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 0x6d66a85cc337e8078921ec16f8816122a3a2c0530e50e211a212481f40b1becf. 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/453d7edd-5046-4bcd-9b9d-57b68506acf4.json and https://artists.proofprofile.net/proofs/artist/453d7edd-5046-4bcd-9b9d-57b68506acf4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mit der Geschwindigkeit des Sommers (Ungekürzte Lesung)
Das Vorkommnis [Biographie einer Frau, Band 1 (Ungekürzte Lesung)]
Das Liebespaar des Jahrhunderts (Ungekürzte Lesung)