Ethereum Initiates Flexible Scaling Mechanism: BPO-1 Activation Enhances Blob Capacity, BPO-2 to Follow in January Next Year

According to a recent announcement released by the Ethereum Foundation on the X platform, the upgrade codenamed “BPO-1” has been successfully activated. Its most direct technical achievement is increasing the maximum Blob capacity per Ethereum block from 9 to 15.

With the BPO-1 upgrade, its parameters were officially adjusted from “Target/Max” of 6/9 to 10/15. Among these, the Max value of 15 is the absolute limit, while the Target value of 10 is used for dynamic network fee regulation.

BPO, which stands for “Blob Parameter Only,” is Ethereum’s scaling mechanism, essentially a flexible and rapid “mini hard fork.” Its core feature is that it requires no modifications to the underlying protocol code or full client updates—only key parameters need to be adjusted to achieve network expansion.

According to the official roadmap, this upgrade is just the beginning. A larger-scale BPO-2 has been scheduled for January 7, 2026, at which point the Blob capacity limit will be further increased to 21.

The ultimate goal of this series of upgrades is to provide more available data space for all Ethereum-based Layer 2 networks while ensuring decentralization and security, thereby reducing their transaction costs and increasing overall throughput.

It is reported that this upgrade is also a response to strong market demand. Since the introduction of the Blob mechanism during the 2024 “Dencun Upgrade,” data storage costs for Layer 2 networks have significantly decreased. Data shows that the average Blob usage per block has steadily increased from 0.9 in March 2023 to the current 5.1, indicating that scaling is inevitable.

Overall, the activation of BPO-1 marks an important milestone in Ethereum’s “phased, flexible scaling” technical roadmap. It not only immediately provides more space for Layer 2 networks but also represents a new, more responsive network capability adjustment mechanism, laying a technological foundation for Ethereum’s future efficient and sustainable development.

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