ETH Could Gain Speed and Lower Costs as Fusaka Passes Holesky, Moves to Sepolia and Hoodi

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The Fusaka upgrade is an Ethereum protocol update that boosts on-chain bandwidth and lowers Layer‑2 costs by enabling lighter node data sampling and raising per-block gas limits to ~150M; it aims to improve throughput and enable cheaper, higher-volume L2 transactions ahead of broader tokenization use cases.

• Fusaka reduces node storage by letting nodes sample blob data, not download full blobs.

• Gas limits increase from ~45M to ~150M, enabling more transactions per block and higher L2 throughput.

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Passed Holesky tests; Sepolia and Hoodi testnets are next with mainnet deployment targeted for early December (on-track if no issues).

Fusaka upgrade: Ethereum scaling update that raises gas limits and enables lighter nodes; monitor Sepolia/Hoodi tests — read the deployment plan and market impact.

What is the Fusaka upgrade?

Fusaka upgrade is an Ethereum protocol enhancement designed to scale bandwidth and reduce costs by enabling lighter nodes to sample blob data and by increasing the protocol gas limit to roughly 150 million per block. It targets cheaper Layer‑2 transactions and greater throughput for tokenization use cases.

How does Fusaka improve transaction throughput and node efficiency?

Fusaka allows nodes to validate and sample data instead of storing full blob payloads, cutting storage requirements and bandwidth for node operators. The upgrade also raises gas limits to about 150M (from ~45M), which increases transactions per block and lets Layer‑2 networks push larger batches at lower per‑tx cost.

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Why did Ethereum prioritize Fusaka now?

Ethereum is preparing for higher on‑chain activity tied to tokenization and internet capital markets narratives. Fusaka addresses bandwidth and cost constraints that limit Layer‑2 scaling, helping Ethereum remain competitive with faster chains in throughput-sensitive applications.

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On October 1, the Ethereum protocol team announced that Fusaka successfully passed the Holesky testnet validation suite. The next milestones are Sepolia and Hoodi testnets, with a conditional mainnet upgrade targeted for early December.

How did markets react to Fusaka?

ETH rallied roughly 5% after the Fusaka announcement window, driven in part by broader market moves. Short‑term futures metrics showed elevated speculative interest: ETH Open Interest rose ~4% in 24 hours compared with SOL +2% and BTC +3%.

Source: TradingView (price chart) — Open Interest and intraday flows provided by public market data providers and exchange reports.

What are the implementation risks and monitoring points?

Key risks include client implementation bugs, consensus regressions, and unforeseen resource spikes for light nodes. Teams will monitor block propagation, reorg frequency, and memory/disk profiles on Sepolia/Hoodi. Any critical issues would delay mainnet rollout.

Frequently Asked Questions

Will Fusaka change ETH gas fees for everyday users?

Fusaka should lower per‑tx costs for Layer‑2 users by enabling larger and more efficient rollup batches, but direct L1 gas fee volatility will still depend on demand and base fee dynamics.

Can node operators run lighter nodes after Fusaka?

Yes. Fusaka enables lighter node modes that sample blob data rather than storing full payloads, reducing storage and bandwidth requirements for node operators while maintaining strong validation guarantees.

Key Takeaways

• Fusaka raises bandwidth: Enables data sampling and raises gas limits to ~150M to increase throughput.
• Testnet progression: Passed Holesky; next stops are Sepolia and Hoodi before a possible early December mainnet upgrade.
• Market impact: ETH saw short‑term speculative interest; futures Open Interest rose ~4% versus SOL +2% and BTC +3%.

Conclusion

Fusaka upgrade is a targeted scaling step for Ethereum that combines node efficiency and higher block gas capacity to reduce Layer‑2 costs and support tokenization growth. Monitor Sepolia and Hoodi testnets and exchange Open Interest metrics for deployment signals and market reaction.

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