Circa Blockstream

Blockstream is a leading blockchain development company founded in 2014. Its core focus is on developing new infrastructure for the legacy financial system, with key developments revolving around Bitcoin sidechains and other blockchain-related applications. Their flagship technologies include their own implementation of the Lighting protocol and the Elements Project, an open-source sidechain blockchain platform. Blockstream has launched a number of products, such as Liquid, an inter-exchange settlement network based on Bitcoin, Blockstream Green, a secure bitcoin wallet, as well as other products that provide real-time and historical cryptocurrency trade data, and colocation services for bitcoin mining operations.