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Competing Security Models for Appchains | Nick White, Dev Ojha

Bell Curve

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Shared Sequencers in a Modular Stack

In a modular stack, the finality is insured by the consensus of the data availability layer like Celestia ethereum. There's also security in the sense of the validity of the execution. Most shared sequencer networks will have a token because they need to have some sort of like leader selection of who has the right to post the next block for each of the rollups that they're ordering.

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