HARLINGEN — So how much is that $20 bill worth?
Not as much as it used to be worth, that’s for sure.
But when it comes to currency, particularly virtual currency like bitcoin, the answer to that question is a bitcoin is worth what everybody agrees its worth.
Bitcoin is at the forefront of a wave of digital cryptocurrencies that are bought, sold and used on the Internet just like cash. Or if not cash, used as you would a debit or credit card to purchase a product.
The rationale for using bitcoin is that the number