Official Blockstream logo
Number of employees
Blockstream is a blockchain technology company led by co-founder Adam Back and founded by Gregory Maxwell, Pieter Wuille, Jonathan Wilkins, Matt Corallo, and others. Blockstream intends to develop software to "break off" transactions from the bitcoin network, and charge a fixed monthly fee to allow people to use alternative "sidechains".
Blockstream employs a large number of prominent Bitcoin Core developers.
The Liquid Network
On October 12, 2015, Blockstream announced the release of its Liquid sidechain prototype which could allow for the transfer of assets between the sidechain and the main blockchain. On October 11, 2018, a production-ready implementation of the sidechain was officially launched, called the Liquid Network. Blockstream produces software that facilitates interoperability between the Bitcoin main chain and the sidechain.[page needed] Blockstream claims that Liquid reduces the delays and friction involved in a normal transfer of bitcoin. Blockstream asserts participating exchanges–including Bitfinex, BitMEX and OKCoin–can make near-instant exchanges between their accounts and orderbooks. The company has proposed that the Liquid sidechain, which is a pegged sidechain, be added to the bitcoin protocol.
In 2017 Blockstream announced the availability of one-way satellite broadcasting of the full Bitcoin blockchain. In 2018 Blockstream extended the Bitcoin satellite network to four satellites across six coverage zones, adding Asia and Pacific region coverage, and released API specifications to allow users to send data over its network. The network as of 2019 is only a one-way network and the user still needs a connection to the Bitcoin network to send transactions, which can include SMS gateways  or higher cost internet which would be expensive for receiving full Bitcoin block data, but is cost effective to send a single transaction.
In addition to its corporate initiatives, Blockstream is also involved in a number of community steering and open source programs.
Blockstream employs a number of prominent Bitcoin Core developers. The company has been attempting to make it possible to "break off" transactions from the Bitcoin network, making the number of transactions the network could handle less important.
In April 2017, Blockstream released a paper on Confidential Assets, an extension of Confidential Transactions (which is itself derived from an Adam Back proposal for homomorphic values applied to Bitcoin).
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