Written by: Aiying

The recent ruling by the U.S. Fifth Circuit Court of Appeals regarding the Tornado Cash case has caused significant waves in the Web3 and privacy sectors. The core issue the court faced was whether immutable smart contracts qualify as 'property' and thus are subject to sanctions. The outcome of this ruling not only affects the specific decentralized tool Tornado Cash but also provides new insights and directions for the entire Web3 industry as it confronts an increasingly complex global regulatory environment.

I. Case Background: The Struggle Between Privacy Tools and Regulatory Power

Tornado Cash, a privacy protocol based on Ethereum, has long drawn attention for its ability to obfuscate transaction paths and provide high levels of privacy protection. However, this technological advantage has also made it a primary target of the U.S. Treasury's Office of Foreign Assets Control (OFAC). Last August, OFAC announced sanctions against Tornado Cash, citing its use by North Korean hacker group Lazarus Group and other illegal actors for money laundering, allegedly using the protocol to hide the sources of funds. For details, see (U.S. Court Supports OFAC's Designation of Tornado Cash as 'Entity', Coin Center Loses) The Treasury's sanctions action listed Tornado Cash's smart contracts on the Specially Designated Nationals and Blocked Persons List (SDN List) (Industry Impact Analysis and Risk Compliance Solutions - OFAC Announces Sanctions Against Tornado Cash), plunging this privacy protocol into a significant storm of public opinion and legal challenges.

However, this action has sparked widespread skepticism among the decentralized community and privacy advocates, even being regarded as a serious blow to open-source technology and programming freedom. Six users from the crypto ecosystem, including developers from Coinbase and members of the Ethereum core team, sued the U.S. Treasury as individuals, questioning the legal basis for its sanctions against Tornado Cash.

Ultimately, the U.S. Fifth Circuit Court of Appeals made a favorable ruling for the plaintiffs. The court determined that the immutable smart contracts of Tornado Cash could not be classified as 'property' and therefore fall outside the jurisdiction of OFAC. The characteristics of immutable smart contracts are that they operate autonomously, are uncontrollable, and cannot be owned or exclusively used by anyone, which makes them incompatible with the traditional legal definition of 'property'.

II. The far-reaching impact of the legal ruling: rekindling Web3 enterprises' exploration of decentralization

For Ethereum and the entire decentralized finance (DeFi) sector, this ruling is of epoch-making significance. Firstly, this ruling emphasizes the principle of technological neutrality: the technology itself and its neutral attributes should not be wholly denied due to the improper actions of some users. The court explicitly stated that while hackers may misuse Tornado Cash for money laundering, this does not mean that the existence of the entire protocol is illegal. Such a ruling logic provides some legal protection for privacy tools, decentralized finance platforms, and emerging payment technologies within the Web3 industry.

After this ruling, market confidence in privacy tools and decentralized protocols has significantly increased. The native token of Tornado Cash, TORN, surged by more than 380% post-ruling. Although privacy coins overall fell back to less than a 2% increase within 24 hours, the market capitalization of decentralized finance (DeFi) rose by 21.5% within a week, with Uniswap (UNI) up 11%, reaching an eight-month high, and Aave (AAVE) and Ethena (ENA) rising by 8.6% and 23%, respectively, marking the highest points in 2.5 years and five months. These data indicate a renewed confidence in the legitimacy and innovative potential of privacy tools in the market.

For Web3 enterprises, this also means that there may be greater freedom for innovation in providing privacy solutions in the future. Decentralized tools have always been a 'gray area' in regulation, and finding a balance between regulatory compliance and user privacy is a challenge faced by all Web3 payment enterprises. This ruling indicates that the U.S. judicial system tends to carefully consider the uniqueness and independence of emerging technologies rather than simply incorporating them into traditional financial regulatory frameworks. This is clearly an encouraging signal for Web3 enterprises aiming to expand compliance services globally. It has rekindled industry confidence in decentralized technology. Although the shadow of future regulation still looms, this ruling provides clearer legal boundaries and innovation space for developers, entrepreneurs, and investors exploring decentralized and privacy technologies.

III. Technological Neutrality and Compliance Challenges: Reflections from a Global Perspective

However, the significance of this ruling extends beyond the United States. For global Web3 enterprises, understanding the relationship between technological neutrality and regulatory responsibility remains a core issue in compliance. In Europe, similar cases may face completely different legal interpretations; in Asian markets, especially in China and Singapore, governments tend to have stricter and more cautious attitudes towards privacy tools and financial technologies.

It is foreseeable that the Tornado Cash ruling will trigger a global reevaluation by legislators and regulators regarding similar issues. The balance between privacy rights and anti-money laundering, as well as the division of responsibilities between decentralized autonomous organizations (DAOs) and traditional financial institutions, are unavoidable challenges for Web3 enterprises as they expand globally.

It is worth noting that the legislative timing of IEEPA dates back to 1977, long before the arrival of the modern internet age, let alone blockchain and smart contract technologies. The court's ruling reminds us that the existing legal framework needs to evolve with the times to effectively address the challenges posed by technology. The court specifically called on legislators to improve the legal gaps concerning emerging technologies, rather than attempting to fill regulatory loopholes by broadly expanding existing legal interpretations.

For Web3 enterprises, the key to compliance is not to blindly adapt to existing rules, but to engage in effective communication with regulators to promote the evolution and improvement of rules. Only in this way can the tension between technological innovation and legality find the best balance for sustainable development. This is also what Aiying is striving to achieve.