How does a crypto payment gateway actually work behind the scenes?
At a basic level, it sits between your checkout page and the blockchain. When a customer pays in crypto:
The gateway generates a unique wallet address/QR code for that transactionIt monitors the blockchain for confirmationsOnce confirmed, it either credits your account in crypto or auto-converts to fiat (depending on your settlement preference)It notifies your system (via webhook/API) so the order can be marked as paid
The tricky part is handling volatility during the confirmation window and making sure the conversion rate locked at checkout is honored. Good gateways also handle multiple blockchains under one API so you're not integrating separately for BTC, ETH, and stablecoins.
If you want to see how a full crypto payment gateway development process typically breaks this down, it's a decent reference for understanding the moving parts before you scope your own project.
Nice one. thanks.
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Bemiajackson posted:At a basic level, it sits between your checkout page and the blockchain. When a customer pays in crypto:
The gateway generates a unique wallet address/QR code for that transactionIt monitors the blockchain for confirmationsOnce confirmed, it either credits your account in crypto or auto-converts to fiat (depending on your settlement preference)It notifies your system (via webhook/API) so the order can be marked as paid
The tricky part is handling volatility during the confirmation window and making sure the conversion rate locked at checkout is honored. Good gateways also handle multiple blockchains under one API so you're not integrating separately for BTC, ETH, and stablecoins.
If you want to see how a full crypto payment gateway development process typically breaks this down, it's a decent reference for understanding the moving parts before you scope your own project.
That’s a good breakdown. One important difference is whether the gateway holds funds or sends them directly to the merchant’s wallet. With a non-custodial option like GrineoPay, merchants can receive crypto directly without relying on the gateway to hold their balance. I’d also pay attention to webhook reliability and underpayment handling, since both can cause real problems when automating order fulfillment.
