth_client.configure_initializer(&cl_id);
+    auth_client.init_product_owner(&cl_id, &product_id, &actor);
+
+    cl_client.pause(&admin);
+
+    let res = cl_client.try_add_tracking_event(
+        &actor,
+        &product_id,
+        &Symbol::new(&env, "SHIP"),
+        &String::from_str(&env, "Lagos"),
+        &soroban_sdk::BytesN::from_array(&env, &[0; 32]),
+        &String::from_str(&env, "paused check"),
+        &soroban_sdk::Map::new(&env),
+    );
+    assert_eq!(res, Err(Ok(Error::ContractPaused)));
+}
+
+#[test]
+fn test_product_event_ids_pagination_and_count() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+
+    let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+
+    let admin = Address::generate(&env);
+    let owner = Address::generate(&env);
+    let product_id = String::from_str(&env, "P-PAGED-001");
+
+    cl_client.init(&admin, &auth_id);
+
+    env.as_contract(&cl_id, || {
+        crate::storage::put_product(
+            &env,
+            &Product {
+                id: product_id.clone(),
+                name: String::from_str(&env, "Paged Product"),
+                description: String::from_str(&env, "pagination coverage"),
+                origin: Origin {
+                    location: String::from_str(&env, "Accra"),
+                },
+                owner: owner.clone(),
+                created_at: env.ledger().timestamp(),
+                active: true,
+                category: String::from_str(&env, "Coffee"),
+                tags: Vec::new(&env),
+                certifications: Vec::new(&env),
+                media_hashes: Vec::new(&env),
+                custom: soroban_sdk::Map::new(&env),
+                deactivation_info: Vec::new(&env),
+            },
+        );
+
+        let mut ids = Vec::new(&env);
+        for i in 1..=120u64 {
+            ids.push_back(i);
+        }
+        crate::storage::put_product_event_ids(&env, &product_id, &ids);
+    });
+
+    let count = cl_client.get_product_event_count(&product_id);
+    assert_eq!(count, 120);
+
+    let all_ids = cl_client.get_product_event_ids(&product_id);
+    assert_eq!(all_ids.len(), 120);
+    assert_eq!(all_ids.get(0), Some(1));
+    assert_eq!(all_ids.get(119), Some(120));
+
+    let first_page = cl_client.get_product_event_ids_paginated(&product_id, &0, &20);
+    assert_eq!(first_page.len(), 20);
+    assert_eq!(first_page.get(0), Some(1));
+    assert_eq!(first_page.get(19), Some(20));
+
+    let second_page = cl_client.get_product_event_ids_paginated(&product_id, &20, &20);
+    assert_eq!(second_page.len(), 20);
+    assert_eq!(second_page.get(0), Some(21));
+    assert_eq!(second_page.get(19), Some(40));
+
+    let capped_page = cl_client.get_product_event_ids_paginated(&product_id, &0, &500);
+    assert_eq!(capped_page.len(), 100);
+    assert_eq!(capped_page.get(0), Some(1));
+    assert_eq!(capped_page.get(99), Some(100));
+
+    let zero_limit = cl_client.get_product_event_ids_paginated(&product_id, &0, &0);
+    assert_eq!(zero_limit.len(), 0);
+
+    let out_of_range = cl_client.get_product_event_ids_paginated(&product_id, &120, &10);
+    assert_eq!(out_of_range.len(), 0);
+}
+
+#[test]
+fn test_product_event_ids_pagination_and_count_missing_product() {
+    let env = Env::default();
+    env.mock_all_auths();
+
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let cl_id = env.register_contract(None, ChainLogisticsContract);
+    let cl_client = ChainLogisticsContractClient::new(&env, &cl_id);
+
+    let admin = Address::generate(&env);
+    let missing_product = String::from_str(&env, "MISSING-PAGED");
+
+    cl_client.init(&admin, &auth_id);
+
+    let paged = cl_client.try_get_product_event_ids_paginated(&missing_product, &0, &10);
+    assert_eq!(paged, Err(Ok(Error::ProductNotFound)));
+
+    let count = cl_client.try_get_product_event_count(&missing_product);
+    assert_eq!(count, Err(Ok(Error::ProductNotFound)));
+}
diff --git a/smart-contract/contracts/src/test_integration.rs b/smart-contract/contracts/src/test_integration.rs
new file mode 100644
index 00000000..ffbe2bc7
--- /dev/null
+++ b/smart-contract/contracts/src/test_integration.rs
@@ -0,0 +1,133 @@
+use soroban_sdk::{testutils::Address as _, Address, Env, Map, String, Vec};
+
+use crate::{
+    AuthorizationContract, AuthorizationContractClient, Error, ProductConfig,
+    ProductRegistryContract, ProductRegistryContractClient, ProductTransferContract,
+    ProductTransferContractClient,
+};
+
+fn setup(
+    env: &Env,
+) -> (
+    ProductRegistryContractClient<'_>,
+    AuthorizationContractClient<'_>,
+    ProductTransferContractClient<'_>,
+) {
+    let auth_id = env.register_contract(None, AuthorizationContract);
+    let registry_id = env.register_contract(None, ProductRegistryContract);
+    let transfer_id = env.register_contract(None, ProductTransferContract);
+
+    let auth_client = AuthorizationContractClient::new(env, &auth_id);
+    let registry_client = ProductRegistryContractClient::new(env, &registry_id);
+    let transfer_client = ProductTransferContractClient::new(env, &transfer_id);
+
+    auth_client.configure_initializer(&registry_id);
+    registry_client.configure_auth_contract(&auth_id);
+    transfer_client.pt_init(&registry_id, &auth_id);
+
+    (registry_client, auth_client, transfer_client)
+}
+
+fn register_product(
+    env: &Env,
+    registry: &ProductRegistryContractClient,
+    owner: &Address,
+    id: &str,
+) -> String {
+    let product_id = String::from_str(env, id);
+    registry.register_product(
+        owner,
+        &ProductConfig {
+            id: product_id.clone(),
+            name: String::from_str(env, "Integration Product"),
+            description: String::from_str(env, "integration path"),
+            origin_location: String::from_str(env, "Accra"),
+            category: String::from_str(env, "Coffee"),
+            tags: Vec::new(env),
+            certifications: Vec::new(env),
+            media_hashes: Vec::new(env),
+            custom: Map::new(env),
+        },
+    );
+    product_id
+}
+
+#[test]
+fn test_transfer_updates_registry_and_authorization_state() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let (registry, auth, transfer) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+    let actor = Address::generate(&env);
+    let id = register_product(&env, &registry, &owner, "INTEG-001");
+
+    auth.add_authorized_actor(&owner, &id, &actor);
+    assert!(auth.is_authorized(&id, &owner));
+    assert!(auth.is_authorized(&id, &actor));
+
+    transfer.transfer_product(&owner, &id, &new_owner);
+
+    let p = registry.get_product(&id);
+    assert_eq!(p.owner, new_owner);
+
+    assert!(!auth.is_authorized(&id, &owner));
+    assert!(auth.is_authorized(&id, &new_owner));
+
+    let old_owner_add = auth.try_add_authorized_actor(&owner, &id, &actor);
+    assert_eq!(old_owner_add, Err(Ok(Error::Unauthorized)));
+
+    auth.add_authorized_actor(&new_owner, &id, &actor);
+    assert!(auth.is_authorized(&id, &actor));
+}
+
+#[test]
+fn test_deactivated_product_blocks_transfer_until_reactivated() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let (registry, _auth, transfer) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+    let id = register_product(&env, &registry, &owner, "INTEG-002");
+
+    registry.deactivate_product(&owner, &id, &String::from_str(&env, "finalized"));
+
+    let blocked = transfer.try_transfer_product(&owner, &id, &new_owner);
+    assert_eq!(blocked, Err(Ok(Error::ProductDeactivated)));
+
+    registry.reactivate_product(&owner, &id);
+    transfer.transfer_product(&owner, &id, &new_owner);
+
+    let p = registry.get_product(&id);
+    assert_eq!(p.owner, new_owner);
+}
+
+#[test]
+fn test_batch_transfer_mixed_owned_unowned_and_missing_ids() {
+    let env = Env::default();
+    env.mock_all_auths();
+    let (registry, _auth, transfer) = setup(&env);
+
+    let owner = Address::generate(&env);
+    let other_owner = Address::generate(&env);
+    let new_owner = Address::generate(&env);
+
+    let own_a = register_product(&env, &registry, &owner, "INTEG-B1");
+    let own_b = register_product(&env, &registry, &owner, "INTEG-B2");
+    let foreign = register_product(&env, &registry, &other_owner, "INTEG-B3");
+
+    let mut batch = Vec::new(&env);
+    batch.push_back(own_a.clone());
+    batch.push_back(String::from_str(&env, "INTEG-NOTFOUND"));
+    batch.push_back(foreign.clone());
+    batch.push_back(own_b.clone());
+
+    let moved = transfer.batch_transfer_products(&owner, &batch, &new_owner);
+    assert_eq!(moved, 2);
+
+    assert_eq!(registry.get_product(&own_a).owner, new_owner);
+    assert_eq!(registry.get_product(&own_b).owner, new_owner);
+    assert_eq!(registry.get_product(&foreign).owner, other_owner);
+}
diff --git a/smart-contract/contracts/src/timelock.rs b/smart-contract/contracts/src/timelock.rs
new file mode 100644
index 00000000..d99bdcd9
--- /dev/null
+++ b/smart-contract/contracts/src/timelock.rs
@@ -0,0 +1,533 @@
+#![allow(deprecated)]
+
+use soroban_sdk::{
+    auth::{ContractContext, InvokerContractAuthEntry, SubContractInvocation},
+    contract, contractimpl, vec, Address, Env, IntoVal, Symbol, Val, Vec,
+};
+
+use crate::error::Error;
+use crate::types::{DataKey, TimelockAction, TimelockConfig, TimelockOperation, TimelockStatus};
+use crate::{ChainLogisticsContractClient, OracleSecurityContractClient, UpgradeContractClient};
+
+const MIN_DELAY_FLOOR: u64 = 86_400;
+const MAX_DELAY_CEILING: u64 = 7 * 86_400;
+
+fn load_config(env: &Env) -> Option<TimelockConfig> {
+    env.storage().persistent().get(&DataKey::TimelockConfig)
+}
+
+fn store_config(env: &Env, config: &TimelockConfig) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::TimelockConfig, config);
+}
+
+fn get_next_operation_id(env: &Env) -> u64 {
+    env.storage()
+        .persistent()
+        .get(&DataKey::NextTimelockOperationId)
+        .unwrap_or(1)
+}
+
+fn set_next_operation_id(env: &Env, next_id: u64) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::NextTimelockOperationId, &next_id);
+}
+
+fn load_operation(env: &Env, operation_id: u64) -> Option<TimelockOperation> {
+    env.storage()
+        .persistent()
+        .get(&DataKey::TimelockOperation(operation_id))
+}
+
+fn store_operation(env: &Env, operation: &TimelockOperation) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::TimelockOperation(operation.id), operation);
+}
+
+fn require_signer(env: &Env, caller: &Address) -> Result<TimelockConfig, Error> {
+    let config = load_config(env).ok_or(Error::MultiSigNotConfigured)?;
+    if !config.signers.contains(caller) {
+        return Err(Error::NotSigner);
+    }
+    caller.require_auth();
+    Ok(config)
+}
+
+fn validate_config(env: &Env, config: &TimelockConfig) -> Result<(), Error> {
+    if config.signers.is_empty() {
+        return Err(Error::InvalidInput);
+    }
+    if config.threshold == 0 || config.threshold > config.signers.len() {
+        return Err(Error::InvalidThreshold);
+    }
+    if config.min_delay_seconds < MIN_DELAY_FLOOR {
+        return Err(Error::TimelockDelayTooShort);
+    }
+    if config.max_delay_seconds > MAX_DELAY_CEILING
+        || config.max_delay_seconds < config.min_delay_seconds
+    {
+        return Err(Error::TimelockDelayTooLong);
+    }
+    if config.grace_period_seconds == 0 || config.grace_period_seconds > MAX_DELAY_CEILING {
+        return Err(Error::TimelockDelayTooLong);
+    }
+
+    let mut seen = Vec::new(env);
+    for signer in config.signers.iter() {
+        if seen.contains(&signer) {
+            return Err(Error::DuplicateSigner);
+        }
+        seen.push_back(signer);
+    }
+
+    Ok(())
+}
+
+fn maybe_queue(operation: &mut TimelockOperation, threshold: u32) {
+    if operation.approvals.len() >= threshold
+        && operation.status == TimelockStatus::PendingApprovals
+    {
+        operation.status = TimelockStatus::Queued;
+    }
+}
+
+fn authorize_subcall(env: &Env, contract: &Address, fn_name: &str, args: Vec<Val>) {
+    env.authorize_as_current_contract(vec![
+        env,
+        InvokerContractAuthEntry::Contract(SubContractInvocation {
+            context: ContractContext {
+                contract: contract.clone(),
+                fn_name: Symbol::new(env, fn_name),
+                args,
+            },
+            sub_invocations: vec![env],
+        }),
+    ]);
+}
+
+fn perform_action(env: &Env, config: &TimelockConfig, action: &TimelockAction) {
+    let timelock = env.current_contract_address();
+
+    match action {
+        TimelockAction::PauseMain => {
+            let args = vec![env, timelock.clone().into_val(env)];
+            authorize_subcall(env, &config.main_contract, "pause", args);
+            ChainLogisticsContractClient::new(env, &config.main_contract).pause(&timelock);
+        }
+        TimelockAction::UnpauseMain => {
+            let args = vec![env, timelock.clone().into_val(env)];
+            authorize_subcall(env, &config.main_contract, "unpause", args);
+            ChainLogisticsContractClient::new(env, &config.main_contract).unpause(&timelock);
+        }
+        TimelockAction::SetMainMultisig(multisig_contract) => {
+            let args = vec![
+                env,
+                timelock.clone().into_val(env),
+                multisig_contract.clone().into_val(env),
+            ];
+            authorize_subcall(env, &config.main_contract, "set_multisig_contract", args);
+            ChainLogisticsContractClient::new(env, &config.main_contract)
+                .set_multisig_contract(&timelock, multisig_contract);
+        }
+        TimelockAction::InitiateUpgrade(version, new_contract, migration_required) => {
+            let args = vec![
+                env,
+                timelock.clone().into_val(env),
+                version.clone().into_val(env),
+                new_contract.clone().into_val(env),
+                (*migration_required).into_val(env),
+            ];
+            authorize_subcall(env, &config.upgrade_contract, "initiate_upgrade", args);
+            UpgradeContractClient::new(env, &config.upgrade_contract).initiate_upgrade(
+                &timelock,
+                version,
+                new_contract,
+                migration_required,
+            );
+        }
+        TimelockAction::CompleteUpgrade => {
+            let args = vec![env, timelock.clone().into_val(env)];
+            authorize_subcall(env, &config.upgrade_contract, "complete_upgrade", args);
+            UpgradeContractClient::new(env, &config.upgrade_contract).complete_upgrade(&timelock);
+        }
+        TimelockAction::FailUpgrade(reason) => {
+            let args = vec![
+                env,
+                timelock.clone().into_val(env),
+                reason.clone().into_val(env),
+            ];
+            authorize_subcall(env, &config.upgrade_contract, "fail_upgrade", args);
+            UpgradeContractClient::new(env, &config.upgrade_contract)
+                .fail_upgrade(&timelock, reason);
+        }
+        TimelockAction::EmergencyPause(reason) => {
+            let args = vec![
+                env,
+                timelock.clone().into_val(env),
+                reason.clone().into_val(env),
+            ];
+            authorize_subcall(env, &config.upgrade_contract, "emergency_pause", args);
+            UpgradeContractClient::new(env, &config.upgrade_contract)
+                .emergency_pause(&timelock, reason);
+        }
+        TimelockAction::EmergencyUnpause => {
+            let args = vec![env, timelock.clone().into_val(env)];
+            authorize_subcall(env, &config.upgrade_contract, "emergency_unpause", args);
+            UpgradeContractClient::new(env, &config.upgrade_contract).emergency_unpause(&timelock);
+        }
+        TimelockAction::ConfigureOracleFeed(oracle_contract, oracle_config) => {
+            let args = vec![
+                env,
+                timelock.clone().into_val(env),
+                oracle_config.clone().into_val(env),
+            ];
+            authorize_subcall(env, oracle_contract, "configure_feed", args);
+            OracleSecurityContractClient::new(env, oracle_contract)
+                .configure_feed(&timelock, oracle_config);
+        }
+        TimelockAction::SetOracleFallback(oracle_contract, feed_id, value, observed_at) => {
+            let args = vec![
+                env,
+                timelock.clone().into_val(env),
+                feed_id.clone().into_val(env),
+                (*value).into_val(env),
+                (*observed_at).into_val(env),
+            ];
+            authorize_subcall(env, oracle_contract, "set_fallback_value", args);
+            OracleSecurityContractClient::new(env, oracle_contract).set_fallback_value(
+                &timelock,
+                feed_id,
+                value,
+                observed_at,
+            );
+        }
+    }
+}
+
+#[contract]
+pub struct TimelockContract;
+
+#[contractimpl]
+impl TimelockContract {
+    pub fn timelock_init(env: Env, config: TimelockConfig) -> Result<(), Error> {
+        if load_config(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+        validate_config(&env, &config)?;
+        for signer in config.signers.iter() {
+            signer.require_auth();
+        }
+        store_config(&env, &config);
+        set_next_operation_id(&env, 1);
+        Ok(())
+    }
+
+    pub fn get_config(env: Env) -> Result<TimelockConfig, Error> {
+        load_config(&env).ok_or(Error::MultiSigNotConfigured)
+    }
+
+    pub fn propose_action(
+        env: Env,
+        proposer: Address,
+        action: TimelockAction,
+        delay_seconds: u64,
+    ) -> Result<u64, Error> {
+        let config = require_signer(&env, &proposer)?;
+        if delay_seconds < config.min_delay_seconds {
+            return Err(Error::TimelockDelayTooShort);
+        }
+        if delay_seconds > config.max_delay_seconds {
+            return Err(Error::TimelockDelayTooLong);
+        }
+
+        let operation_id = get_next_operation_id(&env);
+        set_next_operation_id(&env, operation_id + 1);
+
+        let mut approvals = Vec::new(&env);
+        approvals.push_back(proposer.clone());
+
+        let mut operation = TimelockOperation {
+            id: operation_id,
+            proposer: proposer.clone(),
+            action,
+            created_at: env.ledger().timestamp(),
+            ready_at: env.ledger().timestamp() + delay_seconds,
+            execute_by: env.ledger().timestamp() + delay_seconds + config.grace_period_seconds,
+            status: TimelockStatus::PendingApprovals,
+            approvals,
+            required_approvals: config.threshold,
+            executed: false,
+        };
+        maybe_queue(&mut operation, config.threshold);
+        store_operation(&env, &operation);
+
+        env.events().publish(
+            (Symbol::new(&env, "timelock_proposed"), operation_id),
+            operation.clone(),
+        );
+        Ok(operation_id)
+    }
+
+    pub fn approve_action(
+        env: Env,
+        approver: Address,
+        operation_id: u64,
+    ) -> Result<TimelockOperation, Error> {
+        let config = require_signer(&env, &approver)?;
+        let mut operation = load_operation(&env, operation_id).ok_or(Error::ProposalNotFound)?;
+
+        if operation.status == TimelockStatus::Cancelled {
+            return Err(Error::TimelockCancelled);
+        }
+        if operation.status == TimelockStatus::Executed {
+            return Err(Error::ProposalAlreadyExecuted);
+        }
+        if operation.approvals.contains(&approver) {
+            return Err(Error::AlreadyApproved);
+        }
+
+        operation.approvals.push_back(approver.clone());
+        maybe_queue(&mut operation, config.threshold);
+        store_operation(&env, &operation);
+        Ok(operation)
+    }
+
+    pub fn cancel_action(
+        env: Env,
+        canceller: Address,
+        operation_id: u64,
+        reason: Symbol,
+    ) -> Result<(), Error> {
+        let _ = require_signer(&env, &canceller)?;
+        let mut operation = load_operation(&env, operation_id).ok_or(Error::ProposalNotFound)?;
+        if operation.status == TimelockStatus::Executed {
+            return Err(Error::ProposalAlreadyExecuted);
+        }
+        operation.status = TimelockStatus::Cancelled;
+        store_operation(&env, &operation);
+        env.events().publish(
+            (Symbol::new(&env, "timelock_cancelled"), operation_id),
+            (canceller, reason),
+        );
+        Ok(())
+    }
+
+    pub fn execute_action(env: Env, executor: Address, operation_id: u64) -> Result<(), Error> {
+        let config = require_signer(&env, &executor)?;
+        let mut operation = load_operation(&env, operation_id).ok_or(Error::ProposalNotFound)?;
+
+        if operation.status == TimelockStatus::Cancelled {
+            return Err(Error::TimelockCancelled);
+        }
+        if operation.status == TimelockStatus::Executed {
+            return Err(Error::ProposalAlreadyExecuted);
+        }
+        if operation.status != TimelockStatus::Queued {
+            return Err(Error::ThresholdNotReached);
+        }
+
+        let now = env.ledger().timestamp();
+        if now < operation.ready_at {
+            return Err(Error::TimelockNotReady);
+        }
+        if now > operation.execute_by {
+            return Err(Error::TimelockExpired);
+        }
+
+        perform_action(&env, &config, &operation.action);
+        operation.status = TimelockStatus::Executed;
+        store_operation(&env, &operation);
+        Ok(())
+    }
+
+    pub fn get_operation(env: Env, operation_id: u64) -> Result<TimelockOperation, Error> {
+        load_operation(&env, operation_id).ok_or(Error::ProposalNotFound)
+    }
+}
+
+#[cfg(test)]
+mod test_timelock {
+    use super::*;
+    use soroban_sdk::testutils::{Address as _, Ledger as _};
+    use soroban_sdk::{Address, Env, Symbol};
+
+    use crate::{
+        AuthorizationContract, ChainLogisticsContract, OracleFeedConfig, OracleFeedType,
+        OracleSecurityContract, OracleSecurityContractClient, TimelockAction, TimelockConfig,
+        TimelockStatus, UpgradeContract, UpgradeContractClient,
+    };
+
+    fn setup(
+        env: &Env,
+    ) -> (
+        TimelockContractClient<'_>,
+        Address,
+        Address,
+        crate::ChainLogisticsContractClient<'_>,
+        UpgradeContractClient<'_>,
+        Address,
+    ) {
+        let timelock_id = env.register_contract(None, TimelockContract);
+        let timelock_client = TimelockContractClient::new(env, &timelock_id);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let main_id = env.register_contract(None, ChainLogisticsContract);
+        let upgrade_id = env.register_contract(None, UpgradeContract);
+
+        let admin = Address::generate(env);
+        let reviewer = Address::generate(env);
+        let main_client = crate::ChainLogisticsContractClient::new(env, &main_id);
+        let upgrade_client = UpgradeContractClient::new(env, &upgrade_id);
+
+        main_client.init(&admin, &auth_id);
+        env.as_contract(&upgrade_id, || {
+            env.storage().persistent().set(&DataKey::Admin, &admin);
+            env.storage()
+                .persistent()
+                .set(&DataKey::MainContract, &main_id);
+        });
+
+        timelock_client.timelock_init(&TimelockConfig {
+            signers: soroban_sdk::vec![env, admin.clone(), reviewer.clone()],
+            threshold: 2,
+            min_delay_seconds: MIN_DELAY_FLOOR,
+            max_delay_seconds: 3 * 86_400,
+            grace_period_seconds: 86_400,
+            main_contract: main_id.clone(),
+            upgrade_contract: upgrade_id.clone(),
+        });
+
+        main_client.set_timelock_contract(&admin, &timelock_id);
+        upgrade_client.set_timelock_contract(&admin, &timelock_id);
+
+        (
+            timelock_client,
+            admin,
+            reviewer,
+            main_client,
+            upgrade_client,
+            timelock_id,
+        )
+    }
+
+    #[test]
+    fn test_timelock_pauses_main_contract_after_delay() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(1_000_000);
+
+        let (timelock, admin, reviewer, main_client, _upgrade, _timelock_id) = setup(&env);
+        let operation_id =
+            timelock.propose_action(&admin, &TimelockAction::PauseMain, &MIN_DELAY_FLOOR);
+
+        let pending = timelock.get_operation(&operation_id);
+        assert_eq!(pending.status, TimelockStatus::PendingApprovals);
+
+        let queued = timelock.approve_action(&reviewer, &operation_id);
+        assert_eq!(queued.status, TimelockStatus::Queued);
+
+        let too_early = timelock.try_execute_action(&admin, &operation_id);
+        assert_eq!(too_early, Err(Ok(Error::TimelockNotReady)));
+
+        env.ledger().set_timestamp(1_000_000 + MIN_DELAY_FLOOR);
+        timelock.execute_action(&admin, &operation_id);
+
+        assert!(main_client.is_paused());
+        assert_eq!(
+            timelock.get_operation(&operation_id).status,
+            TimelockStatus::Executed
+        );
+    }
+
+    #[test]
+    fn test_timelock_can_cancel_operation() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(2_000_000);
+
+        let (timelock, admin, reviewer, _main_client, _upgrade, _timelock_id) = setup(&env);
+        let operation_id =
+            timelock.propose_action(&admin, &TimelockAction::PauseMain, &MIN_DELAY_FLOOR);
+        timelock.approve_action(&reviewer, &operation_id);
+        timelock.cancel_action(&reviewer, &operation_id, &Symbol::new(&env, "veto"));
+
+        let op = timelock.get_operation(&operation_id);
+        assert_eq!(op.status, TimelockStatus::Cancelled);
+        assert_eq!(
+            timelock.try_execute_action(&admin, &operation_id),
+            Err(Ok(Error::TimelockCancelled))
+        );
+    }
+
+    #[test]
+    fn test_timelock_executes_upgrade_after_review_window() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(3_000_000);
+
+        let (timelock, admin, reviewer, _main_client, upgrade_client, _timelock_id) = setup(&env);
+        let new_contract = Address::generate(&env);
+        let version = crate::types::ContractVersion {
+            major: 1,
+            minor: 1,
+            patch: 0,
+        };
+
+        let operation_id = timelock.propose_action(
+            &admin,
+            &TimelockAction::InitiateUpgrade(version.clone(), new_contract.clone(), false),
+            &MIN_DELAY_FLOOR,
+        );
+        timelock.approve_action(&reviewer, &operation_id);
+
+        env.ledger().set_timestamp(3_000_000 + MIN_DELAY_FLOOR);
+        timelock.execute_action(&reviewer, &operation_id);
+
+        assert_eq!(
+            upgrade_client.get_upgrade_status(),
+            crate::types::UpgradeStatus::InProgress
+        );
+        let info = upgrade_client.get_upgrade_info().unwrap();
+        assert_eq!(info.new_version, version);
+        assert_eq!(info.new_contract_address, new_contract);
+    }
+
+    #[test]
+    fn test_timelock_can_update_oracle_configuration() {
+        let env = Env::default();
+        env.mock_all_auths();
+        env.ledger().set_timestamp(4_000_000);
+
+        let (timelock, admin, reviewer, _main_client, _upgrade, timelock_id) = setup(&env);
+        let oracle_id = env.register_contract(None, OracleSecurityContract);
+        let oracle_client = OracleSecurityContractClient::new(&env, &oracle_id);
+        oracle_client.oracle_init(&admin);
+        oracle_client.set_timelock_contract(&admin, &timelock_id);
+
+        let feed_id = Symbol::new(&env, "fuel");
+        let oracle_config = OracleFeedConfig {
+            feed_id: feed_id.clone(),
+            feed_type: OracleFeedType::FuelPrice,
+            min_value: 0,
+            max_value: 50_000,
+            max_age_seconds: 300,
+            min_sources: 2,
+            max_deviation_bps: 500,
+        };
+
+        let operation_id = timelock.propose_action(
+            &admin,
+            &TimelockAction::ConfigureOracleFeed(oracle_id.clone(), oracle_config.clone()),
+            &MIN_DELAY_FLOOR,
+        );
+        timelock.approve_action(&reviewer, &operation_id);
+
+        env.ledger().set_timestamp(4_000_000 + MIN_DELAY_FLOOR);
+        timelock.execute_action(&admin, &operation_id);
+
+        assert_eq!(oracle_client.get_feed_config(&feed_id), oracle_config);
+    }
+}
diff --git a/smart-contract/contracts/src/tracking.rs b/smart-contract/contracts/src/tracking.rs
new file mode 100644
index 00000000..c296c0dd
--- /dev/null
+++ b/smart-contract/contracts/src/tracking.rs
@@ -0,0 +1,682 @@
+/// Tracking contract for managing product supply chain events.
