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 0x643e533beed36c8d834435433b791cbcc1d9f61c2350ae309cec80af883b249c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e8f1c3a-3433-4899-a1dc-4d0154b17c6b.json and https://artists.proofprofile.net/proofs/artist/4e8f1c3a-3433-4899-a1dc-4d0154b17c6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sol Nosso de Cada Tempo (feat. Celso Sim)
Porto de Descanso (feat. Juliana Perdigão)
Tudo (feat. Filipe Catto, Leo Cavalcanti & Celso Sim)