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 0xcb4b6d731f42fceadb259b3b18c62a431cf616686bdc75ae2ff4d70ac73fa432. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17210434-04a9-4446-ba6b-467df77861fa.json and https://artists.proofprofile.net/proofs/artist/17210434-04a9-4446-ba6b-467df77861fa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Fallensteller (Kriminalroman von Axel Berger)
Florance Bell und die Melodie der Maschinen
Wer stirbt denn nicht? (Wie die Aussicht auf den Tod mein Leben veränderte)
Die Familie des Wurdalak (Stimmen aus dem Jenseits 2)