Best Way to Link User Profiles to Individual Payment Pages

Questions
1

My Process:

  1. A user signs up.
  2. A unique QR code is generated for each user.
  3. When a client scans the QR code, they are directed to that user’s payment page.

My Question:
How do I link the payment page to a specific user so that their profile picture, name, and other info are displayed? Additionally, when a client makes a payment, how can I ensure that the transaction includes a reference identifying which user should receive the funds?

2

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