{
  "total": 4,
  "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_d69d8130c9e8",
      "series_key": "ps_4d159d7b6e16ab55",
      "kind": "benchmark",
      "use_case_id": "dock-pier-inspection",
      "use_case_ids": [
        "dock-pier-inspection"
      ],
      "provider_id": null,
      "description": "Buy your own inspection ROV: Blue Robotics BlueROV2, starting price (sonar and accessories extra)",
      "low": 4900,
      "high": null,
      "currency": "USD",
      "unit": "per unit",
      "region": "US",
      "source_url": "https://bluerobotics.com/store/rov/bluerov2/",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-25T16:36:25.503Z",
      "content_hash": "sha256:d69d8130c9e8dd8e45a4e8245aebf9b9db53d837ea546f1f0d41350c37b406df",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 4900,
        "high": null,
        "note": "Already in target currency; no conversion."
      }
    },
    {
      "id": "po_20261025_f4f24c94e71b",
      "series_key": "ps_09a327f167184264",
      "kind": "provider_published",
      "use_case_id": null,
      "use_case_ids": [
        "dock-pier-inspection",
        "hull-inspection-rov"
      ],
      "provider_id": "harlem-subsea",
      "description": "ROV underwater inspection (quay, boat or structure) with written report, starting price",
      "low": 2500,
      "high": null,
      "currency": "NOK",
      "unit": "per inspection",
      "region": "NO-31",
      "source_url": "https://harlemsubsea.no/",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-25T18:35:04.403Z",
      "content_hash": "sha256:f4f24c94e71bb700948bc1c7f35cd6ef0a9ff14b035d4a63837497effff0b3e4",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 267,
        "high": null,
        "fx": {
          "pair": "NOK/USD",
          "rate": 0.106942,
          "nok_per_usd": 9.3509,
          "rate_date": "2026-10-23",
          "source": "European Central Bank reference rates via Frankfurter",
          "source_url": "https://api.frankfurter.dev/v1/latest?base=USD"
        },
        "note": "Converted at the published reference rate on 2026-10-23, not at the price's as_of date. Indicative only."
      }
    },
    {
      "id": "po_20261025_578f5518b14a",
      "series_key": "ps_eb19026a623e72d7",
      "kind": "benchmark",
      "use_case_id": "dock-pier-inspection",
      "use_case_ids": [
        "dock-pier-inspection"
      ],
      "provider_id": null,
      "description": "CHASING M2 PRO light-industrial inspection ROV (150 m), base package, dealer sale price (list $4,199) — The Robot Direct",
      "low": 3599,
      "high": 3599,
      "currency": "USD",
      "unit": "per unit",
      "region": "US",
      "source_url": "https://therobotdirect.com/products/chasing-m2-pro-professional-underwater-rov",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-25T19:43:25.629Z",
      "content_hash": "sha256:578f5518b14a96421dd8abf20f6a0157998dba1a7dba4924d231140ee2bee977",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 3599,
        "high": 3599,
        "note": "Already in target currency; no conversion."
      }
    },
    {
      "id": "po_20261025_962f36cb49c8",
      "series_key": "ps_9a516ff34c04374d",
      "kind": "benchmark",
      "use_case_id": "dock-pier-inspection",
      "use_case_ids": [
        "dock-pier-inspection"
      ],
      "provider_id": null,
      "description": "CHASING M2 PRO inspection ROV, Canadian dealer price (list CAD 6,599) — Unmanned Canada",
      "low": 5249,
      "high": 5249,
      "currency": "CAD",
      "unit": "per unit",
      "region": "CA",
      "source_url": "https://unmannedcanada.com/products/chasing-m2-pro-rov-light-industrial-grade-underwater-drone-for-professional-scenario",
      "as_of": "2026-10-25",
      "observed_at": "2026-10-25T19:43:25.629Z",
      "content_hash": "sha256:962f36cb49c8bd77a905b5c218e17b3936a07fe1884e965a1b1dbf91f87c98c1",
      "supersedes": null,
      "origin": "build",
      "change_reason": null,
      "current": true,
      "usd": {
        "currency": "USD",
        "low": 3751,
        "high": 3751,
        "fx": {
          "pair": "CAD/USD",
          "rate": 0.714541,
          "cad_per_usd": 1.3995,
          "rate_date": "2026-10-23",
          "source": "European Central Bank reference rates via Frankfurter",
          "source_url": "https://api.frankfurter.dev/v1/latest?base=USD"
        },
        "note": "Converted at the published reference rate on 2026-10-23, not at the price's as_of date. Indicative only."
