1. Introduction

The Open Geospatial Consortium (OGC) is releasing this Call for Participation (CFP) to solicit proposals for the OGC Testbesd-20. The Testbed-20 initiative will explore four tasks, including Integrity, Provenance, and Trust (IPT), GEOINT Imagery Media for Intelligence, Surveillance, and Reconnaissance (ISR) imagery (GIMI), Advancements of GeoDataCubes, and High-Performance Computing Optimized Formats.