Put card security first
Your CVV is the three- or four-digit code on your payment card. It exists to prove the physical card is present during a card-not-present transaction. Any site that asks you to submit a CVV to unlock bitcoin price comparisons, verify an account, or buy discounted crypto is a fraud risk. Legitimate exchanges collect card details only inside their own checkout flow, over an encrypted connection. Treat a request to type your CVV into a chat, email, form, or price-comparison page as a stop sign.
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Compare prices safely: procedural steps
- Open a separate browser tab and go directly to a licensed exchange you already use.
- Log in there, then look up the current bitcoin quote for your order size.
- Record the quote, the timestamp, and the fee breakdown in a notes file.
- Repeat the same lookup at one or two other regulated exchanges.
- Compare the total cost, not the headline price: add the trading fee, card processing fee, and withdrawal fee.
- Return to your chosen exchange and complete the purchase inside its checkout page only.
- Never re-enter your CVV on a page you reached from a comparison ad, social post, or unsolicited message.
Parameters to compare
- All-in cost: spot price plus fees plus spread.
- Card fee: many exchanges charge 3% to 5% for card-funded bitcoin buys.
- Settlement time and withdrawal limits.
- Licensing and deposit protection in your state.
- Whether the exchange supports 3-D Secure checks for card payments.
Pitfalls that expose your CVV
- Price comparison pages that ask for full card data before showing a quote.
- Offers to buy bitcoin below market price if you pay by card and share the CVV by chat.
- Anyone who asks for a photo of your card front and back.
- Marketplaces that advertise CVV datasets or card numbers. Buying or using those records is card fraud, and the data is often stale or bait.
- Pressure to act fast, use gift cards, or move the conversation to a messaging app.
If a charge appears that you did not authorize, call your card issuer at the number on the back of your card and ask for the fraud team. Then change your exchange password and enable app-based two-factor authentication.