Frida Nilsson (born 1979) is a Swedish children’s writer whose first book was published in 2004. She has won numerous international shortlistings and prizes, including the August Prize, the German You
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 0xce6573363cb1e4d0d400c1562b07badf842dad8989f0a0ec0f95b97f8107b3b3. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fbe873a9-0fa4-401b-9f6b-182801e26b93.json and https://artists.proofprofile.net/proofs/artist/fbe873a9-0fa4-401b-9f6b-182801e26b93.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Im Pferdefieber [Hedvig!, Band 2 (Ungekürzt)]
Die Prinzessin von Hardemo [Hedvig!, Band 3 (ungekürzt)]
Sommer mit Krähe (und ziemlich vielen Abenteuern) [Ungekürzte Lesung]
Krähes wilder Piratensommer (Ungekürzte Lesung)