Airdrops are one of the easiest ways to get free bitcoins. It is a way of promoting crypto projects. People complete small tasks and in return, they get small rewards in the form of free coins. 



In this way, awareness is created among the people. People in the greed of earning free coins promote to other friends by inviting them. All they had to do is download a certain app or a wallet, invite any of their friends, share it on social media platforms, and many more tasks. However, vigilance is required for avoiding scams.