Michael Robotham (born 9 November 1960) is an Australian crime fiction writer who has twice won the CWA Gold Dagger award for best novel and twice been shortlisted for the Edgar Award for best novel.
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 0x168f4a19a8a45a221f69c15ba30f896f29b17b02be0ae7bfa81c178e23b21863. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bd02418-710b-4d34-b8cf-5ad7c2a5bd93.json and https://artists.proofprofile.net/proofs/artist/9bd02418-710b-4d34-b8cf-5ad7c2a5bd93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).