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 0x0ea2a19b61489136c17aa11ba6eb7947fb11d8ff4363e8b242f7a4049c6f982a. 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/ae9a951c-6a64-47b9-b5ce-88a7b7e9bf96.json and https://artists.proofprofile.net/proofs/artist/ae9a951c-6a64-47b9-b5ce-88a7b7e9bf96.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1173b35016f6775ee5763941c7504de8d7bfb3592ccd7faf0f456871db1a4c5d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151801359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7ddae974dbc1e01209555f6eed633ce771d45c50dba05034a100991908e927. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151900083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c60fd0b42e1b9fdc31a8964c64d5c42d359ac8c1f95433f7cfd1e0cd830b1f3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f6bf9ab429dd021a8cd1cf7d4aa60ac205ebd0b77a74739035eab9163a9ab5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf51e757592397c0b35b0f84b35c80a8fd14408997b3b83176b4e39b5ca9c33. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151802563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5934e5dcf0b396cc39435e8c790047422dfa9400e683f36c84b48a1bd7e29df4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151802265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298a0f6934c0f5d2408c913b0b92efb54291686511bd8ceb947566455d3d9311. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151801360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00432adec64300498cd7faf5ac2fcd5e9b1305a43320c889a640eb1de5f1e7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151802436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf150e328754271f75633a853c5ba0ae94ee99a46e2e3f3c38da81611ea6c277. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151900217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffafde51a3b8bb5d0445b49bcc186e36e844323cce2c5d86955c008d0d14d1ea. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e207720c55aa381f0047cc6f106c0555eb74cbafce02528fdb0e4c2c2e3cc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152000921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33730922f007fedf884f79febd8d3b097691824ecb9c53382a1f4aa3d6da6ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5152000953.
Soldadito de Hierro (feat. Dani Fernández)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7680c16916ce8fb311755c95428eb2c0e0dae2157a58a4d33d64ffc101a5a21e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151900995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edcec4dd6bc5948de7024f537cc7b819d955723b4db21a8ee2ca90570b18c43. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151901143.
Piedra y cristal (feat. Dani Fernández) - Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c8a6b227be6f29d7b729ba58a5b0e8feb4784805e1ed916814e1f415e67127. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5151901619.
Rock'n'rolles de Chiquillos (feat. Dani Fernández) - Versión Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486e67fb7f6bff0ceb018113baee25da445f8c0f2eea0a3767949645bda3d492. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES71G2006493.
Por si regresas (feat. Dani Fernandez) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ed82e80ae5cf86d1f229dfa3aa6aa59f45a03aa5998eea1d7e71bcf3f71a5b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5152001009.
Te esperaré toda la vida (feat. Georgina) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3077b55193b33b1e2e819b80e4bacef80a9186e7b29d80a434ce526e3c012138. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5152000096.
6 de septiembre (feat. Andrés Suárez) - Acústico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66c4ee5bb5af2408bc89a23ac2fff9f8e6f34321f5ec01d291e61b5e7ed2fa9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5152000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8c158d07a771af0f1f067aa8bb093fe6c871bfcfe4021d5e5022f8e52ac1a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5151901565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319489b7cccfe97debc7a107fb379085143b8b95c57b04dd97907ced28587cc2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5152000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33055be5efd824df2008cf45ab7b1b9d304218450df525c613184481021e2086. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152000074.
Perdido en Madrid (feat. Sofia Ellar) - Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec59effb8900daf3781b7c353a6dc1c8101647b3267086288b30efaa90ad68e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151901649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84062c0ecb7ecb5a8dc6512a4cff64b0f45f280722b95ab896ef0ba1c448a841. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa512e1f38a33d6dbfbe6fd0f100b9fe62a0ddf63def1b3de4998a94262fb2a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152000109.
No te pido que vuelvas (feat. Marta Soto) - Acústica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2475c6462254f41e98814ae64fcd4cb627e3e1aba12b5822162ead8cf7c9eb25. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ES5151901609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a8c158d07a771af0f1f067aa8bb093fe6c871bfcfe4021d5e5022f8e52ac1a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5151901565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c60fd0b42e1b9fdc31a8964c64d5c42d359ac8c1f95433f7cfd1e0cd830b1f3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES5151900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de22e1e8b5168a4dec13ab4fdd67f6c225fd53fdd3fde99978beba0b19436df. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152000217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde282976112306b06332196db7832f7660d2af771742df8b3db2f1f399c025e6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5152000359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727700782d5232b221ef2cec3e268acb36a92e197e25db0efe096b6beab98f69. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5701901649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36245f42bd7bdc1f299cbe64953aadc52870da1001e3b186eec5423df9ac2de7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17187548fedc33096313bffc52b28d804d00728addffde39afc9661adcd4036. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5151901338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18791b429435813f5776ce311df3999d1dad6d9fb0aa91ede9dc51ac260f37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ES5151901115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347d75b4ad4cb9e1063ecac9c69dd398a3ffd91f0c864085890915521c42b7f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM91827984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240e047ebecfd361e3448c9d0aec3a9c7daab4f8a5aa4f45ac48502ffc324f04. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM81832893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97672b6b3c1480a7e8de5310709d9fa3622646d99540e1e4b2d1dd576d0d7c81. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM21803498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a7eae01f772dd192f6b46985d51fa793e6f527610fac07e4a7957707d6c0a8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5152000538.
Celebra a tu ritmo (feat. Nil Moliner, Sinsinati, Bely Basarte, Girl&thepiano)
Navidad, brilla la ciudad (feat. Sinsinati)