Major Bitcoin infrastructure company founded by hashcash inventor Adam Back. Develops Core Lightning (c-lightning), the Liquid sidechain for confidential transactions and faster settlements, Blockstream Jade hardware wallet, Blockstream Satellite for receiving Bitcoin blocks via satellite without internet, and Blockstream Mining. A cornerstone of Bitcoin's technical ecosystem, pushing the boundaries of Layer 2, privacy, and resilience.
Accepts BTCLightningOpen Source
bitcoin infrastructureLightning NetworkLiquidsatelliteopen-source
The company behind LND, the most widely used Lightning Network implementation powering instant Bitcoin payments. Also developing Taproot Assets protocol for issuing stablecoins and other assets on Bitcoin and Lightning. Led by Elizabeth Stark, Lightning Labs drives the infrastructure that enables millions of Lightning transactions daily. Essential for the growing ecosystem of apps, wallets, and services building on Bitcoin's payment layer.
Accepts BTCLightningOpen Source
Lightning Networkbitcoin paymentsLayer 2Taproot Assetsopen-source
Bitcoin-focused subsidiary of Block (formerly Square), founded by Jack Dorsey. Develops the Lightning Development Kit (LDK), enabling any app to embed Lightning payments without running a full node. Also funds open-source Bitcoin developers through grants, supporting protocol research, wallet development, and privacy improvements. A key funder and builder in the open-source Bitcoin developer ecosystem.
Accepts BTCLightningOpen Source
bitcoin developmentopen-sourceLightningbitcoin grantsdeveloper tools
Builds StartOS, a Linux-based operating system for running Bitcoin nodes, Lightning nodes, and 30+ self-hosted applications on personal hardware. Features a marketplace of one-click installable services including Bitcoin Core, LND, Mempool, Nostr relays, and password managers. The most polished path to digital sovereignty — own your data, run your node, host your services without cloud dependencies.
Accepts BTCLightningNo-KYCOpen Source
bitcoin nodeself-hostingsovereigntypersonal serveropen-source
Cloud platform for deploying and managing Lightning Network nodes without hardware setup. Spin up LND or Core Lightning nodes in minutes with enterprise-grade reliability, automatic backups, and monitoring. Ideal for businesses building Lightning-powered products, payment processors needing high-availability routing nodes, or developers testing Lightning applications. Based in Austin, Texas — the go-to infrastructure provider for scaling Lightning commercially.
Accepts BTCLightning
Lightning nodecloud hostingLightning Networkbitcoin infrastructuremanaged
Bitcoin-native financial services company offering collaborative multisig custody where you always hold the majority of keys. Products include Bitcoin-backed loans without selling your BTC, Bitcoin IRA for tax-advantaged retirement savings, inheritance planning for passing Bitcoin to heirs, and trading desk for large purchases. Based in Austin, Texas — the leading provider of Bitcoin financial services that don't require surrendering custody of your keys.
Accepts BTC
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New York-based Bitcoin-only financial firm offering institutional custody, trading, lending, and mining infrastructure services under a New York Trust Company charter. Sub-custodian for U.S. Bank's institutional Bitcoin program and a key player in the Bitcoin ETF custody ecosystem. One of the most regulated and institutionally credible pure-Bitcoin companies in the United States.
Accepts BTC
bitcoin custody institutionalbitcoin financial servicesbitcoin ETF custodybitcoin lendinginstitutional bitcoin
Pioneering Bitcoin custody company offering multi-signature wallets, staking, trading, and lending services to over 1,500 institutional clients with $90+ billion in assets under custody. Received OCC national bank charter approval in 2025 and filed for a $200M NYSE IPO. The gold standard for institutional-grade Bitcoin multisig custody since 2013.
Accepts BTC
bitcoin institutional custodymultisig custodybitcoin financial servicesbitcoin lendinginstitutional wallet
Bitcoin-first self-custody service offering guided setup for 2-of-3 and 3-of-5 multisig vaults with Casa holding one key as a backup — you keep the majority. Also provides inheritance planning tools, emergency key recovery, and dedicated onboarding support. Designed for individuals and families who want hardware wallet security without managing solo multisig complexity.
Accepts BTC
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Toronto-based Bitcoin financial services company offering USD loans collateralized by Bitcoin, B2X (leveraged Bitcoin), and savings accounts that generate yield on Bitcoin holdings. Licensed and regulated, with a proof-of-reserves attestation process to verify client assets. For Bitcoiners who want liquidity without selling their stack.
Accepts BTC
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Bitcoin rewards debit card and financial app that converts everyday spending into Bitcoin cashback — linked to Visa with instant sats rewards on every transaction. Also offers recurring Bitcoin buys (DCA) and privacy-focused financial tools. For Bitcoiners who want to earn and stack sats passively through day-to-day life.
Accepts BTC
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Gibraltar-licensed private bank that holds both US dollar deposits and Bitcoin in the same regulated account, earning interest on both with FDIC-equivalent deposit insurance. Offers a debit card, SWIFT transfers, and instant Bitcoin-to-USD conversion. For high-net-worth Bitcoiners who want regulated banking with Bitcoin as a first-class citizen.
Accepts BTCLightning
bitcoin bankbitcoin savings accountbitcoin interestregulated bitcoinbitcoin USD account
First Bitcoin custody provider to offer underwritten insurance for self-custody Bitcoin through Lloyd's of London, using Trident Vault multisig technology. Clients hold their own keys in a multisig setup while AnchorWatch provides the insurance policy that protects against theft and key loss. A breakthrough for fiduciaries, funds, and serious HODLers who need institutional-grade security with third-party insurance.
