Charles Knight may refer to: Charles Knight (engraver) (1743–c. 1827), English engraver Charles Knight (publisher) (1791–1873), English author and publisher Charles Knight (doctor) (1808–1891), New Z
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 0x0b247785434716b7d52229076e558bd1e688b3720dce3352664a14478eaa89e3. 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/7a38d95f-200b-48ea-83d6-e1b1e9bf6ea5.json and https://artists.proofprofile.net/proofs/artist/7a38d95f-200b-48ea-83d6-e1b1e9bf6ea5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).