Very flimsy proof though, isn't it?

We are at:

Reasonable (articulable) suspicion: You have a suspicion which can be clearly explained in reasonable terms. More than a mere hunch; much more than a guess. But still no more than a suspicion.
Probable cause: On the face of things (at first sight, prima facie), the accused probably did it.
Preponderance of the evidence: Evidence of guilt outweighs evidence of innocence. Implemented via those balance scales you see carved into statues of blindfolded ladies. Note: This requires reasonable thoroughness in loading both sides of the scale, not just stuffing one side and jumping to a conclusion.
Clear and convincing evidence: Evidence of guilt is strong. Evidence of innocence is weak or nonexistent.
Moral certainty, beyond a reasonable doubt: The only way he didnt do it is if space aliens did it instead.

How did the "hacker" use the account unnoticed while the OP was still posting? Over the course of a week.

How would you notice this without checking your merit points? You wouldn't.

If I send merits to Lauda and Quickseller and claim I was hacked... that would make you two alts of each other.

Not necessarily.

This needs more evidence I think.

Sure, and/or xandry needs to get fired and the Russian section killed. Simpler solution.

Keep this in mind:

Username AZVAL using this 0x6B8ce93F4bFaeB28e21b50E7FeD02751adA84b66 address to join IZX bounty campaign (signature) #11.
And the same address used by the person whose username is

1. ZET40 (DIVM bounty) https://bitcointalk.org/index.php?topic=2219869.msg29790860#msg29790860
2. ALMAZ76 (BABB Bounty) https://imgur.com/bZ8HvuT https://docs.google.com/spreadsheets/d/1i0L4_Unvkivsa9Bu9LHSvAoNAQR1pA0wosY7z575CSE/edit#gid=1298769197 (#97)

Also you can check ALMAZ76 Merit stat he received merits from ZET40.

These two are done.