Block, Inc. is a U.S.-based fintech company originally known as Square, Inc. It was founded in 2009 by Jack Dorsey and Jim McKelvey to provide accessible payment solutions to small businesses. On December 10, 2021, the company rebranded as Block, Inc. to better encompass its growing portfolio—including Square, Cash App, TIDAL, and Bitcoin-focused initiatives—while allowing the Square brand to continue as part of its seller ecosystem