> For the complete documentation index, see [llms.txt](https://learn.hex1.club/hex-one-protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.hex1.club/hex-one-protocol/hdt.md).

# Hex1 Debt Title (HDT) NFT

- [Hex1 Debt Title NFT](https://learn.hex1.club/hex-one-protocol/hdt/hdt.md): The Hex1 Debt Title NFT represents the initial $HEX deposit by the user. This NFT is used to borrow against.