+/// This contract is responsible for:
+/// - Adding tracking events to products
+/// - Retrieving events by various criteria
+/// - Managing event counts and statistics
+use soroban_sdk::{contract, contractimpl, Address, BytesN, Env, Map, String, Symbol, Vec};
+
+use crate::error::Error;
+use crate::events::TrackingEventPublished;
+use crate::storage;
+use crate::types::{DataKey, TrackingEvent};
+use crate::validation_contract::ValidationContract;
+use crate::ChainLogisticsContractClient;
+
+// ─── Storage helpers for TrackingContract ────────────────────────────────────
+
+/// Get the main contract address from storage.
+fn get_main_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::MainContract)
+}
+
+/// Set the main contract address in storage.
+fn set_main_contract(env: &Env, address: &Address) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::MainContract, address);
+}
+
+/// Ensure the main contract is not paused.
+/// Returns ContractPaused error if the main contract is paused.
+fn require_not_paused(env: &Env) -> Result<(), Error> {
+    let main_contract = get_main_contract(env).ok_or(Error::NotInitialized)?;
+    let main_client = ChainLogisticsContractClient::new(env, &main_contract);
+    if main_client.is_paused() {
+        return Err(Error::ContractPaused);
+    }
+    Ok(())
+}
+
+/// Ensure the tracking contract has been initialized.
+/// Returns NotInitialized error if not initialized.
+fn require_init(env: &Env) -> Result<(), Error> {
+    if get_main_contract(env).is_none() {
+        return Err(Error::NotInitialized);
+    }
+    Ok(())
+}
+
+// ─── Contract ────────────────────────────────────────────────────────────────
+
+/// The Tracking contract manages supply chain events for products.
+#[contract]
+pub struct TrackingContract;
+
+// The TrackingContract implementation has functions with >7 parameters.
+// These are public contract entrypoints where signature changes would be breaking.
+// The parameters represent distinct pieces of tracking information required for
+// atomic operations. We allow this pattern rather than breaking the public API.
+#[allow(clippy::too_many_arguments)]
+#[contractimpl]
+impl TrackingContract {
+    /// Initialize the TrackingContract with the main contract address.
+    ///
+    /// # Arguments
+    /// * `main_contract` - The address of the main ChainLogistics contract
+    ///
+    /// # Returns
+    /// * `Result<(), Error>` - Returns error if already initialized
+    ///
+    /// # Errors
+    /// * `AlreadyInitialized` - If the contract has already been initialized
+    pub fn init(env: Env, main_contract: Address) -> Result<(), Error> {
+        if get_main_contract(&env).is_some() {
+            return Err(Error::AlreadyInitialized);
+        }
+        ValidationContract::validate_contract_address(&env, &main_contract)?;
+        set_main_contract(&env, &main_contract);
+        Ok(())
+    }
+
+    /// Add a new tracking event to a product.
+    /// Requires authentication from the actor.
+    /// Validates metadata and emits tracking event.
+    // This function has 8 parameters which exceeds clippy's default limit of 7.
+    // However, this is a public contract entrypoint and changing the signature would be
+    // a breaking change for any existing clients. The parameters represent distinct
+    // pieces of tracking information that are all required for a single atomic operation.
+    #[allow(clippy::too_many_arguments)]
+    pub fn tracking_add_event(
+        env: Env,
+        actor: Address,
+        product_id: String,
+        event_type: Symbol,
+        location: String,
+        data_hash: BytesN<32>,
+        note: String,
+        metadata: Map<Symbol, String>,
+    ) -> Result<u64, Error> {
+        require_init(&env)?;
+        require_not_paused(&env)?;
+        actor.require_auth();
+        ValidationContract::non_empty(&product_id)?;
+        ValidationContract::max_len(&product_id, ValidationContract::MAX_PRODUCT_ID_LEN)?;
+        ValidationContract::validate_event_type(&env, &event_type)?;
+
+        // Validate inputs early to fail fast and save gas
+        ValidationContract::validate_event_location(&location)?;
+        ValidationContract::validate_event_note(&note)?;
+        ValidationContract::validate_metadata(&metadata)?;
+
+        // Generate unique event ID (single storage read)
+        let event_id = storage::next_event_id(&env)?;
+
+        // Create event
+        let event = TrackingEvent {
+            event_id,
+            product_id: product_id.clone(),
+            actor,
+            timestamp: env.ledger().timestamp(),
+            event_type: event_type.clone(),
+            location,
+            data_hash,
+            note,
+            metadata,
+        };
+
+        // Batch storage operations for gas efficiency
+        storage::put_event(&env, &event);
+
+        // Update product event IDs (optimized: single read-modify-write)
+        let mut ids = storage::get_product_event_ids(&env, &product_id);
+        ids.push_back(event_id);
+        storage::put_product_event_ids(&env, &product_id, &ids);
+
+        // Index by type (single write)
+        storage::index_event_by_type(&env, &product_id, &event_type, event_id)?;
+
+        TrackingEventPublished {
+            product_id: product_id.clone(),
+            event_id,
+            event: event.clone(),
+        }
+        .publish(&env);
+
+        Ok(event_id)
+    }
+
+    /// Get a single event by its ID.
+    ///
+    /// # Arguments
+    /// * `event_id` - The ID of the event to retrieve
+    ///
+    /// # Returns
+    /// * `Result<TrackingEvent, Error>` - The tracking event
+    ///
+    /// # Errors
+    /// * `EventNotFound` - If the event does not exist
+    pub fn tracking_get_event(env: Env, event_id: u64) -> Result<TrackingEvent, Error> {
+        storage::get_event(&env, event_id).ok_or(Error::EventNotFound)
+    }
+
+    /// Get all event IDs for a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    ///
+    /// # Returns
+    /// * `Vec<u64>` - A vector of event IDs
+    pub fn tracking_get_product_event_ids(env: Env, product_id: String) -> Vec<u64> {
+        storage::get_product_event_ids(&env, &product_id)
+    }
+
+    /// Get the total event count for a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    ///
+    /// # Returns
+    /// * `u64` - The number of events
+    pub fn tracking_get_event_count(env: Env, product_id: String) -> u64 {
+        storage::get_product_event_ids(&env, &product_id).len() as u64
+    }
+
+    /// Get the count of events by type for a product.
+    ///
+    /// # Arguments
+    /// * `product_id` - The ID of the product
+    /// * `event_type` - The type of events to count
+    ///
+    /// # Returns
+    /// * `u64` - The number of events of the specified type
+    pub fn tracking_get_event_count_by_type(
+        env: Env,
+        product_id: String,
+        event_type: Symbol,
+    ) -> u64 {
+        storage::get_event_count_by_type(&env, &product_id, &event_type)
+    }
+}
+
+#[cfg(test)]
+mod test_tracking {
+    use super::*;
+    use crate::{
+        AuthorizationContract, AuthorizationContractClient, ChainLogisticsContract,
+        ChainLogisticsContractClient, ProductConfig, ProductRegistryContract,
+        ProductRegistryContractClient,
+    };
+    use soroban_sdk::{testutils::Address as _, Address, Env, Map};
+
+    fn setup_uninitialized(
+        env: &Env,
+    ) -> (
+        ChainLogisticsContractClient<'_>,
+        ProductRegistryContractClient<'_>,
+        Address,
+        Address,
+        super::TrackingContractClient<'_>,
+    ) {
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let cl_id = env.register_contract(None, ChainLogisticsContract);
+        let registry_id = env.register_contract(None, ProductRegistryContract);
+        let tracking_id = env.register_contract(None, super::TrackingContract);
+
+        let cl_client = ChainLogisticsContractClient::new(env, &cl_id);
+        let registry_client = ProductRegistryContractClient::new(env, &registry_id);
+        let tracking_client = super::TrackingContractClient::new(env, &tracking_id);
+
+        let auth_client = AuthorizationContractClient::new(env, &auth_id);
+        auth_client.configure_initializer(&registry_id);
+        registry_client.configure_auth_contract(&auth_id);
+
+        let admin = Address::generate(env);
+        cl_client.init(&admin, &auth_id);
+
+        (cl_client, registry_client, admin, cl_id, tracking_client)
+    }
+
+    fn setup_initialized(
+        env: &Env,
+    ) -> (
+        ChainLogisticsContractClient<'_>,
+        ProductRegistryContractClient<'_>,
+        Address,
+        Address,
+        super::TrackingContractClient<'_>,
+    ) {
+        let (cl_client, registry_client, admin, cl_id, tracking_client) = setup_uninitialized(env);
+        tracking_client.init(&cl_id);
+        (cl_client, registry_client, admin, cl_id, tracking_client)
+    }
+
+    fn register_test_product(
+        env: &Env,
+        client: &ProductRegistryContractClient,
+        owner: &Address,
+        id: &str,
+    ) -> String {
+        let product_id = String::from_str(env, id);
+        client.register_product(
+            owner,
+            &ProductConfig {
+                id: product_id.clone(),
+                name: String::from_str(env, "Test Product"),
+                description: String::from_str(env, "Description"),
+                origin_location: String::from_str(env, "Origin"),
+                category: String::from_str(env, "Category"),
+                tags: Vec::new(env),
+                certifications: Vec::new(env),
+                media_hashes: Vec::new(env),
+                custom: Map::new(env),
+            },
+        );
+        product_id
+    }
+
+    #[test]
+    fn test_add_tracking_event() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add tracking event
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let note = String::from_str(&env, "Product created");
+        let metadata = Map::new(&env);
+
+        let event_id = tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &note,
+            &metadata,
+        );
+
+        // Verify event ID is sequential
+        assert_eq!(event_id, 1);
+
+        // Verify event count
+        let count = tracking_client.tracking_get_event_count(&product_id);
+        assert_eq!(count, 1);
+    }
+
+    #[test]
+    fn test_get_event() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add tracking event
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let note = String::from_str(&env, "Product created");
+        let metadata = Map::new(&env);
+
+        let event_id = tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &note,
+            &metadata,
+        );
+
+        // Get event
+        let event = tracking_client.tracking_get_event(&event_id);
+        assert_eq!(event.event_id, event_id);
+        assert_eq!(event.product_id, product_id);
+        assert_eq!(event.actor, owner);
+        assert_eq!(event.event_type, event_type);
+    }
+
+    #[test]
+    fn test_get_event_before_init_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, _registry_client, _admin, _cl_id, tracking_client) =
+            setup_uninitialized(&env);
+
+        // Get non-existent event
+        let res = tracking_client.try_tracking_get_event(&999);
+        assert_eq!(res, Err(Ok(Error::EventNotFound)));
+    }
+
+    #[test]
+    fn test_add_event_when_paused_fails_and_unpause_restores() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (cl_client, registry_client, admin, cl_id, tracking_client) = setup_initialized(&env);
+
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        cl_client.pause(&admin);
+
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let note = String::from_str(&env, "Product created");
+        let metadata = Map::new(&env);
+
+        let res = tracking_client.try_tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &note,
+            &metadata,
+        );
+        assert_eq!(res, Err(Ok(Error::ContractPaused)));
+
+        cl_client.unpause(&admin);
+
+        let event_id = tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &note,
+            &metadata,
+        );
+        assert_eq!(event_id, 1);
+    }
+
+    #[test]
+    fn test_add_multiple_events() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add multiple events
+        let event_type = Symbol::new(&env, "shipped");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let metadata = Map::new(&env);
+
+        let event_id1 = tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "First event"),
+            &metadata,
+        );
+
+        let event_id2 = tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Second event"),
+            &metadata,
+        );
+
+        // Verify IDs are sequential
+        assert_eq!(event_id1, 1);
+        assert_eq!(event_id2, 2);
+
+        // Verify event count
+        let count = tracking_client.tracking_get_event_count(&product_id);
+        assert_eq!(count, 2);
+    }
+
+    #[test]
+    fn test_get_product_event_ids() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add events
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let metadata = Map::new(&env);
+
+        tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Event 1"),
+            &metadata,
+        );
+
+        tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Event 2"),
+            &metadata,
+        );
+
+        // Get event IDs
+        let event_ids = tracking_client.tracking_get_product_event_ids(&product_id);
+        assert_eq!(event_ids.len(), 2);
+        assert_eq!(event_ids.get(0), Some(1));
+        assert_eq!(event_ids.get(1), Some(2));
+    }
+
+    #[test]
+    fn test_event_count_by_type() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let metadata = Map::new(&env);
+
+        // Add events of different types
+        tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &Symbol::new(&env, "created"),
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Created"),
+            &metadata,
+        );
+
+        tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &Symbol::new(&env, "shipped"),
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Shipped"),
+            &metadata,
+        );
+
+        tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &Symbol::new(&env, "shipped"),
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Shipped again"),
+            &metadata,
+        );
+
+        // Verify counts by type
+        let created_count = tracking_client
+            .tracking_get_event_count_by_type(&product_id, &Symbol::new(&env, "created"));
+        let shipped_count = tracking_client
+            .tracking_get_event_count_by_type(&product_id, &Symbol::new(&env, "shipped"));
+
+        assert_eq!(created_count, 1);
+        assert_eq!(shipped_count, 2);
+    }
+
+    #[test]
+    fn test_add_event_with_metadata() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Add event with metadata
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+
+        let mut metadata = Map::new(&env);
+        metadata.set(
+            Symbol::new(&env, "temperature"),
+            String::from_str(&env, "20C"),
+        );
+        metadata.set(Symbol::new(&env, "humidity"), String::from_str(&env, "50%"));
+
+        let event_id = tracking_client.tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "With metadata"),
+            &metadata,
+        );
+
+        // Verify event
+        let event = tracking_client.tracking_get_event(&event_id);
+        assert_eq!(event.metadata.len(), 2);
+    }
+
+    #[test]
+    fn test_add_event_metadata_validation() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, registry_client, _admin, _cl_id, tracking_client) =
+            setup_initialized(&env);
+        let owner = Address::generate(&env);
+        let product_id = register_test_product(&env, &registry_client, &owner, "PROD1");
+
+        // Try to add event with too many metadata fields
+        let mut metadata = Map::new(&env);
+        // Add 25 fields (exceeds limit of 20) - using static keys
+        metadata.set(Symbol::new(&env, "key0"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key1"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key2"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key3"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key4"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key5"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key6"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key7"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key8"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key9"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key10"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key11"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key12"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key13"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key14"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key15"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key16"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key17"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key18"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key19"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key20"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key21"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key22"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key23"), String::from_str(&env, "value"));
+        metadata.set(Symbol::new(&env, "key24"), String::from_str(&env, "value"));
+
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+
+        let res = tracking_client.try_tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Too much metadata"),
+            &metadata,
+        );
+
+        assert_eq!(res, Err(Ok(Error::TooManyCustomFields)));
+    }
+
+    #[test]
+    fn test_init_already_initialized_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (_cl_client, _registry_client, _admin, cl_id, tracking_client) =
+            setup_uninitialized(&env);
+
+        tracking_client.init(&cl_id);
+
+        // Second init should fail
+        let res = tracking_client.try_init(&cl_id);
+        assert_eq!(res, Err(Ok(Error::AlreadyInitialized)));
+    }
+
+    #[test]
+    fn test_add_event_before_init_fails() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let tracking_id = env.register_contract(None, super::TrackingContract);
+        let tracking_client = super::TrackingContractClient::new(&env, &tracking_id);
+
+        let owner = Address::generate(&env);
+        let product_id = String::from_str(&env, "PROD1");
+        let event_type = Symbol::new(&env, "created");
+        let location = String::from_str(&env, "Warehouse A");
+        let data_hash = BytesN::from_array(&env, &[0; 32]);
+        let metadata = Map::new(&env);
+
+        // Adding event without initialization should fail with NotInitialized
+        let res = tracking_client.try_tracking_add_event(
+            &owner,
+            &product_id,
+            &event_type,
+            &location,
+            &data_hash,
+            &String::from_str(&env, "Test event"),
+            &metadata,
+        );
+
+        assert_eq!(res, Err(Ok(Error::NotInitialized)));
+    }
+}
diff --git a/smart-contract/contracts/src/types.rs b/smart-contract/contracts/src/types.rs
new file mode 100644
index 00000000..86671517
--- /dev/null
+++ b/smart-contract/contracts/src/types.rs
@@ -0,0 +1,608 @@
+/// Type definitions for the ChainLogistics smart contracts.
+/// This module contains all data structures used across the contract suite.
+use soroban_sdk::{contracttype, Address, BytesN, Map, String, Symbol, Val, Vec};
+
+/// Information about product deactivation.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct DeactInfo {
+    /// The reason for deactivation
+    pub reason: String,
+    /// Timestamp when the product was deactivated
+    pub deactivated_at: u64,
+    /// Address that deactivated the product
+    pub deactivated_by: Address,
+}
+
+/// Product origin information.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Origin {
+    /// The location where the product originated
+    pub location: String,
+}
+
+/// Configuration for product registration.
+/// Used as input when creating a new product.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductConfig {
+    /// Unique product identifier
+    pub id: String,
+    /// Product name
+    pub name: String,
+    /// Product description
+    pub description: String,
+    /// Origin location
+    pub origin_location: String,
+    /// Product category
+    pub category: String,
+    /// Product tags for classification
+    pub tags: Vec<String>,
+    /// Certification hashes
+    pub certifications: Vec<BytesN<32>>,
+    /// Media file hashes (images, videos, etc.)
+    pub media_hashes: Vec<BytesN<32>>,
+    /// Custom key-value metadata
+    pub custom: Map<Symbol, String>,
+}
+
+/// Complete product information stored on-chain.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Product {
+    /// Unique product identifier
+    pub id: String,
+    /// Product name
+    pub name: String,
+    /// Product description
+    pub description: String,
+    /// Product origin information
+    pub origin: Origin,
+    /// Current product owner
+    pub owner: Address,
+    /// Timestamp when product was created
+    pub created_at: u64,
+    /// Whether the product is active (can receive events)
+    pub active: bool,
+    /// Product category
+    pub category: String,
+    /// Product tags
+    pub tags: Vec<String>,
+    /// Certification hashes
+    pub certifications: Vec<BytesN<32>>,
+    /// Media file hashes
+    pub media_hashes: Vec<BytesN<32>>,
+    /// Custom metadata
+    pub custom: Map<Symbol, String>,
+    /// Deactivation history
+    pub deactivation_info: Vec<DeactInfo>,
+}
+
+/// A tracking event in the product's supply chain journey.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEvent {
+    /// Unique event identifier
+    pub event_id: u64,
+    /// ID of the product this event belongs to
+    pub product_id: String,
+    /// Address that added this event
+    pub actor: Address,
+    /// Timestamp when the event occurred
+    pub timestamp: u64,
+    /// Type of event (e.g., "shipped", "received", "processed")
+    pub event_type: Symbol,
+    /// Location where the event occurred
+    pub location: String,
+    /// Hash of the event data for integrity verification
+    pub data_hash: BytesN<32>,
+    /// Optional note about the event
+    pub note: String,
+    /// Additional event metadata
+    pub metadata: Map<Symbol, String>,
+}
+
+/// Paginated result for tracking events.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventPage {
+    /// The events in this page
+    pub events: Vec<TrackingEvent>,
+    /// Total number of events available
+    pub total_count: u64,
+    /// Whether more events are available
+    pub has_more: bool,
+}
+
+/// Global product statistics.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductStats {
+    /// Total number of products ever registered
+    pub total_products: u64,
+    /// Number of currently active products
+    pub active_products: u64,
+}
+
+// ─── Storage Keys ───────────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum DataKey {
+    Product(String),
+    ProductEventIds(String),
+    ProductEventTimestamps(String),
+    ProductEventIdsByType(String, Symbol),
+    ProductEventIdsByActor(String, Address),
+    Event(u64),
+    EventSeq,
+    AllProductIds,
+    Auth(String, Address),
+    EventTypeIndex(String, Symbol, u64),
+    EventTypeCount(String, Symbol),
+    EventActorIndex(String, Address, u64),
+    EventActorCount(String, Address),
+    TotalProducts,
+    ActiveProducts,
+    SearchIndex(IndexKey), // For product search functionality
+    ContractVersion,       // Current contract version
+    UpgradeInfo,           // Current upgrade information
+    UpgradeStatus,         // Current upgrade status
+    EmergencyPause,        // Emergency pause flag
+    MultiSigConfig,        // Multi-signature configuration
+    Proposal(u64),         // Proposal by ID
+    NextProposalId,        // Next proposal ID counter
+    Admin,                 // Admin address
+    Paused,                // Pause status
+    AuthContract,          // Authorization contract address
+    MainContract,          // Main contract address
+    TransferContract,      // Transfer contract address
+    MultiSigContract,      // Multisig contract address
+    TimelockContract,      // Timelock contract address
+    OracleFeedConfig(Symbol),
+    OracleFeedSources(Symbol),
+    OracleSource(Symbol, Address),
+    OracleReport(Symbol, Address),
+    OracleSnapshot(Symbol),
+    OracleFallback(Symbol),
+    OracleCircuitBreaker(Symbol),
+    TimelockConfig,
+    TimelockOperation(u64),
+    NextTimelockOperationId,
+    ReentrancyLock(Symbol),
+    // ── Circuit Breaker ──────────────────────────────────────────────────
+    CircuitBreakerContract,
+    CircuitBreakerState,
+    CircuitBreakerGuardians,
+    CircuitBreakerPauseRecord(u64),
+    CircuitBreakerNextRecordId,
+    CircuitBreakerPendingApproval(u64),
+    CircuitBreakerNextApprovalId,
+}
+
+// ─── Event Types ───────────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventInput {
+    pub product_id: String,
+    pub event_type: Symbol,
+    pub location: String,
+    pub participant: Address,
+    pub data_hash: BytesN<32>,
+    pub note: String,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventFilter {
+    pub event_type: Symbol,
+    pub start_time: u64,
+    pub end_time: u64,
+    pub location: String,
+}
+
+// ─── Index Types ───────────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum IndexKey {
+    Keyword(String),
+}
+
+/// Contract version information following semantic versioning.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ContractVersion {
+    /// Major version (incompatible API changes)
+    pub major: u32,
+    /// Minor version (backwards-compatible functionality additions)
+    pub minor: u32,
+    /// Patch version (backwards-compatible bug fixes)
+    pub patch: u32,
+}
+
+/// Information about a contract upgrade.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeInfo {
+    /// The new contract version
+    pub new_version: ContractVersion,
+    /// Address of the new contract
+    pub new_contract_address: Address,
+    /// When the upgrade was initiated
+    pub upgrade_timestamp: u64,
+    /// Address that initiated the upgrade
+    pub upgraded_by: Address,
+    /// Whether data migration is required
+    pub migration_required: bool,
+}
+
+/// Status of a contract upgrade process.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum UpgradeStatus {
+    /// Upgrade has not been started
+    NotStarted,
+    /// Upgrade is in progress
+    InProgress,
+    /// Upgrade completed successfully
+    Completed,
+    /// Upgrade failed
+    Failed,
+}
+
+/// Status of a multi-signature proposal.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum ProposalStatus {
+    /// Proposal is active and awaiting approvals
+    Active,
+    /// Threshold reached, awaiting time-lock or execution
+    Approved,
+    /// Proposal has been executed
+    Executed,
+    /// Proposal was rejected by signers
+    Rejected,
+    /// Proposal has expired
+    Expired,
+}
+
+// ─── Multi-Signature Types ─────────────────────────────────────────────────────
+
+/// Multi-signature configuration for administrative actions.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct MultiSigConfig {
+    /// List of authorized signer addresses
+    pub signers: Vec<Address>,
+    /// Default number of signatures required
+    pub threshold: u32,
+    /// Specific thresholds for different operation types (kind -> threshold)
+    pub thresholds: Map<Symbol, u32>,
+    /// Time locks for different operation types (kind -> delay in seconds)
+    pub time_locks: Map<Symbol, u64>,
+}
+
+/// A multi-signature proposal for administrative actions.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Proposal {
+    /// Unique proposal identifier
+    pub id: u64,
+    /// Type of proposal (e.g., "transfer_admin", "pause", "unpause")
+    pub kind: Symbol,
+    /// Target contract for the proposal
+    pub target: Address,
+    /// Arguments for the proposal
+    pub args: Vec<Val>,
+    /// Address that created the proposal
+    pub proposer: Address,
+    /// When the proposal was created
+    pub created_at: u64,
+    /// Timestamp when threshold was reached (0 if not reached)
+    pub approved_at: u64,
+    /// Current status of the proposal
+    pub status: ProposalStatus,
+    /// Addresses that have approved the proposal
+    pub approvals: Vec<Address>,
+    /// Addresses that have rejected the proposal
+    pub rejections: Vec<Address>,
+}
+
+// ─── Oracle Security Types ───────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum OracleFeedType {
+    CommodityPrice,
+    FuelPrice,
+    ExchangeRate,
+    Temperature,
+    Humidity,
+    GpsLocation,
+    ShipmentCondition,
+    SecureTimestamp,
+    ComplianceStatus,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct OracleFeedConfig {
+    pub feed_id: Symbol,
+    pub feed_type: OracleFeedType,
+    pub min_value: i128,
+    pub max_value: i128,
+    pub max_age_seconds: u64,
+    pub min_sources: u32,
+    pub max_deviation_bps: u32,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct OracleSource {
+    pub reporter: Address,
+    pub stake: i128,
+    pub active: bool,
+    pub reward_points: u32,
+    pub slash_count: u32,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct OracleReport {
+    pub reporter: Address,
+    pub value: i128,
+    pub observed_at: u64,
+    pub submitted_at: u64,
+    pub proof_hash: BytesN<32>,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct OracleSnapshot {
+    pub feed_id: Symbol,
+    pub value: i128,
+    pub observed_at: u64,
+    pub source_count: u32,
+    pub using_fallback: bool,
+    pub circuit_broken: bool,
+}
+
+// ─── Gas Handling Types ──────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct GasPolicy {
+    pub max_batch_size: u32,
+    pub recommended_chunk_size: u32,
+    pub base_cost_units: u64,
+    pub per_item_cost_units: u64,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct GasEstimate {
+    pub item_count: u32,
+    pub estimated_cost_units: u64,
+    pub recommended_chunk_size: u32,
+    pub recommended_chunk_count: u32,
+    pub fits_single_transaction: bool,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct BatchProgress {
+    pub requested: u32,
+    pub processed: u32,
+    pub succeeded: u32,
+    pub next_cursor: u32,
+    pub complete: bool,
+}
+
+// ─── Timelock Types ──────────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum TimelockAction {
+    PauseMain,
+    UnpauseMain,
+    SetMainMultisig(Address),
+    InitiateUpgrade(ContractVersion, Address, bool),
+    CompleteUpgrade,
+    FailUpgrade(Symbol),
+    EmergencyPause(Symbol),
+    EmergencyUnpause,
+    ConfigureOracleFeed(Address, OracleFeedConfig),
+    SetOracleFallback(Address, Symbol, i128, u64),
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TimelockConfig {
+    pub signers: Vec<Address>,
+    pub threshold: u32,
+    pub min_delay_seconds: u64,
+    pub max_delay_seconds: u64,
+    pub grace_period_seconds: u64,
+    pub main_contract: Address,
+    pub upgrade_contract: Address,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum TimelockStatus {
+    PendingApprovals,
+    Queued,
+    Executed,
+    Cancelled,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TimelockOperation {
+    pub id: u64,
+    pub proposer: Address,
+    pub action: TimelockAction,
+    pub created_at: u64,
+    pub ready_at: u64,
+    pub execute_by: u64,
+    pub status: TimelockStatus,
+    pub approvals: Vec<Address>,
+    pub required_approvals: u32,
+    pub executed: bool,
+}
+
+// ─── Quality Control Types ────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct QualityCertification {
+    pub certification_id: String,
+    pub certification_type: String,
+    pub issuer: String,
+    pub certificate_id: String,
+    pub valid_from: u64,
+    pub valid_until: u64,
+    pub status: String,
+    pub metadata: String,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct QualityReading {
+    pub reading_id: String,
+    pub product_id: String,
+    pub sensor_id: String,
+    pub parameter: String,
+    pub value: i128,
+    pub unit: String,
+    pub timestamp: u64,
+    pub location: String,
+    pub status: String, // "normal", "warning", "critical"
+    pub threshold_min: Option<i128>,
+    pub threshold_max: Option<i128>,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct QualityParameter {
+    pub name: String,
+    pub unit: String,
+    pub threshold_min: Option<i128>,
+    pub threshold_max: Option<i128>,
+    pub critical_threshold_min: Option<i128>,
+    pub critical_threshold_max: Option<i128>,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ParameterStats {
+    pub count: u32,
+    pub sum: i128,
+    pub min: i128,
+    pub max: i128,
+    pub avg: i128,
+    pub last_reading: i128,
+    pub last_timestamp: u64,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct SensorInfo {
+    pub address: Address,
+    pub sensor_id: String,
+    pub sensor_type: String,
+    pub authorized: bool,
+}
+
+// ─── Circuit Breaker Types ─────────────────────────────────────────────────
+
+/// Pause severity levels.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum PauseLevel {
+    /// Informational — no functions blocked.
