Hans Christian Gerlach is a professor of Modern History at the University of Bern. Gerlach is also Associate Editor of the Journal of Genocide Research and author of multiple books dealing with the Hu
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 0xef52b562475b4376cc3db61da627210a9a822484fd98a512eeec3c1461ab5df1. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a94d9495-970c-4f6f-b6c4-17b1ba0c76de.json and https://artists.proofprofile.net/proofs/artist/a94d9495-970c-4f6f-b6c4-17b1ba0c76de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).