Question: Is the Sequencer shared across all OP Stack networks or per-chain?

[mopsik50]

Discussion Topic

I'm trying to better understand the structure of the sequencer in the Optimism ecosystem.
Is there currently a single sequencer that serves all networks built on the OP Stack (like Base, Worldcoin, etc.), or does each network have its own dedicated sequencer?
Also, is there a plan for future coordination or unification between them as part of the Superchain vision?

[imtipi]

currently each chain runs its own sequencer.in the future roadmap theres a option called "Shared Sequencing: Single sequencer for atomic cross-chain transactions" ,related to shared sequencer across chains.but i would suggest lets focus on delivery basic interop feature first,shared sequencer isn't a option that can be achieved in short-term

you can learn more here: https://docs.optimism.io/app-developers/guides/superchain#future-roadmap

[mopsik50]

Thanks for the clarification. If in the future there will be a shared sequencer for atomic cross-chain transactions, how will decentralization be maintained? Wouldn’t having a single sequencer introduce a central point of control or failure?