How to Pay for Research Peptides With Crypto: Chains, Fees, and Steps

The Peptide Lab accepts USDC on five chains (Ethereum, Base, Arbitrum, Solana, Starknet) plus native BTC, with no account, no KYC, and no email required to check out. Pick a chain, get a deposit address, send the exact amount within the payment window, and the order confirms automatically once the transaction lands on-chain. Every order also carries a guaranteed-delivery policy: a parcel lost or seized in transit gets re-shipped at no charge. Below: the checkout flow step by step, how the chains compare on fee and speed, and the questions that actually come up — wrong amount sent, privacy, what happens at customs.

The flow is the same regardless of which chain you choose:

1. Build your order. Add products to cart and go to checkout. No account creation, no login — each order is tracked by a unique order number instead.
2. Enter a shipping address. Delivery covers five regions — Australia, New Zealand, the United Kingdom, the United States, and the European Union — each billed in its own local currency.
3. Select a payment chain.Choose from Ethereum, Solana, Base, Arbitrum, or Starknet for USDC, or Bitcoin if you'd rather pay in BTC. Starknet is the recommended default because it carries the lowest added checkout fee.
4. Get a deposit address. USDC chains generate a payment address on the network you selected; Bitcoin generates a BTC payment quote instead. The address and amount are shown on the payment page along with a live countdown.
5. Send payment within the window. Orders must be paid within 24 hours of creation. Send on the exactnetwork shown — tokens sent on the wrong chain can't be recovered, so double-check before broadcasting.
6. Auto-confirmation.The payment page polls the chain automatically every 10 seconds. Once the funds arrive at the deposit address, the order status flips to "Paid" and processing begins. Confirmation time depends on the chain — typically a few minutes, faster on some networks than others (see the table below).
7. Shipped, with a delivery guarantee.Once paid, your order ships in plain, unmarked packaging. If it's lost or seized in transit, The Peptide Lab reships at no cost — one replacement per order.

No card details, no stored payment method, no account to manage — your order number is the only thing tying the purchase together.

All five USDC chains settle at the same price — the only difference is which network fee gets added at checkout. Bitcoin carries no added checkout fee but settles slower.

Ethereum is the most expensive of the group and mainly worth picking if your wallet setup is already Ethereum-native. Bitcoin skips the added checkout fee but takes the longest to confirm — the right tradeoff if you'd rather not touch USDC at all.

On-chain payments settle with finality: once a transaction confirms, it can't be reversed or charged back the way a card payment can. There's no account either, so there's no password or login history tied to a purchase — just the order number generated at checkout. That finality is also why the checkout flow asks you to double-check the chain and amount before sending: unlike a card payment, an on-chain transaction can't be disputed or clawed back once it confirms, so mistakes are corrected by issuing a replacement (see the guaranteed-delivery policy above), not by reversing the transaction.

For the full breakdown of what's on the vial versus what's on the Certificate of Analysis, see the COA guide. If you're still comparing vendors on more than payment method, the vendor evaluation framework covers the full five-criteria checklist, checkout included.