Zcash is the first blockchain system to use the zero-knowledge proof mechanism.  Zcash offers total payment confidentiality, while still maintaining a decentralized network through a public blockchain. Like bitcoin, Zcash (ZEC) has a fixed total supply of 21 million units. But unlike bitcoin, ZEC transactions automatically hide information of all senders, recipients, and value of transactions on the blockchain. Only those with the correct view key can see the contents. Users have complete control and can opt-in to provide others with their view key at their discretion. ZEC, a fork of bitcoin, retains the original bitcoin model and is rectified based on bitcoin 0.11.2 code version. There are two types of wallet address available in ZEC: transparent and private. Transparent addresses are similar to Bitcoin addresses in that all transactions ad amounts are publicly visible. With enhanced privacy, private addresses allow transactions to be anonymous and untraceable.