Preheat oven to 450°F (230°C). Line a baking sheet with parchment paper.

In a large bowl, whisk together flour, baking powder, baking soda, and salt.

Cut the cold butter into small cubes. Using a pastry cutter or your fingers, work the butter into the flour mixture until it resembles coarse crumbs.

Make a well in the center and pour in the cold buttermilk. Stir gently until just combined (do not overmix).

Turn the dough onto a lightly floured surface. Gently pat into a 1-inch thick rectangle. Fold the dough over itself 3-4 times to create layers.

Use a biscuit cutter or glass to cut out biscuits. Place on prepared baking sheet, close but not touching.

Bake for 10-12 minutes until golden brown. Brush with melted butter if desired.