http://jqyzxhjk6psc6ul5jnfwloamhtyh7si74b4743k2qgpskwwxrzhsxmad.onion/docs/onion-services.html.en
Therefore, the service randomly picks
some relays, builds circuits to them, and asks them to act as introduction points by telling them its public key. Note
that in the following figures the green links are circuits rather
than direct connections. By using a full Tor circuit, it's hard for
anyone to associate an introduction point with the onion server's IP
address.