athens greece top court clear way wednesday extradition unite state russian man also want moscow suspect launder billions dollars digital currency bitcoin final decision alexander vinnik extradite lie greek justice minister step resolve compete request vinnik allege mastermind billion bitcoin launder ring one seven russians arrest indict worldwide year u.s. cybercrime charge u.s. authorities accuse run btc-e digital currency exchange use trade bitcoin facilitate crimes range computer hack drug traffic since 2011. deny charge say technical consultant btc-e operator since vinnik arrest village northern greece july moscow also request return home do nationals want unite state vinnik agree return russia want less fraud charge amount 10,000 euros appeal greek supreme court rule extradite unite state supreme court reject appeal wednesday bitcoin first digital currency successfully use cryptography keep transactions secure anonymous make difficult subject conventional financial regulations price bitcoin soar year hit another all-time high tuesday two days launch first bitcoin futures contract u.s. exchange greek top court clear way u.s. extradition russian cybercrime suspect