> For the complete documentation index, see [llms.txt](https://sixnetwork.gitbook.io/nft-gen-2-tech-doc/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://sixnetwork.gitbook.io/nft-gen-2-tech-doc/overview/cosmos-sdk.md).

# Cosmos SDK

NFT Data blockchain is a specific blockchain built from [Cosmos SDK ](https://docs.cosmos.network/v0.46/intro/overview.html)(on top of [Tendermint](https://github.com/tendermint/tendermint)) to enhance NFT usage functions, primarily implemented on a centralized backend system.