Jack Burton may refer to: Jack Burton (character), lead character in the film Big Trouble in Little China Jack Burton (cricketer) (1923–2001), Australian cricketer Jack Burton (equestrian) (1919-2
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 0xa3b5be06ec6ba895a04e36aab346da2fd5b2bfa8a42c2f195d30b8b9963535a2. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49970589-2202-4fdd-955f-e4e5b4d6ede4.json and https://artists.proofprofile.net/proofs/artist/49970589-2202-4fdd-955f-e4e5b4d6ede4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).