Zcash was launched in October 2016 as a Bitcoin codebase fork with a 21 million coin supply limit, proof-of-work consensus, and optional zero-knowledge privacy features.

From the articleEuronext Paris suspends trading in CoinShares Zcash ETP on launch dayAlso in Euronext suspends CoinShares Zcash ETP months before EU privacy crackdown - Cryptopolitan