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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569ba9cc4c1ffc58a09d16714127e29d89e6543ca48434a8a8997e6cf799a120. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30ea196f-8a0e-4e80-8858-4bd3e1958bff.json and https://artists.proofprofile.net/proofs/artist/30ea196f-8a0e-4e80-8858-4bd3e1958bff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).