TY JOUR TI Cryptocurrency as a financial instrument for committing crimes: main characteristics and classification KW Subject of the crime KW digital currency KW cryptocurrency KW fiat money KW cryptocurrency exchange JO Bulletin of the Kaliningrad branch of the Saint-Petersburg University of the Ministry of Internal Affairs of Russia AU Shepel', N.V. PY 2023 IS 0 PB SAINT-PETERSBURG UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF THE RUSSIAN FEDERATION