[SchemaLoad]

Somewhat related, but I suggest having both the record updated at, and some kind of "user editing updated at". As I've encountered issues where some data migration ends up touching records and bumping the updated at, which shocks users since they see the UI reshuffle and think they have been hacked when they see the records updated at a time they didn't update them.

[XorNot]

I mean this is what audit logs are for I'd say: generally speaking you want to know what was changed, by who and why.

So really you probably just want a reference to the tip of the audit log chain.