re #793

app/controllers/oer/endpoints.php

@@ -94,9 +94,6 @@ class Oer_EndpointsController extends StudipController
             $host_data = json_decode($host_data, true);
             if ($host_data) {
                 $host = OERHost::findOneByUrl($url);
-                if (!$host) {
-                    $host = OERHost::findOneByPublic_key($host_data['public_key']);
-                }
                 if (!$host) {
                     $host = new OERHost();
                 }