“Blob” often comes up in news about Ethereum upgrades. What exactly does this data contain?
When comparing fees on Layer 2 networks, you need to distinguish between the network’s own execution fees and the cost of submitting data to the mainnet. Both can fluctuate.
To be frank, a Layer 2 network only needs to ensure that anyone can download the transaction data to verify the results during the period when verification is needed. The mainnet doesn’t need to store this data permanently.
When a Layer 2 network submits blob data to the mainnet, the blob fee is also settled in $ETH .

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