Federal prosecutors alleged that Ulbricht had paid $730,000 in murder-for-hire deals targeting at least five people,[28] allegedly because they threatened to reveal Ulbricht’s Silk Road enterprise.[35] Prosecutors believe no contracted killing actually occurred.[28] Ulbricht was not charged in his trial in New York federal court with any murder-for-hire,[28][36] but evidence was introduced at trial supporting the allegations.[28][37] The evidence that Ulbricht had commissioned murders was considered by the judge in sentencing Ulbricht to life, and was a factor in the Second Circuit’s decision to affirm the life sentence.[37] A separate indictment against Ulbricht in federal court in Maryland on a single murder-for-hire charge, alleging that he contracted to kill one of his employees (a former Silk Road moderator),[38] was dismissed with prejudice by prosecutors in July 2018, after his New York conviction and sentence became final.[39][40]
https://en.m.wikipedia.org/wiki/Ross_Ulbricht
He was never convicted of this “plot”. I think they just made it up.