Stellar privacy best-practices addendum (Stellar-specific)

[truthixify]

Tier: M (2-4 days) Type: writing

Context

Generic privacy guide exists. Stellar has its own quirks: account-existence-leaks, memo metadata, federation DNS leakage, watcher anomalies. Add a Stellar-specific addendum.

Scope

Write docs/guides/stellar-privacy-best-practices.mdx:

• Account-existence leak: trustline operations reveal recipient is an existing account
• Memo metadata: text memos visible on-chain, don't put identifying info
• Federation DNS leakage: resolving name*domain.com queries DNS, traffic-correlation risk
• Stellar.expert + similar explorers index every account; treat stealth addresses as one-shot
• Sponsored withdrawal trail (sponsor address links sender to stealth withdraw)
• Recommendations for each scenario

Acceptance criteria

• Page committed
• Each leak vector explained with example
• Recommendations actionable (not generic)
• Linked from Privacy + SDK Stellar

Files to start with

• New: docs/guides/stellar-privacy-best-practices.mdx
• docs/guides/privacy-best-practices.mdx (existing generic)