How can you justify to yourself to take money from the people at gunpoint to research bitcoin for hundreds of hours? How about researching wasteful spending by tenured professors?
And methinks that if I could prevent a few folks here losing their life savings to scammers, Brazilian or otherwise, that may already justify my salary. Which may be more than I deserve, but is not exactly taken at gunpoint from them,
With Brazil's cpi at over 6% and food prices over 20% annual inflation because your government can't rob enough people fast enough, they have to print money to cover your salary. Maybe you should study how you can prevent ALL of your country's population to lose 6% of their wealth each year instead of a few people getting scammed.