Is Melicha (salting meat) from the Torah or a rabbinic law?

There is a dispute that begins in the Talmud and runs through later Poskim whether cooked blood is forbidden from the Torah or from rabbinic law. According to some opinions, the prohibition is rabbinic but we treat cases of doubt - strictly, because of a "Chazaka"- an established state of being forbidden (before the blood was cooked). This would make the requirement of salting the meat before cooking the meat rabbinic, but as mentioned, there are variant opinions.