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1st supports USDC deposits on Base only. You can deposit USDC in two ways:
  • From an external crypto wallet
  • Via bank transfer or card using Coinbase Onramper
Deposit through an external crypto wallet
  1. Navigate to your Assets page and click Receive
  2. Copy your 1st wallet address
  3. Open your external wallet and make sure it’s connected to the Base network
  4. Select USDC, paste your 1st wallet address, and enter the amount
  5. Send the transaction
Your USDC will appear in your 1st account within seconds after confirmation.

Deposit through Coinbase Onramper
  1. Navigate to your Assets page and click Receive
  2. Click Use Card to open Coinbase Onramper
  3. Enter the amount you want to deposit
  4. Choose your payment method:
    • Bank transfer
    • Apple Pay
    • USDC from your Coinbase account
  5. Complete the transaction
Your USDC will appear in your 1st account within seconds.

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Important information

USDC on Base only
Only USDC sent on the Base network will appear in your 1st account. Tokens sent on other networks will remain in your wallet but won’t be detected by 1st. Fast detection
Most deposits appear within seconds after confirmation on Base. If a deposit hasn’t appeared after a few minutes, please join our Discord and open a support ticket. No fees or minimums
1st does not charge fees on deposits or withdrawals, and there is no minimum balance. We also cover gas fees for withdrawals and in-app transfers. Your smart wallet, your keys
This is your personal non-custodial smart wallet on Base. Only you control the keys. You can export your keys at any time from Settings, and withdraw USDC to any Base address whenever you like. Reuse this address
Your 1st wallet address never changes and can be reused for all future USDC-on-Base deposits.