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 0xcd6b18390020e6efe0ca4721c7a35f2d981cf50a3438f62d90bcedc2540de2a3. 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/924ccc19-9e7e-4ac4-988a-ca07c791e75b.json and https://artists.proofprofile.net/proofs/artist/924ccc19-9e7e-4ac4-988a-ca07c791e75b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
(Looking For) The Heart of Saturday Night
Ain’t No Love In Oklahoma (Twisters cover)