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Vitalik Buterin, co-founder of Ethereum, has said that Fusaka's PeerDAS aims to increase blob capacity by sampling data rather than requiring any node to download it all. He added that developers will scale cautiously. The statement was made on X.
"Fusaka will fix this," said Buterin. "safety first is of the utmost importance for Fusaka. The core feature, PeerDAS, is trying to do something pretty unprecedented: have a live blockchain that does not require any single node to download the full data. The way PeerDAS works is that each node only asks for a small number of 'chunks', as a way of probabilistically verifying that more than 50% of chunks are available."
Fusaka is an upcoming Ethereum protocol upgrade centered on PeerDAS, a peer-to-peer data availability sampling design. According to the announcement, instead of every node downloading full blob data, nodes request small randomized chunks to verify availability. This enables higher blob targets without proportionally increasing hardware demands. Developers have signaled a safety-first approach: initial blob counts will rise conservatively and then ramp up as testing proves reliability and decentralization hold.
