Mealey's (July 20, 2017, 1:22 PM EDT) -- SAN FRANCISCO — A John Doe customer of a virtual currency firm has established his interest in an Internal Revenue Service enforcement action seeking personal records of the firm’s customers, a California federal magistrate judge ruled July 18, granting the Doe’s motion to intervene and oppose the IRS’s summons (United States v. Coinbase Inc., No. 3:17-cv-01431, N.D. Calif., 2017 U.S. Dist. LEXIS 111756)....