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EIP-4844

Proto-Danksharding

PreviousOnchain Data AvailablityNextData Availability Sampling

Last updated 1 year ago

It introduces a new transaction format, the "blob-carrying transactions", designed to slash gas fees and supercharge scalability.

Take the Optimistic rollups as an example:

  1. They post compressed transaction data to Ethereum.

  2. Then, they leave it for about 7 days, giving independent verifiers time to check things out.

  3. Spot an issue? Raise the alarm with a fraud-proof challenge! This makes the chain backtrack and ditch the dodgy block.

But here's the catch we talked about:

This only works if the data is there to check. Right now, this data is stored forever onchain (Ethereum L1) as CALLDATA, which makes it quite expensive. 📦

However, with the upcoming EIP-4844, rollups can soon store their data in more budget-friendly blob storage. But, it's like a Snapchat for data – it disappears after ~1-3 months! ⏳

During that short window, Ethereum's got your back, ensuring data's available. After that? It's up to the Ethereum community to keep things in check. Any node can double-check data using DAS (Data Availability Sampling), the solution to fraud-proof data availability problem!

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