{
 "metric": "cert-validity-window",
 "segment": "ca-google-trust-services",
 "anchor": "cert",
 "label": "Google Trust Services (certificates)",
 "population": "certificates issued by Google Trust Services",
 "states": [
  "within_47d",
  "longer_than_47d"
 ],
 "quiet_failure_states": [
  "longer_than_47d"
 ],
 "measurement": "Stream a Certificate Transparency log, parse each leaf, compute `not_after − not_before`. Population unit: **certificate**; segmented by **CA**.",
 "why_it_matters": "The same deadline seen from the supply side. It shows which CAs have already moved their customers to automated short-lived issuance and which are still writing certificates that will be non-compliant — a per-CA readiness table nobody else publishes.",
 "limits": "Measured over a sample of recent issuance, so it reflects current practice rather than the installed base. The 47-day threshold was chosen after a 100-day cut returned 0% everywhere — issuance had already moved below it, leaving no variance to observe.",
 "data_tier": "ct_ecosystem",
 "population_predicate": "any",
 "entity_type": "cert",
 "kind": "failure",
 "latest": {
  "day": "2026-08-09",
  "n": 3238,
  "qf_pct": 99.41,
  "ci": [
   99.09,
   99.62
  ],
  "dist": {
   "longer_than_47d": 99.41,
   "within_47d": 0.59
  },
  "snapshot": "ct-recent-12000"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 374,
   "qf_pct": 99.2,
   "ci": [
    97.67,
    99.73
   ],
   "dist": {
    "longer_than_47d": 99.2,
    "within_47d": 0.8
   },
   "snapshot": "ct-recent-4000"
  },
  {
   "day": "2026-08-02",
   "n": 382,
   "qf_pct": 98.95,
   "ci": [
    97.34,
    99.59
   ],
   "dist": {
    "within_47d": 1.05,
    "longer_than_47d": 98.95
   },
   "snapshot": "ct-recent-4000"
  },
  {
   "day": "2026-08-04",
   "n": 2242,
   "qf_pct": 99.24,
   "ci": [
    98.79,
    99.53
   ],
   "dist": {
    "longer_than_47d": 99.24,
    "within_47d": 0.76
   },
   "snapshot": "ct-recent-12000"
  },
  {
   "day": "2026-08-05",
   "n": 1576,
   "qf_pct": 99.05,
   "ci": [
    98.44,
    99.42
   ],
   "dist": {
    "within_47d": 0.95,
    "longer_than_47d": 99.05
   },
   "snapshot": "ct-recent-12000"
  },
  {
   "day": "2026-08-09",
   "n": 3238,
   "qf_pct": 99.41,
   "ci": [
    99.09,
    99.62
   ],
   "dist": {
    "longer_than_47d": 99.41,
    "within_47d": 0.59
   },
   "snapshot": "ct-recent-12000"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-validity-window/ca-google-trust-services"
}