Vitalik Buterin, the co-founder of Ethereum, shared a working prototype on July 19 that combines zero-knowledge proofs, ETH deposits, and AI-powered content moderation into a single experimental application built on the Aztec Network.
The concept is deceptively simple. Users can post messages anonymously to a shared billboard while a system ensures nobody posts anything that violates community policies. The twist: moderators never learn who posted what, even when flagging problematic content.
How the anonymous billboard actually works
The demo, hosted on Buterin’s GitHub under the repository vbuterin/aztec_experiments, revives an idea he first floated in a 2022 blog post. Back then, he outlined how organizations could build controlled anonymous platforms using cryptographic methods called SNARKs, which stands for Succinct Non-Interactive Arguments of Knowledge.
SNARKs let you prove something is true without revealing the underlying information. Think of it as showing a bouncer your ID proves you’re over 21 without the bouncer actually seeing your birthdate, name, or address.
