rollup

Definitions

1. A layer-2 scaling solution that executes transactions off-chain but posts compressed transaction data (or validity proofs) back to the main chain. Optimistic rollups assume transactions are valid unless challenged; zero-knowledge rollups provide cryptographic proofs of correctness. Both inherit the security of the underlying layer 1.

   In plain English: A way to speed up a blockchain by processing transactions on a separate faster layer, then posting a summary back to the main chain for safekeeping.

   Example: After migrating to the rollup, the DEX cut gas costs by 90% while still settling to Ethereum for security guarantees.

Related Terms

• Blockchain
• sidechain
• zero-knowledge proof