Remember these points about the Cancun upgrade and blobs:
1) Blob data is stored only by consensus-layer nodes for about 4096 epochs, or roughly 18 days, after which it is deleted.
2) At the Cancun upgrade launch, the target was 3 blobs per block, with a maximum of 6; the May 2025 Pectra upgrade raised this to a target of 6 and a maximum of 9.
3) When comparing fees on layer 2 networks, distinguish between the layer 2 network's own execution fees and the cost of submitting data to mainnet; both can fluctuate.
When layer 2 networks write blob data to mainnet, they also pay blob fees using $ETH . The current amount is 2249.44.
1) Blob data is stored only by consensus-layer nodes for about 4096 epochs, or roughly 18 days, after which it is deleted.
2) At the Cancun upgrade launch, the target was 3 blobs per block, with a maximum of 6; the May 2025 Pectra upgrade raised this to a target of 6 and a maximum of 9.
3) When comparing fees on layer 2 networks, distinguish between the layer 2 network's own execution fees and the cost of submitting data to mainnet; both can fluctuate.
When layer 2 networks write blob data to mainnet, they also pay blob fees using $ETH . The current amount is 2249.44.
