The ability of Circle to freeze USDC wallets when deemed necessary is facing renewed criticism for perceived sluggishness in halting stolen funds and excessive scope during a civil matter involving business accounts. Allegations from on-chain investigator ZachXBT, detailed in the ‘Circle Files,’ suggest inconsistent application of these powers by Circle, the issuer of USDC.
Since 2022, Circle’s delay in freezing wallets in 15 cases involving over $420 million in allegedly illicit funds contrasts with its broad freeze affecting 16 operational business wallets caught up in a sealed civil matter. These wallets were linked to exchanges, casinos, and forex services that ZachXBT argued had no connection.
The significance of this lies in USDC’s role as fundamental infrastructure for exchanges, payments, and DeFi, raising questions about the predictability, speed, and reversibility of Circle’s freeze actions. Although at least one blocked wallet from Goated.com was later unfrozen, it underscores concerns over how meticulously Circle reviews addresses before blocklisting.
This sequence of ‘delayed theft response but broad civil action’ is problematic at a time when USDC held about $77.2 billion in circulation as of April 3, representing approximately 24.5% of the nearly $316.8 billion total stablecoin market. The Drift exploit highlighted by ZachXBT involved over $280 million in USDC moving across more than 100 transactions within six hours.
Circle’s control mechanism includes a blocklist feature embedded within its EVM stablecoin contract, allowing it to prevent certain addresses from transferring or receiving tokens. This system is both pausable and upgradeable. The Access Denial Policy, which governs when freezing occurs, limits this action to scenarios threatening network security or compliance with valid legal orders.
Circle’s legal documents provide more latitude than the blocklist policy suggests, allowing discretionary blocking of addresses suspected of illegal activities. However, these terms also clarify that Circle is not obliged to verify the origins of user balances.
The pressure point arises when market participants accept stringent controls and slow legal processes but are unsettled by inconsistent enforcement speed across different contexts. This issue has become an infrastructure risk story for Circle, especially with the GENIUS Act establishing a US regulatory framework for payment stablecoins like USDC.
The future of USDC governance hinges on transparency in freeze reviews and response times to live incidents. Successful clarification and faster coordination could restore confidence and increase USDC circulation to $82 billion-$90 billion, maintaining its market share between 25%-27%. Conversely, further slow responses or overreaching freezes may prompt diversification away from Circle’s control, potentially reducing USDC circulation to $68 billion-$75 billion with a 20%-23% market share.
Ultimately, the next live stress event will be critical. A faster theft response and more transparent freeze explanations could transform this controversy into a governance correction. Failure to do so may lead businesses to continue using USDC while discreetly reducing dependence on it.