Credit card processors have a difficult relationship with research peptide vendors. Rather than pass that friction to you, we accept Bitcoin, and we give a 5% discount when you use it. This guide gives you the shortest path from where you are right now to completing a Bitcoin payment, whether that takes five minutes or a few days.
If you already use Cash App, Robinhood, or PayPal, you may be able to buy and send Bitcoin today without opening a new account. If you are starting from zero, it usually takes under an hour to get set up on a beginner-friendly exchange.
Why We Offer Bitcoin (and Why It Benefits You)
Bitcoin transactions do not route through the card networks that flag or block research vendors. There is no bank calling to verify the purchase, no payment processor deciding whether your order goes through. The transaction is between you and us, confirmed on the Bitcoin network, usually within 10 to 30 minutes.
On our end, Bitcoin also carries lower processing costs, which is why we pass 5% back to you automatically at checkout. No code needed.
You do not need a large amount. You only need enough BTC to cover your order total. Most people buying for the first time start with exactly what their order costs, plus a small buffer for network fees (usually under a dollar).
If You Already Use One of These Apps
Check this list before signing up for anything new. If you already have an account with one of these platforms, you are probably 5 to 15 minutes away from being able to send Bitcoin.
| App | How fast can you buy and send BTC? | Key steps |
|---|---|---|
| Cash App | Often minutes after basic verification | Tap Bitcoin tab → Buy BTC → Tap Send → Paste checkout address |
| Robinhood | Minutes once account is funded | Tap Crypto → Buy BTC → Transfer → Send to external wallet |
| PayPal | Quick if already verified | Tap Crypto → Buy Bitcoin → Send to external wallet (if available) |
| Venmo | Quick if already verified | Tap Crypto → Buy Bitcoin → Send to external wallet (if available) |
| eToro | 1–3 business days for full setup | Complete KYC → deposit → buy BTC → withdraw to external wallet |
Robinhood and PayPal: you must withdraw to an external wallet
PayPal and Venmo external wallet support
Starting From Zero: The Fastest Sign-Up Options
If you do not have any of the above accounts, the following exchanges are the most beginner-friendly in the US. All of them require a photo ID for verification (this is a legal requirement, not optional). Most complete verification in under an hour during normal hours.
Coinbase is the most widely used beginner exchange in the US. The interface walks you through buying your first Bitcoin step by step. Verification often completes in minutes, though it can take up to 48 hours if your submission goes to manual review. Once verified and funded, buying and sending BTC takes under two minutes.
Gemini is US-regulated and beginner-focused, with a clean interface that does not overwhelm you with trading features you do not need. Verification is often instant or takes a few hours. Good option if Coinbase is slow for any reason.
Kraken has a strong reputation for reliability and has been operating in the US since 2011. Basic verification usually takes a few minutes, with higher withdrawal limits requiring additional steps. For a single order, basic verification is typically sufficient.
Uphold supports multiple assets including fiat and crypto, with a straightforward interface. Verification usually completes within a few hours. A solid backup if the others have delays.
Which one should you use?
Prefer Not to Verify ID? (Advanced Path)
Some services allow buying Bitcoin with a card or bank transfer without the standard ID verification process. Guardarian is one of the more established options in this category. The flow is straightforward: select USD (or another supported fiat), select BTC, paste your destination wallet address (the one from our checkout), pay with a card, and the Bitcoin arrives at that address.
A few things to know before using this route. Your bank or card issuer may block or flag the transaction. Some cards that work fine for regular purchases will decline crypto purchases. Check your bank's policy, and have a backup option in mind if the card declines. Also check current regulations in your state, as rules around unverified crypto purchases vary.
This path works well if you already know your way around Bitcoin and just want a fast on-ramp. If you are buying Bitcoin for the first time, one of the verified exchanges above will be a smoother experience.
Step-by-Step: Paying With Cash App
This is the most common path for US customers who are not already on a crypto exchange. Cash App verification is usually fast, and the Bitcoin send flow is simple.
- Open Cash App and tap the Bitcoin tab at the bottom of the screen (it looks like a small BTC symbol).
