> For the complete documentation index, see [llms.txt](https://api.veratad.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://api.veratad.com/knowledge-based-authentication.md).

# idmatch+

- [United States](https://api.veratad.com/knowledge-based-authentication/unitedstates.md): Identity verification via trusted and verified data sources in the United States. This service will also return a KBA quiz for verification.