IRS in intensely interested in filers who transact in virtual currency. And it is requiring more disclosure. Starting with returns filed this year, people must answer on Schedule 1 of the 1040 whether they have received, disposed of, sold, exchanged or acquired any financial interest in virtual currency, such as bitcoin. If the answer in no, Schedule 1 is not required to be attached to the 1040 filing unless the taxpayer has income or deduction items to include on the schedule.