# Celestia

> Cut Ahead.

Celestia provides a modular data availability layer for blockchains, allowing developers to deploy custom rollups and sovereign chains without bootstrapping new consensus networks.

Celestia operates a modular data availability network that separates consensus and data availability from execution, enabling rollups and layer 2 blockchains to publish transaction data efficiently. Using data availability sampling, light nodes verify data availability by checking small random portions of blocks rather than downloading entire blocks, allowing blocks to scale to large sizes while maintaining decentralization. Developers can deploy custom execution environments on Celestia while benefiting from its consensus layer security.

- Type: Project
- Sector: Infrastructure
- Status: Active
- Founded: 2019-01-01
- Profile: https://thegrid.id/profiles/celestia

## Products

- [Celestia Mainnet](https://thegrid.id/profiles/celestia): Celestia Mainnet operates a proof-of-stake blockchain implementing data availability sampling through erasure coding and namespaced Merkle trees, enabling light nodes to verify block data availability without downloading entire blocks. The network processes PayForBlobs transactions for rollups to publish data, with blocks initially sized between 2MB and 8MB, upgradeable through governance. Built on Cosmos SDK with modified Tendermint consensus, the system separates consensus and data availability from execution, allowing developers to deploy custom rollups using Celestia as the base layer. (L1, Live, Main Product)

## Assets

- [Celestia (TIA)](https://thegrid.id/profiles/celestia): TIA is the native token of Celestia. It is used for paying transaction fees, staking to secure the network through proof-of-stake consensus, and voting on protocol governance decisions. The network separates data availability from execution, allowing rollups to publish transaction data while light nodes verify availability by sampling small random portions of blocks rather than downloading entire blocks. (Native)

## Links

- [Main](https://celestia.org)
- [Documentation](https://docs.celestia.org)
- [Blog](https://blog.celestia.org)
- [Forum](https://forum.celestia.org)
- [Privacy policy](https://celestia.org/privacy)
- [Terms of Service](https://celestia.org/tos)
- [Twitter / X](https://x.com/celestia)
- [Discord](https://discord.gg/celestiacommunity)
- [Reddit](https://www.reddit.com/r/CelestiaNetwork)
- [GitHub](https://github.com/celestiaorg)
- [YouTube](https://youtube.com/@celestia)
- [LinkedIn](https://linkedin.com/company/celestiaorg)

## Legal

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Model 2 - commercial licenses. The Grid Data Service (TGDS) is also available as a commercial license. See [Web Services Terms](https://about.thegrid.id/legal/web-services-terms) for commercial use that is not covered by the open data service.

The following applies to both licensing models.
- All data is provided AS IS with no guarantees of accuracy.
- The Grid does not provide investment, legal, or tax advice, and
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- [Data Licensing & Disclaimers](https://about.thegrid.id/legal/data-licensing-and-disclaimers): Licensing models and disclaimers
- [Open Data (ODbL)](https://about.thegrid.id/legal/open-data): Open Database License terms and scope for The Grid's open data service.
- [Attribution Guidelines](https://about.thegrid.id/legal/open-data-attribution-guidelines): How to attribute The Grid's data when using the open data service.
- [Web Services Terms](https://about.thegrid.id/legal/web-services-terms): commercial Terms for using data services.
- [All Legal Documents](https://about.thegrid.id/legal): Full index of terms, policies, and disclosures

## Optional

- [TGS Field Descriptions](https://github.com/The-Grid-Data/workspace-public/blob/main/references/tgs-field-descriptions.md): Schema field definitions for The Grid's data model
- [TGS JSON Structure](https://github.com/The-Grid-Data/workspace-public/blob/main/references/tgs-json-structure.md): Data model structure and relationships
- [Product Type Definitions](https://github.com/The-Grid-Data/workspace-public/blob/main/references/product-type-definitions.md): Definitions for each product type
- [Product Type Classification](https://github.com/The-Grid-Data/workspace-public/blob/main/references/product-type-classification.md): Guide for classifying products into types
- [Grid MCP Guide](https://github.com/The-Grid-Data/workspace-public/blob/main/grid-search/skills/grid-query/references/grid-mcp-guide.md): How to query The Grid programmatically via MCP