Hellmuth Karasek (4 January 1934 – 29 September 2015) was a German journalist, literary critic, novelist, and the author of many books on literature and film. He was one of Germany's best-known feuill
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 0xeaac5ddc25930695c087aa11ec82e960db2b2a79a7845a2351ea8354be1a491e. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3a806012-31d6-48f1-bf00-d455e41e4e4e.json and https://artists.proofprofile.net/proofs/artist/3a806012-31d6-48f1-bf00-d455e41e4e4e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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