John Pickard may refer to: John Pickard (archaeologist) (1858–1937), University of Missouri professor of archaeology and art history John Pickard (politician) (1824–1883), Canadian businessman and p
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 0x1474dbd856034ccb664dacd65863add61001fea8a6dc1af3eddad08ea89722d3. 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/b2f197c0-e0a6-467d-ad95-8a8cc34e1244.json and https://artists.proofprofile.net/proofs/artist/b2f197c0-e0a6-467d-ad95-8a8cc34e1244.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
John Pickard: The Gardener of Aleppo & Other Chamber Works