Transaction completion confirmation from Metamask mobile after QR-code based scan & pay

[snwlprd.eth]

Hello @arunanksharan !
Welcome to MetaMask community !

I see the solution to the problem in the following sequence:

1. The QR code opens a web application with a payment page / a local coffeeshop application that is connected to a web3 provider

2. On the client side, using promises to get the hash of the transaction after successful completion / generate an error if not.

An example is given here:

Email receipt payment

Hello, yes. For example, you can use the Promise and send the hash to the user by email after the transaction is completed ( resolve the Promise ). import { toast } from "react-toastify"; const customToast = (promise) => { toast.promise(promise, { pending: { render() { return <div>Waiting to...</div>; }, }, success: { render({ data }) { return ( <div> // data.transactionHash </div> ); } }, error: { render({ dat…

3. Sending data over a secure connection to the server.

4. Interaction with the database / notification of the POS terminal application.