Accepts BTC
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Bitcoin company founded by Samson Mow focused on sovereign Bitcoin adoption — working with nation-states, institutions, and developers to integrate Bitcoin at scale. Creator of the Aqua wallet and architect of several national Bitcoin initiatives. Named for January 3rd, the date of Bitcoin's genesis block, embodying long-term conviction in Bitcoin as global monetary infrastructure.
Accepts BTCLightningNo-KYC
bitcoin adoptionbitcoin nation statebitcoin companysovereign bitcoinbitcoin infrastructure
First dedicated Bitcoin-only venture fund investing exclusively in companies and protocols that strengthen the Bitcoin ecosystem — no altcoins, no blockchain projects. Portfolio includes mining companies, infrastructure providers, financial services, and applications that grow Bitcoin's reach and utility. Named for Bitcoin's block subsidy cap: 21 million coins, 10^31 satoshis of potential.
Accepts BTC
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Bitcoin lending platform where you secure a USD loan using Bitcoin as collateral — without giving up custody of your coins until liquidation thresholds are crossed. Uses a non-custodial smart contract architecture so neither party can run off with the Bitcoin during the loan term. Borrow dollars, hold your Bitcoin, never sell the dip.
Accepts BTC
bitcoin loansbitcoin collateralnon-custodial loanbitcoin DeFiborrow against bitcoin
Publicly traded company (NASDAQ: MSTR) that adopted Bitcoin as its primary treasury reserve asset in 2020 under CEO Michael Saylor. Holds over 400,000 BTC, making it the largest corporate Bitcoin holder in the world. A defining case study in corporate Bitcoin adoption and the Bitcoin treasury strategy.
Accepts BTC
corporate bitcoinbitcoin treasuryMSTRMichael Saylorbitcoin strategy
Canadian Bitcoin hardware company that manufactures the Coldcard hardware wallet, Opendime disposable hardware wallets, TAPSIGNER NFC signing devices, and SATSCARD bearer instruments. A cornerstone of Bitcoin self-custody infrastructure — focused exclusively on Bitcoin security hardware since 2012.
Accepts BTCNo-KYCOpen Source
bitcoin hardwareColdcard makerOpendimeTAPSIGNERbitcoin security
Bitcoin-native payments company led by Jack Mallers that enables instant, low-cost global payments over the Lightning Network. Offers a consumer app for buying Bitcoin and sending payments, plus Strike API for businesses. Key player in making Lightning accessible to mainstream users.
Accepts BTCLightning
lightning paymentsbitcoin appJack Mallersinstant paymentsbitcoin company
Building on the Fedimint open-source protocol, Fedi provides federated Bitcoin custody that allows communities to pool trust across multiple guardians rather than relying on a single custodian. Designed for emerging markets and community groups who want collective custody without depending on centralized services.
Accepts BTCLightningNo-KYCOpen Source
federated custodyFedimintcommunity bitcoinemerging marketscollective custody
The leading Bitcoin restaking protocol enabling BTC holders to stake their Bitcoin to secure proof-of-stake networks and earn yield — without giving up custody or bridging to another chain. Babylon uses a novel cryptographic slashing mechanism anchored to Bitcoin timestamps. With approximately 2.8 billion dollars in total value locked, it is the largest DeFi protocol on Bitcoin by TVL.
No-KYCOpen Source
Bitcoin DeFirestakingstakingTVLproof-of-stakeyield
Liquid staking protocol built on top of Babylon that lets Bitcoin holders earn staking yields while maintaining liquidity through the LBTC token. Stake BTC, receive LBTC, and use it across DeFi — all while your underlying Bitcoin earns restaking rewards. Integrated with 70+ DeFi protocols and growing. Approximately 800 million dollars in total value locked.
No-KYCOpen Source
liquid stakingLBTCBitcoin DeFiBabylonyieldrestaking
Japanese publicly traded investment company executing the most aggressive Bitcoin treasury strategy in Asia. Holds over 35,000 BTC accumulated since April 2024, making it one of the largest corporate Bitcoin holders globally. Follows the Strategy (MicroStrategy) playbook of using corporate treasury and capital markets to accumulate Bitcoin as a long-term store of value. Listed on the Tokyo Stock Exchange.
Bitcoin treasurycorporate BitcoinJapanpublic companyBTC accumulation
The first cryptocurrency company to receive a federal bank charter from the U.S. Office of the Comptroller of the Currency (OCC) in January 2021. Provides institutional-grade custody, trading, staking, and governance services for digital assets including Bitcoin. Serves as a qualified custodian for SEC-regulated entities. Partners with Cantor Fitzgerald for Bitcoin-backed financing.
custodyinstitutionalbankOCC charterregulatedBitcoin custody
US-based medical device company that adopted an aggressive Bitcoin treasury strategy in mid-2024, rapidly accumulating over 5,000 BTC. Plans to reach 105,000 BTC by 2027 through ongoing capital market operations. Follows the Strategy (MicroStrategy) playbook of using corporate treasury to hold Bitcoin as a long-term store of value. One of the fastest-growing corporate Bitcoin holders by accumulation pace.
Bitcoin treasurycorporate Bitcoinpublic companyBTC accumulationSMLR