Zcash, formerly ZeroCoin, is the first privacy driven cryptocurrency that is inspired by bitcoin and combines its technique, but has its own independent blockchain. This crypto is the result of a collaboration between the ZeroCoin team and technical experts in the field of cryptocurrency. Zcash uses the zk-SNARK technique, which stands for: zero-knowledge Succinct Non-interactive ARgument of Knowledge. This technique refers to a pilot construction in which it can be demonstrated that certain information, such as a secret key, is in the possession of the sender without revealing that information, and without interaction between the sender (evidence) and recipient (verifier). Apart from the fact that Zcash is driven by anonymity, the user can choose to keep the content and information of the sender and receiver out of the radar.