+    Advisory,
+    /// Block write operations (add_tracking_event, register_product).
+    Partial,
+    /// Block writes and mutations (transfer_product, batch_transfer).
+    Full,
+    /// Block everything including reads (except status queries).
+    Emergency,
+}
+
+/// Reason category for a pause — used for off-chain monitoring and audit.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum PauseReason {
+    SecurityBreach,
+    OracleFailure,
+    RegulatoryAction,
+    Maintenance,
+    MarketVolatility,
+    SystemUpgrade,
+    ContractBug,
+    Other,
+}
+
+/// Historical pause record stored for audit and analytics.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct PauseRecord {
+    pub record_id: u64,
+    pub activated_by: Address,
+    pub level: PauseLevel,
+    pub reason: PauseReason,
+    pub description: String,
+    pub activated_at: u64,
+    /// 0 means no expiry.
+    pub expires_at: u64,
+    /// Addresses that lifted the pause (empty if still active).
+    pub lifted_by: Vec<Address>,
+    /// When the pause was lifted (0 if still active).
+    pub lifted_at: u64,
+}
+
+/// Live state of the circuit breaker stored in persistent storage.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct CircuitBreakerState {
+    pub is_paused: bool,
+    pub level: PauseLevel,
+    pub current_record_id: u64,
+    pub paused_at: u64,
+    pub expires_at: u64,
+}
+
+/// A pending multi-authority pause approval request.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct PauseApproval {
+    pub approval_id: u64,
+    pub proposed_level: PauseLevel,
+    pub proposed_reason: PauseReason,
+    pub description: String,
+    pub expires_at: u64,
+    pub proposer: Address,
+    pub approvals: Vec<Address>,
+    pub required_approvals: u32,
+    pub executed: bool,
+}
+
+// Extend DataKey for quality control
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum QualityDataKey {
+    QualityControlEnabled(String),
+    QualityControlAdmin(String),
+    QualityCertification(String, String), // product_id, certification_id
+    QualityCertifications(String),        // product_id -> Vec<certification_id>
+    QualityReading(String, String),       // product_id, reading_id
+    QualityReadings(String),              // product_id -> Vec<reading_id>
+    QualityParameters(String),            // product_id -> Vec<QualityParameter>
+    ParameterStats(String, String),       // product_id, parameter_name
+    AuthorizedSensor(String, Address),    // product_id, sensor_address
+    AuthorizedSensors(String),            // product_id -> Vec<sensor_address>
+}
diff --git a/smart-contract/contracts/src/types.rs.backup b/smart-contract/contracts/src/types.rs.backup
new file mode 100644
index 00000000..bdeb1187
--- /dev/null
+++ b/smart-contract/contracts/src/types.rs.backup
@@ -0,0 +1,265 @@
+use soroban_sdk::{contracttype, Address, BytesN, Map, String, Symbol, Val, Vec};
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct DeactInfo {
+    pub reason: String,
+    pub deactivated_at: u64,
+    pub deactivated_by: Address,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Origin {
+    pub location: String,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductConfig {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin_location: String,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<BytesN<32>>,
+    pub media_hashes: Vec<BytesN<32>>,
+    pub custom: Map<Symbol, String>,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Product {
+    pub id: String,
+    pub name: String,
+    pub description: String,
+    pub origin: Origin,
+    pub owner: Address,
+    pub created_at: u64,
+    pub active: bool,
+    pub category: String,
+    pub tags: Vec<String>,
+    pub certifications: Vec<BytesN<32>>,
+    pub media_hashes: Vec<BytesN<32>>,
+    pub custom: Map<Symbol, String>,
+    pub deactivation_info: Vec<DeactInfo>,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEvent {
+    pub event_id: u64,
+    pub product_id: String,
+    pub actor: Address,
+    pub timestamp: u64,
+    pub event_type: Symbol,
+    pub location: String, // Added missing location field
+    pub data_hash: BytesN<32>,
+    pub note: String,
+    pub metadata: Map<Symbol, String>,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventPage {
+    pub events: Vec<TrackingEvent>,
+    pub total_count: u64,
+    pub has_more: bool,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ProductStats {
+    pub total_products: u64,
+    pub active_products: u64,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum DataKey {
+    Product(String),
+    ProductEventIds(String),
+    ProductEventTimestamps(String),
+    ProductEventIdsByType(String, Symbol),
+    ProductEventIdsByActor(String, Address),
+    Event(u64),
+    EventSeq,
+    EventTypeIndex(String, Symbol, u64),
+    EventTypeCount(String, Symbol),
+    Auth(String, Address),
+    Admin,
+    Paused,
+    AuthContract, // Added for cross-contract delegation
+    MainContract, // Added for ProductTransferContract
+    TransferContract,
+    MultiSigContract, // Multi-signature contract address
+    TotalProducts,
+    ActiveProducts,
+    SearchIndex(IndexKey), // For product search functionality
+    ContractVersion,       // Current contract version
+    UpgradeInfo,           // Current upgrade information
+    UpgradeStatus,         // Current upgrade status
+    EmergencyPause,        // Emergency pause flag
+    MultiSigConfig,        // Multi-signature configuration
+    Proposal(u64),         // Proposal by ID
+    NextProposalId,        // Next proposal ID counter
+    // ── Circuit Breaker ──────────────────────────────────────────────────
+    CircuitBreakerContract,         // Address of the circuit breaker contract
+    CircuitBreakerState,            // Global CircuitBreakerState struct
+    CircuitBreakerGuardians,        // Vec<Address> of authorised guardians
+    CircuitBreakerPauseRecord(u64), // PauseRecord by sequential ID
+    CircuitBreakerNextRecordId,     // u64 counter for pause records
+    CircuitBreakerPendingApproval(u64), // PauseApproval struct for multi-auth pauses
+    CircuitBreakerNextApprovalId,   // u64 counter for pending approvals
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventInput {
+    pub product_id: String,
+    pub event_type: Symbol,
+    pub data_hash: BytesN<32>,
+    pub note: String,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct TrackingEventFilter {
+    pub event_type: Symbol,
+    pub start_time: u64,
+    pub end_time: u64,
+    pub location: String,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum IndexKey {
+    Keyword(String), // keyword -> Vec<product_id>
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct ContractVersion {
+    pub major: u32,
+    pub minor: u32,
+    pub patch: u32,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct UpgradeInfo {
+    pub new_version: ContractVersion,
+    pub new_contract_address: Address,
+    pub upgrade_timestamp: u64,
+    pub upgraded_by: Address,
+    pub migration_required: bool,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum UpgradeStatus {
+    NotStarted,
+    InProgress,
+    Completed,
+    Failed,
+}
+
+// ─── Multi-Signature Types ─────────────────────────────────────────────────────
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct MultiSigConfig {
+    pub signers: Vec<Address>,
+    pub threshold: u32,
+}
+
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct Proposal {
+    pub id: u64,
+    pub kind: Symbol, // "transfer_admin", "initiate_upgrade", "complete_upgrade", "fail_upgrade", "pause", "unpause"
+    pub args: Vec<Val>,
+    pub proposer: Address,
+    pub created_at: u64,
+    pub executed: bool,
+    pub approvals: Vec<Address>,
+}
+
+// ─── Circuit Breaker Types ────────────────────────────────────────────────────
+
+/// Severity level of a pause — controls which functions are blocked.
+///
+/// | Level      | Blocked operations                                      |
+/// |------------|---------------------------------------------------------|
+/// | Advisory   | None — informational only, no functions blocked         |
+/// | Partial    | Tracking event writes; product registration             |
+/// | Full       | All state-mutating operations                           |
+/// | Emergency  | All operations including reads (except status queries)  |
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum PauseLevel {
+    /// Informational — no functions blocked.
+    Advisory,
+    /// Block write operations (add_tracking_event, register_product).
+    Partial,
+    /// Block all state-mutating operations.
+    Full,
+    /// Block everything including reads (maximum lockdown).
+    Emergency,
+}
+
+/// Reason category for a pause — used for off-chain monitoring and audit.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub enum PauseReason {
+    SecurityBreach,
+    OracleFailure,
+    RegulatoryAction,
+    ContractBug,
+    MarketVolatility,
+    Maintenance,
+    Other,
+}
+
+/// Immutable record written to storage when a pause is activated or lifted.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct PauseRecord {
+    pub record_id: u64,
+    pub activated_by: Address,
+    pub level: PauseLevel,
+    pub reason: PauseReason,
+    pub description: String,
+    pub activated_at: u64,
+    /// 0 means no expiry.
+    pub expires_at: u64,
+    pub lifted_at: u64,
+    pub lifted_by: Vec<Address>,
+}
+
+/// Live state of the circuit breaker stored in persistent storage.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct CircuitBreakerState {
+    pub is_paused: bool,
+    pub level: PauseLevel,
+    pub current_record_id: u64,
+    pub paused_at: u64,
+    pub expires_at: u64,
+}
+
+/// A pending multi-authority pause approval request.
+#[contracttype]
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct PauseApproval {
+    pub approval_id: u64,
+    pub proposed_level: PauseLevel,
+    pub proposed_reason: PauseReason,
+    pub description: String,
+    pub expires_at: u64,
+    pub proposer: Address,
+    pub approvals: Vec<Address>,
+    pub required_approvals: u32,
+    pub executed: bool,
+}
diff --git a/smart-contract/contracts/src/upgrade.rs b/smart-contract/contracts/src/upgrade.rs
new file mode 100644
index 00000000..842bb72a
--- /dev/null
+++ b/smart-contract/contracts/src/upgrade.rs
@@ -0,0 +1,499 @@
+use soroban_sdk::{contract, contractimpl, Address, Env, Symbol};
+
+use crate::error::Error;
+use crate::events::{
+    EmergencyPause, EmergencyUnpause, UpgradeCompleted, UpgradeFailed, UpgradeInitiated,
+    UpgradeReset,
+};
+use crate::types::{ContractVersion, DataKey, UpgradeInfo, UpgradeStatus};
+use crate::ChainLogisticsContractClient;
+
+// ─── Storage helpers ─────────────────────────────────────────────────────────
+
+fn get_contract_version(env: &Env) -> ContractVersion {
+    env.storage()
+        .persistent()
+        .get(&DataKey::ContractVersion)
+        .unwrap_or(ContractVersion {
+            major: 1,
+            minor: 0,
+            patch: 0,
+        })
+}
+
+fn set_contract_version(env: &Env, version: &ContractVersion) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::ContractVersion, version);
+}
+
+fn get_upgrade_info(env: &Env) -> Option<UpgradeInfo> {
+    env.storage().persistent().get(&DataKey::UpgradeInfo)
+}
+
+fn set_upgrade_info(env: &Env, info: &UpgradeInfo) {
+    env.storage().persistent().set(&DataKey::UpgradeInfo, info);
+}
+
+fn get_upgrade_status(env: &Env) -> UpgradeStatus {
+    env.storage()
+        .persistent()
+        .get(&DataKey::UpgradeStatus)
+        .unwrap_or(UpgradeStatus::NotStarted)
+}
+
+fn set_upgrade_status(env: &Env, status: &UpgradeStatus) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::UpgradeStatus, status);
+}
+
+fn get_emergency_pause(env: &Env) -> bool {
+    env.storage()
+        .persistent()
+        .get(&DataKey::EmergencyPause)
+        .unwrap_or(false)
+}
+
+fn set_emergency_pause(env: &Env, paused: &bool) {
+    env.storage()
+        .persistent()
+        .set(&DataKey::EmergencyPause, paused);
+}
+
+fn get_admin(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::Admin)
+}
+
+fn get_main_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::MainContract)
+}
+
+fn get_timelock_contract(env: &Env) -> Option<Address> {
+    env.storage().persistent().get(&DataKey::TimelockContract)
+}
+
+// ─── Internal helpers ────────────────────────────────────────────────────────
+
+fn require_admin(env: &Env, caller: &Address) -> Result<(), Error> {
+    let admin = get_admin(env).ok_or(Error::NotInitialized)?;
+    if &admin == caller {
+        caller.require_auth();
+        return Ok(());
+    }
+
+    if let Some(multisig) = env
+        .storage()
+        .persistent()
+        .get::<crate::types::DataKey, Address>(&crate::types::DataKey::MultiSigContract)
+    {
+        if &multisig == caller {
+            if env.current_contract_address() != multisig {
+                caller.require_auth();
+            }
+            return Ok(());
+        }
+    }
+
+    if let Some(timelock) = get_timelock_contract(env) {
+        if &timelock == caller {
+            if env.current_contract_address() != timelock {
+                caller.require_auth();
+            }
+            return Ok(());
+        }
+    }
+
+    Err(Error::Unauthorized)
+}
+
+fn require_not_emergency_paused(env: &Env) -> Result<(), Error> {
+    if get_emergency_pause(env) {
+        return Err(Error::EmergencyPaused);
+    }
+    Ok(())
+}
+
+fn validate_version_upgrade(
+    old_version: &ContractVersion,
+    new_version: &ContractVersion,
+) -> Result<(), Error> {
+    // Ensure new version is actually newer
+    if new_version.major < old_version.major {
+        return Err(Error::InvalidUpgrade);
+    }
+    if new_version.major == old_version.major && new_version.minor < old_version.minor {
+        return Err(Error::InvalidUpgrade);
+    }
+    if new_version.major == old_version.major
+        && new_version.minor == old_version.minor
+        && new_version.patch <= old_version.patch
+    {
+        return Err(Error::InvalidUpgrade);
+    }
+
+    // Ensure version jump is reasonable (no major jumps without proper process)
+    if new_version.major > old_version.major + 1 {
+        return Err(Error::InvalidUpgrade);
+    }
+
+    Ok(())
+}
+
+// ─── Contract ──────────────────────────────────────────────────────────────────
+
+#[contract]
+pub struct UpgradeContract;
+
+#[contractimpl]
+impl UpgradeContract {
+    /// Get the current contract version
+    pub fn get_version(env: Env) -> ContractVersion {
+        get_contract_version(&env)
+    }
+
+    /// Get current upgrade status
+    pub fn get_upgrade_status(env: Env) -> UpgradeStatus {
+        get_upgrade_status(&env)
+    }
+
+    /// Set multisig contract
+    pub fn set_multisig_contract(
+        env: Env,
+        caller: Address,
+        multisig_contract: Address,
+    ) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        env.storage()
+            .persistent()
+            .set(&DataKey::MultiSigContract, &multisig_contract);
+        Ok(())
+    }
+
+    pub fn set_timelock_contract(
+        env: Env,
+        caller: Address,
+        timelock_contract: Address,
+    ) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        env.storage()
+            .persistent()
+            .set(&DataKey::TimelockContract, &timelock_contract);
+        Ok(())
+    }
+
+    /// Get current upgrade information
+    pub fn get_upgrade_info(env: Env) -> Option<UpgradeInfo> {
+        get_upgrade_info(&env)
+    }
+
+    /// Check if emergency pause is active
+    pub fn is_emergency_paused(env: Env) -> bool {
+        get_emergency_pause(&env)
+    }
+
+    /// Initiate an upgrade process
+    /// Only admin can call this
+    pub fn initiate_upgrade(
+        env: Env,
+        caller: Address,
+        new_version: ContractVersion,
+        new_contract_address: Address,
+        migration_required: bool,
+    ) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+        require_not_emergency_paused(&env)?;
+
+        let current_version = get_contract_version(&env);
+        validate_version_upgrade(&current_version, &new_version)?;
+
+        // Check if there's already an upgrade in progress
+        let current_status = get_upgrade_status(&env);
+        if matches!(current_status, UpgradeStatus::InProgress) {
+            return Err(Error::UpgradeInProgress);
+        }
+
+        // Create upgrade info
+        let upgrade_info = UpgradeInfo {
+            new_version: new_version.clone(),
+            new_contract_address,
+            upgrade_timestamp: env.ledger().timestamp(),
+            upgraded_by: caller.clone(),
+            migration_required,
+        };
+
+        // Set upgrade status to in progress
+        set_upgrade_status(&env, &UpgradeStatus::InProgress);
+        set_upgrade_info(&env, &upgrade_info);
+
+        UpgradeInitiated {
+            current_version,
+            new_version,
+            caller,
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+
+    /// Complete an upgrade process
+    /// Only admin can call this
+    pub fn complete_upgrade(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let upgrade_status = get_upgrade_status(&env);
+        if !matches!(upgrade_status, UpgradeStatus::InProgress) {
+            return Err(Error::NoUpgradeInProgress);
+        }
+
+        let upgrade_info = get_upgrade_info(&env).ok_or(Error::NotInitialized)?;
+
+        // Update contract version
+        set_contract_version(&env, &upgrade_info.new_version);
+
+        // Mark upgrade as completed
+        set_upgrade_status(&env, &UpgradeStatus::Completed);
+
+        UpgradeCompleted {
+            new_version: upgrade_info.new_version,
+            new_contract_address: upgrade_info.new_contract_address,
+            caller,
+        }
+        .publish(&env);
+
+        Ok(())
+    }
+
+    /// Fail an upgrade process
+    /// Only admin can call this
+    pub fn fail_upgrade(env: Env, caller: Address, reason: Symbol) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let upgrade_status = get_upgrade_status(&env);
+        if !matches!(upgrade_status, UpgradeStatus::InProgress) {
+            return Err(Error::NoUpgradeInProgress);
+        }
+
+        // Mark upgrade as failed
+        set_upgrade_status(&env, &UpgradeStatus::Failed);
+
+        UpgradeFailed { caller, reason }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Emergency pause all operations
+    /// Only admin can call this
+    pub fn emergency_pause(env: Env, caller: Address, reason: Symbol) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        if get_emergency_pause(&env) {
+            return Err(Error::EmergencyPaused);
+        }
+
+        // Set emergency pause
+        let paused_true = true;
+        set_emergency_pause(&env, &paused_true);
+
+        // Also pause the main contract if available
+        if let Some(main_contract) = get_main_contract(&env) {
+            let main_client = ChainLogisticsContractClient::new(&env, &main_contract);
+            let _ = main_client.try_pause(&caller);
+        }
+
+        EmergencyPause { caller, reason }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Emergency unpause all operations
+    /// Only admin can call this
+    pub fn emergency_unpause(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        if !get_emergency_pause(&env) {
+            return Err(Error::NotEmergencyPaused);
+        }
+
+        // Clear emergency pause
+        let paused_false = false;
+        set_emergency_pause(&env, &paused_false);
+
+        // Also unpause the main contract if available
+        if let Some(main_contract) = get_main_contract(&env) {
+            let main_client = ChainLogisticsContractClient::new(&env, &main_contract);
+            let _ = main_client.try_unpause(&caller);
+        }
+
+        EmergencyUnpause { caller }.publish(&env);
+
+        Ok(())
+    }
+
+    /// Reset upgrade status (for recovery from failed upgrades)
+    /// Only admin can call this
+    pub fn reset_upgrade_status(env: Env, caller: Address) -> Result<(), Error> {
+        require_admin(&env, &caller)?;
+
+        let upgrade_status = get_upgrade_status(&env);
+        if matches!(upgrade_status, UpgradeStatus::InProgress) {
+            return Err(Error::UpgradeInProgress);
+        }
+
+        // Clear upgrade info and reset status
+        env.storage().persistent().remove(&DataKey::UpgradeInfo);
+        set_upgrade_status(&env, &UpgradeStatus::NotStarted);
+
+        UpgradeReset { caller }.publish(&env);
+
+        Ok(())
+    }
+}
+
+#[cfg(test)]
+mod test_upgrade {
+    use super::*;
+    use soroban_sdk::{testutils::Address as _, Address, Env};
+
+    use crate::{AuthorizationContract, ChainLogisticsContract, ChainLogisticsContractClient};
+
+    fn setup(env: &Env) -> (UpgradeContractClient<'_>, Address) {
+        let contract_id = env.register_contract(None, UpgradeContract);
+        let client = UpgradeContractClient::new(env, &contract_id);
+        let admin = Address::generate(env);
+
+        let auth_id = env.register_contract(None, AuthorizationContract);
+        let cl_id = env.register_contract(None, ChainLogisticsContract);
+        let cl_client = ChainLogisticsContractClient::new(env, &cl_id);
+        cl_client.init(&admin, &auth_id);
+
+        // Set up admin and main contract references in the upgrade contract context
+        let upgrade_contract_address = contract_id;
+        env.as_contract(&upgrade_contract_address, || {
+            env.storage().persistent().set(&DataKey::Admin, &admin);
+            env.storage()
+                .persistent()
+                .set(&DataKey::MainContract, &cl_id);
+        });
+
+        (client, admin)
+    }
+
+    #[test]
+    fn test_version_tracking() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, _admin) = setup(&env);
+
+        // Initial version should be 1.0.0
+        let version = client.get_version();
+        assert_eq!(version.major, 1);
+        assert_eq!(version.minor, 0);
+        assert_eq!(version.patch, 0);
+    }
+
+    #[test]
+    fn test_emergency_pause_unpause() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+
+        // Initially not paused
+        assert!(!client.is_emergency_paused());
+
+        // Emergency pause
+        client.emergency_pause(&admin, &Symbol::new(&env, "test"));
+        assert!(client.is_emergency_paused());
+
+        // Emergency unpause
+        client.emergency_unpause(&admin);
+        assert!(!client.is_emergency_paused());
+    }
+
+    #[test]
+    fn test_upgrade_flow() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+
+        // Initial status
+        assert_eq!(client.get_upgrade_status(), UpgradeStatus::NotStarted);
+        assert!(client.get_upgrade_info().is_none());
+
+        // Initiate upgrade
+        let new_version = ContractVersion {
+            major: 1,
+            minor: 1,
+            patch: 0,
+        };
+        let new_contract = Address::generate(&env);
+        client.initiate_upgrade(&admin, &new_version, &new_contract, &false);
+
+        // Check upgrade status
+        assert_eq!(client.get_upgrade_status(), UpgradeStatus::InProgress);
+        let upgrade_info = client.get_upgrade_info().unwrap();
+        assert_eq!(upgrade_info.new_version, new_version);
+        assert_eq!(upgrade_info.upgraded_by, admin);
+
+        // Complete upgrade
+        client.complete_upgrade(&admin);
+
+        // Check final state
+        assert_eq!(client.get_upgrade_status(), UpgradeStatus::Completed);
+        let current_version = client.get_version();
+        assert_eq!(current_version, new_version);
+    }
+
+    #[test]
+    fn test_upgrade_validation() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, admin) = setup(&env);
+
+        // Try to downgrade (should fail)
+        let old_version = ContractVersion {
+            major: 0,
+            minor: 9,
+            patch: 0,
+        };
+        let new_contract = Address::generate(&env);
+        let res = client.try_initiate_upgrade(&admin, &old_version, &new_contract, &false);
+        assert_eq!(res, Err(Ok(Error::InvalidUpgrade)));
+
+        // Try major version jump (should fail)
+        let jump_version = ContractVersion {
+            major: 3,
+            minor: 0,
+            patch: 0,
+        };
+        let res = client.try_initiate_upgrade(&admin, &jump_version, &new_contract, &false);
+        assert_eq!(res, Err(Ok(Error::InvalidUpgrade)));
+    }
+
+    #[test]
+    fn test_unauthorized_access() {
+        let env = Env::default();
+        env.mock_all_auths();
+
+        let (client, _admin) = setup(&env);
+        let attacker = Address::generate(&env);
+
+        // Unauthorized upgrade attempt should fail
+        let new_version = ContractVersion {
+            major: 1,
+            minor: 1,
+            patch: 0,
+        };
+        let new_contract = Address::generate(&env);
+        let res = client.try_initiate_upgrade(&attacker, &new_version, &new_contract, &false);
+        assert!(res.is_err());
+
+        // Unauthorized emergency pause should fail
+        let res = client.try_emergency_pause(&attacker, &Symbol::new(&env, "test"));
+        assert!(res.is_err());
+    }
+}
diff --git a/smart-contract/contracts/src/validation.rs b/smart-contract/contracts/src/validation.rs
new file mode 100644
index 00000000..02ed95b9
--- /dev/null
+++ b/smart-contract/contracts/src/validation.rs
@@ -0,0 +1,12 @@
+#![allow(dead_code)]
+use soroban_sdk::String;
+
+use crate::validation_contract::ValidationContract;
+
+pub fn non_empty(s: &String) -> bool {
+    ValidationContract::non_empty(s).is_ok()
+}
+
+pub fn max_len(s: &String, max: u32) -> bool {
+    ValidationContract::max_len(s, max).is_ok()
+}
diff --git a/smart-contract/contracts/src/validation_contract.rs b/smart-contract/contracts/src/validation_contract.rs
new file mode 100644
index 00000000..abcb922a
--- /dev/null
+++ b/smart-contract/contracts/src/validation_contract.rs
@@ -0,0 +1,203 @@
+#![allow(clippy::len_zero)]
+use soroban_sdk::{Address, Env, Map, String, Symbol};
+
+use crate::error::Error;
+use crate::types::ProductConfig;
+
+pub struct ValidationContract;
+
+impl ValidationContract {
+    // --- String length limits ---
+    pub const MAX_PRODUCT_ID_LEN: u32 = 64;
+    pub const MAX_PRODUCT_NAME_LEN: u32 = 128;
+    pub const MAX_ORIGIN_LEN: u32 = 128;
+    pub const MAX_CATEGORY_LEN: u32 = 64;
+    pub const MAX_DESCRIPTION_LEN: u32 = 512;
+    pub const MAX_TAG_LEN: u32 = 64;
+    pub const MAX_CUSTOM_VALUE_LEN: u32 = 256;
+    pub const MAX_NOTE_LEN: u32 = 512;
+    pub const MAX_LOCATION_LEN: u32 = 128;
+
+    // --- Array / collection size limits ---
+    pub const MAX_TAGS: u32 = 20;
+    pub const MAX_CERTIFICATIONS: u32 = 50;
+    pub const MAX_MEDIA_HASHES: u32 = 50;
+    pub const MAX_CUSTOM_FIELDS: u32 = 20;
+    pub const MAX_METADATA_FIELDS: u32 = 20;
+    pub const MAX_PAGE_LIMIT: u64 = 1_000;
+
+    // --- Primitive validators ---
+    pub fn non_empty(s: &String) -> Result<(), Error> {
+        if s.len() < 1 {
+            return Err(Error::InvalidInput);
+        }
+        Ok(())
+    }
+
+    pub fn max_len(s: &String, max: u32) -> Result<(), Error> {
+        if s.len() > max {
+            return Err(Error::InvalidInput);
+        }
+        Ok(())
+    }
+
+    #[allow(dead_code)]
+    pub fn require_auth(actor: &Address) -> Result<(), Error> {
+        actor.require_auth();
+        Ok(())
+    }
+
+    pub fn validate_contract_address(env: &Env, address: &Address) -> Result<(), Error> {
+        if *address == env.current_contract_address() {
+            return Err(Error::InvalidAddress);
+        }
+        Ok(())
+    }
+
+    pub fn validate_distinct_addresses(a: &Address, b: &Address) -> Result<(), Error> {
+        if a == b {
+            return Err(Error::InvalidAddress);
+        }
+        Ok(())
+    }
+
+    pub fn validate_event_type(env: &Env, event_type: &Symbol) -> Result<(), Error> {
+        if *event_type == Symbol::new(env, "") {
+            return Err(Error::InvalidInput);
+        }
+        Ok(())
+    }
+
+    pub fn validate_pagination_limit(limit: u64, max: u64) -> Result<(), Error> {
+        if limit == 0 || limit > max {
+            return Err(Error::InvalidInput);
+        }
+        Ok(())
+    }
+
+    pub fn validate_time_range(env: &Env, start_time: u64, end_time: u64) -> Result<(), Error> {
+        let now = env.ledger().timestamp();
+        if end_time == u64::MAX {
+            if start_time > now {
+                return Err(Error::InvalidTimestamp);
+            }
+            return Ok(());
+        }
+        if start_time > end_time || end_time > now {
+            return Err(Error::InvalidTimestamp);
+        }
+        Ok(())
+    }
+
+    // --- Product validation ---
+    pub fn validate_product_config(config: &ProductConfig) -> Result<(), Error> {
+        if config.id.len() < 1 {
+            return Err(Error::InvalidProductId);
+        }
+        if config.id.len() > Self::MAX_PRODUCT_ID_LEN {
+            return Err(Error::ProductIdTooLong);
+        }
+
+        if config.name.len() < 1 {
+            return Err(Error::InvalidProductName);
+        }
+        if config.name.len() > Self::MAX_PRODUCT_NAME_LEN {
+            return Err(Error::ProductNameTooLong);
+        }
+
+        if config.origin_location.len() < 1 {
+            return Err(Error::InvalidOrigin);
+        }
+        if config.origin_location.len() > Self::MAX_ORIGIN_LEN {
+            return Err(Error::OriginTooLong);
+        }
+
+        if config.category.len() < 1 {
+            return Err(Error::InvalidCategory);
+        }
+        if config.category.len() > Self::MAX_CATEGORY_LEN {
+            return Err(Error::CategoryTooLong);
+        }
+
+        if config.description.len() > Self::MAX_DESCRIPTION_LEN {
+            return Err(Error::DescriptionTooLong);
+        }
+
+        if config.tags.len() > Self::MAX_TAGS {
+            return Err(Error::TooManyTags);
+        }
+        for i in 0..config.tags.len() {
+            let t = config.tags.get_unchecked(i);
+            if t.len() > Self::MAX_TAG_LEN {
+                return Err(Error::TagTooLong);
+            }
+        }
+
+        if config.certifications.len() > Self::MAX_CERTIFICATIONS {
+            return Err(Error::TooManyCertifications);
+        }
+
+        if config.media_hashes.len() > Self::MAX_MEDIA_HASHES {
+            return Err(Error::TooManyMediaHashes);
+        }
+
+        Self::validate_custom_fields(&config.custom)
+    }
+
+    pub fn validate_deactivation_reason(reason: &String) -> Result<(), Error> {
+        if reason.len() < 1 {
+            return Err(Error::DeactivationReasonRequired);
+        }
+        Ok(())
+    }
+
+    // --- Custom fields / metadata validation ---
+    pub fn validate_custom_fields(custom: &Map<Symbol, String>) -> Result<(), Error> {
+        if custom.len() > Self::MAX_CUSTOM_FIELDS {
+            return Err(Error::TooManyCustomFields);
+        }
+
+        let keys = custom.keys();
+        for i in 0..keys.len() {
+            let k = keys.get_unchecked(i);
+            let v = custom.get_unchecked(k);
+            if v.len() > Self::MAX_CUSTOM_VALUE_LEN {
+                return Err(Error::CustomFieldValueTooLong);
+            }
+        }
+
+        Ok(())
+    }
+
+    pub fn validate_metadata(metadata: &Map<Symbol, String>) -> Result<(), Error> {
+        if metadata.len() > Self::MAX_METADATA_FIELDS {
+            return Err(Error::TooManyCustomFields);
+        }
+
+        let keys = metadata.keys();
+        for i in 0..keys.len() {
+            let k = keys.get_unchecked(i);
+            let v = metadata.get_unchecked(k);
+            if v.len() > Self::MAX_CUSTOM_VALUE_LEN {
+                return Err(Error::CustomFieldValueTooLong);
+            }
+        }
+
+        Ok(())
+    }
+
+    // --- Event data validation ---
+    pub fn validate_event_location(location: &String) -> Result<(), Error> {
+        if location.len() > Self::MAX_LOCATION_LEN {
+            return Err(Error::InvalidInput);
+        }
+        Ok(())
+    }
+
+    pub fn validate_event_note(note: &String) -> Result<(), Error> {
+        if note.len() > Self::MAX_NOTE_LEN {
+            return Err(Error::InvalidInput);
+        }
+        Ok(())
+    }
+}
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_get_admin_not_initialized.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_get_admin_not_initialized.1.json
new file mode 100644
index 00000000..53df41d1
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_get_admin_not_initialized.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_init.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_init.1.json
new file mode 100644
index 00000000..be489c94
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_init.1.json
@@ -0,0 +1,314 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_init_already_initialized_fails.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_init_already_initialized_fails.1.json
new file mode 100644
index 00000000..33a56945
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_init_already_initialized_fails.1.json
@@ -0,0 +1,475 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_old_admin_loses_privileges_after_transfer.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_old_admin_loses_privileges_after_transfer.1.json
new file mode 100644
index 00000000..f52d1aaa
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_old_admin_loses_privileges_after_transfer.1.json
@@ -0,0 +1,486 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_admin",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "transfer_admin",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_admin",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "transfer_admin",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "pause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "pause",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4270020994084947596"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_already_paused_fails.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_already_paused_fails.1.json
new file mode 100644
index 00000000..8b3cf3d2
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_already_paused_fails.1.json
@@ -0,0 +1,368 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "pause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "pause",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_unpause.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_unpause.1.json
new file mode 100644
index 00000000..38b2a43c
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_unpause.1.json
@@ -0,0 +1,423 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "pause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "pause",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "unpause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "unpause",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_unpause_unauthorized.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_unpause_unauthorized.1.json
new file mode 100644
index 00000000..48319aca
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_pause_unpause_unauthorized.1.json
@@ -0,0 +1,314 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_transfer_admin.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_transfer_admin.1.json
new file mode 100644
index 00000000..be38ed0b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_transfer_admin.1.json
@@ -0,0 +1,431 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_admin",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "transfer_admin",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_admin",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "transfer_admin",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_transfer_admin_unauthorized.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_transfer_admin_unauthorized.1.json
new file mode 100644
index 00000000..853ccb1e
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_transfer_admin_unauthorized.1.json
@@ -0,0 +1,313 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/admin/test_admin/test_unpause_not_paused_fails.1.json b/smart-contract/contracts/test_snapshots/admin/test_admin/test_unpause_not_paused_fails.1.json
new file mode 100644
index 00000000..be489c94
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/admin/test_admin/test_unpause_not_paused_fails.1.json
@@ -0,0 +1,314 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "admin_init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/authorization/test_authorization/test_init_product_owner_requires_trusted_initializer.1.json b/smart-contract/contracts/test_snapshots/authorization/test_authorization/test_init_product_owner_requires_trusted_initializer.1.json
new file mode 100644
index 00000000..99da39c3
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/authorization/test_authorization/test_init_product_owner_requires_trusted_initializer.1.json
@@ -0,0 +1,159 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init_product_owner",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_empty_product_boundary_conditions.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_empty_product_boundary_conditions.1.json
new file mode 100644
index 00000000..c98a9171
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_empty_product_boundary_conditions.1.json
@@ -0,0 +1,892 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "EMPTY_PROD"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "EMPTY_PROD"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "EMPTY_PROD"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "EMPTY_PROD"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "EMPTY_PROD"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "EMPTY_PROD"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "EMPTY_PROD"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "EMPTY_PROD"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "EMPTY_PROD"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count.1.json
new file mode 100644
index 00000000..9ab8fa57
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count.1.json
@@ -0,0 +1,1388 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "shipped"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count_by_type.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count_by_type.1.json
new file mode 100644
index 00000000..0f8e5224
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count_by_type.1.json
@@ -0,0 +1,1582 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
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+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "3"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  },
+                  {
+                    "u64": "3"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count_not_found.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count_not_found.1.json
new file mode 100644
index 00000000..65b7a6f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_event_count_not_found.1.json
@@ -0,0 +1,395 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_events_by_time_range.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_events_by_time_range.1.json
new file mode 100644
index 00000000..091be6e0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_events_by_time_range.1.json
@@ -0,0 +1,1387 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
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+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_events_by_type.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_events_by_type.1.json
new file mode 100644
index 00000000..8fa11d68
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_events_by_type.1.json
@@ -0,0 +1,1610 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "received"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "shipped"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "3"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "3"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "received"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "3"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "received"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "received"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "3"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  },
+                  {
+                    "u64": "3"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_filtered_events.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_filtered_events.1.json
new file mode 100644
index 00000000..091be6e0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_filtered_events.1.json
@@ -0,0 +1,1387 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
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+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_product_events_empty.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_product_events_empty.1.json
new file mode 100644
index 00000000..942c20c2
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_product_events_empty.1.json
@@ -0,0 +1,889 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
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+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
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+        }
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                ]
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+              "durability": "persistent",
+              "val": {
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+          "ext": "v0"
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
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+                    "symbol": "Owner"
+                  },
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+                    "string": "PROD1"
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+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
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+              "val": {
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+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                  },
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+                }
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+          },
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
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+                      "key": {
+                        "vec": [
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+                            "symbol": "ActiveProducts"
+                          }
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+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
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+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
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+                      "val": {
+                        "u64": "1"
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+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_product_events_not_found.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_product_events_not_found.1.json
new file mode 100644
index 00000000..65b7a6f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_get_product_events_not_found.1.json
@@ -0,0 +1,395 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_init_already_initialized_fails.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_init_already_initialized_fails.1.json
new file mode 100644
index 00000000..65b7a6f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_init_already_initialized_fails.1.json
@@ -0,0 +1,395 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_pagination.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_pagination.1.json
new file mode 100644
index 00000000..5de261ab
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_pagination.1.json
@@ -0,0 +1,1938 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
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+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "8370022561469687789"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_pagination_boundary_conditions.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_pagination_boundary_conditions.1.json
new file mode 100644
index 00000000..d7fdf862
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_pagination_boundary_conditions.1.json
@@ -0,0 +1,1941 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
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+                    "val": {
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+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
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+                      "string": "Test Location"
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+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
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+                      "string": "Test Location"
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+        "live_until": 4095
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+              "durability": "persistent",
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+                      "symbol": "actor"
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+                    "val": {
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+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                ]
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+              "durability": "persistent",
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+        "live_until": 4095
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
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+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                ]
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+              "durability": "persistent",
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+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+              "durability": "persistent",
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+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+              "durability": "persistent",
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+          },
+          "ext": "v0"
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+        "live_until": 4095
+      },
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
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+        "live_until": 4095
+      },
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+          "data": {
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+              "key": {
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+              "durability": "persistent",
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+                "u64": "5"
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+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
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+                  {
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+                  {
+                    "u64": "3"
+                  },
+                  {
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+                  {
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+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
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+              "val": "void"
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+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
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+              "durability": "temporary",
+              "val": "void"
+            }
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+          "ext": "v0"
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+        "live_until": 6311999
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4270020994084947596"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "8370022561469687789"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_query_before_init_fails.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_query_before_init_fails.1.json
new file mode 100644
index 00000000..53df41d1
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_query_before_init_fails.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_query_boundary_conditions_with_validation.1.json b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_query_boundary_conditions_with_validation.1.json
new file mode 100644
index 00000000..29dd6dc7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/event_query/test_event_query/test_query_boundary_conditions_with_validation.1.json
@@ -0,0 +1,1389 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Test Location"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Test note"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "shipped"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Test Location"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Test note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
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+                  },
+                  {
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+                    "symbol": "created"
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
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+              "durability": "persistent",
+              "val": {
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+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
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+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
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+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
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+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "vec": [
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+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
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+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
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+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_event_count.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_event_count.1.json
new file mode 100644
index 00000000..3ce58154
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_event_count.1.json
@@ -0,0 +1,1550 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
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+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
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+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
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+                        "symbol": "tags"
+                      },
+                      "val": {
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+                      }
+                    }
+                  ]
+                }
+              ]
+            }
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+          "sub_invocations": []
+        }
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+                    {
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+                "durability": "persistent",
+                "val": {
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+            "ext": "v0"
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+        ]
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+            "durability": "persistent"
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+        },
+        [
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+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                "durability": "persistent",
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+            "durability": "persistent"
+          }
+        },
+        [
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+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                "durability": "persistent",
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+            "key": {
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+                {
+                  "symbol": "AuthContract"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
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+                    {
+                      "symbol": "AuthContract"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
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+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
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+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
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+            },
+            "ext": "v0"
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+        ]
+      ],
+      [
+        {
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+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
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+                  "symbol": "Product"
+                },
+                {
+                  "string": "PROD1"
+                }
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "PROD1"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
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+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
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+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
