Zcash is a privacy-focused cryptocurrency that originated from academic research in 2013, initially as the Zerocoin protocol-an experimental privacy extension for Bitcoin designed to allow anonymous transactions. Due to the computational intensity of the Zerocoin approach, the project evolved into Zerocash, and ultimately Zcash, with development led by Zooko Wilcox and the Electric Coin Company.
Launched in October 2016, Zcash distinguished itself by implementing zero-knowledge proofs, specifically zk-SNARKs, enabling users to perform shielded transactions that conceal sender, recipient, and amount, while also supporting transparent transactions similar to Bitcoin. The project underwent a unique "trusted setup" ceremony to ensure the cryptographic integrity of its privacy features, and in 2017, the Zcash Foundation was established to further support the ecosystem.
Protocol Upgrades: Zcash has implemented several major upgrades, including Halo 2, which significantly reduces the computational resources required for shielded transactions. The NU7 upgrade further enhances scalability and lays the groundwork for quantum resistance.
Address Types: Zcash supports both transparent (t-addresses) and shielded (z-addresses) transactions, offering users flexibility in privacy and compliance.
Zcash is built on a hybrid Proof-of-Work system, with 75-second block times. The protocol is open source, audited by third parties, and maintained by a dedicated security-focused engineering team. Regular audits and community oversight ensure the integrity and safety of the network.
