Runtime Orchestration

DSUM 4.0 · Module 09 · T5-RIGID Governance

System Integrity & Runtime Verification

Integrity (Immutability + Hash Seals)

Authority: AC-1 (S. Jason Prohaska)

Classification: T5-RIGID | ENTERPRISE-FINAL

Mode: FAIL-CLOSED Â· EVIDENCE REQUIRED

Version: 3.0

Canonical Timestamp: 2026-02-05T18:10:00+01:00

Purpose

This module defines the integrity requirements for critical ETHRAEON surfaces. Integrity is maintained through file immutability controls and cryptographic hash seals that detect unauthorized modifications.

Core Principle

Critical surfaces must be immutable.

All production surfaces designated as immutable must be protected with file system immutability flags and verified through cryptographic hash comparison.

Immutability Implementation

3.1 File System Immutability

Aspect

Specification

Method	Linux extended attributes (chattr +i)
Scope	All files in immutable surface root
Verification	lsattr command
Override	Requires explicit unlock procedure

3.2 Immutable File Operations

    Source: ETHRAEON ΔSUM 4.0 — Full Compilation (2026-02-22)

    Classification: T5-RIGID | ENTERPRISE-FINAL

    Authority: AC-1 (S. Jason Prohaska)

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