"Ulbricht was not charged in his trial in New York federal court with murder for hire but evidence was introduced at trial supporting the allegations. The district court found by a preponderance of the evidence that Ulbricht did commission the murders. 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 uphold the sentence." (citations contained in link) 
https://en.wikipedia.org/wiki/Ross_Ulbricht