Also known as a "zero knowledge (ZK) proof," a validity proof is used by zero knowledge rollups (zk-Rollups) on Layer 2 blockchains to prove that the data summarized on the Layer 1 chain are valid.

A cryptographic protocol that allows a party to prove possession of information without revealing the details. Zero-knowledge proofs are one of two types of "rollups" used in Layer 2 blockchains to ...