Arbitrum, like Ethereum, offers its own domain service called ARB ID, currently in public testing on the Arbitrum Goerli network. This guide walks you through purchasing a .arb domain step-by-step.
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What Is ARB ID?
ARB ID is Arbitrum’s decentralized naming service, similar to Ethereum’s ENS (Ethereum Name Service). It allows users to register human-readable domains (e.g., yourname.arb) for decentralized websites, wallet addresses, and more.
Key Features:
- Testnet Phase: Available on Arbitrum Goerli (Layer 2).
- Decentralized: Owned and managed via smart contracts.
- Compatibility: Works with Arbitrum-based dApps.
Prerequisites
Before purchasing a .arb domain, ensure you have:
- MetaMask installed with the Arbitrum Goerli network added.
- Goerli ETH (testnet ETH) for Layer 1 and Arbitrum Goerli ETH for Layer 2 fees.
- A wallet address to register the domain.
Step-by-Step Guide
1. Add Arbitrum Goerli to MetaMask
- Visit Chainlist, connect your wallet, and search for "Arbitrum Goerli."
- Click "Add to MetaMask" to auto-configure the network.
2. Claim Goerli ETH Test Tokens
Use the Goerli Faucet to get 0.2 Goerli ETH daily.
- Paste your wallet address and click "Send Me ETH."
3. Bridge Goerli ETH to Arbitrum Goerli ETH
- Navigate to the Arbitrum Bridge.
- Select Goerli → Arbitrum Goerli, enter the ETH amount, and confirm the transaction (takes ~15 minutes).
👉 Need help bridging assets? Learn more here
4. Buy Your .arb Domain
- Visit the ARB ID Testnet App.
- Search for your desired domain (e.g.,
baby2father.arb). - If available, select the registration period (e.g., 3 years for 0.01 ETH).
- Connect your wallet, approve the transaction, and confirm payment.
FAQ Section
Q1: Is ARB ID free during the testnet phase?
A: No, registration requires Arbitrum Goerli ETH for fees, but these are testnet tokens with no real value.
Q2: Can I transfer my .arb domain to mainnet later?
A: Yes, domains registered on testnet will likely be migratable to Arbitrum One (mainnet) after testing concludes.
Q3: What’s the difference between ARB ID and ENS?
A: ARB ID is specific to Arbitrum’s Layer 2, while ENS operates on Ethereum Layer 1. Both serve similar naming functions.
Q4: How long does domain registration last?
A: Domains are leased annually. You can prepay for multiple years (e.g., 3 years).
Final Notes
- ARB ID simplifies interactions with Arbitrum dApps by replacing complex addresses with readable domains.
- Always verify contract addresses and official links to avoid scams.
👉 Explore more Layer 2 solutions
For updates, follow @ARBIDname on Twitter.
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