Validity Rollup

Definition ∞ A validity rollup is a Layer 2 scaling solution for blockchains that executes transactions off-chain, bundles them into a single batch, and then submits a cryptographic proof of their correctness to the main chain. This proof, typically a zero-knowledge proof, mathematically guarantees the validity of all off-chain computations without requiring the main chain to re-execute them. This method significantly increases transaction throughput and reduces computational load on the base layer. It enhances scalability while maintaining strong security.
Context ∞ Validity rollups are a major topic in crypto news concerning blockchain scalability and the future of Layer 2 solutions, particularly for platforms like Ethereum. Reports often discuss the advancements in zero-knowledge technology and its application in these rollups to achieve high transaction speeds and lower costs. The ongoing development and deployment of validity rollups are closely watched as a critical component for the widespread adoption of decentralized applications.