Miner extractable value is a metric that gauges how much money a miner can generate by handling transactions in the blocks they create. The arbitrage of MEV by DeFi traders has an impact on Etherscan and other network transactions. According to Flashbots, MEV extraction will most likely be centralised using "permissioned dark transaction pools." MEV-Geth is a go-ethereum client upgrade that adds a sealed-bid block space auction mechanism for expressing transaction order preferences.