Regression theorem
The Regression Theorem, first proposed by Ludwig von Mises in his 1912 book The Theory of Money and Credit, states that the value of money can be traced back to the goods and services it obtains. In other words, money is backed by some commodity that has intrinsic value.
Recently, there has been a debate about applying Regression Theorem to Cryptocurrency such as Bitcoin. Since Bitcoin is not backed by any commodity, it appears to fail the definition of a currency according to the Regression Theorem. Others hold the view that Bitcoin does fit the definition as it is at once a payment system and money, with the source of value being the payment system.
