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 0xf9dad590b3539d95d46dbe712b9e4ce2a288fd5a433f574313e6ea60985587a5. Chain 2 (Bitcoin): anchored in block 953958 (2026-06-16T14:52:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/267e43d6-84bf-4dd1-a575-641253fee8da.json and https://artists.proofprofile.net/proofs/artist/267e43d6-84bf-4dd1-a575-641253fee8da.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Llorando: El Amor Es Así / Mil Heridas / Lloro
Mala Amiga: Mal Amigo / Libre Y Solterita
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 0x8dcef7e01012c43ec0c9ec63087c4a5549c81de24b108a4d14c9f33335f005c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6N22551876.
Marcado: Quiero Sentirte / Por Que la Quieres / Marcado por Amor
Estrellas 02: Cerveza, Ron y Néctar / Dónde Estás Amor
El Sol No Regresa / Como Yo Nadie Te Ha Amado
Boleros: Cruel Condena / Los Dos Perdimos / Tú Fuiste Mi Gran Amor