TY JOUR TI PROSPECTS FOR THE USE OF BLOCKCHAIN TECHNOLOGIES IN THE SYSTEM OF STATE AND LEGAL POLICY KW law KW system of law KW bitcoin KW block chain KW cryptocurrencies KW hash KW mempool KW manners KW system KW block chain technologies KW state law KW state and legal policy JO Advances in Law Studies AU Garashko, A.Y. PY 2021 IS 9 PB Publishing Center RIOR