About two years ago, we wrote a post about actions being taken by the U.S. Internal Revenue Service (“IRS”) in connection with its concern that cryptocurrency owners were underreporting or failing to report gains. One such action was the use of John Doe summonses. The IRS issues a John Doe summons when it wants to obtain information about a group of unidentified taxpayers where it suspects many are non-compliant. If successful, a John Doe summons…