GlossaryAdvanced

Rollup

A Layer 2 scaling method that bundles many transactions before settling them on a base chain.

A rollup processes transactions off of a base blockchain, then bundles, or "rolls up," many of them into a single, compact piece of data that is submitted back to the base chain.

This reduces the amount of data the base chain needs to handle directly, which can lower costs and increase throughput while still inheriting security from the underlying base chain.

Examples

Rollups are a common Layer 2 approach used to reduce fees on busy base blockchains.
Different rollup designs use different methods to prove that the bundled transactions were processed correctly.