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Block Inc. (NYSE: XYZ, formerly Square) is the most Bitcoin-integrated public company in the world — not just in terms of treasury holdings, but in the fundamental architecture of its products. CEO Jack Dorsey has made Bitcoin a core part of Block's identity and long-term vision. Here's a comprehensive look at Block's Bitcoin strategy in 2026.
What Is Block Inc.?
Block Inc. is a financial technology company founded by Jack Dorsey and Jim McKelvey in 2009 as Square, a mobile payments company. In 2021, the company rebranded to Block to signal its broader mission around the Bitcoin ecosystem. Block's major business units include:
- Square: Point-of-sale and merchant payment processing
- Cash App: Consumer fintech app (banking, investing, payments)
- Afterpay: Buy-now-pay-later (acquired 2021)
- Bitkey: Bitcoin self-custody hardware wallet
- Proto: Bitcoin mining hardware and infrastructure
- TBD: Open-source decentralized financial infrastructure
Block generated over $20 billion in revenue in 2025, with Bitcoin-related revenue as one of the largest and fastest-growing segments.
Block's Bitcoin Treasury
Block holds Bitcoin on its balance sheet as a corporate treasury asset. In October 2020, Square (as it was then called) made its first Bitcoin purchase of $50 million (approximately 4,709 BTC at the time). In February 2021, Square added another $170 million in Bitcoin.
By 2026, Block holds approximately 8,000+ BTC on its balance sheet — a position worth roughly $700M+ at current prices.
Key difference from MicroStrategy: Block is not primarily a Bitcoin treasury vehicle. Bitcoin is one line item in a diversified fintech company's balance sheet, not the entire thesis. The treasury holding is meaningful but not existential to Block's business.
Cash App: Block's Bitcoin Revenue Engine
Cash App is Block's consumer-facing product, and Bitcoin is a cornerstone of its differentiation:
Bitcoin Buying and Selling
Cash App allows users to buy, sell, and hold Bitcoin directly within the app. In 2025, Cash App generated over $10 billion in Bitcoin revenue — though most of this is gross revenue from price spreads, with net profit (gross profit on Bitcoin) much lower.
Cash App charges a spread of approximately 1-3% on Bitcoin purchases. For millions of users making small, regular BTC purchases (DCA), Cash App is their entry point into Bitcoin.
Lightning Network Integration
Cash App supports Lightning Network payments — instant, near-zero-fee Bitcoin transactions. This makes Cash App one of the few major fintech apps where users can receive and send Lightning payments to standard Lightning addresses.
Bitcoin Round-Ups
Cash App's "Bitcoin Round-Ups" feature automatically converts spare change from debit card purchases into Bitcoin — a micro-DCA feature built for mainstream users.
Bitkey: Block's Self-Custody Hardware Wallet
Bitkey is Block's hardware Bitcoin wallet, launched in December 2023. It represents Block's commitment to the self-custody vision at the product level:
- 2-of-3 multisig design: Phone key + Bitkey hardware key + Block recovery key
- Open-source firmware
- Mobile app integration
- $150 price point
- Available globally
Bitkey is notable because a large fintech company building self-custody hardware directly challenges the "not your keys, not your Bitcoin" vs. exchange convenience tradeoff. Block is explicitly telling users to hold their own keys — even at some cost to Cash App's custodial business.
Proto: Bitcoin Mining Infrastructure
Proto is Block's Bitcoin mining hardware division. Block has developed its own ASIC miner chip, with the goal of making Bitcoin mining more decentralized and accessible:
- Three-chip ASIC design for improved performance
- Focus on home and small-scale miners (not industrial)
- Proto hardware integrates with Bitkey for self-sovereign mining
- Aligns with Jack Dorsey's stated goal of making Bitcoin mining more distributed
TBD: Open Protocol for Decentralized Finance
TBD is Block's open-source project building decentralized identity and financial infrastructure on Bitcoin:
- Web5: A decentralized web platform using Bitcoin and DIDs (Decentralized Identifiers)
- tbDEX: Open protocol for decentralized exchange and value transfer
- Focus on financial access in underbanked markets
- Open source, not a Block-controlled product
TBD represents Block's long-term bet that Bitcoin becomes the backbone of internet-native financial infrastructure beyond simple storage of value.
Jack Dorsey's Bitcoin Philosophy
Dorsey is one of Bitcoin's most prominent corporate advocates — notably, he is a Bitcoin maximalist who left Twitter's (now X) board and refused to add Bitcoin support to X, prioritizing Block's Bitcoin focus.
Dorsey's public positions:
- Bitcoin is the "native currency of the internet"
- Lightning Network is the key to Bitcoin's use as actual money
- Self-custody is essential for financial sovereignty
- Bitcoin will displace gold as the primary store of value
- Ethereum and other cryptocurrencies are distractions (Bitcoin-only focus)
Block vs. Coinbase: Bitcoin Company Comparison
| Aspect | Block Inc. | Coinbase |
|---|---|---|
| Primary business | Payments + Bitcoin products | Crypto exchange |
| Bitcoin focus | Bitcoin-only products | Multi-asset exchange |
| Self-custody product | Bitkey (hardware wallet) | No hardware wallet |
| Lightning support | Yes (Cash App) | Limited |
| Mining involvement | Proto mining hardware | No |
| Revenue model | Payments, spreads, subscriptions | Trading fees, custody fees |
| Treasury BTC | ~8,000 BTC | ~9,000 BTC (corporate) |
Investment Thesis on Block Stock
For investors considering Block as a Bitcoin proxy:
Bull case:
- Cash App's Bitcoin revenue grows with broader adoption
- Bitkey + Lightning creates a self-custody ecosystem moat
- Proto positions Block in the mining supply chain
- Jack Dorsey's vision and execution track record
Bear case:
- Intense competition in payments (PayPal, Venmo, traditional banks)
- Afterpay underperformance in high-interest-rate environment
- Bitcoin revenue has low margins (spread revenue, not high-value custody)
- Block stock is not a clean Bitcoin proxy — operational risk is significant
For pure Bitcoin exposure, IBIT or FBTC are simpler. Block stock is appropriate for investors who believe in both Bitcoin adoption AND Block's execution as a fintech company.
Summary
Block Inc. is the most Bitcoin-integrated fintech company in the world. The combination of Cash App's Bitcoin revenue, Bitkey's self-custody hardware, Proto's mining infrastructure, and TBD's open protocols represents a coherent, long-term bet that Bitcoin becomes the foundation of internet-native finance. Jack Dorsey's personal conviction and Block's organizational alignment around this vision make it unlike any other public company in the Bitcoin space.