What Is Maximal Extractable Value (MEV) & How Does It Work?

All new transactions on a blockchain are verified through the work of miners or validators. They must be rewarded for their hard work, as well as for their use of required resources, and they will logically give preference to user transactions that offer greater compensation. This means that higher transaction fees and block rewards often result in those transactions being completed faster. To further optimize profits, block producers may strategically manipulate the system. Collectively, these strategies are referred to as maximal extractable value.

Key Takeaways:

• Maximal extractable value (MEV) refers to a strategy by which miners, validators and searchers insert, censor and reorder transactions to optimize their profitability.
• While MEV strategies can be advantageous for block producers, they can have negative consequences for users and networks.
• Some of the most common MEV strategies include DEX arbitrage, back-running, front-running, liquidation and sandwich trading.

What Is Maximal Extractable Value (MEV)?

Maximal extractable value (MEV) is a strategy that miners, validators and searchers use to optimize their profitability by inserting, censoring and reordering transactions. While MEV reflects profits for them, it has negative consequences for users and networks.