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 0x8b21a3627fc95f41e6f03c8b648105d03e81c18b07879425e5bbc6d9379f1e9c. 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/967db74a-5b6d-4867-b430-2d5911646624.json and https://artists.proofprofile.net/proofs/artist/967db74a-5b6d-4867-b430-2d5911646624.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Purp (For the First Time) [feat. Gene Stovall]