This looks like something from Tron, trippy. The height of the block is the amount of BTC, there are some huge (thousands of BTC) transactions happening.
On a semi related note, I built a 3D visualization (globe) to see where these blocks are geographically mined. https://coinminingstats.com/globe
Its a vue.js site that I host statically on Netlify, with django backend on heroku that pulls all the data. The trick to get things to load quickly is caching the data on https://www.keycdn.com/ (with the right headers you can set it up that the CDN queries the slow pages in the background and serves the cached ones meanwhile to keep things near real-time). I might do a writeup about that it took me a while to figure out.
I'm using https://threejs.org/ for the webgl stuff, the tricky part was figuring out how to map the coordinates to change the country highlighting. Ended up having to write a custom shader which was quite the learning curve :)
