Heat coconut oil in a large pot over medium-low heat. Add onions, ginger, garlic, curry powder and salt. Stir occasionally, cook until fragrant and onions soften and become translucent. Add carrots and broth, simmer for 10-15 minutes until carrots are soft enough to be easily pierced with a fork or knife. Add all ingredients from pot to a high-speed blender and blend until smooth. Add additional salt to taste.