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Chain Information

Chain ID

1993
Fun fact: 1993 is the year “Doom” was released, which revolutionized the first-person shooter genre.

Native Token

Ether (ETH)The same token used on Ethereum mainnet, but for testing purposes only.

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Network Endpoints

RPC Endpoint
https://testnet-rpc.b3.fun
Use this endpoint for standard HTTP requests to the B3 testnet.

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Block Explorer

B3 Explorer

Explore transactions, blocks, and contracts across B3 (including testnet).

Testnet Bridge

Bridge assets to B3 testnet for testing

Faucet

Get free testnet ETH for development and testing

Developer Tools

Discover tools and infrastructure for building on B3

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Adding B3 Testnet to Your Wallet

1

Open Wallet Settings

Open your wallet (MetaMask, Coinbase Wallet, etc.) and navigate to network settings.
2

Add Custom Network

Click “Add Network” or “Add Custom Network” depending on your wallet.
3

Enter Network Details

Fill in the following information:
4

Save and Switch

Save the network configuration and switch to B3 Testnet.
You’re now connected to B3 Testnet! You can start testing your applications.

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Why Use Testnets?

Testnets provide a safe, controlled, and efficient environment for testing and experimentation. Test networks, or testnets, serve as essential tools for you to test your smart contracts before deploying them to the mainnet, minimizing the risk of failures or vulnerabilities in live applications.

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Key Benefits

Risk-Free Testing

Test your smart contracts and applications without risking real funds or affecting live users.

Realistic Environment

Simulate mainnet conditions including network latency, gas fees, and transaction throughput.

Cost-Effective Development

Use free testnet tokens instead of expensive mainnet ETH for development and testing.

Learning Platform

Perfect environment for developers to learn and experiment with blockchain development.
By simulating the mainnet environment, testnets offer a realistic representation of real-world conditions, complete with network latency, gas fees, and other factors that impact the performance of smart contracts. This accurate representation enables you to identify potential issues, optimize your applications, and ensure the best possible user experience for your end-users. Moreover, testnets allow you to familiarize yourself with the B3 ecosystem and gain valuable hands-on experience, making them indispensable tools for both seasoned developers and newcomers to the world of blockchain development.

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Development Workflow

1

Get Testnet ETH

Use the testnet faucet to get free ETH for testing.
2

Deploy and Test

Deploy your smart contracts to the testnet and thoroughly test all functionality.
3

Debug and Optimize

Use the block explorer and development tools to debug issues and optimize performance.
4

Deploy to Mainnet

Once testing is complete, deploy your production-ready contracts to B3 mainnet.
Always test thoroughly on testnet before deploying to mainnet with real funds.

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Testnet vs Mainnet

Testnet:Mainnet:
Testnet: ETH has no real-world value - used only for testingMainnet: ETH has real-world value and costs money to acquire
Testnet: Development, testing, learning, experimentationMainnet: Production applications, real users, actual transactions