Preheat oven to 450˚F. Pour flour, baking powder, salt, and baking soda in a mixing bowl and whisk together.
Add butter and evenly mix into dry ingredients until mixture is crumbly, use your fingers to help distribute bits of butter throughout the flour.
Add buttermilk and stir until dough just comes together.
Turn dough onto a clean, lightly floured surface and pat together into 11/2 inch thick square.
Cut square in middle and place one slab directly over other.
Roll into 1 1/2 inch thick square.
Cut down the middle in the other direction, then place one slab directly over other again and roll into 1 1/2 inch thick square.
Cut out 8 biscuits, only using a single up and down cut for each biscuit (so no sawing the dough), trimming any crumbling ends, if needed.
Transfer each biscuit to a parchment lined baking sheet spaced 1 inch apart, brush tops with melted butter and refrigerate for 10 minutes.
Remove from refrigerator and bake biscuits for 13 to 15 minutes or until golden brown . Remove biscuits from oven and cool until warm. Serve.