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+                    },
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+                        "symbol": "tags"
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+                      "val": {
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+                    }
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+        ]
+      ],
+      [
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+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
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+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
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+                "val": "void"
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+                {
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+    },
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+        "contract_id": null,
+        "type_": "diagnostic",
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+              },
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+              },
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+        "type_": "diagnostic",
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+          }
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+    },
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+        "type_": "diagnostic",
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+                      "val": {
+                        "string": "Category"
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+                        "symbol": "certifications"
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+                      "val": {
+                        "string": "Description"
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+                        "symbol": "media_hashes"
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+                      "val": {
+                        "vec": []
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+                      "val": {
+                        "string": "Test Product"
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+                    {
+                      "key": {
+                        "symbol": "origin_location"
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+                      "val": {
+                        "string": "Origin"
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+                        "symbol": "tags"
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+                        "vec": []
+                      }
+                    }
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+            }
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+        }
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+      "failed_call": false
+    },
+    {
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+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
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+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init_product_owner"
+              }
+            ],
+            "data": {
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+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
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+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init_product_owner"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
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+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "contract",
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+                "symbol": "product_registered"
+              },
+              {
+                "string": "PROD1"
+              }
+            ],
+            "data": {
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+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
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+                },
+                {
+                  "key": {
+                    "symbol": "category"
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+                  "val": {
+                    "string": "Category"
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+                },
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+                    "symbol": "certifications"
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+                  "val": {
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+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000003"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "string": "PROD1"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
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+                "symbol": "fn_call"
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+                "symbol": "get_product"
+              }
+            ],
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+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
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+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
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+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
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+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "string": "PROD1"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "u64": 0
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "u64": 0
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_event_count_not_found.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_event_count_not_found.1.json
new file mode 100644
index 00000000..4ca0ffac
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_event_count_not_found.1.json
@@ -0,0 +1,802 @@
+{
+  "generators": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                "key": {
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+                    "nonce": 801925984706572462
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+                "durability": "temporary",
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+        {
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+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
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+            "ext": "v0"
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+          4095
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+  "events": [
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+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
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+              {
+                "symbol": "init"
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+            "data": {
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
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+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
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+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
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+              },
+              {
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+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
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+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000005"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000005"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "string": "NONEXISTENT"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "NONEXISTENT"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NONEXISTENT"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_event_count"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NONEXISTENT"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product.1.json
new file mode 100644
index 00000000..de0dcd18
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product.1.json
@@ -0,0 +1,1428 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
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+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
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+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
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+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
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+                        "val": {
+                          "string": "Origin"
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+                {
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+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
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+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
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+                {
+                  "key": {
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+                  },
+                  "val": {
+                    "string": "Category"
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+                {
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+                    "symbol": "certifications"
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+                  "val": {
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+                {
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+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_event_ids.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_event_ids.1.json
new file mode 100644
index 00000000..0a7400c2
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_event_ids.1.json
@@ -0,0 +1,1550 @@
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+                      "val": {
+                        "string": "Category"
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+                        "symbol": "media_hashes"
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+                      "val": {
+                        "string": "Test Product"
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+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
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+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
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+              {
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+              }
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+            "data": {
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+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
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+            }
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+        }
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+      "failed_call": false
+    },
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+                "symbol": "fn_return"
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+              {
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+            "data": "void"
+          }
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+      "failed_call": false
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+                  "val": {
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+                {
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+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
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+                {
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+                    "symbol": "id"
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+                  "val": {
+                    "string": "PROD1"
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+                  }
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+                {
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+                    "symbol": "name"
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+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
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+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
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+      "failed_call": false
+    },
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+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
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+                "symbol": "fn_return"
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+              {
+                "symbol": "register_product"
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+                    "symbol": "active"
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+                  "val": {
+                    "bool": true
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+                    "symbol": "category"
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+                  "val": {
+                    "string": "Category"
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+                  }
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+                    "string": "Test Product"
+                  }
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+                {
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+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
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+                    ]
+                  }
+                },
+                {
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+                    "symbol": "owner"
+                  },
+                  "val": {
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+                  }
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+                {
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+                  "val": {
+                    "vec": []
+                  }
+                }
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+            }
+          }
+        }
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+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
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+                "symbol": "fn_call"
+              },
+              {
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+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "string": "PROD1"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
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+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
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+        "type_": "diagnostic",
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+                "symbol": "fn_return"
+              },
+              {
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+                  "val": {
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+                  "val": {
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+                  "val": {
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+                    "symbol": "deactivation_info"
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+                  "val": {
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+                  }
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+                {
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+                    "symbol": "description"
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+                  "val": {
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+                  "val": {
+                    "string": "PROD1"
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+                },
+                {
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+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
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+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
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+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "vec": []
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "vec": []
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_event_ids_not_found.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_event_ids_not_found.1.json
new file mode 100644
index 00000000..6edd5702
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_event_ids_not_found.1.json
@@ -0,0 +1,802 @@
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+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "MainContract"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "MainContract"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000003"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000005"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000005"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "string": "NONEXISTENT"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "NONEXISTENT"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NONEXISTENT"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000005",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product_event_ids"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NONEXISTENT"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_not_found.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_not_found.1.json
new file mode 100644
index 00000000..22e34f1e
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_product_not_found.1.json
@@ -0,0 +1,544 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "MainContract"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "MainContract"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
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+            "key": {
+              "vec": [
+                {
+                  "symbol": "MainContract"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
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+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "MainContract"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
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+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000002"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000003"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000003"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "NONEXISTENT"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "NONEXISTENT"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NONEXISTENT"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
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+              },
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+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
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+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
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+              },
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+            "data": {
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+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_stats.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_stats.1.json
new file mode 100644
index 00000000..8cc49548
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_get_stats.1.json
@@ -0,0 +1,1359 @@
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+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "PROD1"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000003"
+              },
+              {
+                "symbol": "get_stats"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_stats"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_stats"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active_products"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_products"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_stats"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active_products"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_products"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_init_already_initialized_fails.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_init_already_initialized_fails.1.json
new file mode 100644
index 00000000..7e84e6a3
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_init_already_initialized_fails.1.json
@@ -0,0 +1,233 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_product_exists.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_product_exists.1.json
new file mode 100644
index 00000000..3f8178dc
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_product_exists.1.json
@@ -0,0 +1,1479 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "PROD1"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "PROD1"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
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+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NONEXISTENT"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000003",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "product_exists"
+              }
+            ],
+            "data": {
+              "bool": false
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_before_init_fails.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_before_init_fails.1.json
new file mode 100644
index 00000000..53df41d1
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_before_init_fails.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product.1.json
new file mode 100644
index 00000000..84aecd20
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product.1.json
@@ -0,0 +1,727 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
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+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
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+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product_exists.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product_exists.1.json
new file mode 100644
index 00000000..0da42714
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product_exists.1.json
@@ -0,0 +1,728 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
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+              "val": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+              "durability": "persistent",
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
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+                  }
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+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "AuthContract"
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
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+        },
+        "live_until": 4095
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                  {
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+                    "val": {
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+                    "val": {
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+                    }
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+                    },
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+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
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+                    }
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+                    "val": {
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+                    }
+                  }
+                ]
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+            }
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+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
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+        },
+        "live_until": 4095
+      },
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                    "symbol": "SearchIndex"
+                  },
+                  {
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+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
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+              "durability": "persistent",
+              "val": {
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+                    "string": "PROD1"
+                  }
+                ]
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
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+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
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+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product_not_found.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product_not_found.1.json
new file mode 100644
index 00000000..7e84e6a3
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_product_not_found.1.json
@@ -0,0 +1,233 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
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+                }
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                  },
+                  "storage": null
+                }
+              }
+            }
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+        },
+        "live_until": 4095
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_stats.1.json b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_stats.1.json
new file mode 100644
index 00000000..284ecd48
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_query/test_product_query/test_query_stats.1.json
@@ -0,0 +1,728 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
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+                        "string": "Description"
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+                        "vec": []
+                      }
+                    },
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+                      },
+                      "val": {
+                        "string": "Test Product"
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+                        "symbol": "origin_location"
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+                      }
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+    "sequence_number": 0,
+    "timestamp": 0,
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+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
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+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "Product"
+                  },
+                  {
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+                  }
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+                    "val": {
+                      "u64": "0"
+                    }
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+                    }
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+                    }
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+                    }
+                  },
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+                      "string": "Test Product"
+                    }
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+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
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+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
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+                      "symbol": "tags"
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+                    }
+                  }
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "key": {
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+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                  },
+                  {
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+                      {
+                        "string": "Category"
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+              "durability": "persistent",
+              "val": {
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+                    "string": "PROD1"
+                  }
+                ]
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+            }
+          },
+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
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+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
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+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
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+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_boundary_conditions.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_boundary_conditions.1.json
new file mode 100644
index 00000000..956bb32e
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_boundary_conditions.1.json
@@ -0,0 +1,369 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "batch_transfer_products",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "PROD"
+                    },
+                    {
+                      "string": "PROD"
+                    },
+                    {
+                      "string": "PROD"
+                    },
+                    {
+                      "string": "PROD"
+                    },
+                    {
+                      "string": "PROD"
+                    }
+                  ]
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "batch_transfer_products",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "PROD"
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+                    {
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+                    },
+                    {
+                      "string": "PROD"
+                    },
+                    {
+                      "string": "PROD"
+                    },
+                    {
+                      "string": "PROD"
+                    }
+                  ]
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
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+        "live_until": 4095
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
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+        "live_until": 4095
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                    "symbol": "AuthContract"
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+              "durability": "persistent",
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+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
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+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "TransferContract"
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+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
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+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
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+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
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+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "batch_transfer"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4270020994084947596"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_empty_fails.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_empty_fails.1.json
new file mode 100644
index 00000000..3fa1377d
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_empty_fails.1.json
@@ -0,0 +1,182 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_products.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_products.1.json
new file mode 100644
index 00000000..d28b5cfd
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_products.1.json
@@ -0,0 +1,1324 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "batch_transfer_products",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "string": "PROD2"
+                    }
+                  ]
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                  "function_name": "update_product_owner",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            },
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                  "function_name": "update_product_owner",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    },
+                    {
+                      "string": "PROD2"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "batch_transfer_products",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "string": "PROD2"
+                    }
+                  ]
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ]
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
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+                          "key": {
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+      },
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+      },
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+                  {
+                    "string": "PROD2"
+                  }
+                ]
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+            }
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+        },
+        "live_until": 4095
+      },
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+        "entry": {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                  },
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+                        "string": "Origin"
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+              "durability": "persistent",
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+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
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+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "SearchIndex"
+                  },
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+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
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+                  {
+                    "string": "PROD2"
+                  }
+                ]
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+        },
+        "live_until": 4095
+      },
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+          "data": {
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+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+                  },
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+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
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+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
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+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
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+                      "val": {
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+                      }
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+                }
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "batch_transfer"
+                          }
+                        ]
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+                      "val": {
+                        "bool": false
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
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+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
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+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "from"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "to"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "from"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD2"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "to"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_with_nonexistent_products.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_with_nonexistent_products.1.json
new file mode 100644
index 00000000..d94f7127
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_with_nonexistent_products.1.json
@@ -0,0 +1,1336 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
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+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
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+                    {
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+                        "symbol": "category"
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+                      "val": {
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+                    },
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+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
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+                        "symbol": "custom"
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+                      "val": {
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+                      }
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+                      "val": {
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+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
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+                        "symbol": "origin_location"
+                      },
+                      "val": {
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+                      }
+                    },
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+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+        {
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+              "function_name": "batch_transfer_products",
+              "args": [
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
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+                      "string": "NONEXISTENT"
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+                    {
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+                }
+              ]
+            }
+          },
+          "sub_invocations": [
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+                    },
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+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            },
+            {
+              "function": {
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+                  "function_name": "update_product_owner",
+                  "args": [
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+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    },
+                    {
+                      "string": "PROD2"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
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+              "function_name": "batch_transfer_products",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "string": "NONEXISTENT"
+                    },
+                    {
+                      "string": "PROD2"
+                    },
+                    {
+                      "string": "ALSO_NONEXISTENT"
+                    }
+                  ]
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ]
+  ],
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+    "max_entry_ttl": 6312000,
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+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
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+                    "val": {
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+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
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+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
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+                    }
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+                  {
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+                  {
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+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
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+                  }
+                ]
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+        },
+        "live_until": 4095
+      },
+      {
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+                    "symbol": "ProductEventIds"
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+                    "string": "PROD1"
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+              }
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+                ]
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+      },
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+                  {
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+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                    "symbol": "SearchIndex"
+                  },
+                  {
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+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
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+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
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+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "batch_transfer"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
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+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              }
+            ],
+            "data": {
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+                {
+                  "key": {
+                    "symbol": "from"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "to"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              }
+            ],
+            "data": {
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+                {
+                  "key": {
+                    "symbol": "from"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD2"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "to"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_with_unowned_products.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_with_unowned_products.1.json
new file mode 100644
index 00000000..a3735f5f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_batch_transfer_with_unowned_products.1.json
@@ -0,0 +1,1259 @@
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "batch_transfer"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "from"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "to"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAOLZM"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_get_product_owner_not_found.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_get_product_owner_not_found.1.json
new file mode 100644
index 00000000..b031de48
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_get_product_owner_not_found.1.json
@@ -0,0 +1,182 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_init_already_initialized_fails.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_init_already_initialized_fails.1.json
new file mode 100644
index 00000000..b031de48
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_init_already_initialized_fails.1.json
@@ -0,0 +1,182 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_is_product_owner.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_is_product_owner.1.json
new file mode 100644
index 00000000..778cc75f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_is_product_owner.1.json
@@ -0,0 +1,727 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_new_owner_authentication_required.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_new_owner_authentication_required.1.json
new file mode 100644
index 00000000..a3247fb9
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_new_owner_authentication_required.1.json
@@ -0,0 +1,851 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                  "function_name": "update_product_owner",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "transfer_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_only_owner_can_transfer.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_only_owner_can_transfer.1.json
new file mode 100644
index 00000000..a8eec19f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_only_owner_can_transfer.1.json
@@ -0,0 +1,726 @@
+{
+  "generators": {
+    "address": 7,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
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+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
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+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_before_init_fails.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_before_init_fails.1.json
new file mode 100644
index 00000000..16ec5629
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_before_init_fails.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_nonexistent_product_fails.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_nonexistent_product_fails.1.json
new file mode 100644
index 00000000..3fa1377d
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_nonexistent_product_fails.1.json
@@ -0,0 +1,182 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_product_ownership.1.json b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_product_ownership.1.json
new file mode 100644
index 00000000..bb249145
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/product_transfer/test_product_transfer/test_transfer_product_ownership.1.json
@@ -0,0 +1,853 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                  "function_name": "update_product_owner",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
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+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
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+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TransferContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "transfer_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_active_products.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_active_products.1.json
new file mode 100644
index 00000000..fdd6409f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_active_products.1.json
@@ -0,0 +1,1166 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "string": "Testing"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "Testing"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
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+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
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+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
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+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
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+        },
+        "live_until": 4095
+      },
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_average_events_per_product.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_average_events_per_product.1.json
new file mode 100644
index 00000000..0f54ec34
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_average_events_per_product.1.json
@@ -0,0 +1,1101 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
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+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
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+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
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+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
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+              "key": {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
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+              "durability": "persistent",
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+      },
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "Auth"
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+                    "string": "PROD2"
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+                  }
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+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
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+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
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+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
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+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
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+                    "val": {
+                      "string": "Category"
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+                    "val": {
+                      "vec": []
+                    }
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+                    "val": {
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+                    }
+                  },
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+                    "val": {
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+                    }
+                  },
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+                    "val": {
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+                  {
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+                    "val": {
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+                    }
+                  },
+                  {
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+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
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+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
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+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_event_type_distribution.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_event_type_distribution.1.json
new file mode 100644
index 00000000..5f0ed3cd
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_event_type_distribution.1.json
@@ -0,0 +1,751 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_event_type_distribution_not_found.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_event_type_distribution_not_found.1.json
new file mode 100644
index 00000000..41d2c723
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_event_type_distribution_not_found.1.json
@@ -0,0 +1,257 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_inactive_products.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_inactive_products.1.json
new file mode 100644
index 00000000..fdd6409f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_inactive_products.1.json
@@ -0,0 +1,1166 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "string": "Testing"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "Testing"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_product_stats.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_product_stats.1.json
new file mode 100644
index 00000000..4ee0a059
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_product_stats.1.json
@@ -0,0 +1,814 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "string": "Testing"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "Testing"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "0"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_product_stats_not_found.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_product_stats_not_found.1.json
new file mode 100644
index 00000000..41d2c723
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_product_stats_not_found.1.json
@@ -0,0 +1,257 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_stats.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_stats.1.json
new file mode 100644
index 00000000..0f54ec34
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_stats.1.json
@@ -0,0 +1,1101 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
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+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
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+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
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+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
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+            }
+          },
+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_total_events.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_total_events.1.json
new file mode 100644
index 00000000..41d2c723
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_total_events.1.json
@@ -0,0 +1,257 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_total_products.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_total_products.1.json
new file mode 100644
index 00000000..65cf81d5
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_get_total_products.1.json
@@ -0,0 +1,1450 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD3"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD3"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD3"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
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+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
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+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD3"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD3"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD3"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "string": "PROD3"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "string": "PROD3"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "string": "PROD2"
+                  },
+                  {
+                    "string": "PROD3"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "3"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "3"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_init_already_initialized_fails.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_init_already_initialized_fails.1.json
new file mode 100644
index 00000000..9211b9eb
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_init_already_initialized_fails.1.json
