Off-Grid & Satellite Bitcoin Connectivity: Reach the Network Without an ISP (2026)

Bitcoin is designed to work without permission, but in practice most nodes and miners still ride a terrestrial internet connection that a storm, an outage, or a government can cut. This dataset maps the way around that: how Bitcoin data reaches and leaves the sky when there’s no ISP at all. It’s the non-terrestrial companion to our terrestrial LoRa-mesh coverage — satellites, sat-phones and ham radio instead of neighbor-to-neighbor relays — and it’s organized around the one distinction that decides everything: which direction the data flows.

Receiving is free; broadcasting is the hard half

Here’s the asymmetry that catches people out. Receiving Bitcoin off-grid is a solved problem and it’s free: Blockstream Satellite continuously broadcasts the entire blockchain from four geostationary satellites, so a roughly $150 dish-and-SDR setup keeps a full node in consensus sync with zero internet, forever. But a receive-only downlink physically cannot transmit — so the moment you want to spend, you need an uplink to broadcast your signed transaction, and there’s no free lunch there. Starlink gives you full broadband but it’s one KYC’d company drawing 50–100 watts. Rogers Satellite (Starlink’s direct-to-cell service) turns any ordinary phone into a C$15/month transaction-broadcast channel — the cheap breakthrough of 2025–26. A single Iridium Short Burst message pushes a 340-byte payload from the literal North Pole for pennies. And a JS8Call transmission over ham radio needs nothing but a transceiver and a licensed friend with internet. The robust off-grid stack is asymmetric on purpose: free satellite downlink for blocks, plus the smallest paid uplink you can tolerate for spends.

What’s changed, and what to ignore

This is a fast-moving space, so two warnings matter. First, Swarm is dead — SpaceX shut its $5/month VHF IoT network down in March 2025, yet guides written in 2021–2024 still recommend it for off-grid transaction broadcast. That path is gone; its spiritual successor is Starlink Direct-to-Cell. Second, don’t wait on AST SpaceMobile — its true-broadband-to-phones promise is real but pre-commercial, has slipped to 2027, and has no announced Canadian carrier. For a remote Canadian cabin or mining site today, the realistic stack is Starlink as the primary link (full-Canada coverage including the territories, runs nodes and pools outright), Rogers Satellite on your phone as the pocket broadcast channel, a Blockstream Satellite receiver as the outage-proof block feed, and Iridium as the only layer that still works in the High Arctic where geostationary look angles fail.

For the terrestrial side of resilient Bitcoin comms — relaying transactions neighbor-to-neighbor over LoRa — see the mesh protocols comparison and the Meshtastic Canada hub; the two datasets are complements, one for when you have a neighbor and one for when you don’t. If you’re planning an off-grid mining or node site, pair this with curtailment and demand-response planning and the power side of the build. Sovereignty isn’t just holding your own keys — it’s being able to reach the network on your own terms, even when the grid can’t.