Zcash
A privacy-protecting, digital currency built on strong science
...Thanks to a sophisticated zero-knowledge proving scheme, transactions can be verified without showing any information at all about the sender, receiver or transaction amount. Selective disclosure features are available for users who may need these for compliance or audit purposes.
Zcash was built by top cryptographers, with an underlying protocol based on the research of scientists from MIT, Technion, Johns Hopkins, Tel Aviv University and UC Berkeley.