{
 "contest_version": "contest.v1",
 "category": "emailfind",
 "promise": "Find the verified professional email address of a person from name and employer domain.",
 "task": "For each frozen contact (first name, last name, employer domain), return the professional email; success = exact match with the employer-published address AND tool-claimed verified status.",
 "context": "B2B email finding via official APIs, name+domain input only, no LinkedIn, no phone reveal; common verifier = published-truth-exact-match.",
 "dataset": {
  "description": "Contacts whose nominative professional email is published by their employer (team/impressum pages), CH/DE/FR majority, professional-services SMEs over-represented; pseudonymised; see dataset MANIFEST.",
  "size": 111,
  "frozen_at": "2026-09-02T17:34:45Z",
  "sha256": "a5257ab077d160c1a174afeaed904df5e79c59c4f8bb385ac45a4c0ffc6f545b",
  "contains_personal_data": true
 },
 "metrics": {
  "primary": "found_verified_rate",
  "secondary": [
   "found_any_rate",
   "false_positive_rate",
   "cost_per_verified_usd",
   "latency_p50_ms",
   "latency_p95_ms",
   "error_rate"
  ]
 },
 "participants": [
  {
   "name": "dropcontact",
   "vendor": "Dropcontact",
   "access": {
    "api": true,
    "cli": false,
    "mcp": false,
    "auth": "api_key"
   }
  },
  {
   "name": "lusha",
   "vendor": "Lusha",
   "access": {
    "api": true,
    "cli": false,
    "mcp": false,
    "auth": "api_key"
   }
  }
 ],
 "budget": {
  "cap_usd": 150,
  "per_participant_cap_usd": 30
 },
 "window": {
  "start": "2026-09-02T17:36:06Z",
  "end": "2026-09-04T23:59:59Z"
 },
 "scoring": {
  "min_n": 360,
  "max_interval_width": 0.2,
  "confidence": 0.95,
  "min_blocks_for_rank": 2
 },
 "freshness": {
  "validity_days": 90
 },
 "assignment": {
  "method": "cluster-stratified-by-country-and-size",
  "seed": 20260902
 },
 "conflicts": [
  "dropcontact: devlo is a customer of Dropcontact and this run was paid from devlo's existing prepaid credits; devlo is a user of the tool, not a vendor; same conditions and credits for every arm, journaled (CONFLICT_REGISTER.json: USER_OF_TOOLS)",
  "lusha: devlo is a customer of Lusha and this run was paid from devlo's existing prepaid credits; devlo is a user of the tool, not a vendor; same conditions and credits for every arm, journaled (CONFLICT_REGISTER.json: USER_OF_TOOLS)"
 ],
 "limits": [
  "Population limited to employer-published emails: absolute rates are optimistic bounds; tool-to-tool comparison remains valid (same frozen set for all).",
  "Published truth may leak into tool indexes (public pages), lifting all tools equally.",
  "Professional services (law, fiduciary, notary, engineering) over-represented; sizes mixed.",
  "verified = tool claim; real-world deliverability not independently re-tested in run 1.",
  "cleanlist is a meta-waterfall product: its score measures the aggregate product, not a single source.",
  "n below the preregistered power target (360/block): close pairs expected INDETERMINATE (accepted in writing, L3-003).",
  "Costs are credit estimates at public per-credit prices (prices.json); subscriptions prorated there.",
  "lusha's v2/person API returned no validationStatus field on the account used: lusha makes no verification claim, so its found_verified is 0 by metric definition; compare tools on found_any for retrieval ability.",
  "Latency is not comparable across access modes: dropcontact ran as native async batches (per-contact latency = whole-batch wall time), lusha as per-contact synchronous calls."
 ],
 "runner": "devlo (agent-operated)",
 "funding": "devlo own funds; no vendor money"
}