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Ecosystem · medium

24. EIP-4844 Blob Transactions & Layer-2 Rollup Data

Proto-Danksharding and Blob Gas.

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EIP-4844 introduced 'blob-carrying transactions' with ephemeral data blobs (~128KB each) that persist on consensus nodes for ~18 days rather than permanent EVM execution state. Rollups use blobs to post transaction batches cheaply, reducing Layer-2 gas fees by over 90%.

solidity
// In EVM, contracts inspect blob hashes via blobhash opcode:
bytes32 h = blobhash(0);

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  1. 1. How long do EIP-4844 data blobs persist on Ethereum consensus nodes?

  2. 2. Can Solidity smart contracts directly read the entire 128KB blob payload in EVM execution?

  3. 3. Why did EIP-4844 drastically reduce Layer-2 rollup transaction fees?

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