Provenance

Provenance is the record of where a piece of evidence came from and what has happened to it since.

For a document in a case file, provenance answers: which file did this text come from, who supplied it, when did it enter the file, and has anything changed since.

A checksum makes the last question answerable rather than assertable. If the sha256 of the file today matches the sha256 recorded when it arrived, the file has not been altered, and that is demonstrable rather than promised.

Legalnaut builds this out of your own case file. See the plans.