Oliver Mason is a British actor and voiceover artist who lives in London. He began acting with The Guildhall School of Music and Drama aged six in his hometown of Norwich. He trained at the National Y
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 0x54f226ee5421a3b9214632cc5971d08edd1523dc859b13603be0f0153b17cd4f. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc873236-ed4f-4d1b-87e3-7117ee1c3f27.json and https://artists.proofprofile.net/proofs/artist/dc873236-ed4f-4d1b-87e3-7117ee1c3f27.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.