i think if i was going to wager i would wager on crypto note at this point, still studying it's code,
i don't trust anything not open souce either......
i think dark is a lot more hype than reality......
one thing for sure multiple hash algorithms together are weaker than a single proof of work algorithm, that is a factor to consider as well , but maybe for the future..... still it's been proven mathematically
could you give me any link on papers or articles with "math proof"? I'm not a pro in cryptography to understand it by myself.