Sequencer Design and Decentralization

This lesson is for enrolled learners

The sequencer is the component of a rollup that receives user transactions, decides the order they'll be executed in, actually executes them, and bundles the results into batches for posting to L1. On essentially every production rollup today — Arbitrum, Optimism, Base, zkSync, and the rest — this role is filled by a single centralized operator, typically the core development……

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