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 0xec2ed02b4514c45c33a3a31198b93ffa1de9c8b1c8171f854b1ae897346261f8. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8592994-a764-480b-b8d1-cd2fefb0e6ce.json and https://artists.proofprofile.net/proofs/artist/a8592994-a764-480b-b8d1-cd2fefb0e6ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).