USA prosecutors are reportedly seeking a prison sentence of more than 50 year for Levashov.
USA officials charge that as the operator of BTC-e, Vinnik extensively laundered criminal proceeds thereby facilitating drug trafficking and hacking, accusations that he has repeatedly denied.
Vinnik, a 37-year-old Russian national, has been indicted by a USA grand jury on 21 counts related to financial crimes.
On Tuesday, Spanish court agreed to extradite detained Russian Pyotr Levashov to the US. A USA warrant lead to his July 25th arrest while he was on vacation in Greece. Vinnik is allowed to appeal the decision to the Greek Supreme Court, and he is expected to do so this week. Reuters reports that a Greek court today cleared him to be extradited to the USA, where he could face up to 55 years in prison.
Russian Federation also submitted an extradition request on separate charges, and Vinnik stated he would voluntarily comply with that request.
In the event that the Supreme Court upholds the decision, Greece's justice minister will have the final say over whether Vinnik's extradition to the USA can go ahead, or whether his transfer to America needs to be blocked in favour of Russia's request.
USA intelligence officials concluded in January that Russian President Vladimir Putin authorized Kremlin-sponsored operatives including hackers and propagandists to interfere in the 2016 White House race in order to hurt the campaign of Democratic candidate Hillary Clinton, spurring a tit-for-tat row that has resulted in dozens of diplomats being expelled from either country.
Russia's Prosecutor-General's Office requested Vinnik's extradition to Russian Federation.
"If I go to the US, I will die in a year".
Russian Federation has repeatedly denied allegations that it meddled in the race.