David Herrero Llorente (born October 18, 1979 in Bilbao, Basque Country) is a Spanish former professional road bicycle racer, who rode professionally between 2001 and 2009 for the , (two spells) and
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 0x5623157d114da9d1dc7d0e19e19e3b6ef89bbf24b63f9b860c4a081a221ef2ef. 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/db6d6e67-1277-41a8-86f0-8ef3df305ef5.json and https://artists.proofprofile.net/proofs/artist/db6d6e67-1277-41a8-86f0-8ef3df305ef5.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 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 0xbae32fbfc209c1ab1d09e3e99d9497705be5191f5a0d4f7ab192bb05c28e3783. 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/ES7841209905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41745bc641868d05a15e4ff686be5382a2edeb35173d6f277d33c6ae8e66b942. 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/ES7841010682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cb9e7ad854d2f5077194702411c99ccfaab004b086eaf352fc94b2808c075e. 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/ES7841010686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc508fb3c5e6f1610b937d38800de0181d672dc3a5efd71636ae3fb0b6d05f06. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTV32553497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef29056769a45cfde3e9c32915a5e5462d764cfb52f4c4292ffc9cbe5d6f95b8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTV32553499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c716cba8f6cc1798f9589e033e219469e6187017d738e5fa543e8aae2c09e8. 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/FR2X42597759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc7c5901eb97e63ed0e7cb11f3e157fb7fcb0ca0745b2e039a0d549a4b896ff. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:40Z), 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/GBKQU2504230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fec88fad50651c4f70278ea018e07ead36aa1d43af26affa863a1590144e951. 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/GBKQU2504231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2db9e84860622f9477cb146f07c6cdb9a7fb408235adff84c513a7e54eb1ad. 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/FR10S2521662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d4365bf71534fd33d43fce6d7f0812b0801962afd5a1ecc92fd33eccecce27. 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/FR10S2521663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b962a4657126c00ea972e3ad0017b30e9bf4d0483bcf625024c6a453248d9a. 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/DGA082464528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed809480e8375384a1138f3ce4972330e289d1f8201c1653ff3151e8a362a1d0. 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/ES7842130004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3e341260700172e813227ce823ceee4e05316ac213eaf7a0ebc1342f3adb4e. 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/ES7842130005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb851c59b1ce45375d9436314a738e62b4cc80a6cd24aa20633c3e2c3621e350. 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/ITSV22100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841374cf63957a00d769493f846ba5551a5591ffe9294486078d5dbd6c7e9d64. 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/ES7842028535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e56e342c1ac2450821cda9c9836d7ca968018b84ab059a5aa8cc4992a7fa412. 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/ES7842028529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489ff93d20ac843c1dff440bc70734b39024247abb0a620ce7c9e08fcb51c7d9. 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/GBJAJ2002706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215aa4fcfbe5cbae1531c23d4445909240f25695c2e0f7634e52dc0fab06a4e7. 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/GBJAJ2002705.
Bah Ke Lee EP (Incl. James Meid and Tayllor remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b548da470b724d8362fbae1e38136fb11ec6df458c8f7fda1102d7919938a7a. 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/ES8831821004.