How about the GPG key? This is 2014, before the leak.
As, I said I don't have access to the old keys because my old hard drive was crashed and I was not able to recover it.
Still, I have access to the original email and also many people here already know me.
edit: theymos could possibly send an email to his last known email address.
The email I received returned:
Bad signature by Michael Marquardt
I would not be good with publishing my PMs publicly, but I can trust @qwk and send him a PM with a screen shot of my PMs from 2012 ( oldest once) which include my original email mentioned. And later he could confirm, what is my original email from much years.