thumb|Photo of Jim Cooke at the Synge Street PPU Reunion dinner 2004Jim Cooke is a retired science teacher from Dublin, Ireland. He taught primarily physics,A Special Recognition of Mr Jim Cooke: “Ins
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 0xab69b07b96bf0bbcf9ad6034fe00ff186f4b73ef8c025590d1465e778cd6032e. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e700d23-604b-45d9-9c18-4f8cfab2ade2.json and https://artists.proofprofile.net/proofs/artist/3e700d23-604b-45d9-9c18-4f8cfab2ade2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).