A timestamped, attributable record of text being built incrementally, with diffs showing exactly what changed and when.
What it does not
It proves a commit was made, not who typed it, unless commits are cryptographically signed.
How to get it
git log with the date and author fields, and for signed commits, the verification output. Summarise it for non-technical readers rather than linking to a repository.
How long it survives
As long as the repository exists. Commit hashes make rewriting history detectable.
Why it matters
For documentation, technical writing and research code, this is the closest thing to an unimpeachable process record that exists.
Check the evidence in your own document
The analyzer reads the process record inside a .docx and reports each signal separately, with its limits stated.