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 0xdc276a8d6dc71678a0ffc6c0d0208b43d17bf4700dd81ed1ad71ef1f9f7b1c0e. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26219195-94e8-49c2-81e9-3696db6ad0d8.json and https://artists.proofprofile.net/proofs/artist/26219195-94e8-49c2-81e9-3696db6ad0d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).