Decadent Chocolate Crepe Cake

Name: Decadent Chocolate Crepe Cake
Ingredients: 3/4 cup unsalted butter (cubed); 8 oz bittersweet chocolate (coarsely chopped); 6 large eggs; 2-1/2 cups whole milk; 3 tsp vanilla extract; 1-1/2 cups all-purpose flour; 1/3 cup sugar; 1/8 tsp salt; 8 oz white baking chocolate (chopped); 1/2 cup heavy whipping cream; 2-1/4 cups sugar; 1 tsp cream of tartar; 8 large egg whites; 2 cups unsalted butter (softened); 2 tsp vanilla extract; 6 oz semisweet chocolate (chopped); 3/4 cup heavy whipping cream; 2-1/2 tsp corn syrup