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What Are ‘Rollups’ (Optimistic and ZK) and How Do They Use Batching?

Rollups execute off-chain, batch transactions, and post them to Layer 1, using either fraud proofs (Optimistic) or validity proofs (ZK) for security.
Greeks.Live18.11.25

What Are ‘Rollups’ (Optimistic and ZK) and How Do They Use Batching?

Rollups are Layer 2 scaling solutions that execute transactions off-chain and then batch them into a single transaction that is posted to the Layer 1 chain. Optimistic Rollups assume transactions are valid and use a fraud proof period.

ZK-Rollups use cryptographic validity proofs (Zero-Knowledge proofs) to instantly prove the batch's correctness.

How Does ‘Data Availability’ Relate to the Security of Both Sharding and Layer 2 Rollups?
What Is the Fundamental Difference between Optimistic Rollups and ZK-Rollups?
How Do ZK-Rollups Improve Transaction Throughput on Ethereum?
Differentiate between Optimistic Rollups and ZK-Rollups

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