Several teams are submitting prototypes for review by a certain date. These will be viewed on their own servers. So I am looking for a utility that will prove that the prototype has not been changed since the deadline date. thanks.
If you have a file system mechanism in place that allows snapshots, problem solved. If not, you could taking a checksum or hash of the file at the deadline -- a fingerprint, in effect -- and then compare it to the file at the point of review.
On the whole, however, I don't think one can examine a file first at point C in time and prove it has not changed since point B in time. Depending on the file system and the ignorance of the local admin or programmer, you could at best infer, for many cases if not most, that the file had or hadn't been changed.
Make visible what, without you, might perhaps never have been seen. - Robert Bresson