You have cleared knowledge About Cryptocurrency mining. Yes. I strongly agree with your opinion that miners are guardian..let me give an argument on this statement. Miners solve the mathematical complex puzzles or algorithm puzzles. They find a valid solution and provide resources of these solution. If there solution meet to specify criteria they they are awarded by reward of newly coin with specific proportion.

Overall you had provided a good insights about significance of mining and no doubt there are so many benefits of mining. And indeed challenges as well. Good luck for the contest. Visit my post as well.