Luis de Córdoba, born Luis Pérez Cardoso in Posadas on May 15, 1950, is a Spanish flamenco singer. He won 2 national awards in the National Contest of Flamenco Art in Córdoba in 1974 and 1977 and nume
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 0xcbd298b2b0f3be90cbf4b3a996b505f6ff1d2a580c6da648ec823527fe7124c0. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a12198d6-79fc-4488-9e42-de92c973d357.json and https://artists.proofprofile.net/proofs/artist/a12198d6-79fc-4488-9e42-de92c973d357.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Huelva - Fandangos al estilo de Pepe la Nora
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 0x46f7ff40f383776027bf56c3bd7a62a377c510691326cde1313a63779167c7a1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5010200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb687128cf44321adb3c862ffd689f2b9924d832892131da5e753566c5d2cbc. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ES5010200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69c938c650104c1a1111964dca8f17e339e3974c29036bc5ff9121ac7c6de12. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ES5018946000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807311c433f789117f33d285a2231d64a7d82646386fe7a43169fc0a32d84cba. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ES5018946004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5bb25b1bc91d4fe3d4bde1ddf34e5ed0ed34acca34bb5732497b785c7b6419. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5018946005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e8c765e9df8b750dae554eb4fc5050f62f9341c6d78164f941f550d40ee7b6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:40:49Z), 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/ES5709903603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38942ad292f98d9192c3865a158453202f2fa8b42f5fd8ae3519944019b9c575. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES5709903607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2e517cd55d3642b238cc0306036061c2de6f56d9c3107f73424e68870cdf66. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5709903608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dab9fe096a62f3b8b1a7b96e7737b65561deae9fa9f2abccb0d5cb5d2a00725. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:34Z), 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/ES5709903613.
Luis de Córdoba Con la Guitarra de Vicente Amigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dd3b49da7b51a06a4ad5d728be61c0b20dc7610b3135c15ab4366f93fa5cfb. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/ES6671602644.