Yigit Taha OZTURK 
One of the most significant developments of 2025 has occurred today. On March 21, 2025, the U.S. Department of the Treasury’s Office of Foreign Assets Control (OFAC) officially announced that several Ethereum wallet addresses associated with Tornado Cash, as well as its official website, have been removed from the Specially Designated Nationals (SDN) List.
Which Addresses Were Removed?
According to the updated SDN list, the following Ethereum wallet addresses are no longer subject to sanctions:
0x12D66f87A04A9E220743712cE6d9bB1B5616B8Fc0x47CE0C6eD5B0Ce3d3A51fdb1C52DC66a7c3c29360x910Cbd523D972eb0a6f4cAe4618aD62622b39DbF0xA160cdAB225685dA1d56aa342Ad8841c3b53f2910xD4B88Df4D29F5CedD6857912842cff3b20C8Cfa
Additionally, Tornado Cash’s official website has also been removed from the sanctions list. This decision has sparked widespread attention in the cryptocurrency industry and has been welcomed by many developers and investors alike.
What is Tornado Cash?
Tornado Cash is a decentralized privacy protocol operating on the Ethereum blockchain. It allows users to make anonymous transactions by obfuscating transaction details and breaking on-chain links between source and destination addresses. The protocol uses zk-SNARKs (Zero-Knowledge Succinct Non-Interactive Arguments of Knowledge) technology to guarantee privacy and anonymity.
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While Tornado Cash was initially designed for privacy protection, it was also exploited for illicit purposes, including money laundering activities allegedly linked to North Korean hacker groups such as Lazarus. In 2022, the U.S. Treasury Department sanctioned Tornado Cash for providing a platform that facilitated these illegal transactions.
What is OFAC?
OFAC (Office of Foreign Assets Control) is an agency under the U.S. Department of the Treasury. Its role is to enforce economic and trade sanctions in support of U.S. national security and foreign policy objectives. OFAC targets terrorists, drug traffickers, cyber threats, and individuals involved in illicit financial activities through its sanctions programs.
In 2022, OFAC designated Tornado Cash on its sanctions list, effectively banning U.S. persons from interacting with the protocol. However, this latest update shows a degree of flexibility in regulatory approaches, as certain addresses and the website have now been delisted.
Potential Impact on the Crypto Ecosystem
The partial lifting of sanctions on Tornado Cash addresses may set a precedent for other privacy-oriented projects. However, it’s important to note that this is not a complete removal of sanctions, but rather a specific delisting of selected wallet addresses and the website. Regulatory agencies continue to evolve their approaches to cryptocurrency projects, offering both new opportunities and risks for the industry.
This development is seen as a positive step by many in the blockchain space, potentially signaling a shift toward more nuanced regulation of privacy protocols.
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