Vitalik Buterin, EF AI lead propose ZK privacy for AI APIs with 100 USDC deposits

In a blog post on Wednesday, Vitalik Buterin and Ethereum Foundation AI lead Davide Crapis proposed a zero-knowledge–based system to keep AI API calls private while enabling payment and anti-abuse controls. Users would fund a smart contract (e.g., 100 USDC) and make unlinkable requests, with dual-staking penalties deterring double-spends and policy violations.