Square to Consider Building a Bitcoin Mining System October 15, 2021 CEO Jack Dorsey said if the payments service provider begins the initiative, it would follow the open-source model it is using to build a hardware wallet. Oct 15, 2021 at 9:28 p.m. UTC Updated Oct 15, 2021 at 9:46 p.m. UTC Square CEO Jack Dorsey (CoinDesk archives) Source Spread the love