ETHPrague 2026

ETHPrague 2026

Viki Val

Viki Vais a founder, blockchain engineer, and researcher working at the intersection of crypto, identity, and internet infrastructure. They have co-founded multiple crypto-related projects and focus on building practical systems around decentralized technologies. Their current interests include proof-of-personhood systems, privacy-preserving protocols, and the growing role of AI agents on the web


Session

05-10
14:40
25min
Privacy-Preserving Proof of Personhood at the HTTP Layer
Viki Val

As AI agents take over more web traffic, CAPTCHAs and account-based gates are starting to fail. This talk introduces X511, an HTTP-layer proof-of-personhood protocol that uses zero-knowledge proofs from identity documents to verify that a visitor is human without exposing personal data, and shows how the model can be implemented as ordinary web middleware.

Privacy & Identity
Grégr Stage