Jon Hill may refer to: Jon Michael Hill (born 1985), American actor Jon Hill (chef) (born 1954), American chef Jon A. Hill (born 1963), United States Navy admiral Jon Hill (footballer) (active 1997–2
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 0x373df42b5e0f3d552cf73cf5d43d33cf6ada9ec43045cb21d97cc3fbe414027f. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0544ccaf-74aa-4ed6-994f-8745c2f54e4e.json and https://artists.proofprofile.net/proofs/artist/0544ccaf-74aa-4ed6-994f-8745c2f54e4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).