What is ZK Rollup?
Last reviewed 2026-05-03
First defined in: A Rollup-Centric Ethereum Roadmap (2020) by Vitalik Buterin
Cite / Read deeper: DeFi Intel zk rollups deep-dive
A ZK rollup uses validity proofs to attest correct execution to L1, enabling fast finality (no fraud-proof window). Major implementations: zkSync Era, Starknet, Polygon zkEVM, Linea, Scroll, Taiko (based, hybrid).
How it works
A ZK rollup uses validity proofs to attest correct execution to L1, enabling fast finality (no fraud-proof window). Major implementations: zkSync Era, Starknet, Polygon zkEVM, Linea, Scroll, Taiko (based, hybrid).
For deeper protocol-level mechanics, see the related glossary terms below or the linked DeFi Intel topic deep-dive.
Why it matters
ZK rollups eliminate the 7-day withdrawal window of optimistic rollups and offer post-quantum (STARK) and constant-time settlement.
Real-world examples
zkSync Era, Starknet, Polygon zkEVM, Linea, Scroll, Taiko (based hybrid), Aleo (privacy).
Related terms
Go deeper
Read the full DeFi Intel topic deep-dive or browse the complete crypto glossary.
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