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Crypto
MEV
Miner Extractable Value — the extra profit miners or validators can make by reordering transactions inside a block.
MEV is a big part of how blockchains work today. It can be positive (keeping markets efficient) but also harmful (sandwich attacks on regular users). Many Layer 2s and new chains are trying to reduce harmful MEV.
Advanced traders and bots make millions from MEV every month.
It's like the person who controls the line at a busy shop letting their friends jump the queue for extra money.
Real world: On Ethereum, bots watch pending transactions and pay high gas fees to be placed first in a block to profit from arbitrage or front-running large trades.
💡 MEV shows that even on decentralized blockchains, the order of transactions can be worth serious money.