Joshua Dewey (April 7, 1767 – February 23, 1864) was an American politician and veteran of the American Revolutionary War and the War of 1812. Dewey was born in Lebanon, Connecticut, April 7, 1767, w
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 0xde8e887772451f74e8ec0e18ac955a3919e3a4841d5ee6d3fbec701bc983346f. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d75a3c03-c510-45b7-8062-0cb2b80597a4.json and https://artists.proofprofile.net/proofs/artist/d75a3c03-c510-45b7-8062-0cb2b80597a4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).