The U.S. Treasury Department's sanctions watchdog, the Office of Foreign Assets Control (OFAC), has blacklisted a bitcoin and an ether address it has linked to sanctions evasion.

According to a press release, Igor Zimenkov and his son Jonatan are part of "a broad network of individuals and entities" that tried to sell defense equipment to "third-country governments." Jonatan Zimenkov, a Russian national, was tied to the two addresses, which in turn were linked to both his father and Rosoboroneksport OAO, according to OFAC. The company is Russia's intermediary for arms exports, according to its website.