Is the ClaimedIdentifier the unique one (DotNetOpenAuth)

I'm using now DotNetOpenAuth for doing login with OpenId

I looked at their OpenIdRelyingPartyMvcDemo and at the NerdDinner mvc demo

and both applications are using the respons开发者_StackOverflowe.ClaimedIdentifier to log in the users, e.g.

 FormsAuthentication.SetAuthCookie(response.ClaimedIdentifier, false);

so I just want to be sure, is this the one that is unique for each user, and it will never change? (so that I could save it in my DB and bind it to everything needed)

I see many SO posts says it's VerifiedIdetifier but the DotNetOpenAuth response object doesnt has this

---

Correct. ClaimedIdentifier is the unique string you should bind everything to. There's no such thing as a VerifiedIdentifier. If you can link to any of those SO questions/answers I'll correct them.