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 0xbbd28880e161337fea43ad95cc2464ad69d93638e60b90e2d4a09a926f27acca. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6cc447a5-563f-43dd-bd2a-a0bc912d7f51.json and https://artists.proofprofile.net/proofs/artist/6cc447a5-563f-43dd-bd2a-a0bc912d7f51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Samurai - Hamilton de Holanda (A Música de Djavan)