What exactly is a blob, and how does it make Layer 2 cheaper?
Blob data is stored only by consensus-layer nodes for about 4,096 epochs, or roughly 18 days, after which it is deleted.
The Fusaka upgrade in December 2025 introduced PeerDAS, which lets nodes sample only a portion of the blob data. Since then, the blob limit has also been raised.
The key thing to remember when managing funds: when comparing fees across Layer 2 networks, distinguish between the network’s own execution fees and the cost of submitting data to mainnet. Both can change.
$ETH 2503.16 (+0.33%)
Blob data is stored only by consensus-layer nodes for about 4,096 epochs, or roughly 18 days, after which it is deleted.
The Fusaka upgrade in December 2025 introduced PeerDAS, which lets nodes sample only a portion of the blob data. Since then, the blob limit has also been raised.
The key thing to remember when managing funds: when comparing fees across Layer 2 networks, distinguish between the network’s own execution fees and the cost of submitting data to mainnet. Both can change.
$ETH 2503.16 (+0.33%)