Thompson may refer to: People Thompson (surname) Thompson Lantion, Filipino retired police general Thompson M. Scoon (1888–1953), New York politician Marko Perković (born 1966), Croatian musicia
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 0x05d9b660f749a01f0a382cca60c984e7b18925a4e4b5c731ca5f7f920f5c1736. Chain 2 (Bitcoin): anchored in block 954025 (2026-06-17T00:32:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3858e8e4-b66d-4e92-91ab-09ef303c50a5.json and https://artists.proofprofile.net/proofs/artist/3858e8e4-b66d-4e92-91ab-09ef303c50a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).