diff --git a/src/main/java/reputation/node/models/Node.java b/src/main/java/reputation/node/models/Node.java
index c830760..0e5e946 100644
--- a/src/main/java/reputation/node/models/Node.java
+++ b/src/main/java/reputation/node/models/Node.java
@@ -84,7 +84,7 @@ public class Node implements NodeTypeService, ILedgerSubscriber {
   private NodeCredibility nodeCredibility;
   private CsvWriterService csvWriter;
   private String credibilityHeader;
-  private String[] csvData = new String[9];
+  private String[] csvData = new String[10];
   private long startedExperiment;
   private boolean flagStartedExperiment = true;
   private static final Logger logger = Logger.getLogger(Node.class.getName());
@@ -635,6 +635,9 @@ private void requestAndEvaluateNodeService(
       logger.info("EVALUATION VALUE");
       logger.info(String.valueOf(evaluationValue));
 
+      /* Salvando o ID do prestador do serviço. */
+      this.csvData[9] = nodeId;
+
       this.nodeType.getNode()
         .evaluateServiceProvider(
           nodeId,
diff --git a/src/main/resources/OSGI-INF/blueprint/blueprint.xml b/src/main/resources/OSGI-INF/blueprint/blueprint.xml
index e9caa83..10305fc 100644
--- a/src/main/resources/OSGI-INF/blueprint/blueprint.xml
+++ b/src/main/resources/OSGI-INF/blueprint/blueprint.xml
@@ -74,7 +74,7 @@
             <cm:property name="useCredibility" value="true" />
             <cm:property name="useLatestCredibility" value="true" />
             <cm:property name="debugModeValue" value="true" />
-            <cm:property name="credibilityHeader" value="Node_ID,Type,C(n),R,Tr(n),Cr_old(n),Cr_new(n),Started_experiment_time,wrote_file_time" />
+            <cm:property name="credibilityHeader" value="Node_ID,Type,C(n),R,Tr(n),Cr_old(n),Cr_new(n),Started_experiment_time,wrote_file_time,Node_provider_ID" />
         </cm:default-properties>
     </cm:property-placeholder>
 </blueprint>
\ No newline at end of file
diff --git a/src/main/resources/br.uefs.larsid.soft_iot.reputation_node.cfg b/src/main/resources/br.uefs.larsid.soft_iot.reputation_node.cfg
index e95d2b6..65ec7ca 100644
--- a/src/main/resources/br.uefs.larsid.soft_iot.reputation_node.cfg
+++ b/src/main/resources/br.uefs.larsid.soft_iot.reputation_node.cfg
@@ -24,6 +24,6 @@ useCredibility=true
 useLatestCredibility=true
 # Cabeçalho do experimento de credibilidades.
 # Obs: Separe somente utilizando vírgula
-credibilityHeader=Node_ID,Type,C(n),R,Tr(n),Cr_old(n),Cr_new(n),Started_experiment_time,wrote_file_time
+credibilityHeader=Node_ID,Type,C(n),R,Tr(n),Cr_old(n),Cr_new(n),Started_experiment_time,wrote_file_time,Node_provider_ID
 
 debugModeValue=true
\ No newline at end of file