{
  "contract": {
    "agency_name": "Department of Defence",
    "amendment_count": 2,
    "category_code": "72100000",
    "contract_end_date": "2028-12-31",
    "contract_id": "CN4037447",
    "contract_start_date": "2024-02-01",
    "currency": "AUD",
    "current_reported_value": "290821430.03",
    "description": "Construction Services",
    "events": [
      {
        "absolute_change": null,
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-432e4930266738bea7cc1ddfee1c82ed",
        "after_source_hash": "9d2f2c5e4ef7947be932c0440bf82d99e267cf5d6c3542616b4fddabe2768d27",
        "before_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-3f267c8b4d6a3712a893370a27636f7e",
        "before_source_hash": "a4468939cfc68a0a775ca22be6cd99121920d27fe6f8d355bcdaa4f4ab53bc32",
        "contract_id": "CN4037447",
        "detected_at": "2025-09-21T21:48:07Z",
        "direction": "changed",
        "duration_change_days": null,
        "event_id": "17dcc4e3ba629eabef58ca305e86eeb8f177a8392ed51ecfca2bb1ffc2380dc4",
        "field_label": "Supplier Name",
        "field_name": "supplier_name",
        "new_value": "ADCO",
        "notice_id": "CN4037447-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/41e984ee-2f98-4921-a5ef-61a7d7f51d78",
        "old_value": "ADCO CONSTRUCTIONS PTY LTD",
        "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/CN4037447",
        "summary": "Supplier changed."
      },
      {
        "absolute_change": "231478093.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-432e4930266738bea7cc1ddfee1c82ed",
        "after_source_hash": "9d2f2c5e4ef7947be932c0440bf82d99e267cf5d6c3542616b4fddabe2768d27",
        "before_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-3f267c8b4d6a3712a893370a27636f7e",
        "before_source_hash": "a4468939cfc68a0a775ca22be6cd99121920d27fe6f8d355bcdaa4f4ab53bc32",
        "contract_id": "CN4037447",
        "detected_at": "2025-09-21T21:48:07Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "e031a6790a31d9cfcd7994ea90b6550fe590e133f18c6d6d82b483d027a40576",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "231749071.40",
        "notice_id": "CN4037447-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/41e984ee-2f98-4921-a5ef-61a7d7f51d78",
        "old_value": "270978.40",
        "percentage_change": "85423.08",
        "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/CN4037447",
        "summary": "Reported contract value increased by $231,478,093.00 (+85423.08%)."
      },
      {
        "absolute_change": "59072358.63",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-1dfddd58b1073a54a927878301af93ac",
        "after_source_hash": "875558a019cf894c439a3047660bb16d2deb2b49f06374aa8ba265bff8c9abbc",
        "before_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-432e4930266738bea7cc1ddfee1c82ed",
        "before_source_hash": "9d2f2c5e4ef7947be932c0440bf82d99e267cf5d6c3542616b4fddabe2768d27",
        "contract_id": "CN4037447",
        "detected_at": "2025-09-21T21:48:07Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "f5fe9e2d08d5d89898659f9bcfab99a4f3659dc923ffd72f70a6cc5cf1ddda89",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "290821430.03",
        "notice_id": "CN4037447-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/734bdacf-70dc-4c7a-818f-037e6ca5d04c",
        "old_value": "231749071.40",
        "percentage_change": "25.49",
        "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/CN4037447",
        "summary": "Reported contract value increased by $59,072,358.63 (+25.49%)."
      }
    ],
    "evidence_path": "evidence/CN4037447.json",
    "latest_modified_at": "2025-09-21T21:48:07Z",
    "notice_id": "CN4037447-A2",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/734bdacf-70dc-4c7a-818f-037e6ca5d04c",
    "original_reported_value": "270978.40",
    "procurement_method": "Open tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4037447",
    "supplier_name": "ADCO",
    "title": "4600066336",
    "value_change": "290550451.63",
    "value_change_percentage": "107222.73",
    "versions": [
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2028-12-31",
        "contract_id": "CN4037447",
        "contract_start_date": "2024-02-01",
        "currency": "AUD",
        "description": "Construction Services",
        "notice_id": "CN4037447",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/fb249404-527e-4ce0-8f4a-ce731f78fea3",
        "procurement_method": "Open tender",
        "reported_value": "270978.40",
        "source_hash": "a4468939cfc68a0a775ca22be6cd99121920d27fe6f8d355bcdaa4f4ab53bc32",
        "source_modified_at": "2024-02-29T02:53:58Z",
        "source_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-3f267c8b4d6a3712a893370a27636f7e",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4037447",
        "supplier_name": "ADCO CONSTRUCTIONS PTY LTD",
        "title": "4600066336"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2028-12-31",
        "contract_id": "CN4037447",
        "contract_start_date": "2024-02-01",
        "currency": "AUD",
        "description": "Construction Services",
        "notice_id": "CN4037447-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/41e984ee-2f98-4921-a5ef-61a7d7f51d78",
        "procurement_method": "Open tender",
        "reported_value": "231749071.40",
        "source_hash": "9d2f2c5e4ef7947be932c0440bf82d99e267cf5d6c3542616b4fddabe2768d27",
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        "source_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-432e4930266738bea7cc1ddfee1c82ed",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4037447",
        "supplier_name": "ADCO",
        "title": "4600066336"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2028-12-31",
        "contract_id": "CN4037447",
        "contract_start_date": "2024-02-01",
        "currency": "AUD",
        "description": "Construction Services",
        "notice_id": "CN4037447-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/734bdacf-70dc-4c7a-818f-037e6ca5d04c",
        "procurement_method": "Open tender",
        "reported_value": "290821430.03",
        "source_hash": "875558a019cf894c439a3047660bb16d2deb2b49f06374aa8ba265bff8c9abbc",
        "source_modified_at": "2025-09-21T21:48:07Z",
        "source_release_id": "prod-1fd9b1aab14443b5b2ece92e8e44f77d-1dfddd58b1073a54a927878301af93ac",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4037447",
        "supplier_name": "ADCO",
        "title": "4600066336"
      }
    ]
  },
  "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": "2026-07-31T04:07:58Z",
  "schema_version": "1.0",
  "source": {
    "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
    "coverage": {
      "amended_contracts_discovered": 950,
      "amended_contracts_selected": 20,
      "amended_contracts_skipped": 930,
      "max_amended_contracts": 20,
      "mode": "bounded_amendments",
      "query_end": "2026-08-03T23:59:59.999999Z",
      "query_start": "2026-07-26T00:00:00Z",
      "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"
  }
}