Well, at least in my country, cryptocurrencies are still a loophole when it comes to tax, regulations aren't thought out and cryptocurrencies aren't taxable. Honestly, the amount most of the bounty hunters earn aren't enough to tax, I mean, when it's taxed it would be so low that every user here would be forced to use multis for bounty hunting, otherwise, you can't make a living from it.
So taking bounty hunting as a freelance off-record work. Let's be honest here, some of us have switched to full-time bounty hunting from our day jobs, to be a freelance taxpayer, you need a tax registration certificate, how many of us have it here?
As for me working abroad, I take bounty now as part of my daily routines or hobbies... As another source of income since my salary is not enough to support my family needs in my country!I have a little time to do bounties because of my works that's why I just take it as hobby, enjoy it and just have fun... Taking out the boredom I felt sometimes.. But when I finished my contract and go home I will take bounty as my home based jobs... Since I know also how to trade I can do both to have another source of income while at home..