Alexander Vinnik was extradited to France from Greece following an international standoff.

A Greek court has thrown the fight over Alexander Vinnik's fate into chaos, as both the U.S. and Russia want to prosecute him for an array of crimes.

The U.S. says Alexander Vinnik ran the cryptocurrency exchange BTC-e and engaged in money laundering at the scale of $4 billion.

The fine comes in the form of a civil money penalty, the first of its kind for foreign-based virtual currency exchangers.