[jtbayly]

How can I verify whether this is actually working as advertised? For all I know this is just a blog running on a central server with terrible URLs.

And what happens if I create a piece of content, close the window, and then share the URL with somebody? Will they not be able to see it?

[vitriolum]

You can download the code from here: https://gitlab.com/vitriolum/vitriol-web and serve it from whenever you want, even localhost.