"With the advent of Blockstream Satellite and widely broadcasted, passively-receivable Bitcoin data, a new era of Bitcoin adoption can occur. Areas without access to fast broadband connections can now trustlessly verify Bitcoin blocks and transactions, and receive BTC discreetly with common cheap hardware. With the Satellite API, those same areas can now receive arbitrary data — current market data, private messages, and data from exciting new use cases not thought of yet. All free. The broadcasts are free and the software is free with code available for auditing and improvement by the community..."


https://medium.com/@notgrubles/completely-offline-bitcoin-transactions-4e58324637bd