thumb|180px|Emilio Arrieta Juan Pascual Antonio Arrieta Corera (20 October 1821 – 11 February 1894), also known as Emilio Arrieta, was a Spanish composer. Arrieta was born in Puente la Reina, Navarre
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 0x880a68a0b8e690a697b1fbacf36fbf3d63222e811e6f852d5471a424d666e433. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8117b339-8a75-46f4-ab6a-2be718e74853.json and https://artists.proofprofile.net/proofs/artist/8117b339-8a75-46f4-ab6a-2be718e74853.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Italian Operatic Overtures, Vol. 2: The Early 19th Century
Miguel Fleta: Obra Completa, Vol. 4 (1928/30)
Marina "Por dios tu pena cese, Dúo final" - 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 0x3e67728bc23660ead1872aa6669c69cd10bfe4252288ff402932e05b1b170104. 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/ES5279801701.
Marina "Seca Tus Lágrimas, Cuarteto I Parte" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af7197da4583e6613cc79797f8f8286d288466e5394ee53f98ad9b69bf243fb. 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/ES5279801702.
Marina "Serena Tu Rostro, Cuarteto II Parte" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0575a2999b006c3ce1b9ce340dc81fc0acb8ebf6f9652e2b461b7758aef2ba04. 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/ES5279801703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa7203a9c9f506b99bb3b72388e8fd1a4154bcc6b1ae57b94095c382dfab665. 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/ES5279801704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61e7a719e6048d0413276c6ab85d47d53c826b9a347410eeb48600a2553c1e7. 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/ES5279801706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f4c01adddfee74494aa31064bf24379f56d05eba7bd87aa161c93bf60162e. 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/ES5279801707.
Himno a la Exposición de Sevilla - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9ca3095b4dd4a6ec68a10f8f126314af5605fdda88a840d66e7bb52d1445d0. 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/ES5279801711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfa33feef50f912c82caad7a17df989fda29ba485ff8e0f863c3b0ac62fc74f. 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/ES5279801712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f2a8f96b0bac00158df24c9ec107bb084fcf17ab11e2c729742f9b3b2a4f94. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5279801714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7e47a405111dd9059cf1706c0381ea977b543a0080981c85c5089cd0483ea7. 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/ES5279801715.
El Trust de los Tenerios "Te Quiero Morena" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f678cb615c91219b0afef1239c49352c5c8479df768f4e5e0b9b523787cbe2c. 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/ES5279801716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ea44dfba393979088fa3a3453c6b82b54c2c0f13bc115474588c9268ad3622. 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/ES5279801719.
La Dolores "Henchido de Amor Santo" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5cef2382830d7e3590d8b37e10d0011ad0720a543a38fe80fc758ec130e42. 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/ES5279801721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb72eab44844596899e514cf6fedd3a1c790fc12826ba70e2312cf3885aa4698. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ES5279801705.
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 0x8fc521aa52a1f53e624e8fefd7ca0d5b09f45dd9fd16585bb81b0b2392dfc668. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5026900096.
La Dolores: Aragon la Mas Famosa: "Jota"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94933ef8ac6ea9962670dd73247350759cdba39a5826787bd88ae7dbae1f5e61. 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/ES5026900091.
Luisa Fernanda: Mazurca de las Sombrillas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900aed3a2297483f3f69dda1104ed2dc863863fc6ec439cc2d7ce5d82882c05c. 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/ES5025600007.
La del Soto del Parral: Ronda de Enamorados: "Duo de Aurora y German"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342d870d8637506bb05f2b4fd8a29ee0b0803e8d682a9e5684c62c6c53fc4966. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ES5026900198.
La Pícara Molinera: "Romanza" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0f81b41de8e28a4c34f3932ea9bcdef75f28ccbffb944481b994507d684276. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5271401513.
La Alegría de la Huerta: "Las beatas de la Fuensantica" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f717630c7b1e773e8a653aa70207b487240474650c93f0308a9a39374bd53a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5271401502.
Doña Francisquita: "Dúo de Fernando y Aurora la Beltrana" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda85ffb48bc3d2d021e93b98927290b5408097d3ea353bd7d93c61dc41592f09. 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/ES5271401503.
La Gran Vía: "Calles y plazas de Madrid" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc4ca5853053f494ebfbeee0bc63e6185ca6256035e6260eafb5c6fe3ddc631. 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/ES5271401515.
