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 0x496bb945e7cee899865ff57e05e90cfd9fd912d61c70190e3a9ec6360704ba8f. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07ef3480-c0c9-4332-8a52-929e1ca822b8.json and https://artists.proofprofile.net/proofs/artist/07ef3480-c0c9-4332-8a52-929e1ca822b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Di VIBES～Japanese Reggae Selection 2010～