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 0x13b8c52b87011f8a9c2a370aa4227f3a88611d4cfeb731e1fb998634bf56197e. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffcf6e70-0b62-4713-9fe4-5560430f1dba.json and https://artists.proofprofile.net/proofs/artist/ffcf6e70-0b62-4713-9fe4-5560430f1dba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Souvenir (Original Motion Picture Soundtrack)
Gratulantes - Real Filharmonía de Galicia (Live)
Only Lights Inside - Sinfónica de Pontevedra (Live)