President Donald Trump pardoned Ross Ulbricht, the creator of the drug marketplace Silk Road who is revered by many cryptocurrency enthusiasts and libertarians. “I just called the mother of Ross William Ulbright to let her know,” Mr. Trump wrote in a post on Truth Social, misspelling Ulbricht’s name.

Console Wars’ duo Jonah Tulis and Blake J. Harris have conducted more than 60 hours of interviews with Ulbricht, who became a cause célèbre among libertarians and cryptocurrency enthusiasts after being handed two life sentences.