shared sequencers
Astria, Project to Decentralize Crucial Blockchain 'Sequencers,' Goes Live With Main Network
Astria's sequencing layer could be used like a modular plug-in for other networks, as an alternative to a centralized sequencer – sometimes seen as a bottleneck, or a single point of failure, or potentially a vector of transaction censorship.

Blockchain Startup Rome Raises $9M to Serve Ethereum Layer-2s Through Solana
Shared sequencers and data availability (DA) are services that Rome could provide, as blockchain builders increasingly rely on "modular" networks to handle Ethereum's myriad components and functions.

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