United States prosecutors are pushing for the man who admitted to stealing 120,000 Bitcoin from crypto exchange Bitfinex in 2016 to serve five years behind bars. In an Oct. 15 filing, prosecutors asked a Washington, DC federal court for Ilya Lichtenstein to serve less than the 20 years he would have received after pleading guilty to one count of conspiracy to commit laundering. They argued a lighter sentence is warranted because he has no prior criminal history and has given “substantial assistance” that has “benefitted numerous investigations.” Earlier this month, prosecutors also asked the c…