# HBCE-OIS Compliance Requirements
## Normative Conformance Annex (v0.1)

This document defines the minimum requirements for claiming compliance with HBCE-OIS v0.1.

---

# 1. Conformance Scope

An implementation may claim compliance only if it satisfies:

- Identity structure requirements
- Deterministic verification logic
- Fail-closed execution enforcement
- Append-only audit behavior
- Schema conformity

---

# 2. Mandatory Requirements

A compliant implementation SHALL:

1. Enforce fail-closed execution.
2. Validate IPR structure against the normative JSON schema.
3. Verify cryptographic integrity before execution.
4. Reject malformed or incomplete IPR objects.
5. Maintain append-only identity evolution.
6. Support independent node operation.
7. Avoid public custody of identity-sensitive data.

---

# 3. Execution Gating Requirement

Execution MUST NOT proceed if:

- IPR validation fails
- Integrity hash mismatch occurs
- Status is REVOKED or SUSPENDED
- Ledger continuity is broken

Any bypass invalidates compliance.

---

# 4. Audit Requirements

If audit logging is implemented:

- Logs MUST be append-only.
- Each entry MUST reference a valid IPR.
- Logs MUST preserve chronological integrity.
- Hash continuity SHOULD be maintained.

---

# 5. Interoperability Requirements

Nodes SHALL:

- Accept structurally valid IPR objects.
- Support cross-node hash verification.
- Operate without dependency on a single authority.

---

# 6. Security Requirements

Implementations MUST:

- Use strong cryptographic hashing (minimum SHA-256).
- Protect private key material.
- Prevent unauthorized modification of IPR data.
- Prevent silent execution bypass.

---

# 7. Non-Conformance

The following conditions invalidate compliance:

- Mutable identity records
- Execution without verification
- Centralized mandatory authority control
- Public storage of sensitive identity data
- Non-deterministic verification logic

---

# Status

This annex defines minimum compliance conditions for HBCE-OIS v0.1 implementations.