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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee405baa4516b70e7a59c349daa18d33353269798eaadb9cf6e3b4a4327db8c2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ae393f60-a5c7-4c84-9e45-c010005d3df2.json and https://artists.proofprofile.net/proofs/artist/ae393f60-a5c7-4c84-9e45-c010005d3df2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La Villana, Acto III: El Perdón - Remastered
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5878184a7f1c0f6ad0311f6b5f30a8097910385654ea5966af985b301ca9048. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271402019.
Los Calabreses, Acto I: Su Silueta Veo Allí....Signorina, Signorina (Serenata) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c80b08518a51aec6e36c417f8d9f61ac859a25709bb32c0b7b7128e91f0b67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271402003.
La Canción del Olvido: Junto al Puente de la Peña (Canción de Leonello) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520907436f44aaed7167a17ac9e2a45a9cc72ec4875eae70475765da5ebe797e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5271402021.
Don Gil de Alcalá: Juntos en Este Jardín (Romanza de Don Gil) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706c78c38ae7953ba4f58e24b93c690b4e590084b76eec2adbf4b3428e82e571. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5271402022.
Molinos de Viento: Capitán, capitán, Todo Duerme... Mis Ojos Al Ver los Tuyos (Serenata) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9abb140a8159901016854f0cec15f0ec27b88f8f0b4636fcf9bde95c09bb1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5271402024.
El Pájaro Azul, Acto I: Cual Ruiseñor Canta En Libertad... (Fado) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324b7c2b4b956331bc7801d4a60c002c15fbc1b85f5fa628ec4183b8a0c3809d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES5271402007.
La Pastorela: Canto a Castilla - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6e67240e2b4e24b716bfb5f8d1f89c3c3e9c45593cd498e627eee1d40582e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES5271402015.
El Cantante Enmascarado: Brindis - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ba2a0ba4ce3284e6bb93f91afd3948fb4784e4beac9bd05f603b2ca4924bdc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES5271402034.
El Canastillo de Fresas, Acto I: En Una Noche de Luna…..Mujer Que Tras Los Encajes (Serenata Española) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7c658208f00a1a4496ec37367b7f2bf51e52da1dc941ab3a4be136e153f9ac. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/ES5271402018.
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
El Cantar del Arriero: Romanza - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3453c859e2ec07542eff27e78ed5e6a4f6fdccfe39b8042e23f061ff7807275d. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES5271402001.
El Cantar del Arriero: Soy Arriero (Salida de Lorenzo) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb777aec2abde726f00af10e26a3b7874983c296c6a4c12d01fd553808c14fb0. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES5271402002.
La Villana: Romanza de la Joyas - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2171865cc2688d456abe37d33fca2295ef9856fca540d0251885e0bbf2daa3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5271402020.
El Dictador, Acto II: Mi Carta Mujer de Mis Amores (Romanza de la Carta, Boris) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686bd3ab3d9f050b93195c63e72c571ff1eff1a6a04197b73727f2dbb9952471. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/ES5271402004.
El Niño Judío, Acto I: Que Me Importa Ser Judío (Coro y Canción de Manacor) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092913b83a1e6a6e8d74f2f7785168f03b3e9a5e57cad038e4a43db4313c27b5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5271402005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b030e12c9ed350e334ee3951feade71aae4a516aaee2a1caab32e2a8997007. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ES5271402023.
El Divo: Soy de Aragón (Pasodoble) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccdc49f8d02ff6fc7bfdc9e2793935cb451c459abf340b50d8b8c06a20802f1. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/ES5271402006.
El Cantante Enmascarado: Raconto - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf931ed4fa7a81decbb7979800ea3e2882a5ab2551c4894da8d86cf046fbf6cc0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5271402025.
La Linda Tapada, Acto II: En la Cárcel de Villa (Canción del Gitano) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cbd8b8c78cda97d425c786fde4b782405442322792a7e5480f87e29e4e834b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5271402008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2bad20a8edbf543a8305e40327a1e47fb91abd4a71426400b991c5e054995b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES5271402009.
La Dolorosa, Acto II: Me Da Mucho Que Pensar el Hermano Rafael - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfea6ed90a40206e5390f543a97ccb3d142696cca78102a5d96b7ff7b9931e2d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES5271402026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3a41fb2cf62d588aa8e8217c43eb42330c5a8b74f6323cea36c28d2b527e55. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES5271402010.
El Huesped del Sevillano, Acto II: Mujer de los Negros Ojos (Romanza de Juan Luís) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606dc28247b548a0417981ac3808600ae636d655d05be9f71b03c98d769898da. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ES5271402027.
Los Gavilanes, Acto I: El Dinero Que Atesoro (Tango Milonga) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a4150774d9a62335b16d5b4504a8cd4ac867f2bbfec7613f00aaf96a49134. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/ES5271402028.
Por una Mujer: Carretera Castellana - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add6da2bd3b651fdcdb99057e79115cfaa5c8f93f72df8c2c1fa3f343ee37a1. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/ES5271402011.
El Huesped del Sevillano, Acto I: Fiel Espada Triunfadora (Canto a la Espada Toledana) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5f55a9bc1bf42f0ed183408054ed61b3d19a41f6ab018341ec196158533ef7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/ES5271402029.
El Guitarrico: Suena Guitarrico Mío....Dila Si la Ves Pasar (Serenata - Jota de Perico ) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9de4c4226f8896b77f2a6be067093961d66d326eaf0b415d0c5899e61c3d4d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ES5271402012.
El Caserío, Acto II: Yo No Sé Que Veo En Ana Mari (Romanza de Joshe Miguel) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c533e600b47cff871758fed1796dbdcb9ab7d433f009b0a1598008bcc592a7f. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/ES5271402013.
La Canción del Olvido: Esta Es la Estancia (Dúo de Rosina y Leonello) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184724315260bb6ad63b4062fdceebbcd40505e6a56d6852dd7fe31c250a2938. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES5271402030.
Alma de Dios: Canta Mendigo Errante, Cantos de Tu Niñez (Canción Húngara, II) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d01cd18c01a98362dda858040948fb7f30670ea915924ddebb0bc549b6e76d5. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ES5271402031.
Romanza Húngara, Acto I: Bellos Prados Que Dejé Al Pasar... Corre, Trota, Vuela (Canción del Potrero) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45fcac4d4704c2d1eb4fdb6e6d02c458adf87bc0080f815b2bc009f5622ebe0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5271402014.
Los Cadetes de la Reina: Es el Pecado Más Horrible… Mariposa Es la Reina Gentil (Septimino) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5d489b5dd948af3c016802ab077a8c95b61dfefc8f1ce08a741352317acd80. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ES5271402032.
Don Gil de Alcalá, Acto II: Venganza, Venganza Quiero (Romanza de Don Diego) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0051d32c503d93718ab7e7527b18ec244aa45a79c094ca519c329facaef4fd. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES5271402033.
Don Gil de Alcalá: El Jerez (Brindis) - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329509fcf0cccac70df29b2761eea14f865fb937bf6efc8051d44fba1b7a3b89. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ES5271402017.