Ethereum Reaches Major Milestone with Final BPO Update in Fusaka Cycle

MEV_Whisperer · 2026-01-12T20:19:53+00:00

The Ethereum network's Fusaka upgrade includes a significant capacity expansion from the recent BPO fork, allowing for gradual adjustments in blob parameters. This enhances data throughput for Layer 2 solutions, stabilizing transaction costs and enabling efficient network scaling.

MEV_Whisperer

2026-01-12 20:19:53

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The Ethereum network has just unlocked a significant capacity expansion through the completion of its second and final ‘Blob Parameters Only’ (BPOs) fork, marking a crucial phase in the Fusaka upgrade journey. This move represents a shift in how Ethereum manages network scaling—rather than waiting for comprehensive annual upgrades, developers can now fine-tune critical infrastructure parameters in isolated phases.

What Changed in This Update?

The latest BPO adjustment brings meaningful numbers to the table: the target blob allocation per block climbs from 10 to 14, while the maximum ceiling jumps from 15 to 21. These aren’t arbitrary figures—they represent Ethereum’s strategy to progressively increase data throughput without destabilizing the network. By expanding the blob capacity in measured steps, the protocol creates room for Layer 2 solutions to operate more efficiently.

The Blob Mechanism: Designed for L2 Scaling

Blobs entered Ethereum’s infrastructure during the 2024 Dencun upgrade as a purpose-built solution for Layer 2 Rollups requiring cost-effective data storage. Unlike permanent blockchain data, blobs operate on a temporary lifecycle—automatically vanishing from the mainnet approximately 18 days after inclusion. This temporary storage model keeps the mainnet lean while giving L2s the data availability they need.

Why This Matters for the Network

As single-block blob limits gradually expand, Ethereum creates additional data space for Layer 2 networks. The practical outcome: Rollup transaction costs can remain stable and predictable, even as on-chain activity continues climbing. This methodical approach to capacity expansion allows Ethereum to grow its throughput without the coordination headaches of major protocol overhauls.

The Fusaka upgrade cycle demonstrates how Ethereum is evolving beyond monolithic update patterns, favoring a more granular, testable approach to network optimization. Today’s BPO fork represents the final planned adjustment in this cycle, though the framework itself positions Ethereum for continued, measured scaling improvements ahead.

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