{
  "registry_version": "1.0",
  "provenance_schema_version": "1.0",
  "application_version": "0.4.0",
  "name": "assertion-evidence-classes",
  "description": "Evidence availability and authority requirements.",
  "entries": [
    {
      "code": "mandatory_live",
      "exact_effect": "required",
      "meaning": "Current accessible evidence is required for exact evaluation."
    },
    {
      "code": "mandatory_retained",
      "exact_effect": "required",
      "meaning": "Retained authoritative evidence and its digest are required for exact evaluation."
    },
    {
      "code": "advisory",
      "exact_effect": "may_degrade",
      "meaning": "Absence may degrade a named dimension but does not alter authoritative evidence."
    },
    {
      "code": "shadow",
      "exact_effect": "no_authority",
      "meaning": "Comparison-only evidence that never becomes authoritative by observation."
    }
  ]
}