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  1. Home
  2. /Glossary
  3. /Rollup
Back to Glossary
blockchain

Rollup

A Layer 2 scaling solution that bundles many transactions together before posting them to the main chain.

Definition

A Layer 2 scaling solution that bundles many transactions together before posting them to the main chain. Optimistic rollups assume transactions are valid unless proven otherwise, while ZK rollups use cryptographic proofs. Both make Ethereum much cheaper to use.

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Learn More About Rollup

GuideLayer 2 Solutions Guide

Related Terms

Layer 2

A secondary network built on top of a Layer 1 to improve scalability.

Scalability

A blockchain's ability to handle increasing transaction volume without degrading performance or raising fees.

Ethereum

A blockchain platform that enabled smart contracts and decentralized applications.

ABI

Application Binary Interface.

Account Abstraction

A way to make crypto wallets behave more like normal apps by turning every account into a smart contract.

ERC-4337

The Ethereum standard for account abstraction without changing the core protocol.

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