The only difference between Bitcoin No. ABC123 and $1 Bill No. L88793293J is that at the end of the day, the $1 bill physically exists and has a face value that is worth something. Fred could take the $1 bill and buy something off the $1 menu at McDonalds….By contrast, Bitcoin has no intrinsic value — it is just a number. The number may have an agreed value between two parties, but the number itself has no value.