thumb|upright=0.9|Dohmen in 2016 Bejo Dohmen (born 1984 in Cologne, West Germany) is a German actor. Filmography 2019 Tempo (Facebook Watch Series) 2019 Unter Tannen (TV movie) 2019 Villa Eva (T
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 0x83297afc6e75360fb76edb8962e3caa8075b90c1e43939c257a60116080f7df0. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b76a8d56-d4f4-44de-b4e2-b353e1b5c102.json and https://artists.proofprofile.net/proofs/artist/b76a8d56-d4f4-44de-b4e2-b353e1b5c102.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.