Dude bitcoin is the main cryptocurrency. It is not an alternative coin. When we say alternative it is just like a replacement for the main. You can see alternative coins in market there js a website but i forgot the url. Well bitcoin is not an alt.
Yeah right, like metal then bitcoin is golden, and it must be admitted that bitcoin is to become a reference on the price of the other coin, take a look at trading then all refer to the price of the bitcoin.