Ulrich Becher (2 January 1910 – 15 April 1990) was a German author and playwright. Overview thumb|270px|Becher ulrich 1924 Becher was born in Berlin, where, after attending the Wickersdorf Free Sch
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 0x8e4b3a50e75acb2a9ff1d45dcf7f1b65575f4d53ccede06616814ced02b439a2. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1392480-2fae-47a5-8dee-08acc4217778.json and https://artists.proofprofile.net/proofs/artist/f1392480-2fae-47a5-8dee-08acc4217778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).