The U.S. Department of the Treasury said in a new report to Congress that transaction anonymization is not always associated with criminal activity.

Report overview

In the document titled "Innovative Technologies for Countering Illicit Finance," the Treasury acknowledged legitimate privacy interests among cryptocurrency users.

The regulator noted that ordinary citizens may use mixers to protect financial confidentiality, including concealing personal savings, business payments, or charitable donations.

Regulatory distinctions

The report draws a clear line between custodial, centralized services and noncustodial, decentralized mixers, describing different implications for oversight and compliance.

According to the Treasury, custodial mixers are considered more amenable to regulatory control because they can provide transaction data when required by law enforcement.

Privacy recognition and remaining risks

The department recognizes that as cryptocurrency use for everyday payments grows, users’ desire to preserve anonymity is natural and legally defensible in many contexts.

At the same time, the Treasury warns that decentralized mixers used on darknet markets remain a significant money‑laundering risk and are often exploited by hacking groups.

• Privacy acknowledged: The Treasury accepts that some anonymization serves lawful privacy goals for routine financial activity.
• Service split: Custodial mixers may offer traceability, while noncustodial solutions pose greater enforcement challenges.
• Threats persist: Decentralized mixers are repeatedly abused in illicit schemes, including by groups from North Korea.

The report frames a nuanced position that balances user privacy rights with continued concern over illicit finance enabled by certain mixing services.