the World's Natural resources (including the Land) should belong to everyone, by natural right.
if a DAO could be setup to manage the World's Natural resources, and every person on the planet by right was given a share/stake, then that would already go some way in guaranteeing a Basic Income.
In Alaska all citizens are paid some dividends from their region's Oil Revenues, not sure how much they get but I bet more than some people earn in 3rd world countries.
Extending the right also to the Tools of Production (the machinery, the robots etc) it sounds a bit like Communism ("the means of production belong to the proletariat"), although you envision a system where people through the free market can own more shares than others.
thanks for another great read, hopefully I'll find some time in the coming weeks to start blogging here myself.