zk-SNARK
Also known as: Zero-Knowledge Proof, Privacy Proof, zk Proof
A cryptographic proof that allows one party to prove it knows a value without revealing it, using zero knowledge.
zk-SNARK stands for 'Zero-Knowledge Succinct Non-Interactive Argument of Knowledge.' It's a cryptographic method that enables one party to prove possession of specific information without revealing the information itself or interacting with the verifier. zk-SNARKs are used in blockchain for privacy-preserving transactions and efficient verification. They are crucial in projects like Zcash, which use zk-SNARKs to enable shielded transactions, and in zero-knowledge rollups to validate off-chain computations. They offer succinctness (small proof size), non-interactivity (no back-and-forth), and strong privacy.