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 0xcdea35e43b06befd4bb457131b4d72b40d1ed7a7127a66db2e0392d7ff5702f4. 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/58a8d77d-6456-4129-ba77-f686b58ee2ad.json and https://artists.proofprofile.net/proofs/artist/58a8d77d-6456-4129-ba77-f686b58ee2ad.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Popurri Nativo No.7:Cumbia Lacandona/Cumbia del Mar/Cumbia Buena/La Zorra
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 0xc1b9f9c2e936a896305d2bafb97544182e467f444d7e72d7b96fb632cbfd7e82. 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/QZMZ92496749.
Popurrí Nativo No. 3: Fiesta / Tikita / Mamaguey / Pobre Ramón / La Bamba / La Negra Tomasa / Fiesta / Esa Negra / Fin de Fiesta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b021c95d880b5d871532fb4e0e71384fa837eb13429fc4baf418ee2328eb44. 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/QZTPX2491725.
Navideño 2024: Un Poco de Amor y Paz /El Año Viejo
Poppurrí Nativo No.1: Sueño Contigo / Ojitos Mentirosos / Huayayay / Llorando Se Fué / Colegiala / Linda Muchachita / Aquí Está Su Taquero / Chico Vacilón
Par De Anillos (El Legado De Fito Martínez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29299eeb4350b7f0012121c1a82f90a7547ff9ab1421892c40ec6c5673932fcc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW9K2455530.
Quieres Ser Mi Amante (El Legado de Fito)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396df0a1c6dec6ec858405400daf22d9e60099aa16b392848aa0a4e90635cb6b. 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/QZW9K2455528.
Medley Romántico: Sé Que Sufrirás / Que Dios Te Ayude / Por Qué Será / Con el Corazón en la Mano / Puede Ser
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a1670e4d6d0ff68a8e64c78255625274c5f922a87486a1dabe1ea3d04dbc9. 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/US7VG2512257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2555ebcb42f5796a99426a7480aa7380f0d11ea115bccfb21306bb3b1ba8f18. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZW9K2455525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e168c9a8b481ef15b77312ff1104aca91a3e2ccdfbd749de89fb394231a4c87. 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/US7VG2512319.
Si He Nacido para Amarte (El Legado de Fito Martínez)
Cuando Llegaste Tú (El Legado de Fito Martínez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fc702ca7c06519d831d6584d8590a5fc05142476f0039de390bdf39b487897. 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/QZW9K2455532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ded9f607b29c14215a25d9ec291b260352616b3eddaf374c9d30dc921125cc. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZW9K2484232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5439a9e47ea1a81a1752e1bc1bd8171ed54c050cb56dcc11873c3c9ac085b4bd. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZMZ92496745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e196bf9dbe8b02ec66a66b193ab23f94db6653c91d67d232d4c32799779e5c. 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/QZNJZ2465658.
Sorbito de Shampagne (El Legado de Fito Martínez)
Canto Veracruzano (El Legado de Fito Martínez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e64c772ad56eef227911e30f54efcb673e9cf837512ee4e726e519f42a69f8d. 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/QZNJZ2544695.
50 Años del Legado de Fito Martínez Vol. I
Par de Anillos (El Legado de Fito Martínez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5178bea76590616f3562b571bd7616537d2cb3d70bfbc959ac53a6f3e4fe52d8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZTPX2515168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4360fb2a2dba815c68fb649ace8abbc4db495da9c1361dc0b3532c75b3d2ab. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZTPX2515170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f698d7994ec9f3cd05107e2b420eb55f3ad7c2c144514557eaeee1454bbd121. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTPX2515169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3b295d8c5272c0d235fd380842f4b0fe68aee3d16f2c6013fb8e9dcf3a9fb6. 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/QZTPX2515171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19301345d42dfc723efca6366f04622ac37173a7a4abc9854873b6e08447167b. 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/QZTPX2515175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde83b1729680b5c9d2db6547c1e3920e12e3594a81b589579306bb10ea087c8a. 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/QZTPX2515177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4467d323caadddb4930091379c07df03f993d7850c133ce8370073e330c4d6f3. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZTPX2515178.
Los Reyes de la Cumbia Con Nativo de Fito Martínez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f8169e7f5eef5a0d8c35ebf32a9070c1f25e3920cf20202d09a0ca66b837cb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZNJY2593874.
La del Tacón Dorado (El Legado de Fito Martínez)