> Bitcoin et al are a Paypal killer, as in a low cost way to transmit currency or whatever, but you can do that in other less wasteful ways. You're talking abo

> Bitcoin et al are a Paypal killer, as in a low cost way to transmit currency or whatever, but you can do that in other less wasteful ways. You're talking about Proof of Stake or you imagine some other novel way of transferring currency digitally, without centralization and securely?