Zcash (ZEC) is a proof-of-work cryptocurrency that uses zero-knowledge proofs to give users optional privacy. In practice, what Zcash offers is a single blockchain that supports both public and shielded transfers. The network is a fork of the Bitcoin codebase and keeps many Bitcoin-like properties, including a fixed supply schedule.
Core technology and blockchain architecture
Zcash uses zk-SNARKs, a type of zero-knowledge proof, to let the network verify a transaction without revealing its sender, recipient or amount. The chain supports two address types. Transparent addresses work like Bitcoin addresses, with balances and transfers visible on-chain. Shielded addresses hide transaction details while the network still confirms that the transaction is valid.
The shielded system has moved through several generations. Sapling, activated in October 2018, replaced the original zk-SNARK circuit. Orchard, activated with NU5 on 31 May 2022 at block 1,687,104, uses the Halo 2 proof system, which has no pool-specific trusted setup. Orchard proofs are about 1.5 KB, compared with roughly 192 bytes for the Groth16 system used by Sapling.
Primary use cases and real-world applications
Zcash is designed for private value transfer, protecting balances and payment flows from public view. Its selective disclosure feature lets users reveal transaction details when they need to satisfy compliance, accounting or audit requirements. Users can also make cross-border payments without exposing their transaction history on a public ledger.
Adoption of shielded transactions has grown. CoinDesk Research reports that the shielded share of transactions reached 59.3% in February 2026, up from about 30% in early 2025. CoinDesk Research attributes much of that growth to the Zodl wallet routing users into shielded pools by default through Unified Addresses.
Who is behind Zcash and where is it based?
Development of Zcash began in 2013 with Zerocoin research by Johns Hopkins University cryptographer Matthew Green and his students Ian Miers and Christina Garman. The 2014 Zerocash whitepaper, which Investopedia lists with seven authors, includes Eli Ben-Sasson, Alessandro Chiesa, Christina Garman, Matthew Green, Ian Miers, Eran Tromer and Madars Virza. Zooko Wilcox, a computer security specialist, co-devised Zerocoin and later led the company that built the protocol. Sources attribute authorship differently, so the full list of originators is not settled.
The mainnet launched on 28 October 2016. The Electric Coin Company (ECC) built the protocol for most of its early life, and it was donated to the Bootstrap Project, a US nonprofit, in October 2020. In January 2026, ECC's entire staff resigned after a governance dispute with the Bootstrap board. Former ECC staff then formed the Zcash Open Development Lab (ZODL), led by former ECC CEO Josh Swihart, which announced more than $25 million in seed funding in March 2026. Sources do not confirm ZODL's country of operation.
The Zcash Foundation is a US 501(c)(3) public charity founded on 14 February 2017. Its principal address is in McLean, Virginia. Shielded Labs is a donation-funded organization based in Switzerland, and it was founded as a Swiss association in December 2022. The protocol is decentralized, and its development is spread across several organizations rather than one legal entity.
Tokenomics
The maximum supply of Zcash is 21,000,000 ZEC. The circulating supply is 17,014,731 ZEC and the total supply is 17,016,944 ZEC, a gap of only 2,213 ZEC, so nearly all coins are already in circulation. ZecStats reports about 3.9% annual inflation at the current subsidy, and that rate falls with each halving.
Halvings occur every four years. The first took place on 18 November 2020, when the block reward fell from 12.5 to 6.25 ZEC. The next halving is scheduled for 23 November 2028 under the NU6.1 rules. The sources reviewed disagree on the current block subsidy, so this article does not state a figure.
Since NU6.1 took effect on 24 November 2025, block rewards are split as follows: 80% to miners, 8% to Zcash Community Grants, and 12% to a coinholder-controlled fund seeded by the Deferred Dev Fund Lockbox. That 12% allocation runs until the 2028 halving. In October 2026, Sean Bowe, Tachyon Group and Shielded Labs proposed ending the 8% grants stream. These are proposals only, and sources do not confirm an outcome.
Consensus mechanism and network security
Zcash uses proof of work with the Equihash algorithm, and 80% of the block reward goes to miners. Its security depends on the cost of acquiring enough hash power to attack the network. The privacy layer sits on top of this proof-of-work base chain.
Shielded Labs has proposed Crosslink, a finality gadget that would run alongside proof of work. The organization states that Zcash would not become a full proof-of-stake network under this design. Consensus-relevant changes are decided by coinholder votes. In a September 2026 NU7 vote, nearly 2.4 million ZEC, about two-thirds of eligible tokens, participated.
Key partnerships and ecosystem integrations
Zcash has been integrated into several wallets and swap services. Zashi 2.4, released on 1 October 2025, added decentralized swaps powered by NEAR Intents, which convert assets such as USDC, Bitcoin or Solana into ZEC. CoinDesk Research reports $1.5 billion in cumulative ZEC volume through NEAR Intents as of March 2026. Brave Wallet added shielded ZEC support on 2 April 2025, and Cake Wallet added Zcash support in version 5.7 on 15 January 2026.
Competitive advantages and unique value proposition
Zcash's main differentiator is that privacy is built into the protocol while transparency remains optional. Shielded transactions can be verified under consensus without exposing their details. Its Orchard pool was the first major production deployment of a SNARK without a trusted setup, according to zcash.school. Its capped supply and four-year halving schedule resemble Bitcoin's monetary design.
The asset's market position reflects this. The CoinStats market data shows a market cap of $21.28B, ranking #10. ZEC trades at $1,250.52, which is 60.82% below its all-time high of $3,191.93.
Current development activity and roadmap
NU6.2 activated on 3 June 2026 as an emergency update after Taylor Hornby of Shielded Labs disclosed a soundness bug in the Orchard proof circuit. NU6.3 introduced Ironwood, a new shielded pool, on 28 July 2026. Pine Analytics reports that holders moved 87% of Orchard's balance into Ironwood within five weeks.
NU7 is the next major upgrade. Zebra 6.4.0 lists it as tentatively scheduled for 5 November 2026, but sources reviewed do not confirm the final mainnet activation. NU7 includes ZIP 218, which reduces block target spacing from 75 seconds to 25 seconds, and ZIP 235, the Network Sustainability Mechanism, which removes about 60% of transaction fees from circulation until February 2031. Project Tachyon, a proposed scaling upgrade, still requires development and a security review before activation.