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 0x8ae14485dfb69e3be637fc7639e7c0021bb1bc0266910b38dcf4178aef107fa8. 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/5ce3ffe1-9463-4b08-9539-92429c505ae8.json and https://artists.proofprofile.net/proofs/artist/5ce3ffe1-9463-4b08-9539-92429c505ae8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Zeta Mix 18: Me Bebí Tu Recuerdo (Ranchera)
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 0x3d2c051d992c8e376c41d753eb076c4608fa001fb5e91329181214a4f5e3b275. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GTA010900833 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048c0b34bf8a18abaaf6fdef37471443baacda422c50579a1b7d06464e743b73. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/GTA011100668 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a379756241262eddecf4d57fdee16aff6294681ca09fe43c344cc0caee3483. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011100686 — a six-check JSON result.
Qué Bonito, Qué Bonito. Música de Guatemala para los Latinos
3 de los 3 Grandes: Santa Cruz Comitancillo / El Valle de la Ermita / Costa Sur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c97d900189c62f1a084e2f916cf7a30c35f7435a995eae24bd3ff7acdea25e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GTA011300278 — a six-check JSON result.
Zetamix #21: La Mancornadora / Cartas Marcadas / Se Me Hizo Fácil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ae93c74aad6367b73763e4ff390bb20e213d13458547dfaf804775c16bff88. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/GTA011300283 — a six-check JSON result.
Muñequita Linda. Música de Guatemala para los Latinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed44a74954d63143254eaa555a53131065d98d8329312ebad89ed8016872fac5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GTA011400140 — a six-check JSON result.
Franqueza Cumbiambera # 2: Misión Imposible / Vuela, Vuela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991165754bb0dcaf1c0ef01eb8b2d117f9d8c4a19695134e5b6e99cc80cccce8. 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/GTA011400146 — a six-check JSON result.
Mix del Recuerdo: Nunca Más Podré Olvidarte / Los Hombres No Deben Llorar / Luto en Mi Alma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b56ee08127448c1ec87b8338094886101b29fa46a68008e84f1f97d409d35b8. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011400154 — a six-check JSON result.
Pequeño Niño. Música de Guatemala para los Latinos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f17d33dcf52592af7a811fa2037771fb56eec343d443614a2ceb3c717b4046. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011401244 — a six-check JSON result.
Rico Ricooo. Música de Guatemala para los Latinos
Zeta Mix 25: Albur de Amor / Anoche Estuve Llorando / Qué Manera de Perder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64be542b118bcc8bff0c56e41cedbbcba76a1efea5fa1276da350fe5a5eed810. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011600525 — a six-check JSON result.
Zeta Mix 26: Las Gaviotas / Dos Gotas de Agua / Y por Esa Calle Vive / Que Te Ha Dado Esa Mujer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770183598cd9d73ff9547f237a66d10e6c117f318f88e138165bff894fd3503c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011900023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ace166250605806795bfffae5bb07b2314ba71a050eaa405573761967e1e01. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/GTA011900028 — a six-check JSON result.
Mix Quebraditas Francos: Suena una Guitarra / Un Rayo de Sol / El Sol Nace para Todos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd964d335791ae7eea83a8df7720ebba3cea34cf78d131c13fd2a092b76027098. 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/GTA011900029 — a six-check JSON result.
Mix Terricolas: Dos Cosas / Vamos a Platicar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf57182adc446e80b6cdedda911ae1396f77b5359aee57d758629fe2743aa51e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011900032 — a six-check JSON result.
Mix Quebraditas del Ayer: Speedy Gonzales / Jamaica Ska / Tomas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9017891cd6c4bc910f082f7ae7fa68fca792fb3697e6108d7aaa0d734e2387d. 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/GTA011900045 — a six-check JSON result.
Zeta Mix 27: Paloma Querida / Echame a Mi la Culpa / La Media Vuelta / Amor de los Dos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb3cbfd1dbc58f4b82fa873b8d7e80fc90c90aea248d040357897d3f871195d. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GTA011900073 — a six-check JSON result.
Mix Quebraditas 2018: Adios Chico de Mi Barrio / No Rompas Mas Mi Corazon / Chica Alborotada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf5c74b58f1f1e9797bf75ad433214710e2e10eb6522817c90af00842ca0344. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011900079 — a six-check JSON result.
Mix Dinamita 8: El Baile de la Vela / Que Te la Pongo / La Bolita / Las Brujas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92034a174fa67078f1c287a824793cd5b49492112200c8c2350b7ec8b15d7e6a. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GTA011900082 — a six-check JSON result.
Mix Pimpinela: a Esa / Olvidame y Pega la Vuelta / Vivir Sin Ti No Puedo / Hay Amores Que Matan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd182075f06a1512639d5207070f1f894be71de9ee10d4fa4a1842be3c2c89eb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GTA011900090 — a six-check JSON result.
La Fuerza Continua. Música de Guatemala para los Latinos
Mix Napoleonico: Eres / Pajarillo / Celos / Candilejas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe01c97eb3bc55131b99ecd89788da455fe55ab1cf24ed162d4145e0ceec89f. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GTA012000046 — a six-check JSON result.
Mix el Gran Rudy: Por Que Sera / Volvamos a Vivir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29760ae147fd5db74fdb7ce11da15c0784875d79dd4e3e210408ed872c46af1. 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/GTA012000052 — a six-check JSON result.
Homenaje a Mamá: a Mi Madre / a la Sombra de Mi Mamá