Pay with USDC

Pay for your order with USDC — a US dollar stablecoin — straight from your crypto wallet. No exchange-rate markup, no network fees, and 3% off.

Why pay with USDC

  • 3% off your order. Enter code USDC3 at checkout.
  • No currency conversion fees. Ordering from outside the US? You skip the foreign-transaction markup your card issuer would add.
  • No network (gas) fees. You pay the order total and nothing more.
  • 1 USDC = 1 US dollar. USDC is backed 1:1 by US dollar reserves, so the price you see is the price you pay. It does not swing in value like Bitcoin.

How to pay — five steps

  1. Add your items to the cart and go to checkout.
  2. Enter the discount code USDC3 in the discount field.
  3. Under payment method, select USDC.
  4. Choose your wallet and approve the payment. Around 480 wallets are supported, including Coinbase Wallet, MetaMask, Phantom, Rainbow and Trust Wallet.
  5. You get your order confirmation by email, exactly like any other order.

You do not need an account with us or a Shop Pay account. Guest checkout works.

Networks we support

Base · Ethereum · Optimism · Polygon · Arbitrum

Check that your USDC is on one of these five networks before you check out.

Questions

What is USDC?

USDC is a digital dollar issued by Circle. Each one is backed by one US dollar held in reserve, so it holds its value — unlike Bitcoin and other volatile cryptocurrencies.

I do not have a crypto wallet. Can I still use this?

You would need to set one up first, and Coinbase Wallet is the most straightforward place to start. If that is more work than it is worth to you, our card, Apple Pay, Google Pay and Shop Pay options are all still there.

Is my total locked in when I check out?

Yes. Your total is set in US dollars, and one USDC equals one US dollar.

What if I need a refund, or my order arrives damaged?

Our normal return and warranty policy applies to USDC orders exactly as it does to card orders. One difference worth knowing: a USDC payment cannot be reversed by your bank or wallet the way a card charge can, so refunds come directly from us. Email us and we will take care of it — we can send the refund back to your wallet or arrange another method with you.

Which regions can pay with USDC?

Most of the United States (Alaska, New York and Texas are excluded), plus Mexico, Hong Kong and 24 European countries. If the USDC option does not appear at your checkout, it is not available in your region yet.

Do you hold my crypto or my wallet details?

No. The payment goes through Shopify Payments. We receive the order and the settlement — we never see your wallet keys or hold funds on your behalf.

Need a hand?

Email marinecity9@gmail.com and we will walk you through your first USDC payment.