Summary
The Ethereum Foundation and the Open Anonymity Project launched zkAPI on Ethereum mainnet, letting users pay for AI models and metered APIs without revealing their identity. Users deposit ETH or USDC into a private vault, and the device generates a zero-knowledge proof showing a funded balance was…
Key points
- It demonstrates how crypto payments can solve identity binding in AI services' privacy and billing, practical infrastructure for the agent economy.
- By decoupling payment links from AI usage records, it offers a viable path for API payment scenarios requiring business or personal identity protection.
- AI service providers and privacy tool developers can evaluate zkAPI-style anonymous billing; enterprises must understand it does not cover network-layer anonymity and is not a complete anonymity solution.
- The design builds on ZK API Usage Credits published by Vitalik Buterin and Davide Crapis in February this year.
Editorial note
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