Zcash.

Zcash is a Layer 1 blockchain protocol launched in 2016, renowned for its pioneering use of zero-knowledge proofs, specifically zk-SNARKs (Zero-Knowledge Succinct Non-Interactive Argument of Knowledge). This cryptographic innovation allows users to send and receive transactions with complete privacy, shielding the sender, recipient, and transaction amount from public view on the blockchain. While Zcash offers shielded transactions, it also supports transparent transactions, giving users the option to selectively disclose payment details for auditing or compliance purposes. This duality provides a unique balance between privacy and accountability. The primary utility of Zcash lies in providing a robust solution for financial privacy in a public blockchain environment. This makes it attractive for individuals and entities who require confidentiality for their transactions, whether for personal security, business negotiations, or protecting sensitive financial data. The Zcash ecosystem is supported by the Electric Coin Company (ECC), responsible for its core development, and the Zcash Foundation, which promotes and protects Zcash for the public good. Its open-source nature and commitment to cryptographic research continue to drive innovation in the privacy-preserving cryptocurrency space.