How to configure MetaMask for Kroma Network? (Layer 2 Yield)

MetaMask Network Configuration Steps

1. Open MetaMask browser extension and click the network selector located at the top of the interface.

2. Select “Add Network” from the dropdown menu to initiate manual chain setup.

3. Input the following parameters for Kroma Network: Network Name = Kroma, New RPC URL = https://api.kroma.network, Chain ID = 255, Currency Symbol = ETH, Block Explorer URL = https://kromascan.com.

4. Click “Save” to confirm and register the network within MetaMask.

5. Verify successful addition by selecting “Kroma” from the network dropdown and observing the updated chain identifier in the top bar.

Wallet Connection Verification

1. Navigate to a Kroma-native dApp such as https://app.kroma.network or https://kromaswap.xyz.

2. Click the “Connect Wallet” button and choose MetaMask from the provider list.

3. Approve the connection request inside the MetaMask popup window.

4. Confirm that your wallet address appears correctly and displays a non-zero ETH balance on Kroma.

5. Check transaction history on https://kromascan.com/address/YOUR_ADDRESS to validate on-chain activity visibility.

Token Import and Balance Display

1. In MetaMask, switch to the Kroma network using the network selector.

2. Click the “Import Tokens” button beneath the asset list.

3. Select the “Custom Token” tab and paste the Kroma-native token contract address: 0x6f47981d64a99b3c4141e5308851e605e2725229 (KRO).

4. MetaMask auto-populates Token Symbol and Decimals; verify they read KRO and 18.

5. Click “Add Custom Token” and confirm the import to make KRO visible in your asset portfolio.

Kroma Bridge Interaction

1. Visit https://bridge.kroma.network and connect your MetaMask wallet.

2. Ensure MetaMask is set to Ethereum Mainnet before initiating a deposit.

3. Enter the desired ETH amount, review gas fees, and click “Deposit to Kroma”.

4. Sign the Ethereum Mainnet transaction to lock funds in the canonical bridge contract.

5. Wait for finality confirmation—typically under 15 minutes—then switch MetaMask to Kroma to see credited ETH.

Frequently Asked Questions

Q: Why does MetaMask show “Unknown network” after adding Kroma?A: This occurs when the Chain ID field was entered incorrectly. Recheck that Chain ID is exactly 255 and not 2550 or 0x255.

Q: Can I use the same private key on Kroma as on Ethereum Mainnet?A: Yes. Kroma uses the same cryptographic account derivation scheme as Ethereum, so all addresses remain identical across both chains.

Q: Is it safe to approve token allowances on Kroma dApps?A: Only approve allowances for audited protocols listed on https://kroma.network/security. Unaudited contracts may exploit unlimited approvals.

Q: Why does my ETH balance appear zero on Kroma even after bridging?A: This indicates the bridge finalization step did not complete. Check https://kromascan.com/tx/TRANSACTION_HASH for the deposit transaction status and confirm block inclusion.