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 0x72c06ded149eb63b8f834a6fe0e72b3888b83fc7935ce9bd0e33120b96d10af5. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2c3281a-07c7-4603-865b-0d73660298e4.json and https://artists.proofprofile.net/proofs/artist/b2c3281a-07c7-4603-865b-0d73660298e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Enforce The Sound 2022 - Extended Versions