Payment Link QR Code

Overview

What does Payment Link QR Code mean?

Payment Link QR Code is a machine-readable code that encodes a payment link, payment URI, address, amount, or related request data for wallet scanning.

How it works in practice

A payment-link QR code encodes a URL or payment URI so a customer can open checkout without retyping it. Its payload might contain a short HTTPS address pointing to a hosted invoice, or a chain-specific payment instruction understood by a wallet. The merchant must decide which format is being used and test it on common mobile wallets and camera apps. A dynamic QR can resolve to an invoice whose price and status change on the server; a static QR may point to a fixed destination with little order context.

Limits and common misunderstandings

Attackers can replace a printed QR with a lookalike link or attacker-controlled address. Scanning reduces manual entry errors, but customers should still check the domain, destination, asset and network before confirming payment.

Additional implementation considerations

Testing should distinguish QR codes that open an HTTPS page from those that launch a wallet directly. For page links, check URL domain authenticity, TLS and whether an old or reused QR could open an already-paid invoice. For payment URIs, verify percent encoding, asset precision, network interpretation and fallback when the wallet does not understand the requested scheme. The printed graphic should never be the only durable reference for the transaction or merchant order.

Related glossary terms

Payment Link Deep Link; Crypto Payment QR Replacement; Payment Address Validation