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 0x9736ca29eabd86c61825a058805479610be06da3ccf777f5125a807ed7ce14b9. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/236ddfc8-eeb0-498a-96d7-e038db51205e.json and https://artists.proofprofile.net/proofs/artist/236ddfc8-eeb0-498a-96d7-e038db51205e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cronica de Una Tormenta (Original Motion Picture Soundtrack)
Ya No Duermo (Original Motion Picture Soundtrack)
Basaide (Original Music for Contemporary Dance)
Kinka (Original Motion Picture Soundtrack)
Nora (Original Motion Picture Soundtrack)
Ferrotipos (Original Motion Picture Soundtrack)
Beyond the Summit (Original Motion Picture Soundtrack)
Alguien que cuide de mí (Banda sonora original de la película)
Las Buenas Compañías (Banda Sonora Original)
Verano en rojo (Original Motion Picture Soundtrack)
El bus de la vida (Original Motion Picture Soundtrack)
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 0xebcdb40937beb1c764c12f209831a3d1a951262de01d468842236420f67535c7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWDE2424805.
La Frontera (Original Motion Picture Soundtrack)