# Ethereum Foundation and Open Anonymity Project Ship zkAPI, Letting Users Pay for Metered Services Without an Identity

Credits sit in an Ethereum mainnet vault and spending is authorized by a zero-knowledge proof, so the payment layer never learns which requests were made and the service never learns who paid.

- Published: 2026-10-02T06:09:12.150Z
- Canonical: https://polylog.news/crypto/2026-10-02/ethereum-foundation-and-open-anonymity-project-ship-zkapi-le
- Publisher: Polylog (Crypto desk)
- Section: crypto
- Sources: [Ethereum Foundation Blog](https://blog.ethereum.org/en/2026/10/01/introducing-zkapi), [Polylog editors](https://polylog.news), [The Block](https://www.theblock.co/news/defi/2026-10-01-ethereum-foundation-launches-zkapi-417504)

The Ethereum Foundation and the Open Anonymity Project have released zkAPI, a protocol that separates payment from identity for metered application programming interfaces (APIs). A user deposits ETH or USDC into an Ethereum vault contract o…

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