Hi Peter Roth,
It is possible to use the date property of the different page versions, it is also possible to access the date created
metafields of the news/blogs module items.
However, I am not sure I understand your request. As I see the situation, you need pages with some content on them (generic content, news items, blog posts) and for every content item, a date that cannot be changed.
This is already done for the News module. When a single news item is shown on a page, the publication date is also displayed. To protect it from falsification, you could disable the Rad Datepicker control, responsible for the publication date, in these two templates:
So when a news item is created or edited, the publication date cannot be set.
I hope this example is helpful. Could you please describe in more detail what exactly you need to achieve?
the Telerik team