Gregory Cooke (born 1 January 1966) is an English actor who best known for playing Robert Todd Lincoln in the 1988 miniseries Lincoln and wireless operator Jack Phillips on the 1997 blockbuster Titani
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 0x92337b12c5a6f858fe66d4d3722c31415c8d495b470dd9aced3b4ec945129569. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23ce8c1b-7c8f-4b60-ab85-0889ccd42d5d.json and https://artists.proofprofile.net/proofs/artist/23ce8c1b-7c8f-4b60-ab85-0889ccd42d5d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).