What happens if we do not associate any account with our bitcoin address?
When I transfer funds from the bitcoin exchange sites to my bank account, my identity is revealed.
But what happens if I make all my purchases online without making a connection with my personal account?
In short, I wonder if the bitcoin protocol itself is anonymous? Is our IP address logged?
The most practical method to stay completely anonymous is to use a mixer service which you could set receiving addresses and even set delay time in sending orders, and no matter from where you are sending your bitcoins to the mixer's address, your IP is no longer an issue.
IP addresses of the nodes are logged anyone relaying transactions but they might using TOR so you can't really tell if it's their real IP.
Mixing bitcoin is like using burner phones.