diff --git a/lib/Controller/ActivityPubController.php b/lib/Controller/ActivityPubController.php
index 39862334..9e0a9a84 100644
--- a/lib/Controller/ActivityPubController.php
+++ b/lib/Controller/ActivityPubController.php
@@ -167,9 +167,9 @@ class ActivityPubController extends Controller {
 
 			$activity = $this->importService->importFromJson($body);
 			if (!$this->signatureService->checkObject($activity)) {
-				$activity->setOrigin($origin);
+				$activity->setOrigin($origin, SignatureService::ORIGIN_HEADER);
 			}
-			
+
 			try {
 				$this->importService->parseIncomingRequest($activity);
 			} catch (UnknownItemException $e) {
@@ -208,7 +208,7 @@ class ActivityPubController extends Controller {
 
 			$activity = $this->importService->importFromJson($body);
 			if (!$this->signatureService->checkObject($activity)) {
-				$activity->setOrigin($origin);
+				$activity->setOrigin($origin, SignatureService::ORIGIN_HEADER);
 			}
 
 			try {
diff --git a/lib/Model/ActivityPub/Item.php b/lib/Model/ActivityPub/Item.php
index 1b70038e..f2c0f89f 100644
--- a/lib/Model/ActivityPub/Item.php
+++ b/lib/Model/ActivityPub/Item.php
@@ -103,6 +103,9 @@ class Item {
 	/** @var string */
 	private $origin = '';
 
+	/** @var int */
+	private $originSource = 0;
+
 
 	/**
 	 * @return string
@@ -432,13 +435,23 @@ class Item {
 		return $this->origin;
 	}
 
+	/**
+	 * @return int
+	 */
+	public function getOriginSource(): int {
+		return $this->originSource;
+	}
+
 	/**
 	 * @param string $origin
 	 *
+	 * @param int $source
+	 *
 	 * @return Item
 	 */
-	public function setOrigin(string $origin): Item {
+	public function setOrigin(string $origin, int $source): Item {
 		$this->origin = $origin;
+		$this->originSource = $source;
 
 		return $this;
 	}
@@ -512,7 +525,6 @@ class Item {
 	}
 
 
-
 	/**
 	 * @return string
 	 */
diff --git a/lib/Service/SignatureService.php b/lib/Service/SignatureService.php
index 1c8d2628..f9eb5c64 100644
--- a/lib/Service/SignatureService.php
+++ b/lib/Service/SignatureService.php
@@ -56,6 +56,10 @@ class SignatureService {
 	use TArrayTools;
 
 
+	const ORIGIN_HEADER = 1;
+	const ORIGIN_SIGNATURE = 2;
+
+
 	const DATE_FORMAT = 'D, d M Y H:i:s T';
 	const DATE_DELAY = 30;
 
@@ -165,7 +169,7 @@ class SignatureService {
 			$signature->import(json_decode($object->getSource(), true));
 			$signature->setPublicKey($this->retrieveKey($actorId));
 			if ($signature->verify()) {
-				$object->setOrigin($this->getKeyOrigin($actorId));
+				$object->setOrigin($this->getKeyOrigin($actorId), SignatureService::ORIGIN_SIGNATURE);
 
 				return true;
 			}
@@ -294,6 +298,7 @@ class SignatureService {
 	 * @throws SocialAppConfigException
 	 * @throws UnknownItemException
 	 * @throws RedundancyLimitException
+	 * @throws InvalidOriginException
 	 */
 	private function retrieveKey($keyId): string {
 		$actor = $this->cacheActorService->getFromId($keyId);