Frequently Asked Questions

1076. What is prohibited as a result of OFAC’s designation of Tornado Cash?

Answer

On August 8, 2022, OFAC designated the entity Tornado Cash for facilitating the laundering of proceeds of cybercrimes, including those committed by the Lazarus Group, a North Korea state-sponsored hacking group that was sanctioned in 2019.  As described in FAQs 561 and 562, OFAC may include as identifiers on the Specially Designated Nationals and Blocked Persons List (SDN List) specific virtual currency wallet addresses associated with blocked persons.  As part of the SDN List entry for Tornado Cash, OFAC included as identifiers certain virtual currency wallet addresses associated with Tornado Cash, as well as the URL address for Tornado Cash’s website.  The Tornado Cash website has since been deleted from the Internet, but it currently remains available through certain Internet archives.

While engaging in any transaction with Tornado Cash or its blocked property or interests in property is prohibited for U.S. persons, interacting with open-source code itself, in a way that does not involve a prohibited transaction with Tornado Cash, is not prohibited.  For example, U.S. persons would not be prohibited by U.S. sanctions regulations from copying the open-source code and making it available online for others to view, as well as discussing, teaching about, or including open-source code in written publications, such as textbooks, absent additional facts.  Similarly, U.S. persons would not be prohibited by U.S. sanctions regulations from visiting the Internet archives for the Tornado Cash historical website, nor would they be prohibited from visiting the Tornado Cash website if it again becomes active on the Internet.

Date Released
September 13, 2022