thumb|Wolfram Berger, 2013. thumb|Wolfram Berger (left) Wolfram Berger (born 12 October 1945 in Graz) is an Austrian actor.BFI.org Selected filmography Assassination in Davos (1975) General Sutter
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 0xafef88378a466b2198df3bc1212d316b989737a3b357a8d5937217ff73601f05. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d47b0f8-4230-4e3a-88bc-c765f184f7c8.json and https://artists.proofprofile.net/proofs/artist/9d47b0f8-4230-4e3a-88bc-c765f184f7c8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lebens-Ansichten des Kater Murr - E.T.A. Hoffmann
E.T.A. Hoffmann: Lebens Ansichten des Kater Murr