What Human Rights?

[The Barefoot Bum]

In the sense of the OP's philosophical question, inalienability refers to a state that naturally follows from one's essential being i.e. it cannot be considered something apart from what it means to be human.

This is not, I think, quite on the right track. We can still socially construct a legal right that "naturally follows from one's essential being." Such rights may be "inalienable" in this sense, but they still would not "exist" in the sense of the OP. Most of the UN Declaration of Human Rights (which are, as written, legal rights) seem to have this character.