Just pointing it out... you don't need to mine the coins in the country to assist Indians (or anyone) in converting their currency to USD beyond the normal limits. So the price of power to mine the coins doesn't really have much to do with it.
You can however buy computers and power using INR quite easily. The government won't know what you are doing with your computers and power.
What do you mean? To whom are you showing a paper trail? Do you have to account for cash withdrawals from a bank?
Do you have to show a paper trail if you take out some money from the bank, and use it to buy a motorcycle, or twenty barrels of grain, or ten iPhones?