Use of bitcoin as a form of payment doubled in 2018 on darknet market sites, where users can buy anything from illegal drugs to fake IDs, even though the price of the cryptocurrency crashed, according to a study by data firm Chainalysis. Bitcoin transaction volumes on darknet markets rose throughout 2018 to an average of $2 million daily, nearly double the activity measured at the start of the year, according to Chainalysis. Overall bitcoin flowing into darknet markets fell to $600 million in 2018 from $700 million a year earlier, Chainalysis found. The dip was attributable to the closure of major markets AlphaBay ... (full story)