__NOTOC__ Alirio Díaz (12 November 19235 July 2016) was a Venezuelan classical guitarist and composer, considered one of the most prominent composer-guitarists of South America and an eminent musicia
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 0xcd956aca65383b160d2337eb5f715cc900e2de51e388a7340402fae7f1a03734. 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/b3d98f64-f428-4125-98ac-79a12b27e04b.json and https://artists.proofprofile.net/proofs/artist/b3d98f64-f428-4125-98ac-79a12b27e04b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'anthology de la guitare, no. 6 (Mono version)
Concerto De Aranjuez For Guitar And Orchestra And Other Guitar Favorites
Alirio Diaz: Five Centuries Of Spanish Guitar Music
Five Centuries Of Spanish Guitar Music (Digitally Remastered)
Guitarra De Venezuela (Digitally Remastered)
Alirio Díaz, Vol. 1: Lauro Guitar Concerto
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 0x05869317809dd56dd3ed65c46afd2cc6e7db90e60782abea76588c842ad8cc25. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/CAAGN1699701.
Modern Art of Music: Spanish Guitar Music
The Legend of Alirio Diaz, Vol. 2 (1956-1960)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9997c97738cc7cda6a98c8001567ca798c7ac04c14ab6cdc1633c9a915360bc. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QM7281464020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f5eabe31ad5f69e283a5fd8cfae48ff16e5572266e6ebf116399675d5a4b06. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/QM7281464026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170b07d32733d6f6d266eeda6fb366245573af53b796e18580e2ec6a4a4a91e7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QM7281464034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da3cc7adcc6075c7faec71c2a1129d6dff4fe0bb97d45ea4902b02133d824f0. 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/QM7281464036.
Mudarra, Narvaez, Sanz & Others: Works for Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef613c11ceaf1c99c07b65b99c15f33997fba687d5251bd67df93bf23a80145. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ITX921002334.
La Filla del Marxant (Arr. M. Llobet Soles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dfd4c3abf65d571033f3b3f4258c92f53bff64304ddb50c278bd9f224f4465. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ITX921002336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fe6b6029181db930267bcd42b0367c14fdaefcfc079a496fc76e9cc4aec8e3. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITX921002337.
Keyboard Sonata in D Minor, Kk. 32 (Arr. for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42120e014b6662649dff87780bf36c385648135680305a39e36fcb89121e8d13. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITX921002338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6e7c73e6e282989612c60f991a193cd20f329af8a136ad7125ceaab58326a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ITX921002341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ad0e2f0135c6a5a785e7c73a402a239aee4cd64fc7ab469aa44baefeab3300. 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/ITX921002354.
Concierto de Aranjuez para Guitarra y Orquesta
Milán, Molinaro, Barrios & Others: Guitar Works (Live)