Public statements from the colleges. Here's one from
Occidental: http://www.oxy.edu/x7992.xml
Note that he attended as a full-time for two years. Non-matriculated can't do that.
Here's another one from Columbia:
http://www.college.columbia.edu/news/barack-obama-83-becomes-first-college-alumnus-to-win-presidency
This is what you call official records? Try & use it as concrete prima facia evidence in a court of law & see how far you get. If the article as it says it is, then why not just release the official records as Bush & McCain did?
Amazing....
I note how people will rarely cut and paste links into their browsers and now you are making it necessary for them to do it to read what you want to show them.