{
  "contract": {
    "agency_name": "Department of Defence",
    "amendment_count": 3,
    "category_code": "72100000",
    "contract_end_date": "2031-03-31",
    "contract_id": "CN4128644",
    "contract_start_date": "2025-03-31",
    "currency": "AUD",
    "current_reported_value": "347872780.08",
    "description": "Base Services",
    "events": [
      {
        "absolute_change": "-40103904.04",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-3514c60485ce3fdf9ad9853fde9976e3",
        "after_source_hash": "ed876310364098b98e2c9a9537d522311127d442a131ee8ca942f0d3cda516ad",
        "before_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-4c5b55f65800347db41f8f94167a8721",
        "before_source_hash": "2c340ce9c5cca401e98546f91beedbb4f9580e59c92abdc1ab0df650e66165e8",
        "contract_id": "CN4128644",
        "detected_at": "2026-01-20T23:04:47Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "5ceac22a8fb66acc7efc71032df1d8aaa741cec70858da8dd04206121c69d63f",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "345846670.86",
        "notice_id": "CN4128644-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/8f49f3c7-3446-448e-83b6-216dc69c2996",
        "old_value": "385950574.90",
        "percentage_change": "-10.39",
        "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/CN4128644",
        "summary": "Reported contract value decreased by $40,103,904.04 (-10.39%)."
      },
      {
        "absolute_change": "699101.90",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-921ab43868243a76bcc83bc556abfb7f",
        "after_source_hash": "61fbc46bf111ee5f96f15157d17c2bae5e6e7618df800908abbeac4c6bf7af5c",
        "before_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-3514c60485ce3fdf9ad9853fde9976e3",
        "before_source_hash": "ed876310364098b98e2c9a9537d522311127d442a131ee8ca942f0d3cda516ad",
        "contract_id": "CN4128644",
        "detected_at": "2026-01-20T23:04:47Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "23cd002f2fb8897c9471d474974c9df6813f091f14529f8429052f0737660f19",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "346545772.76",
        "notice_id": "CN4128644-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/299efed8-526a-42b1-ac0d-46dcb3cc11d2",
        "old_value": "345846670.86",
        "percentage_change": "0.20",
        "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/CN4128644",
        "summary": "Reported contract value increased by $699,101.90 (+0.20%)."
      },
      {
        "absolute_change": "1327007.32",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-9fac6299a3bc31d1b2cf68f789bd649d",
        "after_source_hash": "315897ee9a8f96e62bde887f9e2b43c15084097c62e8f6fab67050a0d4f72bf7",
        "before_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-921ab43868243a76bcc83bc556abfb7f",
        "before_source_hash": "61fbc46bf111ee5f96f15157d17c2bae5e6e7618df800908abbeac4c6bf7af5c",
        "contract_id": "CN4128644",
        "detected_at": "2026-01-20T23:04:47Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "cc6c2d2930a0305755818182a637230a7e4ffc95f9879fa56acb6e64162491af",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "347872780.08",
        "notice_id": "CN4128644-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/4d6c4d52-c90d-43d5-ac4f-9940c9387f7d",
        "old_value": "346545772.76",
        "percentage_change": "0.38",
        "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/CN4128644",
        "summary": "Reported contract value increased by $1,327,007.32 (+0.38%)."
      }
    ],
    "evidence_path": "evidence/CN4128644.json",
    "latest_modified_at": "2026-01-20T23:04:47Z",
    "notice_id": "CN4128644-A3",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/4d6c4d52-c90d-43d5-ac4f-9940c9387f7d",
    "original_reported_value": "385950574.90",
    "procurement_method": "Open tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4128644",
    "supplier_name": "VEOLIA ENVIRONMENTAL SERVICES (AUSTRALIA) PTY LTD - GEMS PROJECT",
    "title": "5200000056",
    "value_change": "-38077794.82",
    "value_change_percentage": "-9.87",
    "versions": [
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2031-03-31",
        "contract_id": "CN4128644",
        "contract_start_date": "2025-03-31",
        "currency": "AUD",
        "description": "Base Services",
        "notice_id": "CN4128644",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/9200574d-1542-41fa-9442-8c13cef2cb83",
        "procurement_method": "Open tender",
        "reported_value": "385950574.90",
        "source_hash": "2c340ce9c5cca401e98546f91beedbb4f9580e59c92abdc1ab0df650e66165e8",
        "source_modified_at": "2025-02-18T21:24:31Z",
        "source_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-4c5b55f65800347db41f8f94167a8721",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4128644",
        "supplier_name": "VEOLIA ENVIRONMENTAL SERVICES (AUSTRALIA) PTY LTD - GEMS PROJECT",
        "title": "5200000056"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2031-03-31",
        "contract_id": "CN4128644",
        "contract_start_date": "2025-03-31",
        "currency": "AUD",
        "description": "Base Services",
        "notice_id": "CN4128644-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/8f49f3c7-3446-448e-83b6-216dc69c2996",
        "procurement_method": "Open tender",
        "reported_value": "345846670.86",
        "source_hash": "ed876310364098b98e2c9a9537d522311127d442a131ee8ca942f0d3cda516ad",
        "source_modified_at": "2026-01-20T23:04:47Z",
        "source_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-3514c60485ce3fdf9ad9853fde9976e3",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4128644",
        "supplier_name": "VEOLIA ENVIRONMENTAL SERVICES (AUSTRALIA) PTY LTD - GEMS PROJECT",
        "title": "5200000056"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2031-03-31",
        "contract_id": "CN4128644",
        "contract_start_date": "2025-03-31",
        "currency": "AUD",
        "description": "Base Services",
        "notice_id": "CN4128644-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/299efed8-526a-42b1-ac0d-46dcb3cc11d2",
        "procurement_method": "Open tender",
        "reported_value": "346545772.76",
        "source_hash": "61fbc46bf111ee5f96f15157d17c2bae5e6e7618df800908abbeac4c6bf7af5c",
        "source_modified_at": "2026-01-20T23:04:47Z",
        "source_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-921ab43868243a76bcc83bc556abfb7f",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4128644",
        "supplier_name": "VEOLIA ENVIRONMENTAL SERVICES (AUSTRALIA) PTY LTD - GEMS PROJECT",
        "title": "5200000056"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2031-03-31",
        "contract_id": "CN4128644",
        "contract_start_date": "2025-03-31",
        "currency": "AUD",
        "description": "Base Services",
        "notice_id": "CN4128644-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/4d6c4d52-c90d-43d5-ac4f-9940c9387f7d",
        "procurement_method": "Open tender",
        "reported_value": "347872780.08",
        "source_hash": "315897ee9a8f96e62bde887f9e2b43c15084097c62e8f6fab67050a0d4f72bf7",
        "source_modified_at": "2026-01-20T23:04:47Z",
        "source_release_id": "prod-e7b71b051c144353ac7cbdba450ae2dc-9fac6299a3bc31d1b2cf68f789bd649d",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4128644",
        "supplier_name": "VEOLIA ENVIRONMENTAL SERVICES (AUSTRALIA) PTY LTD - GEMS PROJECT",
        "title": "5200000056"
      }
    ]
  },
  "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"
  }
}