> Who determine which blockchain is the "legitimate" one? You! And me! And the rest of the people who chooses to use one. Maybe not you in particular, but the

> Who determine which blockchain is the "legitimate" one? You! And me! And the rest of the people who chooses to use one. Maybe not you in particular, but the people. Bitcoin is only as legitimate as the people having/wanting Bitcoin makes it. Which, by judging how much it's currently is worth, seems very legitimate.