Fusaka Testnet Announcement

The Fusaka upgrade marks a major milestone in Ethereum’s scaling roadmap, following the Pectra upgrade. It introduces PeerDAS and several performance-enhancing EIPs aimed at boosting blob throughput, Layer 1 (L1) execution capacity, and user experience. Fusaka is currently being tested on Holesky, Sepolia, and Hoodi testnets before mainnet deployment—signaling Ethereum’s commitment to rigorous testing and sustainable scaling.

Key Ideas

PeerDAS (EIP-7594): Efficient Blob Sampling A new protocol that allows nodes to verify blob data availability by sampling rather than downloading entire blobs. This improves scalability and decentralization, especially for Layer 2 rollups, and helps reduce transaction fees.
Blob Parameter Only (BPO) Forks: Gradual increases to blob target/max values will further enhance throughput while preserving network integrity.
L1 Execution Boost via Gas Limit Increase: Fusaka raises the default gas limit to 60 million, significantly expanding L1 execution capacity.
EIP-7951: Native Support for secp256r1 Curve: Adds compatibility with secure hardware like Apple Secure Enclave and FIDO2/WebAuthn devices—streamlining authentication and onboarding for mainstream users.

Why It Matters?

Fusaka is a strategic leap toward scalable, secure, and user-friendly Ethereum infrastructure. Developers building ZK apps, rollups, or secure wallets should start preparing now to harness its full potential.