> For the complete documentation index, see [llms.txt](https://docs.blockstreet.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blockstreet.xyz/getting-started/why-usd1.md).

# Why USD1

**USD1 is the first regulatory-compliant, programmable stablecoin** built for mass adoption. 

It combines the credibility of U.S. public markets with the utility of decentralized finance.

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