Except if they leave the money in bitcoin they don't have to explain where they got it. If they turn it into a foreign currency they have to tell a bank where

Except if they leave the money in bitcoin they don't have to explain where they got it. If they turn it into a foreign currency they have to tell a bank where it came from. Come to think of it, that's probably where all the ICO demand is coming from. These guys have money stuck in crypto and are desperately looking for a way to invest it.