Newbie here - what does it mean by to shot a coin?
Any trade that benefits from bitcoin price decline. OP is asking the same thing.
You borrow bitcoins from your rich friends and sell them on the market. When bitcoins crash, you buy back and return them to your desperate friends.
CME futures, Bitmex
CBOE futures too
Open a trading account on Bitmex. You can short bitcoin with up to 100x leverage! They also offer leveraged trading of other popular alts. Bitmex: bitmex.com/register/gZdxa6
While Bitcoin is growing take the ladder out and it becomes short this is called shorting !!
Getting into futures contract is dangerous if you don't know what you are doing
Sell Bitcoin futures