Specifically, a web of trust designed for exactly that assertion: This person is a real human. Signatures here serve to assert what identity something came from

Specifically, a web of trust designed for exactly that assertion: This person is a real human. Signatures here serve to assert what identity something came from. There would be some of the usual web of trust problems, e.g., trying to explain to Joe Q. Public that you only sign for people you know, beyond doubt, are human. Preferably in person. Many other problems, too. I guess you could say, my thought here isn't that this would solve the problems. The problems at this point are somewhat well known. What has been missing is any benefit significant enough to motivate us to get past those problems. If there is, it's obviously many years away. Wouldn't exactly suggest building a startup around this idea right now, if you get my drift. We still need to go through a phase of the problem getting larger before we even get to the phase where people start to realize this is a problem and start demanding that people online prove they are actually people, and goodness knows "I'm a human" is merely the lowest of low bars itself, not the solution to all trust problems.