What is the Sybil attack and who created it?
The Sybil attack is a phenomenon where fake identities overwhelm online networks, first defined by John R. Douceur in 2002.
Questions about Proof of personhood
Short answers, pulled from the story.
When did Vitalik Buterin propose proof of personhood to counter Sybil attacks?
Ethereum co-founder Vitalik Buterin wrote about this problem in 2014 while discussing cryptocurrency governance structures.
How does the encointer project verify physical presence without revealing real names?
The encointer project organizes small groups to meet at randomly chosen locations simultaneously so participants can verify each other's physical presence by checking IDs within specific time windows.
Why do facial recognition systems fail globally according to the script text?
Facial recognition systems fail globally because faces contain insufficient unique features when applied across diverse populations.
How does Humanode protect biometric data during transmission?
Humanode uses zero-knowledge proofs combined with homomorphic encryption to ensure original biometric information never leaves the user's device during transmission.