As for crypto currencies, they seem irrelevant to this topic.
I give you $20, and I go to jail if I don't mark down the serial, and report it. Or, if I cannot account for where serial $x went to, after it was given to me.
All stores, etc have to do the same.
People would freak out if told to do this.
Yet this is precisely what is happening with debit/credit cards worldwide. This level of tracking is slowly begin kicked on everywhere.
For example, by law, the DHS in the US has access to all credit(and effectively debit, which uses the same clearing process) transactions.
The US just rolled over after 9/11, completely bizarre.
I literally don't get people.
Yeah, the floodgates of information into surveillance, they are just completely open and people are way past caring. It's just too much to understand. And like Snowden says, of all that "metadata", you don't need much of it to do the meaningful tracking you need.