Even if you have a 100% anonymous cryptocurrency, you are spending it on a site that has information about you and your activities on that site. If you are dealing with physical items, it has your address.
Agreed. However, if someone is leaking your physical address, they really don't need bitcoin addresses at all. They can just join on your address :)
This made me curious about the feasability of an anonymous postal service. One which you pay for with x-coin, with no identity attached, and you get physical deliveries at that address (placed into a box only you can access, maybe with some sort of private key).
With the security cams and all it might be hard, but probably not impossible if enough people are using it.
If you want "100% anonymity", you make sure that sites have no information about your meatspace identity. You certainly don't share your address. If you're leasing a VPS or whatever, you invent some persona for the account, and SSH via chained VPN services and Tor.
And connect that through a quadracopter mesh network to your local starbucks ISP. Also make sure you don't pick up your delivery until a month after it's shipped, just in case it's being watched.
The point is you can take as many precautions as you want, but you'll never attain 100% anonymity. You get diminishing returns after a while.
The main point is that having stuff delivered is the major risk. Using Tor through nested VPN chains is easy. I can't imagine "quadracopter mesh network". That would attract too much attention, I think.
Doesn't matter, nobody would know where you are, just the quadracopters. You could use dozens of drones if you want obscurity and to strengthen the mesh network. I was also joking.
Even if you have a 100% anonymous cryptocurrency, you are spending it on a site that has information about you and your activities on that site. If you are dealing with physical items, it has your address.