The Fusaka upgrade's PeerDAS implementation is a game-changer. Why? Because this is actual sharding in action.

Think about what's happening here: Ethereum nodes can now reach consensus on blocks without any single participant needing to download the entire data payload. Each node only processes a small fraction. The beauty of this design? It's not relying on network-level trust.

Even if 51% of validators turn malicious, the system holds up. That's because verification happens client-side through probabilistic sampling. No central coordination required. No trust assumptions beyond the protocol itself.

This marks a fundamental shift in how distributed consensus can scale while maintaining decentralization guarantees.