Historical retrospective · Layer 2
Celestia launched around a modular data-availability model
Celestia’s design separates data availability from execution, allowing rollups and other systems to use a dedicated network for publishing transaction data.
Modularity lets builders choose components independently instead of relying on one chain to execute, settle and publish all data.
The approach widened the scaling debate beyond Ethereum-specific rollup designs.
A data-availability layer adds a new trust and liveness dependency; users need to know what happens if data cannot be retrieved.
Primary source
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