The Office of Foreign Assets Control of the United States Department of the Treasury has added two cryptocurrency wallets allegedly connected to a Russian sanctions evasion network as part of its list of Specially Designated Nationals.

In a Feb. 1 announcement, OFAC said it had added one Bitcoin (BTC) address and one Ether (ETH) address to its list of sanctioned entities as part of a move to “methodically and intensively target sanctions evasion efforts around the globe.” Treasury said it would impose “full blocking sanctions” on 22 individuals, including Jonatan Zimenkov, a Russian national with access to at least one BTC wallet and one ETH wallet.