Definition ∞ Transaction sequencing fairness is the principle that transactions submitted to a blockchain network are processed and ordered in a manner that prevents any single participant from gaining an unfair advantage. This aims to mitigate issues like front-running, where a validator or miner exploits knowledge of pending transactions. Ensuring fairness promotes equitable access and reduces opportunities for predatory trading practices. It is a critical aspect of network integrity.
Context ∞ Transaction sequencing fairness is a key debate in discussions about Maximal Extractable Value and the ethical implications of blockchain transaction ordering. News often covers proposed solutions and protocol upgrades designed to improve this fairness. Achieving a truly fair sequencing mechanism remains a significant challenge for decentralized networks seeking to optimize for both efficiency and equity.