The U.S. Department of the Treasury sanctioned six Ethereum wallet addresses on Wednesday as part of a broad action against a financial network accused of laundering money for the Sinaloa Cartel using cryptocurrency. The Office of Foreign Assets Control (OFAC) added the addresses to its Specially Designated Nationals (SDN) list, targeting individuals who allegedly converted proceeds from U.S. fentanyl sales into digital assets.
"Treasury will continue to target terrorist cartels and their fentanyl trafficking networks to protect our communities and keep America safe,” Treasury Secretary Scott Bessent said in a statement. The action was a coordinated effort involving the Homeland Security Task Force and the Drug Enforcement Agency, highlighting a multi-agency focus on the intersection of crypto and illicit finance.
The sanctions target a network led by Armando de Jesus Ojeda Aviles, who OFAC identifies as the primary money launderer for the Chapitos faction of the cartel. Five of the six sanctioned Ethereum addresses are directly linked to him. While most of the addresses have been dormant for years, on-chain data shows one wallet sent $894 in Tether (USDT) on April 27. The sanctions also designated other individuals, a restaurant in Mexico, and several other entities involved in the network.
This enforcement action underscores the increasing use of cryptocurrency by transnational criminal organizations and the corresponding focus from U.S. regulators. For virtual asset service providers, the designation of specific crypto addresses increases compliance risks, requiring exchanges and wallet providers to actively screen against the SDN list to avoid facilitating sanctioned transactions. The move follows a 2025 designation of the Sinaloa Cartel as a Foreign Terrorist Organization and a separate $10 million crypto seizure by the DEA last year, signaling a sustained U.S. effort to disrupt the cartel's financial operations on the blockchain ahead of potential new regulations.
The sanctions highlight the methods cartels use to move funds across borders. According to the Treasury, Ojeda Aviles' network collected bulk cash from drug sales in the U.S. and then converted it into cryptocurrency. This digital money was then transferred to the Sinaloa Cartel in Mexico, bypassing the traditional financial system.
This method poses a significant challenge for law enforcement but also creates a permanent ledger of transactions on the blockchain. The public nature of blockchains like Ethereum allows investigators to trace funds, as demonstrated by the analysis of the sanctioned addresses. One address, for example, had been inactive for over a year before suddenly moving nearly $900 in USDT, a dollar-pegged stablecoin, in late April.
The action is part of a wider U.S. government strategy to combat the flow of illicit fentanyl, which the DEA identifies as the deadliest drug in the country. By targeting the financial networks that enable drug trafficking, authorities aim to disrupt the cartels' operations. The sanctions block the designated individuals and entities from accessing the U.S. financial system and prohibit Americans from dealing with them.
This move also puts pressure on the cryptocurrency industry to strengthen its anti-money laundering (AML) and know-your-customer (KYC) controls. As sanctioned entities and individuals may attempt to use various crypto platforms to move assets, exchanges and other service providers are on the front line of enforcement. The inclusion of specific Ethereum addresses on the OFAC list serves as a direct warning to the industry to police transactions linked to these wallets.
This article is for informational purposes only and does not constitute investment advice.
