Zero-Knowledge Proof

A cryptographic technique that allows one party to prove a statement is true without revealing the underlying information. The verifier learns only that the proof is valid, not the inputs that generated it. In blockchains, ZK proofs verify that a batch of transactions was executed correctly without re-executing them on-chain, enabling the fast finality and lower cost of ZK rollups. ZK proofs are also used for privacy-preserving transactions and credential verification, proving eligibility without revealing personal data.