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 0x0da61924b1fc16e442dc6dd9cdbfedfc936cd7cf80c6f456a73a820b98320f75. 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/4239c469-479c-4e13-8b35-994494f5c768.json and https://artists.proofprofile.net/proofs/artist/4239c469-479c-4e13-8b35-994494f5c768.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 0x102926462d64addcf915731e74de9724c86954e2b3c9bad8b076c845c7ca40f8. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZNWX2070537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7aa93c087820a3f60942c5a724eefe14d73712d6693ca128c7ee354efa1128. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QZNWX2070539.
Tercer producción en Vivo - Al Mismo Nivel (En vivo)
Popurrí (Reproches al Viento / Con Cartitas / La Puerta Negra) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e28410046532c988eda89992fdd13c366fb954713cc3cef70f10fe965005f16. 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/QZPLR2046248.
Puras Rancheras (Abrazado de un poste / Y por esa calle vive / Ayer la vi por la calle) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56292c88a80d3e7d897cca281f193b5c9ceb1a72439ce05712535467eb04c8c. 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/QZPLR2046249.
Popurrí Para Recordar A Los Que Se Nos Adelantaron - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64b20e17c9198c585fd391565aa2481413a75bc96382807242637bb6636d8b9. 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/QZPLR2046250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab925846f373824837d3139327c6e3b939acdb20de114484bf39d8d4d2b5f386. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZPLR2046251.
Popurri (4 Milpas 30 Cartas Mi Ranchito) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455a2bba74cae438797f50d4391b79b70f64ac4105df886bc75ca889a7ae9290. 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/QZFZ32115912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b4bfe2f8e6842c168a10d61c2bf3aeb8d1cdb985985e8e18507c86e12be053. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/QZFZ72166582.
Lagrimas Del Corazón / Solo Dejé Yo A Mi Padre - Popurrí
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31631383d593c7882b72eafbc534b79275b333c752fb7424cb3733590ecf678. 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/QZK6H2183863.
Popurrì de Marco Antonio Solis (EL BUKI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac5e15e490fe860b82ca50f0b18a4c3d715b315ec2103529fdac4b6e27367aa. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZFZ22203623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59272a3670db93988607bc9ee87eb331b5dc30cdcc2d1140d01d3e7179629029. 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/QZFZ32226773.
Popurrí - Arboles de la Barranca / La Manuelita /Tu Nuevo Cariñito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29215fef73efb48d10135d7ead99348890b73fdbb30d71d391d2b8cc84116909. 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/QZFZ32226775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db369e267cc1a3ae430f22674ac3bb87c1f4ae45a0d41b2b2f860defb1e877c. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFZ32226776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9257151eb7a01f42ca14d20b688ef93556fa0d04de7adadd50799408bc66bc3d. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZK6P2268787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461ab27a0c3df04378e49bf89bab091bdb88e86cbe9eeec80b748396793c246f. 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/QZK6P2268788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce127f4ed1455c764c42e9a391f85aee6c455a8a39f6e4bec23692a5c970994. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:38Z), 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/QZK6P2268789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4b5eb1a3e83bab083733bf7d80c55c871dddfcf166ce11f7a2cb67f4a2c48f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZK6P2268792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1d2ddccc714a290e6d0fe8844da40d6530c9ab7af305c58d9bff4e067c5bbb. Chain 2 (Bitcoin): anchored in block 957561 (2026-07-11T11:41:29Z), 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/QZK6P2268793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a0164da309cc0e1c9538e3efa54723955a7d1ae8b13ff68b16435294640079. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:44Z), 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/QZK6P2268794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7925434d62b0dba9764c0b82756248593f18113faf301fb3a86378ed89b0af8c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:56:49Z), 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/QZTAU2295466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5fb87be487bdd6ff900bbdaca1ccf8987e53731623f10173cbde56cc2fa6ab. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWS2373133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df23c1d9ebd8c7885966e788c2c0e3ba1258f48d0bd0915faeda6a5ef274d09. 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/QZNWS2373135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066ca92aedd3feb4725ed6cbd9c902c1fd6918a05feceda8dbf15d4df3b00593. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZNWS2373139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c412269518caaab123f08817d2ff3d2a96b1db83aaf8e6d79e16020b8b54b2d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWS2372173.
Popurrí: En Las Cantinas - La Novia Del Pajarillo - Suspiros
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2af23987058a9ba09c7464c633808a3c567c5ed77ac3176b140790fa4268412. 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/QZFYZ2416639.
Delante de mi (Popurri En Vivo) [En vivo]
Delante de mi (Popurri En Vivo) - En vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d246ca24e02d6cdad4b40ca547d79f22a0cf4e67e9b19eb7a3cc2c306ebf4ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6P2410212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf429a51d74cf0766500857d31196269b1f9f2b5e4ad0c01c3b77f23966a59c5b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTBE2492531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3831c6884e9fa67ab43441379ed10cb60d4ab9b039d1b77d7f40166487f0eb55. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBE2492534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325b5bc402f3208c87790f894dd922580513cd94c6982bb09fe1c7169a9c7dc1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:17:53Z), 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/QZTBE2492536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f79a29ab0f797db700314e3915b6056306c71fa501bee1377ff84f7a03a8f. 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/QZES82525774.
Popurri El Navegante, La Mesa del Rincon, Carta Abierta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc81a73c3c00eaee03af07ffe6eb2494baa5a0426dd348c982188fb3c16d8f46. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZK6J2509486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffad1ffb391158dcd9928c31b198faa3275d4f164ca23e41debfe712f6c7e39. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:26Z), 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/QZK6J2509487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eefabc91b312c8d77835c370d6f65174744c48b9c551bdd895623117e89c897. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZK6J2509488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437b07653bcfade9f0bb53e880261e9a3f4e3f3dcea43845b50b72e7fbf66216. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/QZTAU2558505.
Los Viejitos (Popurri de sones (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64bc69cb646657f7dd4e8166e75417bad26939018e2dc9d33809ef3c375c765. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAU2558506.
Ahora Te Puedes Marchar / No Podras / Si No Es Ahora (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b0011d61ba190a9afbc014fca73fec5f74aad92ef5cebbf8e32c2c3bc79f9d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:06Z), 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/QZTAU2558507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533541fb9c7d119e75a116efe717b0618340faed6e5ccc8777c2d37dca9637a1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAU2558508.