Hi, the black spot looks like a scar. Plants possess an enzyme that creates "scabs" in an effort to protect an injured place. This is what it looks like. The white spot. Can it be scraped off? The only thing I can think of is a potential mealybug. I am not saying that is what it is, but you can rule it out by treating the area with neem oil, or some isopropyl alcohol. Just use a Q-tip, and pat the top of it and see if that helps.
Orchids will get nicks and bungs over time. They can live many years but the individual leaves or parts of the orchid (roots "stems" called Pseudobulbs in many kinds of orchid) have a natural growth/die-off cycle , and so they will have their fair share of injury.
