Ethereum bumps blob capacity as it gears for Fusaka upgrade

1/8/2026, 4:21:37 AM
LyanBy Lyan
Ethereum bumps blob capacity as it gears for Fusaka upgrade

Ethereum Boosts Blob Capacity Ahead of Anticipated Upgrade

Ethereum has recently increased its data capacity per block, a move that signals ongoing preparations for a significant network upgrade, tentatively referred to as "Fusaka." This adjustment involves raising the blob target to 14 and the maximum blob limit to 21. The increase in data capacity is a critical step in enhancing the network's ability to handle larger volumes of transaction data and support the growth of Layer-2 scaling solutions.

Blobs, introduced in a previous upgrade, are designed to store large amounts of data off-chain, relieving congestion on the main Ethereum network. By increasing the blob target and maximum limit, Ethereum aims to facilitate faster and cheaper transactions, particularly for applications leveraging rollups and other data-intensive technologies.

Expert View

The decision to increase blob capacity reflects Ethereum's commitment to scaling the network and improving its overall performance. This adjustment is particularly relevant in the context of the burgeoning Layer-2 ecosystem. By providing more data bandwidth for rollups, Ethereum is essentially empowering these scaling solutions to process more transactions at lower costs. The increased blob capacity should lead to noticeable improvements in transaction throughput and reduced gas fees for users interacting with decentralized applications (dApps) built on Layer-2.

However, increasing data capacity also presents potential challenges. While blobs are designed to be stored off-chain, the larger data volumes could still impact node operators and storage requirements. It is crucial for Ethereum developers to carefully monitor the network's performance and ensure that the increased capacity does not introduce any unforeseen bottlenecks or security vulnerabilities. The long-term effects of this change will need to be assessed, and ongoing adjustments may be necessary to optimize network efficiency.

What To Watch

The next few months will be critical in observing the real-world impact of this blob capacity increase. Key areas to monitor include:

  • Transaction fees on Layer-2 solutions: Are gas fees decreasing as a result of the increased capacity?
  • Transaction throughput: Is the network able to process more transactions per second?
  • Node operator performance: Are node operators experiencing any difficulties due to the larger data volumes?
  • Adoption of Layer-2 solutions: Is the increased capacity driving greater adoption of rollups and other scaling technologies?
  • The progress of the "Fusaka" upgrade: What are the next steps in the upgrade process, and what other changes are planned?

The success of this adjustment will ultimately depend on its ability to deliver tangible improvements in user experience and network performance without compromising security or decentralization. Staying informed about these key metrics will provide valuable insights into the effectiveness of Ethereum's scaling strategy and its trajectory toward a more scalable and sustainable future.

Source: CoinDesk