{
  "schema_version": 1,
  "schema_url": "/data/uses/schema-v1.json",
  "updated_at": "2026-07-30T08:00:00+10:00",
  "collection": {
    "title": "Research and analysis using .auDO",
    "description": "Substantive published work that cites, interprets, visualises or otherwise uses public .auDO observations."
  },
  "items": [
    {
      "id": "australian-organisations-infrastructure-fingerprints",
      "type": "analysis",
      "title": "Australian organisations leave different infrastructure fingerprints",
      "summary": "A cohort analysis of visible DNS, public mail routing and registrar dependencies across selected domains in the fixed .auDO panel.",
      "published_at": "2026-07-29",
      "included_at": "2026-07-30",
      "canonical_url": "https://bryanchetcuti.com/writing/australian-organisations-infrastructure-fingerprints/",
      "language": "en-AU",
      "authors": [
        {
          "name": "Bryan Chetcuti",
          "url": "https://bryanchetcuti.com/"
        }
      ],
      "publisher": {
        "name": "Bryan Chetcuti",
        "url": "https://bryanchetcuti.com/",
        "domain": "bryanchetcuti.com"
      },
      "relationship": "founder_authored_external",
      "disclosure": "Authored by .auDO founder Bryan Chetcuti and published on his independent writing site.",
      "audo_basis": {
        "observation_date": "2026-07-29",
        "observation_window": null,
        "panel": "fixed_100_domain_panel",
        "evidence_note": "Uses the latest canonical provider matches for the fixed 100-domain panel as at 29 July 2026.",
        "surfaces": [
          "dns_provider",
          "email_provider",
          "registrar",
          "cohorts"
        ],
        "references": [
          {
            "label": "Dated observation report",
            "url": "/reports/view.html?date=2026-07-29"
          },
          {
            "label": "Observation panel",
            "url": "/panel/"
          },
          {
            "label": "Observed cohorts",
            "url": "/cohorts/"
          },
          {
            "label": "DNS provider state",
            "url": "/state/dns-providers/"
          },
          {
            "label": "Email provider state",
            "url": "/state/email-providers/"
          },
          {
            "label": "Registrar state",
            "url": "/state/registrars/"
          },
          {
            "label": "Methodology",
            "url": "/notes/"
          }
        ]
      },
      "tags": [
        "Infrastructure",
        "Provider concentration",
        "Cohorts",
        "Digital trust"
      ],
      "status": "available",
      "last_verified_at": "2026-07-30"
    }
  ]
}