US Treasury explores on chain ID checks for DeFi under GENIUS Act review

August 17, 2025 — The U.S. Treasury opened a public consultation on using digital identity in decentralized finance, including the idea of baking credential checks directly into smart contracts to curb illicit finance.

What Treasury is considering

Treasury is studying how identity credentials government IDs, biometrics, or portable attestations could plug into DeFi. In one model, a contract would check a user’s credential first, then execute the trade. That shifts KYC/AML from front-end apps into the protocol itself.

Why it matters

Built-in checks could help spot money laundering, sanctions evasion, and terror financing before funds move. They may also lower compliance costs for both fintechs and DeFi teams. However, the approach raises tough questions about data privacy, censorship risk, and how to keep systems open and composable.

Process and timing

The consultation invites feedback on technical designs, privacy safeguards, and implementation trade-offs. After comments close on Oct. 17, 2025, Treasury will report to Congress and may issue guidance or propose rules.

Banking industry pushback

Separately, major banking groups led by the Bank Policy Institute urged Congress to tighten GENIUS Act language on stablecoin yields. They argue a loophole could let issuers offer returns through affiliates, potentially pulling trillions from bank deposits and squeezing credit.