01 - 
                Preheat the oven to 175°C (350°F). Combine graham cracker crumbs and melted butter in a bowl. Press the mixture into a springform pan to form the crust. Bake for 10 minutes, then let it cool completely.
              
              
              
                02 - 
                In a mixing bowl, beat the cream cheese until smooth. Gradually add the granulated sugar, mixing until well combined. Stir in the orange zest and juice.
              
              
              
                03 - 
                Melt the dark chocolate in a microwave or double boiler. Allow it to cool slightly, then fold it into the cream cheese mixture along with the whipped heavy cream.
              
              
              
                04 - 
                Pour the prepared filling into the cooled crust. Smooth the surface and refrigerate for at least 4 hours or overnight until set.
              
              
              
                05 - 
                Before serving, garnish the cheesecake with melted chocolate and fresh orange slices.