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 0xa662cddbe72d76f527bc4e0ddc0f90afa8323fb7b3809fd3213f813623a63cb9. 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/0057f3cb-2ce1-4095-ae8a-558671276050.json and https://artists.proofprofile.net/proofs/artist/0057f3cb-2ce1-4095-ae8a-558671276050.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Fiesta Pa' Amanecer (El Revoliático / El Pávido Navido / La Roncona)
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 0x8341761295a7a9d00d0214e6b8a04862079fefd616f4546fe384e661a6fd042e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924063 — a six-check JSON result.
Fiesta Inolvidable (El Negro José / El Emigrante Latino / Amargo Y Dulce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128f99be70ae5593582415a2d3b67dfa0b57523672bd9d4cf9fa1a739fcee558. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924064 — a six-check JSON result.
Fiesta Del Siglo (Corazón Querendón / Entre Rejas / El Baile Del Muñeco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5f96fe65fd77d49d7b6cc4a372f6b122b48ad5002123e4ae281c258700896a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924065 — a six-check JSON result.
Fiesta Bacana (Baracunatana / La Bella / La Matica)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929653f778b6bc5aa37c6067f0a6f5db3480c7a4ee2f7102d780b09e727a524f. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924066 — a six-check JSON result.
Fiesta De Siempre (Plegaria Vallenata / El Medallón / La Cantaleta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fa65609f45cd95376202e29ea3c922a72b56d27660f4fba86a6b07b4d3967b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924069 — a six-check JSON result.
Fiesta Fantástica (La Suavecita / Disimula / Por Tenerte)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04785fd3918454a7e2cb8d0b641dd1760ddcbf22782a8ea0e88b3ac6c983af10. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924070 — a six-check JSON result.
Fiesta Latina (Te Lo Juro Yo / La Interesada / Tu Cárcel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4dd28daa1351f8f4675717aaef9c128e7cc9d74231da714a6bdab82207f16a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924071 — a six-check JSON result.
Fiesta de Navidad (Triste Navidad / El Hijo Ausente / Cantares de Navidad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e4978961ffd0fc2497f77173222fc9b4513fd13d0e049c53ef2de70d33bba0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC019924072 — a six-check JSON result.
Fiesta Pa' Enamorar: Quizas Quizas, Las Pilanderas, Sabor De Engaño, Vamonos, Mi Pregon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf821ec255b97aa8e10c267dc38fed2ffbd2d12a15ca164daa0a0b0f7a09b15fe. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024685 — a six-check JSON result.
Fiesta De Fantasia: Agüita E' Coco, Muchacha Triste
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567947b9584fe85990ae91e45b4a1232169d3577f486bb851cab109ad7e1c8ff. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024686 — a six-check JSON result.
Fiesta Caribeña: Carmenza, Cubita La Bella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba3f4add8cf287813a48b7b0e34105fe05cb07a48972fba16a7af73e24f3779. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024687 — a six-check JSON result.
Fiesta Mundial: Brisas Del Valle, Callate Corazon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee12ff9d0fe829d9e4d36bf11ac40572f0dde4751fe4f34d4f926076981992c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024688 — a six-check JSON result.
Fiesta Espectacular: Caminito Serrano, Bailando Con La Dolores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc4d6451e07141e841cf5ae8b5b869ac60c463c262f9a2f5aa889f40b8d0c06. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024689 — a six-check JSON result.
Fiesta Gitana: Baion De Madrid, Baion Chili
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5164a1b2deaedb744d7a320431d40844c676c45ff9793fefa1ecc77c60138a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024690 — a six-check JSON result.
Fiesta Tropical: Cancion India, El Porro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7279c4a4764308314276a2123dd6dd05306173377eea78cc498620105a40acd3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010024691 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953a7110a41a092121637d71d72f206db07930e8f7527be92a2502ae0ec40ea8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010125077 — a six-check JSON result.
Fiesta Del Sentimiento (Pagarás / Tonto Amor / Te Castigo Haciendo Llorar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78270e0a88dfec55f37063699e9c5c63fcaa7c9ab06c8264e8d766a33eb1ba0a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010225433 — a six-check JSON result.
Fiesta Picante (Alicia La Flaca / La Brujita / Ají Picante)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b637df3e852ff74e2eadf06164be7fbafeeab8d3c3c9ae4635610ee4a237e3. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010225434 — a six-check JSON result.
Fiesta Del Pacifico (Mi Buenaventura / La Palma De Chontaduro / La Vamo' A Tumba')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756d5558b911751183b627df37661b193626954d51d37a75d775987b45c40e00. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010225438 — a six-check JSON result.
Fiesta Estudiantil (La Colegiala / Ojitos Hechiceros / Boquita De Caramelo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c53b91164bc31ef7298a713d11691b7d5d685f1523c4a6f540eadb3792d447. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010225439 — a six-check JSON result.
Fiesta De Despedida (Es Tarde Ya / Adiós Al Amor / Idilio Trunco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc32f1626affc125b2d120e127a461070a14fbbcfa4cf19e40fa17f12951246. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010325759 — a six-check JSON result.
Fiesta Para Siempre ( Junto A Tu Corazón / Siempre, Siempre / Mamita Mía)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7452c58a02fdb7f5f1b66692c2a9b34ebfde20d2b552f45f712794c35e5a43. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010325761 — a six-check JSON result.
Fiesta Costeña (No Quiero Envejecer / Lo Más Lindo De La Vida Es La Mujer / Tormentos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5fc4015caf142f8befe688a0b1943b8bdf9cc5b43129980ead59c02806cefa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010325763 — a six-check JSON result.
Fiesta Sureña (La Guaneña / El Trompo Sarandengue / Son Sureño)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c37a8e7356434a040f59469d6cd0bfa4892d01da0e58e1caf8e10a43c521800. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010325765 — a six-check JSON result.
Fiesta De Rodadita (El Sanguanero / El Barcino / San Pedro En El Espinal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8861a892c1f922c1783658e6ce3d6613dc46d1c9773583bc5effc92cdd08faa2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010325766 — a six-check JSON result.
Fiesta Del Recuerdo (La Bocina / El Escorpión / El Vendaval)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dcb7ccf09b3e6a7ccbb24b73adbf7784441f307103dfa5fee1ac36dc835921. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010225432 — a six-check JSON result.
Fiesta P'Al Bailador (Fiestón / Cualquiera Va / Mi Cuña)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d40ce2bc7610431091b28adbe8b9587cce021247a233434dc5c485edbf15a3a. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010425947 — a six-check JSON result.
Fiesta De Colombia (Momposina / El Vaquero / El Mochilón)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2766be3066e07d7511871fb86271eab99b23f0682078ac693691ef05ca68c7. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010425948 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ef3ed9815a3d6fc4cb673fb42174c5989406c7aefe46a565b136cd10d8fafa. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010425950 — a six-check JSON result.
Fiesta Del Perdón (Pobre Soy / Perdóname / Corazón Dispuesto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b75184f24a0d9a671b183ac3467a2b73003ca36c6ba8391b07af956dd519526. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC010425956 — a six-check JSON result.
De Fiesta Con Jorge Grajales (En Aquellos Años, Quiero Ser Feliz, Ingrata)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd422c08656a5b592b67bb5ee21b2fe7de73a109a6154e7f924ba053c7e5adaf0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012338718 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820fdfa75d72220520a91761a93cdab7c0d8d0bfe6a3ff1bd22d0bce9c040f68. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/COC012338722 — a six-check JSON result.