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 0x31568e289b768545f849a6febbb5f43898d04e1bc4b4fcf2660b4fb452f1f3f0. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/908a5bba-19f4-491c-8a9e-2de815981691.json and https://artists.proofprofile.net/proofs/artist/908a5bba-19f4-491c-8a9e-2de815981691.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geistkrieger: Feuertaufe [Geistkrieger, Band 1 (Ungekürzte Lesung)]
Geistkrieger: Libellenfeuer [Geistkrieger, Band 2 (Ungekürzte Lesung)]
Blinde Sekunden (Ein Fall für Kommissar Rieckers 1 | Spannung mit Gänsehautgarantie: Eine Frau verschwindet. Ist sie)