Frontier 2026 Expert Evidence Provenance Orchestrator for Perth Litigation Lawyers: Track Every Model, Dataset and Human Touch Behind an Expert Report

Your expert hands you a 90-page report two weeks out from hearing. Three appendices were drafted with model assistance, two datasets were cleaned through a pipeline the expert can no longer fully describe, and a junior analyst regenerated a chart “to tidy it up” the night before sign-off. The Administrative Review Tribunal expects the expert — and you — to be able to explain, on the record, who and what contributed to each opinion. The Frontier 2026 Expert Evidence Provenance Orchestrator is built so that when the question comes, the answer is already documented.

The problem

Expert evidence in 2026 rarely comes from a single brain and a single spreadsheet. Reports lean on instrument outputs, statistical packages, retrieval tools, and increasingly on language models used for drafting, summarisation, or code generation. The ART Expert Evidence Practice Direction and related guidance expect experts to disclose the basis of their opinions, the materials relied on, and any assistance received. When a model contributes to analysis or drafting and that contribution is not recorded at the time, reconstructing provenance under cross-examination is slow, embarrassing, and sometimes impossible. The risk surface for a Perth litigation lawyer running an ART matter — or a Federal Court matter that incorporates expert evidence first prepared for the Tribunal — is attribution failure: an opinion the expert can no longer trace cleanly to its inputs.

The Federal Court’s General Practice Note on the use of generative AI (GPN-AI) reinforces the same expectation in court proceedings: practitioners are responsible for the accuracy of what they file, and AI involvement in preparing court materials may need to be disclosed. An expert report that walks through both forums needs provenance that survives both.

What the Frontier 2026 Expert Evidence Provenance Orchestrator does

The orchestrator captures, structures, and verifies the chain of contributions behind an expert report so that every opinion can be traced to its inputs — datasets, instrument outputs, code, model calls, human edits — at the paragraph level. It is the next-generation provenance layer for the 2026+ regulatory landscape where expert evidence is routinely model-assisted and tribunals are explicitly asking how.

The deliverable is a structured provenance record that sits alongside the expert report, exportable in a form suitable for annexure or for production on request:

• Per-section attribution: which paragraphs were drafted, edited, or generated by which contributor (human or system)
• Dataset lineage: source, retrieval date, cleaning steps, and hash for each input dataset
• Model interaction log: prompts, model identifiers, timestamps, and any outputs incorporated into the report
• Human sign-off record: which expert reviewed and accepted each model-assisted passage
• A plain-English provenance statement the expert can append to the report or rely on in conference

How it works

1. Intake. Your expert connects their working environment — document drafts, data folders, and any AI tools they use — to the orchestrator at the start of the engagement. Existing materials are baselined.
2. Continuous capture. As the expert and their team work, the orchestrator records contributions: edits, dataset reads, model prompts and responses, code execution. Capture runs in the background.
3. Paragraph-level mapping. When the report is drafted, each paragraph is mapped to the contributions that produced it. Model-assisted passages are flagged for explicit expert review.
4. Verification pass. Before service, citations within the report are checked against an Australian authority registry (the same verifier behind RuleCheck, our open-source citation tool at github.com/andrefabre/rulecheck), and the provenance record is reconciled against the final text.
5. Export. A provenance annexure and a machine-readable record are produced for service alongside the report, with a redacted version suitable for production to the Tribunal if directed.

Why this matters in Perth

Perth litigation teams running matters before the Administrative Review Tribunal — migration, NDIS, veterans’ entitlements, taxation, and Commonwealth workers’ compensation reviews — work with experts whose reports often draw on Commonwealth datasets and model-assisted analysis. The Tribunal’s expert evidence guidance asks experts to be transparent about the basis of their opinions and the assistance they received in preparing them. Where the same expert report is later relied on in the Federal Court (for example, on appeal from the ART), GPN-AI and the Australian Solicitors’ Conduct Rules — particularly Rule 19 on candour to the court — apply on top. For a WA practitioner briefing experts who may be based interstate or overseas and who use different toolchains, having a single provenance record that travels with the report removes a class of risk that is otherwise discovered late.

Sources

• Administrative Review Tribunal — Practice directions and other guidance: https://www.art.gov.au/help-and-resources/professionals-and-practitioners/practice-directions-and-other-guidance
• Federal Court of Australia — Use of Generative Artificial Intelligence Practice Note (GPN-AI): https://www.fedcourt.gov.au/law-and-practice/practice-documents/practice-notes/gpn-ai
• Law Council of Australia — Australian Solicitors’ Conduct Rules: https://lawcouncil.au/policy-agenda/regulation-of-the-profession-and-ethics/australian-solicitors-conduct-rules
• RuleCheck (open-source citation verifier by Exegesis): https://github.com/andrefabre/rulecheck

Join the waitlist

The Frontier 2026 Expert Evidence Provenance Orchestrator is a T3 service shape in scoping. We are working with a small number of Perth litigation teams to shape the intake workflow, the expert-side tooling, and the export format the Tribunal and the Court will actually find useful. If you brief experts in ART or Federal Court matters and want provenance handled as part of the engagement rather than reconstructed in the week before hearing, join the waitlist.

Join the waitlist — Frontier 2026 Expert Evidence Provenance Orchestrator for Perth litigation teams