Melt the chocolate in the microwave and let cool.
Beat cream cheese.
Add sugar and cocoa until smooth.
Add eggs one at a time on low.
Scrape down the sides of the bowl as needed.
Pour in the cooled, melted chocolate on low to blend.
Pour this over the crust and spread evenly.
Bake about 70 minutes.
Cool 5 minutes.
Drag a thin knife around the sides and chill in fridge over night.