1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x09623f91206df4e300b36d26f951e2d2c76aa55e9befc5589f33473f494c3cd6. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ae0c330-0881-416b-a6c5-dbb08903523b.json and https://artists.proofprofile.net/proofs/artist/4ae0c330-0881-416b-a6c5-dbb08903523b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Lápiz del Carpintero (Banda Sonora Original)
Non ti muovere (Colonna sonora originale)
Los Lunes Al Sol (Original Motion Picture Soundtrack)
On the Other Side of the World - Instrumental
Los Lunes al Sol (Original Motion Picture Soundtrack)
Tiempo Después (Banda Sonora Oficial de la Película)
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 → block OTSBitcoinBlock must exist at that height 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 0x3c7fadf3f7527e706ff56458e200fe1c900265237f3831a8a1015aa48494c2c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5021801151.
Ana Tramel. El juego (Música Original de la Serie de RTVE)