+2
One thing I've been talking about the last few years is the fact that nothing can really be verified in the GoT world: if Arya vanishes, she has no way to really prove she is who she says she is, no way to prove someone impersonating her isn't really her, etc. The best you can do is find someone who claims to have known them, who can vouch for them, and even that isn't anything close to proof. So I've been wondering how a lot of these things--identities, parentage, whatever--would shake out, even if they did come to light. There's no DNA tests. We might have something come out...and people just straight-up don't believe it.
Bran, however, could fix this. The fact that he knows so much could be used to establish credibility that would carry over into other pronouncements.