José Refugio "Cuco" Sánchez Saldaña (3 May 1921 – 5 October 2000) was a Mexican singer, songwriter, guitarist, and actor. Sánchez was one of Mexico's most popular singers and recorded most of his sin
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 0xfd8a087fc0cc8fade86d38159a33fd50d648da35921e48eedc9ddc1fe3502913. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/257a1b43-b5d4-4d98-86c7-4fcaf584c564.json and https://artists.proofprofile.net/proofs/artist/257a1b43-b5d4-4d98-86c7-4fcaf584c564.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 0x964256904abc67bb62c769d83b650dca1b2868e8be75b8d6ff796d57a4256630. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:00:52Z), 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/MXF145100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a591e9c2731926a07d6f7b7a5328d13bba401c825bc821b33efac2c07f19ab5. 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/MXF146100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31d80cd59ce7dcd26ba63cdd3e9acece44b953e9fad62890404b773f2454440. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/MXF146100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227ea0e5562750e56e3d8b896573d5799688d6ef13ae27c597c7d6ee249a8fcd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/MXF145700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00329ff83499c2d3b57fb27d9df4350fb9d7da17348e61aef04ad190eb05666. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/MXF145700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9b112039c2dd4ba264e0261ffc328fbbf351d6c4d0554619e6d2ecc4a65075. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/MXF145400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9dd4149c564981ebf6927372ae4ed6d120839ed8dcfa62c0c01524bb1bf9c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF146100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e8a45034bbc7e02272a96ac2089700563e380daba18cbec2ce5c1b5429e3c3. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEXO52433651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46f2643233e736a70bfd37afb804ec72c8658443384bd193835f32b2f96232f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEXN92265371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f727e3cafdcf0a5e846e52e6e515353b5de7bae612e535c4fc6ca4f503183c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DEXN92265382.
Vintage México Nº 74 - EPs Collectors "Las Canciones De Cuco Sánchez"
Nuestro Gran Amor Con Cuco Sanchez La Voz De México
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0f84efa12256633a93789cef7d2f4b78177c5c90de334959e917e9a5d4f756. 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/MXF146100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680613b4aeeac69bc640f18ffc4767795f608da4590a86b28fbf5afe37503fb0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MXF146100010.
Por Quien Me Dejas/Cuco Sanchez "La Voz de México" con la Guitarra Llorona de Armando Trejo
Cuco Sánchez Canta 10 Exitos De Telenovela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f284863adf18d51d66c155280b11f1b393fef97196814741bc31f5a5786c597. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MXF145600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed50d731fe2c3acd3dcbec75e9f546d03b7de6c5dc27cb388eb62410eb3ff3cc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MXF145400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64654db2004dd1060b941457fd8985f2b0880c2a442ebfe6e1309b02a4f80994. 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/MXF145600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025760c29597e103ae10b89ce09f372afb2e9e1865af9f445409bd886b08d814. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:47Z), 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/MXF146300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e616ec4be37f149706e5b018db3a7402e40c0d8b61b7ecc405d7e7fcd53201. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/MXF146100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8908a1478ccc9c35b5e76a8a0ee195ace439336bfea00e550b1191c8cb984939. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:32:53Z), 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/MXF146300093.
La Gran Colección del 60 Aniversario CBS - Cuco Sánchez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b86659a38626d1bae19731cad3d800ce3ea3c92f6b573bf956dcb20c4eaaf15. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/MXF145600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00329ff83499c2d3b57fb27d9df4350fb9d7da17348e61aef04ad190eb05666. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/MXF145700038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c463c698f8a19dc924f24635208d01501543b8c01068ee2c0e3942e68a9c3a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/MXF146100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fbd5e7b88bf038d8edf75385df012ee760dc01eba13f91835e9a9794a45a2f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MXF146100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c463c698f8a19dc924f24635208d01501543b8c01068ee2c0e3942e68a9c3a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/MXF146100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5dccb68880c070809f6d28161d3bd618e81ade02146999003b29ad990b8fbc. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/MXF147000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b86659a38626d1bae19731cad3d800ce3ea3c92f6b573bf956dcb20c4eaaf15. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:54:58Z), 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/MXF145600033.
Serie de Colección 15 Auténticos Éxitos de Cuco Sánchez, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5d680ac516a86c021aa733cf39416b2b4001dac653bf5ed821d1e1b5faa372. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/MXF146100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37fa3e8b468fd6e1f4a2d6e6982cc838ff0e39f7210c4b44f9b8b579a173f65. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QM7281548673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e57277b15ab140dc54ba4d691747d711317a06c5f2ab9d80295e6a32e30c0. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM7281548675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37fa3e8b468fd6e1f4a2d6e6982cc838ff0e39f7210c4b44f9b8b579a173f65. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM7281548673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763e57277b15ab140dc54ba4d691747d711317a06c5f2ab9d80295e6a32e30c0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QM7281548675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaaeeb6d8107f513bcb99809c17f2a4ddc4187c7a7c0278083af6369cff93b0. 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/QM4TW1538981.