@@ -0,0 +1,305 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "RegistryContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "TrackingContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/stats/test_stats/test_stats_before_init_fails.1.json b/smart-contract/contracts/test_snapshots/stats/test_stats/test_stats_before_init_fails.1.json
new file mode 100644
index 00000000..53df41d1
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/stats/test_stats/test_stats_before_init_fails.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_authorization_mapping.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_authorization_mapping.1.json
new file mode 100644
index 00000000..9210941a
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_authorization_mapping.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_counters_roundtrip.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_counters_roundtrip.1.json
new file mode 100644
index 00000000..deccea31
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_counters_roundtrip.1.json
@@ -0,0 +1,86 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "7"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "10"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_id_sequence_increments.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_id_sequence_increments.1.json
new file mode 100644
index 00000000..178233d8
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_id_sequence_increments.1.json
@@ -0,0 +1,85 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_put_get.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_put_get.1.json
new file mode 100644
index 00000000..af27555b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_put_get.1.json
@@ -0,0 +1,161 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Loc"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Note"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "P1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_count_consistency.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_count_consistency.1.json
new file mode 100644
index 00000000..04488d12
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_count_consistency.1.json
@@ -0,0 +1,190 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "3"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "100"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "101"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "102"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_indexing_0_based.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_indexing_0_based.1.json
new file mode 100644
index 00000000..04488d12
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_indexing_0_based.1.json
@@ -0,0 +1,190 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "3"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "100"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "101"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "102"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_indexing_no_duplicates.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_indexing_no_duplicates.1.json
new file mode 100644
index 00000000..04488d12
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_event_type_indexing_no_duplicates.1.json
@@ -0,0 +1,190 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "3"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "100"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "101"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  },
+                  {
+                    "symbol": "test_type"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "102"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_pagination_boundary_conditions.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_pagination_boundary_conditions.1.json
new file mode 100644
index 00000000..30ca2cbc
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_pagination_boundary_conditions.1.json
@@ -0,0 +1,104 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "TEST_PRODUCT"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  },
+                  {
+                    "u64": "3"
+                  },
+                  {
+                    "u64": "4"
+                  },
+                  {
+                    "u64": "5"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_pagination_empty_list.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_pagination_empty_list.1.json
new file mode 100644
index 00000000..53df41d1
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_pagination_empty_list.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 1,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_product_put_get.1.json b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_product_put_get.1.json
new file mode 100644
index 00000000..5c993d59
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/storage_contract/test_storage_contract/test_product_put_get.1.json
@@ -0,0 +1,202 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "P1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Cat"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Desc"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "P1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Name"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Loc"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_add_authorized_actor.1.json b/smart-contract/contracts/test_snapshots/test/test_add_authorized_actor.1.json
new file mode 100644
index 00000000..1453a4c4
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_add_authorized_actor.1.json
@@ -0,0 +1,828 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
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+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
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+            "durability": "persistent"
+          }
+        },
+        [
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+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
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+                    },
+                    {
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+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
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+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
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+                    },
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+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "string": "Metadata"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "string": "Nigeria"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
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+                    }
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+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
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+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
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+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
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+                        "key": {
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+                              "symbol": "ActiveProducts"
+                            }
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+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
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+                        "val": {
+                          "u64": 1
+                        }
+                      }
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+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
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+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
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+              {
+                "symbol": "fn_return"
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+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": false
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_add_duplicate_actor_fails.1.json b/smart-contract/contracts/test_snapshots/test/test_add_duplicate_actor_fails.1.json
new file mode 100644
index 00000000..5a45557b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_add_duplicate_actor_fails.1.json
@@ -0,0 +1,589 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "create_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Test Product"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "authorized_actors"
+                      },
+                      "val": {
+                        "vec": [
+                          {
+                            "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ProductCounter"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "create_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Test Product"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product"
+              },
+              {
+                "symbol": "created"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "create_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "auth"
+              },
+              {
+                "symbol": "actradded"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 7
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 7
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 7
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_add_tracking_event_with_metadata.1.json b/smart-contract/contracts/test_snapshots/test/test_add_tracking_event_with_metadata.1.json
new file mode 100644
index 00000000..54be4354
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_add_tracking_event_with_metadata.1.json
@@ -0,0 +1,1620 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Yirgacheffe Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Coffee harvested at peak ripeness"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "batch"
+                      },
+                      "val": {
+                        "string": "B2024-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "humidity"
+                      },
+                      "val": {
+                        "string": "65"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "temperature"
+                      },
+                      "val": {
+                        "string": "22.5"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe Farm"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "batch"
+                            },
+                            "val": {
+                              "string": "B2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "humidity"
+                            },
+                            "val": {
+                              "string": "65"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "temperature"
+                            },
+                            "val": {
+                              "string": "22.5"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Coffee harvested at peak ripeness"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeCount"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeCount"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeIndex"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeIndex"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
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+                "durability": "persistent",
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+            "ext": "v0"
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+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
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+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
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+                        "val": {
+                          "u64": 1
+                        }
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+        [
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+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
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+                "val": "void"
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+      [
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+            "key": {
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+              }
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+            "durability": "temporary"
+          }
+        },
+        [
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+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
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+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
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+            "ext": "v0"
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+          }
+        },
+        [
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+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
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+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
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+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Yirgacheffe Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Coffee harvested at peak ripeness"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "batch"
+                      },
+                      "val": {
+                        "string": "B2024-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "humidity"
+                      },
+                      "val": {
+                        "string": "65"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "temperature"
+                      },
+                      "val": {
+                        "string": "22.5"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 1
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Yirgacheffe Farm"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "batch"
+                        },
+                        "val": {
+                          "string": "B2024-001"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "humidity"
+                        },
+                        "val": {
+                          "string": "65"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "temperature"
+                        },
+                        "val": {
+                          "string": "22.5"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Coffee harvested at peak ripeness"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Yirgacheffe Farm"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "batch"
+                        },
+                        "val": {
+                          "string": "B2024-001"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "humidity"
+                        },
+                        "val": {
+                          "string": "65"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "temperature"
+                        },
+                        "val": {
+                          "string": "22.5"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Coffee harvested at peak ripeness"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_add_tracking_events_batch_success.1.json b/smart-contract/contracts/test_snapshots/test/test_add_tracking_events_batch_success.1.json
new file mode 100644
index 00000000..0da43a00
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_add_tracking_events_batch_success.1.json
@@ -0,0 +1,2374 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "string": "Name"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Origin"
+                },
+                {
+                  "string": "Category"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
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+                          },
+                          "val": {
+                            "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "event_type"
+                          },
+                          "val": {
+                            "symbol": "PROC"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "note"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "product_id"
+                          },
+                          "val": {
+                            "string": "P1"
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_events_batch"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "u64": 2
+                },
+                {
+                  "u64": 3
+                },
+                {
+                  "u64": 4
+                },
+                {
+                  "u64": 5
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "string": "P1"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "u64": 2
+                },
+                {
+                  "u64": 3
+                },
+                {
+                  "u64": 4
+                },
+                {
+                  "u64": 5
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_authorize_add_event_transfer.1.json b/smart-contract/contracts/test_snapshots/test/test_authorize_add_event_transfer.1.json
new file mode 100644
index 00000000..de2763e0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_authorize_add_event_transfer.1.json
@@ -0,0 +1,1873 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
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+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "PROC"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
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+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
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+                "durability": "persistent",
+                "val": {
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+                    }
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+                }
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+            "ext": "v0"
+          },
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+        ]
+      ],
+      [
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+          "contract_data": {
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+            "key": {
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+                {
+                  "symbol": "ProductEventIdsByActor"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    },
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+                },
+                "durability": "persistent",
+                "val": {
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+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
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+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
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+                {
+                  "symbol": "ProductEventIdsByType"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROC"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIdsByType"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "PROC"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": [
+                    {
+                      "u64": 1
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventTimestamps"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventTimestamps"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
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+                  ]
+                }
+              }
+            },
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+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
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+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 1033654523790656264
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 1033654523790656264
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 2032731177588607455
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 2032731177588607455
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 4837995959683129791
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 4837995959683129791
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 4270020994084947596
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 4270020994084947596
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_event_ids"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_authorized_actor_blocked_on_deactivated_product.1.json b/smart-contract/contracts/test_snapshots/test/test_authorized_actor_blocked_on_deactivated_product.1.json
new file mode 100644
index 00000000..d9cab0da
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_authorized_actor_blocked_on_deactivated_product.1.json
@@ -0,0 +1,1473 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Archived"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_deactivated"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Archived"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 21
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_tracking_event"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "SHIP"
+                    },
+                    {
+                      "string": "Port"
+                    },
+                    {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_authorized_actor_can_add_event.1.json b/smart-contract/contracts/test_snapshots/test/test_authorized_actor_can_add_event.1.json
new file mode 100644
index 00000000..017666d0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_authorized_actor_can_add_event.1.json
@@ -0,0 +1,1718 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                },
+                {
+                  "string": "Processing Mill"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Washed and dried"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "PROCESS"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Processing Mill"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Washed and dried"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeCount"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeCount"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "PROCESS"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeIndex"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeIndex"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "PROCESS"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
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+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_authorized_actors_persist_across_transfer.1.json b/smart-contract/contracts/test_snapshots/test/test_authorized_actors_persist_across_transfer.1.json
new file mode 100644
index 00000000..a398f7da
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_authorized_actors_persist_across_transfer.1.json
@@ -0,0 +1,1287 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
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+              "function_name": "transfer_product",
+              "args": [
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+                },
+                {
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+                }
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+        }
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+                },
+                {
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+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
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+          "sub_invocations": []
+        }
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+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
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+                }
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+            "durability": "persistent"
+          }
+        },
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+                      "symbol": "Auth"
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+                    }
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+                "val": {
+                  "bool": true
+                }
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+          4095
+        ]
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+                {
+                  "string": "COFFEE-ETH-001"
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+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                      "symbol": "Auth"
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+                  "bool": true
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+          },
+          4095
+        ]
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+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
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+                        "symbol": "category"
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+                      "val": {
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+                        "symbol": "certifications"
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+                      }
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+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
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+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
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+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
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+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
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+                      }
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+          },
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+        ]
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+      [
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+            "key": {
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+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
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+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                      "symbol": "ProductEventIds"
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+                      "string": "COFFEE-ETH-001"
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+                "val": {
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+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
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+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
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+                        "val": {
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+                        "key": {
+                          "vec": [
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+                              "symbol": "TotalProducts"
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+            "durability": "temporary"
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+        [
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+                "durability": "temporary",
+                "val": "void"
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+            "ext": "v0"
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+          15
+        ]
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+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                "durability": "temporary",
+                "val": "void"
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+                "val": "void"
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+                "symbol": "register_product"
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+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_coffee_supply_chain_scenario.1.json b/smart-contract/contracts/test_snapshots/test/test_coffee_supply_chain_scenario.1.json
new file mode 100644
index 00000000..77023686
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_coffee_supply_chain_scenario.1.json
@@ -0,0 +1,4506 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": "Premium single-origin coffee"
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Hand-picked at peak ripeness"
+                },
+                {
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+                      "key": {
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+                      },
+                      "val": {
+                        "string": "Abebe Bekele"
+                      }
+                    },
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+                        "symbol": "gps"
+                      },
+                      "val": {
+                        "string": "6.5244,38.4356"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
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+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                },
+                {
+                  "string": "Addis Mill"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Fermented for 24 hours"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "grade"
+                      },
+                      "val": {
+                        "string": "Grade 1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "method"
+                      },
+                      "val": {
+                        "string": "Washed"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "QUALITY"
+                },
+                {
+                  "string": "Addis Mill QC Lab"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Cupping notes: floral, citrus, chocolate"
+                },
+                {
+                  "map": [
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+                      "key": {
+                        "symbol": "defects"
+                      },
+                      "val": {
+                        "string": "0"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "score"
+                      },
+                      "val": {
+                        "string": "87.5"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PACKAGE"
+                },
+                {
+                  "string": "Addis Export Facility"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Vacuum sealed in GrainPro bags"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "batch"
+                      },
+                      "val": {
+                        "string": "B2024-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "weight_kg"
+                      },
+                      "val": {
+                        "string": "60"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
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+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port of Djibouti"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Departed for Hamburg"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "carrier"
+                      },
+                      "val": {
+                        "string": "Maersk"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "container"
+                      },
+                      "val": {
+                        "string": "MSKU1234567"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
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+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
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+            "key": {
+              "vec": [
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+                },
+                {
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+                },
+                {
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+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
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+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
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+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
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+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+            "key": {
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+                },
+                {
+                  "u64": 1
+                }
+              ]
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+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
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+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
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+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "farmer_name"
+                            },
+                            "val": {
+                              "string": "Abebe Bekele"
+                            }
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+                          {
+                            "key": {
+                              "symbol": "gps"
+                            },
+                            "val": {
+                              "string": "6.5244,38.4356"
+                            }
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+                    {
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+                      "val": {
+                        "string": "Hand-picked at peak ripeness"
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+                      "val": {
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+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
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+          4095
+        ]
+      ],
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
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+                  "symbol": "Event"
+                },
+                {
+                  "u64": 2
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 2
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
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+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
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+                    {
+                      "key": {
+                        "symbol": "data_hash"
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+                      "val": {
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+                      }
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+                    {
+                      "key": {
+                        "symbol": "event_id"
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+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
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+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Addis Mill"
+                      }
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+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "PROCESS"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Addis Mill"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "grade"
+                                  },
+                                  "val": {
+                                    "string": "Grade 1"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "method"
+                                  },
+                                  "val": {
+                                    "string": "Washed"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Fermented for 24 hours"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "QUALITY"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Addis Mill QC Lab"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "defects"
+                                  },
+                                  "val": {
+                                    "string": "0"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "score"
+                                  },
+                                  "val": {
+                                    "string": "87.5"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Cupping notes: floral, citrus, chocolate"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 4
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "PACKAGE"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Addis Export Facility"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "batch"
+                                  },
+                                  "val": {
+                                    "string": "B2024-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "weight_kg"
+                                  },
+                                  "val": {
+                                    "string": "60"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Vacuum sealed in GrainPro bags"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 5
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port of Djibouti"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "carrier"
+                                  },
+                                  "val": {
+                                    "string": "Maersk"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "container"
+                                  },
+                                  "val": {
+                                    "string": "MSKU1234567"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Departed for Hamburg"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 5
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "farmer_name"
+                                  },
+                                  "val": {
+                                    "string": "Abebe Bekele"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "gps"
+                                  },
+                                  "val": {
+                                    "string": "6.5244,38.4356"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Hand-picked at peak ripeness"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_deactivate_already_inactive_product.1.json b/smart-contract/contracts/test_snapshots/test/test_deactivate_already_inactive_product.1.json
new file mode 100644
index 00000000..0bc666ef
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_deactivate_already_inactive_product.1.json
@@ -0,0 +1,691 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "First deactivation"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "First deactivation"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "0"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_deactivate_nonexistent_product.1.json b/smart-contract/contracts/test_snapshots/test/test_deactivate_nonexistent_product.1.json
new file mode 100644
index 00000000..20c31627
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_deactivate_nonexistent_product.1.json
@@ -0,0 +1,135 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_deactivate_requires_nonempty_reason.1.json b/smart-contract/contracts/test_snapshots/test/test_deactivate_requires_nonempty_reason.1.json
new file mode 100644
index 00000000..ef1631f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_deactivate_requires_nonempty_reason.1.json
@@ -0,0 +1,629 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
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+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
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+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
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+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_deactivated_product_cannot_receive_events.1.json b/smart-contract/contracts/test_snapshots/test/test_deactivated_product_cannot_receive_events.1.json
new file mode 100644
index 00000000..995b4d7e
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_deactivated_product_cannot_receive_events.1.json
@@ -0,0 +1,1193 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Product recalled: batch contamination"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": [
+                          {
+                            "map": [
+                              {
+                                "key": {
+                                  "symbol": "deactivated_at"
+                                },
+                                "val": {
+                                  "u64": 0
+                                }
+                              },
+                              {
+                                "key": {
+                                  "symbol": "deactivated_by"
+                                },
+                                "val": {
+                                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                                }
+                              },
+                              {
+                                "key": {
+                                  "symbol": "reason"
+                                },
+                                "val": {
+                                  "string": "Product recalled: batch contamination"
+                                }
+                              }
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 0
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
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+                },
+                {
+                  "key": {
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+                  "val": {
+                    "vec": []
+                  }
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+                {
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+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Product recalled: batch contamination"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_deactivated"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Product recalled: batch contamination"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "RECALL"
+                },
+                {
+                  "string": "Warehouse"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Attempted post-deactivation event"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 21
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_tracking_event"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "RECALL"
+                    },
+                    {
+                      "string": "Warehouse"
+                    },
+                    {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    },
+                    {
+                      "string": "Attempted post-deactivation event"
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_deactivated_product_remains_readable.1.json b/smart-contract/contracts/test_snapshots/test/test_deactivated_product_remains_readable.1.json
new file mode 100644
index 00000000..a65130fc
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_deactivated_product_remains_readable.1.json
@@ -0,0 +1,2024 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Harvested"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Lifecycle complete"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Harvested"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeCount"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeCount"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeIndex"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeIndex"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": [
+                          {
+                            "map": [
+                              {
+                                "key": {
+                                  "symbol": "deactivated_at"
+                                },
+                                "val": {
+                                  "u64": 0
+                                }
+                              },
+                              {
+                                "key": {
+                                  "symbol": "deactivated_by"
+                                },
+                                "val": {
+                                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                                }
+                              },
+                              {
+                                "key": {
+                                  "symbol": "reason"
+                                },
+                                "val": {
+                                  "string": "Lifecycle complete"
+                                }
+                              }
+                            ]
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": [
+                    {
+                      "u64": 1
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
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+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Harvested"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Harvested"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_deactivation_updates_active_counter.1.json b/smart-contract/contracts/test_snapshots/test/test_deactivation_updates_active_counter.1.json
new file mode 100644
index 00000000..c50ba03b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_deactivation_updates_active_counter.1.json
@@ -0,0 +1,693 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Lifecycle complete"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "Lifecycle complete"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "0"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_duplicate_product_rejected.1.json b/smart-contract/contracts/test_snapshots/test/test_duplicate_product_rejected.1.json
new file mode 100644
index 00000000..ef1631f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_duplicate_product_rejected.1.json
@@ -0,0 +1,629 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_event_count_functions.1.json b/smart-contract/contracts/test_snapshots/test/test_event_count_functions.1.json
new file mode 100644
index 00000000..e5897267
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_event_count_functions.1.json
@@ -0,0 +1,4570 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
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+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 5
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 5
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Farm"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 5
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 6
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 6
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "SHIP"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Port"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 6
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 7
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 7
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "SHIP"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Port"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 7
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 8
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 8
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "SHIP"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Port"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 8
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count"
+              }
+            ],
+            "data": {
+              "u64": 8
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_event_count_by_type"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count_by_type"
+              }
+            ],
+            "data": {
+              "u64": 5
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_event_count_by_type"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count_by_type"
+              }
+            ],
+            "data": {
+              "u64": 3
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_event_count_by_type"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event_count_by_type"
+              }
+            ],
+            "data": {
+              "u64": 0
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_event_pagination.1.json b/smart-contract/contracts/test_snapshots/test/test_event_pagination.1.json
new file mode 100644
index 00000000..e0c624dc
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_event_pagination.1.json
@@ -0,0 +1,6151 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
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+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 10
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "u64": 5
+                },
+                {
+                  "u64": 5
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 6
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 7
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 8
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 9
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 10
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 10
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "u64": 20
+                },
+                {
+                  "u64": 5
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 10
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_event_query_1000_events_recent_page.1.json b/smart-contract/contracts/test_snapshots/test/test_event_query_1000_events_recent_page.1.json
new file mode 100644
index 00000000..bff49790
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_event_query_1000_events_recent_page.1.json
@@ -0,0 +1,246338 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "string": "Name"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Origin"
+                },
+                {
+                  "string": "Category"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
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+                {
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+                  "symbol": "SHIP"
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+          "sub_invocations": []
+        }
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+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
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+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
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+                }
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+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_event_query_indexes_and_pagination.1.json b/smart-contract/contracts/test_snapshots/test/test_event_query_indexes_and_pagination.1.json
new file mode 100644
index 00000000..fd53f8b8
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_event_query_indexes_and_pagination.1.json
@@ -0,0 +1,3787 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "P1"
+                },
+                {
+                  "string": "Name"
+                },
+                {
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+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_event_ids_rcnt_page"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "P1"
+                },
+                {
+                  "u32": 3
+                },
+                {
+                  "u32": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_event_ids_rcnt_page"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "ids"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "u64": 3
+                      },
+                      {
+                        "u64": 2
+                      },
+                      {
+                        "u64": 1
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "next_cursor"
+                  },
+                  "val": {
+                    "u32": 6
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_evt_ids_type_page"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "PROC"
+                },
+                {
+                  "u32": 0
+                },
+                {
+                  "u32": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_evt_ids_type_page"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "ids"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "u64": 1
+                      },
+                      {
+                        "u64": 3
+                      },
+                      {
+                        "u64": 6
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "next_cursor"
+                  },
+                  "val": {
+                    "u32": 3
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_evt_ids_type_page"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "P1"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "u32": 0
+                },
+                {
+                  "u32": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_evt_ids_type_page"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "ids"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "u64": 2
+                      },
+                      {
+                        "u64": 4
+                      },
+                      {
+                        "u64": 5
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "next_cursor"
+                  },
+                  "val": {
+                    "u32": 3
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_evt_ids_actr_page"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "P1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "u32": 0
+                },
+                {
+                  "u32": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_evt_ids_actr_page"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "ids"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "u64": 1
+                      },
+                      {
+                        "u64": 2
+                      },
+                      {
+                        "u64": 4
+                      },
+                      {
+                        "u64": 6
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "next_cursor"
+                  },
