This account created by yourself or you buy it from others ? I really could not believe that a Sr.Member without knowing how to sign a message. Moreover, you want to give up this forum. So I think that buyers will be more careful.Because of those deals like this may never see the seller again.
Negative feedback is not affect them. LOL !
So, I think you need to give out for more information !
I'm assuming you guys mean signing a message with a bitcoin address, but i'm not sure what that has to do with proving the legitimacy of my account.
I have multiple ways of proving that this was my personal account.
Also i'm certainly not giving up on the forum, I just won't have time to be on the computer much in the coming months and I could use the money.