Where have they hidden the DotNetOpenAuth API documentation?

I am pretty sure I looked in the most common places but I can't seem to find the documentation for the DotNetOpenAuth API. Almost every link forwards to docs.dotnetopenauth.net which doesn't seem to exist.

Does anyone know where they've hidden the docs?

Solution

Depending on the version you're using:

http://docs.dotnetopenauth.net/v4.0/
http://docs.dotnetopenauth.net/v3.4/
http://docs.dotnetopenauth.net/master/

The site was down for a day or so. But it's back up now.

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