Wow, that's some good amount of cashback on credit card purchases. It actually seems too good to be true. Could you please explain how will you be monetized if you allow a 20% cashback in terms of rewards in bitcoin.

Also, if you wan't a good feedback/opinions/suggestions for BitPe credit card then you should consider making a survey form on google and get responses over there.

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I have a few questions for you, may be you can use them for the FAQ and survey.

1. What's the minimum purchase amount to get rewards in crypto ?
2. Will you be rewarding in Satoshis based on the current market price at that moment ?
3. How much time will it take for the rewards (cryptocurrencies) to be deposited ?
4. What's the minimum withdrawal amount in crypto to get the crypto in our private wallet ?
5. Where is your company located ?
6. How many other banks have you partnered with ?
7. Do you have a website ? If yes, please share and include it in your ANN ?
8. When will the product be ready for delivery ?
9. Do we have to pay anything to get the creditcard ?
10. Does the BitPe credit card has any monthly or annual charges ?

I am trying to learn how the bitcoin core source code functions so that I can test out few ideas I have in my head.
But for that I need to know which functions are used in every module.
The source code is so vast that I am confused now. Can anyone tell me how do I find the right module to start learning the code ?

For example if I want to learn how the code works for signing a message where should I begin with ?
I know one module will lead to another but where should I start from for that particular task (i.e. signing a message)?