Can you show me that I cheated on the bounty for participating in a project with multiple accounts, ...
Well, as a matter of fact, marlboroza found a bunch of alt accounts cheating in bounty campaigns back in 2018.
https://bitcointalk.org/index.php?topic=2544574.msg36607089#msg36607089There are multiple interactions between these accounts and your ETH addresses. Who is he? Is he a family member, friend, roommate, cousin ... ?