Apologies if this has been asked before but can someone please clarify one point for me, is the currency for exchange always Ethereum?
In examples Ethereum is used and it is said that this will be deployed on the Ethereum network. If it is just Ethereum to start with will it expand to other networks later?
It will expand to other networks in the future. ETH will always be the reserve currency of BNT, and therefore BNT will always be liquidatable for ETH.