As per MarsBit, the Fusaka hard fork, scheduled for activation on December 3, 2025, marks Ethereum's next major network upgrade following the Pectra upgrade. This update focuses on scalability, opcode improvements, and execution security. Key proposals include PeerDAS (EIP-7594), which enhances data availability by allowing nodes to verify blobs without downloading all data, and EIP-7823, which limits ModExp input sizes to improve security. Additional upgrades include transaction gas limits (EIP-7825), execution cost-linked blob fees (EIP-7918), and new opcodes like CLZ (EIP-7939) for faster bit operations. The Fusaka upgrade combines Fulu (execution layer) and Osaka (consensus layer), aiming to support a more scalable and data-rich future for Ethereum.
Fusaka Hard Fork: Ethereum's Next Major Upgrade for Scalability
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