First time: What's the best thing about Blockchain?

There is a first time for everything. I've been exploring how blockchain and human rights intersect. People look at me like I'm nuts when I say blockchain. But of course they've all heard about bitcoin. I work for a human rights institute so this is interesting stuff. Getting rid of the central authority? OK, sounds good.

But because I'm so new to it all, I wonder if you'd like to share some of your knowledge -- What's the best thing about blockchain? Humor helps but you can be super serious too.

Thanks.