From x*y=k to Uniswap Hooks: A Comparative Review of Decentralized Exchanges (DEX)

TL;DR

This paper reviews the evolution of Decentralized Exchanges (DEXs), focusing on Uniswap's recent hooks feature, comparing various protocols, and analyzing their mechanisms, strengths, and limitations to guide future development.

Contribution

It provides a comprehensive classification and comparative analysis of major DEX protocols, highlighting recent innovations like Uniswap v4 hooks and evaluating their mechanisms and performance.

Findings

Uniswap v4 introduces hooks for plugin-like features.

Different AMM models have distinct strengths and limitations.

The evaluation framework covers mechanisms, mathematical formulations, and performance.

Abstract

Decentralized Exchanges (DEXs) are pivotal applications in the Decentralized Finance (DeFi) landscape, aiming to facilitate trustless cryptocurrency trading by relying on smart contracts and blockchain networks. The developments in the DEXs sector began with the implementation of an Automated Market Maker (AMM) system using a simple math formula by Uniswap in 2018. Absorbing significant funding and the attention of web3 enthusiasts, DEXs have seen numerous advancements in their evolution. A notable recent advancement is the introduction of hooks in Uniswap v4, which allows users to take advantage of a wide range of plugin-like features with liquidity pools. This paper provides a comprehensive classification and comparative analyses of prominent DEX protocols, namely Uniswap, Curve, and Balancer, in addition to investigating other protocols' noteworthy aspects. The evaluation framework encompasses mechanisms, components, mathematical formulations, and the performance of liquidity pools. The goals are to elucidate the strengths and limitations of different AMM models, highlight emerging concepts in DEX development, outline current challenges, and differentiate optimal models for specific applications. The results and comparative insights can be a reference for web3 developers, blockchain researchers, traders, and regulatory parties.