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 0x666c89cc19c40bba221d6c209fc8c729881fb53cbd22a313fcb9dea52d899b72. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88051358-a2e0-4092-a85b-7105fd78b778.json and https://artists.proofprofile.net/proofs/artist/88051358-a2e0-4092-a85b-7105fd78b778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Road to Ithaca (Original Soundtrack)
Hand In Hand - Junior Eurovision Song Contest 2008 Soundtrack
Hand in Hand (Junior Eurovision Song Contest 2008 Soundtrack)
Petrino Potami (Original Motion Picture Soundtrack)
Ο Βασιλιάς Ο Ήλιος (Από Την Τηλεοπτική Σειρά "Τρικυμία")