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 0xe27929dc2126dbea993b761aad6259fabb2488ed6b008c1190e0c407f4c7faf3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffe8874a-aa4e-4a2d-b3a5-e330290c5f4c.json and https://artists.proofprofile.net/proofs/artist/ffe8874a-aa4e-4a2d-b3a5-e330290c5f4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).