Irish Brown Bread with Smoked Salmon

Name: Irish Brown Bread with Smoked Salmon
Ingredients: 1 cup unbleached all-purpose flour plus additional; 1 cup whole-wheat flour; 1/3 cup old-fashioned rolled oats; 1/4 cup toasted wheat germ; 1 1/2 teaspoons baking soda; 1 teaspoon salt; 1 teaspoon caraway seeds; 3/4 stick (6 tablespoons) cold unsalted butter, cut into bits, plus 1 stick (1/2cup) unsalted butter, softened; 1 cup plus 2 tablespoons well-shaken buttermilk; 1/2 pound thinly sliced smoked salmon; 1 bunch fresh chives, trimmed