Gary Russell (born 18 September 1963) is a British freelance writer, producer and former child actor. As a writer, he is best known for his work in connection with the television series Doctor Who and
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 0x74d1492ecade32f9792c8da7c6adb685ca48ab66668eb825c9cafbc8213d9386. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/212f5a55-1e8f-4501-a676-4b364b83cdcc.json and https://artists.proofprofile.net/proofs/artist/212f5a55-1e8f-4501-a676-4b364b83cdcc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).