Can you help in answering the following questions:-
1. What is the actual algorithm?
2. I'm told a coin is mined every ten minutes, how is this controlled since the number of people mining varies during each day?
3.Why / how does the algorithm become more difficult with time?
4. If new coins are being mined or discovered, I take it not all 21 million currently exist?
5.If 21 million don't exist at present how can we be sure they actually exist and who knows what they are?
6. Why can't it go beyond 21 million, surely there is another solution to the 21 millionth blockchain?
Thanks
Tim