The motion, filed by Brian Klein, claims the indictment of Griffith doesn't "specify any alleged overt facts," and contains no actual allegation of fact.
The U.S. Treasury Department Office of Foreign Asset Control has added three Russian nationals and a host of cryptocurrency addresses to its sanctions list.
Prosecutors appear to have a strong case against Virgil Griffith, the ethereum developer charged with conspiring to aid North Korea, legal experts say.
The U.S. Treasury's OFAC has put bitcoin and litecoin addresses of three Chinese nationals on its sanctions list, the second time the agency has blacklisted crypto wallets.