{
  "contract": {
    "agency_name": "CSIRO",
    "amendment_count": 6,
    "category_code": "71123001",
    "contract_end_date": "2026-10-11",
    "contract_id": "CN4009389",
    "contract_start_date": "2023-10-12",
    "currency": "AUD",
    "current_reported_value": "2887998.17",
    "description": "Hydraulic and reticulated Gas Services WA",
    "events": [
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        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-d82712b55b173abc91f35663ecd7b506",
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        "contract_id": "CN4009389",
        "detected_at": "2025-07-25T04:39:38Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "13fb239b6bb784a345fbe1c0aa08f7352b87820ed72960ab22a25e588f1f3a9d",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3081008.21",
        "notice_id": "CN4009389-A1",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/1e7150cf-4a6b-41d5-95e4-962fb631b4b3",
        "old_value": "1728770.00",
        "percentage_change": "78.22",
        "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/CN4009389",
        "summary": "Reported contract value increased by $1,352,238.21 (+78.22%)."
      },
      {
        "absolute_change": "7.00",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-ec91d068d8dd306081b4927c4be4825c",
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        "contract_id": "CN4009389",
        "detected_at": "2025-07-25T04:39:38Z",
        "direction": "increase",
        "duration_change_days": null,
        "event_id": "d8123ec3d033a8dc924ed2c2eaf96894df54c6264de0e4fa8812905946467cbc",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3081015.21",
        "notice_id": "CN4009389-A2",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/e30b2e21-e6a2-4079-92a5-baabd14b525c",
        "old_value": "3081008.21",
        "percentage_change": "0.00",
        "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/CN4009389",
        "summary": "Reported contract value increased by $7.00 (+0.00%)."
      },
      {
        "absolute_change": "-30692.09",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-bb8f16a189ff3752a15a96b2e613c8e2",
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        "contract_id": "CN4009389",
        "detected_at": "2025-07-25T04:39:38Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "1e89c4926b9c75f62b125a74cfeefd8440260c142d658d2e0636dce6917d4300",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "3050323.12",
        "notice_id": "CN4009389-A3",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/090b0a51-e326-440c-bf1f-26564ed9da2e",
        "old_value": "3081015.21",
        "percentage_change": "-1.00",
        "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/CN4009389",
        "summary": "Reported contract value decreased by $30,692.09 (-1.00%)."
      },
      {
        "absolute_change": "-10525.41",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-980bf87a67fc34538edd175684647576",
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        "contract_id": "CN4009389",
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        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "104fd7acc95e3c8808f23a08e45209aa9935a855246adc32ed3796b207c8b50b",
        "field_label": "Reported Value",
        "field_name": "reported_value",
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        "notice_id": "CN4009389-A4",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/7ed178f5-fa65-4c42-9669-e35b62d6489c",
        "old_value": "3050323.12",
        "percentage_change": "-0.35",
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        "source_publisher": "Australian Government Department of Finance",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "summary": "Reported contract value decreased by $10,525.41 (-0.35%)."
      },
      {
        "absolute_change": "-51555.48",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-697bcf6a71143d64aa11e12b4ad6a6ff",
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        "contract_id": "CN4009389",
        "detected_at": "2025-07-25T04:39:38Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "6c7675eb5ab7614b76447d0200e5c69ad3a2c1f1baae6f18c7bc79d37a37c861",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "2988242.23",
        "notice_id": "CN4009389-A5",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/06184098-7ec8-4996-958c-78d7eb333c55",
        "old_value": "3039797.71",
        "percentage_change": "-1.70",
        "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/CN4009389",
        "summary": "Reported contract value decreased by $51,555.48 (-1.70%)."
      },
      {
        "absolute_change": "-100244.06",
        "adaptation_notice": "Adapted and normalised by ContractDelta AU from AusTender Contract Notice data.",
        "after_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-e65ab613ee4131808a132760d5dc9d9c",
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        "contract_id": "CN4009389",
        "detected_at": "2025-07-25T04:39:38Z",
        "direction": "decrease",
        "duration_change_days": null,
        "event_id": "fa38d56d7f9df1d49aab83ced0a68297e9a05158dae6a464b5ba50802b6f54b0",
        "field_label": "Reported Value",
        "field_name": "reported_value",
        "new_value": "2887998.17",
        "notice_id": "CN4009389-A6",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/c7bd22ec-8b9f-49b0-9251-b634928e0378",
        "old_value": "2988242.23",
        "percentage_change": "-3.35",
        "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/CN4009389",
        "summary": "Reported contract value decreased by $100,244.06 (-3.35%)."
      }
    ],
    "evidence_path": "evidence/CN4009389.json",
    "latest_modified_at": "2025-07-25T04:39:38Z",
    "notice_id": "CN4009389-A6",
    "official_record_url": "https://www.tenders.gov.au/Cn/Show/c7bd22ec-8b9f-49b0-9251-b634928e0378",
    "original_reported_value": "1728770.00",
    "procurement_method": "Open tender",
    "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
    "supplier_name": "On Tap Services Pty LTd",
    "title": "CW9156",
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    "value_change_percentage": "67.06",
    "versions": [
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "supplier_name": "On Tap Services Pty LTd",
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      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "supplier_name": "On Tap Services Pty LTd",
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      {
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "supplier_name": "On Tap Services Pty LTd",
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      {
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        "currency": "AUD",
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        "notice_id": "CN4009389-A4",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "supplier_name": "On Tap Services Pty LTd",
        "title": "CW9156"
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      {
        "agency_name": "CSIRO",
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        "currency": "AUD",
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        "notice_id": "CN4009389-A5",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/06184098-7ec8-4996-958c-78d7eb333c55",
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        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "supplier_name": "On Tap Services Pty LTd",
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      {
        "agency_name": "CSIRO",
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        "currency": "AUD",
        "description": "Hydraulic and reticulated Gas Services WA",
        "notice_id": "CN4009389-A6",
        "official_record_url": "https://www.tenders.gov.au/Cn/Show/c7bd22ec-8b9f-49b0-9251-b634928e0378",
        "procurement_method": "Open tender",
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        "source_release_id": "prod-d7b1a65ea29046eaa907e3f02794e2de-e65ab613ee4131808a132760d5dc9d9c",
        "source_url": "https://api.tenders.gov.au/ocds/findById/CN4009389",
        "supplier_name": "On Tap Services Pty LTd",
        "title": "CW9156"
      }
    ]
  },
  "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"
  }
}