Proto-Danksharding (EIP-4844)

This is the central feature introduced by the Dencun upgrade. It aims to optimize data storage and reduce transaction fees for layer 2 (L2) networks like Arbitrum, Optimism, and Polygon that operate on top of Ethereum's main chain.

What You Need To Know

By introducing "blobs" as a new data-sharing primitive, this upgrade significantly reduces transaction costs for Layer 2 rollups while increasing network throughput. Although it is an intermediate step toward full Danksharding, its implementation has already transformed how developers build scalable dApps and how users interact with the Ethereum network.