{
  "contract": {
    "agency_name": "Department of Defence",
    "amendment_count": 3,
    "category_code": "80161500",
    "contract_end_date": "2026-06-30",
    "contract_id": "CN4066285",
    "contract_start_date": "2024-07-01",
    "currency": "AUD",
    "current_reported_value": "3773092.58",
    "description": "Technical Operation Support",
    "events": [
      {
        "absolute_change": "2182471.94",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-da651c6949554854ac1998691db29c6b-a6b992c09210359aadd3fc2ae77bb6db",
        "after_source_hash": "f9914a862aa4cc7975b64bd4a761d50c1a4df2887c8773775a7e805cd1a5aa0e",
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        "before_source_hash": "7e79eec257de8c336d024eb5d5f37aca226944c4c62d0a87d46ec317e56657f7",
        "contract_id": "CN4066285",
        "detected_at": "2025-07-21T03:58:48Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "5f228a7acc97fe87b7218823e7eeccf010d2c0a0881c72d70e46e4dc8fa1a5ff",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "4389456.84",
        "notice_id": "CN4066285-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/e09e70bc-6aea-4992-83de-a5ce08e386ad",
        "old_value": "2206984.90",
        "percentage_change": "98.89",
        "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/CN4066285",
        "summary": "Reported contract value increased by $2,182,471.94 (+98.89%)."
      },
      {
        "absolute_change": "-290168.28",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-da651c6949554854ac1998691db29c6b-8efc72839f02332e84b72cf8f4b23286",
        "after_source_hash": "7894f754c75d96b7c49f83b486ac91c0b765f939bc86eeeb261af9758b7ba86a",
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        "before_source_hash": "f9914a862aa4cc7975b64bd4a761d50c1a4df2887c8773775a7e805cd1a5aa0e",
        "contract_id": "CN4066285",
        "detected_at": "2025-07-21T03:58:48Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "427b09d7df51807e93f6780c43fa2b9595b67612d9c67328a3e59ef033f8815d",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "4099288.56",
        "notice_id": "CN4066285-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/0a6a07e7-d7e3-43c2-be28-c2c121dabb7f",
        "old_value": "4389456.84",
        "percentage_change": "-6.61",
        "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/CN4066285",
        "summary": "Reported contract value decreased by $290,168.28 (-6.61%)."
      },
      {
        "absolute_change": "-326195.98",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-da651c6949554854ac1998691db29c6b-49c2a4c02f153e599cbc20c65b8aa51f",
        "after_source_hash": "97c1b32988d892112dc4d1acc7d63f781820e6dcf8eff7480070fffa0dbced01",
        "before_release_id": "prod-da651c6949554854ac1998691db29c6b-8efc72839f02332e84b72cf8f4b23286",
        "before_source_hash": "7894f754c75d96b7c49f83b486ac91c0b765f939bc86eeeb261af9758b7ba86a",
        "contract_id": "CN4066285",
        "detected_at": "2025-07-21T03:58:48Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "345cf2739dec47995ff15b32f2bb6b5d3375d5421ae2bfce5076fb41c8d17e99",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3773092.58",
        "notice_id": "CN4066285-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/06286221-6257-417b-9359-41d2c5f3a20c",
        "old_value": "4099288.56",
        "percentage_change": "-7.96",
        "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/CN4066285",
        "summary": "Reported contract value decreased by $326,195.98 (-7.96%)."
      },
      {
        "absolute_change": null,
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-da651c6949554854ac1998691db29c6b-49c2a4c02f153e599cbc20c65b8aa51f",
        "after_source_hash": "97c1b32988d892112dc4d1acc7d63f781820e6dcf8eff7480070fffa0dbced01",
        "before_release_id": "prod-da651c6949554854ac1998691db29c6b-8efc72839f02332e84b72cf8f4b23286",
        "before_source_hash": "7894f754c75d96b7c49f83b486ac91c0b765f939bc86eeeb261af9758b7ba86a",
        "contract_id": "CN4066285",
        "detected_at": "2025-07-21T03:58:48Z",
        "direction": "changed",
        "duration_change_days": null,
        "event_id": "4ba3358c047d496b599f613cf8884a778c437793c1752889d95f5a2e5b35a53a",
        "field_label": "Supplier Name",
        "field_name": "supplier_name",
        "new_value": "DOWNER PROFESSIONAL SERVICES PTY LTD",
        "notice_id": "CN4066285-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/06286221-6257-417b-9359-41d2c5f3a20c",
        "old_value": "DOWNER PROFESSIONAL SERVICES PTY LT",
        "percentage_change": null,
        "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/CN4066285",
        "summary": "Supplier changed."
      }
    ],
    "evidence_path": "evidence/CN4066285.json",
    "latest_modified_at": "2025-07-21T03:58:48Z",
    "notice_id": "CN4066285-A3",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/06286221-6257-417b-9359-41d2c5f3a20c",
    "original_reported_value": "2206984.90",
    "procurement_method": "Open tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4066285",
    "supplier_name": "DOWNER PROFESSIONAL SERVICES PTY LTD",
    "title": "4600073149",
    "value_change": "1566107.68",
    "value_change_percentage": "70.96",
    "versions": [
      {
        "agency_name": "Department of Defence",
        "category_code": "80161500",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4066285",
        "contract_start_date": "2024-07-01",
        "currency": "AUD",
        "description": "Technical Operation Support",
        "notice_id": "CN4066285",
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        "procurement_method": "Open tender",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4066285",
        "supplier_name": "DOWNER PROFESSIONAL SERVICES PTY LT",
        "title": "4600073149"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "80161500",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4066285",
        "contract_start_date": "2024-07-01",
        "currency": "AUD",
        "description": "Technical Operation Support",
        "notice_id": "CN4066285-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/e09e70bc-6aea-4992-83de-a5ce08e386ad",
        "procurement_method": "Open tender",
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        "source_release_id": "prod-da651c6949554854ac1998691db29c6b-a6b992c09210359aadd3fc2ae77bb6db",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4066285",
        "supplier_name": "DOWNER PROFESSIONAL SERVICES PTY LT",
        "title": "4600073149"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "80161500",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4066285",
        "contract_start_date": "2024-07-01",
        "currency": "AUD",
        "description": "Technical Operation Support",
        "notice_id": "CN4066285-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/0a6a07e7-d7e3-43c2-be28-c2c121dabb7f",
        "procurement_method": "Open tender",
        "reported_value": "4099288.56",
        "source_hash": "7894f754c75d96b7c49f83b486ac91c0b765f939bc86eeeb261af9758b7ba86a",
        "source_modified_at": "2025-07-21T03:58:48Z",
        "source_release_id": "prod-da651c6949554854ac1998691db29c6b-8efc72839f02332e84b72cf8f4b23286",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4066285",
        "supplier_name": "DOWNER PROFESSIONAL SERVICES PTY LT",
        "title": "4600073149"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "80161500",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4066285",
        "contract_start_date": "2024-07-01",
        "currency": "AUD",
        "description": "Technical Operation Support",
        "notice_id": "CN4066285-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/06286221-6257-417b-9359-41d2c5f3a20c",
        "procurement_method": "Open tender",
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        "source_hash": "97c1b32988d892112dc4d1acc7d63f781820e6dcf8eff7480070fffa0dbced01",
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        "source_release_id": "prod-da651c6949554854ac1998691db29c6b-49c2a4c02f153e599cbc20c65b8aa51f",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4066285",
        "supplier_name": "DOWNER PROFESSIONAL SERVICES PTY LTD",
        "title": "4600073149"
      }
    ]
  },
  "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"
  }
}