you don’t have to reveal your identity. Give the info you have. If it proves to be true, people will deem You a credible itk.
Someone who generally has info would not be looking for validation on a fans forum.
You will get people who from time to time get info (I knew about Laporte from a contact early on, however it was the time he didn’t sign (changed his mind)).
You will get others who have built up the reputation by providing information over a time period, but it is always a post and upto other people if they believe it or not.
Anyone who argues about it, is not. Trust me, I’m a ITK on this :-)