That would be highly irresponsible of us to disclose publicly. I will say that everyone on this forum knows btc was a skeleton of a prototype that was built upon that which the creator never finished. So no one is really to blame but us, the users of btc, for not bothering to fix the issues. And lots of things that do not work have a monetary value, like a Kardashian or a government.

Cryptopia was given the same instructions as coinexchange, all we see is that they are too busy.