Ethereum’s zkAPI Enables Anonymous Prepaid Payments for AI Queries

zkAPI enables anonymous — A new zero-knowledge system called zkAPI now enables users to pay for AI model queries on the Ethereum network without revealing their identity or specific prompts to a single party.

The protocol, described in a technical analysis published Tuesday, allows users to prepay using the USDC stablecoin. A user’s query is then executed via a cryptographic proof, separating payment information from the request data. This design prevents any single entity from linking a user’s identity directly to their specific AI interaction.

zkAPI was designed to address growing concerns over data privacy in the AI sector, where user queries to models like OpenAI’s offerings can reveal sensitive personal or business information. By leveraging zero-knowledge proofs on Ethereum, the system aims to create a trustless environment for private AI consumption.

The development highlights an expanding use case for Ethereum’s infrastructure beyond decentralized finance, positioning the network as a potential backbone for privacy-focused computational services.