Could Could Have Been?

"Could be" is used for potential future events: If I invest in the right stock, I could be rich! "Could have been" is used for potential past events, or ongoing events up to the present moment: If I had invested in the right stocks back in the 1980's, I could have been rich by now.

Is could have been correct?

Could +have -indicates a possible past action which was not done by the subject eg: she could have gone to the party but she was not interested. 'been' is the perfect tense of 'am/is/are'.

Could have been means?

Could have means that something was possible in the past, but it did not happen. ... Native speakers often do not pronounce their past tense modals as clearly as Tiffany. Could have been usually gets contracted to could've been or even coulda' been.