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 0xa7944cadbbcd81f1db9e824731b6a3ef9fb9a3c14a1616904fc43b0cc0dbfcc4. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d38c74d-6373-4d42-b7e5-4612b28b46af.json and https://artists.proofprofile.net/proofs/artist/8d38c74d-6373-4d42-b7e5-4612b28b46af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).