Karin Fossum (born 6 November 1954) is a Norwegian author of crime fiction, often referred to as the "Norwegian queen of crime". Early life Karin Mathisen was born on 6 November 1954 in Sandefjord, i
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73fc0d1b63d97b1d979c6b186ad572d8a5b8c9416fe0c62ee4f3aebd420e417. 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/df6df9f1-3cfb-487e-976b-68d0366640c4.json and https://artists.proofprofile.net/proofs/artist/df6df9f1-3cfb-487e-976b-68d0366640c4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Familienbande (Die Psychologie des Bösen – das spannende Prequel zur Eddie-Feber Reihe von Norwegens Queen-of-Crime)
Fremde Blicke (Thriller | Konrad Sejer 2)