Thomas Mehlhorn is an engineer at the Naval Research Laboratory in Alexandria, Virginia. He was named a Fellow of the Institute of Electrical and Electronics Engineers (IEEE) in 2014 for his work in u
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 0x24a4bf08775419a1b12408d982a0f7fcc1b5dadeba0d5ab0942c0819dad629bb. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b277da0f-7a56-4a94-b471-4aa10b2816ba.json and https://artists.proofprofile.net/proofs/artist/b277da0f-7a56-4a94-b471-4aa10b2816ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das Haus am Ende der Straße (Original Score)
Der Greif (Amazon Original Series Soundtrack)
Die Neue und der Bulle (Ein Duisburg-Krimi)