&gt; But the legally relevant technical question is not whether someone can track the packet from the source to the destination. It&#x27;s whether the user&#x27;s IP address has been revealed to the public. That&#x27;s necessarily the case even when communicating over Tor; that&#x27;s just how the Internet <i>works</i>.<p>But you&#x27;re only getting there with some kind of unusual globally omniscient consolidated definition of &quot;the user&#x27;s IP address&quot; where because one member of the public knows the user but not the IP address (exit node) and a different member of the public knows the IP address but not the user (entry node) then &quot;the public&quot; knows the user&#x27;s IP address, even though under expected operation there is no member of the public that actually knows the user&#x27;s IP address.<p>By this logic &quot;the public&quot; knows the identity of every pseudonymous author because some members of the public know the pseudonymous work and different members of the public know the author in person, even if not one member of the public actually knows who writes under that pseudonym.