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Transfer from Soneium to Astar

1. Overview​

In this guide, you’ll learn how to transfer ASTR tokens from Soneium (L2) to Astar Network using the bridge on the Astar Portal and the Subwallet and Zerion wallets. To complete this tutorial, you’ll need:

  • A wallet that supports the Substrate format (we’ll use Subwallet)
  • A wallet that supports the EVM format (we’ll use Zerion)
  • ASTR tokens in your EVM wallet on Soneium
Wallet Setup

To set up your wallet on Soneium, follow → this guide, and use → this one for Astar Network.

Get ASTR tokens

If you want to acquire ASTR tokens on the Soneium using your local currency, use Alchemy Pay.

This guide assumes you already:

  • Have both wallets set up.
  • Hold ASTR tokens in your Soneium wallet.
  • Have some ETH to cover gas fees.

We’ll now walk through the full transfer process step by step.

2. Guide to Transfer ASTR from Soneium to Astar​

Step 1: Access the Astar Portal​

Go to our Astar Portal, the site where you can manage your funds and accounts within Astar Network.



Select the network, in this case, Astar (L1).



Step 2: Connect EVM wallet​

Click on Select wallet.



Choose the wallet you use, in this case, it will be Zerion, so we’ll click on Metamask to open the modal and connect it.

Metamask Mode

Zerion uses a mode called Metamask mode, where every request made to Metamask is handled by Zerion first. That’s why we click on Metamask, as the Zerion logo doesn’t appear directly.



Step 3: Go to Bridge to Soneium​

Go to the Bridge to Soneium section by clicking the button.



Step 4: Change source chain​

There, you'll see the Bridge section, which by default has Astar EVM as the source chain and Soneium as the destination. We’ll change this by clicking the button.



Once we switch the network, a message will appear in our wallet confirming the change, and we’ll now see Soneium as the source chain.



Step 5: Sign the Approve​

Enter the amount you want to transfer and click the Approve button to sign the permission and enable the bridge.

Max Amount

If you want to send your entire balance, check the Approve Max Amount box.



Step 6: Make the bridge​

Once you’ve signed the Approve transaction, the Bridge button will be enabled, allowing you to send your ASTR tokens from Soneium to Astar EVM.

Fee costs

Pay close attention to the bridge fee and the time the transaction usually takes.



If everything is correct, you’ll see a message confirming that the transaction was successfully executed, and you’ll be able to view your transaction in the block explorer.



Step 7: Send to Astar Substrate​

You’ll now see your updated balance on the Astar EVM network instead of Soneium. Congratulations, you’ve successfully completed the first part of the bridge!



Now let’s move on to sending your ASTR from Astar EVM to Astar L1 (Substrate). Click the Send button.



Here are 3 important steps to keep in mind:

  1. Enter the Astar Substrate address you want to send the funds to.
  2. Enter the amount you want to send.
  3. Make sure you’re not sending your funds to a CEX or DEX that doesn’t support Astar EVM/Substrate.

Then submit the transaction by clicking the Confirm button.

Behind the scenes, the Astar protocol handles the bridge from EVM to Substrate automatically.



Once you sign, if everything is correct, you’ll see a message confirming the successful execution and a link to view the transaction in the block explorer.



Now that we’ve sent the funds to Astar L1, let’s connect our Substrate wallet to complete the final steps before your funds become available.

Step 8: Connect to Substrate​

Click on the Wallet button.



Then go to the Substrate wallets section and select the wallet you’re using, in this case, we’ll use Subwallet.



Step 9: Withdraw the funds​

Once connected, you’ll see a new section showing the amounts you transferred and a Withdraw button. Let’s move the transferred amount to your available balance. Click the Withdraw button.



Choose the gas fee you want to pay and sign the transaction.



Once you sign, if everything is correct, you’ll see a message confirming the successful execution and a link to view the transaction in the block explorer.



Step 10: Complete the tutorial​

After a few seconds, you’ll see your amount reflected in the available section on Astar L1. Great job! You’ve successfully transferred from Soneium to Astar L1 with ease.



3. Video tutorial​

To wrap up, here’s a video tutorial that will guide you through the step-by-step process in case anything wasn’t clear. Feel free to ask your questions in our official Astar Discord.