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 0x9dad686635f8ba8a7f12e47cb4472c8c1ad008d7f2b2d5a41289fb36e8361a7d. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2f829fc-4d2a-4b70-8b01-387db160f52d.json and https://artists.proofprofile.net/proofs/artist/c2f829fc-4d2a-4b70-8b01-387db160f52d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Christmas Song [Chestnuts Roasting On An Open Fire] (Piano/Vocal Only)