CoMMA Protocol: Towards Complete Mitigation of Maximal Extractable Value (MEV) Attacks

TL;DR

The paper introduces the CoMMA protocol, a two-phase transaction system designed to completely prevent MEV attacks by ensuring transaction order integrity and user protection in blockchain networks.

Contribution

It presents a novel two-phase protocol that guarantees the elimination of MEV attacks, with formal correctness proof and demonstrated effectiveness.

Findings

Protocol effectively prevents MEV attacks

Formal proof of protocol correctness

Demonstrated robustness in blockchain scenarios

Abstract

MEV attacks have been an omnipresent evil in the blockchain world, an implicit tax that uninformed users pay for using the service. The problem arises from the miners' ability to reorder and insert arbitrary transactions in the blocks they mine. This paper proposes a 2-phased transaction protocol to eliminate MEV attacks. The user requests an interaction token from the on-chain counter-party. This token serves as a blind preemption for the counter-party and prevents the reordering of transactions at lower levels in the blockchain framework. We prove the correctness of the CoMMA protocol and demonstrate its efficacy against MEV attacks.