ON · 2026-11-12 15:59 UTC

zk-Rollups vs Optimistic Rollups: How Each One Works

Ethereum's popularity causes congestion, leading to higher gas prices and slower transactions, which affects its scalability. ZK Rollups batch hundreds of off-chain transfers into one transaction and return a SNARK validity proof to the main chain, avoiding the need to store full transaction data there. Optimistic Rollups assume submitted transaction data is valid, but use a dispute process with fraud proofs, where the submitter and challenger each risk forfeiting ETH bonds if misconduct occurs.

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