diff --git a/assets/asset.go b/assets/asset.go
index 7db83f6..05fbbfe 100644
--- a/assets/asset.go
+++ b/assets/asset.go
@@ -93,6 +93,9 @@ func (a *Asset) injectMetadata(stub *sw.StubWrapper) errors.ICCError {
 	}
 	(*a)["@lastUpdated"] = lastUpdated.AsTime().Format(time.RFC3339)
 
+	lastTxID := stub.Stub.GetTxID()
+	(*a)["@lastTxID"] = lastTxID
+
 	return nil
 }
 
diff --git a/test/assets_put_test.go b/test/assets_put_test.go
index 2415af3..8fe5ac2 100644
--- a/test/assets_put_test.go
+++ b/test/assets_put_test.go
@@ -25,6 +25,7 @@ func TestPutAsset(t *testing.T) {
 		"@key":         "person:47061146-c642-51a1-844a-bf0b17cb5e19",
 		"@lastTouchBy": "org1MSP",
 		"@lastTx":      "",
+		"@lastTxID":    "TestPutAsset",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
 		"@assetType":   "person",
 		"name":         "Maria",
@@ -161,6 +162,7 @@ func TestPutNewAssetRecursive(t *testing.T) {
 		"@lastTouchBy": "org1MSP",
 		"@lastTx":      "",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
+		"@lastTxID":    "TestPutAsset",
 		"title":        "Meu Nome é Maria",
 		"author":       "Maria Viana",
 		"currentTenant": map[string]interface{}{
@@ -169,6 +171,7 @@ func TestPutNewAssetRecursive(t *testing.T) {
 			"@lastTouchBy": "org1MSP",
 			"@lastTx":      "",
 			"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
+			"@lastTxID":    "TestPutAsset",
 			"name":         "Maria",
 			"id":           "31820792048",
 			"height":       1.66,
@@ -190,6 +193,7 @@ func TestPutNewAssetRecursive(t *testing.T) {
 		"@lastTouchBy": "org1MSP",
 		"@lastTx":      "",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
+		"@lastTxID":    "TestPutAsset",
 		"title":        "Meu Nome é Maria",
 		"author":       "Maria Viana",
 		"currentTenant": map[string]interface{}{
@@ -270,6 +274,7 @@ func TestUpdateRecursive(t *testing.T) {
 		"@lastTouchBy": "org1MSP",
 		"@lastTx":      "",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
+		"@lastTxID":    "TestUpdateAsset",
 		"title":        "Meu Nome é Maria",
 		"author":       "Maria Viana",
 		"currentTenant": map[string]interface{}{
@@ -278,6 +283,7 @@ func TestUpdateRecursive(t *testing.T) {
 			"@lastTouchBy": "org1MSP",
 			"@lastTx":      "",
 			"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
+			"@lastTxID":    "TestUpdateAsset",
 			"name":         "Maria",
 			"id":           "31820792048",
 			"height":       1.88,
@@ -300,6 +306,7 @@ func TestUpdateRecursive(t *testing.T) {
 		"@lastTouchBy": "org1MSP",
 		"@lastTx":      "",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
+		"@lastTxID":    "TestUpdateAsset",
 		"title":        "Meu Nome é Maria",
 		"author":       "Maria Viana",
 		"currentTenant": map[string]interface{}{
diff --git a/test/tryout_test.go b/test/tryout_test.go
index ab32099..11b06c2 100644
--- a/test/tryout_test.go
+++ b/test/tryout_test.go
@@ -27,6 +27,7 @@ func TestTryout(t *testing.T) {
 			"@lastTouchBy": "org1MSP",
 			"@lastTx":      "createAsset",
 			"@assetType":   "person",
+			"@lastTxID":    "createAsset",
 			"name":         "Maria",
 			"id":           "31820792048",
 			"height":       0.0,
@@ -63,6 +64,7 @@ func TestTryout(t *testing.T) {
 			"@lastTouchBy": "org2MSP",
 			"@lastTx":      "createAsset",
 			"@assetType":   "book",
+			"@lastTxID":    "createAsset",
 			"title":        "Meu Nome é Maria",
 			"author":       "Maria Viana",
 			"currentTenant": map[string]interface{}{
@@ -116,6 +118,7 @@ func TestTryout(t *testing.T) {
 		"@lastTouchBy": "org2MSP",
 		"@lastTx":      "updateAsset",
 		"@assetType":   "person",
+		"@lastTxID":    "updateAsset",
 		"name":         "Maria",
 		"id":           "31820792048",
 		"height":       1.67,
diff --git a/test/tx_createAssetType_test.go b/test/tx_createAssetType_test.go
index 781c5c5..1abf623 100644
--- a/test/tx_createAssetType_test.go
+++ b/test/tx_createAssetType_test.go
@@ -122,6 +122,7 @@ func TestCreateAssetType(t *testing.T) {
 		"@lastTx":      "createAsset",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
 		"@assetType":   "magazine",
+		"@lastTxID":    "createAsset",
 		"name":         "MAG",
 		"images": []interface{}{
 			"url.com/1",
diff --git a/test/tx_createAsset_test.go b/test/tx_createAsset_test.go
index bc0bed8..4ac2320 100644
--- a/test/tx_createAsset_test.go
+++ b/test/tx_createAsset_test.go
@@ -39,6 +39,7 @@ func TestCreateAsset(t *testing.T) {
 		"@lastTx":      "createAsset",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
 		"@assetType":   "person",
+		"@lastTxID":    "createAsset",
 		"name":         "Maria",
 		"id":           "31820792048",
 		"height":       0.0,
@@ -139,6 +140,7 @@ func TestCreateAssetGenericAssociation(t *testing.T) {
 		"@lastTx":      "createAsset",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
 		"@assetType":   "person",
+		"@lastTxID":    "createAsset",
 		"name":         "Maria",
 		"id":           "31820792048",
 		"height":       0.0,
@@ -250,6 +252,7 @@ func TestCreatePrivate(t *testing.T) {
 		"@assetType":   "secret",
 		"@lastTouchBy": "org2MSP",
 		"@lastTx":      "createAsset",
+		"@lastTxID":    "createAsset",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
 		"secretName":   "testSecret",
 		"secret":       "this is very secret",
diff --git a/test/tx_updateAsset_test.go b/test/tx_updateAsset_test.go
index 9787213..fe2f3da 100644
--- a/test/tx_updateAsset_test.go
+++ b/test/tx_updateAsset_test.go
@@ -71,6 +71,7 @@ func TestUpdateAsset(t *testing.T) {
 		"@key":         "person:47061146-c642-51a1-844a-bf0b17cb5e19",
 		"@lastTouchBy": "org1MSP",
 		"@lastTx":      "updateAsset",
+		"@lastTxID":    "updateAsset",
 		"@lastUpdated": lastUpdated.AsTime().Format(time.RFC3339),
 		"@assetType":   "person",
 		"name":         "Maria",