What changed with ETH Fusaka upgrade?

TLDR

Ethereum (ETH) just shipped the Fusaka upgrade. It adds PeerDAS sampling to how rollup data is verified, raises block capacity, and introduces a floor for blob fees to lower Layer 2 costs and improve efficiency per a technical update.

1. Validators now sample rollup blobs with PeerDAS, boosting throughput and reducing validator load per a network update.
2. Block gas limit increased to 60 million, coordinated across execution and consensus layers to carry more data per block per a summary.
3. A minimum blob base fee ties L2 activity to consistent costs and ETH burn mechanics per an analysis.

Deep Dive

1. PeerDAS Sampling

PeerDAS (EIP?7594) lets nodes verify small slices of L2 data blobs instead of downloading full blobs, cutting bandwidth and enabling more throughput without data?center hardware.

1. The change reduces the computational load on validators and accelerates L2 settlement per a technical explainer.
2. It preserves decentralization by keeping home stakers viable while scaling rollup capacity per a feature piece.

2. Block Limits and Throughput

Fusaka raises the default block gas limit to 60 million and bundles synchronized execution and consensus layer forks to handle larger L2 batches.

1. More transactions and compressed rollup data can settle per block, helping during demand spikes per a post?activation summary.
2. The upgrade activated at 21:49 UTC and completed in about 15 minutes, aligning client teams for stability and scaling steps like BPO blob parameter tuning per a deployment note.

3. Blob Fees and ETH Burn

A minimum blob base fee aligns L2 data costs with mainnet fees, restoring a more consistent link between usage and ETH burn.

1. Setting a floor for blob fees prevents periods of near?zero blob costs that weaken value accrual and fee burn per an analysis.
2. Commentators expect broader burn contributions from L2 activity as throughput rises, supporting a healthier economic loop per a burn and economics overview.

Conclusion

Fusaka focuses on practical scaling: PeerDAS for efficient data verification, higher block capacity, and a saner blob fee floor. Together, these changes lower L2 costs, reduce validator strain, and strengthen Ethereums throughput without compromising decentralization, setting up the next phase of user?visible improvements as blob parameters are increased safely.