WTF is going on here? Mindtrust, remove your negative feedback. My account isn't for sale. And I also did not got hacked, but I'm going to change my password right now, just to be sure!
Is the PM in your outbox?
Check your IP log:
For now, I added this page where you can see your IP logs for the past 30 days:
https://bitcointalk.org/myips.php . You could pretty easily write a userscript to periodically check this and warn you if it's weird. (But don't scrape it on every pageload.)
I don't want to make older IP logs automatically accessible because that'd give a hacker a bunch of useful/sensitive information. But 30 days is probably not too harmful.
I dont think he needs to prove his innocence. The OP needs to prove guilt. He can report the PMs to a moderator who can authenticate the PMs.
I don't know that Admins would take the time to authenticate the PM's.
If bob123 gives me access to his throw away account
alice321, I'll confirm the PM (if it's there

).
I have some old addresses from 2015 or even 2013 to sign.
It has to be an address posted in an unedited old post.