Ethereum's Hard Fork Milestone: Blob Capacity Surges in Latest Fusaka Upgrade Phase

DegenApeSurfer · 2026-01-12T20:26:26+00:00

The Ethereum network has completed a crucial hard fork under the Fusaka upgrade, increasing blob capacity to enhance Layer 2 scaling. This adjustment enables greater data throughput and stabilizes transaction costs, allowing the network to optimize independently and accommodate increasing demand effectively.

DegenApeSurfer

2026-01-12 20:26:26

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The Ethereum network has officially crossed another milestone with developers completing the second and final hard fork parameter adjustment under the Fusaka upgrade cycle. This hard fork specifically targets blob capacity optimization—a critical component for Layer 2 scaling solutions.

What Changed: The Numbers Behind the Upgrade

The upgrade marks a significant shift in how Ethereum handles data throughput. The target blob count per block has increased from 10 to 14, while the maximum limit jumps from 15 to 21. These aren’t arbitrary numbers—they directly translate to more data space available for Layer 2 Rollups to conduct transactions at minimal costs.

Why This Hard Fork Matters

Since the Dencun upgrade introduced blobs to Ethereum in 2024, the network has gained the ability to provide affordable data storage for Layer 2 protocols. What makes this latest hard fork particularly elegant is the phased approach: instead of bundling parameter changes into massive annual upgrades, Ethereum can now fine-tune critical settings like blob limits independently.

This flexibility means the network can test, validate, and adjust capacity increases in a more measured way. For end users, the practical impact is straightforward—as blob availability expands, transaction costs on Layer 2 networks become more stable and predictable, even as on-chain activity continues to surge.

The Bigger Picture

Developers emphasize that this hard fork represents the culmination of the Fusaka upgrade cycle. With blob capacity now running at higher levels, Ethereum’s rollup ecosystem gains breathing room. The single-block blob limit increase is designed to accommodate growing demand without compromising network stability.

The architecture is elegant: blobs serve their purpose as low-cost data carriers and are automatically pruned from the mainnet, keeping the chain lean. Meanwhile, the gradual increase in blob capacity—enabled by this hard fork—ensures Layer 2 solutions can scale smoothly alongside mainstream adoption.

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