How Does a Proof-of-Personhood Mechanism Counter Sybil Attacks?

Proof-of-personhood (PoP) aims to ensure that each unique human can only cast one vote, regardless of the number of tokens they hold. It uses various methods, including decentralized identity systems or physical verification events, to cryptographically prove uniqueness.

By linking voting power to a verified human identity, it directly undermines the Sybil attack strategy of creating multiple fake identities to gain disproportionate influence.