Ethereum’s zkAPI Introduces Privacy to AI Payments, but With a Catch
Key Highlights: The Ethereum Foundation has detailed zkAPI, an experimental protocol designed to decouple user payment credentials from online service access. By utilizing zero-knowledge proofs, Poseidon hashing, and disposable API keys, the framework ensures AI providers see prompts without learning billing details, while billing servers never see user queries. Funds remain self-custodial onchain, allowing users ...