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NodeKit Javelin: shared block building for cross-rollup composability

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ExplainerL1/L2NodeKitJavelinSuperchainAggLayer

Explains how NodeKit's Javelin, a shared block building layer, enables synchronous cross-chain communication regardless of rollup architecture or sequencer. Its Composable Network is pitched as the connectivity layer across siloed rollup clusters like Superchain and AggLayer.

Key claims
Javelin enables atomic cross-chain communication independent of rollup stack or sequencing
A chain can be part of Superchain or AggLayer and the Composable Network at once
With Javelin, @nodekitorg actually fixes this. Javelin is a shared block building layer (tge first Superbuilder) that enables synchronous communication between chains. It is compatible with any protocol, allowing chains to communicate with atomicity regardless of the rollup architecture, sequencing solution they use or cluster they are part of. The Composable Network that @nodekitorg is building will be the overarching connectivity layer to connect all the walled gardens / siloed clusters. A chain can for example be part of Superchain or AggLayer and also the Composable Network. Some major integrations already announced and more coming. Composability is inevitable. Study @nodekit. Edit: Made a typo, I mean the first Superbuilder*
QUOTING @andyyy
We are building rollup clusters like the Superchain and Elastic chain, which offer better interoperability and security guarantees within their cluster. However, are we just building more walled gardens? How will these different clusters connect? Many questions to answer...
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