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 0xc48f582862cbe378e33a8dcd38bdcd55412718cf50be99dddf870cddf60ec006. 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/d53b3801-2ea4-4225-b4fe-bb57870fc873.json and https://artists.proofprofile.net/proofs/artist/d53b3801-2ea4-4225-b4fe-bb57870fc873.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xb74d10fae2ae1817b7aec69c74e449df0e6db4d5d50fad55b857a2e204d1d5e1. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJX2131278 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca3a3c5b6ced9dbb0dc9ee699d25ad88e8e6d0e01a5c7cbd7f09c206b604d36. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2207780 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4421e4c3fe9ce6e533a5387955821760b494de7dee3a6235e561d8a663973b. 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/QZHZ62224905 — a six-check JSON result.
Tributo Costeño No. 1: La Morena, el Nene, la Revolcada, el Zanate, Dame un Pasito
Popurrí de Costa a Costa: Tu Mal Proceder, Soledad, Mi Amigo, Mejor Que Sea para Ti
La Niña del Teléfono, Ojitos Negros, Morenita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd6f98db2f39fc17ff9244ba936ac34704ed40f9875713cf12b3a1546b4b987. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZ5AB2359409 — a six-check JSON result.
Popurrí Burro Loco: Arrincónamela, los Diablos, el Burro Loco
Popurrí Sonidero Costeño: Tus Jefes No Me Quieren, 17 Años, Que Te Vaya Bien (en Vivo)
Popurrí Romántico: Dame un Beso y Dime Adiós, Volveré
Popurrí Michoacán: Arriba Pichátaro, Juan Colorao
La Yaquesita / El Cuararé / La Hierbabuena
Con la Botella en la Cabeza / El Nene / La Revolcada
El Son de Mochitlán, los Chinelos, Son de la María, el Torito, El - en Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21897b336f86d48ab30b243d3b8d2555d8188038ffae78454b6b2dbb69511795. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZTRX2393023 — a six-check JSON result.
Micaela, Camarón Pelao, La Chona (En Vivo)
Con la Botella En La Cabeza, El nene, La revolcada
Tus jefes No Me Quieren, 17 Años, Que Te Vaya Bien (En vivo)
Popurrí Morenita: La Niña del Teléfono, Yo Vendo Unos Ojos Negros, Morenita
Popurrí Costeño: Dame un Pasito, Con la Botella en la Cabeza, el Nene, la Revolcada
Cumbias Sonideras: Tus Jefes No Me Quieren, 17 Años, Que Te Vaya Bien
La Paisana / El Campanero / Cumbia Cienaguera / La Campanera
La paisana / El campanero / Cumbia Cienaguera / La Campanera
Con la Botella en la Cabeza / El Nene /La Revolcada
Aniceto Molina / Yo Solo Bailo / El Campanero / Cumbia Cienaguera / La Negra Campanera
Tributo Costeño No 1: Con la Botella en la Cabeza / El Nene / La Revolcada
El Especial / El Ayudante / El Centenario
La Boda del Cuitlacoche / Micaela / Arremangala Arrepujala / La Chona
La Hierbabuena / La Iguana / San Marqueña
Mi Enemigo el Amor / Yo Ya No Vuelvo Contigo
La Niña del Teléfono / Yo Vendo Unos Ojos Negros / Morenita
Tributo Costeño: Con la Botella en la Cabeza / El Nene / La Revolcada
Arriba el Chile Frito / Son del Torito / Los Diablos / La Boda del Cuitlacoche
El Cuirricui / El Baile del Tambor / La Negrita del Condesa
Los Tlacololeros / Son de la María / La Malagueña Curreña
La Hierbabuena / El Burro Loco / La Culebritica / El Taka Taka Ta
Quererte Jamás / La Piedrecita / Tu Nuevo Cariñito
Son de la Rabia / La Iguana / Los Apaches
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e678fea66583ef17f852e855947635bd5d6248ae91365766db497541aefc037. 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/QZNJW2410162 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77195cf584aab03f8143df0436985b84a20d2554f8ae7ff59698a360fc6b8d2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJW2410163 — a six-check JSON result.
El Cuirricui / El Baile Del Tambor / La Negrita Del Condesa
Tributo Costeño: Con La Botella En La Cabeza / El Nene / La Revolcada
La Malagueña Curreña / La Boda Del Cuitlacoche / Los Tlacololeros
El Baile Del Tambor / La Negrita Del Condesa
El Centenario / El Ayudante / El Señor De La A
Arriba El Chile Frito / Son Del Toro / Los Diablos
Tributo a Bertín Gómez Jr: Copa Rota / Quisiera Ser Él / De Usted Depende
Quererte Jamás / La Piedresita / Tu Nuevo Cariñito
Con La Botella En La Cabeza / El Nene / La Revolcada / El Zanate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0fabb3bf02c0372a775f58a08f81940dada38e693fcde430028af8089d5c1b. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/QZTPX2402021 — a six-check JSON result.
La Hierbabuena / El Burro Loco / Los Tlacololeros
Con la Botella en la Cabeza / El Nene / La Revolcada / El Zanate / Dame
Rosita / Papel Quemado / Me Voy Pa' Carolina
La San Marqueña / La Boda del Cuitlacoche
La Cuichi / La Iguana / La San Marqueña / Los Tlacololeros
Arriba el Chile Frito / El Toro / Los Diablos
La Niña del Iphone / Yo Vendo Unos Ojos Negros / Morenita
María Teresa / La Vida del Pescador / Arrempujala Arremangala
Azúcar / Juana la Cubana / La Negra Tomasa
Arriba el Chile Frito / El Toro / Los Diablos / El Burro Loco
El Cuararé / El Negro de la Habana / La Hierbabuena
Son de la María / El Baile del Tambor / La Negrita del Condesa
Tributo Azul: Rosita / Papel Quemado / Me Voy Pa' Carolina
Los Tlacololeros / El Rikititiki Triqui Titriki
La Malagueña Curreña / El Sinaloense / Son de Mochitlán
El Centenario / Laurita Garza / Leña de Pirul
Arriba el Chile Frito / El Toro / Flor de Piña
Son de la Rabia / Ilusión 98 / La Culebritica
Tributo Domingo Valdivia: Se Muere / Sincero Amor
Quererte Jamás / La Piedrecita / Tu Nuevo Cariño
Son de la Espada / El Novillo / Despuntando
Los Tlacololeros / Rikititiki Triqui Titriki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0568be3d2fcb1648bb5fb3caa8f11c413d3cd09a692cfef07c14be97d51db20. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2497703 — a six-check JSON result.
Son de la Espada / El Novillo / Despuntado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70174cecca9449c1fce27be97717679dc3f3f6b1bb5464f9680e3c3db52631fa. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9L2497707 — a six-check JSON result.
Son de la Rabia / Ilusion 98 / La Culebritica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3ea0086971d366a769a34cfe9d7b05919d02d3215aed79393427c11d7a7b05. 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/QZW9L2497708 — a six-check JSON result.
Tributo a Bertín Gómez Jr: Copa Rota / Quisiera Ser el / De Usted Depende
El Gavilán Colorado / El Sinaloense / La San Marqueña
La Boda del Cuitlacoche / La Calabaza / Micaela / La Chona
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39568ec79c7aed90432d41910f231b028421958f6fad09c60d364b4fafdc6d1. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZMZ92512339 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd61730602e28fdc7342846243c8f9db368d143c797ba0877706199b12c3b6c2. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS2560832 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb110e9ed6b9a0c3acc7145a8c125e81a0bcc3a75a378e1df45b66d413b9030. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZNJY2504413 — a six-check JSON result.