Francisco Peña Pérez (born 1 June 1942), known as Paco Peña, is a Spanish flamenco composer and guitarist. He is regarded as one of the world's foremost traditional flamenco players. Biography Born i
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 0x28749d0ef369c6ab497cda48903eb62721d029c6f945ea06dbb504ab16c191d9. 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/8e76e14c-fb92-410f-888d-54aa2f8ac24a.json and https://artists.proofprofile.net/proofs/artist/8e76e14c-fb92-410f-888d-54aa2f8ac24a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Essentials: Classical Guitar, Vol. 1
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 0x28251be476c9893ad2846019fadf393a18f234e1ff5694d01ec878c72566ca97. 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/USB8U1601608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1286545dc9b92edc1067f7d41136723902895ea07053b8bdab74df34f40e6666. 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/GBAJU1401580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cf153ca49fcad2f33c5cd7650e22cf2a4c652dc16f5419c3d66d6da266448b. 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/GBAJU1401582.
Wigmore Hall Live - A Flamenco Guitar Recital
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51609549099cf868bf32bfae923f48f9395ba0b1c921eb40c25a09baf365f3e7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBF077520350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e68ea25a65afc08c1a19c4358e39a56e70cb29e7979d5a704648b9100d46c7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:04:10Z), 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/GBF077711980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e35b7c46fa6a3baece7bed3017d4838b1f585d5b9424bc72a47e54ac84ef2b. 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/GBF077711990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11c57886c2dcb102bd3856e8e273aa79ba2eb9236bff9e10c7e2e322b945572. 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/GBBBA7760115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6010568b8aa5a7dc9a9dd28ae2382138ed59e3eb34ed7dfae90bdddb6bfb6566. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAJU8800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dae5dae4823c3f50163d6741bfa3d8fc5cba8fa0448d0ed294024f4f660b8b. 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/GBAJU8800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84449ed4bc88b488d039911505c65a37578427e3ee3a91b1d8f1ba61fa0c2d6. 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/GBAJU9800210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6010568b8aa5a7dc9a9dd28ae2382138ed59e3eb34ed7dfae90bdddb6bfb6566. 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/GBAJU8800090.
Ramón Montoya & Niño Ricardo: Flamenco Guitar Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183854471dd490a2ff65425b7db35b695317bf4493bb18d4c5ccc5eb1eef83f8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITL661500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44a0d49b5a784d016d31ca775592f71e477883470903227a2c45fae25090368. 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/USSM10207217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90270315e31294c4b1b696210e28705d7e988a933050d4496ac986797bc7e8f3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSM10207212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1901dccce794bcba39a578eb67a57b120059e37fcda26988ab259eac153b4707. 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/USSM11406899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f5e227d09628267595e22db2170ab82a8c1e0eced853c487b780e2a757b112. 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/USSM11500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76c6d8955b81a25d7a2695c3ce1a2dc12dc17f4d73f967f66c6fa10bf351312. 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/USSM10207216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe907c8d3366130806721b6a7f5c83dcbdc84ae637499751dee98c41d0dbd271a. 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/USSM10207218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60052a8b55d0f2235284ab141a74b6d0f390b2225fc6f282fa43ce6e398279a7. 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/USSM10207219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0dfadb891ca7b9272aed4eae14e6c24b516f8cb00fdea10baa5da40174c0b7. 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/USSM11406901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8287303f9b6a87501a0aa536769c535309ef3a6e3b4a7e57e9a93b45c31c20a6. 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/USSM10207214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d26eb518aca7c3609c69c6d77969013e90205ac65a3161ccad99e7c3b0eec09. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:18:49Z), 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/USSM11406902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccc65597e1d9cb0413672b7ced05ca0d9b6587e31a6bd83c734c139085cdb01. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:14Z), 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/USSM11406903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6890836e0174ad3be32a4311338c21b3f571ec7aab94e213fb75235b8619da16. 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/USSM18700210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b85ac1161142b287d0e7560d4fd66ca947e34fb2687637207e32b5505defa10. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/ESA032007004.