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 0xc8dea97fab2a11e68d2702a4266834f55bf4c52c3c8c2994623a9ee7b801d899. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa1f26b5-8a1f-46df-bd2b-0565828b0e2f.json and https://artists.proofprofile.net/proofs/artist/fa1f26b5-8a1f-46df-bd2b-0565828b0e2f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).