Zcash (ZEC)
Zcash (ZEC) is a privacy-focused cryptocurrency launched in 2016. It is distinguished by its use of zk-SNARKs, a form of zero-knowledge proof, which allows transactions to be confirmed without revealing the sender, recipient, or amount involved.
Zcash offers users a choice between protected and transparent transactions, allowing flexibility according to users' confidentiality needs. Protected Zcash transactions ensure that details remain private. While transparent transactions are visible on Zcash's public blockchain, similar to Bitcoin.