what's interesting is that they use a =pecific kind of zero knowledge proof (ZKP) systems
called zk-SNARK.
I'll save you the full lengthly explanation, but the reason ... this is =nteresting is that:
1) ZKP (http://en.wikipedia.org/wiki/Zero-knowledge_proof) can be used =o proof statistically/computationally that a
user (A) knows something =ithout reveling the secret itself ... that is 'computable'.
What this means is that if we use zk-SNARKS/similar ZKP for our currency =e can enforce arbitrary rules on how the
currency is spent ("this