Resumen
This essay makes the case that current debates about the ?moneyness? of Bitcoin and other cryptocurrencies are occurring at the incorrect scale. Rather than being some form of trans-national digital money to be used alongside or compete with national fiat currencies, I argue that, instead, each cryptocurrency represents its own self-contained ?money-world?. Put differently, a cryptocurrency is the uniquely specified unit of account and medium of exchange within the socio-technical bounds of its own blockchain. This new perspective can open new lines of intellectual dialogue and inform better policy choices for regulating cryptocurrencies.