Law enforcement said Ulbricht created the “most sophisticated and extensive criminal marketplace” on the internet.

Ulbricht, 40, was about 10 years into his life sentence for helming an online black market where drug dealers, money launderers, and traffickers used bitcoins to mask more than $214 million in illicit trades. (Ars thoroughly documented the Silk Road saga here .)

U.S. President Donald Trump on Tuesday pardoned Silk Road founder Ross Ulbricht, who was sentenced to life in prison for running an underground online marketplace where drug dealers and others conducted more than $200 million in illicit trade using bitcoin.