What exactly is a blob, and how does it make Layer 2 cheaper? Don’t worry—the class rep is here with the answer:
When the Cancun upgrade went live, the target was 3 blobs per block, with a maximum of 6; the Pectra upgrade in May 2025 raised that to a target of 6 and a maximum of 9.
Layer 2 networks only need to ensure that anyone can download transaction data to verify the results during the period when verification is needed. The mainnet doesn’t need to store this data forever.
There won’t be a quiz in class today, but the market might spring one on you.
$ETH 2263.99（+0.43%）
#ETH
When the Cancun upgrade went live, the target was 3 blobs per block, with a maximum of 6; the Pectra upgrade in May 2025 raised that to a target of 6 and a maximum of 9.
Layer 2 networks only need to ensure that anyone can download transaction data to verify the results during the period when verification is needed. The mainnet doesn’t need to store this data forever.
There won’t be a quiz in class today, but the market might spring one on you.
$ETH 2263.99（+0.43%）
#ETH