The privacy research lab of the Ethereum ecosystem has recently made a significant move - their zkID team has just launched something called OpenAC. This thing is an open and transparent lightweight anonymous credential solution, with proof display taking only 0.129 seconds, which is quite fast.

In simple terms, this is a new approach to zero-knowledge identity construction. Special consideration was given to compatibility with existing identity systems during the design, and it specifically aligns with the European digital identity architecture standards (EUDI ARF). It seems to aim at finding a balance between privacy protection and identity verification, ensuring user privacy is protected without being incompatible with traditional systems.