diff --git a/proto/decentraland/sdk/components/network_entity.proto b/proto/decentraland/sdk/components/network_entity.proto
new file mode 100644
index 00000000..b7aae9d1
--- /dev/null
+++ b/proto/decentraland/sdk/components/network_entity.proto
@@ -0,0 +1,21 @@
+syntax = "proto3";
+
+package decentraland.sdk.components;
+
+import "decentraland/sdk/components/common/id.proto";
+option (common.ecs_component_id) = 1098;
+
+/**
+ * NetworkEntity marks an entity for network synchronization.
+
+ * When receiving network messages, to find which local entity they refer to,
+ * we look for an entity that has both the same networkId and entityId as the message.
+ */
+message PBNetworkEntity {
+  // The enumId or local entity ID
+  uint32 entity_id = 1;
+  
+  // - 0 for fixed entities (created with enumId at initialization)
+  // - User's address hash for dynamic entities (created at runtime)
+  uint64 network_id = 2;
+}
diff --git a/proto/decentraland/sdk/components/synced_clock.proto b/proto/decentraland/sdk/components/synced_clock.proto
new file mode 100644
index 00000000..db4cd003
--- /dev/null
+++ b/proto/decentraland/sdk/components/synced_clock.proto
@@ -0,0 +1,31 @@
+syntax = "proto3";
+
+package decentraland.sdk.components;
+
+import "decentraland/sdk/components/common/id.proto";
+option (common.ecs_component_id) = 1099;
+
+// PBTimeComponent provides synchronized time information based on NTP server data
+// This component can be used to maintain consistent time across all clients
+message PBSyncedClock {
+  // The current synchronized time (in milliseconds since epoch)
+  uint64 synced_timestamp = 1;
+
+  // The synchronization status
+  SyncStatus status = 7;
+}
+
+// Status of time synchronization
+enum SyncStatus {
+  // The component is not yet synchronized with the NTP server
+  SS_UNINITIALIZED = 0;
+
+  // The component is currently attempting to synchronize with the NTP server
+  SS_SYNCHRONIZING = 1;
+
+  // The component is successfully synchronized with the NTP server
+  SS_SYNCHRONIZED = 2;
+
+  // The component failed to synchronize with the NTP server
+  SS_ERROR = 3;
+}
diff --git a/proto/decentraland/sdk/components/tween.proto b/proto/decentraland/sdk/components/tween.proto
index 2ed6d784..8fe151c0 100644
--- a/proto/decentraland/sdk/components/tween.proto
+++ b/proto/decentraland/sdk/components/tween.proto
@@ -20,6 +20,7 @@ message PBTween {
 
   optional bool playing = 6; // default true (pause or running)
   optional float current_time = 7; // between 0 and 1
+  optional uint64 start_synced_timestamp = 9; // timestamp (in milliseconds) when the tween started, allows synchronization across clients
 }
 
 message Move {