SoK: Decentralized Exchanges (DEX) with Automated Market Maker (AMM) Protocols release_i5xxmh54abfpvjyjyjzwodvimy

by Jiahua Xu, Krzysztof Paruch, Simon Cousaert, Yebo Feng

Released as a article .

2021  

Abstract

As an integral part of the decentralized finance (DeFi) ecosystem, decentralized exchanges (DEX) with automated market maker (AMM) protocols have gained massive traction with the recently revived interest in blockchain and distributed ledger technology (DLT) in general. Instead of matching the buy and sell sides, AMMs employ a peer-to-pool method and determine asset price algorithmically through a so-called conservation function. To facilitate the improvement and development of AMM-based DEX, we create the first systematization of knowledge in this area. We first establish a general AMM framework describing the economics and formalizing the system's state-space representation. We then employ our framework to systematically compare the top AMM protocols' mechanics, illustrating their conservation functions, as well as slippage and divergence loss functions. We further discuss security and privacy concerns, how they are enabled by AMM-based DEX's inherent properties, and explore mitigating solutions. Finally, we conduct a comprehensive literature review on related work covering both DeFi and conventional market microstructure.
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Type  article
Stage   submitted
Date   2021-10-05
Version   v4
Language   en ?
arXiv  2103.12732v4
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