US Treasury Sanctions Crypto Mixing Service Tornado Cash

In its first on-chain DeFi protocol sanction, the US Treasury Department added Tornado Cash to its blocked list

article-image

Source: DALL·E

share

key takeaways

  • Tornado cash is now on the Treasury’s list of services US individuals cannot use
  • The sanctions come as money moved via crypto mixing services increased in 2022

In its first on-chain decentralized finance protocol sanction, the US Treasury Department added decentralized cryptocurrency mixing service Tornado Cash to its blocked list, according to documents released Monday. 

The Office of Foreign Asset Control added Tornado Cash and 45 related Ethereum wallet addresses to the Specially Designated Nationals (SDN) list, meaning that their “assets are blocked and U.S. persons are generally prohibited from dealing with them,” according to the Treasury Department.

US Secretary of State Anthony Blinken initially mistakenly identified Tornado Cash as “a U.S.-sanctioned, DPRK state-sponsored hacking group, used by the DPRK to launder money,” in a subsequently-deleted tweet. 

Secretary Blinken later clarified that Tornado Cash was merely used by a North Korean hacking group to launder money. 

Loading Tweet..

The sanctions come as 2022 has seen an uptick in the use of crypto mixing services, which allow users to conceal the transaction history of certain cryptocurrencies by pooling and mixing them together with other users’ funds. 

The 30-day moving average of value received by mixers reached an all-time high of nearly $52 million worth of crypto on April 19, according to a report by Chainalysis published in July. This is roughly double the volumes seen at the same time in 2021.

Mixers have also come under increased scrutiny as concerns about sanctioned Russian entities using crypto to circumvent the rules mounts. 

Read more: Coin Mixers and Privacy Coins: Can They Resist Censorship?

This is a developing story.

Updated Aug. 8, 2022, 12:50 pm ET.


Get the news in your inbox. Explore Blockworks newsletters:

Tags

Decoding crypto and the markets. Daily, with Byron Gilliam.

Upcoming Events

Old Billingsgate

Mon - Wed, October 13 - 15, 2025

Blockworks’ Digital Asset Summit (DAS) will feature conversations between the builders, allocators, and legislators who will shape the trajectory of the digital asset ecosystem in the US and abroad.

recent research

Research Report Templates.png

Research

Content Delivery Networks (CDNs) represent low-hanging fruit in a massive market ripe for Web3-driven disruption. The global CDN market was valued at ~$28B in 2024, and is projected to surpass $140B by 2034, (18.75% CAGR) underscoring the immense demand for efficient content delivery.

article-image

Long before BlackRock’s ETF, there was the Winklevoss Bitcoin Trust

article-image

Mainnet goes live with a 16-node federation, promising five-second block times, low fees and Bitcoin-native DeFi

article-image

Sponsored

WalletConnect Certified is not just a recognition program, it’s a movement to improve how users onboard, transact, and engage across the onchain ecosystem

article-image

In crypto investing, quantity has a quality all its own.

article-image

REX and Osprey prep to launch their Solana staking ETF

article-image

A 40% allocation to crypto today is safer than a 1% allocation was in 2021, Ric Edelman argues