ZK-SNARK stands for Zero-Knowledge Succinct Non-Interactive Argument of Knowledge. It is a cryptographic method that allows one party to prove possession of certain information without revealing the information itself and without requiring interaction between the prover and the verifier.Layering refers to the use of multiple protocols or systems stacked on top of each other to enhance functionality, scalability, or security. Combining ZK-SNARKs with layering enables more efficient and private transactions across a network.In practical terms, a ZK-SNARK layering protocol can improve transaction privacy by allowing users to validate transactions without exposing their details, like amounts or sender information. This is particularly useful in public blockchains, as it helps maintain anonymity while still ensuring the network’s integrity.Such protocols can also enhance scalability by condensing numerous transactions into a single proof, saving on processing power and time. This combination of privacy and efficiency makes it a sought-after solution in the development of advanced blockchain applications.