Decentralizing Sequencers Wait it’s all PBS Always have been
summary
Rollups currently bundle the proposer and block-builder roles, recreating pre-PBS L1 MEV dynamics: priority gas auctions, extractive frontrunning, and vertical integration. The talk claims PBS must be deployed on L2 but is insufficient without separating proposer and builder; concrete challenges are privacy (users expect centralized sequencer UX), cross-domain MEV driving builder centralization, and low-latency pre-confirmations. Proposed tools include encrypted mempool designs and a decentralized builder project called Suave (work in progress) to make ordering private, composable, and scalable.
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chapters (11)
- 0:00Intro
- 0:24Summary
- 1:37What is a sequencer?
- 2:37Why is decentralizing L2 sequencers important?
- 4:12How to decentralize?
- 7:59Refresher: What PBS does
- 10:49How do we recreate privacy?
- 13:40Latency
- 14:55SUAVE
- 16:16In the rollup endgame, we're gonna need all three
- 16:28Conclusion
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