chainslist: choosing a mainnet, testnet or RPC

A wallet connects to a mainnet for live transactions, a testnet for development, or an RPC endpoint to communicate with either network; chainslist surfaces the network details needed to make that choice. ChainList’s network cards show a chain ID, native currency and RPC URL, and its page lets users include testnets in results.

The right network determines where a transaction is executed, while the RPC endpoint determines which service carries the wallet’s requests.

When should you choose a mainnet?

Choose a mainnet when you intend to use the live network and its assets. ChainList identifies entries such as Ethereum Mainnet with a chain ID, currency and RPC URL; its current page lists Ethereum’s chain ID as 1, also written as 0x1. Wallets use the chain ID to identify the network when signing transactions, so a matching name alone is not enough to confirm the destination.

That distinction matters when adding a network manually or checking an existing wallet setup. Compare the chain ID with the network’s own documentation, then confirm that the displayed currency and endpoint belong to the intended chain. When checking the target chain, keep chainslist alongside the network’s own references: a familiar label does not establish that the wallet is pointed at the intended environment.

When is a testnet the better choice?

Use a testnet to develop or exercise a contract and application flow without submitting those transactions to the live network. ChainList describes testnets as separate networks for testing with valueless tokens and provides an “Include Testnets” option to show them in search results. Because a testnet has its own chain ID and RPC endpoint, switching only the wallet’s display name does not move activity between environments.

A testnet is useful for checking deployment, signing, and application behavior, but it does not reproduce every mainnet condition. In particular, testnet state and tokens are separate from mainnet state and assets. Before sending a transaction, check the selected chain ID in the wallet and make sure it matches the environment your development task expects.

What does the RPC choice change?

An RPC URL is the endpoint a wallet or application uses to request chain data and broadcast transactions; ChainList defines it in those terms. The endpoint is a connection to a network, not the network itself. Several RPC URLs can serve the same chain, so changing the endpoint does not by itself change the chain ID or move an account’s assets to another chain.

Different endpoints can vary in availability, latency, rate limits and access policy. A public RPC may be convenient for routine wallet use, while an application with sustained traffic may need a provider whose service terms and capacity fit that workload. The practical trade-off is convenience against control over the connection; whichever endpoint you select, verify that it reports the expected chain ID.

How do you pick the right network entry?

Start from the task, then compare the network details before connecting. ChainList’s page supports searches by network name or chain ID, and its cards provide the fields used to configure a wallet. Check these items together:

• Environment: select mainnet for live activity or a testnet for testing.
• Chain ID: match the intended network, including its decimal or hexadecimal representation.
• Currency: confirm the native currency shown for that network.
• RPC URL: choose an endpoint for the same chain and check it against the network’s own documentation.

For most readers, the better default is the network that matches the action: mainnet for live transactions, testnet for development, and an RPC endpoint selected for the connection requirements. Checking the chain ID alongside the endpoint catches the most consequential setup mismatch before a transaction is signed.