"“Every restaurant, every barber shop, every bank” will be required to accept bitcoin, he said on Tuesday night as legislators debated his bill. He said the use of bitcoin would increase financial inclusion, as 70% of Salvadorans don’t have access to traditional financial services."

"The legislation passed by El Salvador is unusual because legal tender status generally just determines whether taxes and other debts can be paid through a specific instrument, rather than compel businesses to accept a specific form of payment"

could this be a portent for the end of the USD as the world's reserve currency?

"Other poor nations have talked about using cryptocurrencies as a way to free themselves from reliance on the U.S. dollar, the dominant currency in international financial transactions."