JSON-RPC is a remote procedure call protocol that uses JSON (JavaScript Object Notation) to encode its calls and responses. It allows communication between a client and a server by sending requests that include specific methods and parameters.In the context of blockchain and cryptocurrency, JSON-RPC enables clients to interact with nodes, which are servers that maintain a copy of the blockchain. Through JSON-RPC, users can execute commands such as querying balance, sending transactions, or retrieving block information. A significant advantage of JSON-RPC is its simplicity. Requests are made using straightforward HTTP methods, such as POST, which makes it easy to integrate with various programming languages and platforms. Overall, JSON-RPC serves as a vital tool that helps developers build applications that can interact with blockchain networks efficiently, facilitating tasks that enhance user experience.