Ive only got one client that's trading in cryptocurrency...he sent me the 8949 from his Cointracker account, and we reported his losses on his tax return a couple of weeks ago...he just called and says he thinks he may need to file the 8938 since some of these trades are with foreign currency.

I cant tell by the Cointracker paperwork what's foreign and what's not...what is it I need him to get me in order to determine if he needs to file the 8938?