Prince's Estate Shoots Down Claim from Guy Who Thinks He Owns Prince's Music

Prince did not lose all rights to his music in a billion dollar bet ... according to Prince's estate, which is shutting down that exact claim from a random guy.

Bremer Trust bank, the administrator of the estate, responded to Rodney Dixon's rambling legal filing -- in which he says he won the rights to "Purple Rain," "Raspberry Beret," "Kiss" and every other song Prince ever wrote -- because they had a bet over whether Prince was the Messiah.

Yeah, it sounds crazy, and that's basically what Bremer Trust points out.

In the docs, obtained by TMZ, the bank says Dixon's claim is "frivolous," and he would need to have a written agreement to transfer ownership of Prince's catalog. Dixon admits all he has is a "verbal and implied agreement."

That doesn't cut it for the estate ... which wants the court to toss the claim. We've reached out to Dixon, but he hasn't gotten back to us.