Tether Freezes $514M USDT in 376 Addresses Last Month

Tether, the issuer of the USDT stablecoin, has frozen more than 514 million dollars worth of its tokens across 376 addresses on the Ethereum and Tron blockchains over the past 30 days, according to on-chain data from BlockSec.

The majority of the activity targeted Tron, where approximately 506 million USDT in 333 addresses was blocked, compared to 8.77 million across 43 addresses on Ethereum. These freezes prevent funds from being transferred or used, rendering the tokens effectively unusable through smart contract functions controlled by Tether.

This recent action continues a pattern of enforcement. Throughout 2025, Tether blacklisted 4,163 unique addresses and froze 1.26 billion USDT, with more than half, around 698 million, later destroyed via a contract function. Only 3.6 percent of sanctioned addresses have been removed from the blacklist. Over the 2023 to 2025 period, the company froze about 3.3 billion USDT across 7,268 addresses, exceeding similar efforts by rival stablecoin issuer Circle, which reported freezing 4.2 billion over three years, including 3.5 billion since 2023.

Notable cases this year include an April operation in coordination with the U.S. Treasury's...