I'm curious and I can't work out how to phrase this as a Google search, so I'm hoping someone smarter than me can answer this: At the moment we refer to BTC as

I'm curious and I can't work out how to phrase this as a Google search, so I'm hoping someone smarter than me can answer this: At the moment we refer to BTC as being worth $xUSD, but without another currency to compare it to, is it worth anything? Or is it just not designed to be used in isolation?