Technical Definition
Rollup
A rollup is a Layer 2 scaling method that bundles many transactions together before posting them to a Layer 1.
By Crypto University Editorial
Layer 2Layer 1Bridge
✦ Key Insight
Rollups make blockchain use cheaper and faster while still relying on the security of the base chain.
✕ Common Misconceptions
Ignoring withdrawal delays, bridge risk, and differences between rollup types.
Detailed Explanation
How It Works
Transactions happen on the rollup. The rollup compresses and submits proof or data to the Layer 1.
FAQs
Are rollups the same as sidechains?
No. Rollups usually inherit more security from the Layer 1.
In Practice
“Optimistic rollups and zero-knowledge rollups are common Ethereum scaling designs.”