The first bounty campaign for which I received $ 500 was Blackmoon Crypto, I remember I was very surprised when I learned that in just 2 weeks I earned my monthly salary of an engineer.
I still remember that time I participated in the dent project signature campaign. the reward that I received was not so great because I was still a junior rank. the second project is bitdice. I think it was my first two projects that gave me money. and since then I have assumed that the bounty really produced because the two projects I worked on were really successful. unlike now it's very difficult to find a project that can actually pay.