Roast Beef Hash and Eggs

Name: Roast Beef Hash and Eggs
Ingredients: 1 pound Yukon Gold potatoes, unpeeled, 3/4-inch diced; 2 teaspoons white wine vinegar; Kosher salt and freshly ground black pepper; 4 ounces thick-cut applewood smoked bacon, 1/2-inch diced; Good olive oil; 2 cups sliced yellow onion (2 onions); 12 ounces (1-inch-thick-sliced) cooked roast beef, cut in 1-inch cubes; 6 ounces Brussels sprouts, ends trimmed and thinly sliced; 1/2 teaspoon Sriracha; 1 tablespoon unsalted butter; 4 extra-large eggs; 4 (1/2-inch-thick) slices bread from a boule, toasted; 2 tablespoons minced chives, for serving