It seems to me, that if there are vulnerabilities or potential backdoors, the incentive would be huge for hackers and coders to find these vulnerabilities and exploit them.
There is no backdoors in the official version of the program as far as I know. Only the Gestapo/NKVD will be allowed to fully access to your digital information. Little swindlers will not.
good thing bitcoins can't be turned off by deactivating a chip...
It's only a matter of time. When the world accepts the cashless system you will be required to wear GPS/Cell tower trackable chip which will be always with you and always online connected to the supercomputer.
I think you place way too much faith in our adversary.
The powers that be are dangerous and evil, but they are human, they screw up and they can be thwarted.
Case in point... the internet. They underestimated people. They thought we would just use it to look at porn and cat pictures while they could categorize us and identify subversives.
The problem was, people have a hell of a lot more to say than they ever imagined. We are using their own control grid to mess up their shit, and they are getting scared.
They are now looking for ways to reign it in, but they won't be able to. Not without mass revolt.