IRS Casts Unusually Wide Net for Bitcoin User Data Author: Timothy Sohn Last Updated: 28 November 2016 (American Banker) – A request by the IRS for user data from a bitcoin exchange highlights simmering tensions between compliance and customer privacy for financial institutions and will test how those demands are balanced in the young field of cryptocurrency. Under a procedure called a John Doe summons, the IRS this month asked a federal court in California to approve its request for Coinbase to turn over records on any user who had made digital currency transactions between 2013 and 2015.