I told new account WhitePhantom1980 that if the borrower repay the loan then I will give account back to borrower and he can solve this matter with him
If borrower failed to repay then 2 things I can do
1) If WhitePhantom1980 can sign message from old bitcoin address I will give him account after he repay the debt
2) If WhitePhantom1980 can't sign the message then I will put the account on auction he can bid there to get the account.
I don't trust any other proofs but only signed message
Because it is possible account was sold without signed message and previous owner now trying to get is back showing other proofs.
Seems like a good strategy. Probably the borrower want to scam you the collateral, claiming it was hacked.
If the account was not hacked, and I'm actually the borrower trying to scam the collateral, then why am I offering to repay the loan and interest to get the account back?
Not once did I suggest that the lender should give me the account without me covering the loan. Even if he had offered to do that, I would insist on paying him back the loan.