Blockstream Satellite

Summary

Blockstream Satellite broadcasts Bitcoin blockchain data over satellite. A receiver in coverage can keep a node synchronised without an internet connection. The service broadcasts the full block history as well as new blocks, so it can also support initial synchronisation.

How it works

Blockstream ground stations transmit data to satellites, which broadcast it to receivers. A local setup needs an appropriately aligned antenna, compatible receiving hardware and software. The official guide covers coverage checks, equipment and Bitcoin Satellite, the client that handles the satellite data feed.

Trust model / threat model

This gives a node another way to receive data when terrestrial connectivity fails. Reception still depends on Blockstream's broadcast infrastructure, satellite coverage and a usable signal. It does not provide an independent guarantee that the broadcaster will remain available.

Readiness

Usable. The service publishes coverage information and setup instructions. Check the local line of sight and hardware requirements before treating it as an outage plan. The broadcast is free to receive; the equipment is not supplied by that claim.

Limits

The satellite link is receive-only. A receiving dish cannot broadcast a new Bitcoin transaction back to the network; an internet connection or another outbound route is still needed. Weather or obstructions can disrupt reception. Satellite reception alone therefore does not provide complete offline payment connectivity.

Use it alongside a Bitcoin self-custody setup and broader shutdown preparation.

Primary sources

• Blockstream Satellite: broadcast service, coverage and ground stations.
• Official receiver guide: hardware and synchronisation from block history.
• Blockstream FAQ: one-way reception and signal losses.

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