RPC (Remote Procedure Call)
Quick Answer
RPC is the protocol for applications to interact with blockchain nodes. RPC providers (Alchemy, Infura) ensure reliable payment processing uptime and transaction speed.
Full Definition
RPC is a protocol that allows an application to execute functions on a remote server. In blockchain, RPC nodes provide the interface for submitting transactions, querying balances, and reading smart contract state. RPC providers (Alchemy, Infura, QuickNode) offer scalable node infrastructure so payment applications do not need to run their own nodes. RPC reliability directly affects payment processing uptime and transaction confirmation speed.