Co-founder and CEO

Blockstream

Adam Back’s hashcash proof-of-work system is used in counterspam technologies and cryptocurrency mining. Adam was one of the first people to work on Bitcoin and was contacted by Satoshi Nakamoto in 2009 to give his thoughts on hashcash's usage in Bitcoin. Adam is a founder of the technology company Blockstream, which is one of the main contributors to Bitcoin Core. As Blockstream’s CEO, Adam has been a leading developer of the Lightning Network, Liquid sidechain and other interesting projects. Adam’s contribution to Bitcoin and cryptography development has made him one of the main cryptocurrency experts today. He is actively conducting talks on such topics as privacy, scaling and the future development of Bitcoin.