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 0xb6ac6660d21bc1c2804a48b4d10ee081dd7e466cbfef4daa94e1cdc3cc79c11a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0935f1aa-fda0-424a-a46f-42ec3e2a4b57.json and https://artists.proofprofile.net/proofs/artist/0935f1aa-fda0-424a-a46f-42ec3e2a4b57.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mix 3 La Juma / Que cosa Rica / Pegadita de los Hombres
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 0x707e3a38da8d18c6b444eabd69c80d2c29dc99e105a68f9d45ec90f94811a441. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:45Z), 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/US3DF2068112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cc6c94e1b591937d6a37c9ff23a4f1e6ffc8b0efccbdd5f42f70dd0c03cd61. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF2068138.
Mix 6 Latidos / Desolación / Penas / Cholita
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41849199d1c70c7bc2174a1b37d30db8621cf1e3138b3ac5333c7169ae869df4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:53:32Z), 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/US3DF2068972.
Andrés Valencia y Los Dukes Década de Éxitos
Cumbiaton Las Mejores Cumbias En Reggaeton Al Estilo De Los Dukes