thumb|160px|right|Commissioner John Lawley Commissioner John Lawley (31 December 1859–9 September 1922) was a Commissioner in The Salvation Army, the second highest rank attainable by Officers in the
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ab5a011cfc72b8357b6adddc1bf0c8fc53b3b231118e924c35aeb7d515b876. 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/89340a9f-1049-4b94-8334-bf312c2956ac.json and https://artists.proofprofile.net/proofs/artist/89340a9f-1049-4b94-8334-bf312c2956ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).