Assessor directory
DSI 001 assessments are delivered by independent accredited assessors. This directory lists the assessors currently accredited to issue DSI 001 results.
What accreditation requires
An accredited assessor is an organisation authorised to conduct DSI 001 assessments and issue results against the published methodology. Accreditation rests on four requirements: demonstrated qualification in the methodology, documented adherence to it, independence from the organisation assessed, and accountability for the quality of the assessments produced, subject to a review mechanism that can withdraw accreditation. The requirements are set out in full on the Certification page.
Independence
The credibility of a DSI 001 result rests on the same principle as an independent audit: the assessor does not prepare the thing it assesses.
Two rules give that principle force. An accredited assessor must be independent of the organisation it assesses, and may not assess a system or scope for which it has provided readiness, remediation or implementation support. This is the prepare-or-assess wall. Where an assessor has any relationship that a reader would reasonably want to know about, that relationship is disclosed on every report the assessor issues, so the reader can weigh the result with the relationship in view rather than discover it later.
Self-assessment does not satisfy these requirements. An organisation that produces its own assessment has produced a self-assessment, not a certification.
Accredited assessors
Directory current as of [25 June 2026].
Attestra Pty Ltd
Attestra is accredited to conduct DSI 001 assessments and issue the Governance Benchmark Index, the dimensional profile, the multiplier analysis, the evidence-quality findings and, where required, the remediation roadmap that together constitute a DSI 001 result.
Attestra operates under the prepare-or-assess wall. It may not assess any system or scope for which it has provided substantive readiness, remediation or implementation support.
Attestra is connected to the wider Decision Standards ecosystem. That connection is disclosed on every report Attestra issues, and conflict decisions sit with an independent authority within Attestra's governance. The precise wording of this disclosure is being finalised with counsel.
Becoming an accredited assessor
Accreditation is open to organisations that can demonstrate the four requirements and operate under the independence rules. Adding independent, non-related accredited assessors is a priority for the standard, because a classification system is only as credible as the breadth and independence of the assessors who apply it. Organisations interested in accreditation can register an expression of interest through the Institute.