Don't you get it.

I shouldn't have to prove that they're fractional reserve.

They should have to prove that they aren't!

This is Eastern Europe and Bulgaria is one corrupt, poor country.

You really think these Bulgarian's are going to be sitting on millions and millions of bitcoins and aren't going to want to "borrow" or touch some of those coins. The temptation will be too great.

They could easily remove some of those bitcoin and then try to gamble with them, make more money, and then return the bitcoins safe and sound afterwards, and no one would ever no.

It it were my exchange and I had no over-site, I'd be tempted to do this myself.