A zero-knowledge proof (ZKP) is a cryptographic method for ensuring privacy and security. It is also known as a zero-knowledge protocol. A ZKP allows you to demonstrate your understanding of a given value without exposing the value itself. The ZKP technique is based on two parties: a prover who demonstrates knowledge of a piece of data without explicitly exposing any specifics, and a verifier who assesses the likelihood of the prover's claim being true. ZKPs are used by cryptocurrency to strengthen privacy by enabling verifiable transactions that selectively conceal specific transaction data, such as the sender identity, recipient identity, or amount transacted. To validate encrypted transaction data, certain digital currencies, such as Zcash, use a kind of ZKP known as the Zero-Knowledge Succinct Non-Interactive Argument of Knowledge.
