> For the complete documentation index, see [llms.txt](https://docs.merlinchain.io/merlin-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.merlinchain.io/merlin-docs/about-merlin/key-modules/data-availability.md).

# Data Availability

The team is collaborating with Celestia and Nubit to optimize the current data availability solution for Merlin, ensuring verifiable block data publication and enhancing network transparency and credibility.

* **Public Data Availability**: The coming data availability(DA) solution provides public data availability guarantees, allowing everyone to view and store Merlin Chain's state.
* **Historical Data Storage**: Once data is published and confirmed available on DA network, rollups and applications are responsible for storing their historical data.
* **Data Availability Verification**: When nodes receive new blocks, they verify the availability of the data, ensuring the data in the network is complete and consistent.