Private John Dame (c. 1784–?) was a member of the Lewis and Clark Expedition. Born in about 1784 at Pallingham, New Hampshire, he was five feet nine inches in height and had blue eyes, light hair, and
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 0x56b4338872359cddb1816e492c80d0097c3eb6ef8d8211395e578fd40050431f. Chain 2 (Bitcoin): anchored in block 954124 (2026-06-17T18:22:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a411129-6c93-44f9-a0e3-1ba70c72c6d5.json and https://artists.proofprofile.net/proofs/artist/7a411129-6c93-44f9-a0e3-1ba70c72c6d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).