thumb| Antonio Fernández Díaz (3 August 1932 – 13 November 2025), known as Fosforito, was a Spanish flamenco singer and winner of the fifth of flamenco singing. Only five of these have been awarded s
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 0x166ef59da5ab11782c2fa25b7e9f171fad3f473bb8534d7327c28818eaddf445. 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/b9c0c975-e3ee-4c28-82e9-5594c9d14826.json and https://artists.proofprofile.net/proofs/artist/b9c0c975-e3ee-4c28-82e9-5594c9d14826.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vintage Flamenco Cante Nº2 - EPs Collectors
Vintage Flamenco Cante Nº 55 - EPs Collectors, "El Café De El Burrero"
Toita el Agua del Mar / Que Nadie Se Llame a Engaño
Vintage Flamenco Cante Nº1 - EPs Collectors
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 0x90c55003810594b30d9bea6d36e351b78fa4051d194f8ab4d5bc579f0f05137b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES5299100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d261df37fbae3384a00a0982c626919210bd9455ab502d7d0bb3c5f63585eb. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ES7580500932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0fa6dc8e50b8be5213734b6e616c71e165e829184840976b255e7c9ad2e113. 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/ES7580700119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd520b90d568a5579f5e33ce086c9acbfc388e3eb9155686d9ee657ac1f033f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7580500899.
Plazuela Del Mentidero - Bulerías de Cádiz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f42623092e966be8dd2ec20716f225a99dafc4442864500c86d94d5654daf7. 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/ES7580700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a20d416a022f43896ac44db5e125c83d15e99a7e0bb15b21edfb5ea81bc122. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES7580700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54395d2b33b3591cb4cfe9102cf3c8ff1ccd596c12acfb7069429b64d641f23. 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/ES7580700236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6101ad4d2fad53bf1a4309bd937a5ccedcb03a0ee6cb58073f7c5ed509825c77. 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/ES7580700237.
Solo Por Verte Bailar - Malagueña del Canario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7570bec2a980b4c6093978ee744bc0f72667964be05075a4a008ba9076ef16. 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/ES7580500892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f9fde4eec2b2d7ae40b1e9556f96c4bb9fc807eddb4d62b3ec9b47da6f2a4b. 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/ES7580500897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55f924145a49e9a36c642081095a4492e1facf802a2f75aa2c478d5b5125bbe. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7580700238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b077872133f43b76141e65b9c5df07226aeb47807259c4c0d1ea5af0f1b17f5. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ES7580500894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d01e9d543a7f9a02868e45e397147054adc060fe2c56af7de5994001b760aa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES7580700239.
A Pesar De Tu Maldad - Peteneras de Medina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x936e83dc09a947d004bf9418822be75131f834040b374fa5cd7831b2412fc538. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ES7580500893.
Por Dios Que Yo No Te Miento - Soleá de Cádiz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681dbc493abd91e58ac6f6295017ccc2df5841ad9dad756415f449e6f6e02ebd. 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/ES7580500896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8c9b0a9dcf2c597f7f1bae2857b759e0666c557a717bcdda68db4fdea5892a. 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/ES7580700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c55003810594b30d9bea6d36e351b78fa4051d194f8ab4d5bc579f0f05137b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ES5299100012.
Grandes Figuras del Cante Flamenco : Fosforito
50 Años de Flamenco, Vol. 1: 1940-1990 (2ª Epoca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a6d02852bcf1f6a5efd197244c32662b4178e3b916d541e4b5f7ec458dd93d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7580500891.
Selección Antologica del Cante Flamenco, Vol. 3
A Nadie Cuentes Tus Penas (Tangos Flamencos de Cádiz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ea06aec16c4c4e077f1d69218f7e7a9f1a6cf3732b360a86f94ebfdeb5b368. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ES5681402930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b450132f35ba58bd0e9cc5bbfb53f6f8ad2e33c691f4113c0c7802efb5bf66. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5270800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac96c2af17a34052cdac2aad04a4599eaa8626d5e5871cf31f1295945059cba. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ES5270800211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fbc27693f1a4ff2f099b187223a9e5b5f63a4664f09406b14db9387896dc76. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5701200627.
Selección Antológica del Cante Flamenco, Vol.2 : Fosforito (feat. Paco De Lucia)
Selección Antologica del Cante Flamenco, Vol. 3 (feat. Paco de Lucia)
Tierra Donde Yo He Nacio - Zángano de Puente Genil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0707dc0a01df8d23fe0ca865e1646233072fa260871100d99c7535c1273eef37. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ES7581300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001b2e6c5dbd86b30b79b96b03035d183364115ee7ed2471398c736129290f75. 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/ES7581300470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8c9b0a9dcf2c597f7f1bae2857b759e0666c557a717bcdda68db4fdea5892a. 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/ES7580700240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dce819d5d684fd85c8604447ff342c1fd9ec836dcbd2ac3dcd11b63d1ca099. 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/ES7581300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fba8cb79562609ce98e77a3487f960a0ec9c8258dc1f85680ce5976582993c. 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/ES7580500890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0988be5b489a0d1390ebfed2fe7a36a4919b3cbaf663b0b0bc5eec5dc1c10f52. 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/ES7580500889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6101ad4d2fad53bf1a4309bd937a5ccedcb03a0ee6cb58073f7c5ed509825c77. 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/ES7580700237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b077872133f43b76141e65b9c5df07226aeb47807259c4c0d1ea5af0f1b17f5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES7580500894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55f924145a49e9a36c642081095a4492e1facf802a2f75aa2c478d5b5125bbe. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7580700238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c48007ba5c9e60a7e3b88d384d80dfc35c6d5459b383ec78f20c470be76b26. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ES7581300472.
Antología del Flamenco: Fosforito y Antonio Mairena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3ac57b0be94c0978a4a7b39f7dcd5eda381d9d812973469a92cede02474d0d. 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/ES5709903310.