Ethereum Network Successfully Activates Fusaka Hard Fork

December 4, 2025 · 2 min read
Ethereum Network Successfully Activates Fusaka Hard Fork

On Ethereum, the Fusaka hard fork was successfully activated. It’s designed to significantly increase the throughput of the main layer and improve the efficiency of L2 protocols.

Ethereum devs reported the successful rollout of the large-scale Fusaka hard fork on the mainnet. The update included 11 Ethereum Improvement Proposals (EIP), with the key feature being the implementation of PeerDAS technology, which allows nodes to verify parts of BLOB data instead of downloading it in full. This significantly reduces the load on storage nodes, enabling a substantial increase in data capacity for L2 networks. The update also aims to raise the gas limit, expand BLOB capacity, and enhance network security and performance.

According to Ethereum Co-Founder Vitalik Buterin, Fusaka will make the network more resistant to 51% attacks, as PeerDAS “literally is sharding.” He emphasized that the network can now reach consensus on blocks without any single node needing to see more than just a fragment of the data. However, Vitalik noted that sharding functionality currently applies only to L2 networks, and further development is needed to implement it on the mainnet, including the creation of a full-fledged ZKP-EVM.

The Fusaka hard fork is the largest mainnet update since the Pectra hard fork in May.

Recently, Ethereum developers also unveiled a ten-year roadmap for the network, centered on simplifying the architecture of the main layer and making privacy an integral part of Ethereum’s technical framework.