      }
    }
  ],
  "series": [
    {
      "series_key": "ps_4d159d7b6e16ab55",
      "kind": "benchmark",
      "use_case_id": "dock-pier-inspection",
      "provider_id": null,
      "description": "Buy your own inspection ROV: Blue Robotics BlueROV2, starting price (sonar and accessories extra)",
      "currency": "USD",
      "unit": "per unit",
      "region": "US",
      "source_url": "https://bluerobotics.com/store/rov/bluerov2/",
      "observations": 1,
      "first_observed_at": "2026-10-25T16:36:25.503Z",
      "last_observed_at": "2026-10-25T16:36:25.503Z",
      "current": true,
      "latest": {
        "low": 4900,
        "high": null,
        "as_of": "2026-10-25",
        "id": "po_20261025_d69d8130c9e8"
      },
      "trend": null,
      "last_rechecked": null
    },
    {
      "series_key": "ps_09a327f167184264",
      "kind": "provider_published",
      "use_case_id": null,
      "provider_id": "harlem-subsea",
      "description": "ROV underwater inspection (quay, boat or structure) with written report, starting price",
      "currency": "NOK",
      "unit": "per inspection",
      "region": "NO-31",
      "source_url": "https://harlemsubsea.no/",
      "observations": 1,
      "first_observed_at": "2026-10-25T18:35:04.403Z",
      "last_observed_at": "2026-10-25T18:35:04.403Z",
      "current": true,
      "latest": {
        "low": 2500,
        "high": null,
        "as_of": "2026-10-25",
        "id": "po_20261025_f4f24c94e71b"
      },
      "trend": null,
      "last_rechecked": null
    },
    {
      "series_key": "ps_eb19026a623e72d7",
      "kind": "benchmark",
      "use_case_id": "dock-pier-inspection",
      "provider_id": null,
      "description": "CHASING M2 PRO light-industrial inspection ROV (150 m), base package, dealer sale price (list $4,199) — The Robot Direct",
      "currency": "USD",
      "unit": "per unit",
      "region": "US",
      "source_url": "https://therobotdirect.com/products/chasing-m2-pro-professional-underwater-rov",
      "observations": 1,
      "first_observed_at": "2026-10-25T19:43:25.629Z",
      "last_observed_at": "2026-10-25T19:43:25.629Z",
      "current": true,
      "latest": {
        "low": 3599,
        "high": 3599,
        "as_of": "2026-10-25",
        "id": "po_20261025_578f5518b14a"
      },
      "trend": null,
      "last_rechecked": null
    },
    {
      "series_key": "ps_9a516ff34c04374d",
      "kind": "benchmark",
      "use_case_id": "dock-pier-inspection",
      "provider_id": null,
      "description": "CHASING M2 PRO inspection ROV, Canadian dealer price (list CAD 6,599) — Unmanned Canada",
      "currency": "CAD",
      "unit": "per unit",
      "region": "CA",
      "source_url": "https://unmannedcanada.com/products/chasing-m2-pro-rov-light-industrial-grade-underwater-drone-for-professional-scenario",
      "observations": 1,
      "first_observed_at": "2026-10-25T19:43:25.629Z",
      "last_observed_at": "2026-10-25T19:43:25.629Z",
      "current": true,
      "latest": {
        "low": 5249,
        "high": 5249,
        "as_of": "2026-10-25",
        "id": "po_20261025_962f36cb49c8"
      },
      "trend": null,
      "last_rechecked": null
    }
  ],
  "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": 4,
    "limit": 200,
    "offset": 0,
    "returned": 4,
    "next_offset": null,
    "next": null,
    "prev": null
  },
  "license": "Whirrwork (https://whirrwork.com), CC BY 4.0"
}