2 posts tagged with "data-availability"

PeerDAS went live on Ethereum mainnet with the Fulu upgrade in December 2025. Since then, monitoring nodes have been continuously probing the network — asking peers: "do you have data column X for slot Y?" Over the past seven days, those probes generated 92.5 million responses. And 2.4 million of them came back empty.

Most of that emptiness isn't random. It's concentrated in a specific class of node.

Each blob on Ethereum costs the same regardless of how much data you actually put inside it. The slot doesn't know if you packed all 131,072 bytes or left 99% empty. You pay either way.

That flat pricing creates a question that hasn't been answered cleanly: how efficiently are rollups actually using the space they're buying? The answer turns out to span an enormous range — from 100% fill all the way down to a rollup that's posting the same completely empty blob, over and over, every block.