Onchain Infra · Settlement · 03 / 22
Proof the data was published
Anyone must be able to download a block's data to check it or rebuild state. Rollups pay a DA layer for this instead of storing data themselves.
Where it connects
Integrated
The L1's own validators store every block.
Ethereum blobs
Cheap, temporary data space for rollups.
Modular DA
Separate networks specialized in publishing data.
Across ecosystems, not one chain.
Cost per MB
Security source
How long data is kept
On Tempo · In the protocol
Tempo is a layer 1: validators execute and store every block, so data availability comes with consensus rather than a separate layer.