Add Avalanche Networks to MetaMask
NCRB is live on the Avalanche Fuji testnet and will launch on Avalanche C-Chain mainnet. Add both networks to MetaMask so you can switch between them.
Avalanche Fuji — Testnet
Fuji is the Avalanche test network. Use this to explore the NCRB platform, submit test certificates, and try the marketplace — all without real money.
Add Fuji to MetaMask
- Open MetaMask and click the network selector at the top (it may say "Ethereum Mainnet")
- Click Add a custom network (or Add network → Add a network manually)
- Enter the following details:
| Field | Value |
|---|---|
| Network name | Avalanche Fuji Testnet |
| New RPC URL | https://api.avax-test.network/ext/bc/C/rpc |
| Chain ID | 43113 |
| Currency symbol | AVAX |
| Block explorer URL | https://testnet.snowtrace.io |
- Click Save — Fuji will appear in your network list
Get Testnet AVAX (Free)
You need a small amount of AVAX to pay for gas fees on Fuji. Get free testnet AVAX from the Avalanche faucet:
- Go to the Avalanche Faucet
- Select Fuji (C-Chain)
- Paste your wallet address
- Click Request — testnet AVAX will arrive in your wallet within seconds
Testnet AVAX has no real-world value. It is only used to pay gas on the Fuji network.
Avalanche C-Chain — Mainnet
The Avalanche C-Chain is the production network. This is where real assets and real USDC will be traded after the NCRB mainnet launch.
Add Avalanche C-Chain to MetaMask
MetaMask may already include Avalanche C-Chain in its built-in network list:
- Open MetaMask and click the network selector
- Click Add a custom network → Popular custom networks — look for Avalanche Network C-Chain
- If found, click Add and confirm
If it is not listed, add it manually:
| Field | Value |
|---|---|
| Network name | Avalanche C-Chain |
| New RPC URL | https://api.avax.network/ext/bc/C/rpc |
| Chain ID | 43114 |
| Currency symbol | AVAX |
| Block explorer URL | https://snowtrace.io |
- Click Save
Get Mainnet AVAX
To transact on Avalanche C-Chain mainnet you need AVAX to pay gas. You can acquire AVAX from:
- A centralised exchange (Coinbase, Binance, Kraken) — withdraw to your MetaMask address
- A cross-chain bridge (e.g. the Avalanche Bridge) if you hold assets on Ethereum
Switching Between Networks
- Open MetaMask
- Click the network selector at the top
- Select Avalanche Fuji Testnet (testing) or Avalanche C-Chain (mainnet)
The NCRB dApp will automatically detect your active network and display the corresponding contracts and assets.
What's Next?
- Add XRPL EVM Networks — set up the other supported network
- Add USDC to Your Wallet — required to purchase credits on the marketplace