Ethereum vs Zcash

Key differences

Ethereum (ETH) and Zcash (ZEC) descend from different branches of cryptocurrency design. Ethereum, launched in 2015, is a global open-source platform for decentralized applications — a programmable blockchain where developers deploy smart contracts spanning DeFi, NFTs, and gaming. Zcash, launched in 2016, is a purpose-built payments currency focused on privacy: it was the first cryptocurrency to implement zero-knowledge encryption for fully shielded peer-to-peer transactions.

Consensus and supply diverge sharply. Zcash is a Proof of Work chain using the Equihash algorithm, with a Bitcoin-style fixed supply of 21 million coins and periodic halvings; about 16.9 million ZEC circulate. Ethereum secures its network through Proof of Stake and has no supply cap, with roughly 120.7 million ETH outstanding and issuance governed by staking rewards.

Their uses barely overlap. ETH is primarily fuel: it pays gas for every transaction and contract execution on a platform hosting many billions of dollars in application value, and it is staked to secure the network. ZEC is primarily money: its distinguishing feature is the option of shielded transactions that prove validity without revealing amounts, balances, or participants.

Notably, zero-knowledge proofs — the technology Zcash pioneered for privacy — are now widely used in Ethereum's scaling ecosystem for rollups. Still, the assets serve different constituencies: ETH powers a general-purpose application economy, while ZEC serves users who specifically need confidential on-chain payments.