It's not like this stuff is hard to reverse but those skills are a bit more scarce and it requires more effort. My opinion is that you'll get relatively more b

It's not like this stuff is hard to reverse but those skills are a bit more scarce and it requires more effort. My opinion is that you'll get relatively more blackhat "eyes" on your code and fewer whitehat "eyes" if you go closed source. Personally, I don't know anyone who would reverse a closed-source wallet to report bugs "out of the goodness of their hearts", but I do know a bunch of people who would report bugs in good faith to open-source projects.