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 0x4e197aed9b11ccd3eecff935f4a992f93c741519bb28934d1b01c37e7f38b665. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5da31449-44d3-4b54-986a-6d663bb5f5dd.json and https://artists.proofprofile.net/proofs/artist/5da31449-44d3-4b54-986a-6d663bb5f5dd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sisi: Das dunkle Versprechen [Sisi, Band 1, Das Hörbuch zum Serienereignis bei RTL+ (Ungekürzte Lesung)]
Verlangen und Verrat [Sisi, Band 2 (Ungekürzte Lesung)]