四堅情WOLF (邱鋒澤、陳零九、黃偉晉、賴晏駒)
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908446a55337c8f2009886c21380ff9d4a59d4abf5e28720c285a064972acaaa. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ce57d19-3f37-4e46-b8df-afa3f7ebab52.json and https://artists.proofprofile.net/proofs/artist/5ce57d19-3f37-4e46-b8df-afa3f7ebab52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).