Suppose you have a fair coin. Then tossing it has two possible outcomes, both equally likely.
Before you flip the coin, these possibilities are undecided. These could be called future possibilities.
If you flip the coin without looking at the result, then the outcome is decided, but unknown. There are still two possibilities for the outcome. These could be called present possibilities.
I'm looking for a word or short phrase to distinguish between these two different uses of the word possibility.
I don't think present possibility and future possibility clearly describe this usage. Decided possibility seems like an oxymoron, and undecided possibility seems redundant.