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 0x643e31a6bba4e92720bd81566c658b9b5f449bbe2de079b79f6c940fb1052f5a. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d43ab688-6317-48a4-b59b-06d46ed2ccb9.json and https://artists.proofprofile.net/proofs/artist/d43ab688-6317-48a4-b59b-06d46ed2ccb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Magic of The Budapest Gypsy Orchestra
Gypsy Tunes and Dances As Performed by the Budapest Gypsy Orchestra