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Gas-Free Deposit (Coming soon)

Deposit USDC without holding any ETH. Sign one authorization — we submit the transaction and cover the gas, at no cost to you.

Eligibility

  • Self-custody wallet — e.g. MetaMask, OKX Wallet, or any wallet where you hold your own keys.

  • Native USDC on Arbitrum (0xaf88d065e77c8cC2239327C5EDb3A432268e5831), minimum 5 USDC. Bridged USDC.e is not supported.

  • Arbitrum ETH balance is 0. If you hold any ETH, please use the standard deposit flow.

Social login wallets are not supported — and don't need this feature. Simply transfer USDC on Arbitrum to your deposit address, and we complete the deposit automatically once the transfer is confirmed.

How It Works

  1. Enter your deposit amount (minimum 5 USDC).

  2. Review and sign the authorization in your wallet — an off-chain signature that costs no gas and moves no funds by itself.

  3. We submit the transaction on-chain and pay the gas.

  4. Your USDC is credited to your account, typically within 1 minute.

How We Keep It Safe

  • Verifiable recipient. Your signature authorizes only our Official Bridge Contract: 0xcDE3F99bCB4c91e19124e41730489EAeFEc24565. For more security details, read our bridge audit report.

  • Exact amount only. The authorization equals the amount you entered — never unlimited. No other assets in your wallet can be accessed.

  • Bound to your account. Even if someone else obtained and submitted your signature, the only possible outcome is that your deposit completes. Funds cannot be redirected.

  • Automatic expiry. Each signature is valid for 60 minutes, then becomes permanently invalid for everyone. If it expires, simply sign again — signing is free.

FAQ

Why don't I need ETH? You sign an off-chain authorization instead of sending a transaction yourself. We submit the transaction and pay the gas on your behalf.

What should I check before signing? The contract address in your wallet must be 0xcDE3F99bCB4c91e19124e41730489EAeFEc24565, and the amount must match your deposit. If either differs, reject the signature and contact support.

I have a small amount of ETH, but not enough for gas. Can I use this? Not currently — Gas-Free Deposit requires an Arbitrum ETH balance of 0. Please use the standard deposit flow.

Why is the minimum 5 USDC? Deposits below 5 USDC are not supported on our platform and cannot be credited. The same minimum applies here.

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