The ongoing trial of Anton and James Peraire-Bueno, accused of exploiting Ethereum through maximal extractable value (MEV) bots, has taken a new turn. US prosecutors are contesting the inclusion of crypto policy arguments in the case. The debate centers around whether Coin Center, a cryptocurrency advocacy group, should be allowed to submit an amicus brief, a document filed by non-litigants with a strong interest in the subject matter, according to Cointelegraph.
In a recent filing, prosecutors in the US District Court for the Southern District of New York have objected to the brief from Coin Center. They argue that such a brief could sway the jury towards acquitting the Peraire-Bueno brothers by introducing broader crypto policy considerations, which they claim are irrelevant to the legal issues at hand. The prosecutors emphasized that the court’s role is to determine guilt based on evidence, not to address industry-wide policy implications.
The case has attracted significant attention due to its potential impact on the crypto industry. The Peraire-Bueno brothers are charged with orchestrating a $25 million MEV exploit on the Ethereum blockchain in April 2023. MEV attacks involve manipulating transaction orders within a block to secure profits unfairly.
Defense attorneys for the Peraire-Buenos have countered the prosecutors’ arguments, asserting that Coin Center’s brief provides a crucial perspective that could aid the court’s understanding of the case. They argue that the government’s theory could criminalize commonplace trading strategies and interactions on the Ethereum network, a stance they claim is inconsistent with judicial precedents.
The defense further argues that the government’s interpretation could lead to far-reaching consequences for blockchain users engaged in economic activities. They contend that the alleged victims in this case were merely other trading bots, rather than individuals being defrauded.
The trial, which began on October 15, has seen extensive discussions about the legality of using MEV bots. Industry stakeholders are closely monitoring the proceedings, given the potential implications for blockchain technology and trading practices. The European Securities and Markets Authority reported that Ethereum-based MEV revenues reached approximately $963 million between December 2022 and January 2025, underscoring the financial stakes involved.
The US government has accused the brothers of conducting a “high-speed bait and switch” to acquire digital assets illicitly. However, the defense maintains that their clients were merely employing a legitimate trading strategy. If convicted, the Peraire-Bueno brothers face up to 20 years in prison for each charge, including conspiracy to commit wire fraud and money laundering.
As the trial continues into November, the court’s decisions could set important precedents for how crypto-related cases are handled in the future.
