{
  "pack": "zeus-performance-100y-v3",
  "version": "1.0.0",
  "freezeDate": "2026-05-06",
  "nextReviewYear": 2031,
  "horizonYear": 2076,
  "provenanceRoot": "84bec430b87b1163b9b51d3124c2f4c0a603bb8ceeae1bb61e6e28db76d155f7",
  "owner": {
    "name": "Vladoi Ionut",
    "email": "vladoi_ionut@yahoo.com",
    "btc": "bc1q4f7e66z87mdfj56kz0dj5hvcnpmh0qh4wuv22e"
  },
  "timestamp": "2026-06-10T18:24:03.324Z",
  "title": "Time-To-Meaningful-Content (TTMC) — A Post-LCP Metric",
  "purpose": "LCP measures the largest paint. INP measures interaction. Neither measures when the content becomes *semantically complete* (above-the-fold readable AND interactive AND fully labeled). TTMC closes that gap.",
  "definition": "min(t) such that: above-the-fold text rendered AND no CLS for ≥500ms AND primary CTA interactive AND all images have alt text resolved.",
  "targets": {
    "p75_ms": 1800,
    "p99_ms": 3000
  },
  "measurement": "PerformanceObserver composite of paint + element-timing + INP + layout-shift.",
  "pledge": "TTMC published per route, per device class, per network class."
}