MPC and data privacy
note:
threshold cryptography is often superior to block chain in many situation, because block chain are often used as a way of encryption?!
https://en.wikipedia.org/wiki/Threshold_cryptosystem
+ joshua baron, DARPA
+ kurt nielsen, partisia blockchain
+ dan boneh, Stanford, https://crypto.stanford.edu/~dabo/pubs/pubs.html
+ mariana raykova, google/columbia
zero knowledge authentication, distributed prover
