Since QR codes are merely "containers" for links, the content of a d.cscan.co QR code depends entirely on where the creator wants to send you.
If you have trouble with a d.cscan.co link or want to know more, here are answers to common questions. d.cscan.co qr code
The domain d.cscan.co itself is and owned by a major financial institution [2]. Seeing it on a receipt from a business you visited is standard behavior. Since QR codes are merely "containers" for links,
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