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 0xe81a45484fe33abeb65906e38fa8262e6f97729ed87800b8b718baddd1ed394a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/03d30474-3ed8-4f06-9f71-44265dce9eb1.json and https://artists.proofprofile.net/proofs/artist/03d30474-3ed8-4f06-9f71-44265dce9eb1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Inselblut [Nils Petersen, Band 1 (Ungekürzt)]
Inselgrab [Nils Petersen, Band 2 (Ungekürzt)]
Inselschatten [Nils Petersen, Band 3 (Ungekürzt)]
Inseldämmerung [Nils Petersen, Band 4 (Ungekürzt)]
Inselgeister [Nils Petersen, Band 5, Insel Krimi (Ungekürzt)]