Tyler Thompson (September 21, 1907 – March 30, 2002) was an American Ambassador to Finland and Iceland. He also served as the director general of the Foreign Service. Thompson was a native of Elmira,
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 0xaa84e4a6595694a35b3b269f3ff7819a71b702faf4c3b121876d180435c6d466. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d815cde-b819-44d8-9610-b3c7c4b4ec8f.json and https://artists.proofprofile.net/proofs/artist/5d815cde-b819-44d8-9610-b3c7c4b4ec8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).