1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1357f671e7247ecf8fbe461cd3c72c4bee5fc44afa4941095667667b67331d91. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d99d1cf6-1a4f-4963-a567-c0c8636d4fc2.json and https://artists.proofprofile.net/proofs/artist/d99d1cf6-1a4f-4963-a567-c0c8636d4fc2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Nossa Especialidade É Ser Especial – por um Mundo Mais Acessível e Humano (2023)
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Meu Largo É Amado, Repleto de Histórias... Tem Arte Sacra, Arte Nata, Água Benta, Aguardente, Bares e Beatas Brotam Neste Chão. Em Verde e Rosa, Eu Canto Com Emoção (2025)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f357709bc1e01ae274235bcc3d3a90c6c29b3efafbce397eb1154f42f43af2. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:11:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2543383.