{"name":"StayChain — dual-path immutable audit","patent_ref":"v9.2 Part 8.1 / Fig 3","fast_path":{"store":"Classical WORM (Cassandra)","role":"Low-latency append-only write","status":"emulated in this deployment"},"secure_path":{"store":"Private blockchain (StayChain)","role":"Tamper-evident chained blocks","signatures":"CRYSTALS-Dilithium (PQC)","status":"emulated; SHA-256 chain is real"},"witness_nodes":["ZA-JHB-01","ZA-CT-02","ZA-PTB-03","ZA-DBN-04"],"bft_quorum":"3/4 (tolerate 1 fault)","archive":"SPHINCS+ hash-based long-term archive (emulated)","real_vs_emulated":"SHA-256 hash chain + Merkle root are REAL; WORM/blockchain/witness/Dilithium/SPHINCS+ are the production design, emulated here.","endpoints":{"GET /staychain/verify":"Verify chain integrity + Merkle root + witness consensus (auth).","GET /staychain/blocks":"Recent StayChain blocks (auth).","GET /staychain/block/{height}":"One StayChain block by height (auth)."},"generated_at":"2026-09-03T16:10:34.287396+00:00"}