What does “data availability” mean, and why is it so important for scaling?
Ethereum’s Fusaka upgrade in December 2025 introduced PeerDAS, so nodes no longer need to download the full blob data; they can confirm data availability by sampling a portion of it.
If a block proposer publishes only the block header but withholds some transaction data, others can’t check whether the results are correct.
The key thing to keep in mind when managing funds: when you come across a chain claiming to offer “ultra-low costs,” first ask where its transaction data is stored and who ensures it can be downloaded.
$TIA 0.4269（-3.11%）
Market conditions change quickly, so don’t rush to conclusions.
Ethereum’s Fusaka upgrade in December 2025 introduced PeerDAS, so nodes no longer need to download the full blob data; they can confirm data availability by sampling a portion of it.
If a block proposer publishes only the block header but withholds some transaction data, others can’t check whether the results are correct.
The key thing to keep in mind when managing funds: when you come across a chain claiming to offer “ultra-low costs,” first ask where its transaction data is stored and who ensures it can be downloaded.
$TIA 0.4269（-3.11%）
Market conditions change quickly, so don’t rush to conclusions.