diff --git a/config/dispatcher/dispatcher.ex b/config/dispatcher/dispatcher.ex
index 26526ed..08d57ee 100644
--- a/config/dispatcher/dispatcher.ex
+++ b/config/dispatcher/dispatcher.ex
@@ -159,6 +159,9 @@ defmodule Dispatcher do
   match "/gender-codes/*path", %{ accept: [:json], layer: :api} do
     Proxy.forward conn, path, "http://cache/gender-codes/"
   end
+  match "/concepts/*path", %{ accept: [:json], layer: :api} do
+    Proxy.forward conn, path, "http://cache/concepts/"
+  end
 
   match "/minister-positions/*path", %{ accept: [:json], layer: :api} do
     Proxy.forward conn, path, "http://cache/minister-positions/"
diff --git a/config/migrations/2021110315263111111111111111-source-crab.sparql b/config/migrations/2021110315263111111111111111-source-crab.sparql
new file mode 100644
index 0000000..e715fd0
--- /dev/null
+++ b/config/migrations/2021110315263111111111111111-source-crab.sparql
@@ -0,0 +1,13 @@
+INSERT DATA {
+  GRAPH <http://mu.semte.ch/graphs/contacthub/141d9d6b-54af-4d17-b313-8d1c30bc3f5b/ChAdmin> {
+    <http://lblod.data.gift/concept-schemes/6f6f95d3-94e1-48a7-99ec-cdff57e6752d> a <http://www.w3.org/2004/02/skos/core#ConceptScheme>;    
+    <http://www.w3.org/2004/02/skos/core#prefLabel> "Data sources"@en, "Databronnen"@nl .
+    <http://lblod.data.gift/concepts/e59c97a9-4e95-4d65-9696-756de47fbc1f>  a <http://www.w3.org/2004/02/skos/core#Concept>;  
+    <http://www.w3.org/2004/02/skos/core#inScheme> <http://lblod.data.gift/concept-schemes/6f6f95d3-94e1-48a7-99ec-cdff57e6752d>;  
+    <http://www.w3.org/2004/02/skos/core#topConceptOf><http://lblod.data.gift/concept-schemes/6f6f95d3-94e1-48a7-99ec-cdff57e6752d>;  
+    <http://mu.semte.ch/vocabularies/core/uuid> "e59c97a9-4e95-4d65-9696-756de47fbc1f";  
+    <http://www.w3.org/2004/02/skos/core#prefLabel> "Centraal Referentieadressenbestand (CRAB)";  
+    <http://www.w3.org/2004/02/skos/core#altLabel> "CRAB".
+  }
+}
+
diff --git a/config/resources/domain.json b/config/resources/domain.json
index 02eb662..73cf2ef 100644
--- a/config/resources/domain.json
+++ b/config/resources/domain.json
@@ -611,6 +611,18 @@
         "full-address": {
           "type": "string",
           "predicate": "locn:fullAddress"
+        },
+        "address-register-uri": {
+          "type": "url",
+          "predicate": "adres:verwijstNaar"
+        }
+
+      },
+      "relationships": {
+        "source": {
+          "predicate": "dct:source",
+          "target": "concepts",
+          "cardinality": "one"
         }
       },
       "new-resource-base": "http://data.lblod.info/id/adressen/"
@@ -679,6 +691,20 @@
       },
       "new-resource-base": "http://lblod.data.gift/concepts/"
     },
+    "concepts": {
+      "class": "skos:Concept",
+      "attributes": {
+        "label": {
+          "type": "string",
+          "predicate": "skos:prefLabel"
+        },
+        "alt-label": {
+          "type": "string",
+          "predicate": "skos:altLabel"
+        }
+      },
+      "new-resource-base": "http://lblod.data.gift/concepts/"
+    },
     "organization-status-codes": {
       "class": "code:OrganisatieStatusCode",
       "attributes": {