Identity Brain.

Hardware-bound identity, key custody, and per-tenant attestation.

The Identity Brain holds the user's hardware-bound identity. It mediates access to the secure enclave, rotates session keys, and produces per-tenant attestations under the Adaptive Multi-Tenant OS (patent 04). When the user switches tenants (clinical to enterprise to other), the Identity Brain enforces the cryptographic isolation that makes tenant leakage architecturally impossible.

• 01Hardware-bound key custody
• 02Per-tenant attestation
• 03Session key rotation and replay-resistance
• 04Cloning refusal: foreign hardware produces an unauthorised identity