Ethereum Completes Final BPO Fork in Fusaka Upgrade, Further Increasing Data Availability Cap

Odaily News Ethereum developers have completed the second and final planned "Blob Parameters Only (BPO)" fork within the Fusaka upgrade cycle. This update increases the target number of blobs per block from 10 to 14 and the maximum from 15 to 21, aiming to further enhance the network's data availability capabilities.

Officials stated that the BPO mechanism allows Ethereum to independently and incrementally adjust key parameters like blobs without waiting for major annual upgrades, thereby testing and releasing network capacity in a more controlled, step-by-step manner. Blobs were initially introduced in the 2024 Dencun upgrade to provide low-cost data storage for Layer 2 Rollups; this type of data is automatically pruned from the mainnet after approximately 18 days.

This adjustment is seen as the concluding step of the Fusaka upgrade. Developers noted that with the gradual increase in the per-block blob cap, Ethereum can provide more data space for Layer 2 networks, helping to maintain stable transaction costs for Rollups as on-chain activity grows. (The Block)