# Building a Modular Storage Layer for Ethereum on EIP-4844 | Qi Zhou - EthStorage

- Channel: [Ethereum Denver](https://streameth.org/ethereum-denver)
- Date: 2024-10-09
- Duration: 22:20
- Topics: blockchain, web3, ethereum, Education
- Watch: https://streameth.org/watch/yt-r9fXJ_QuR0Q
- YouTube: https://www.youtube.com/watch?v=r9fXJ_QuR0Q

## Description

EIP-4844 is the much anticipated native Ethereum data availability (DA) solution in the upcoming Ethereum Cancun upgrade.  However, to limit the storage requirement of the validators, EIP-4844 will discard the DA data (namely binary large objects, BLOBs) older than 18 days. In this talk, we introduce EthStorage, an Ethereum L2 solution to offer long-term available solution for EIP-4844 BLOBs with on-chain proof of storage verification.  By indexing the BLOBs on-chain and storing BLOBs off-chain, EthStorage can scale to hundreds of Terabytes or even Petabytes at 1/100x to 1/1000x of Ethereum storage cost. We will demonstrate the EthStorage testnet that is integrated with EIP-4844 on the Ethereum testnet, and showcase prototypes for new Ethereum applications like vitalik's blog, decentralized Dropbox, dynamic NFTs, etc.

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