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Not the same but, if I remember correctly, Ripple was trying to do something similar i.e. use URIs for money transfer.

• smoldesu 5y ago
  Technically most cryptocurrencies support QR code payments. Unless I'm missing something here(?)
  • _448 5y ago
    It is not QR code. It is something called PayString: https://paystring.org https://paystring.org