Privacy-focused blockchain networks face a compliance challenge after a recent enforcement action on Zama Chain demonstrated the difficulty of implementing targeted stablecoin freezes without disrupting innocent users. Circle was required to freeze specific illicit funds on Zama Chain in response to a court order, but the platform's commingled fund structure forced the stablecoin issuer to blacklist the entire cUSDC contract, impacting all users who had locked funds in the contract. Jan Philipp Fritsche, founder of Bermuda, framed the issue as part of a broader challenge for privacy-preserving networks, stating that infrastructure institutions are adopting is incapable of handling basic compliance processes without creating major disruption.
Circle Froze Entire Zama Chain cUSDC Contract Per Court Order
A recent enforcement action involving Zama Chain highlighted how technical design choices can turn targeted restrictions into broader disruptions. Circle was required to freeze specific illicit funds on Zama Chain in response to a court order. However, Zama Chain does not provide a mechanism to freeze specific funds because funds on the platform are commingled.
"Circle was forced to blacklist the entire cUSDC contract on Zama Chain, impacting anyone (including innocent users) who locked funds in the contract," Fritsche said in an interview with Bitcoin.com News.
Fritsche emphasized that this represents a serious problem: "the privacy-preserving infrastructure (like Zama Chain and Canton) that institutions are adopting are incapable of handling basic compliance processes without creating a major disruption."
Privacy Protocols Lack Selective Freeze Mechanisms
At the center of the issue is a technical limitation. If stablecoin issuers cannot distinguish targeted actors from other users within a privacy system, enforcement may shift from precise intervention to broad restriction.
"The biggest limitation is that most privacy protocols do not enable stablecoins to selectively freeze adversarial actors; as a result, stablecoins don't have any choice but to either block all users or none," Fritsche explained.
This creates a block-all-or-block-none dilemma where issuers face a blunt compliance choice with no middle ground for targeted action.
Compliance Heuristics Misidentify Legitimate Activity
Compliance systems often rely on behavioral analysis to identify activity that appears unusual or risky. Those tools may help flag potential threats, but they do not provide certainty and can leave lawful users exposed to mistaken assessments.
"Secondly, the heuristics that platforms use to monitor for illicit activity are, unfortunately, imperfect. They are educated guesses," Fritsche remarked.
Because these assessments are based on probability, they can turn unusual but legitimate behavior into a compliance concern. That uncertainty becomes especially consequential when a flagged pattern leads to restrictions on access to funds.
Sophisticated Criminals Circumvent Asset Freezes
The effectiveness of freezes remains in question. Fritsche argued that advanced criminal actors are often capable of adapting around asset restrictions.
"It should also be noted that freezing is incredibly inefficient. Sophisticated threat actors like North Korean hackers know how to get around it," he stated.
The concern is not only that legitimate users can be affected, but also that the most sophisticated targets may still evade the controls designed to stop them.
Stricter Enforcement Rules May Harm Legitimate Users
Fritsche warned that the industry could enter a cycle in which compliance burdens increase while fraud and cybercrime persist. Ineffective enforcement can create pressure for more restrictive rules, but additional restrictions do not necessarily produce better results.
"Another major danger I see as a consequence of ineffective enforcement is a vicious cycle of stricter rules and worse enforcement, as we already see in traditional finance," he said. "Stricter and stricter rules that harm legitimate users, sabotage the UX, yet do not prevent actual fraud or crime."
Such an outcome would leave legitimate participants facing a worse user experience without meaningfully reducing illicit activity.
Fritsche Advocates Prevention Over Reactive Freezes
Rather than relying primarily on freezes after suspicious activity has occurred, Fritsche called for stronger emphasis on prevention and application security. That approach would shift the focus from reacting to illicit transfers toward reducing the vulnerabilities that allow attacks to happen.
Despite the expansion of compliance guidelines and enforcement frameworks, global cybercrime continues to rise, with annual damages projected to surpass $10.5 trillion, he noted.
"We need to prevent crime before it happens and build more secure applications, rather than freezing money based on heuristics," Fritsche stated.
Frequently Asked Questions
What happened when Circle froze funds on Zama Chain?
Circle was required to freeze specific illicit funds on Zama Chain in response to a court order, but because Zama Chain does not provide a mechanism to freeze specific funds and funds on the platform are commingled, Circle was forced to blacklist the entire cUSDC contract on Zama Chain, impacting all users including innocent ones who locked funds in the contract.
Why do privacy protocols struggle with selective freezes?
Most privacy protocols do not enable stablecoins to selectively freeze adversarial actors because of their technical design. As a result, stablecoins have no choice but to either block all users or none, creating a compliance limitation where targeted enforcement is not possible without affecting innocent users.
What alternative does Jan Philipp Fritsche propose to asset freezes?
Fritsche advocates for stronger emphasis on prevention and application security rather than relying primarily on freezes after suspicious activity has occurred. He stated that the industry needs to prevent crime before it happens and build more secure applications, rather than freezing money based on heuristics, especially as global cybercrime damages are projected to surpass $10.5 trillion annually.
