The Protocol

The in-depth technical details of the protocol are coming soon. Including the white paper!

At the core of the World ID Protocol is the use of Semaphore. Semaphore is a zk-SNARK based privacy protocol that allows for the creation of anonymous credential systems developed by the Ethereum Foundation. The World ID Protocol uses Semaphore to create distinct anonymity sets for proof of personhood.

Currently, personhood credentials are handled as separate Sempahore instances. That means that each credential has its own anonymity set, and is only a list of verified credential holders. No other information is attached on-chain related to the credential (e.g. no biometric information is attached for the biometric credential, or no information about a phone number is attached to a phone credential).