Soneium Wallet: Send, Swap and Bridge ETH on Sony's L2

How Soneium addresses work

Soneium uses Ethereum accounts, so your address is the same 0x address derived from your recovery phrase that Keylo shows for Ethereum and other EVM networks. No activation step, minimum balance or memo is required, and Keylo validates the checksum before you send.

If you use the Startale App or another app with a built-in wallet, check what kind of account it created. Some consumer wallets use smart contract accounts, whose addresses differ from a phrase-based wallet and exist only on the networks where they are deployed. To move funds from such a wallet to Keylo, send them on Soneium to your Keylo Soneium address rather than importing anything.

Balances are tracked separately on every network. ETH sent to your address on OP Mainnet or Base does not appear under Soneium, even though the address is identical. Keylo shows the network name next to every address so you can tell senders exactly which network to use.

Create a Soneium wallet with Keylo

1. 1

   Visit Keylo's registration page in any modern browser.

2. 2

   Enter your name, email and phone, set a password, then confirm your email.

3. 3

   Keylo generates a 12-word recovery phrase in your browser and encrypts it with a key derived from your password before storing the encrypted copy.

4. 4

   Reveal the phrase in Settings after re-entering your password and write it down offline.

5. 5

   Pick Soneium from the network list to view your address and balances.

How to receive ETH on Soneium

1. 1

   Open Soneium in Keylo and tap ETH or the token you expect.

2. 2

   Tap Receive to show your address, its QR code and the Soneium label.

3. 3

   Copy the address or let the sender scan the QR code.

4. 4

   On an exchange, choose Soneium as the network if it is listed. If not, withdraw ETH on a network the exchange supports, such as Ethereum, Base or OP Mainnet, and bridge across.

5. 5

   Look for the deposit in Activity, which links to the Soneium explorer.

How to send ETH on Soneium

If you are sending ETH to a friend who uses the Startale App, ask them to copy their Soneium address from the app and confirm they will receive on Soneium. Sending to a smart account address on a different network can leave funds out of reach of their app, even though Keylo would happily send it.

1. 1

   Select Soneium in Keylo and pick the asset to send.

2. 2

   Paste or scan the recipient's address. Keylo checks the checksum and warns when the address is a contract.

3. 3

   Enter an amount or tap Max; Keylo keeps enough ETH for the fee.

4. 4

   Choose a fee speed. Soneium is rarely busy, so normal is usually fine.

5. 5

   Review the network fee and exact amount in the summary, then confirm. Your browser signs the transaction.

Soneium fees explained

Soneium uses the OP Stack fee model with ETH as the gas token. Each transaction pays an execution fee, gas used times an EIP-1559 base fee plus a priority tip, and an L1 data fee for posting its compressed data to Ethereum as blobs. Soneium also sets a minimum base fee, so fees do not drop all the way to zero during quiet times.

For a simple ETH transfer the total is usually a small fraction of what Ethereum mainnet charges, while minting, trading or game actions that touch more contract state cost more. Because the data fee follows Ethereum's blob prices, Soneium fees can rise slightly when Ethereum is busy even if Soneium is not.

Keylo shows the full network fee in ETH before you confirm and adds nothing to normal sends. Keep a small ETH buffer on Soneium, because tokens and collectibles cannot pay their own transfer fees. A few cents' worth of ETH covers many ordinary transfers, and topping up early saves a trip back to an exchange when you want to move something quickly.

Tokens on Soneium

Soneium supports ERC-20 tokens, which Keylo can show and send. You will find ETH, wrapped ETH, stablecoins such as USDC and USDSC, a dollar stablecoin used across Startale's ecosystem, and tokens from fan, music and gaming projects. Each token has its own contract address on Soneium, different from the same asset elsewhere, so confirm contracts on the Soneium explorer before trading.

Entertainment chains attract impersonation. Tokens that use famous characters, artists or Sony brands without permission are common bait, and Soneium's IP policy means unofficial ones may be blocked from official tools. Ignore unexpected tokens, never approve a contract because a token name points you to a website, and buy only through projects you can verify.

Swap and bridge on Soneium, and withdrawals to Ethereum

Keylo's swap and bridge feature works on Soneium, which is handy because few exchanges support the network directly. You can bridge ETH from Base or OP Mainnet in a single step, or swap a token back to ETH before leaving. Routes are sourced from LI.FI's mix of decentralized exchanges and audited bridges, with THORChain for native cross-chain swaps. The quote shows the route, expected and minimum output and all fees, including any small service fee. Track the bridge until it lands; failed cross-chain routes are refunded by the protocol to the sender.

The official Soneium bridge follows OP Stack rules. Deposits from Ethereum arrive in minutes. Withdrawals are proven on Ethereum once Soneium's state is posted, then wait about seven days before you finalize them on Ethereum, and both Ethereum steps cost mainnet gas. Liquidity bridges skip the wait by paying you on the destination from their own funds.

Independent trackers note that Soneium's fault proof system is not yet fully functional, so withdrawals rely on a permissioned proposer posting correct state. That is a reason to understand the trust model before keeping large amounts on the chain, not a reason to panic about everyday balances.

Collectibles, memberships and approvals on Soneium

Much of Soneium's activity involves digital collectibles, fan memberships and game items rather than plain token transfers. Buying or listing these usually means approving a marketplace or game contract to move items on your behalf. Those approvals stay active until you revoke them, so a compromised or malicious app can later take everything the approval covers.

Before approving, check that the site address is the official one for the project, and prefer approvals for a single item or amount over unlimited ones when the app allows it. Free mint links shared in comments and direct messages are a common trap on entertainment chains: the mint is real, but the contract asks for permissions far beyond what a mint needs. If an approval request looks broader than the action you are taking, cancel it.

Soneium safety tips

• Confirm the recipient uses Soneium before sending, especially to app wallets with smart accounts.
• Keep ETH on Soneium for gas.
• Verify token contracts; IP copycat tokens are common and may be blocked.
• Check exchange support for Soneium per asset before depositing.
• Revoke approvals left over from minting or game apps you no longer use.
• Compare with OP Mainnet, and remember Keylo support never asks for your phrase.

Frequently asked questions