Trevor Baxendale is a writer. His first Doctor Who novel The Janus Conjunction was published by BBC Books in 1998. He has also written novels for Torchwood and Blake's 7, as well as short stories, com
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 0x951044c4dcfbc54117f9768d3c4d2933e67740546be0b102551c3f51596c0d96. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7bbb4a0-9c19-4fc2-9bac-29f16d7697c4.json and https://artists.proofprofile.net/proofs/artist/a7bbb4a0-9c19-4fc2-9bac-29f16d7697c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).