Privacy-Preserving Account-Abstraction for Teams on EVM chains

Abstract

This paper introduces ZK-Team, a solution addressing the challenges faced by organizations in enabling shared ownership of accounts among team members. The conventional method involves smart contracts, but usability issues and privacy concerns hinder practicality. ZK-Team leverages Ethereum’s Account ion (ERC-4337) and zero-knowledge proofs to allow shared accounts without dedicated EOAs (Externally Owned Accounts) for gas fees, ensuring privacy. Our solution includes an innovative mechanism for transparently managing zero-knowledge inputs, minimizing on-chain storage without relying on an off-chain storage. The paper discusses both the theoretical aspects of the solution and its implementation available as an open-source project.