What happened to Zama's frozen USDC funds?

A US court lifted a temporary freeze on approximately $12.5 million in USDC held within Zama's confidential USDC (cUSDC) smart contract. Following the decision, the protocol said its cUSDC contract and underlying USDC returned to normal operation.

Why was Zama's USDC frozen?

The freeze resulted from a temporary restraining order linked to a legal dispute involving stakeholders of an unrelated project called Overnight Finance. According to Zama, the protocol was not a party to the case, but Circle froze the funds after receiving the court order.

Zama is a privacy-focused blockchain protocol that develops confidential financial infrastructure. Its technology allows transaction amounts and balances to remain encrypted while maintaining visibility of sender and recipient addresses.

cUSDC is Zama's confidential version of USDC designed to provide privacy features for stablecoin users. The protocol uses encryption technology to conceal balances and transaction amounts while maintaining compliance capabilities.

Why did the court lift the freeze?

According to Zama executives, the court determined that freezing the entire smart contract pool caused disproportionate harm to uninvolved users. The court accepted arguments that the disputed account could be isolated without freezing all funds in the contract.

What compliance changes is Zama introducing?

Zama plans to accelerate its compliance roadmap by implementing automatic enforcement of actions taken by underlying asset issuers. If Circle freezes a USDC address, the corresponding confidential USDC associated with that address would also be frozen.

Why is this case important for DeFi protocols?

The incident highlights risks faced by decentralised applications that hold centralised stablecoins such as USDC. Protocols including decentralised exchanges, lending platforms and bridges could potentially face similar disruptions if courts order broad asset freezes.

Does this create tension between privacy and compliance?

Yes. The case illustrates the ongoing challenge of balancing user privacy with legal and regulatory requirements. Zama argues that privacy-preserving protocols can still comply with lawful requests through targeted enforcement mechanisms.

Image for illustrative purposes only. Not a real photo.

Zama speeds up compliance plans after USDC freeze lifted

Written by Heidi Cuthbert Published Jun. 3 2026Last Updated Jun. 3 2026

Privacy-focused blockchain protocol Zama said it will accelerate its compliance roadmap after a US court lifted a temporary freeze on approximately $12.5 million in USDC held within its confidential USDC smart contract.

The freeze stemmed from a court order linked to a legal dispute involving stakeholders of an unrelated project, Overnight Finance, prompting Circle to freeze the funds despite Zama not being a party to the case.

“The same court has now lifted the freeze, determining that it was unwarranted,”

Zama co-founder Rand Hindi said, adding that the protocol's cUSDC contract and underlying USDC had returned to normal operation.

Zama said the incident exposed risks faced by decentralised applications that hold centralised stablecoins, with chief operating officer Jeremy Bradley warning that exchanges, lending protocols and bridges could face similar disruptions from broad freeze orders.

In response, the protocol plans to introduce automatic enforcement of compliance actions taken by stablecoin issuers, meaning frozen USDC addresses would automatically trigger freezes of corresponding confidential USDC balances.

The company also intends to establish a compliance council and integrate additional compliance and transaction-monitoring tools to strengthen institutional confidence in its privacy-preserving infrastructure.

Despite the disruption, Zama said it remains committed to launching its confidential USDC product later this month and plans to shield $5 million of USDC from its own treasury as part of the rollout.