OP · 2026-11-13 09:30 UTC

How transaction ordering and MEV exposure work on OP Stack chains: a guide for banks and exchanges

On OP Stack chains in the standard configuration there is no public mempool, so pending transactions are visible only to the sequencer. The execution client orders transactions by highest priority fee, and OP Mainnet produces a block every two seconds. The article is an informational guide for banks and exchanges choosing between OP Mainnet and a dedicated OP Enterprise chain, and states it does not set compliance requirements.

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