diff --git a/swh/web/ui/service.py b/swh/web/ui/service.py
index d89cb545..558a3c18 100755
--- a/swh/web/ui/service.py
+++ b/swh/web/ui/service.py
@@ -1,43 +1,75 @@
 # Copyright (C) 2015  The Software Heritage developers
 # See the AUTHORS file at the top-level directory of this distribution
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
 
 from swh.web.ui import main
 from swh.web.ui import query
 
 
 def lookup_hash(q):
     """Given a string query q of one hash, lookup its hash to the backend.
 
     Args:
          query, hash as a string (sha1, sha256, etc...)
 
     Returns:
          a string message (found, not found or a potential error explanation)
 
     Raises:
          OSError (no route to host), etc... Network issues in general
     """
     hash = query.categorize_hash(q)
     if hash != {}:
         present = main.storage().content_exist(hash)
         return 'Found!' if present else 'Not Found'
     return """This is not a hash.
 Hint: hexadecimal string with length either 20 (sha1) or 32 (sha256)."""
 
 
+def _origin_seen(hash, data):
+    """Given an origin, compute a message string with the right information.
+
+    Args:
+        origin: a dictionary with keys:
+          - origin: a dictionary with type and url keys
+          - occurrence: a dictionary with a validity range
+
+    Returns:
+        message as a string
+
+    """
+    if data is None:
+        return 'Content with hash %s is unknown as of now.' % hash
+
+    origin_type = data['origin_type']
+    origin_url = data['origin_url']
+    revision = data['revision']
+    branch = data['branch']
+    path = data['path']
+    print("data:", data)
+    return """The content with hash %s has been seen on origin with type '%s'
+at url '%s'. The revision was identified at '%s' on branch '%s'.
+The file's path referenced was '%s'.""" % (hash,
+                                           origin_type,
+                                           origin_url,
+                                           revision,
+                                           branch,
+                                           path)
+
+
 def lookup_hash_origin(hash):
     """Given a hash, return the origin of such content if any is found.
 
     Args:
         hash: key/value dictionary
 
     Returns:
         The origin for such hash if it's found.
 
     Raises:
         OSError (no route to host), etc... Network issues in general
     """
-    return "origin is 'master' from 'date'"
+    data = main.storage().content_find_occurrence(hash)
+    return _origin_seen(hash, data)
diff --git a/swh/web/ui/templates/content.html b/swh/web/ui/templates/content.html
index 4f127cb7..8d7c4401 100644
--- a/swh/web/ui/templates/content.html
+++ b/swh/web/ui/templates/content.html
@@ -1,7 +1,6 @@
 {% extends "layout.html" %}
 {% block body %}
-
 <p>
-{{ message | safe }}
+{{ message }}
 </p>
 {% endblock %}