{
  "schema_version": 1,
  "source_compilation_context": {
    "oh": {
      "attribution": {
        "inventory": {
          "name": "Compute Atlas",
          "creator": "Edward Kubiak",
          "url": "https://www.compute-atlas.com/api",
          "license": "CC BY 4.0",
          "license_url": "https://creativecommons.org/licenses/by/4.0/",
          "snapshot_url": "https://www.compute-atlas.com/api/facilities",
          "retrieved": "2026-10-14",
          "sha256": "79ad432dab7c128e428234c9d0dd40933114b415a4a5d697db00095637d50f37",
          "changes": "Added provenance, publication-date distinctions, display-safe wording, quarantine flags and state partitioning. Original source records retained locally."
        },
        "counties": "U.S. Census Bureau county boundaries (public domain)",
        "research": "Field-specific source context. See the linked source and limits on each record."
      },
      "source_data_url": "https://datacentersatlas.com/data/oh.json",
      "updated": "2026-10-24"
    }
  },
  "scope": "Retained county context, which can be broad or unresolved. No parcel or municipal jurisdiction is inferred. Research records retain their sources, dates and location limits. Counts are not a census of operating buildings. Company name links alone do not establish ownership or operation.",
  "collection": {
    "kind": "counties",
    "key": "39063",
    "label": "Hancock County, Ohio"
  },
  "records": [
    {
      "id": "mara-findlay-oh",
      "state": "oh",
      "kind": "facility",
      "name": "MARA Findlay Data Center",
      "group": "unknown",
      "status": "Status unclear",
      "raw_status": "",
      "status_field": "",
      "crypto": true,
      "type": "Crypto/HPC (inventory classification)",
      "counties": [
        "Hancock"
      ],
      "city": "Findlay",
      "address": "",
      "who": "",
      "end_user": "",
      "mw": null,
      "power": "",
      "power_note": "",
      "investment": "",
      "jobs": "",
      "acres": null,
      "utility": "",
      "water": "",
      "incentives": "",
      "note": "Manual source context is available for this inherited inventory record. The inventory label and approximate geography are retained for discovery. This is not certification of current operation, ownership, a separate physical building, technical capacity or a precise parcel. Missing fields remain unknown. MARA historical Findlay versus Ohio portfolio power. 372MWwholeOhioportfolioincludes150Findlayand222otheracquiredsites,notFindlayalone.152operationalincludes30Findlayand122others;historical2024notcurrent2026.222includes100expansionnotalloperating.270USD/kWacquisitionmultiplebasisnotconstructioncapexorcustomelectricrate. No observed2025targetfulfillmentorcriticalITlabel. Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building.",
      "date": "",
      "events": [
        [
          "2024-11-11",
          "MARA published its Findlay development and capacity account November 11, 2024. This records the dated company publication, not an exact physical opening or verification that its year end 2025 expansion forecast was accomplished."
        ]
      ],
      "timeline": [],
      "opened": "",
      "tier": "",
      "sources": [
        {
          "url": "https://ir.mara.com/news-events/press-releases/detail/1375/mara-adds-372-megawatts-of-capacity-in-ohio-with-152-megawatts-operational-and-220-megawatts-in-development",
          "host": "ir.mara.com",
          "date": "2024-11-11",
          "published": "2024-11-11",
          "checked": "2026-10-14",
          "date_kind": "publication",
          "label": "Reviewed source"
        },
        {
          "url": "https://ir.mara.com/sec-filings/all-sec-filings/content/0001507605-26-000022/0001507605-26-000022.pdf",
          "host": "ir.mara.com",
          "published": "2026-08-06",
          "date": "2026-08-06",
          "checked": "2026-10-23",
          "label": "Reviewed government record"
        }
      ],
      "loc": {
        "lat": 41.00192,
        "lng": -83.66649,
        "precision": "county",
        "basis": "Shown at county level only. The dot is placed inside the county for the map and is not the site, its address or a parcel."
      },
      "reviewed_evidence": [
        {
          "overlay": "operator-primary-review-round10-2026-10-14.json",
          "scope": "MARA historical Findlay versus Ohio portfolio power",
          "fields": {
            "issuer": "MARA",
            "announcement_date": "2024-11-11",
            "findlay_planned_capacity_mw": 150,
            "findlay_reported_existing_capacity_mw_at_announcement": 30,
            "historical_full_energization_target": "end2025",
            "three_ohio_sites_total_interconnect_approved_capacity_mw": 372,
            "three_sites_operational_at_announcement_mw": 152,
            "three_sites_in_development_at_announcement_mw": 220,
            "other_acquired_sites": [
              "Hannibal",
              "Hopedale"
            ],
            "other_two_sites_combined_interconnect_approved_mw": 222,
            "other_sites_acquisition_date": "2024-11-05"
          },
          "notes": [
            "372MWwholeOhioportfolioincludes150Findlayand222otheracquiredsites,notFindlayalone.152operationalincludes30Findlayand122others;historical2024notcurrent2026.222includes100expansionnotalloperating.270USD/kWacquisitionmultiplebasisnotconstructioncapexorcustomelectricrate. No observed2025targetfulfillmentorcriticalITlabel.",
            "Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building."
