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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef42aa3aeb341c5b19e421d055dbc0510bcec11bea7bae0e82494bcfb5bd22. 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/9854f1c2-258c-4321-b158-f44d4203e7e7.json and https://artists.proofprofile.net/proofs/artist/9854f1c2-258c-4321-b158-f44d4203e7e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97a3826df0afe2612101daf5064cd94890b9feeeaa9a7c5263460269c902cdd. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/ES7161751627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d083fc1195942c4802826dd0b795b3c224ee683e8ba591955b233c71b6f42dd. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES7161751628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf562b165d89541a5f7379ebc31b61bed5d4bd40fea640863903273341aff3bf4. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ES7161751623.
Caballo Prieto Azabache / Amor Salvaje / el Corralero / el Carretón
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ef9a56201704f700dc8bd17a90262c803c434ea602cb4db556cb054d1e5d4b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ES7161751626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4bd9038aead619e811848a1f440366326653a3bee0cf4f62118ade675a0420. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES7161751629.
Me Vas a Extrañar / y la Busqué / Ya Me Enteré / el Pajarito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c531bddb58d5feae729f7b60af6fce5b4d4ed176fc78cefdaf2cf17b5317847. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ES7161751630.
Morena de Mis Amores / la Carta Nº 3 / el Regreso Sabanales | Tu Eres Libre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199adff10c3e6e64e60f2c2f0545b72eadbb5bcf1d5d38954d4e126da2f3d613. Chain 2 (Bitcoin): anchored in block 957703 (2026-07-12T12:26:40Z), 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/ES71G1824252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e10a970a2e5bf70a63e4f2702a61f5a41840b10d7db9aa77160e28d8c3d3a0. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/ES7161801747.
Popurrí De Cumbias (En Vivo) [El Yandelazo,La Negra Merecumbe]