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 0xeef96687d0fe2d13c72fb1f19ba9b0f43e4b2525c7999034284a7816409c7cb7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f2243e9-cd48-4a9b-b8ce-e14657e3cb39.json and https://artists.proofprofile.net/proofs/artist/2f2243e9-cd48-4a9b-b8ce-e14657e3cb39.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Devil's 8 (Original Motion Picture Soundtrack)