The Old Gods are Real, and have been shown in the story

[Lord Klax Stark]

Hey all, during my current reread of dance I came across a quote that shows that there are multiple still living greenseers in the cotf cave. Since it is the children's belief that the weirwoods themselves are the old gods, and that these greenseers as shown in the chapter are very much weirwoods, I assert that they are the old gods of the North. What is more, since there is textual proof that there are more greenseers active than just bloodraven, it sheds new light as to just how many different subplots these greenseers aka old gods are involved in. The quote showing all of this is at the bottom of Page 454 and the top of page 455 of dance.

[Whitering]

Ya, but we know they are not Gods, like R'hllor, though being able to see through the past and anywhere (? maybe just close to weirwoods), is pretty great.