On‑Chain Snippet Ownership Proof

[femiolutayo]

##closes #159

Add On-Chain Snippet Ownership Proofs

Summary

• Add canonical Stellar wallet signing and verification for snippet ownership.
• Generate and validate ownership proofs during snippet creation.
• Persist proofs in an append-only database table.
• Anchor verified proofs on Stellar for auditability.
• Add ownership proof verification API endpoint.
• Display verified ownership badges in the frontend.
• Add audit logging for proof generation and verification attempts.
• Add tests for valid, tampered, wrong-wallet, and replay scenarios.

API

GET /api/snippets/:id/ownership-proof

Returns:

{
  "verified": true,
  "proof": {
    "snippetId": "...",
    "hash": "...",
    "ownerWallet": "...",
    "signature": "...",
    "createdAt": "...",
    "anchoredTransactionHash": "..."
  }
}

Database

Run:

scripts/add-snippet-ownership-proofs.sql

Testing

• Stellar signing smoke test passed.
• Changed files report no TypeScript diagnostics.
• Jest is currently blocked because jest-environment-jsdom is not installed.

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[SudiptaPaul-31]

@femiolutayo resolve conflicts and why so much code change like nearly so many lines of code are deleted are u sure what u did or just ur agent did whatever it can