{
 "metric": "cert-validity-window",
 "segment": "ca-amazon",
 "anchor": "cert",
 "label": "Amazon (certificates)",
 "population": "certificates issued by Amazon",
 "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": 1035,
  "qf_pct": 7.34,
  "ci": [
   5.91,
   9.09
  ],
  "dist": {
   "longer_than_47d": 7.34,
   "within_47d": 92.66
  },
  "snapshot": "ct-recent-12000"
 },
 "series": [
  {
   "day": "2026-08-01",
   "n": 317,
   "qf_pct": 8.83,
   "ci": [
    6.18,
    12.47
   ],
   "dist": {
    "longer_than_47d": 8.83,
    "within_47d": 91.17
   },
   "snapshot": "ct-recent-4000"
  },
  {
   "day": "2026-08-02",
   "n": 320,
   "qf_pct": 8.75,
   "ci": [
    6.12,
    12.36
   ],
   "dist": {
    "within_47d": 91.25,
    "longer_than_47d": 8.75
   },
   "snapshot": "ct-recent-4000"
  },
  {
   "day": "2026-08-04",
   "n": 971,
   "qf_pct": 8.44,
   "ci": [
    6.86,
    10.36
   ],
   "dist": {
    "longer_than_47d": 8.44,
    "within_47d": 91.56
   },
   "snapshot": "ct-recent-12000"
  },
  {
   "day": "2026-08-05",
   "n": 452,
   "qf_pct": 8.19,
   "ci": [
    6,
    11.08
   ],
   "dist": {
    "within_47d": 91.81,
    "longer_than_47d": 8.19
   },
   "snapshot": "ct-recent-12000"
  },
  {
   "day": "2026-08-09",
   "n": 1035,
   "qf_pct": 7.34,
   "ci": [
    5.91,
    9.09
   ],
   "dist": {
    "longer_than_47d": 7.34,
    "within_47d": 92.66
   },
   "snapshot": "ct-recent-12000"
  }
 ],
 "license": "CC BY 4.0",
 "source": "https://quietfailures.com/datasets/cert-validity-window/ca-amazon"
}