Fusaka Upgrade Goes Live on Ethereum Mainnet
Fusaka Upgrade Goes Live on Ethereum Mainnet
馃殌 Fusaka finally drops
Fusaka is now live on Ethereum mainnet, delivering the infrastructure needed for Layer 2 scaling.
The upgrade introduces PeerDAS, which allows validators to sample small data chunks instead of downloading full blobs. This reduces storage requirements from 40-100 GB to just sampled shards.
Key improvements:
- More blob capacity for rollups through Blob Parameter-Only forks
- Gas limit increase from 45M to 60M
- Lower data availability costs for L2s
- Reduced fees for end users
The upgrade emerged from cross-ecosystem collaboration between Ethereum core developers, client teams, Base, Soneium, OP Labs, and Sunnyside. Teams worked together to solve L2 scaling bottlenecks that were causing rising fees.
For builders: OP Stack chains now have more throughput headroom, lower L1 data costs, and a predictable scaling roadmap.
The implementation included extensive testing through devnets that pushed different client combinations under real rollup workloads.
Read the full technical details: Optimism blog post
Fusaka is going live on @Ethereum mainnet! Over the last year, teams across the Superchain, @ethereumfndn, @base, @OPLabsPBC and @sunnyside_io shipped upgrades that give OP Stack chains more blob capacity, lower fees, and a clear path to scale. Here鈥檚 how it came together 馃憞
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