The Identity System is the heart of LIVRE OS.

It defines what an identity is, how it is represented cryptographically, and how it can safely change over time without ever exposing raw personal data.

At a high level, the Identity System combines:

• the Identity Layer (model & commitments)
• the Livre Vault (encrypted storage & proof generation)
• the Proof Engine (zero-knowledge proofs)
• a consistent policy & attribute model that apps can rely on.

Use the pages below to navigate the spec:

1. Identity Layer (Specifications) – core model, commitments, lifecycle

   Identity Layer Specifications

2. Claims & Attributes – how facts about a user are structured and proven

   Claims & Attributes

3. Proof Engine – what we can prove and how it plugs into the OS

   Proof Engine

4. Sovereign Vault – encrypted environment where data and proofs live

   Livre Vault

5. Diagrams – flows and architecture views

   Diagrams

This entire block should let a developer or cryptographer answer:

“What is an identity in LIVRE OS, and what guarantees does it give?”

Key Model & Lifecycle