1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95ba52e16be833225f1ce04f38c7a50ba3c970941850f4e6f800c68b657e0ec. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4bb846bf-0d20-4b4c-9294-1bdc8d91f3fc.json and https://artists.proofprofile.net/proofs/artist/4bb846bf-0d20-4b4c-9294-1bdc8d91f3fc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).