Privacy on blockchains
The lack of privacy or more broadly confidentiality on blockchains is obvious and hampers the uptake and use of blockchains. The Privacy Blockchain approach is blockchain agnostic and focuses on interoperability while facilitating both privacy-preserving computations and coin agnostic transactions across blockchains.
Beyond ZK proofs
Privacy Blockchain supports generic privacy-preserving computations, which is what we call Zero-Knowledge (ZK) computation. While the more commonly known ZK proofs is a first important step to address privacy on blockchains, the very nature of ZK proofs limits its applicability to a single party (the prover) entering secret input to compute either true or false.