Death by Chocolate Bundt Cake

1 cup unsalted butter, softened
2 cups granulated sugar
4 large eggs
1 teaspoon vanilla extract
3/4 cup unsweetened cocoa powder
2 cups all-purpose flour
1 teaspoon baking powder
1 teaspoon baking soda
1/2 teaspoon salt
1 cup buttermilk
1 cup boiling water
1 cup semisweet chocolate chips
For the Glaze:

1 cup semisweet chocolate chips
1/2 cup heavy cream
1 tablespoon unsalted butter
1 teaspoon vanilla extract
For Topping:

1/2 cup semisweet chocolate chips
INSTRUCTIONS