🏛️Architecture

To address the limitations of the client-based proof system architecture, we introduce zkPass, a service-based proof system operating as a Proof-as-a-Service platform.

The defining characteristic of zkPass is the offloading of ZKP computations to a server operating within a Trusted Execution Environment (TEE). Users only need to initiate a service request through the zkpass-client SDK library, which then delegates the heavy computational tasks to the server side.

The zkPass is specifically designed to support privacy-preserving applications. It provides the client libraries and secure middle-layer infrastructure to implement applications that protect the privacy of user data and support a verifiable computation environment. zkPass uses ZKVM (Zero Knowledge Virtual Machine) as the underlying core proof system on which the applications run. In the future, zkPass may also support a new proof system other than Zero Knowledge Proof.

The high-level architecture view of the zkPass is illustrated here:

Currently, zkPass implements one such zkPass module, the Data Verification Request (DVR). Future releases of zkPass can support other forms of privacy-protecting applications. This guide will focus primarily on two things: the service infrastructure of zkPass and the DVR application.

The next section describes each component of the zkPass.