+                  "val": {
+                    "u32": 4
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_evt_ids_actr_page"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "P1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "u32": 0
+                },
+                {
+                  "u32": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_evt_ids_actr_page"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "ids"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "u64": 3
+                      },
+                      {
+                        "u64": 5
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "next_cursor"
+                  },
+                  "val": {
+                    "u32": 2
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_evt_ids_date_page"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "P1"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u32": 0
+                },
+                {
+                  "u32": 100
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_evt_ids_date_page"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "ids"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "u64": 1
+                      },
+                      {
+                        "u64": 2
+                      },
+                      {
+                        "u64": 3
+                      },
+                      {
+                        "u64": 4
+                      },
+                      {
+                        "u64": 5
+                      },
+                      {
+                        "u64": 6
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "next_cursor"
+                  },
+                  "val": {
+                    "u32": 6
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_filter_events_by_time_range.1.json b/smart-contract/contracts/test_snapshots/test/test_filter_events_by_time_range.1.json
new file mode 100644
index 00000000..b72a61db
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_filter_events_by_time_range.1.json
@@ -0,0 +1,2630 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
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+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
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+                {
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+        }
+      ]
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+        {
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+              "function_name": "add_tracking_event",
+              "args": [
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
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+                }
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+          "sub_invocations": []
+        }
+      ]
+    ],
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+              "function_name": "add_tracking_event",
+              "args": [
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+                },
+                {
+                  "string": "COFFEE-ETH-001"
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+                {
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+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
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+          "sub_invocations": []
+        }
+      ]
+    ],
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+    "max_entry_ttl": 6312000,
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+            "key": {
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+                  "symbol": "Auth"
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+                {
+                  "string": "COFFEE-ETH-001"
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+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
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+              ]
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
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+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
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+            "key": {
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+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
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+                      },
+                      "val": {
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+                      }
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+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 2
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 2
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
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+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
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+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "SHIP"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Port"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
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+                        "symbol": "timestamp"
+                      },
+                      "val": {
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+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 3
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                      "symbol": "Event"
+                    },
+                    {
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+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 1
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Farm"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 2
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 2
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "SHIP"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Port"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 2
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "RECEIVE"
+                },
+                {
+                  "string": "Warehouse"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 3
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "RECEIVE"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Warehouse"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 3
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_events_by_time_range"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 1000
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_events_by_time_range"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "RECEIVE"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Warehouse"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_filter_events_by_type.1.json b/smart-contract/contracts/test_snapshots/test/test_filter_events_by_type.1.json
new file mode 100644
index 00000000..0ae02e58
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_filter_events_by_type.1.json
@@ -0,0 +1,3741 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
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+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 4
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 5
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 2
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_flexible_filter.1.json b/smart-contract/contracts/test_snapshots/test/test_flexible_filter.1.json
new file mode 100644
index 00000000..5919d8b6
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_flexible_filter.1.json
@@ -0,0 +1,2584 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": "Premium single-origin coffee"
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm B"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                },
+                {
+                  "string": "Mill"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm A"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 2
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 2
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 2
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm B"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 3
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 3
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 3
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "PROCESS"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
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+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 1
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Farm A"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm B"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 2
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 2
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Farm B"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 2
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "PROCESS"
+                },
+                {
+                  "string": "Mill"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 3
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "PROCESS"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Mill"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 3
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "end_time"
+                      },
+                      "val": {
+                        "u64": 18446744073709551615
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm A"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "start_time"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "end_time"
+                      },
+                      "val": {
+                        "u64": 18446744073709551615
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "start_time"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm B"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 2
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_flexible_filter_by_location.1.json b/smart-contract/contracts/test_snapshots/test/test_flexible_filter_by_location.1.json
new file mode 100644
index 00000000..37f60cde
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_flexible_filter_by_location.1.json
@@ -0,0 +1,2731 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
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+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 3
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "end_time"
+                      },
+                      "val": {
+                        "u64": 18446744073709551615
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm A"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "start_time"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "end_time"
+                      },
+                      "val": {
+                        "u64": 18446744073709551615
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "start_time"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_filtered_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm B"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": ""
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 2
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_full_coffee_supply_chain_lifecycle.1.json b/smart-contract/contracts/test_snapshots/test/test_full_coffee_supply_chain_lifecycle.1.json
new file mode 100644
index 00000000..14348784
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_full_coffee_supply_chain_lifecycle.1.json
@@ -0,0 +1,3523 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
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+              "args": [
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+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
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+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
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+                },
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+        }
+      ]
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
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+                },
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+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Hand-picked at peak"
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+                    {
+                      "key": {
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+                      "val": {
+                        "string": "6.5244,38.4356"
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+                  ]
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+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+                },
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+                  "string": "COFFEE-ETH-001"
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+                  "string": "Addis Mill"
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+                },
+                {
+                  "string": "Fermented 24h"
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+                      },
+                      "val": {
+                        "string": "Washed"
+                      }
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+                  ]
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+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+                },
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+                  "string": "COFFEE-ETH-001"
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+                  "symbol": "SHIP"
+                },
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+                },
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+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Departed for Hamburg"
+                },
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+                  "map": [
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+                        "symbol": "carrier"
+                      },
+                      "val": {
+                        "string": "Maersk"
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+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
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+            "contract_fn": {
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+              "function_name": "deactivate_product",
+              "args": [
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
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+                  "string": "Coffee delivered to roaster in Hamburg"
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+          "sub_invocations": []
+        }
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
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+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
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+            "ext": "v0"
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+          4095
+        ]
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+      [
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+          "contract_data": {
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+            "key": {
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+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "key": {
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+                  ]
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+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
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+            "ext": "v0"
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+        ]
+      ],
+      [
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+              ]
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "key": {
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+      [
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+            "durability": "persistent"
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+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 2
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port of Djibouti"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Departed for Hamburg"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "carrier"
+                      },
+                      "val": {
+                        "string": "Maersk"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              },
+              {
+                "u64": 3
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "SHIP"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Port of Djibouti"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "carrier"
+                        },
+                        "val": {
+                          "string": "Maersk"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Departed for Hamburg"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 3
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Coffee delivered to roaster in Hamburg"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_deactivated"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Coffee delivered to roaster in Hamburg"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "deactivated_at"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "deactivated_by"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "reason"
+                            },
+                            "val": {
+                              "string": "Coffee delivered to roaster in Hamburg"
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "gps"
+                                  },
+                                  "val": {
+                                    "string": "6.5244,38.4356"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Hand-picked at peak"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "PROCESS"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Addis Mill"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "method"
+                                  },
+                                  "val": {
+                                    "string": "Washed"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Fermented 24h"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port of Djibouti"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "carrier"
+                                  },
+                                  "val": {
+                                    "string": "Maersk"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Departed for Hamburg"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_stats"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_stats"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active_products"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_products"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_inactive_product_cannot_add_event.1.json b/smart-contract/contracts/test_snapshots/test/test_inactive_product_cannot_add_event.1.json
new file mode 100644
index 00000000..7b048ca2
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_inactive_product_cannot_add_event.1.json
@@ -0,0 +1,987 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": "Premium single-origin coffee"
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "set_product_active",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "bool": false
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
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+                "val": {
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+                }
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+          4095
+        ]
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+          "contract_data": {
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+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                "durability": "persistent",
+                "val": {
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+                        "bool": false
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+                        "string": "COFFEE-ETH-001"
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+                        "symbol": "name"
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+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
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+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
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+                      }
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+            },
+            "ext": "v0"
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+          4095
+        ]
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+      [
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+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
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+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
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+            "durability": "persistent"
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+                }
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+          4095
+        ]
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+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
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+            "ext": "v0"
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+        ]
+      ],
+      [
+        {
+          "contract_data": {
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+            "key": {
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+                "nonce": 801925984706572462
+              }
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+            "durability": "temporary"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
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+                "durability": "temporary",
+                "val": "void"
+              }
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+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
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+            "key": {
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+              }
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+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
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+  "events": [
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+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": "Premium single-origin coffee"
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
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+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
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+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "set_product_active"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "bool": false
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "set_product_active"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 4
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 4
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 4
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_tracking_event"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    },
+                    {
+                      "string": "Farm"
+                    },
+                    {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_multiple_products_stats_tracking.1.json b/smart-contract/contracts/test_snapshots/test/test_multiple_products_stats_tracking.1.json
new file mode 100644
index 00000000..55cb9068
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_multiple_products_stats_tracking.1.json
@@ -0,0 +1,1481 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD-A"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD-B"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Product"
+                      }
+                    },
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+                    "string": "PROD-C"
+                  },
+                  {
+                    "string": "PROD-B"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD-C"
+                  },
+                  {
+                    "string": "PROD-B"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "3"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4270020994084947596"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_add_actor.1.json b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_add_actor.1.json
new file mode 100644
index 00000000..7cf3a08f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_add_actor.1.json
@@ -0,0 +1,680 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "AllProductsIndex"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "AllProductsIndex"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OriginProductCount"
+                },
+                {
+                  "string": "Nigeria"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OriginProductCount"
+                    },
+                    {
+                      "string": "Nigeria"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OriginProductIndex"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OriginProductIndex"
+                    },
+                    {
+                      "string": "Nigeria"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OwnerProductCount"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OwnerProductCount"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OwnerProductIndex"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OwnerProductIndex"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "string": "Metadata"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "string": "Nigeria"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 3
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_add_authorized_actor.1.json b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_add_authorized_actor.1.json
new file mode 100644
index 00000000..48cc36ee
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_add_authorized_actor.1.json
@@ -0,0 +1,995 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 3
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_deactivate.1.json b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_deactivate.1.json
new file mode 100644
index 00000000..817aa8d6
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_deactivate.1.json
@@ -0,0 +1,629 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_reactivate.1.json b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_reactivate.1.json
new file mode 100644
index 00000000..64e7e81d
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_non_owner_cannot_reactivate.1.json
@@ -0,0 +1,691 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Suspended"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "Suspended"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "0"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_old_owner_cannot_add_actors_after_transfer.1.json b/smart-contract/contracts/test_snapshots/test/test_old_owner_cannot_add_actors_after_transfer.1.json
new file mode 100644
index 00000000..f09a793b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_old_owner_cannot_add_actors_after_transfer.1.json
@@ -0,0 +1,1196 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
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+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
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+                },
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+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
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+                }
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+        }
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+            "durability": "persistent"
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+        },
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+                "durability": "persistent",
+                "val": {
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+            "ext": "v0"
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+      ],
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+                  "symbol": "Product"
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+            "durability": "persistent"
+          }
+        },
+        [
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                      "val": {
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+                      "val": {
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+                    },
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+                        "symbol": "custom"
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+                      "val": {
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+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
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+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
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+                      }
+                    }
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+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
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+                "durability": "persistent",
+                "val": {
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+            "ext": "v0"
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+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
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+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
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+            "durability": "temporary"
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+        },
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+                "durability": "temporary",
+                "val": "void"
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+          },
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+      ],
+      [
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+          "contract_data": {
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+                "durability": "temporary",
+                "val": "void"
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+      ],
+      [
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+            "durability": "temporary"
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+        },
+        [
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+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
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+                },
+                "durability": "temporary",
+                "val": "void"
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+            "ext": "v0"
+          },
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+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
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+        [
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+            "data": {
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+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
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+  "events": [
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+        "type_": "diagnostic",
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+              {
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+            "data": {
+              "vec": [
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
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+                      "val": {
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+                      "val": {
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+        "type_": "contract",
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+            "data": {
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+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_transferred"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 3
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_owner_can_deactivate_product.1.json b/smart-contract/contracts/test_snapshots/test/test_owner_can_deactivate_product.1.json
new file mode 100644
index 00000000..ac385f54
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_owner_can_deactivate_product.1.json
@@ -0,0 +1,691 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Reached final destination"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "deactivated_at"
+                              },
+                              "val": {
+                                "u64": "0"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "deactivated_by"
+                              },
+                              "val": {
+                                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "reason"
+                              },
+                              "val": {
+                                "string": "Reached final destination"
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "0"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_owner_can_reactivate_product.1.json b/smart-contract/contracts/test_snapshots/test/test_owner_can_reactivate_product.1.json
new file mode 100644
index 00000000..0b599715
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_owner_can_reactivate_product.1.json
@@ -0,0 +1,717 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Temporary suspension"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "reactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_owner_cannot_remove_self.1.json b/smart-contract/contracts/test_snapshots/test/test_owner_cannot_remove_self.1.json
new file mode 100644
index 00000000..2d887827
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_owner_cannot_remove_self.1.json
@@ -0,0 +1,440 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "create_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Test Product"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "authorized_actors"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ProductCounter"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "create_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Test Product"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product"
+              },
+              {
+                "symbol": "created"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "create_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "remove_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "remove_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 8
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 8
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 8
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "remove_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_ownership_preserves_authorized_actors.1.json b/smart-contract/contracts/test_snapshots/test/test_ownership_preserves_authorized_actors.1.json
new file mode 100644
index 00000000..36b606b5
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_ownership_preserves_authorized_actors.1.json
@@ -0,0 +1,993 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "AllProductsIndex"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "AllProductsIndex"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OriginProductCount"
+                },
+                {
+                  "string": "Nigeria"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "OriginProductCount"
+                    },
+                    {
+                      "string": "Nigeria"
+                    }
+                  ]
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+                "durability": "persistent",
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+            "ext": "v0"
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+          4095
+        ]
+      ],
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+                {
+                  "string": "Nigeria"
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+                {
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+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                      "symbol": "OriginProductIndex"
+                    },
+                    {
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+                "val": {
+                  "u64": 1
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+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OwnerProductCount"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OwnerProductCount"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
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+          "contract_data": {
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+            "key": {
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+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
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+            "last_modified_ledger_seq": 0,
+            "data": {
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+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
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+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "string": "Metadata"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "string": "Nigeria"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 1033654523790656264
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 1033654523790656264
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 4837995959683129791
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 4837995959683129791
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_pharma_cold_chain_scenario.1.json b/smart-contract/contracts/test_snapshots/test/test_pharma_cold_chain_scenario.1.json
new file mode 100644
index 00000000..ccc80f04
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_pharma_cold_chain_scenario.1.json
@@ -0,0 +1,4704 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "string": "COVID-19 Vaccine Batch A"
+                },
+                {
+                  "string": "mRNA vaccine requiring cold chain"
+                },
+                {
+                  "string": "Pfizer Manufacturing, Belgium"
+                },
+                {
+                  "string": "Pharmaceutical"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "symbol": "MANUFACTURE"
+                },
+                {
+                  "string": "Puurs, Belgium"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Quality controlled batch"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
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+                      },
+                      "val": {
+                        "string": "LOT-2024-A-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "doses"
+                      },
+                      "val": {
+                        "string": "10000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "formula"
+                      },
+                      "val": {
+                        "string": "BNT162b2"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
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+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
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+                  "symbol": "TEMP_CHECK"
+                },
+                {
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+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Automated temperature log"
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+                      "key": {
+                        "symbol": "recorded_at"
+                      },
+                      "val": {
+                        "string": "1000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "sensor_id"
+                      },
+                      "val": {
+                        "string": "TEMP-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "temperature_c"
+                      },
+                      "val": {
+                        "string": "-75.0"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                },
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+                {
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+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
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+                      "key": {
+                        "symbol": "recorded_at"
+                      },
+                      "val": {
+                        "string": "2000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "sensor_id"
+                      },
+                      "val": {
+                        "string": "TEMP-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "temperature_c"
+                      },
+                      "val": {
+                        "string": "-74.5"
+                      }
+                    }
+                  ]
+                }
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+          "sub_invocations": []
+        }
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+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
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+              "function_name": "add_tracking_event",
+              "args": [
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+                },
+                {
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+                },
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+                },
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+                      "key": {
+                        "symbol": "recorded_at"
+                      },
+                      "val": {
+                        "string": "3000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "sensor_id"
+                      },
+                      "val": {
+                        "string": "TEMP-001"
+                      }
+                    },
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+                      "key": {
+                        "symbol": "temperature_c"
+                      },
+                      "val": {
+                        "string": "-75.2"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
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+          "function": {
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+              "function_name": "add_tracking_event",
+              "args": [
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+                },
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+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "symbol": "TEMP_CHECK"
+                },
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+                },
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+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Automated temperature log"
+                },
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+                        "symbol": "recorded_at"
+                      },
+                      "val": {
+                        "string": "4000"
+                      }
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+                    {
+                      "key": {
+                        "symbol": "sensor_id"
+                      },
+                      "val": {
+                        "string": "TEMP-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "temperature_c"
+                      },
+                      "val": {
+                        "string": "-74.8"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
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+    "sequence_number": 0,
+    "timestamp": 0,
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+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
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+            "key": {
+              "vec": [
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+                  "symbol": "Auth"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "VACCINE-2024-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
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+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
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+                      }
+                    },
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+                      },
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+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "MANUFACTURE"
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+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Puurs, Belgium"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "batch"
+                            },
+                            "val": {
+                              "string": "LOT-2024-A-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "doses"
+                            },
+                            "val": {
+                              "string": "10000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "formula"
+                            },
+                            "val": {
+                              "string": "BNT162b2"
+                            }
+                          }
+                        ]
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+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Quality controlled batch"
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+            "key": {
+              "vec": [
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+                  "symbol": "Event"
+                },
+                {
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+                }
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                      "symbol": "Event"
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+                    {
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+                "durability": "persistent",
+                "val": {
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+                      "key": {
+                        "symbol": "actor"
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+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
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+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 4
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "recorded_at"
+                                  },
+                                  "val": {
+                                    "string": "3000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "sensor_id"
+                                  },
+                                  "val": {
+                                    "string": "TEMP-001"
+                                  }
+                                },
+                                {
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+                                    "symbol": "temperature_c"
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+                                    "string": "-75.2"
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+                            "val": {
+                              "string": "Automated temperature log"
+                            }
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+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
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+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 5
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "recorded_at"
+                                  },
+                                  "val": {
+                                    "string": "4000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "sensor_id"
+                                  },
+                                  "val": {
+                                    "string": "TEMP-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-74.8"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Automated temperature log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 4
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_events_by_time_range"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 1000
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_events_by_time_range"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "MANUFACTURE"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Puurs, Belgium"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "batch"
+                                  },
+                                  "val": {
+                                    "string": "LOT-2024-A-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "doses"
+                                  },
+                                  "val": {
+                                    "string": "10000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "formula"
+                                  },
+                                  "val": {
+                                    "string": "BNT162b2"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Quality controlled batch"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "recorded_at"
+                                  },
+                                  "val": {
+                                    "string": "1000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "sensor_id"
+                                  },
+                                  "val": {
+                                    "string": "TEMP-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-75.0"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Automated temperature log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "recorded_at"
+                                  },
+                                  "val": {
+                                    "string": "2000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "sensor_id"
+                                  },
+                                  "val": {
+                                    "string": "TEMP-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-74.5"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Automated temperature log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 4
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "recorded_at"
+                                  },
+                                  "val": {
+                                    "string": "3000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "sensor_id"
+                                  },
+                                  "val": {
+                                    "string": "TEMP-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-75.2"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Automated temperature log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 5
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "recorded_at"
+                                  },
+                                  "val": {
+                                    "string": "4000"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "sensor_id"
+                                  },
+                                  "val": {
+                                    "string": "TEMP-001"
+                                  }
+                                },
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-74.8"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Automated temperature log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 5
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_pharma_cold_chain_with_recall.1.json b/smart-contract/contracts/test_snapshots/test/test_pharma_cold_chain_with_recall.1.json
new file mode 100644
index 00000000..90fc1086
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_pharma_cold_chain_with_recall.1.json
@@ -0,0 +1,3888 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Pharmaceutical"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "mRNA vaccine requiring cold chain"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "VACCINE-2024-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "COVID-19 Vaccine Batch A"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Pfizer Manufacturing, Belgium"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "symbol": "TEMP_CHECK"
+                },
+                {
+                  "string": "Cold Storage A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
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+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_events_by_type"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-75.0"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Auto log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-74.5"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Auto log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-75.2"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Auto log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 4
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "TEMP_CHECK"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Cold Storage A"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": [
+                                {
+                                  "key": {
+                                    "symbol": "temperature_c"
+                                  },
+                                  "val": {
+                                    "string": "-74.8"
+                                  }
+                                }
+                              ]
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Auto log"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "VACCINE-2024-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 4
