Federal prosecutors have formally opposed cryptocurrency policy interpretations being introduced as evidence in the ongoing MEV bot manipulation trial against brothers Anton and James Peraire-Bueno. The legal proceedings, now entering their eleventh day, have drawn significant attention from the digital asset sector as the court considers fundamental questions about blockchain transaction mechanics and their legal treatment.
During recent arguments, government attorneys contended that policy discussions regarding cryptocurrency’s regulatory framework should remain separate from the criminal case’s factual determinations. The prosecution maintains that the defendants’ alleged exploitation of Ethereum’s mempool for maximal extractable value (MEV) extraction constitutes clear wire fraud and conspiracy, regardless of broader industry policy considerations.
A pivotal development emerged as District Court Judge Katherine Polk Failla indicated she would soon rule on whether cryptocurrency advocacy organization Coin Center may submit an amicus curiae brief. Such a filing would provide the court with specialized technical perspective on MEV practices within Ethereum’s ecosystem, though prosecutors argue this would introduce irrelevant policy debates into what they characterize as a straightforward fraud case.
The trial’s outcome could establish important precedent regarding legal responsibility for blockchain network interactions, particularly around MEV extraction techniques that exist in regulatory gray areas. Market participants and legal experts are closely monitoring whether the court will accept external technical testimony or limit arguments strictly to the alleged fraudulent activities.

