For digital products, the critical payment rule is simple: deliver only after verified settlement and deliver the purchase once. Coinvay hosted checkout can collect the transfer, while your own store controls the download, license or entitlement.
Prepare a trustworthy product order
Keep the product identifier, USD price, version and customer delivery details in your server-side catalog and order record. A browser can select a product but should not dictate a trusted price or download location. For example, a 19.00 USD icon pack purchase can create one pending order and one saved Coinvay invoice. The customer receives the checkout link, while the paid download remains protected until confirmation.
Decouple confirmation from delivery
Use authenticated invoice lookup or a properly verified webhook to accept payment. Save the signed payment or invoice identity and create one fulfillment job in a database transaction. A worker can then generate an expiring download link, issue a license or add an account entitlement. If email delivery fails, retry the delivery job rather than asking the buyer to pay again. Returning from checkout or pasting a plausible hash must not unlock the asset.
Test customer-support exceptions
Plan for a buyer who closes the browser, pays from an exchange, uses the wrong network or contacts support after quote expiry. Provide an order reference that lets staff investigate without requesting wallet secrets. Test duplicate notifications and a crash after a license is issued but before the worker records success. Define your own refund and access-revocation policy; the gateway cannot automatically remove a downloaded file. Keep Sandbox receipts separate from production download entitlements, because simulated and testnet success do not represent a real sale.
Practical checklist
- Use server-owned prices and a saved order-to-invoice mapping.
- Grant downloads or licenses only after trusted settlement evidence.
- Make delivery retries safe and define manual support for refunds and mismatched transfers.
Common questions
Can I reveal the download URL after the customer clicks Done?+
No. That click is not payment verification. Your backend must confirm the invoice and authorize the customer’s entitlement.
Does a gateway refund revoke a downloaded product automatically?+
No. A refund is a separate transfer and access policy. Download revocation or licensing changes belong to your product system.
Sources and further reading
Primary references and Coinvay product documentation. Check the linked pages for current details.
AI-assisted drafting, published by Coinvay. Examples are illustrative. Read our editorial approach.