A landmark court ruling overturns sanctions against Tornado Cash, raising the possibility that the cryptocurrency mixing service may soon be available again, and reigniting the debate over privacy and regulation in the digital asset space.
The United States Court of Appeals for the Fifth Circuit ruled that the U.S. Treasury Department overstepped its authority when it sanctioned Tornado Cashās immutable smart contracts in 2022. The court determined that these specific smart contracts, due to their decentralized and unchangeable nature, did not constitute āpropertyā under the law, a key requirement for sanctions.
The Treasuryās Office of Foreign Assets Control (OFAC) originally imposed sanctions on Tornado Cash, alleging its use by North Korean hackers for money laundering. These sanctions effectively prohibited U.S. persons from interacting with the platform. However, the Fifth Circuitās decision reversed this, arguing that the immutable nature of the smart contracts made them incapable of being owned or controlled, and therefore not subject to government sanctions.
ConsenSys lawyer Bill Hughes explained the technical basis for the ruling. He highlighted the ātrusted setup ceremonyā that created the smart contracts, involving over a thousand volunteers and rendering the code permanently unalterable.Ā
This meant no single entity āownedā the code, and therefore, the government could not sanction it as property. Hughes also pointed out the ineffectiveness of the sanctions, noting that the smart contracts continued operating even after the OFAC designation, allowing anyone, including sanctioned entities, to use them.
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The court also dismissed OFACās argument that the smart contracts represented āservices,ā emphasizing the absence of human involvement in their operation. Instead, the court viewed them as tools, further solidifying its decision to overturn the sanctions.
The ruling, however, did not offer a blanket reprieve for Tornado Cash. The court clarified that other aspects of the platform, unrelated to the specific immutable smart contracts in question, could still be subject to sanctions.
Coinbase, which played a significant role in challenging the sanctions, lauded the decision. Paul Grewal, Coinbaseās Chief Legal Officer, hailed it as a āhistoric win for crypto and liberty,ā emphasizing the governmentās inability to sanction open-source code.Ā
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Coinbase CEO Brian Armstrong echoed this sentiment, expressing pride in the outcome and reaffirming the companyās commitment to defending individual freedom.
The crypto community reacted with widespread enthusiasm. Uniswap CEO Hayden Adams celebrated the victory of āimmutable smart contractsā over the Treasury Department. Jake Chervinsky, CLO of Valiant Fund, described the ruling as a āstunning victory,ā underscoring the legal precedent set regarding the nature of smart contracts.
The market responded dramatically, with Tornado Cashās TORN token surging by as much as 500%.

While the ruling clarifies the legal status of immutable smart contracts, it also raised complex questions about the future of decentralized technologies and the balance between privacy and regulation. The decisionās long-term impact on the DeFi landscape remains to be seen, but it undoubtedly marks a significant moment in the ongoing evolution of crypto regulation.
