Nearly eight months after being sentenced to life in prison for his role in the operation of the now-defunct online black market Silk Road, Ross Ulbricht is seeking a new trial.

In a new filing submitted to the US Court of Appeals for the Second Circuit, Ulbricht’s defense – which declared its intent to appeal in June – argued that the court hid key evidence, particularly the actions of federal agents Carl Mark Force IV and Shaun Bridges amid the US government’s investigation of the Silk Road.

The defense also questioned the legality of some of the searches and seizures conducted during the federal investigation, and said that Ulbricht’s rights to due process and a fair trial had been denied.

Ulbricht was sentenced to life in prison in May after being convicted in February of last year. He was found guilty of narcotics trafficking, money laundering and computer hacking charges.

The brief for defendant-appellant can be found below:

BRIEF FOR DEFENDANT-APPELLANT