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 0xcf039c7e79f1c5e0a1b15b7f8a67b162ce58c8ae402f8bf75bf9a4139a9aa0bf. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11d04ddc-03eb-4ab0-94b9-b182158f86ce.json and https://artists.proofprofile.net/proofs/artist/11d04ddc-03eb-4ab0-94b9-b182158f86ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Viola de Ouro, A Central dos Violeiros: 13 Anos