Yakov Naumovich Pokhis (; born 24 January 1951), better known as Yakov Smirnoff (; ), is an American comedian, actor and writer. He began his career as a stand-up comedian in the Soviet Union, then im
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 0x649f34c508b29a961601a22cf2568d0c5133bb43cbeadd3c149caed856c08d1e. 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/612400d3-754a-4abc-8eaf-d2e42288526a.json and https://artists.proofprofile.net/proofs/artist/612400d3-754a-4abc-8eaf-d2e42288526a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).