The Proof Engine connects:

• Identity State → via identity_commitment
• Attributes → via attributes_root + leaf openings from Vault
• Policies → via Policy Engine (what is allowed)
• Verifiers → via Verifier API / SDK

It answers questions like:

• “Is this user over 18?”
• “Is this identity resident in PT?”
• “Does this user hold license X from issuer Y?”
• “Is subscription tier ≥ GOLD?”

Without ever revealing:

• name
• exact age
• address
• document numbers
• internal identifiers