Ethereum Activates Fusaka Hard Fork, Introduces PeerDAS for 8x Data Throughput Boost

Ethereum activated the Fusaka hard fork on December 3, 2025, at 21:49 UTC, deploying Peer Data Availability Sampling (PeerDAS) to enhance network scalability. The upgrade enables up to 8x data throughput for Layer 2 rollups. Transaction fees on Layer 2 platforms are projected to decrease by 40–60%.