Richard Dunn may refer to: Richard Dunn (politician) (1905–1988), American politician from Maine Dick Dunn (boxer) (1908–2001), New Zealand boxing coach Richard Dunn (footballer) (1919–1985), English
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 0xb3d1d33a3e707b0dcccd87862bbbddb2959f0f23e79d9c7e7d880f7ec23ec909. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c552a635-6015-4b86-95a5-9b883596789a.json and https://artists.proofprofile.net/proofs/artist/c552a635-6015-4b86-95a5-9b883596789a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).