A bit off-topic, this reminds me of the game The Turing Test on Steam. It's a few years old but basically you solve puzzles that an AI would not likely be able to solve, in a sci-fi environment on a moon where some kind of genetic experiments have been conducted. The final puzzle is an ethical problem that doesn't prove that a person is human but it has depth and complexity to it.
Discussion
Leo, sorry to interrupt. Would you like to get verified by notabot? Then you could verify me? @island has a verification to give.
I will happily verify you as human Sikto.
However, I have a wait-and-see approach to pasting private keys into websites. I will typically wait weeks or months mulling this over until I go ahead with this website.