{
  "total": 1,
  "source": "d1",
  "tracking_since": "2026-10-25T12:38:37.716Z",
  "source_rechecks": {
    "rows": 332,
    "series": 250,
    "last_checked_at": "2026-10-25T13:38:37.000Z",
    "latest_result_counts": {
      "confirmed": 240,
      "unreachable": 5,
      "needs_review": 4,
      "changed": 1
    },
    "method": "Each source URL is fetched and the recorded numbers are looked for in the page (PDFs via pdftotext); anything not confirmed is reviewed by a human. Log: /downloads/price_rechecks.jsonl"
  },
  "observations": [
    {
      "id": "po_20261025_0a6996d9aa7b",
      "series_key": "ps_d899874701a59893",
      "kind": "benchmark",
      "use_case_id": "humanitarian-demining",
      "use_case_ids": [
        "humanitarian-demining"
      ],
      "provider_id": null,
      "description": "Cost per m2 of land cleared, multi-country study (min-max, average $4.00)",
      "low": 0.4,
      "high": 19.1,
      "currency": "USD",
      "unit": "per square metre",
      "region": "Global",
      "source_url": "https://www.gichd.org/fileadmin/uploads/gichd/Publications/Operational_Efficiency_in_Mine_Action.pdf",
      "as_of": "2026-10",
      "observed_at": "2026-10-25T12:38:37.716Z",
      "content_hash": "sha256:0a6996d9aa7b05bc6a434d26386c5a22ec46937381e1b872a8652018e52c12bb",
      "supersedes": null,
      "origin": "backfill",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 0.4,
        "high": 19.1,
        "note": "Already in target currency; no conversion."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_d899874701a59893",
      "kind": "benchmark",
      "use_case_id": "humanitarian-demining",
      "provider_id": null,
      "description": "Cost per m2 of land cleared, multi-country study (min-max, average $4.00)",
      "currency": "USD",
      "unit": "per square metre",
      "region": "Global",
      "source_url": "https://www.gichd.org/fileadmin/uploads/gichd/Publications/Operational_Efficiency_in_Mine_Action.pdf",
      "observations": 1,
      "first_observed_at": "2026-10-25T12:38:37.716Z",
      "last_observed_at": "2026-10-25T12:38:37.716Z",
      "current": true,
      "latest": {
        "low": 0.4,
        "high": 19.1,
        "as_of": "2026-10",
        "id": "po_20261025_0a6996d9aa7b"
      },
      "trend": null,
      "last_rechecked": {
        "checked_at": "2026-10-25T13:28:55.540Z",
        "result": "confirmed",
        "by": "automatic"
      }
    }
  ],
  "note": "Only one observation per series so far: we started recording every price on 2026-10-25 and re-check every source on a schedule. A trend appears when a re-checked source shows a different price (we never overwrite old observations).",
  "pagination": {
    "total": 1,
    "limit": 200,
    "offset": 0,
    "returned": 1,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}