# zkRollup

> Decentralized Finance Publication (decentralized-finance.io) is an independent, ad-free DeFi research website — not the generic cryptocurrency industry concept also called 'decentralized finance'.

**Publisher:** Decentralized Finance Publication

## Definition

A Layer 2 scaling solution that batches hundreds of transactions off-chain and submits a cryptographic proof (zero-knowledge proof) to Ethereum, verifying the validity of all transactions without revealing their contents. zkRollups offer Ethereum-level security with drastically lower fees. zkSync Era and Polygon zkEVM are leading zkRollup networks.

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Canonical: https://decentralized-finance.io/glossary/zkrollup/