Written by: Aiying

The recent ruling by the U.S. Fifth Circuit Court of Appeals in the Tornado Cash case has caused a huge stir in the Web3 and privacy sectors. Whether immutable smart contracts qualify as 'property' and thus can be subject to sanctions is the core issue the court faced. The outcome of this ruling not only affects the specific decentralized tool Tornado Cash but also offers new insights and directions for the entire Web3 industry as it faces an increasingly complex global regulatory environment.

1. Case Background: The Game of Privacy Tools and Regulatory Power

Tornado Cash, a privacy protocol based on Ethereum, has long attracted attention for its ability to obscure transaction paths and provide a high level of privacy protection. However, this technological advantage has also made it a primary target for the U.S. Treasury's Office of Foreign Assets Control (OFAC). In August last year, OFAC announced sanctions against Tornado Cash, citing its use by North Korean hacker group Lazarus Group and other illegal actors for money laundering, allegedly hiding the sources of funds through this protocol. For details, see (U.S. Court Supports OFAC's Classification of Tornado Cash as 'Entity', Coin Center Loses Case) The Treasury's sanctions listed Tornado Cash's smart contracts on the 'Specially Designated Nationals and Blocked Persons List' (SDN List), plunging the 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 supporters, and has even been seen as a severe blow to open-source technology and programming freedom. Six users from the crypto ecosystem, including developers from Coinbase and core members of the Ethereum team, sued the U.S. Treasury as users, questioning the legal basis for its sanctions against Tornado Cash.

Ultimately, the U.S. Fifth Circuit Court of Appeals made a ruling in favor of the plaintiffs. The court held that Tornado Cash's immutable smart contracts cannot be classified as 'property' and therefore fall outside the jurisdiction of OFAC. The characteristics of immutable smart contracts are that they operate independently, are uncontrollable, and cannot be owned or exclusively used by anyone, which makes them incompatible with the 'property' attributes defined by traditional law.

2. The Far-reaching Impact of the Legal Ruling: Rekindling Web3 Companies' Exploration of Decentralization

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

Following this ruling, market confidence in privacy tools and decentralized protocols significantly increased. The native token of Tornado Cash, TORN, surged by over 380% shortly after the ruling. Although the overall privacy coin market fell back to less than a 2% increase within 24 hours, the market capitalization of the decentralized finance (DeFi) sector rose by 21.5% within a week, with Uniswap (UNI) up 11%, reaching an eight-month high, and Aave (AAVE) and Ethena (ENA) also rising by 8.6% and 23%, respectively, hitting their highest points in 2.5 years and five months. These figures indicate that market confidence in the legality and innovative capability of privacy tools has been rekindled.

For Web3 businesses, 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' of regulation, and finding a balance between regulatory compliance and user privacy is a challenge that all Web3 payment companies face. This ruling indicates that the U.S. judicial system tends to take a more cautious approach to the particularity and independence of emerging technologies rather than simply incorporating them into traditional financial regulatory frameworks. This is clearly an encouraging signal for Web3 companies looking to expand compliance services globally. It has reignited industry confidence in decentralized technology. Although the shadow of future regulation still exists, this ruling provides clearer legal boundaries and innovation space for developers, entrepreneurs, and investors exploring decentralized and privacy technologies.

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

However, the significance of this ruling extends beyond the United States. For global Web3 companies, understanding the relationship between technological neutrality and regulatory responsibility remains a core issue in compliance. In Europe, similar cases may face markedly different legal interpretations; in the Asian market, particularly in China and Singapore, government attitudes toward privacy tools and financial technologies tend to be stricter and more cautious.

It is foreseeable that this Tornado Cash ruling will trigger a rethinking among legislators and regulators around the world on similar issues. The balance between privacy rights and anti-money laundering, as well as the delineation of responsibilities between decentralized autonomous organizations (DAOs) and traditional financial institutions, are inevitable challenges faced by Web3 companies in their global expansion.

It is worth noting that the legislative time for the IEEPA was in 1977, long before the advent of the modern internet era, let alone blockchain and smart contract technology. The court's ruling reminds us that the current legal framework needs to keep pace 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 interpreting existing laws.

For Web3 companies, 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 in sustainable development. This is also what Aiying is striving to achieve.