RPC stands for Remote Procedure Call. It is a protocol that allows a program to request services from a server located on another computer in a network. In the cryptocurrency framework, RPC is used for communication between clients and nodes.When users interact with a blockchain, they often use a wallet or an application that communicates with a node. This communication relies on RPC to send commands, query information, and receive responses. For example, a user might send a command to check their account balance or initiate a transaction.Most blockchain software provides an RPC interface, enabling developers to build applications that can interact seamlessly with the blockchain. The calls can include various operations like retrieving block information, managing accounts, and executing smart contracts, all of which help users and developers make the most of the blockchain’s capabilities. Overall, RPC serves as a vital link that facilitates the interaction between applications and the underlying blockchain network.