Drozd Denis Andreevich

Proof-of-personhood(POP) -allows for a proof of humanity and proof of uniqueness for its participants. Proof-of-personhood does not require any personal data sharing, does not reveal a person’s identity, and does not need a third-party identification center.Proof-of-personhood employs regular checkpoint rituals — synchronous validation sessions — to certify a participants’ humanness for the consequent epoch. The validation requires solving of flips-puzzles easy for a human, difficult for a bot.

The uniqueness of participants is proven by the fact that they must solve flip synchronously. Flips are decrypted at the same time worldwide. A single person is not able to validate herself multiple times because of the limited timeframe for the answers submission.