Legal Sparring Continues in Bitcoin User’s Battle with IRS Tax Sweep Author: Timothy Sohn Last Updated: 02 January 2017 (Fortune) – In a strange twist, Coindesk reports that the IRS has, somewhat indirectly, removed one target from its broad request for data about U.S. users of the Bitcoin exchange Coinbase. It no longer wants data about Jeffrey Berns, a lawyer who also happens to be fighting the IRS’s “John Doe” request in court.