Something very similar to this was discusses before on here
I was thinking about another implementation last night (by chance) which is perhaps even simpler. It’s not fully fleshed out though so here’s just a very rough outline:
There is a token (we’ll call it PUH coin) which has some inherent value (for example it would enable access/give money off certain of apps which benefit from PUH).
I start with 5 PUH coins.
I then nominate 5 people/accounts which I believe to be human and my token is stored as a vote for this person.
That person in turn gets to place a further 5 votes on accounts which they believe are backed by a human, and so on.
As soon as you have voted on someone you start to receive PUH coins as dividend payments at a rate of 0.1 coins per week.
If the user you voted for has another vote of confidence from another user, your dividend payment rises, to say 0.2%. For 3 votes it would be 0.3% until a maximum of 5 votes from other users, and 0.5% dividend payment from that coin each week.
All arbitrary numbers, probably lots of problems/hole/extreme use cases, and surely something similar done before but still maybe a little bit interesting.