The Identity Layer describes how a LIVRE OS identity is **modeled (represented), committed (stored), updated, and verified (**proven) in LIVRE OS.

It is deliberately independent of UI, specific blockchains, or storage providers.

Everything is expressed in terms of:

• cryptographic commitments
• Merkle roots
• keys
• policies
• vault state

It covers:

1. Identity Model Overview

   Core objects, identifiers, and relationships.

   Identity Model Overview

2. Identity Commitment & Keys

   How keys, attributes, and policies are bound into a stable commitment.

   Identity Commitment Structure

3. Descriptors & Attributes

   What facts an identity can have and how they are modeled (schema + Merkle tree).

   Descriptors & Attributes

4. Identity Policies

   Rules that govern who can see, request, or prove what.

   Identity Policies

5. Identity Flows

   Standard flows every implementation must support (create, update, rotate, recover).

   Identity Flows

6. Proof Integration (Client)

   How apps talk to the Identity Layer and request proofs

   Proof Integration (Identity ↔ Proof Engine)

Each page can be implemented by any backend as long as it respects the guarantees and data structures defined here.

All of this together defines the Solivre Identity Kernel.