{
  "stage": 378,
  "source_stage": 377,
  "input_type": "qkd_safety_metadata",
  "evidence_classification": "metadata_only",
  "qkd_system": {
    "system_identifier": null,
    "vendor_or_operator": null,
    "protocol_family": null,
    "deployment_environment": null,
    "device_model": null,
    "firmware_or_software_version": null
  },
  "execution_context": {
    "execution_id": null,
    "executed_at": null,
    "location_classification": null,
    "operator_identifier": null
  },
  "qber": {
    "observed_qber": null,
    "declared_qber_limit": null,
    "qber_within_declared_limit": null,
    "limit_source": null
  },
  "key_safety": {
    "raw_key_included": false,
    "sifted_key_included": false,
    "reconciled_key_included": false,
    "final_secret_key_included": false,
    "key_material_publicly_recoverable": false,
    "key_length_disclosed": false,
    "key_identifier": null
  },
  "evidence": {
    "measurement_summary_present": false,
    "device_attestation_present": false,
    "operator_attestation_present": false,
    "testbed_description_present": false,
    "simulator_description_present": false,
    "calibration_record_present": false,
    "external_verification_present": false,
    "evidence_files": []
  },
  "publication_boundary": {
    "metadata_only": true,
    "raw_qkd_key_publication_prohibited": true,
    "derived_secret_publication_prohibited": true,
    "private_device_credentials_prohibited": true,
    "personal_data_prohibited": true
  },
  "note": "Default safe metadata-only input. No physical QKD, testbed, or simulator evidence has been asserted."
}