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 0xccd73b4b29621b3cf48a7c68df49b0b8c91988fd60a8656278ca91229e76a160. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a7b514d-5b50-4d6c-9cd3-d0beb95c8e43.json and https://artists.proofprofile.net/proofs/artist/9a7b514d-5b50-4d6c-9cd3-d0beb95c8e43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carol of the Bells (Piano Orchestral Cover)
It's the most Wonderful Time of the year (Piano Cover)