La Cucaracha 1959, Songs of the Mexican Revolution
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8602326df68baca7d4e00deeed8c5d61bc817ddbdd22a6a87610b4949fa16cbf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM6MZ1537668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8755fe821651aec57654c5c6aa5bad282d9df63f5fc96e8754b356b6e87a311. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:00Z), 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/QM6MZ1537670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9cbce26896521efdc11962dee4526b8fd7981023cac32f7ba96f8a2b0aae5a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM6MZ1537674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3411e67675a44db97bc767748660e587519668d2620fe5f049ea85027f250c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM6MZ1537676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37127c812c2bc8217af5858fab40b3802d90e0024b69bd2328861c54810440de. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES5831501379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4583f50bdbce008e821cf7ba2c58ab303951d037aee50968e0af4d3c17f1ff. 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/ES5831501381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf261d3fc6d0329f3d69a7d26e00b66d42954be385036219bb27e601535cd0c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM7281777683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42da81a4ad060e3b56a1bbee8c6212b039cd658b3c19ec9042204e59696924d. 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/QM6P41823096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997a0dc5f8eb3a7d748e11995b2d28bfbdcc6948d1429c1f0850110a5b303fef. 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/USDHM1910821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb244749b50d2233b71aba4b43af7130d1239c95de73a95ec87c88fc418ed2a52. 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/USDHM1910824.
Yo También Soy Mexicano - Boleros de Cuco Sánchez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc720784f556f88e621bafc437c6abb777f3db7d9e87c2d3689d3888b2d882a41. 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/DEL112500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa272aabcb1598c396d0832c76b7724d432bd5faa03e3e84f6260a52a357cc6b2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEL112500381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42af5218f3571b313794f79b2d41dc931fa9316e243ef64821a8dc1a549d645. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEL112500382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2713c76c7bfc557383fae365b15fa38594bbf51874cc26ab83382b2d774b554. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:01:32Z), 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/DEL112500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5b6f00af55da171aa0a07498a0bac327c8ed5610fb2eb565b554b2eb522c69. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEL112500384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5540356280564fb45a26fa77acb165cf72a8a292f0c95ef451bd65c97ac800ee. 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/DEL112500385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a747da30348cc67cd7a1657bfa79b7ff84c136ac2f468299eac311e923996e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEL112500386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbe94f4b9ed3ecd5c51ad862413fa4d9f9cace9be6779e70f284f7ad1a4fce4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEL112500387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac0dc108c0959341b0abb06cf56bd79640f4f11089653253602419815ecbf5f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEL112500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe1d833de9006193364f47c0e165ed04f5452de8fb11ad68fb38c637b722016. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/DEL112500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143eaf8cda35cdd36c8648ecfa81ff12680ff0d1aad99f92033022a53ffd5cde. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:48:46Z), 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/DEL112500390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b275c3ddd159fe226bf5736de84f5db04a12fcd75a828a9308371cdcba59df. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEL112500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155f9cff11110ddbcfbcb22ad572c4ec834b5ba5825b37485068d9d884c1d8c8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEL112500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43f567b69b0727dd0ec44e22386256cd643163d044ea7b8c0f49ec50a559579. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEL112500393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732d4935bae34c2ce1c53a751199c687ff518369dac6f9143849badb77596db8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEL112500394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76a830ada5f6dcc5a719a64be8cb5e9c1c951b4911b745bb644f629c8310c9. 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/DEL112500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e60c56eb38be65c08b4d3759179d2adb9206602baa708034b1d79bf7baa2581. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEL112500396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2c2ec66237a5d1b98dfe796d2612707d7bb947ff6eba4c420033f74467dc9d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEL112500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3646a64a413200d6b4db2096dce4c815b15dd1baa2d063ef9f5ecd414bd937. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEL112500398.
Sol y Bolero - Cuco Sánchez's Summer Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d56c0bdbf5bf8822e4699369fc5ba7787338ed75e6135097cab3a97cf04fc0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/MXF147100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be1d3e5d364caf8cdb18c709da1b8e63c9962a4ae3373076b63b3897d2d84cf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/MXA0N2200281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22276064c3790ae9cd57bef914fc3dcc856081cfe04441e623045a7bd8740a9d. 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/ES5021702502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582cedaac63a3502148da3d3ee337b5856725b6c6789bb9b0be8a8553f336622. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/MXA0N2200285.
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
Las Grandes Canciones Rancheras que Debes Escuchar antes del Fin del Mundo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bfaef70f0634ba24d9165cef7e1daf5d4c18bfd0ed6598b551d99676420480. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/MXF145600070.