Stablecoins

USD Coin (USDC) with an offline key

USD Coin (USDC) is a stablecoin issued by Circle, backed by cash and short-term US government bonds and redeemable one for one in US dollars. On Arbitrum and Optimism, the older bridged version is listed separately as USDC.e.

Locker Protocol Wallet shows your USDC balance in the browser and sends every USDC transfer to Locker Vault, an offline device, to be signed.

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Where the wallet supports USDC

Each contract above was checked on-chain before it was added to the wallet. Tokens with the same name are easy to create: the wallet shows the USDC logo only at these addresses, and any other token calling itself USDC appears without it.

Receive and send USDC

1

Set up the wallet

Install Locker Protocol Wallet in Chrome or Brave, and Locker Vault on a spare phone kept offline. Your addresses reach the extension by QR code.

2

Receive USDC

Give your address on the network the sender uses. The network matters: USDC sent on one network does not arrive on another.

3

Send USDC

Enter the recipient and the amount in the extension and check the network fee, then scan the request with the Vault, read it there and approve.

A transfer is paid in the network's own coin, even when you send a token: keep a little of the coin shown in the table.

USDC: questions people ask

Which network should I use to receive USDC?

The one the sender uses. When you withdraw from an exchange, choose the same network in the withdrawal form as the address you give. If they do not match, the funds may not arrive.

Does Locker Protocol Wallet charge a fee to hold or send USDC?

No. Holding costs nothing and a transfer costs only the network fee. The wallet's own fee applies to swaps and bridges made in the extension, at most 0.25%, and it is shown before you sign.

How do I avoid a fake USDC token?

Compare the contract with the one listed here or on the issuer's site. A token that appears in your wallet unasked, calling itself USDC, is often bait for a scam.

Where is the private key that controls my USDC?

On Locker Vault, the offline device, derived from your recovery phrase. The extension on your computer only knows your addresses, so malware there cannot move your USDC.