thumb|190px|Krystyna Kuhn Krystyna Kuhn (born 1960, in Würzburg) is a German writer, best known for her crime-thriller book series Das Tal Season (2010–2013) and Monday Club (2015–2016). References
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 0x287e61aae407af7da7f4dc9d0b8580adc8a11ccc127d870b937b3ed73eb619f5. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5cb2d33-17ac-4906-85b8-6517e023263f.json and https://artists.proofprofile.net/proofs/artist/d5cb2d33-17ac-4906-85b8-6517e023263f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das Tal, Season 2, Teil 4: Die Entscheidung