Every transaction on the blockchain requires paying a gas fee. Currently, there is no way it can't be avoided, though it can be compensated. Our application gives the discount coupons against the gas fees paid.
We had required knowledge of independent technologies but did not know how to integrate them into an end-to-end application. Then I stumbled upon Polygon Technologies' blockchain basics documentation (https://docs.polygon.technology/docs/home/blockchain-basics/blockchain). Then we understood the end-to-end flow.
But we are still struggling to find out time to work on it to finish it.
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