# 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. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.merlinchain.io/merlin-docs/about-merlin/key-modules/data-availability.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.