Stage343 extends Stage342 by independently verifying the external anchor layer.
Stage342 created external anchor evidence:
session_manifest.json
↓
checkpoint witness
↓
GitHub Actions anchor intent
↓
OpenTimestamps support
↓
external_anchor_receipt.json
Stage343 verifies that evidence:
hash binding
↓
checkpoint witness verification
↓
Ed25519 witness verification
↓
GPG verification
↓
Sigstore verification
↓
OTS verification or pending status
↓
GitHub Actions anchor intent verification
↓
independent_verification_report.json
What Stage343 Adds
Independent verification report
Verification summary
Hash binding verification
Checkpoint witness verification
Ed25519 witness verification
GPG verification
Sigstore verification
OpenTimestamps verification or pending status
GitHub Actions anchor intent verification
Public Files
docs/verification/independent_verification_report.json
docs/verification/verification_summary.txt
docs/anchors/external_anchor_receipt.json
docs/anchors/github_actions_anchor_intent.json
docs/checkpoints/checkpoint_witness.json
docs/session/session_manifest.json
docs/session/signed_session_manifest.json
Verification
Run:
python3 core/verify_external_anchor_layer.py
The core verification engine is intentionally excluded from GitHub.
Public verification result:
docs/verification/independent_verification_report.json
docs/verification/verification_summary.txt
Safety Boundary
Stage343 does not publish:
private keys
attack code
dangerous prompts
exploit payloads
bypass procedures
automated attack logic
Meaning
Stage343 moves REMEDA/QSP from:
external anchor creation
to:
external anchor verification
This completes the Stage254 direction more fully:
session manifest
↓
witness
↓
external anchors
↓
independent verification
License
MIT License
Copyright (c) 2025 Motohiro Suzuki