Platform Architecture


The Embassy implements trusted, commodity hardware that can be purchased online or at most electronics stores.

  • Raspberry Pi 4B
  • CPU: Cortex-A72
  • Memory : 4GB RAM
  • Storage: 128GB High Endurance MicroSD
  • Speaker for audio feedback

Ambassador OS

The Embassy comes pre-installed with Start9's own Ambassador OS, a stripped-down and augmented version of Raspbian Buster Lite. Ambassador handles Embassy setup, owner authentication, Tor Hidden Service management, networking, and the installation, configuration, and serving of sovereign apps. Ambassador is at the heart of Start9's technology stack and what makes the our unprecedented user experience possible.

Embassy App

Available on iOS and Android. The Embassy App is the user interface for Ambassador, a private and secure remote control for managing your Embassy from anywhere in the world without trusting anyone. All communications between the Embassy App and the Embassy are direct, private, encrypted, and anonymous over the Tor.

Sovereign App Store

A repository for browsing and downloading open-source, distributed applications onto your Embassy. Apps binaries are made available unaltered and thinly wrapped with an Ambassador manifest, enabling the Embassy's unprecedented ease of installation, configuration, and overall user experience. The Sovereign App Store is currently hosted and managed by Start9 Labs but soon evolve into a distributed, trustless experience, and thereby removing the final piece of trust from the entire system.


Start9 Labs is not in the business of building decentralized nodes and applications. The world of self-hosted, open source applications is already rich and expanding by the day: decentralized consensus protocols such as Bitcoin; payment networks such as Lightning; communications platforms such Cups and Matrix; storage protocols such as IPFS. Instead, Start9 Labs aims to grant these existing applications an unprecedented platform and distribution mechanism, unleashing their incredible potential for creating a more private and just world.