nothing is perfect in this world, but if it happens, it will take a very long time, when they tried to hack her, the bitcoin users also fix all the weaknesses that exist within bitcoin, all of this has always kept a continuous
well bitcoin seems to be perfect currency right now, but it has to be updated from time to time, because the thing that is not evolving with time is going to be replaced by something else, like cash is going to be replaced by bitcoins
to me i think now bitcoin is becoming one of the most best and strongest currency of the world and the reason is that the number of bitcoin users are continuously increasing which is really increasing the support of bitcoin and making bitcoin more and more as time pass. i am hopeful that in future bitcoin will be ever best currency of the world.