          ],
          "sources": [
            {
              "url": "https://ir.mara.com/news-events/press-releases/detail/1375/mara-adds-372-megawatts-of-capacity-in-ohio-with-152-megawatts-operational-and-220-megawatts-in-development",
              "host": "ir.mara.com",
              "date": "2024-11-11",
              "published": "2024-11-11",
              "checked": "2026-10-14",
              "date_kind": "publication",
              "label": "Reviewed source"
            }
          ],
          "whole_record_certified": false
        },
        {
          "overlay": "Codex 3 research cohort 33",
          "scope": "The November 11, 2024 release describes Findlay development and some existing capacity while forecasting later energization. The captured 2026 quarterly filing has no accepted named current Findlay service or physical completion section. An old capacity statement and passed 2025 target are not full campus operation. Historic activity is retained while present exact component phase, commissioning and delivered quantities remain unclear.",
          "fields": {
            "current_stage_evidence": {
              "outcome": "historic_findlay_capacity_and_elapsed_forecast_not_current_completion",
              "scope": "The November 11, 2024 release describes Findlay development and some existing capacity while forecasting later energization. The captured 2026 quarterly filing has no accepted named current Findlay service or physical completion section. An old capacity statement and passed 2025 target are not full campus operation. Historic activity is retained while present exact component phase, commissioning and delivered quantities remain unclear."
            }
          },
          "notes": [
            "The November 11, 2024 release describes Findlay development and some existing capacity while forecasting later energization. The captured 2026 quarterly filing has no accepted named current Findlay service or physical completion section. An old capacity statement and passed 2025 target are not full campus operation. Historic activity is retained while present exact component phase, commissioning and delivered quantities remain unclear.",
            "The review preserves existing identity, roles, locations, jurisdictions, quantities and physical opening fields. Source publication, checked dates and physical milestones remain distinct."
          ],
          "sources": [
            {
              "url": "https://ir.mara.com/news-events/press-releases/detail/1375/mara-adds-372-megawatts-of-capacity-in-ohio-with-152-megawatts-operational-and-220-megawatts-in-development",
              "host": "ir.mara.com",
              "published": "2024-11-11",
              "date": "2024-11-11",
              "checked": "2026-10-23",
              "label": "Reviewed operator source"
            },
            {
              "url": "https://ir.mara.com/sec-filings/all-sec-filings/content/0001507605-26-000022/0001507605-26-000022.pdf",
              "host": "ir.mara.com",
              "published": "2026-08-06",
              "date": "2026-08-06",
              "checked": "2026-10-23",
              "label": "Reviewed government record"
            }
          ],
          "checked": "2026-10-23",
          "whole_record_certified": false
        }
      ],
      "manual_source_reviewed": true,
      "whole_record_certified": false,
      "field_evidence_present": true,
      "inventory_label_retained": true,
      "precision_label": "Exact site not published; shown at county level",
      "summary": "Findlay · Hancock · Source context reviewed",
      "event_evidence": [
        {
          "date": "2024-11-11",
          "text": "MARA published its Findlay development and capacity account November 11, 2024. This records the dated company publication, not an exact physical opening or verification that its year end 2025 expansion forecast was accomplished.",
          "kind": "announced",
          "sources": [
            {
              "url": "https://ir.mara.com/news-events/press-releases/detail/1375/mara-adds-372-megawatts-of-capacity-in-ohio-with-152-megawatts-operational-and-220-megawatts-in-development",
              "host": "ir.mara.com",
              "published": "2024-11-11",
              "date": "2024-11-11",
              "checked": "2026-10-23",
              "label": "Reviewed operator source"
            }
          ]
        }
      ],
      "location_display": {
        "policy": "reviewed-map-references-2026-10-23",
        "decision": "withheld_unreviewed_point",
        "scope": "The available point evidence does not establish a supported site location. No site pin, nearby distance or aerial destination is published. The original coordinate and its provenance remain in research history.",
        "county_display": "39063"
      }
    }
  ],
  "compilation_license": "withheld_pending_owner_decision"
}