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Ethereum Schedules Fusaka Upgrade for December 3 Mainnet Activation

This network hard fork architects a superior data availability layer, engineering greater transactional throughput and systemic efficiency.
Greeks.LiveSeptember 19, 20251 min

The Fusaka upgrade represents a scheduled architectural evolution of the Ethereum mainnet, designed to augment its core data handling capacity. The integration of Peer Data Availability Sampling (PeerDAS) provides a mechanism for validators to confirm data blobs through cryptographic sampling, a process that secures the network while demanding fewer resources. This enhancement directly addresses network congestion by fundamentally increasing the block gas limit, which allows for a greater volume of transactions to be processed.

The systemic consequence is a more robust and efficient base layer, capable of supporting increased activity from Layer-2 rollups and complex decentralized applications. The entire protocol is undergoing a phased deployment across multiple testnets to ensure system integrity before the mainnet activation.

The Fusaka hard fork is a foundational enhancement to Ethereum’s operational architecture, engineered to increase network throughput and data efficiency, thereby providing a more scalable and robust platform for decentralized applications and Layer-2 systems.

  • Mainnet Activation Target ▴ December 3, 2025
  • Block Gas Limit Increase ▴ From 30 million to 150 million units
  • Primary Technical Integration ▴ Peer Data Availability Sampling (PeerDAS)

Signal Acquired from ▴ The Block

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Glossary

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Data Availability

Meaning ▴ Data Availability refers to the assurance that all necessary transactional data, including order book states, trade executions, and settlement finality, is consistently accessible and verifiable by authorized participants within a digital asset derivatives ecosystem.
A glowing, intricate blue sphere, representing the Intelligence Layer for Price Discovery and Market Microstructure, rests precisely on robust metallic supports. This visualizes a Prime RFQ enabling High-Fidelity Execution within a deep Liquidity Pool via Algorithmic Trading and RFQ protocols

Layer-2 Rollups

Meaning ▴ Layer-2 Rollups are scaling solutions that enhance Layer-1 blockchain throughput and reduce transaction costs.
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Hard Fork

Meaning ▴ A Hard Fork signifies a fundamental, non-backward-compatible change to a blockchain protocol, mandating that all network participants upgrade their software to the new version.

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