Preserved, asserted, reviewed, blocked and denied are explicit in the demonstrator.
EVIDENCE CONTINUITY INFRASTRUCTUREDIGITAL EVIDENCE
DIGITAL EVIDENCE
SHOULD NEVER LOSE
ITS CONTEXT.
Digital Witness keeps media, source context, uncertainty, authority decisions, review state and action history connected. An authorised reviewer can reconstruct what the system recorded, preserved, asserted, reviewed and decided.
WORKING DEMONSTRATOR07 LINKED STAGES01 GOVERNED TRANSACTION
CURRENT ARTEFACTBRANCH-LOCAL FOUNDRY DEMONSTRATORSYNTHETIC DATABASELINE / 05 AUG 2026
01ONE ITEM, TRACED
A FILE BECOMES A RECONSTRUCTABLE CASE.
Move through the four states below. Each one adds information that a file store cannot retain on its own.
CAPTURED MATERIALVIDEO-014REPRESENTED / SYNTHETIC
01Case
02Signal
03Observation
04Captured Item
05Attestation
06Integrity Review
07Governance Audit Event
THE FRAGMENT
A FILE APPEARS.
A video, image or message can be visible without carrying a reliable account of its source, surrounding context or later decisions.
MATERIALVIDEO-014
STATEVISIBLE
CONTEXTDISCONNECTED
DECISION HISTORYUNKNOWN
THE PROBLEM
THE FILE IS ONLY ONE PART OF THE EVIDENCE.
A file can be copied, forwarded, reviewed, restricted or separated from the circumstances that gave it meaning.
Digital Witness models the surrounding context, uncertainty, authority and action history so they remain connected to the material.
READ THE PRODUCT MODEL↗DIGITAL WITNESS / EVIDENCE CONTINUITYDW-PT-2026-0314SCROLL / 000%
DWWITNESS / GOVERN
THE DEEP WALKTHROUGH / SCROLL TO TRAVERSEFOLLOW ONE FRAGMENT
FOLLOW ONE FRAGMENT
THROUGH EVERY
GOVERNED DECISION.
Move from Case context to persisted audit provenance without silently converting represented state into external truth.
ARCHITECTUREOPERATIONAL MODELPRODUCT STORY
assembly
02WORKING PROOF
WATCH THE SYSTEM DISTINGUISH BLOCKED FROM DENIED.
The canonical synthetic transaction is deliberately small and inspectable: six attempts create five events because an invalid duplicate completion stops before state mutation.
CANONICAL TRANSACTIONTEST-RUN-20260805T1700Z
CASEDW-PT-2026-0314 / PROTECTED TRANSIT
ATTEMPT / 01
PERMITTED
AUDIT EVENT 01A1 · Attest
The actor is resolved server-side, the permitted edit is applied and a linked Governance Audit Event is generated.
06ATTEMPTED STEPS
05TRANSACTION AUDIT EVENTS
11CASE-WIDE AUDIT RECORDS
16TOTAL VERIFIED ONTOLOGY EVENTS
LONG-TERM THESIS
PREVENTION REQUIRES INSTITUTIONS TO REMEMBER WHAT THEY KNEW—AND WHY THEY ACTED.
Digital material is easy to create, copy, alter and distribute. The evidence system must preserve what was known, what remained uncertain and which decisions followed.
The proposed test measures hidden assumptions and unsupported inference.
Prevention outcomes are a thesis for external evaluation, not a claim of the current artefact.
03CURRENT POSITION
WHAT EXISTS. WHAT COMES NEXT.
The current artefact is a working demonstrator, not a finished police platform. The next value step is external validation and production hardening.
THE PROBLEM
Digital evidence is fragmented across media, platforms, people, institutions and decision logs.
WHAT EXISTS
A seven-stage ontology, four governed Actions and one verified end-to-end demonstrator transaction.
FIRST USE
A bounded evidence-continuity evaluation that can sit above or alongside existing forensic systems.
NEXT PROOF
External validation, stronger identity and authority controls, and production hardening.
04FIRST COMMERCIAL ENGAGEMENT
ONE WORKFLOW. ONE CONTROLLED TEST.
Map the workflow, expose hidden inference and test whether another reviewer can reconstruct the recorded path.
Discover
Map one existing investigation workflow.
Expose inference
Identify evidence states and authority decisions users currently infer.
Configure
Build a synthetic or sanitised comparative scenario.
Evaluate
Measure reconstruction errors, comprehension failures and task time.
Report
Deliver findings and define a restricted proof-of-concept proposal.
CAN AN UNFAMILIAR REVIEWER RECONSTRUCT THE PATH?
Evaluate the evidence-continuity model against a synthetic or sanitised workflow—without overstating what the demonstrator proves.