{
 "standard": "impact-claim/v0",
 "spec": "https://diditwork.org/agents/schemas/impact-claim-v0",
 "schema": "https://diditwork.org/schema/impact_claim.schema.json",
 "publisher": {
  "name": "Did it work?",
  "url": "https://diditwork.org/"
 },
 "page": "https://diditwork.org/charities/pure-earth",
 "note": "The modeled impact figures on this charity's page, as impact-claim/v0 claims (grant sizes and fund shares are not impact claims and are left out). Copied from the named evaluator; modeled figures are not guaranteed. Valid means well-formed and honestly labeled, not endorsed or ranked. Units outside the v0 vocabulary carry the custom: prefix and are never converted.",
 "claims": [
  {
   "standard": "impact-claim/v0",
   "claim_id": "eval_hli_pe__0",
   "as_of": "2026-10-01",
   "org": {
    "name": "Pure Earth",
    "website": "https://www.pureearth.org/",
    "identifiers": [
     {
      "scheme": "us_ein",
      "value": "13-4075779"
     },
     {
      "scheme": "bw_org_id",
      "value": "org_pure_earth"
     }
    ]
   },
   "intervention": {
    "name": "Lead exposure reduction",
    "bw_intervention_id": "int_lead_reduction"
   },
   "metric": {
    "label": "WELLBYs per $1,000",
    "unit": "WELLBY_per_1000_USD",
    "value": 105.43,
    "period": "published table"
   },
   "claim_type": "modeled_estimate",
   "source": {
    "kind": "independent_evaluator",
    "evaluator": "Happier Lives Institute",
    "citations": [
     {
      "url": "https://www.happierlivesinstitute.org/pure-earth-summary/",
      "accessed_on": "2026-10-01",
      "title": "Happier Lives Institute: Pure Earth"
     }
    ]
   },
   "honesty": {
    "modeled": true,
    "guaranteed": false
   },
   "uncertainty": {
    "confidence": "medium",
    "notes": "Confidence label stored with the evaluation on Did it work?; the evaluator's own uncertainty discussion is on the cited page."
   },
   "follow_up": {
    "check_after": "2027-10-01",
    "method": "Re-check the cited Happier Lives Institute page for a revised estimate. Follow-up record: https://diditwork.org/ledger/ldg_eval_hli_pe__0"
   },
   "notes": "Copied from Happier Lives Institute's published figure as shown on https://diditwork.org/charities/pure-earth. Modeled, not guaranteed. Valid under impact-claim/v0 means well-formed and honestly labeled, not endorsed or ranked."
  },
  {
   "standard": "impact-claim/v0",
   "claim_id": "eval_hli_pe__1",
   "as_of": "2026-10-01",
   "org": {
    "name": "Pure Earth",
    "website": "https://www.pureearth.org/",
    "identifiers": [
     {
      "scheme": "us_ein",
      "value": "13-4075779"
     },
     {
      "scheme": "bw_org_id",
      "value": "org_pure_earth"
     }
    ]
   },
   "intervention": {
    "name": "Lead exposure reduction",
    "bw_intervention_id": "int_lead_reduction"
   },
   "metric": {
    "label": "Cost per WELLBY",
    "unit": "USD_per_WELLBY",
    "value": 9.49,
    "period": "published table"
   },
   "claim_type": "modeled_estimate",
   "source": {
    "kind": "independent_evaluator",
    "evaluator": "Happier Lives Institute",
    "citations": [
     {
      "url": "https://www.happierlivesinstitute.org/pure-earth-summary/",
      "accessed_on": "2026-10-01",
      "title": "Happier Lives Institute: Pure Earth"
     }
    ]
   },
   "honesty": {
    "modeled": true,
    "guaranteed": false
   },
   "uncertainty": {
    "confidence": "medium",
    "notes": "Confidence label stored with the evaluation on Did it work?; the evaluator's own uncertainty discussion is on the cited page."
   },
   "notes": "Copied from Happier Lives Institute's published figure as shown on https://diditwork.org/charities/pure-earth. Modeled, not guaranteed. Valid under impact-claim/v0 means well-formed and honestly labeled, not endorsed or ranked."
  },
  {
   "standard": "impact-claim/v0",
   "claim_id": "eval_hli_pe__2",
   "as_of": "2026-10-01",
   "org": {
    "name": "Pure Earth",
    "website": "https://www.pureearth.org/",
    "identifiers": [
     {
      "scheme": "us_ein",
      "value": "13-4075779"
     },
     {
      "scheme": "bw_org_id",
      "value": "org_pure_earth"
     }
    ]
   },
   "intervention": {
    "name": "Lead exposure reduction",
    "bw_intervention_id": "int_lead_reduction"
   },
   "metric": {
    "label": "Compared with cash transfers",
    "unit": "x_givedirectly",
    "value": 14.0,
    "period": "published comparison"
   },
   "claim_type": "modeled_estimate",
   "source": {
    "kind": "independent_evaluator",
    "evaluator": "Happier Lives Institute",
    "citations": [
     {
      "url": "https://www.happierlivesinstitute.org/pure-earth-summary/",
      "accessed_on": "2026-10-01",
      "title": "Happier Lives Institute: Pure Earth"
     }
    ]
   },
   "honesty": {
    "modeled": true,
    "guaranteed": false
   },
   "uncertainty": {
    "confidence": "medium",
    "notes": "Confidence label stored with the evaluation on Did it work?; the evaluator's own uncertainty discussion is on the cited page."
   },
   "notes": "Copied from Happier Lives Institute's published figure as shown on https://diditwork.org/charities/pure-earth. Modeled, not guaranteed. Valid under impact-claim/v0 means well-formed and honestly labeled, not endorsed or ranked."
  }
 ]
}