> What does that mean that "private keys only have value when you hold them."
What he's saying is that people would sell their old private keys and an attacker could then use these to create a fake history of stakers- The existence of this attack is a valid criticism against POS, though one that can be easily prevented by just syncing to the network at regular intervals.
What he's saying is that people would sell their old private keys and an attacker could then use these to create a fake history of stakers- The existence of this attack is a valid criticism against POS, though one that can be easily prevented by just syncing to the network at regular intervals.