Jurek Becker (; – 14 March 1997) was a Polish-born German writer, screenwriter and East German dissident. His most famous novel is Jacob the Liar, which has been made into two films. He lived in Łódź
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 0xbcac0671425ca95bd2e0eaa3beec2df056e627996b6b98872d5389c9a3cabdab. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8750f8dd-06ea-4fe1-8eca-d51870dc9550.json and https://artists.proofprofile.net/proofs/artist/8750f8dd-06ea-4fe1-8eca-d51870dc9550.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jurek Beckers Neuigkeiten an Manfred Krug & Otti (Ungekürzt)