Evidence should remain traceable all the way to the decision.
Preserve provenance, separate assertion from evidence and show what can actually be verified.
Make the evidential position visible.
ORVIA avoids simplistic truth scoring. Evidence states describe status and uncertainty; they do not assign guilt, culpability or personal risk scores.
Provenance
Show where material came from, when it was obtained and how it has been handled.
Source control
Separate originals, derivatives, summaries and assertions rather than flattening them into one narrative.
Versioning
Preserve change history where material evolves over time.
Chronology
Place events into a traceable sequence linked back to supporting material.
Corroboration
Compare material across independent sources before relying on it.
Contradictions
Keep conflicts visible instead of smoothing them out.
Missing evidence
Record what should exist, what has not been obtained and why the gap matters.
Verification
Record what was verified, against which evidence, by whom and at what stage.