{
  "contract": {
    "agency_name": "Department of Defence",
    "amendment_count": 3,
    "category_code": "72100000",
    "contract_end_date": "2026-06-30",
    "contract_id": "CN4094452",
    "contract_start_date": "2024-08-30",
    "currency": "AUD",
    "current_reported_value": "3519859.60",
    "description": "Construction Works",
    "events": [
      {
        "absolute_change": "34409.63",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-15268d5662043cb28495d537cc5e67cb",
        "after_source_hash": "220bce1bedb0767341e541bbad678e7d8321b696b93e4f3ffdba2cf6f898a730",
        "before_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-8516d361e86136e0a404f7349a5b6fec",
        "before_source_hash": "3d4bb7b9b477b2af5dc765cefb249f57327385eaf23c9245f5ffb5e52d87ef41",
        "contract_id": "CN4094452",
        "detected_at": "2025-07-22T22:46:23Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "2feba755b73a981068c98a2fd7bb73161945f9448aca5840739961abf6e12ad8",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3442295.43",
        "notice_id": "CN4094452-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/59a2d136-9d24-48a4-9dc4-e4c168731e92",
        "old_value": "3407885.80",
        "percentage_change": "1.01",
        "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/CN4094452",
        "summary": "Reported contract value increased by $34,409.63 (+1.01%)."
      },
      {
        "absolute_change": "242950.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-8220431896e13f6e80ac0223b2e4e152",
        "after_source_hash": "a237ec6b3eeae3b7dda8afe979c473babd8e50bb55ab59bdf020b4914b7d3b13",
        "before_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-15268d5662043cb28495d537cc5e67cb",
        "before_source_hash": "220bce1bedb0767341e541bbad678e7d8321b696b93e4f3ffdba2cf6f898a730",
        "contract_id": "CN4094452",
        "detected_at": "2025-07-22T22:46:23Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "9fd8b1b880ebb0da0ca8f50d7b4e95a0ec382c6b3ed13796939bb499cafa6295",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3685245.43",
        "notice_id": "CN4094452-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/2abdfbf3-e562-40ce-bba5-5589deb352f5",
        "old_value": "3442295.43",
        "percentage_change": "7.06",
        "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/CN4094452",
        "summary": "Reported contract value increased by $242,950.00 (+7.06%)."
      },
      {
        "absolute_change": "-165385.83",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-7d04ce8f06c130b98c771125dfb2f697",
        "after_source_hash": "51de28b27d458a03f1a1b0fcc4a363d88fd8179fc17fcbf30a543cb9991e7a0f",
        "before_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-8220431896e13f6e80ac0223b2e4e152",
        "before_source_hash": "a237ec6b3eeae3b7dda8afe979c473babd8e50bb55ab59bdf020b4914b7d3b13",
        "contract_id": "CN4094452",
        "detected_at": "2025-07-22T22:46:23Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "4a9fd7c5d001edbc053e345d538da2193df3f6f19c2e2047efd8a76a3679c22b",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3519859.60",
        "notice_id": "CN4094452-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/b46d8425-8eb1-4e78-a498-24346eaa481c",
        "old_value": "3685245.43",
        "percentage_change": "-4.49",
        "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/CN4094452",
        "summary": "Reported contract value decreased by $165,385.83 (-4.49%)."
      },
      {
        "absolute_change": null,
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-7d04ce8f06c130b98c771125dfb2f697",
        "after_source_hash": "51de28b27d458a03f1a1b0fcc4a363d88fd8179fc17fcbf30a543cb9991e7a0f",
        "before_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-8220431896e13f6e80ac0223b2e4e152",
        "before_source_hash": "a237ec6b3eeae3b7dda8afe979c473babd8e50bb55ab59bdf020b4914b7d3b13",
        "contract_id": "CN4094452",
        "detected_at": "2025-07-22T22:46:23Z",
        "direction": "changed",
        "duration_change_days": null,
        "event_id": "8ade3f2c74ff551271a73e5acb5aa9883fbd03f82b6df00afaae4034f3fe7adf",
        "field_label": "Supplier Name",
        "field_name": "supplier_name",
        "new_value": "BY GROUP PTY LTD",
        "notice_id": "CN4094452-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/b46d8425-8eb1-4e78-a498-24346eaa481c",
        "old_value": "BY GROUP",
        "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/CN4094452",
        "summary": "Supplier changed."
      }
    ],
    "evidence_path": "evidence/CN4094452.json",
    "latest_modified_at": "2025-07-22T22:46:23Z",
    "notice_id": "CN4094452-A3",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/b46d8425-8eb1-4e78-a498-24346eaa481c",
    "original_reported_value": "3407885.80",
    "procurement_method": "Limited tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4094452",
    "supplier_name": "BY GROUP PTY LTD",
    "title": "4600078708",
    "value_change": "111973.80",
    "value_change_percentage": "3.29",
    "versions": [
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4094452",
        "contract_start_date": "2024-08-30",
        "currency": "AUD",
        "description": "Construction Works",
        "notice_id": "CN4094452",
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        "procurement_method": "Limited tender",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4094452",
        "supplier_name": "BY GROUP",
        "title": "4600078708"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4094452",
        "contract_start_date": "2024-08-30",
        "currency": "AUD",
        "description": "Construction Works",
        "notice_id": "CN4094452-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/59a2d136-9d24-48a4-9dc4-e4c168731e92",
        "procurement_method": "Limited tender",
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        "source_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-15268d5662043cb28495d537cc5e67cb",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4094452",
        "supplier_name": "BY GROUP",
        "title": "4600078708"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4094452",
        "contract_start_date": "2024-08-30",
        "currency": "AUD",
        "description": "Construction Works",
        "notice_id": "CN4094452-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/2abdfbf3-e562-40ce-bba5-5589deb352f5",
        "procurement_method": "Limited tender",
        "reported_value": "3685245.43",
        "source_hash": "a237ec6b3eeae3b7dda8afe979c473babd8e50bb55ab59bdf020b4914b7d3b13",
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        "source_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-8220431896e13f6e80ac0223b2e4e152",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4094452",
        "supplier_name": "BY GROUP",
        "title": "4600078708"
      },
      {
        "agency_name": "Department of Defence",
        "category_code": "72100000",
        "contract_end_date": "2026-06-30",
        "contract_id": "CN4094452",
        "contract_start_date": "2024-08-30",
        "currency": "AUD",
        "description": "Construction Works",
        "notice_id": "CN4094452-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/b46d8425-8eb1-4e78-a498-24346eaa481c",
        "procurement_method": "Limited tender",
        "reported_value": "3519859.60",
        "source_hash": "51de28b27d458a03f1a1b0fcc4a363d88fd8179fc17fcbf30a543cb9991e7a0f",
        "source_modified_at": "2025-07-22T22:46:23Z",
        "source_release_id": "prod-3a4a8098c6f84a30adc3f6435000b679-7d04ce8f06c130b98c771125dfb2f697",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4094452",
        "supplier_name": "BY GROUP PTY LTD",
        "title": "4600078708"
      }
    ]
  },
  "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"
  }
}