Due to the loss of our database to the hacker, we have absolutely no way of showing who owned what wallet address without the deposit confirmation emails.
These emails contained your username your, deposit address, the amount of the deposit and the TX ID.
Okay Charles, do you realize there's no reasonable way I could make 1118 screenshots of emails even if I had those? It takes days and nights.
Usernames and emails are largely irrelevant in crypto world. Where you should start is your main hot wallet address where all deposits eventually ended and all withdrawals came from. It was only one for most coins listed on your exchange. Doesn't take much chain analysis to locate it. Then you compile a list of addresses which funded it. Every such address belongs to one user of your exchange. You make another list of external addresses which were actually used to send coins to your exchange, one list per user. All of it can be scripted. Every user has to prove ownership of his addresses. The universal way of doing it is by signing a message like "User XXX email YYY claims address ZZZ used for Altilly deposits" with his private key. You verify it with the public key, match deposit tx's and amounts. That's all.