Ethereum co-founder Vitalik Buterin recently announced that the forthcoming Fusaka upgrade, scheduled for December, will significantly enhance the network’s scalability by allowing nodes to verify data availability without the need to download complete blockchain data. This advancement aims to tackle existing data availability constraints through a groundbreaking feature known as PeerDAS (Peer Data Availability Sampling).
During a discussion on Thursday, Buterin explained how PeerDAS represents a remarkable innovation, as it enables a live blockchain environment in which no single node is required to download the full dataset. He emphasized that this is critical for scaling both layer 2 (L2) and layer 1 (L1) solutions. Instead of relying on complete downloads, each node will only need to retrieve small “chunks” of data. By employing statistical sampling techniques, the network can verify that the comprehensive data is indeed available across its nodes.
PeerDAS was first introduced in Ethereum Improvement Protocol 7594 (EIP-7594) in January 2024, aiming to ensure the availability of blob data while allowing for reduced data downloads. “Providing additional data availability helps bring scale to Ethereum users in the context of layer 2 systems called ‘rollups,’ whose dominant bottleneck is layer 1 data availability,” the EIP states.
Buterin’s remarks followed a notable observation from Hildebert Moulié, head of data at Dragonfly, who pointed out that Ethereum achieved its goal of six blobs per block for the first time on Wednesday. This recent surge in blob usage is largely attributed to the activities of the Coinbase layer-2 solution, Base, and Worldcoin.
Blobs, or Binary Large Objects, were introduced to the Ethereum network with the Dencun upgrade in March 2024 through EIP-4844. They are specifically designed to reduce transaction costs for layer-2 rollups. Following the surge in blob count this week, the Fusaka upgrade will double the current maximum blob capacity from a target of 6 to a new ceiling of 12 blobs per block. Buterin reminded the community that this technological leap is unprecedented, urging core developers to exercise caution during testing, despite years of development effort.
The rollout of the Fusaka upgrade, set to take place on December 3, will also involve two subsequent Blob Parameter Only (BPO) forks, which will systematically increase the maximum blob counts. The first fork will raise the limit to 15 blobs, while a second planned for January will escalate the ceiling to 21, according to Ethereum researcher Christine Kim.
These advancements signal a substantial enhancement in Ethereum’s infrastructure, promising improved efficiency and scalability for users navigating the decentralized ecosystem. The introduction of the Fusaka upgrade holds the potential to redefine how data is managed and processed on the blockchain, paving the way for a robust future for Ethereum’s layer-2 solutions.
