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 0x31bd4ee21387507c62ef037b7e41c9485525305810b6f1e90c6fcab42992a797. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/991673cf-dd9b-4204-9be8-b526bee18d60.json and https://artists.proofprofile.net/proofs/artist/991673cf-dd9b-4204-9be8-b526bee18d60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).