Understanding Mainnet and Testnet RPC & Chain Settings: A Comprehensive Guide
Introduction
As the blockchain ecosystem rapidly evolves, developers, auditors, and crypto enthusiasts alike increasingly rely on accurate RPC and chain settings to interact with both Mainnet and Testnet environments. Whether deploying smart contracts, building dApps, or auditing code, it is paramount to understand how to configure your wallet or app to communicate with different networks.
In this guide, we discuss Mainnet and Testnet RPC settings, how to use them, and where to find trusted configurations, including a reference to RDAuditors' Chain Info portal for timely updates on network data.
What Is Mainnet and Testnet?
Mainnet: The liveliness or production environment of a blockchain, where real transactions with real values occur. It is the platform where all final smart contracts and dApps get deployed.
Testnet: A testing environment for developers to simulate Mainnet behavior with test tokens. Testnets are indispensable for debugging and testing things without ruining real assets.
What Is an RPC?
RPC stands for Remote Procedure Call, a protocol that allows applications (like wallets, frontends, or scripts) to communicate with blockchain nodes.
Each blockchain network has its specific RPC URLs that connect clients to nodes, which in turn can:
Query balances
Broadcast transactions
Deploy smart contracts
Read blockchain data
Why Is Accurate RPC & Chain Settings Important?
Incorrect or outdated RPC/Chain data can lead to:
Unsuccessful transaction broadcasting
Wallet connectivity problems (i.e., in MetaMask)
Compromised security through a connection to a malicious node
Balance and gas fee estimations are inaccurate
Where to Find Chain Settings: Chain Info
RD Auditors Chain Info provides a trustworthy repository of verified Mainnet and Testnet settings for various EVM-compatible blockchains. You will find data such as:
✅ Network Name
✅ RPC URLs
✅ Chain ID
✅ Symbol
✅ Block Explorer URLs
✅ Faucet Links for Testnets
Why RD Auditors?
Security: Settings are audited and verified
Convenience: Ready-to-copy-and-paste configurations
Updated Frequently: Fast in keeping up with network upgrades and forks
