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 0xdaf42a82253970eae03fee9467f8e18edd82f5058a632210a08e2a797b329773. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cef1cbec-4f67-46d9-89c5-a403f66ac0ad.json and https://artists.proofprofile.net/proofs/artist/cef1cbec-4f67-46d9-89c5-a403f66ac0ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Arrochadeira Atrás do Caminhão (Passagem de Som)
Não Tem Amor (Passagem de Som,Versão Piseiro)
Caiu no Meu Papin (Versão Piseiro Passagem de Som)
Mi Nena Lá Lá Lá (Versão Piseiro Passagem de Som)
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 0xbd40bb09d15cd39c88fdacf7fbfc57e10cd9bcdaf1cdd2058589108a4df93a77. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/BKJNU2300558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084370353bee693f4d8ca964a585e56087176e4000100aa80bfffb349a273b26. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BKJ7K2400132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e491793af5be61102379f6b84f450fc39dfef0c455ca0a10059b9bb71ec05bf. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:30:04Z), 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/ESA112441243.
Forrozinho Eu Não Vou Deixar Você Partir