Benjamin Jeffery Sweet (April 24, 1832 – January 1, 1874) was an American lawyer, politician, public administrator, and Union Army officer. He was a member of the Wisconsin State Senate and a Deputy
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be6d9005cca4895c383336bae5d0cefd6e1cdca7118fc8b6a263948964ccba0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/828a82c8-d5f0-45d8-8f15-4a7c53e0c69e.json and https://artists.proofprofile.net/proofs/artist/828a82c8-d5f0-45d8-8f15-4a7c53e0c69e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).