The Fifth Circuit has just opined that the smart contracts that comprise the Tornado Cash cryptocurrency tumbler are "not property because they are not capable of being owned", and thus cannot be sanctioned by OFAC.

The six plaintiffs-appellants are users of Tornado Cash. They argue that Tornado Cash’s inclusion on the SDN list exceeded OFAC’s statutory authority. The district court disagreed, granting summary judgment to the Department and finding Tornado Cash subject to OFAC’s sanctioning authority. Van Loon and the other plaintiffs appealed, making the same principal argument here—that Tornado Cash’s open-source, self-executing software is not sanctionable under the Act (as opposed to the rogue persons and entities who abuse it). OFAC’s concerns with illicit foreign actors laundering funds are undeniably legitimate. Perhaps Congress will update IEEPA, enacted during the Carter Administration, to target modern technologies like crypto-mixing software. Until then, we hold that Tornado Cash’s immutable smart contracts (the lines of privacy-enabling software code) are not the “property” of a foreign national or entity, meaning (1) they cannot be blocked under IEEPA, and (2) OFAC overstepped its congressionally defined authority.
The immutable smart contracts at issue in this appeal are not property because they are not capable of being owned. More than one thousand volunteers participated in a “trusted setup ceremony” to “irrevocably remov[e] the option for anyone to update, remove, or otherwise control those lines of code.” And as a result, no one can “exclude” anyone from using the Tornado Cash pool smart contracts. In fact, because these immutable smart contracts are unchangeable and unremovable, they remain available for anyone to use and “the targeted North Korean wrongdoers are not actually blocked from retrieving their assets,” even under the sanctions regime. Simply put, regardless of OFAC’s designation of Tornado Cash, the immutable

Full opinion

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