Zcash

What it is

Zcash is a cryptocurrency built to answer bitcoin’s privacy problem: every bitcoin payment is public, forever. Launched in October 2016 by the cryptographer Zooko Wilcox and the Electric Coin Co, it grew out of academic work on the Zerocash protocol by researchers at Johns Hopkins, MIT and elsewhere. It keeps bitcoin’s blueprint, proof-of-work mining, halvings and a hard cap of 21 million coins, but adds optional shielded transactions that hide sender, receiver and amount. One memorable fact: in its first week, with almost no coins yet mined, ZEC briefly traded above $3,000 (CoinGecko), a record it has never revisited.

How it works

The core technology is the zk-SNARK, a zero-knowledge proof: a way of proving a statement is true, such as “this payment is valid and creates no coins from nothing”, without revealing any of the details behind it. Zcash has two kinds of addresses. Transparent ones behave like bitcoin’s and are visible to everyone; shielded ones encrypt the details on-chain, with validity guaranteed by the proofs. Users can also share view keys, allowing an accountant or auditor to see chosen transactions, privacy with a receipt. Early versions depended on a “trusted setup” ceremony to generate the system’s parameters; the Halo proving system, activated in the 2022 network upgrade, removed that requirement.

The story so far

Zcash launched with a Founders’ Reward directing a slice of mining rewards to its creators and early investors, later replaced by community-voted development funds shared between the Electric Coin Co, the Zcash Foundation and a grants programme, a recurring source of governance argument. For years the coin drifted while exchanges faced pressure over privacy assets in several jurisdictions. Then came a sharp revival: ZEC rose many times over through late 2025 as attention returned to financial privacy, one of that year’s strongest runs among established coins, while development shifted towards shielded-by-default use through the Zashi wallet.

Where it stands

As of late July 2026 ZEC ranks fifteenth by market value at about $8.3 billion (CoinGecko), trading near $494, far above where it spent the early 2020s though still below the tiny-supply spike of its 2016 debut. About 16.8 million of the eventual 21 million coins have been mined. What to watch: the share of ZEC actually held in shielded addresses, which is the truest measure of the privacy experiment; exchange and regulatory policy towards privacy coins in each region; and the next round of development-fund decisions. Zcash is the market’s running referendum on whether privacy people can switch on is privacy enough.