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 0xa1daf1e2ec8da5fca2a68336e446ce254314d0678dd5a57a852f972297d1fef6. 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/a9bf74b0-85b0-47e3-8790-8c69b2d1aa8c.json and https://artists.proofprofile.net/proofs/artist/a9bf74b0-85b0-47e3-8790-8c69b2d1aa8c.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 0xe6ce12d76a066f27043fc1cdf5820dede946bf3c74028e8631491dad9b997524. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/UST8K1696631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936e37d9c3550b61c1646ddd1aaf19addcf45d7f6904a13f75f692a18dc618c7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UST8K1696634.
Parte Como Marinero, Regresa Como Leyenda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8559d4e45da0a46bc637e6562eca8b76f16e63b45aa8ee68366d947b524485. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UST8K1696635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f82d44db1fd9c8fda3120b8054d6c7593c88db9da9e00882248bf5d2b1e90e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA51838282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031ebc7a3d4b20f3e9468c8a38f1c011e7f21b47fe061c5edcdd2a03801167f9. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZDA71890143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a468d2fe22bf6d032123c75daf86c7a45cc1b206fe02d92fef53e2277c21802. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZDA71890142.
Serás el Mástíl de Mi Barco (Sesión Acústica)
Serás El Mástil De Mi Barco (Sesión Acústica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf223a37ce25f3f08347582c5f5e9bf8ba9b96fe1eb9b9d0db108d9b630dec063. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/USHM82081347.
Recuerdos Atrapados (Versiones Reimaginadas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21748a764c3d3b7e5b7d438f0b5ea584750767d878bd3fa1b4ca7352f97eb46. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GBLFP2233339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a04655855792dd42c4c0db31c79c846a787ad8eb88b66b325054287287f712a. 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/GBLFP2304124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326cba5118e0832851e7ec184d20e8a7b399f3177eaa7fc27544e856e688ed41. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GBLFP2407186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab02e80c0b9da18db153f067edbe55b09362ed8b196201aae6a5af64288fedc1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/UKXN22402639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea010f62d1d51872d3d449134f9712b5e073371e75d14e548290e23e3cdfbd8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM92073437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcf30c4d4cf2d3e80488de23a998f7202c5fa3f74ea159c6a22c8d9ce6eceea. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFQ2132061.