Shared Sequencer Networks are decentralized systems that provide a common transaction ordering service for multiple layer-2 rollup blockchains. Instead of each rollup operating its own sequencer, these networks allow rollups to share a set of independent sequencers. This arrangement aims to enhance censorship resistance, improve interoperability, and mitigate the risks associated with a single sequencer. They facilitate atomic cross-rollup transactions and reduce MEV extraction.
Context
Shared sequencer networks represent a significant area of innovation in the modular blockchain and layer-2 scaling landscape. The goal is to address the centralization concerns and potential for MEV exploitation inherent in single-sequencer rollup designs. Debates often focus on the technical complexities of building robust and decentralized shared sequencing infrastructure. The adoption of these networks could substantially improve the user experience and economic fairness across the rollup ecosystem.
A new shared sequencing mechanism uses decentralized consensus to enforce atomic transaction ordering across multiple rollups, neutralizing cross-rollup MEV.
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