Evidence & Assurance Engineering

A reviewer needs to know what produced a record, what it covers and how to check it. We engineer that evidence path around important system actions and the questions your team must answer.

Agree the evidence contract

We identify producers, actors, events, retention needs and known gaps. Each action has defined behavior when required evidence cannot be written: refuse it, or continue under an explicitly approved exception and response.

Connect capture to verification

Assay supports the evidence platform and Audit Chain is its published Drupal component. The implementation includes the selected integrity controls, key-custody model, failure alerts and export procedures. Independent anchoring, where required, needs its own defined trust boundary.

Test the claimed boundary

Acceptance captures an agreed event, detects a controlled alteration and exercises loss of signing or export. Key rotation must preserve the verification of retained history. You keep the coverage map, integrations, evidence and runbooks, including what an export can and cannot establish.