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At 08:38 AM 3/15/2002 -0500, Carl Fleischhauer wrote:
>  If METS was the metadata for an
>OAIS AIP, then there might be an argument that the "original" checksum (or
>equivalent) is parked there, with the object.  The job of the monitoring
>system would be to run comparisons and alert the owner when a change is
>noticed.  In addition, you would probably want the system to keep a log of
>when the comparisons were made.  Now, in such a system, is it useful or
>needful to know the date when the original checksum (or equivalent) was
>created?  I'd be curious to hear your thoughts.

Well, capturing the checksum for a digital object (OAIS Content
Information) in
the METS file makes perfect sense to me, even putting it in the file inventory
where it's easily machine processible makes sense. And you would use comparison
run dates to get the audit trail you speak of. So I just can't think of a
single reason
to care about the checksum's create date (as opposed to the digital object,
which
is useful). The log would use  So I guess I'd keep the checksum, maybe its
type,
but not its create date, and leave it at that. Does that make sense?

MacKenzie/


MacKenzie Smith
Associate Director for Technology
MIT Libraries
Building 14S-208
77 Massachusetts Avenue
Cambridge, MA  02139
(617)253-8184
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