KardiaChain uses Kardia Protobuf Message Format KPMF) to transfer data between peers. The KPMF is a cryptographic p2p protocol message suite which provides a general purpose transport and interface for applications to communicate with each other. The KPMF is designed to meet the requirements of decentralized applications, enabling nodes to transfer encrypted, serialized data with better performance. The goal of KPMF is to ensure the confidentiality and integrity of data when transferring between peers.