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This section gives every OP Stack component exactly one identity page — its hub — so “where do I find docs for component X” always has the same answer. Each hub follows the same skeleton: what the component is, who runs it, where to start, and where its guides, configuration reference, releases, source, and spec live. Components are grouped by their role in the protocol. For how these roles fit together conceptually — data availability, sequencing, derivation, execution, settlement — see the OP Stack components explanation. For release history across all components, see Releases. Hubs are shipping in reviewed batches. Components without a hub yet are listed with their release history; their hub pages follow.

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Sequencing

Producing L2 blocks and making their data available.

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Derivation & execution

Deriving the canonical L2 chain from the data availability layer and executing its blocks.

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Settlement & proofs

Proposing L2 state to L1 and proving its validity.

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Deployment & infrastructure

Deploying chains and operating the infrastructure around them.