Jon Kelly is a British audio engineer and record producer, who began his career as an engineer at Air London Studios. He has produced albums and singles for Chris Rea, the Damned, Kate Bush (where he
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 0xfa6eb38ec984fb3c45853b7ac0e373df4b18e154e14a6b0e61c26a1fb3d30e70. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8d88902-a4b0-4084-87b7-1e395e82d97a.json and https://artists.proofprofile.net/proofs/artist/b8d88902-a4b0-4084-87b7-1e395e82d97a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).