thumb|A Māori man painting a tattoo on a carved wooden tiki at Whakarewarewa model village, New Zealand, thumb|upright|Hawaiian kii at Puʻuhonua o Hōnaunau National Historical Park thumb|upright|Tiki
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 0x93e7c34ebd07ec663e543014a7d400ed12ce5165549b6c0e6588d05b8ddfc30e. 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/83761124-4937-450f-9b47-0061e7bfdc40.json and https://artists.proofprofile.net/proofs/artist/83761124-4937-450f-9b47-0061e7bfdc40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).