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "VACCINE-2024-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 21
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_tracking_event"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "VACCINE-2024-001"
+                    },
+                    {
+                      "symbol": "SHIP"
+                    },
+                    {
+                      "string": "Port"
+                    },
+                    {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_product_reaches_final_destination.1.json b/smart-contract/contracts/test_snapshots/test/test_product_reaches_final_destination.1.json
new file mode 100644
index 00000000..e621e546
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_product_reaches_final_destination.1.json
@@ -0,0 +1,3157 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Picked at peak"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Shipped to Hamburg"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "RECEIVE"
+                },
+                {
+                  "string": "Hamburg Warehouse"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Received in good condition"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Product delivered to final destination"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Product delivered to final destination"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_deactivated"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Product delivered to final destination"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "deactivated_at"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "deactivated_by"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "reason"
+                            },
+                            "val": {
+                              "string": "Product delivered to final destination"
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "u64": 0
+                },
+                {
+                  "u64": 10
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product_events"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "events"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 1
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "HARVEST"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Farm"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Picked at peak"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 2
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "SHIP"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Port"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Shipped to Hamburg"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      },
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "actor"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "data_hash"
+                            },
+                            "val": {
+                              "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_id"
+                            },
+                            "val": {
+                              "u64": 3
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "event_type"
+                            },
+                            "val": {
+                              "symbol": "RECEIVE"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Hamburg Warehouse"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "metadata"
+                            },
+                            "val": {
+                              "map": []
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "note"
+                            },
+                            "val": {
+                              "string": "Received in good condition"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "product_id"
+                            },
+                            "val": {
+                              "string": "COFFEE-ETH-001"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "timestamp"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "has_more"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "total_count"
+                  },
+                  "val": {
+                    "u64": 3
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_product_recalled_scenario.1.json b/smart-contract/contracts/test_snapshots/test/test_product_recalled_scenario.1.json
new file mode 100644
index 00000000..868dc5a7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_product_recalled_scenario.1.json
@@ -0,0 +1,1931 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "MANUFACTURE"
+                },
+                {
+                  "string": "Factory"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Batch produced"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "batch"
+                      },
+                      "val": {
+                        "string": "LOT-A-2024"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "RECALL: contamination detected in batch LOT-A-2024"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "MANUFACTURE"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Factory"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "batch"
+                            },
+                            "val": {
+                              "string": "LOT-A-2024"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Batch produced"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeCount"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "MANUFACTURE"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeCount"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "MANUFACTURE"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "RECALL: contamination detected in batch LOT-A-2024"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_deactivated"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "RECALL: contamination detected in batch LOT-A-2024"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "deactivate_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": false
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": [
+                      {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "deactivated_at"
+                            },
+                            "val": {
+                              "u64": 0
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "deactivated_by"
+                            },
+                            "val": {
+                              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                            }
+                          },
+                          {
+                            "key": {
+                              "symbol": "reason"
+                            },
+                            "val": {
+                              "string": "RECALL: contamination detected in batch LOT-A-2024"
+                            }
+                          }
+                        ]
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "SHIP"
+                },
+                {
+                  "string": "Port"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 21
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 21
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_tracking_event"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "SHIP"
+                    },
+                    {
+                      "string": "Port"
+                    },
+                    {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_product_storage.1.json b/smart-contract/contracts/test_snapshots/test/test_product_storage.1.json
new file mode 100644
index 00000000..7fc04a5c
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_product_storage.1.json
@@ -0,0 +1,1540 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                },
+                {
+                  "string": "Test Product"
+                },
+                {
+                  "string": "Test description"
+                },
+                {
+                  "string": "Test Origin"
+                },
+                {
+                  "string": "Test Category"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "TEST-PRODUCT-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "TEST-PRODUCT-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Test Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Test description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "TEST-PRODUCT-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Test Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "TEST-PRODUCT-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventTimestamps"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventTimestamps"
+                    },
+                    {
+                      "string": "TEST-PRODUCT-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                },
+                {
+                  "string": "Test Product"
+                },
+                {
+                  "string": "Test description"
+                },
+                {
+                  "string": "Test Origin"
+                },
+                {
+                  "string": "Test Category"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "TEST-PRODUCT-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Test Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Test description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "TEST-PRODUCT-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Test Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Test Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Test description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "TEST-PRODUCT-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Test Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "TEST-PRODUCT-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Test Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Test description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "TEST-PRODUCT-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Test Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "TEST-PRODUCT-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Test Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Test description"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "TEST-PRODUCT-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Test Product"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Test Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "TEST-PRODUCT-001"
+                },
+                {
+                  "string": "Duplicate Product"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Another Origin"
+                },
+                {
+                  "string": "Another Category"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 1
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 1
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 1
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "TEST-PRODUCT-001"
+                    },
+                    {
+                      "string": "Duplicate Product"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Another Origin"
+                    },
+                    {
+                      "string": "Another Category"
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "NON-EXISTENT-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "NON-EXISTENT-001"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_reactivate_already_active_product.1.json b/smart-contract/contracts/test_snapshots/test/test_reactivate_already_active_product.1.json
new file mode 100644
index 00000000..ef1631f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_reactivate_already_active_product.1.json
@@ -0,0 +1,629 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_reactivated_product_can_receive_events.1.json b/smart-contract/contracts/test_snapshots/test/test_reactivated_product_can_receive_events.1.json
new file mode 100644
index 00000000..e9bc94cc
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_reactivated_product_can_receive_events.1.json
@@ -0,0 +1,1772 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Suspended"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "reactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "RESUME"
+                },
+                {
+                  "string": "Warehouse"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Shipment resumed"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "RESUME"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Warehouse"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Shipment resumed"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeCount"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "RESUME"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeCount"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "RESUME"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeIndex"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "RESUME"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeIndex"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "RESUME"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
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+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Warehouse"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Shipment resumed"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "RESUME"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Warehouse"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Shipment resumed"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_reactivation_updates_active_counter.1.json b/smart-contract/contracts/test_snapshots/test/test_reactivation_updates_active_counter.1.json
new file mode 100644
index 00000000..c541d06b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_reactivation_updates_active_counter.1.json
@@ -0,0 +1,717 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Suspended"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "reactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_and_get_product.1.json b/smart-contract/contracts/test_snapshots/test/test_register_and_get_product.1.json
new file mode 100644
index 00000000..ef1631f7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_and_get_product.1.json
@@ -0,0 +1,629 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_increments_stats.1.json b/smart-contract/contracts/test_snapshots/test/test_register_increments_stats.1.json
new file mode 100644
index 00000000..005f29b8
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_increments_stats.1.json
@@ -0,0 +1,630 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_products_batch_atomic_failure.1.json b/smart-contract/contracts/test_snapshots/test/test_register_products_batch_atomic_failure.1.json
new file mode 100644
index 00000000..4ab578c6
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_products_batch_atomic_failure.1.json
@@ -0,0 +1,800 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_products_batch"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "vec": [
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "OK"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_products_batch"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 6
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 6
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 6
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_products_batch"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "vec": [
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "category"
+                              },
+                              "val": {
+                                "string": "Category"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "certifications"
+                              },
+                              "val": {
+                                "vec": []
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "custom"
+                              },
+                              "val": {
+                                "map": []
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "description"
+                              },
+                              "val": {
+                                "string": ""
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "id"
+                              },
+                              "val": {
+                                "string": "OK"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "media_hashes"
+                              },
+                              "val": {
+                                "vec": []
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "name"
+                              },
+                              "val": {
+                                "string": "Name"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "origin_location"
+                              },
+                              "val": {
+                                "string": "Origin"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "tags"
+                              },
+                              "val": {
+                                "vec": []
+                              }
+                            }
+                          ]
+                        },
+                        {
+                          "map": [
+                            {
+                              "key": {
+                                "symbol": "category"
+                              },
+                              "val": {
+                                "string": "Category"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "certifications"
+                              },
+                              "val": {
+                                "vec": []
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "custom"
+                              },
+                              "val": {
+                                "map": []
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "description"
+                              },
+                              "val": {
+                                "string": ""
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "id"
+                              },
+                              "val": {
+                                "string": ""
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "media_hashes"
+                              },
+                              "val": {
+                                "vec": []
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "name"
+                              },
+                              "val": {
+                                "string": "Name"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "origin_location"
+                              },
+                              "val": {
+                                "string": "Origin"
+                              }
+                            },
+                            {
+                              "key": {
+                                "symbol": "tags"
+                              },
+                              "val": {
+                                "vec": []
+                              }
+                            }
+                          ]
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "OK"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 2
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 2
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "get_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "OK"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_products_batch_success.1.json b/smart-contract/contracts/test_snapshots/test/test_register_products_batch_success.1.json
new file mode 100644
index 00000000..991a77de
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_products_batch_success.1.json
@@ -0,0 +1,7342 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_products_batch",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "vec": [
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-0"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-1"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-2"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-3"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-4"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-5"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-6"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-7"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-8"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "category"
+                          },
+                          "val": {
+                            "string": "Category"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "certifications"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "custom"
+                          },
+                          "val": {
+                            "map": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "description"
+                          },
+                          "val": {
+                            "string": ""
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "id"
+                          },
+                          "val": {
+                            "string": "P-9"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "media_hashes"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "name"
+                          },
+                          "val": {
+                            "string": "Name"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "origin_location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "tags"
+                          },
+                          "val": {
+                            "vec": []
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "P-0"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "P-0"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "P-1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "P-1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "P-2"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "P-2"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "P-3"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
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+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "P-4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Name"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "P-5"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Name"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "P-6"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Name"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "P-7"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Name"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "P-8"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Name"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "P-9"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Name"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "P-0"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Category"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "P-0"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Name"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Origin"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_custom_field_value_too_long.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_custom_field_value_too_long.1.json
new file mode 100644
index 00000000..d4123b10
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_custom_field_value_too_long.1.json
@@ -0,0 +1,444 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "k"
+                      },
+                      "val": {
+                        "string": "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 20
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 20
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 20
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": "Organic Coffee Beans"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": "Coffee"
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "k"
+                          },
+                          "val": {
+                            "string": "vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv"
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_category.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_category.1.json
new file mode 100644
index 00000000..524bb47e
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_category.1.json
@@ -0,0 +1,426 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 9
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 9
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 9
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": "Organic Coffee Beans"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_id.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_id.1.json
new file mode 100644
index 00000000..20c31627
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_id.1.json
@@ -0,0 +1,135 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_name.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_name.1.json
new file mode 100644
index 00000000..6f7685b9
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_name.1.json
@@ -0,0 +1,426 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 7
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 7
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 7
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": "Coffee"
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_origin.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_origin.1.json
new file mode 100644
index 00000000..20c31627
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_empty_origin.1.json
@@ -0,0 +1,135 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_tag_too_long.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_tag_too_long.1.json
new file mode 100644
index 00000000..2ded47af
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_tag_too_long.1.json
@@ -0,0 +1,434 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt"
+                    }
+                  ]
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 16
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 16
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 16
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": "Organic Coffee Beans"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": "Coffee"
+                    },
+                    {
+                      "vec": [
+                        {
+                          "string": "tttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttt"
+                        }
+                      ]
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_long_description.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_long_description.1.json
new file mode 100644
index 00000000..1bef5742
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_long_description.1.json
@@ -0,0 +1,426 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
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+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 14
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 14
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 14
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": "Organic Coffee Beans"
+                    },
+                    {
+                      "string": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": "Coffee"
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_many_custom_fields.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_many_custom_fields.1.json
new file mode 100644
index 00000000..1e110305
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_many_custom_fields.1.json
@@ -0,0 +1,764 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
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+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
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+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
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+              }
+            },
+            "ext": "v0"
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+          4095
+        ]
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+                }
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+            "durability": "persistent"
+          }
+        },
+        [
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+            "data": {
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+                "val": {
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+            "durability": "persistent"
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
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+                "durability": "persistent",
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+            "durability": "temporary"
+          }
+        },
+        [
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+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
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+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "k0"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k1"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k10"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k11"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k12"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k13"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k14"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k15"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k16"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k17"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k18"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k19"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k2"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k20"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k3"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k4"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k5"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k6"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k7"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k8"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "k9"
+                      },
+                      "val": {
+                        "string": "v"
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 19
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 19
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 19
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": "Organic Coffee Beans"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": "Coffee"
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "k0"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k1"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k10"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k11"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k12"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k13"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k14"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k15"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k16"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k17"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k18"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k19"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k2"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k20"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k3"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k4"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k5"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k6"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k7"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k8"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "k9"
+                          },
+                          "val": {
+                            "string": "v"
+                          }
+                        }
+                      ]
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_many_tags.1.json b/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_many_tags.1.json
new file mode 100644
index 00000000..161ae845
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_register_rejects_too_many_tags.1.json
@@ -0,0 +1,554 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": [
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    },
+                    {
+                      "string": "t"
+                    }
+                  ]
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 15
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 15
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 15
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "register_product"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "string": "Organic Coffee Beans"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "string": "Yirgacheffe, Ethiopia"
+                    },
+                    {
+                      "string": "Coffee"
+                    },
+                    {
+                      "vec": [
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        },
+                        {
+                          "string": "t"
+                        }
+                      ]
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "vec": []
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_remove_authorized_actor.1.json b/smart-contract/contracts/test_snapshots/test/test_remove_authorized_actor.1.json
new file mode 100644
index 00000000..3986c556
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_remove_authorized_actor.1.json
@@ -0,0 +1,1207 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "remove_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 1033654523790656264
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 1033654523790656264
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "remove_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "remove_authorized_actor"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": false
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_remove_nonexistent_actor_fails.1.json b/smart-contract/contracts/test_snapshots/test/test_remove_nonexistent_actor_fails.1.json
new file mode 100644
index 00000000..605a6efe
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_remove_nonexistent_actor_fails.1.json
@@ -0,0 +1,440 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "create_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Test Product"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "authorized_actors"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ProductCounter"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "create_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Test Product"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product"
+              },
+              {
+                "symbol": "created"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "create_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "remove_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "remove_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 9
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 9
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 9
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "remove_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_search_products_by_category.1.json b/smart-contract/contracts/test_snapshots/test/test_search_products_by_category.1.json
new file mode 100644
index 00000000..ef873113
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_search_products_by_category.1.json
@@ -0,0 +1,1084 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Tea"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium green tea from China"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "TEA-CHN-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Green Tea Leaves"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Hangzhou, China"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Tea"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium green tea from China"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "TEA-CHN-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Green Tea Leaves"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Hangzhou, China"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Green Tea Leaves"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Hangzhou, China"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Tea"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_search_products_by_name.1.json b/smart-contract/contracts/test_snapshots/test/test_search_products_by_name.1.json
new file mode 100644
index 00000000..22660064
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_search_products_by_name.1.json
@@ -0,0 +1,1085 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Tea"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium green tea from China"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "TEA-CHN-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Green Tea Leaves"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Hangzhou, China"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Tea"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium green tea from China"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "TEA-CHN-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Green Tea Leaves"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Hangzhou, China"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Green Tea Leaves"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Hangzhou, China"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Tea"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_search_products_by_origin.1.json b/smart-contract/contracts/test_snapshots/test/test_search_products_by_origin.1.json
new file mode 100644
index 00000000..ef873113
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_search_products_by_origin.1.json
@@ -0,0 +1,1084 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Tea"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium green tea from China"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "TEA-CHN-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Green Tea Leaves"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Hangzhou, China"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Tea"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium green tea from China"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "TEA-CHN-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Green Tea Leaves"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Hangzhou, China"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Green Tea Leaves"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Hangzhou, China"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Tea"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "TEA-CHN-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "2"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_search_products_deactivated.1.json b/smart-contract/contracts/test_snapshots/test/test_search_products_deactivated.1.json
new file mode 100644
index 00000000..84a83da3
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_search_products_deactivated.1.json
@@ -0,0 +1,718 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Test deactivation"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "reactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_search_products_no_results.1.json b/smart-contract/contracts/test_snapshots/test/test_search_products_no_results.1.json
new file mode 100644
index 00000000..ab70b827
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_search_products_no_results.1.json
@@ -0,0 +1,630 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium single-origin coffee from Ethiopia"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Organic Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Yirgacheffe, Ethiopia"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Organic Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-ETH-001"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_search_products_with_limit.1.json b/smart-contract/contracts/test_snapshots/test/test_search_products_with_limit.1.json
new file mode 100644
index 00000000..4d59370e
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_search_products_with_limit.1.json
@@ -0,0 +1,2026 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [
+      [
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+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-002"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Various"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-003"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-003"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Various"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-004"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-004"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Various"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "COFFEE-005"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Premium coffee"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "COFFEE-005"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Coffee Beans"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Various"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-001"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-002"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-003"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-004"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "COFFEE-005"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-001"
+                  },
+                  {
+                    "string": "COFFEE-002"
+                  },
+                  {
+                    "string": "COFFEE-003"
+                  },
+                  {
+                    "string": "COFFEE-004"
+                  },
+                  {
+                    "string": "COFFEE-005"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Coffee Beans"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-001"
+                  },
+                  {
+                    "string": "COFFEE-002"
+                  },
+                  {
+                    "string": "COFFEE-003"
+                  },
+                  {
+                    "string": "COFFEE-004"
+                  },
+                  {
+                    "string": "COFFEE-005"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Various"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "COFFEE-001"
+                  },
+                  {
+                    "string": "COFFEE-002"
+                  },
+                  {
+                    "string": "COFFEE-003"
+                  },
+                  {
+                    "string": "COFFEE-004"
+                  },
+                  {
+                    "string": "COFFEE-005"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "5"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "5"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_transfer_ownership.1.json b/smart-contract/contracts/test_snapshots/test/test_transfer_ownership.1.json
new file mode 100644
index 00000000..e706fd19
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_transfer_ownership.1.json
@@ -0,0 +1,1058 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ],
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "transfer_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "AllProductsIndex"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "AllProductsIndex"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OriginProductCount"
+                },
+                {
+                  "string": "Nigeria"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OriginProductCount"
+                    },
+                    {
+                      "string": "Nigeria"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OriginProductIndex"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
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+                    {
+                      "symbol": "OriginProductIndex"
+                    },
+                    {
+                      "string": "Nigeria"
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+                    }
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+                "durability": "persistent",
+                "val": {
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+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OwnerProductCount"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OwnerProductCount"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "OwnerProductIndex"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "OwnerProductIndex"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "string": "Metadata"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "string": "Nigeria"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 1033654523790656264
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 1033654523790656264
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "string": "Nigeria"
+                },
+                {
+                  "string": "Metadata"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "string": "Metadata"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "string": "Nigeria"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": false
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "u64": 1
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 3
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    },
+                    {
+                      "u64": 1
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_transfer_product.1.json b/smart-contract/contracts/test_snapshots/test/test_transfer_product.1.json
new file mode 100644
index 00000000..ace0c18c
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_transfer_product.1.json
@@ -0,0 +1,1043 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
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+                {
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+        },
+        [
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+            "durability": "temporary"
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+                "val": "void"
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+        ]
+      ],
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+              }
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+        },
+        [
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+                  }
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+                "durability": "temporary",
+                "val": "void"
+              }
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+      [
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+          }
+        },
+        [
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+        "type_": "diagnostic",
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+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
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+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
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+                  "key": {
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+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
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+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
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+                  "val": {
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+                },
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+                  "val": {
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+                },
+                {
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+                  "val": {
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+                {
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+                },
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+                  }
+                },
+                {
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+                    "symbol": "media_hashes"
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+                  "val": {
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+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
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+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": {
+              "vec": [
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+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
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+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
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+        "ext": "v0",
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+              {
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+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
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+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
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+                "symbol": "fn_call"
+              },
+              {
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+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
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+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
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+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_transfer_product_ownership.1.json b/smart-contract/contracts/test_snapshots/test/test_transfer_product_ownership.1.json
new file mode 100644
index 00000000..7c855c96
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_transfer_product_ownership.1.json
@@ -0,0 +1,1342 @@
+{
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
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+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "transfer_product"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "string": "COFFEE-ETH-001"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": false
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_unauthorized_actor_cannot_add_event.1.json b/smart-contract/contracts/test_snapshots/test/test_unauthorized_actor_cannot_add_event.1.json
new file mode 100644
index 00000000..85bb23a2
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_unauthorized_actor_cannot_add_event.1.json
@@ -0,0 +1,1019 @@
+{
+  "generators": {
+    "address": 3,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": [
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "ActiveProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      },
+                      {
+                        "key": {
+                          "vec": [
+                            {
+                              "symbol": "TotalProducts"
+                            }
+                          ]
+                        },
+                        "val": {
+                          "u64": 1
+                        }
+                      }
+                    ]
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Premium single-origin coffee from Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Yirgacheffe, Ethiopia"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "deactivation_info"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": "Premium single-origin coffee from Ethiopia"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 3
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_tracking_event"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    },
+                    {
+                      "string": "Farm"
+                    },
+                    {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    },
+                    {
+                      "string": ""
+                    },
+                    {
+                      "map": []
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test/test_unauthorized_cannot_add_authorized_actor.1.json b/smart-contract/contracts/test_snapshots/test/test_unauthorized_cannot_add_authorized_actor.1.json
new file mode 100644
index 00000000..2ab8c1b4
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test/test_unauthorized_cannot_add_authorized_actor.1.json
@@ -0,0 +1,1070 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Auth"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Auth"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Coffee"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": ""
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "COFFEE-ETH-001"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Organic Coffee Beans"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Yirgacheffe, Ethiopia"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventIds"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventIds"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "ProductEventTimestamps"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "ProductEventTimestamps"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "vec": []
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
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+                    "storage": null
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+        ]
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+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 801925984706572462
