> For the complete documentation index, see [llms.txt](https://troy-ai.gitbook.io/troy-ai-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://troy-ai.gitbook.io/troy-ai-docs/data-ownership-and-value-redistribution/troy-id-erc721-nft.md).

# TROY ID (ERC721 NFT)

\- Serves as a unique digital identity and credential across the TROY AI ecosystem.

\- Stores user preferences, achievements, and data sharing permissions.

\- Enables seamless integration with various applications and services.