Definition ∞ An MEV Prevention Mechanism is a protocol design or technical solution implemented within a blockchain to reduce or eliminate Miner Extractable Value (MEV). These mechanisms aim to mitigate the ability of block producers to unfairly profit from reordering, censoring, or inserting transactions within blocks. They promote a more equitable transaction processing environment.
Context ∞ The development and deployment of MEV Prevention Mechanisms are a significant area of focus in blockchain research and news, particularly concerning Ethereum and other proof-of-stake networks. Solutions such as proposer-builder separation and encrypted mempools are actively discussed as strategies to counter front-running and sandwich attacks, thereby enhancing network fairness and integrity.