Introduction

What is SpaceComputer?

SpaceComputer is infrastructure for delivering security-critical services from satellites in low Earth orbit. The core idea is simple: a satellite orbiting at 500+ km, moving at 7.5 km/s, is physically inaccessible in a way no terrestrial data center can match. That physical isolation is a security property — not enforced by policy or guards, but by orbital mechanics.

This matters for a specific class of operations: key generation, randomness, confidential computation — workloads where trust in the hardware environment is the hard part. SpaceComputer provides that trust by putting the hardware where no one can reach it.

What's available today

Cosmic True Random Number Generation (cTRNG) is the first live service. Cosmic radiation detectors on satellites observe high-energy particles — quantum events that are genuinely, provably random. The satellite processes them into uniform random bytes, signs the data onboard, and transmits it to the ground during pass windows.

The result: true randomness you can verify came from space, not from a chip vendor's black box.

How you access it: Orbitport

Orbitport is the API gateway that abstracts orbital complexity into a normal developer experience. You don't need to understand pass windows, ground station scheduling, or satellite communication bands. You call an API or use the TypeScript SDK, and you get data.

Orbitport handles source selection (multiple satellites, multiple payloads), automatic fallback when a source is unavailable, and distributes data through a public IPFS beacon that updates every 60 seconds — no authentication required.

What's on the roadmap

SpaceTEE extends the same principle to general computation. Trusted execution environments like SGX protect code from the software stack, but the hardware is still physically accessible. SpaceTEE puts the TEE in orbit, where physical access is off the table entirely — enabling key custody, confidential compute, and attestation with a threat model that includes state-level adversaries.

Next steps

• Understand the fundamentals? Read the Concepts — satellite communication, cosmic randomness, and why orbital compute changes the security model
• Ready to integrate? Jump to the Quickstart to get your first random number in minutes
• Prefer no dependencies? See Fetch cTRNG Without the SDK for curl and raw API access
• Want full project examples? Check out the Recipes for step-by-step implementation guides