AX Enterprize, LLC AX Enterprize, LLC HTT Consulting The Drone Remote Identification Protocol (DRIP), plus trust policies and periodic access to registries, augments Unmanned Aircraft System Remote Identification (UAS RID), enabling local real time assessment of trustworthiness of received RID messages and observed UAS, even by Observers then lacking Internet access. This document defines DRIP message types and formats to be sent in Broadcast RID Authentication Messages to verify that attached and recent detached messages were signed by the registered owner of the DRIP Entity Tag (DET) claimed.