El Niño Judío: "Canción española" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca442d5fa46ab924d11b6bc6af4dc9b6919b14cdcfd87984b1a370342270a5f. 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/ES5271401516.
La Tempranica: "La Tarántula" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4a8b8b2a4d772b41a794e2ded64bde421062f9ebf83400f9882688c18f8933. 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/ES5271401517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ae3fecd03d2da31004e64bec0705f3f8520d17fd06338c97e011aef8cadeda. 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/ES5271401506.
La Verbena de la Paloma: "Dúo de Julián y la Sra. Rita" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafee3658ff6df097c18ddb081ef1700c38f0f5fb0db27b235913e559af49522. 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/ES5271401507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a335386183047ce296d18ac5b2689a1848c45060aa92cb00a5e764f779631eb. 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/ES5271401511.
Miguel Fleta: Obra Completa, Vol. 3 (1926/28)
Manon: "Il sogno - O dolce incanto - Chiudo gli occhi"" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf911c09af5b3117eb8b3fd20689b9247fe441d25115d7ad17e1ac291009b2d. 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/ES5279801302.
La Bohème: "Che gelida manina" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8e75a54bd39ca763f04d02d71ce6a2d20c92dc0adc646a432b93df1f26787a. 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/ES5279801303.
El Caserío: "Yo no sé que veo en Ana Mari - Romanza de José Miguel" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1411b0ac1c511d31da603821d1a3a0800f311862fd79b2bca269616120137d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5279801306.
El Husped del Sevillano: "Mujer de los Ojos Negros" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20c21f669938f45d4845b6e57f37946efb6fbebb3da550ad4cd15dd539480e2. 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/ES5279801308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080b3d88745aa43c9accbfe145c0e87a9c59a11f8d0f28967470bb7bd43a7f32. 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/ES5279801314.
Marina: "No sabes tú que yo tenía - Terceto, Pt. 1" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb50b5215214ec8e2b36c669c5b58daaa88ff32e071c037920fa6c6dbafb287. 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/ES5279801319.
Marina: "Tú Que lo Sabes - En las Alas del Deseo - Terceto, Pt. 2" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e525060f2c8144ceb642e4d6f1fbf7465da5093fe99eed3ce1a31f6ede977d4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5279801320.
Marina: "Costas de Levante - Salida de Jorge, Pt. 1" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfb39b483b45fb0ba70c7fb37a09a0170881d82adeaa2666fa89eeacef48bbf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ES5279801311.
Marina: "Pascual, Amigos Míos - Salida de Jorge, Pt. 2" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5d65cf0f6955c9fc6a248f4f3b5b6b3b498243cb4c22031580dd644b01285a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ES5279801315.
Marina: "Se Fue la Ingrata - Feliz Morada (Dúo)" - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f970dcfc0e6585eb010868750ea57204b7e04b5f4775d9d2b15d0a15621a6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ES5279801317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f750243a66a0ec4bed9ebf9bbbf0189053abbe90dd19da37397f70bceabc4b. 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/ES5279801318.
Arrieta, P.E.: Conquista De Granada (La) [Opera]
El Barberillo de Lavapies: "Preludio Instrumental"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fc3a6b6080b562f53eb649d1b1afb879d16526a9fc2dbea48c27f6363d55b8. 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/ES5029400811.
La Verbena de la Paloma: Donde Vas Con Mantón de Manila
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e625086a90e98c7dd964c2cc8bdc2953597ac0d07d256a1c35a9343cdc50762. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5028900191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796648d7d2feaf28be138b510ca4c988b9384df86ba8aeaac461181e78e9664a. 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/ES5027100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe892ade1587aff1545f0fe59609eb49302fdfac89f7e5566f3bf61f9e9b22106. 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/ES5027200259.
El Dúo de la Africana: "Coro De La Murmuración"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaa49875563b66583bd2888c69b7203b6b4de44244a5a76d995f46c627c07e2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES5029400813.
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Marina: "Dichoso Aquel Que Tiene la Casa a Flote"
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Great Singers at the Gran Teatro Del Liceo
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Antologia de la Zarzuela - Duos y Romanzas
La Corte del Faraón: "Canción Babilónica"
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Lebendige Vergangenheit - Miguel Fleta (Vol.2)
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Música Española para Flauta del Siglo XIX
Rare Recordings of Great Tenors (1902-1930)