It's the solution to nothing. Nothing.
This is pretty hilarious though, Bitcoin is exactly the same as a variety of other cryptocurrencies, which are carbon copies of it. Identical. But right on cue here come the bitcoin maximalists to explain that theirs is special.
Here's the only reason it's special - brand recognition. That's it. That's what you have over the various forks and clones. First mover advantage.
And this is what tells me that the technology isn't really solving anything, and nobody actually gives a fuck about it - other coins fix problems with BTC, they either make it more anonymous, or resolve transactions faster, or more of them, or all sorts of other things. But BTC still rules the roost because the whole thing is built on hype and sentiment and nothing more.