How can I view the baseline on which the current view is based?
I could find information only on how to view the currently recommended baseline for a stream
You could describe the Stream in order to get the foundation baselines:
cleartool descr -fmt "%[found_bls]CXp" stream:myStream@\myPVob
(knowing that you can get the stream name of the current view with a simple "cleartool lsstream -cview" executed anywhere within your view).
cleartool lsstream -cview