wow, revealed a epic and unique esther at the same time

I think that post was more referring to the mechanics of the hack moreso than whether it is still around, which is what I think both Viaje and heronz are saying: that the item's potentials are already pre-existing, and that the revealing process doesn't have any effect.

Exactly.

With that in mind, could it be the resetting process that changes things? Could that be what he is referring to?

I'll assume by "resetting" you mean "fusing".

No, there's no possible way that fusing changes the way the Potential information is stored.
That would mean that the coders just created more work for themselves.
When you fuse two items, what you're technically doing is sacrificing two items to make a new one 'drop'.

Is the RNG server sided or client sided?

Is that a real question?

Of course it's server-sided.