thumb|William Light, Founder of Adelaide, SA, by George Jones RA, National Portrait Gallery, London. thumb|Survey monument in its original location. (Plaque detailClose-up of plaque on survey monument
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 0x1e4406a8a822712b056da41047aaa2dd2e237b84febab20a7fe2267a889a14a7. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0c51924-4bee-4b3d-b88e-3f577903c5f7.json and https://artists.proofprofile.net/proofs/artist/b0c51924-4bee-4b3d-b88e-3f577903c5f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).