[brighton36]

> One you remove the need for PoW they are barely any more inefficient than a master-master DB with the combination of immutability and known entry ordering.

Once you remove the PoW - it's no longer a blockchain. That is what a blockchain is. If you believe that blockchain's don't require PoW - then off the bat you have major security problems. But in addition to that - your definition of blockchains would mean that we've been using blockchains since the 80's

[sanswork]

So you don't consider PoS systems blockchains?

PoW literally has nothing to do with what the blockchain is only in deciding who can add the next block and there are a lot of ways to do that when you know all the participants.