Unless I'm missing something by signing a digital signature, you're not proving ownership, you're proving identity, a somewhat different concept. If I think a

Unless I'm missing something by signing a digital signature, you're not proving ownership, you're proving identity, a somewhat different concept. If I think a little deeper, it is true, you're proving identity by proving ownership of a private key, but the goal of crypto is proving ownership based on previous peer-agreed ownership by proving identity by proving ownership of a private key. Or maybe I'm just full of shit, but It intuitively feels different than just signing something.