Ethereum Activates BPO #2 Upgrade Boosting Blob Capacity

• Ethereum activated BPO #2, completing the Fusaka upgrade and increasing blob capacity per block.
• The blob target rose to 14 and the maximum limit to 21, expanding data space for rollups.
• More blob capacity reduces competition among Layer 2s and stabilizes rollup fees.

Ethereum (ETH) has activated its second Blob Parameters Only fork, known as BPO #2, completing the final stage of the Fusaka upgrade. The change increases how much rollup data Ethereum can carry per block, directly targeting Layer 2 costs rather than base-layer features.

With the upgrade finalized this week without any issues, ETH is now transitioning toward smaller, parameter-based scaling steps instead of infrequent, high-risk hard forks.

What BPO #2 Changes

BPO #2 raises Ethereum’s blob limits, the temporary data packet rollups us…

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