Cocksure is a novel by Mordecai Richler. It was first published in 1968 by McClelland and Stewart. A satirical work, the novel centres on Mortimer Griffin, a middle-class Anglican from Caribou, Ontar
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 0xc9fc1425df4d264142ae438166170249f64ef2545c8ae0c2baff35565944b66f. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f00ea96-e722-4385-9bdf-3ce4c5ab37e2.json and https://artists.proofprofile.net/proofs/artist/5f00ea96-e722-4385-9bdf-3ce4c5ab37e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).