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zkSync Era

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description zkSync Era Overview

zkSync Era is a leading Zero-Knowledge (ZK) Rollup that provides high scalability and privacy for Ethereum. By using ZK-proofs, it allows for much faster transaction finality than Optimistic Rollups because transactions don't need to wait for a challenge period. It is designed for developers who want to build complex applications that require both the security of Ethereum and the speed/privacy benefits of ZK technology.

help zkSync Era FAQ

What is zkSync Era and how does it relate to Ethereum?

zkSync Era is a Zero-Knowledge (ZK) Rollup built on Ethereum by the development team Matter Labs. It batches transactions off-chain and submits cryptographic validity proofs to Ethereum's mainnet, reducing gas costs while inheriting Ethereum's base-layer security.

How does zkSync Era differ from Optimistic Rollups like Arbitrum and Optimism?

Optimistic Rollups rely on a fraud-proof challenge period—typically around seven days—before withdrawals are finalized, whereas zkSync Era uses validity proofs that can confirm transactions without that waiting period. This means users can generally move funds from the rollup to Ethereum L1 more quickly.

What programming language can developers use to build on zkSync Era?

zkSync Era supports Solidity, the same primary smart-contract language used on Ethereum, which allows existing Ethereum dApp developers to deploy with minimal changes. Matter Labs built a custom zkEVM to execute these contracts while generating the zero-knowledge proofs.

Does zkSync Era have a governance token?

Matter Labs launched the ZK token in 2024 to serve as a governance and protocol token for the zkSync ecosystem. Token holders can participate in decisions related to protocol upgrades and ecosystem development.

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