QR payments
QR presentation is not an implemented merchant API or payment-authority surface in the current runtime.
Availability
No QR creation, rotation, expiry, scanner, deep-link or QR settlement route is currently documented or implemented. Do not infer a QR contract from the public presentation page.
Safe integration boundary
A future QR client may display a merchant-created Payment Intent URL only after an explicit product contract exists. A QR code, scanner, browser redirect or client callback does not confirm payment; query the server Payment Intent and rely on server-observed blockchain status.
Secret policy
Never encode an API key, webhook secret, wallet private key, seed phrase or unlock password in a QR code, URL, image, browser storage value or support screenshot.