Kim de l'Horizon (born 9 May 1992) is a Swiss nonbinary novelist, playwright and thespian. In 2022, they won the German Book Prize and the Swiss Book Prize for their debut novel . Early life and edu
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 0xd79b73600184b86cf58757105d8f22febabe2367d5bca874fefa7ad3366608e5. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de32ba0b-f554-4e67-ae6e-8bbdda6aec10.json and https://artists.proofprofile.net/proofs/artist/de32ba0b-f554-4e67-ae6e-8bbdda6aec10.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blutbuch (Ausgezeichnet mit dem Deutschen Buchpreis 2022 und dem Schweizer Buchpreis 2022)