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Tether has blacklisted 371 addresses and frozen approximately $515 million worth of USDT across the Ethereum and Tron networks over the past 30 days, according to new data.
Data from Blocksec’s USDT Freeze Tracker shows that Tether blacklisted 371 addresses on Ethereum and Tron combined. Of those, 329 freeze actions were executed on the Tron network, while 42 occurred on Ethereum.
The distribution reflects USDT’s heavier usage on Tron, which has become the dominant chain for stablecoin transactions in emerging markets, particularly across Southeast Asia, Latin America, and Africa.
Tether’s ability to freeze funds is tied to a centralized administrative key embedded in the USDT smart contract. When an address is flagged—typically at the request of law enforcement agencies or after verified evidence of theft, fraud, or sanctions violations—Tether can unilaterally prevent that wallet from moving its funds.
The mechanism has been used in cooperation with agencies including the U.S. Department of Justice and Europol.
Critics argue that the centralized freeze capability contradicts the self-custody ethos of crypto, where users are expected to have full sovereignty over their assets. Tether and its supporters say the tool is necessary to combat money laundering, ransomware payouts, and other large-scale financial crime.
The scale of the activity—freezing over half a billion dollars in a single month—suggests either a surge in enforcement requests, a broadened internal compliance sweep, or both. Blocksec’s data does not specify how many of the 371 addresses were frozen at direct government request versus through Tether’s internal protocols.
Tron has faced particular scrutiny in this context. The network, founded by Justin Sun, has been repeatedly flagged by blockchain analytics firms for high volumes of illicit fund flows. Tether has not issued a public statement on the 30-day freeze totals as of this writing.

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