The U.S. Treasury is exploring whether to embed identity verification directly into decentralized finance (DeFi) smart contracts, with critics warning that this move could rewrite the fundamental basis of permissionless finance.

Last week, the agency launched a consultation based on the "U.S. Stablecoin National Innovation and Establishment Act" (GENIUS Act), which was signed into law in July. The act directs the Treasury to assess new compliance tools to combat illegal financial activities in the crypto market.

One idea is to embed identity credentials directly into smart contracts. In practice, this means that DeFi protocols could automatically verify a user's government ID, biometric credentials, or digital wallet certificate before allowing transactions to proceed.

Supporters argue that building know your customer (KYC) and anti-money laundering (AML) checks into blockchain infrastructure can simplify compliance and keep criminals at bay.

Fraser Mitchell, Chief Product Officer at AML provider SmartSearch, told Cointelegraph that such tools could "lift the veil on anonymous transactions, which are precisely what make these networks so attractive to criminals."

"Real-time monitoring of suspicious activities can make it easier for platforms to mitigate risks, detect, and ultimately prevent money launderers from using their networks to clean the proceeds of some of the world's most serious crimes," Mitchell said.

Mitchell acknowledged the privacy trade-offs but believes solutions exist. "Only the necessary data for monitoring or regulatory audits should be stored, and everything else should be deleted. Any stored data should be encrypted at the row level to reduce the risk of significant breaches."

However, critics argue that the proposal risks hollowing out the core of DeFi. Mamadou Kwidjim Toure, CEO of Ubuntu Tribe, likened the plan to "installing cameras in every living room."

"On the surface, this seems like a clever compliance shortcut. But you are turning a neutral, permissionless infrastructure into a system controlled by government-approved identity credentials. This fundamentally changes the intent of DeFi," Toure told Cointelegraph.

He warned that if biometric or government IDs are tied to blockchain wallets, "every transaction could potentially be permanently traced back to a real-world individual. You lose pseudonymity, and in turn, the ability to transact without surveillance."

For Toure, the risks go beyond compliance. "Financial freedom relies on the right to private economic life. Embedding identity verification at the protocol level erodes this and creates dangerous precedents. Governments could scrutinize transactions, blacklist wallets, or even automatically tax through smart contracts."

Another concern is exclusion. Billions of people globally still lack formal identification. If DeFi protocols require government-issued credentials, entire communities, immigrants, refugees, and the unbanked risk being shut out.

"This could limit access for users who prefer anonymity or cannot meet ID requirements, undermining the democratic nature of DeFi," Toure said.

Data security is also a flashpoint. Associating biometric databases with financial activities could make hacks more catastrophic, exposing both funds and personal identities in a single breach.

Critics emphasize that the choice is not a binary opposition between a criminal paradise and mass surveillance. Privacy-preserving tools like zero-knowledge proofs (ZKP) and decentralized identity (DID) standards offer ways to verify credentials without exposing full identities.

Through ZKP, users can prove they are not on a sanctions list or are over 18 without revealing their identity. The DID framework allows users to hold verifiable credentials and disclose them selectively. "Users hold verifiable credentials and disclose them selectively, rather than relying on static government IDs," Toure said.

Related: U.S. House Adds CBDC Ban to Must-Pass Defense Bill

Original article: “U.S. Treasury's DeFi ID Plan 'Is Like Installing Cameras in Every Living Room'”

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