[nscalf]

Have you heard of bitcoin's lightning network? There is a layer they're working on that, as I've heard it, allows 1 million transactions a second for a fraction of the transaction cost. It's not VISA, but it's a huge improvement, and makes Bitcoin much more viable. They've been showcasing successful tests, but are open about it not being 100% ready. Still exciting.

[bduerst]

Lightning doesn't scale with users. It can handle 1 million transactions between 2 people in seconds, but 2 transactions between a million people would take weeks.