RPC documentation entries
Explore practical RPC guides for developers, builders, and teams creating reliable Web3 applications and growing blockchain ecosystems with OnFinality.
What is an Ethereum RPC URL and how do you choose the right one?
An Ethereum RPC URL is the HTTP or WebSocket endpoint your dApp uses to communicate with the Ethereum blockchain. This article explains the components of an RPC URL, how to configu...
What Is Base Ethereum Layer 2 and How Do You Connect to It?
Base is an Ethereum Layer 2 network built with the OP Stack, designed to scale Ethereum transactions while inheriting its security. It uses optimistic rollups to batch transactions...
What is the TON Network RPC URL and How Do You Use It?
The TON Network RPC URL is the endpoint your dApp or bot uses to communicate with the TON blockchain. This article explains the official public endpoint, how to configure it in you...
How to Stake on BNB Smart Chain: A Step-by-Step Walkthrough
This walkthrough explains how to stake BNB on BNB Smart Chain (BSC), covering both delegation to validators and liquid staking options. It includes practical steps for connecting y...
What is JSON RPC Solana and how do you use it?
Solana's JSON-RPC API is the standard way for applications to interact with the network—querying accounts, submitting transactions, and subscribing to real-time updates. This artic...
How to Get and Use USDC on BNB Testnet
This article explains how to obtain and use USDC on the BNB Smart Chain testnet. It covers the difference between native and bridged USDC, how to get testnet USDC via faucets or by...
What is the Base testnet RPC and how do you connect to it?
Base testnet RPC endpoints let developers interact with the Base Sepolia testnet for building and testing Ethereum-compatible dApps. This article explains the chain settings, how t...
What is an Arbitrum node and how should you run or access one?
An Arbitrum node is a client that syncs Arbitrum One's rollup state and serves JSON-RPC requests for dApps, indexers, and trading bots. You can run your own node, use a public endp...
How to Choose a Solana WebSocket Infrastructure Provider
Solana WebSocket infrastructure powers real-time account subscriptions, transaction monitoring, and order book streaming. Choosing the right provider depends on your workload: publ...
Solana WebSocket API: How to Stream Real-Time Data from the Chain
The Solana WebSocket API lets you subscribe to real-time updates like account changes, transaction confirmations, and new slots without polling. This article explains the core subs...
Solana RPC Providers for Signed Transactions: API Keys and Security
When building Solana applications that submit signed transactions, choosing the right RPC provider and securing API keys is critical. This article explains how to evaluate Solana R...
What is a Bitcoin endpoint and how do you connect to the Bitcoin network?
A Bitcoin endpoint is a URL that lets your application talk to a Bitcoin node, usually over JSON-RPC. It is the entry point for reading blockchain data, building transactions, and ...
Ethereum
Solana
Polygon
Base
Arbitrum
BNB Chain
Polkadot
Optimism
