The lawyer, Arkady Bukh, said that as a result of the plea bargain he now expected Vinnik to get a prison term of less than 10 years.

“He pleaded guilty on a restricted number of charges,” TASS quoted Bukh as saying, adding that Vinnik had faced life imprisonment.

“The culmination of the negotiations was a deal with the prosecutor’s office. We expect that the prison term will be up to 10 years.”

Vinnik, accused of laundering more than US$4 billion through the digital currency Bitcoin, was arrested in 2017 in Greece at the request of the US, although Moscow has repeatedly demanded he be returned to Russia.

He was extradited to France from Greece where he was sentenced to five years in prison for money laundering before he was sent back to Greece and then on to the US in 2022.

The US department of justice has said Vinnik “allegedly owned, operated, and administrated BTC-e, a significant cybercrime and online money laundering entity that allowed its users to trade in Bitcoin with high levels of anonymity and developed a customer base heavily reliant on criminal activity.”

The maximum penalty for the US charges against Vinnik is 55 years in prison, according to the US department of justice’s website.