Washington twist: US Treasury admits crypto mixers have legal uses

The U.S. Treasury Department has acknowledged legitimate uses for cryptocurrency mixer platforms, marking a shift after years of restrictions.

After a period marked by restrictive actions against platforms focused on financial privacy, such as Tornado Cash and Samourai Wallet, the Treasury Department has formalized a more balanced stance. 

In a recent report submitted to Congress, the federal agency admitted that cryptocurrency mixing tools or mixersdesigned to anonymize transactions, They serve legitimate and necessary purposes in modern markets.

For experts and the crypto community, this recognition is crucial, as it arises in a context where the fight against illicit financing, which has been the absolute priority of the current administration, has put several market platforms in check. 

The official document emphasizes that, in a public ledger network like blockchain, the complete exposure of data can compromise the security of individuals and companies. Therefore, according to the report, the possibility of concealing the origin and destination of funds does not always stem from a desire to evade the law, but rather from the protection of sensitive informationsuch as personal assets, corporate payments, or donations to specific causes. According to experts, this analytical shift proposes a new roadmap for coexistence between state surveillance and the right to financial privacy.

Privacy and regulation: a new balance in the crypto era

El Valid identity document presented under the guidelines of the Genius Act of 2025 It establishes a fundamental technical distinction for the future of the crypto industry. 

According to the Treasury Department's analysis, privacy in decentralized networks is a feature that can coexist with regulatory compliance if appropriate safeguards are implemented. The report notes that, as the use of digital assets becomes integrated into everyday consumption habits, users require mechanisms to prevent the public tracking of their financial transactions.

For the crypto industry, this statement represents a validation of identity preservation technology. The Treasury indicates that asset mixer services, both custodial and non-custodial, allow commercial transactions and charitable operations to remain outside the reach of unauthorized third parties. However, the agency clarifies that this legitimacy does not exempt the platforms from responsibility. Therefore, it proposes that privacy tools incorporate record-keeping systems or internal audits that allow authorities to intervene only in cases of confirmed criminal activity.

The scope of these recommendations for the cryptocurrency and digital asset sector is broad. The report suggests that Congress should work to clarify anti-money laundering obligations for the Decentralized Finance (DeFi) sector, but without stifling technological innovation. The Treasury even urges the exploration of digital identity tools that protect personal data while complying with international transparency standards, seeking a balance between national security and individual sovereignty over financial information.

In other words, the Treasury believes that, regardless of the privacy technology used, anti-money laundering (AML) and counter-terrorist financing (CFT) controls must be effectively enforced.

The Treasury is reassessing the need for privacy in the crypto world

For years, the U.S. Treasury Department's strategy regarding the use of cryptocurrency anonymity tools relied on direct sanctions. One of the most notorious examples was Tornado cashA protocol that enables private blockchain transactions was blacklisted by the Office of Foreign Assets Control in 2022. At the time, authorities argued that the mixing service facilitated money laundering operations linked to international cybercrime groups, leading to the arrest and prosecution of its developers, including Roman Storm.

Another case that marked that period was that of Samourai Walletwhose legal persecution solidified the idea that any software dedicated to protecting financial privacy was, in itself, cause for suspicion. 

For years, federal agencies have cited it as a common way to move funds obtained through hacks or ransomware attacks. However, legal challenges brought by digital rights advocates and blockchain companies have sparked a new debate about the limits of that policy. An appeals court has called into question the Treasury's ability to penalize open-source software that is not under the control of a specific entity.

This tension between the legal framework and technological innovation prompted the government to revise its position. In its latest report, the Treasury acknowledges that technology is not inherently moral and that penalizing it across the board could harm law-abiding citizens and businesses. The new approach distinguishes between those who use these tools to conceal crimes and those who use them to protect sensitive information, process payroll, or simply safeguard their privacy in the digital environment.

Towards a legal architecture for protected digital assets

US financial authorities appear to have devised a new strategy regarding blockchain technology. Instead of restricting privacy, they are seeking to regulate it with more precise legal mechanisms. 

In its report, the Treasury Department has proposed to Congress the creation of regulations that would allow for the temporary freezing of assets deemed suspicious, without dismantling systems that protect user confidentiality. This would provide financial institutions with a buffer while investigations proceed, mitigating friction with the rapid development of decentralized networks.