Its companies span payments apps and merchant tooling with Bitcoin integration, the development of bitcoin mining hardware, open source software development, a decentralized finance protocol for peer-to-peer markets and even a self-custody hardware wallet. 

Formerly called Square and founded in 2009, the company started integrating Bitcoin into its technology offering as early as 2014 via Cash App — its most famous subsidiary — allowing merchants to accept bitcoin payments through the app. In 2021, Square Inc officially rebranded to Block Inc, doubling down on its commitment to Bitcoin and affirming its vision of the future as one where the Bitcoin Blockchain would play a pivotal role. Square became a subsidiary of Block Inc and now deals primarily with payment terminal technology. Today, Block has 8,584 BTC on its balance sheet valued at almost 1 billion dollars, with an average purchase price of 30,405 dollars per bitcoin. 

Of Block's subsidiaries and investments, most have explicit connections to Bitcoin or blockchain systems such as Cash App, Bitkey, Proto, Spiral and Tidal. All of them are advancing Bitcoin adoption at various levels of the industry and have growing influence and gratitude from the Bitcoin community. Jack Dorsey has been a leading donor to various Bitcoin nonprofits and community efforts, including OpenSats, which funds open source Bitcoin development and through which a great deal of Nostr — a Bitcoin-native social network protocol — has been bootstrapped.

In an exclusive interview with Bitcoin Magazine, Miles Suter, product lead at Block, shared insights into the company's vision for the future and Bitcoin's ideal role in it. He said that, "We think Bitcoin achieves its ultimate destiny when it's being used as everyday money. Just like Satoshi intended. I think that Bitcoin as a global financial infrastructure that everyone can access lets companies like Block operate in a much more global manner. And I think that payments are essential to maintaining the core properties that make Bitcoin unique and ultimately will make it win in the long run."

Below you'll find short overviews of some of Block's Bitcoin-related companies, particularly those serving retail, with exclusive quotes from Suter on how they serve critical roles in the path to hyperbitcoinization. 

Square

Launched in 2009, Square is a point-of-sale (POS) system enabling merchants to accept card payments and manage operations like inventory, payroll and business loans. Serving four million sellers and processing $241 billion annually as of 2024, Square announced that it began rolling out Bitcoin payments for merchants at the Bitcoin Vegas conference in 2025, allowing them to accept bitcoin seamlessly via its POS hardware.