When you think of a good Western, it usually involves someone trying to get a reward for tracking down or killing off a bad guy, aka a bounty hunter.
In the world of cryptocurrency, a bounty refers to a reward that goes to someone who helps spread the word about upcoming initial coin offerings (ICO). Very few high noon quick draws involved.
This "bounty hunter" might talk up the ICO on social media and write blog posts extolling the benefits, and comparing it favorably to the competition. In exchange for her efforts, she receives ICO tokens that can be redeemed for currencies called "fiat money." This type of currency is not backed by gold or any other commodity. Instead, a government has declared it to be legal and the value is determined through supply and demand.
Of course, there are still those who receive a bounty for tracking down people who left town while out on bail and didn't show up for their court date. This bounty would be paid by a local government or a bail bondsman if the fugitive is found and brought back to jail. Might be easier to make a living by earning cryptocurrency bounties.