A Zero-Knowledge Layer is a part of a blockchain network that enhances privacy and scalability. It uses zero-knowledge proofs, a cryptographic method that allows one party to prove to another that they possess certain information without revealing the information itself.This approach enables transactions to be validated without disclosing user details or transaction amounts. As a result, users can maintain their privacy while still participating in the network.In addition to privacy, a Zero-Knowledge Layer can reduce congestion on the main blockchain. By handling some transactions off-chain and only submitting essential information to the main layer, it allows for faster processing and lower fees.Overall, a Zero-Knowledge Layer provides a means to improve user privacy and enhance the efficiency of the underlying blockchain, making it a valuable addition to various applications.