> > The CanonicalID seems to be used exclusively for trust, which makes me
> > wonder if we shouldn't add a separate trust element that is about the XRD
> > and not about the resource. One such idea looks like this:
>
> To be honest, I'm not quite sure what the difference of <About> and
> <CanonicalID> is, but then I've only thought about this in the context
> of OpenID discovery. If you give us <About>, I don't think we need
> <CanonicalID>, at least not for OpenID discovery :-)
You can have a single <CanonicalID> but many <About>s.
EHL
