Ethereum Scales with Fusaka Upgrade, Maintains Decentralization

The Ethereum network has undergone a significant upgrade called Fusaka, which aims to scale the network while maintaining decentralization. The upgrade was activated on December 3, 2025, and includes several key changes. One of these changes is an increase in the default block gas limit from 45 million to 60 million, allowing for more computation capacity per block.

Another important change is the introduction of Peer Data Availability Sampling, which allows validators to check small, randomly sampled pieces of data from different network peers instead of downloading entire blobs. This should help reduce the load on the network and improve efficiency.

The upgrade also includes Verkle Trees, a new data structure that compresses cryptographic proofs into smaller, more efficient structures. This is expected to reduce the storage space required by nodes, making it easier for them to maintain their place in the network.

In addition to these changes, the Ethereum Foundation has implemented a bug bounty program with rewards of up to $2 million for critical vulnerabilities found during the four-week program.