Hello everyone, i'm new here please give me some guidance... 
Some question :-
1. Do bitcoin will be exhausted?
2. Who's really satoshi nakomoto?
3. Mining will be profitable for future?
WelcomeSome question :-
1. Do bitcoin will be exhausted?
2. Who's really satoshi nakomoto?
3. Mining will be profitable for future?
ad 1. you mean how much coins there will be? 21 000 000 in circulation, no more, ever
ad 2. noone knows
ad 3. after all coins will be mined and no more blocks reward coins for miners, they will stilll mine for fees, that is concept, if it will be enough compensation for their efforst? we will see