Denham may refer to: People Denham (surname) Denham Madena, Sri Lankan cricketer Denham Price (1940–2013), South African cricketer Places In the United Kingdom Denham, Buckinghamshire Denham Ae
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 0xeebcfbdb563553f83c3acf727e873800ef30a68381ed4f486c157c9e1512ce4f. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8c66507-931a-468d-8d21-17c5a1f0c35d.json and https://artists.proofprofile.net/proofs/artist/e8c66507-931a-468d-8d21-17c5a1f0c35d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).