Blockchain Data Storage Strategies

Blockchain data can be stored directly on-chain or secured by a blockchain, and the best choice depends on the data's source, destination, availability needs, and security requirements. Integrity is excellent across these options because hashes are posted on L1, while availability guarantees differ. EIP-4844 blobs offer cheap temporary storage lasting about 18 days, calldata is the cheapest permanent option at about 45 cents per kilobyte, and EVM storage is the most expensive, at about $19.5 per kilobyte.