Dave Ellesmere (born 3 August 1962) is an English rock musician and later electronic DJ, born in Southport, England, who played drums during the 1980s in UK punk bands such as The Insane, Discharge, F
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 0x93bfe2f6b5b474ab10bb20ad635641e6d0cc00682499717cb01606ad91f805a3. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f3149eb-56e3-4ea4-b8a5-3e44336e6a46.json and https://artists.proofprofile.net/proofs/artist/9f3149eb-56e3-4ea4-b8a5-3e44336e6a46.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).