Who specifically promoted you to black belt? It should be a person (or persons), not an organization or academy, which is what it now says in your promotion history.

he seems well known in Brazil, so really doesn't strike me as someone who would be faking lineage. Was he perhaps promoted too BB by someone else and later joined Carlson?

Who promoted him to BB if not Carlson? If Carlson, is there an explanation why he's not on the list that Carlson wrote shortly before he died, to avoid future rank claims from false Carlson BB:s? Does he have any alternative names etc? Googling him,