Annex E — Conformity Artifact Structure

This annex defines required structural elements and integrity binding requirements for all Trust-State conformity artifacts.

1. Required Fields

A conformity artifact SHALL include the following fields:

• decision
• evidence_hash
• rule_hash
• outcome_hash
• timestamp

2. Canonical Structure

The artifact SHALL be serialized in canonical form as defined in Annex A.

All fields SHALL be present. Field omission SHALL constitute non-conformance.

3. Outcome Hash Derivation

Outcome hash SHALL be computed as:

OUTCOME_HASH = SHA256(decision || "|" || state)

The delimiter SHALL be the ASCII pipe character (0x7C).

4. Artifact Hash Binding

The complete canonical artifact structure SHALL form the input to artifact hash derivation.

ARTIFACT_HASH = SHA256(canonical_artifact_byte_sequence)

5. Integrity Requirement

Any modification to artifact fields SHALL produce a distinct artifact hash.

Artifact integrity SHALL be independently recomputable and verifiable.

6. Immutability Requirement

Issued conformity artifacts SHALL NOT be retroactively altered. Any state transition SHALL result in issuance of a new artifact.