Mark James Harrison (born 28 March 1977), known professionally as Samuel James, is an English actor and voiceover artist, known for portraying the role of Garth Stubbs in the ITV sitcom Birds of a Fea
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 0xe746b9a42cf187d88c479c5b1b82de6ad00ceec1e8fcf983fe3eb0b5949b5c11. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09239053-748f-4904-8cd3-2823bcc52c12.json and https://artists.proofprofile.net/proofs/artist/09239053-748f-4904-8cd3-2823bcc52c12.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).