In a pure democracy, 51% can vote to kill the other 49%, and it's "legal".
In some forms of pure democracies yes, but not this one. A lot of people here seem to be very confused as to what liberty means. I'll give a much more robust outline of liberty in the updated constitution.
But a lot of the problem with having a system like this is basically the same problem the Soviets had with implementing Communism.
You're delusional, and I'll show you why...
It's hard to make it work on a large scale simply because there's a massive catch-22. You need to have somebody making sure that somebody doesn't get greedy and hog all the doughnuts. But what do you do if the people in charge of distributing doughnuts suddenly decide they're hungry and start eating them all. It's kind of hard to do anything about it once you start noticing empty boxes of doughnuts except maybe take the remaining doughnuts away from them and put somebody else in charge of distributing them. And you're also going to need somebody who is in charge of the machine that counts the votes but that machine can be hacked and its programming changed to, say, counting a "yes" vote on a certain issue twice and a "no" vote only once.
It's not any harder to make it work on large-scale than it is on small-scale, because both scales are automated the same way. Voting can't be hacked on a distributed cryptographic network, just like you can't double-spend bitcoins. When a transaction goes through, it's gone through, everyone agrees on it, end of story. The information of that transaction can be anything, so votes can't be double spent either.
Voting on a crypto network is not a novelty, the bitcoin network can be used for voting, as can many other cryptocoin networks; voting isn't enough, your platform is not suitable for running an entire government system off of. We aren't just talking about voting, we're talking about the entire government, ran and automated on this distributed cryptographic network. Your platform would have to be many factors more robust in order for this to work.