El Viejín, (born José Jiménez in 1962 in Madrid, in Caño Roto, the Gypsy part of Carabanchel, an old neighborhood of the capital), is a Spanish flamenco guitarist. He is often billed as José Jiménez '
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 0x5a6013aecaaa569cd4dc30eb23a08db43d228ce238de4cae9c0dcf0ce46ab316. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2248057e-ea55-4ef9-a59e-4538261b46b6.json and https://artists.proofprofile.net/proofs/artist/2248057e-ea55-4ef9-a59e-4538261b46b6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x50fe4df56cf4e4f09f7f72c0ec7cc78b67167c78bfdc83a23dfb888952d9a235. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES5129900234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5a52cc157a754646e358df65c30d460982b8be72de11bb2a22babdd0b4e137. 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/ES5129900237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004c22abc1155b7c9ca793bb677a677b67323db6b69d4a952a3b628184a53529. 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/ES5129900239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0425b20bbd9e942b22276eaf7179dddefde63270feed2017c6ddbadc5bce0e98. 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/ES5129900242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c834e6da752994e1fac1cc05cc97eba21aae58befdceef4977ca98f778600b9. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:41:18Z), 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/ES5129900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0425b20bbd9e942b22276eaf7179dddefde63270feed2017c6ddbadc5bce0e98. 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/ES5129900242.