I've been thinking that the best way to implement basic income in a country would be to redistribute certain percentage of it's GDP to citizens. Only thing that needs to be decided is the percentage, otherwise it's just an algorithm that can run on a bank server. Money is collected as tax and automatically paid as basic income.

Benefit is that it's really simple. No need for complicated bureaucracy.

But how to implement that in a blockchain system? Redistribute certain percentage of the market cap to individuals?