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 0x6a3cb1a7df22a013f5cf3b169182c81bd714aa6b88414ab0934056a44a6a3788. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d117cd2c-924a-47d4-920b-2ca4fba694ce.json and https://artists.proofprofile.net/proofs/artist/d117cd2c-924a-47d4-920b-2ca4fba694ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Das Geheimnis um die alte Dame [Klara Golder ermittelt, Band 1 (Ungekürzt)]
Das Geheimnis um den toten Pfarrer [Klara Golder ermittelt, Band 2 (Ungekürzt)]
Das Geheimnis um die verschwundene Putzfrau [Klara Golder ermittelt, Band 3 (Ungekürzt)]
Das Geheimnis um die widerspenstige Marktfrau [Klara Golder ermittelt, Band 4 (Ungekürzt)]
Das Geheimnis um den legendären Kinostar [Klara Golder ermittelt, Band 5 (Ungekürzt)]
Das Geheimnis um das verschwundene Gemälde [Klara Golder ermittelt, Band 6 (Ungekürzt)]
Das Geheimnis um den seltsamen Dieb [Klara Golder ermittelt, Band 7 (Ungekürzt)]