EIP-4844

EIP-4844 (also known as Proto-Danksharding) is an Ethereum upgrade implemented in March 2024 that introduced "blob" transactions, a new data format specifically designed for Layer 2 rollups. Blobs provide a cheaper way for rollups to post their transaction data to Ethereum, dramatically reducing fees on Layer 2 networks (by up to 90% in some cases). EIP-4844 is a stepping stone toward full danksharding, which will further increase Ethereum's data capacity.