The Blockstream Satellite API is currently in Beta and is utilizing Lightning Testnet method for payment. The Blockstream RESTful Satellite API responds with a JSON object and allows you to submit messages for broadcast, that support broadcasting secure messaging, alternative blockchains, a global podcast and more. It provides a way to create applications that broadcast messages globally using the Blockstream Satellite network. It is open for anyone to integrate the API into existing applications or build new services that can send both encrypted and unencrypted data. The Blockstream Satellite network broadcasts the Bitcoin blockchain for free. Blockstream aims to reduce reliance on trust, by providing global Bitcoin and blockchain technology for financial markets.