Glossary
RPC Node
A blockchain node exposing a JSON-RPC interface that lets wallets, dApps, and indexers query state and submit transactions.
Every interaction with a blockchain from outside the node software goes through an RPC endpoint: a JSON-RPC API exposed by a full node or by a hosted provider (Infura, Alchemy, QuickNode, Ankr).
Wallets use RPC to fetch balances, estimate gas, and broadcast signed transactions. Indexers stream events through RPC. The endpoint is a performance and trust dependency: a slow RPC means a slow dApp; a malicious RPC could feed back false balances or hide pending transactions.