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 5541220902715666415
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": {
+                  "ledger_key_nonce": {
+                    "nonce": 5541220902715666415
+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
+              }
+            },
+            "ext": "v0"
+          },
+          15
+        ]
+      ],
+      [
+        {
+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_code": {
+                "ext": "v0",
+                "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+                "code": ""
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ]
+    ]
+  },
+  "events": [
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": {
+              "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
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+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "init"
+              }
+            ],
+            "data": "void"
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "string": "Organic Coffee Beans"
+                },
+                {
+                  "string": ""
+                },
+                {
+                  "string": "Yirgacheffe, Ethiopia"
+                },
+                {
+                  "string": "Coffee"
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "vec": []
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "product_registered"
+              },
+              {
+                "string": "COFFEE-ETH-001"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "register_product"
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "active"
+                  },
+                  "val": {
+                    "bool": true
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "category"
+                  },
+                  "val": {
+                    "string": "Coffee"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "certifications"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "created_at"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "custom"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "description"
+                  },
+                  "val": {
+                    "string": ""
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "id"
+                  },
+                  "val": {
+                    "string": "COFFEE-ETH-001"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "media_hashes"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "name"
+                  },
+                  "val": {
+                    "string": "Organic Coffee Beans"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "origin"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Yirgacheffe, Ethiopia"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "owner"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "tags"
+                  },
+                  "val": {
+                    "vec": []
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "COFFEE-ETH-001"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_authorized_actor"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 3
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 3
+                }
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "contract try_call failed"
+                },
+                {
+                  "symbol": "add_authorized_actor"
+                },
+                {
+                  "vec": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                    },
+                    {
+                      "string": "COFFEE-ETH-001"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test_auth/test_authorization_contract_flow.1.json b/smart-contract/contracts/test_snapshots/test_auth/test_authorization_contract_flow.1.json
new file mode 100644
index 00000000..e422ec63
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test_auth/test_authorization_contract_flow.1.json
@@ -0,0 +1,860 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "remove_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test_auth/test_cl_contract_uses_shared_auth.1.json b/smart-contract/contracts/test_snapshots/test_auth/test_cl_contract_uses_shared_auth.1.json
new file mode 100644
index 00000000..7e570fba
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test_auth/test_cl_contract_uses_shared_auth.1.json
@@ -0,0 +1,2112 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "add_authorized_actor",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "add_tracking_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Initial harvest"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ]
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Authorized"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Authorized"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": true
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Owner"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Owner"
+                    },
+                    {
+                      "string": "PROD1"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
+                      "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                    },
+                    "storage": null
+                  }
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Admin"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Admin"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "AuthContract"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "AuthContract"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Event"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Event"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "actor"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "data_hash"
+                      },
+                      "val": {
+                        "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_id"
+                      },
+                      "val": {
+                        "u64": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "event_type"
+                      },
+                      "val": {
+                        "symbol": "HARVEST"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "location"
+                      },
+                      "val": {
+                        "string": "Farm A"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "metadata"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "note"
+                      },
+                      "val": {
+                        "string": "Initial harvest"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "product_id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "timestamp"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    }
+                  ]
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventSeq"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventSeq"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeCount"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "HARVEST"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeCount"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "EventTypeIndex"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "u64": 1
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "EventTypeIndex"
+                    },
+                    {
+                      "string": "PROD1"
+                    },
+                    {
+                      "symbol": "HARVEST"
+                    },
+                    {
+                      "u64": 1
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "u64": 1
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Product"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Product"
+                    },
+                    {
+                      "string": "PROD1"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "active"
+                      },
+                      "val": {
+                        "bool": true
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "created_at"
+                      },
+                      "val": {
+                        "u64": 0
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "deactivation_info"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin"
+                      },
+                      "val": {
+                        "map": [
+                          {
+                            "key": {
+                              "symbol": "location"
+                            },
+                            "val": {
+                              "string": "Origin"
+                            }
+                          }
+                        ]
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "owner"
+                      },
+                      "val": {
+                        "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
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+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "HARVEST"
+                },
+                {
+                  "string": "Farm A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Initial harvest"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_call"
+              },
+              {
+                "bytes": "0000000000000000000000000000000000000000000000000000000000000001"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "vec": [
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000001",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "is_authorized"
+              }
+            ],
+            "data": {
+              "bool": true
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "contract",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "tracking_event"
+              },
+              {
+                "string": "PROD1"
+              },
+              {
+                "u64": 1
+              }
+            ],
+            "data": {
+              "map": [
+                {
+                  "key": {
+                    "symbol": "actor"
+                  },
+                  "val": {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "data_hash"
+                  },
+                  "val": {
+                    "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": 1
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_type"
+                  },
+                  "val": {
+                    "symbol": "HARVEST"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "location"
+                  },
+                  "val": {
+                    "string": "Farm A"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "metadata"
+                  },
+                  "val": {
+                    "map": []
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "note"
+                  },
+                  "val": {
+                    "string": "Initial harvest"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "timestamp"
+                  },
+                  "val": {
+                    "u64": 0
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "add_tracking_event"
+              }
+            ],
+            "data": {
+              "u64": 1
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test_auth/test_product_lifecycle.1.json b/smart-contract/contracts/test_snapshots/test_auth/test_product_lifecycle.1.json
new file mode 100644
index 00000000..d415f0ca
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test_auth/test_product_lifecycle.1.json
@@ -0,0 +1,855 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "deactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "string": "Testing"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "reactivate_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "string": "PROD1"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/test_auth/test_registration_and_stats.1.json b/smart-contract/contracts/test_snapshots/test_auth/test_registration_and_stats.1.json
new file mode 100644
index 00000000..217176e7
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/test_auth/test_registration_and_stats.1.json
@@ -0,0 +1,769 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_before_init_fails.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_before_init_fails.1.json
new file mode 100644
index 00000000..b6dae70b
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_before_init_fails.1.json
@@ -0,0 +1,61 @@
+{
+  "generators": {
+    "address": 2,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_metadata_validation.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_metadata_validation.1.json
new file mode 100644
index 00000000..7c6091f3
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_metadata_validation.1.json
@@ -0,0 +1,816 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_when_paused_fails_and_unpause_restores.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_when_paused_fails_and_unpause_restores.1.json
new file mode 100644
index 00000000..755301ad
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_when_paused_fails_and_unpause_restores.1.json
@@ -0,0 +1,1288 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "pause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "unpause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Warehouse A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Product created"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
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+              "map": [
+                {
+                  "key": {
+                    "symbol": "event"
+                  },
+                  "val": {
+                    "map": [
+                      {
+                        "key": {
+                          "symbol": "actor"
+                        },
+                        "val": {
+                          "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "data_hash"
+                        },
+                        "val": {
+                          "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "event_id"
+                        },
+                        "val": {
+                          "u64": "1"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "event_type"
+                        },
+                        "val": {
+                          "symbol": "created"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "location"
+                        },
+                        "val": {
+                          "string": "Warehouse A"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "metadata"
+                        },
+                        "val": {
+                          "map": []
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "note"
+                        },
+                        "val": {
+                          "string": "Product created"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "product_id"
+                        },
+                        "val": {
+                          "string": "PROD1"
+                        }
+                      },
+                      {
+                        "key": {
+                          "symbol": "timestamp"
+                        },
+                        "val": {
+                          "u64": "0"
+                        }
+                      }
+                    ]
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "event_id"
+                  },
+                  "val": {
+                    "u64": "1"
+                  }
+                },
+                {
+                  "key": {
+                    "symbol": "product_id"
+                  },
+                  "val": {
+                    "string": "PROD1"
+                  }
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_with_metadata.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_with_metadata.1.json
new file mode 100644
index 00000000..736c1e42
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_event_with_metadata.1.json
@@ -0,0 +1,1125 @@
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+                    "val": {
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+                    "key": {
+                      "symbol": "data_hash"
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+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
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+                  {
+                    "key": {
+                      "symbol": "event_id"
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+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
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+                  {
+                    "key": {
+                      "symbol": "location"
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+                    "val": {
+                      "string": "Warehouse A"
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+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "humidity"
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+                          "val": {
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+                        {
+                          "key": {
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+                          "val": {
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+                    "val": {
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+        "live_until": 4095
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
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+          "ext": "v0"
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+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
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+                }
+              },
+              "durability": "temporary",
+              "val": "void"
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+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
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+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_multiple_events.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_multiple_events.1.json
new file mode 100644
index 00000000..74bfa100
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_multiple_events.1.json
@@ -0,0 +1,1284 @@
+{
+  "generators": {
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+    "nonce": 0,
+    "mux_id": 0
+  },
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+    [],
+    [],
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+        {
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+              "function_name": "init",
+              "args": [
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
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+                }
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+        }
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+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
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+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "shipped"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Warehouse A"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "First event"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "shipped"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Warehouse A"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Second event"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "shipped"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_tracking_event.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_tracking_event.1.json
new file mode 100644
index 00000000..647e37f0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_add_tracking_event.1.json
@@ -0,0 +1,1091 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Warehouse A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Product created"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Warehouse A"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Product created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_event_count_by_type.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_event_count_by_type.1.json
new file mode 100644
index 00000000..b16a8693
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_event_count_by_type.1.json
@@ -0,0 +1,1508 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Warehouse A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Created"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Warehouse A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Shipped"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "shipped"
+                },
+                {
+                  "string": "Warehouse A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Shipped again"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
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+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
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+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "2032731177588607455"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event.1.json
new file mode 100644
index 00000000..647e37f0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event.1.json
@@ -0,0 +1,1091 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "function_name": "register_product",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "category"
+                      },
+                      "val": {
+                        "string": "Category"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "certifications"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "custom"
+                      },
+                      "val": {
+                        "map": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "description"
+                      },
+                      "val": {
+                        "string": "Description"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "id"
+                      },
+                      "val": {
+                        "string": "PROD1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "media_hashes"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "name"
+                      },
+                      "val": {
+                        "string": "Test Product"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "origin_location"
+                      },
+                      "val": {
+                        "string": "Origin"
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "tags"
+                      },
+                      "val": {
+                        "vec": []
+                      }
+                    }
+                  ]
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "tracking_add_event",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                },
+                {
+                  "string": "PROD1"
+                },
+                {
+                  "symbol": "created"
+                },
+                {
+                  "string": "Warehouse A"
+                },
+                {
+                  "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                },
+                {
+                  "string": "Product created"
+                },
+                {
+                  "map": []
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Owner"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Auth"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": true
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Product"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "active"
+                    },
+                    "val": {
+                      "bool": true
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "category"
+                    },
+                    "val": {
+                      "string": "Category"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "certifications"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "created_at"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "custom"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "deactivation_info"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "description"
+                    },
+                    "val": {
+                      "string": "Description"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "media_hashes"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "name"
+                    },
+                    "val": {
+                      "string": "Test Product"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "origin"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "location"
+                          },
+                          "val": {
+                            "string": "Origin"
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "owner"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "tags"
+                    },
+                    "val": {
+                      "vec": []
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": []
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Category"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Origin"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "SearchIndex"
+                  },
+                  {
+                    "vec": [
+                      {
+                        "symbol": "Keyword"
+                      },
+                      {
+                        "string": "Test Product"
+                      }
+                    ]
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": [
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ActiveProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "ReentrancyLock"
+                          },
+                          {
+                            "symbol": "register_product"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "bool": false
+                      }
+                    },
+                    {
+                      "key": {
+                        "vec": [
+                          {
+                            "symbol": "TotalProducts"
+                          }
+                        ]
+                      },
+                      "val": {
+                        "u64": "1"
+                      }
+                    }
+                  ]
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Warehouse A"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Product created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event_before_init_fails.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event_before_init_fails.1.json
new file mode 100644
index 00000000..91b8c37f
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event_before_init_fails.1.json
@@ -0,0 +1,297 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
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+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
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+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
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+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
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+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
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+                  },
+                  "storage": null
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+        },
+        "live_until": 4095
+      },
+      {
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+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event_not_found.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event_not_found.1.json
new file mode 100644
index 00000000..ac163975
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_event_not_found.1.json
@@ -0,0 +1,513 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0
+  },
+  "auth": [
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 20,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
+                "val": {
+                  "contract_instance": {
+                    "executable": {
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+                  }
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+        ]
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+            "key": {
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+                  "symbol": "Admin"
+                }
+              ]
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+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+                      "symbol": "Admin"
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+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
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+            "ext": "v0"
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+        ]
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+      [
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
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+                {
+                  "symbol": "AuthContract"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "AuthContract"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": {
+              "vec": [
+                {
+                  "symbol": "Paused"
+                }
+              ]
+            },
+            "durability": "persistent"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+                "key": {
+                  "vec": [
+                    {
+                      "symbol": "Paused"
+                    }
+                  ]
+                },
+                "durability": "persistent",
+                "val": {
+                  "bool": false
+                }
+              }
+            },
+            "ext": "v0"
+          },
+          4095
+        ]
+      ],
+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
+          }
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+        [
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+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
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+            "ext": "v0"
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+      [
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+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+            "key": "ledger_key_contract_instance",
+            "durability": "persistent"
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+            "data": {
+              "contract_data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+                "key": "ledger_key_contract_instance",
+                "durability": "persistent",
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+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
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+            "durability": "persistent"
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+            "data": {
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+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
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+                "durability": "persistent",
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+      [
+        {
+          "contract_data": {
+            "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+            "key": {
+              "ledger_key_nonce": {
+                "nonce": 801925984706572462
+              }
+            },
+            "durability": "temporary"
+          }
+        },
+        [
+          {
+            "last_modified_ledger_seq": 0,
+            "data": {
+              "contract_data": {
+                "ext": "v0",
+                "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+                "key": {
+                  "ledger_key_nonce": {
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+                  }
+                },
+                "durability": "temporary",
+                "val": "void"
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+      ],
+      [
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+          "contract_code": {
+            "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
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+        },
+        [
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+                },
+                {
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+                }
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+            }
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+        }
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+      "failed_call": false
+    },
+    {
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+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000002",
+        "type_": "diagnostic",
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+                "symbol": "fn_return"
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+              {
+                "symbol": "init"
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+          }
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+      "failed_call": false
+    },
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+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
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+                "symbol": "fn_call"
+              },
+              {
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+              },
+              {
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+              }
+            ],
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+            }
+          }
+        }
+      },
+      "failed_call": false
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000004",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "fn_return"
+              },
+              {
+                "symbol": "get_event"
+              }
+            ],
+            "data": {
+              "error": {
+                "contract": 5
+              }
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": "0000000000000000000000000000000000000000000000000000000000000004",
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 5
+                }
+              }
+            ],
+            "data": {
+              "string": "escalating Ok(ScErrorType::Contract) frame-exit to Err"
+            }
+          }
+        }
+      },
+      "failed_call": true
+    },
+    {
+      "event": {
+        "ext": "v0",
+        "contract_id": null,
+        "type_": "diagnostic",
+        "body": {
+          "v0": {
+            "topics": [
+              {
+                "symbol": "error"
+              },
+              {
+                "error": {
+                  "contract": 5
+                }
+              }
+            ],
+            "data": {
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+                },
+                {
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+                },
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+                    }
+                  ]
+                }
+              ]
+            }
+          }
+        }
+      },
+      "failed_call": false
+    }
+  ]
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_product_event_ids.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_product_event_ids.1.json
new file mode 100644
index 00000000..298e1504
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_get_product_event_ids.1.json
@@ -0,0 +1,1284 @@
+{
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+    "nonce": 0,
+    "mux_id": 0
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+        }
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+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Warehouse A"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Event 1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Event"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "actor"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "data_hash"
+                    },
+                    "val": {
+                      "bytes": "0000000000000000000000000000000000000000000000000000000000000000"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_id"
+                    },
+                    "val": {
+                      "u64": "2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "event_type"
+                    },
+                    "val": {
+                      "symbol": "created"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "location"
+                    },
+                    "val": {
+                      "string": "Warehouse A"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "metadata"
+                    },
+                    "val": {
+                      "map": []
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "note"
+                    },
+                    "val": {
+                      "string": "Event 2"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "product_id"
+                    },
+                    "val": {
+                      "string": "PROD1"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventSeq"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeCount"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  },
+                  {
+                    "u64": "0"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "1"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EventTypeIndex"
+                  },
+                  {
+                    "string": "PROD1"
+                  },
+                  {
+                    "symbol": "created"
+                  },
+                  {
+                    "u64": "1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "u64": "2"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ProductEventIds"
+                  },
+                  {
+                    "string": "PROD1"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "u64": "1"
+                  },
+                  {
+                    "u64": "2"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "4837995959683129791"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAMDR4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_init_already_initialized_fails.1.json b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_init_already_initialized_fails.1.json
new file mode 100644
index 00000000..41ca854c
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/tracking/test_tracking/test_init_already_initialized_fails.1.json
@@ -0,0 +1,322 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Initializer"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_emergency_pause_unpause.1.json b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_emergency_pause_unpause.1.json
new file mode 100644
index 00000000..23da5db6
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_emergency_pause_unpause.1.json
@@ -0,0 +1,409 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "emergency_pause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "symbol": "test"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "pause",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "emergency_unpause",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": [
+            {
+              "function": {
+                "contract_fn": {
+                  "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+                  "function_name": "unpause",
+                  "args": [
+                    {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  ]
+                }
+              },
+              "sub_invocations": []
+            }
+          ]
+        }
+      ]
+    ],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "EmergencyPause"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_unauthorized_access.1.json b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_unauthorized_access.1.json
new file mode 100644
index 00000000..3fcf1f68
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_unauthorized_access.1.json
@@ -0,0 +1,273 @@
+{
+  "generators": {
+    "address": 6,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_upgrade_flow.1.json b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_upgrade_flow.1.json
new file mode 100644
index 00000000..1315d78a
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_upgrade_flow.1.json
@@ -0,0 +1,556 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "initiate_upgrade",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "map": [
+                    {
+                      "key": {
+                        "symbol": "major"
+                      },
+                      "val": {
+                        "u32": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "minor"
+                      },
+                      "val": {
+                        "u32": 1
+                      }
+                    },
+                    {
+                      "key": {
+                        "symbol": "patch"
+                      },
+                      "val": {
+                        "u32": 0
+                      }
+                    }
+                  ]
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                },
+                {
+                  "bool": false
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "function_name": "complete_upgrade",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "ContractVersion"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "major"
+                    },
+                    "val": {
+                      "u32": 1
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "minor"
+                    },
+                    "val": {
+                      "u32": 1
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "patch"
+                    },
+                    "val": {
+                      "u32": 0
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "UpgradeInfo"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "map": [
+                  {
+                    "key": {
+                      "symbol": "migration_required"
+                    },
+                    "val": {
+                      "bool": false
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "new_contract_address"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAK3IM"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "new_version"
+                    },
+                    "val": {
+                      "map": [
+                        {
+                          "key": {
+                            "symbol": "major"
+                          },
+                          "val": {
+                            "u32": 1
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "minor"
+                          },
+                          "val": {
+                            "u32": 1
+                          }
+                        },
+                        {
+                          "key": {
+                            "symbol": "patch"
+                          },
+                          "val": {
+                            "u32": 0
+                          }
+                        }
+                      ]
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "upgrade_timestamp"
+                    },
+                    "val": {
+                      "u64": "0"
+                    }
+                  },
+                  {
+                    "key": {
+                      "symbol": "upgraded_by"
+                    },
+                    "val": {
+                      "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                    }
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "UpgradeStatus"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "vec": [
+                  {
+                    "symbol": "Completed"
+                  }
+                ]
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "1033654523790656264"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "5541220902715666415"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_upgrade_validation.1.json b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_upgrade_validation.1.json
new file mode 100644
index 00000000..9964ddf8
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_upgrade_validation.1.json
@@ -0,0 +1,273 @@
+{
+  "generators": {
+    "address": 5,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_version_tracking.1.json b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_version_tracking.1.json
new file mode 100644
index 00000000..230bf7f0
--- /dev/null
+++ b/smart-contract/contracts/test_snapshots/upgrade/test_upgrade/test_version_tracking.1.json
@@ -0,0 +1,272 @@
+{
+  "generators": {
+    "address": 4,
+    "nonce": 0,
+    "mux_id": 0
+  },
+  "auth": [
+    [],
+    [],
+    [],
+    [
+      [
+        "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+        {
+          "function": {
+            "contract_fn": {
+              "contract_address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "function_name": "init",
+              "args": [
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+                },
+                {
+                  "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+                }
+              ]
+            }
+          },
+          "sub_invocations": []
+        }
+      ]
+    ],
+    [],
+    []
+  ],
+  "ledger": {
+    "protocol_version": 25,
+    "sequence_number": 0,
+    "timestamp": 0,
+    "network_id": "0000000000000000000000000000000000000000000000000000000000000000",
+    "base_reserve": 0,
+    "min_persistent_entry_ttl": 4096,
+    "min_temp_entry_ttl": 16,
+    "max_entry_ttl": 6312000,
+    "ledger_entries": [
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "MainContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAD2KM",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4",
+              "key": {
+                "ledger_key_nonce": {
+                  "nonce": "801925984706572462"
+                }
+              },
+              "durability": "temporary",
+              "val": "void"
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 6311999
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Admin"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAFCT4"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "AuthContract"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "address": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHK3M"
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": {
+                "vec": [
+                  {
+                    "symbol": "Paused"
+                  }
+                ]
+              },
+              "durability": "persistent",
+              "val": {
+                "bool": false
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_data": {
+              "ext": "v0",
+              "contract": "CAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAITA4",
+              "key": "ledger_key_contract_instance",
+              "durability": "persistent",
+              "val": {
+                "contract_instance": {
+                  "executable": {
+                    "wasm": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
+                  },
+                  "storage": null
+                }
+              }
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      },
+      {
+        "entry": {
+          "last_modified_ledger_seq": 0,
+          "data": {
+            "contract_code": {
+              "ext": "v0",
+              "hash": "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
+              "code": ""
+            }
+          },
+          "ext": "v0"
+        },
+        "live_until": 4095
+      }
+    ]
+  },
+  "events": []
+}
\ No newline at end of file
diff --git a/smart-contract/scripts/deploy.sh b/smart-contract/scripts/deploy.sh
new file mode 100755
index 00000000..e9e8b786
--- /dev/null
+++ b/smart-contract/scripts/deploy.sh
@@ -0,0 +1,114 @@
+#!/bin/bash
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+# Default values
+NETWORK="testnet"
+CONTRACT_NAME="hello_world"
+WASM_PATH="target/wasm32v1-none/release/${CONTRACT_NAME}.wasm"
+
+# Parse arguments
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --network)
+      NETWORK="$2"
+      shift 2
+      ;;
+    --source-key)
+      SOURCE_KEY="$2"
+      shift 2
+      ;;
+    --contract-name)
+      CONTRACT_NAME="$2"
+      WASM_PATH="target/wasm32v1-none/release/${CONTRACT_NAME}.wasm"
+      shift 2
+      ;;
+    --help)
+      echo "Usage: $0 [OPTIONS]"
+      echo "  --network NETWORK     Network (testnet, mainnet, futurenet)"
+      echo "  --source-key KEY      Deployer secret key"
+      echo "  --contract-name NAME  Contract name (default: hello_world)"
+      exit 0
+      ;;
+    *)
+      echo -e "${RED}Unknown option: $1${NC}"
+      echo "Use --help for usage information"
+      exit 1
+      ;;
+  esac
+done
+
+echo -e "${GREEN}Building contract...${NC}"
+cd "$(dirname "$0")/.."
+cd contracts
+
+# Build the contract
+cargo build --target wasm32v1-none --release
+
+if [ ! -f "../${WASM_PATH}" ]; then
+  echo -e "${RED}Error: WASM file not found at ${WASM_PATH}${NC}"
+  exit 1
+fi
+
+echo -e "${GREEN}Contract built successfully${NC}"
+
+if [ -z "$SOURCE_KEY" ]; then
+  if [ -z "$SOROBAN_SECRET_KEY" ]; then
+    echo -e "${RED}Error: No source key provided${NC}"
+    echo "Set SOROBAN_SECRET_KEY or use --source-key"
+    exit 1
+  fi
+  SOURCE_KEY="$SOROBAN_SECRET_KEY"
+fi
+
+if [ "${#SOURCE_KEY}" -lt 50 ] || ([ "${SOURCE_KEY:0:1}" != "S" ] && [ "${SOURCE_KEY:0:2}" != "SB" ]); then
+  echo -e "${RED}Error: Invalid secret key format${NC}"
+  echo "Secret key must start with 'S' or 'SB' and be at least 50 characters"
+  echo "Get a key from: https://laboratory.stellar.org/#account-creator"
+  exit 1
+fi
+
+echo -e "${GREEN}Deploying to ${NETWORK}...${NC}"
+
+# Deploy the contract
+echo -e "${YELLOW}Deploying contract...${NC}"
+DEPLOY_OUTPUT=$(soroban contract deploy \
+  --wasm "../${WASM_PATH}" \
+  --source-account "$SOURCE_KEY" \
+  --network "$NETWORK" 2>&1)
+
+DEPLOY_EXIT_CODE=$?
+
+if [ $DEPLOY_EXIT_CODE -ne 0 ]; then
+  echo -e "${RED}Error: Deployment failed${NC}"
+  echo "$DEPLOY_OUTPUT"
+  exit 1
+fi
+
+CONTRACT_ID=$(echo "$DEPLOY_OUTPUT" | grep -E "^C[A-Z0-9]{55}$" | tail -1 | tr -d '[:space:]')
+
+if [ -z "$CONTRACT_ID" ]; then
+  echo -e "${RED}Error: Failed to extract contract ID${NC}"
+  echo "$DEPLOY_OUTPUT"
+  exit 1
+fi
+
+echo -e "${GREEN}Deployed: ${CONTRACT_ID}${NC}"
+
+ENV_FILE="../.env"
+echo "CONTRACT_ID=${CONTRACT_ID}" > "$ENV_FILE"
+echo "NETWORK=${NETWORK}" >> "$ENV_FILE"
+
+FRONTEND_ENV_FILE="../../frontend/.env.local"
+if [ -f "$FRONTEND_ENV_FILE" ]; then
+  sed -i '/^NEXT_PUBLIC_CONTRACT_ID=/d' "$FRONTEND_ENV_FILE"
+  sed -i '/^NEXT_PUBLIC_STELLAR_NETWORK=/d' "$FRONTEND_ENV_FILE"
+fi
+echo "NEXT_PUBLIC_CONTRACT_ID=${CONTRACT_ID}" >> "$FRONTEND_ENV_FILE"
+echo "NEXT_PUBLIC_STELLAR_NETWORK=${NETWORK}" >> "$FRONTEND_ENV_FILE"
diff --git a/smart-contract/scripts/setup-deployment.sh b/smart-contract/scripts/setup-deployment.sh
new file mode 100755
index 00000000..815320cc
--- /dev/null
+++ b/smart-contract/scripts/setup-deployment.sh
@@ -0,0 +1,64 @@
+#!/bin/bash
+
+set -e
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+NC='\033[0m' # No Color
+
+echo -e "${GREEN}ChainLogistics Deployment Setup${NC}"
+echo ""
+
+# Check if Soroban CLI is installed
+if command -v soroban &> /dev/null; then
+    echo -e "${GREEN}✓ Soroban CLI is already installed${NC}"
+    soroban --version
+else
+    echo -e "${YELLOW}Installing Soroban CLI...${NC}"
+    echo ""
+    echo "This may take several minutes. Please wait..."
+    
+    # Check for required system dependencies
+    if ! dpkg -l | grep -q libudev-dev; then
+        echo -e "${YELLOW}Missing system dependency: libudev-dev${NC}"
+        echo "Please run: sudo apt-get install -y libudev-dev pkg-config"
+        echo ""
+        read -p "Have you installed the dependencies? (y/N): " -n 1 -r
+        echo
+        if [[ ! $REPLY =~ ^[Yy]$ ]]; then
+            echo -e "${RED}Please install dependencies first and run this script again.${NC}"
+            exit 1
+        fi
+    fi
+    
+    # Install Soroban CLI
+    cargo install --locked soroban-cli
+    
+    # Verify installation
+    if command -v soroban &> /dev/null; then
+        echo -e "${GREEN}✓ Soroban CLI installed successfully!${NC}"
+        soroban --version
+    else
+        # Check if it's in cargo bin but not in PATH
+        if [ -f ~/.cargo/bin/soroban ]; then
+            echo -e "${YELLOW}Soroban CLI installed but not in PATH${NC}"
+            echo "Add this to your ~/.bashrc or ~/.zshrc:"
+            echo "  export PATH=\"\$HOME/.cargo/bin:\$PATH\""
+            echo ""
+            echo "Then run: source ~/.bashrc (or source ~/.zshrc)"
+        else
+            echo -e "${RED}Installation may have failed. Check the error messages above.${NC}"
+            exit 1
+        fi
+    fi
+fi
+
+echo ""
+echo -e "${GREEN}Setup complete!${NC}"
+echo ""
+echo "Next steps:"
+echo "1. Get a Stellar Testnet secret key from: https://laboratory.stellar.org/#account-creator"
+echo "2. Run the deployment script:"
+echo "   ./scripts/deploy.sh --network testnet --source-key \"YOUR_SECRET_KEY\""
diff --git a/status.txt b/status.txt
new file mode 100644
index 00000000..d3e6e7a9
--- /dev/null
+++ b/status.txt
@@ -0,0 +1,8 @@
+On branch main
+Your branch is up to date with 'origin/main'.
+
+Untracked files:
+  (use "git add <file>..." to include in what will be committed)
+	status.txt
+
+nothing added to commit but untracked files present (use "git add" to track)