{
  "contract": {
    "agency_name": "Department of Defence",
    "amendment_count": 6,
    "category_code": "72100000",
    "contract_end_date": "2028-06-30",
    "contract_id": "CN4002456",
    "contract_start_date": "2023-08-01",
    "currency": "AUD",
    "current_reported_value": "870931904.78",
    "description": "Construction Support Services",
    "events": [
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-26a68953c9b9428d975a24ebefe70983-126a4a8cf6713ed4be081c9c9bfa0955",
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        "contract_id": "CN4002456",
        "detected_at": "2026-02-04T20:47:30Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "9f9624c7d87d9ceebbaad718d3856b3bb402598855d24f26a4c0c57adb74309c",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "78963872.55",
        "notice_id": "CN4002456-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/61bbc9c1-a174-473e-b88a-075d5a9ab094",
        "old_value": "1639000.00",
        "percentage_change": "4717.81",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "summary": "Reported contract value increased by $77,324,872.55 (+4717.81%)."
      },
      {
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-26a68953c9b9428d975a24ebefe70983-9eb0a9e0f4393c3b8583d2e3214a5abf",
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        "detected_at": "2026-02-04T20:47:30Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "ac1d430d67e0493c67cb059d77b285bb977cf7d99e361e5fd22b6f6ca029c369",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "126401372.55",
        "notice_id": "CN4002456-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/4bd344b6-a9b3-45b0-833a-c15dab95dc0f",
        "old_value": "78963872.55",
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        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "summary": "Reported contract value increased by $47,437,500.00 (+60.07%)."
      },
      {
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
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        "direction": "increase",
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        "event_id": "d3eb8a25b8ff3ceddff2caacc3ddb7df1029b7c94b891077aab5bd97386344cb",
        "field_label": "Reported Value",
        "field_name": "reported_value",
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        "notice_id": "CN4002456-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/0808fa15-fba9-47f2-8ade-8f507c9054c1",
        "old_value": "126401372.55",
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        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "summary": "Reported contract value increased by $729,539,670.65 (+577.16%)."
      },
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
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        "contract_id": "CN4002456",
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        "direction": "increase",
        "duration_change_days": null,
        "event_id": "de4c5b51595d1a05f5ddbb7b52a938356c620af63c154f825819b2df8231db39",
        "field_label": "Reported Value",
        "field_name": "reported_value",
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        "notice_id": "CN4002456-A4",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/c7d63a30-b8a6-41b1-86f1-e3fdf7882ab5",
        "old_value": "855941043.20",
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        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "summary": "Reported contract value increased by $12,533,702.83 (+1.46%)."
      },
      {
        "absolute_change": "2399709.38",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-26a68953c9b9428d975a24ebefe70983-2bbbcb56a19535e2a291f026f6dde4c0",
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        "contract_id": "CN4002456",
        "detected_at": "2026-02-04T20:47:30Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "9d7298dd1a8adcae81191c2111a7b49a312fab265fd9492e83ea31c0f8106de1",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "870874455.41",
        "notice_id": "CN4002456-A5",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/9ee41cb3-6fba-4b30-8de7-1322fce524a1",
        "old_value": "868474746.03",
        "percentage_change": "0.28",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "summary": "Reported contract value increased by $2,399,709.38 (+0.28%)."
      },
      {
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-26a68953c9b9428d975a24ebefe70983-302816755413307ebe1f6417f066c9b2",
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        "contract_id": "CN4002456",
        "detected_at": "2026-02-04T20:47:30Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "a84749b6e2858b2c7e7c95feb8f04d448353a8207f8b6edc75279793281d0417",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "870931904.78",
        "notice_id": "CN4002456-A6",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/aafc77ee-cd93-4532-8a41-0c42c3edd95d",
        "old_value": "870874455.41",
        "percentage_change": "0.01",
        "source_license": "https://creativecommons.org/licenses/by/3.0/au/",
        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "summary": "Reported contract value increased by $57,449.37 (+0.01%)."
      }
    ],
    "evidence_path": "evidence/CN4002456.json",
    "latest_modified_at": "2026-02-04T20:47:30Z",
    "notice_id": "CN4002456-A6",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/aafc77ee-cd93-4532-8a41-0c42c3edd95d",
    "original_reported_value": "1639000.00",
    "procurement_method": "Open tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
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    "value_change_percentage": "53038.01",
    "versions": [
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "supplier_name": "CPB CONTRACTORS PTY LIMITED",
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      {
        "agency_name": "Department of Defence",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "supplier_name": "CPB CONTRACTORS PTY LIMITED",
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      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "supplier_name": "CPB CONTRACTORS PTY LIMITED",
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      {
        "agency_name": "Department of Defence",
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        "contract_start_date": "2023-08-01",
        "currency": "AUD",
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        "official_record_url": "https://www.tenders.gov.au/Cn/Show/9ee41cb3-6fba-4b30-8de7-1322fce524a1",
        "procurement_method": "Open tender",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "supplier_name": "CPB CONTRACTORS PTY LIMITED",
        "title": "4600058998"
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      {
        "agency_name": "Department of Defence",
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        "currency": "AUD",
        "description": "Construction Support Services",
        "notice_id": "CN4002456-A6",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/aafc77ee-cd93-4532-8a41-0c42c3edd95d",
        "procurement_method": "Open tender",
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        "source_hash": "7567a7e36833e1892e924f111bbe34db50ece00e4a2c1cc1c558cf6a1056ae50",
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        "source_release_id": "prod-26a68953c9b9428d975a24ebefe70983-302816755413307ebe1f6417f066c9b2",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4002456",
        "supplier_name": "CPB CONTRACTORS PTY LIMITED",
        "title": "4600058998"
      }
    ]
  },
  "disclaimer": "ContractDelta identifies changes in publicly reported procurement records. A change is not evidence of misconduct. Contract amendments can result from legitimate changes in scope, timing, pricing, reporting, or data correction.",
  "generated_at": "2026-07-17T05:22:06Z",
  "schema_version": "1.0",
  "source": {
    "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
    "coverage": {
      "amended_contracts_discovered": 851,
      "amended_contracts_selected": 20,
      "amended_contracts_skipped": 831,
      "max_amended_contracts": 20,
      "mode": "bounded_amendments",
      "query_end": "2026-07-20T23:59:59.999999Z",
      "query_start": "2026-07-12T00:00:00Z",
      "selection_method": "Explicit amendment contracts were ranked by current reported value, then source modification time and contract ID. Only the highest-ranked bounded set was processed."
    },
    "license": "https://creativecommons.org/licenses/by/3.0/au/",
    "name": "AusTender OCDS API",
    "publisher": "Australian Government Department of Finance"
  }
}