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 0xd58ccc2415d983631067b26e08fd15629c18859d3451727702d182ef4fee8021. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1b21c8c-d3a6-4e2c-a4a7-81e02546b679.json and https://artists.proofprofile.net/proofs/artist/f1b21c8c-d3a6-4e2c-a4a7-81e02546b679.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 0x5e7c1a8b44eecbf6a127578bcddec9bec0eb19838151d4392d65d5ead71adb08. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QMBZ92283700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e10ab2563f1303d419faf70106cedd3cd746448601e81cfe44866107c23dcd. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QMDA62219488.
Los Enamorados (Cualquier Día, Cualquier Hora)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccda73523432edd92cc9e6c9f8c1a81fd2a06113f35eb4746b4153733fcc1a7. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QMDA62219495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbc9142206e842c62aff5eab6d4e851f0349aad5907adb5f234e1ddd89b1a8e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMDA62219499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0462081a277baf58ac28137c0cbdc562b7ef95875530d29929c2c4ba4cdf366f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:52:31Z), 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/QMDA62216027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f7595077a99bb2297e9fd32803661c55f0a5b4fdf3ccff6afef66bcd82c0ba. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:48:07Z), 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/QMDA62216028.
Matices del Corazón, Vol. 24: Contigo a la Distancia
Matices, Vol. 22: ¡Que Bonita Es Esta Vida!
Matices, Vol. 23: ¡Que el Año Se Acabe Bailando!
Poupurri Boleros: Sin Ti / Contigo / Rayito de Luna
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd181ad0ea997ed4c0861ac71264a300b863cb734e44f887d6c2eccbbeac5e6ba. 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/USA371496832.