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 0xb363c1fa0751fc027f3b0c46092f99ef198100151c2561e901b446fe6bd29a23. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/175f07d1-aa68-4d78-aa6d-9e7335aecd01.json and https://artists.proofprofile.net/proofs/artist/175f07d1-aa68-4d78-aa6d-9e7335aecd01.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).