You are claiming that you are taking coins from people, sending them to exchanges, trading with them, and then sending the profits back.

You could go part of the way to showing that this was true if there was a public ledger showing all of the transactions. If only there was a public way to show that all the coins people gave to you were sent to exchanges, and that all of your payouts are coming from exchanges. If only there was some way to track the chain of coins going from your investors to you to the exchanges back to you and back to the investors.

This wouldn't be perfect, since we still have no proof that you are doing what you say you are doing, but I'm sure you are working on a way to be transparent and prove that to everyone.

Showing that all your coins are actually going to and coming from would be a good start on the path to transparency, if only that public ledger existed...