Worldcoin: A solution in search of its problem
I do not understand how this is supposed to prevent sibyl attacks?How do they prevent fake virtual iris scanning devices from pretending that they scanned a person that doesn’t actually exist?Or is the idea that sama is will run a centralised private identity system that aims to replace government identity management? Then why do you need crypto?Are they trying to replace proof of stake/proof of work with “proof of being a human being”? I don’t see how the iris scanning achieves this?I think it’s fundamentally impossible.If you don’t have a centralised authority verifying identity, the best thing you can get is peer-to-peer federated identity verification like PGP. 
But with this, identity is relative, as in “I trust a guy who trusts a gal who says this person is real”.