I dunno. We have ascertained that the sumbich died based on said data.
I think a good chunk of our confidence comes from the fact that JimRob posted this announcement, and clearly thinks he knew enough about Harry to believe the message he received and give a strong positive endorsement of Harry. Given that JimRob has access to registration and donation information that we don't, I'll take his word for it. JimRob has a huge amount of experience with FR posters pretending to be someone they aren't, and I suspect he's quite good at sniffing them out by now.