Kobna Kuttah Holdbrook-Smith is a Ghanaian born British actor. He has played roles in films, including Father Richard Emery in Ghost Stories (2017), Oliver in The Commuter, Templeton Frye in Mary Popp
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 0x8d67429f3af55180485b291a1368cfba7df5e97b608364689e5ebdcb78fd4a76. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbb84809-71e0-4236-ac93-d6d660e94521.json and https://artists.proofprofile.net/proofs/artist/cbb84809-71e0-4236-ac93-d6d660e94521.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).