The United States tax collecting and legislation authority, the Internal Revenue Service, sends a new round of letters to cryptocurrency holders. . . . .. . . .. .. ... . . . . .. . .. . . . . . . . . . . . . . . . .. . . . . . . . . . . .. .. . . . . .. . . .. .. . . . .. . . . .. . .. .. . . . .. . . . .. . . . .. . . . . .. ..
