A few things to remember about Satoshi Nakamoto:
1) The first Bitcoin block included a headline from that day’s UK newspaper, The Times: “Chancellor on brink of second bailout for banks.”
2) Around the end of 2010, Satoshi gradually withdrew from public discussions and handed the project over to other developers.
3) If you want to understand Bitcoin properly, its original white paper is only about nine pages long, so why not read it yourself?
$BTC is the native coin of the system Satoshi designed.