2026-07-23T12:54:48Z https://drops.dagstuhl.de/oai

oai:drops-oai.dagstuhl.de:19502 2024-03-06T11:04:09Z ddc:004 open_access

Eating Sandwiches: Modular and Lightweight Elimination of Transaction Reordering Attacks Alpos, Orestis Amores-Sesar, Ignacio Cachin, Christian Yeo, Michelle Consensus MEV Byzantine behavior Rational behavior Traditional blockchains grant the miner of a block full control not only over which transactions but also their order. This constitutes a major flaw discovered with the introduction of decentralized finance and allows miners to perform MEV attacks. In this paper, we address the issue of sandwich attacks by providing a construction that takes as input a blockchain protocol and outputs a new blockchain protocol with the same security but in which sandwich attacks are not profitable. Furthermore, our protocol is fully decentralized with no trusted third parties or heavy cryptography primitives and carries a linear increase in latency and minimum computation overhead. Schloss Dagstuhl – Leibniz-Zentrum für Informatik Orestis Alpos and Ignacio Amores-Sesar and Christian Cachin and Michelle Yeo 2024 Is Part Of LIPIcs, Volume 286, 27th International Conference on Principles of Distributed Systems (OPODIS 2023) InProceedings Text doc-type:ResearchArticle publishedVersion application/pdf doi:10.4230/LIPIcs.OPODIS.2023.12 urn:nbn:de:0030-drops-195029 https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2023.12 eng https://creativecommons.org/licenses/by/4.0/legalcode