- Enable Bitcoin if prompted. First-time users may need to complete a short verification step. This usually takes a few minutes.
- Tap “Buy.” Enter the dollar amount that matches your order total. Add a few dollars as a buffer for network fees. Cash App shows you the BTC equivalent before you confirm.
- Confirm the purchase. The BTC appears in your Cash App balance almost immediately.
- Go to our checkout and select Bitcoin as your payment method. You will be redirected to our secure payment page, which shows your order's exact BTC amount and a wallet address unique to your order.
- Back in Cash App, tap “Send Bitcoin.” Paste the wallet address from our payment page, or scan the QR code if you are on a second device. Enter the exact BTC amount shown.
- Confirm and send. Cash App will ask you to confirm the recipient address and amount. Double-check both, then confirm. The transaction is usually confirmed on the network within 10 to 30 minutes.
Use the QR code if you can
Step-by-Step: Paying With Robinhood
Robinhood is one of the most widely held brokerage apps in the US, and many users already have a funded account from stock trading. If that is you, adding Bitcoin is straightforward since crypto lives in the same app with no separate sign-up.
- Open Robinhood and tap the search icon. Search “Bitcoin” or navigate to the Crypto tab if your version shows one.
- Tap Bitcoin (BTC) from the results to open the BTC detail page.
- Tap “Buy.” Enter the dollar amount you need for your order. Add a few dollars as a buffer to cover the Bitcoin network fee. Robinhood shows you the BTC equivalent before you confirm.
- Confirm the purchase. The BTC appears in your Robinhood crypto balance immediately.
- Go to our checkout and select Bitcoin as your payment method. You will be redirected to our secure payment page, which shows the exact BTC amount and a wallet address unique to your order.
- Back in Robinhood, tap your Bitcoin holding, then tap “Send.” If you have not sent crypto before, Robinhood may ask you to enable crypto transfers first. This is a one-time step that typically takes a few minutes.
- Paste the wallet address from our payment page into the recipient field, or scan the QR code. Enter the exact BTC amount shown on the payment page.
- Review and confirm. Robinhood shows the recipient address and amount before sending. Check both carefully, then confirm. The transaction typically confirms on the Bitcoin network within 10 to 30 minutes.
Robinhood crypto transfers: one thing to check first
Step-by-Step: Paying With Coinbase
If you are starting from zero, Coinbase is the most guided experience available. Plan for about 30 to 60 minutes the first time, mostly spent on verification and funding your account.
- Create a Coinbase account at coinbase.com. You will need an email address and a photo ID. Follow the verification prompts. Most accounts are approved within a few minutes.
- Add a payment method. A debit card is the fastest option for immediate availability. Bank transfers are cheaper but can take 1 to 3 days to settle. If you need Bitcoin today, use a debit card.
- Buy Bitcoin. On the home screen, tap “Buy.” Select Bitcoin, enter the dollar amount for your order plus a small buffer for fees, and confirm.
- Go to our checkout and select Bitcoin. You will be redirected to our secure payment page with the exact BTC amount and your order's unique wallet address.
- In Coinbase, tap “Send & Receive” and then “Send.” Select Bitcoin, paste the wallet address from our payment page, and enter the exact BTC amount shown. Review the network fee (usually under $1) and confirm.
- Wait for confirmation. Bitcoin transactions typically confirm within 10 to 30 minutes. Our system detects the payment automatically and processes your order once confirmed.
What Happens at Our Checkout
When you reach the payment step and select Bitcoin, you will be redirected to our secure payment page. That page is generated specifically for your order and shows:
- The exact amount of BTC to send (calculated at current exchange rate)
- A Bitcoin wallet address unique to your order
- A QR code for that address
- A countdown timer showing how long the rate is locked
Send exactly the amount shown to the address shown. Do not round up or down. Once the network confirms the transaction, your order moves to processing automatically. You do not need to notify us.
Send the exact amount, and send it once
If you have any issues completing a Bitcoin payment, contact us before retrying. Our support team can confirm the correct address and current order status.