Deborah Robertson (1959) is an Australian writer. She was born in Bridgetown, Western Australia, and lives in Melbourne. Awards International Dublin Literary Award, 2008: longlisted for Careless Nita
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 0xb3b11365e64250ab4868d995bf3d7743c49a58509715a5c5051174914cc69e86. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf0df3e6-3e5a-4e13-846a-3123f8bfc306.json and https://artists.proofprofile.net/proofs/artist/cf0df3e6-3e5a-4e13-846a-3123f8bfc306.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).