A loan could be delivered and repaid in Bitcoin... but have the calculation of its interest/principal be in some other unit. An example is the Chilean "Unidad

A loan could be delivered and repaid in Bitcoin... but have the calculation of its interest/principal be in some other unit. An example is the Chilean "Unidad de Fomento", which does not circulate, and varies against the peso which does circulate. But the Unidad de Fomento is used for loan terms. http://en.wikipedia.org/wiki/Unidad_de_Fomento http://en.wikipedia.org/wiki/Unidad_de_Fomento A company called BTCjam currently arranges "linked loans" that are serviced via Bitcoin, but indexed to USD. https://btcjam.com/faq/loan_types https://btcjam.com/faq/loan_types It turns out that the traditional money bundle (medium of exchange, unit of account, store of value) can be unpacked somewhat.