The Department of Justice (DOJ) announced Thursday that an early bitcoin investor has pleaded guilty to "filing a tax return that falsely reported his cryptocurrency gains." Texas resident Frank Richard Ahlgren III pleaded guilty to understating the capital gains he received from selling $3.70 million worth of BTC. According to court documents, Ahlgren bought 1,366 bitcoins in 2015, each worth no more than $500. In October 2017, he paid about 370...