Ecosystem
People
Everyone listed is here because an organisation in the directory references them. Profiles cover public professional work only, and carry their sources.
- Adam BackCo-founder, CEO, Cryptographer · BlockstreamCo-founder and CEO of Blockstream, and the author of Hashcash, the proof-of-work scheme cited in the Bitcoin whitepaper.
- Ádám FicsórDeveloper, Founder · Wasabi WalletThe developer who started the work that became Wasabi Wallet and presented version 1.0 at Building on Bitcoin in 2018.
- Adam SullivanCEO, President, Director · Core ScientificPresident and chief executive officer of Core Scientific, who took the role months before the company emerged from Chapter 11.
- Aiden McClellandCo-founder, Lead Developer · Start9Co-founder and lead developer of Start9 Labs, named in those roles on the company's own news page.
- Alan ReinerFounder, Software Engineer · ArmoryThe creator of the Armory wallet, who built the first widely used implementation of air-gapped cold storage for Bitcoin.
- Alekos FiliniEngineer, Board director · Bitcoin Dev KitAn early Bitcoin Dev Kit developer who wrote the project's first public introduction, and a director of the Bitcoin Dev Kit Foundation.
- Alena VránováCo-founder · SatoshiLabsCo-founder of SatoshiLabs, who joined during development of the first Trezor prototype and worked on the fundraising that turned it into a company.
- Alex GladsteinChief Strategy Officer, Author · Human Rights FoundationChief Strategy Officer at the Human Rights Foundation and the most published advocate of the argument that Bitcoin matters as a human rights tool.
- Alex LeishmanFounder, CEO, CTO · RiverFounder of River Financial Inc., where the company's own about page lists him as Founder, CEO and CTO.
- Alex MorcosCo-founder · Bitcoin OptechCo-founder of Chaincode Labs and a Bitcoin Core contributor, previously a co-founder of the trading firm Hudson River Trading.
- Alexander MashinskyFounder, CEO · Celsius NetworkFounder and former chief executive of Celsius Network, convicted in 2024 of commodities fraud and securities fraud committed at the company.
- Andrew CamilleriEngineer, Maintainer · BTCPay ServerA lead developer of BTCPay Server, working publicly under the handle Kukks.
- Antoine PoinsotEngineer · Bitcoin CoreA Chaincode Labs engineer working on network resilience and implementation security, and a co-founder of the Bitcoin security company Wizardsardine.
- Asher GenootCEO, Director · Hut 8Chief executive officer of Hut 8 Corp., a co-founder of the US Bitcoin Corp business that merged into it, and executive chairman of American Bitcoin.
- Ava ChowMaintainer, Engineer · Bitcoin CoreA Bitcoin Core maintainer focused on wallet functionality and interoperability, and a maintainer of the Hardware Wallet Interface project.
- Ben ArcPseudonymous developer · LNbitsThe name publicly used by the developer credited with LNbits, the open-source Lightning accounts system.
- Brandon GreenChief Executive Officer · Bitcoin MagazineChief Executive Officer of BTC Inc, the company that publishes Bitcoin Magazine and runs the Bitcoin Conference series.
- Brian ArmstrongCo-founder, CEO · CoinbaseCo-founder and chief executive officer of Coinbase Global, Inc., as recorded in the company's annual report on Form 10-K.
- Cameron WinklevossCo-founder, President · GeminiCo-founder and president of Gemini, the New York-regulated crypto exchange and custodian.
- Carla Kirk-CohenExecutive Director, Software Engineer · Chaincode LabsExecutive Director of Chaincode Labs and a software engineer working on the Lightning Network specification.
- Changpeng ZhaoFounder, CEO · BinanceFounder of Binance and its chief executive until November 2023, when he pleaded guilty to a US anti-money-laundering charge and resigned.
- Charles CascarillaCo-founder, CEO · PaxosCo-founder and chief executive of Paxos, the regulated trust company and stablecoin issuer established in 2012.
- Cody CarboneChief Executive Officer · The Digital ChamberChief Executive Officer of The Digital Chamber, the Washington trade association for digital asset companies.
- Cory FieldsEngineer · Bitcoin CoreA long-time Bitcoin Core developer focused on the build system, continuous integration, code security and maintainability, and a member of Brink's grant committee.
- Cory KlippstenFounder, CEO · Swan BitcoinFounder and chief executive of Swan Bitcoin, and an executive officer and director of its parent entity Electric Solidus, Inc.
- Craig RawDeveloper, Maintainer · Sparrow WalletThe developer of Sparrow Wallet, a desktop Bitcoin wallet built on PSBT and open standards.
- David BaileyCo-founder, Chairman · Bitcoin MagazineCo-founder and chairman of BTC Inc, the publisher of Bitcoin Magazine, and chairman and chief executive of its listed parent Nakamoto Inc.
- David ZellPresident · Bitcoin Policy InstitutePresident of the Bitcoin Policy Institute, which he has led since its establishment in 2021.
- Dhruv BansalCo-founder, Chief Strategy Officer · UnchainedCo-founder and Chief Strategy Officer of Unchained, and a contributor to its open source multisig coordinator Caravan.
- Elizabeth StarkCEO, Co-founder · Lightning LabsCo-founder and CEO of Lightning Labs, the company that develops the Lightning Network Daemon.
- Emily KeeDirector of Operations · BrinkDirector of Operations at Brink and the office manager for its London office, previously working on projects for Chaincode Labs and Qala.
- Erik VoorheesFounder, CEO · ShapeShiftFounder and chief executive of ShapeShift, who announced in 2021 that the company would dissolve itself and hand governance to holders of its FOX token.
- Evan KaloudisFounder, Engineer · ZEUSThe author of ZEUS, the AGPL-licensed mobile Bitcoin and Lightning wallet and remote node manager.
- Fabian JahrEngineer · Bitcoin CoreA Bitcoin Core contributor funded by Brink, working on Schnorr-enabled innovations, in-depth review of major proposals, ASMap and code hosting alternatives.
- Fabrice DrouinCo-founder, Engineer · ACINQA co-founder of ACINQ and a developer of Eclair, the company's Scala implementation of the Lightning Network.
- Fred ThielCEO, Chairman · MARA HoldingsChairman and chief executive officer of MARA Holdings, the Nasdaq-listed bitcoin miner formerly named Marathon Digital Holdings.
- Gerald CottenCo-founder, CEO · QuadrigaCXCo-founder, chief executive and sole director of QuadrigaCX, whose conduct Ontario Securities Commission staff concluded caused most of the exchange's asset shortfall.
- Graham KrizekCEO, Founder · VoltageFounder and CEO of Voltage, the Kansas company that runs Lightning nodes and payment infrastructure for businesses.
- Grant McCartyExecutive Director · Bitcoin Policy InstituteExecutive Director of the Bitcoin Policy Institute, previously co-director of policy and public affairs at Bitcoin Magazine.
- Hennadii StepanovMaintainer, Engineer · Bitcoin CoreA Bitcoin Core contributor since 2018, funded by Brink, who maintains the Bitcoin Core graphical interface and translations.
- Hermann Buhr VivierFounder · Bitcoin EkasiFounder of Bitcoin Ekasi and co-founder of The Surfer Kids, the registered South African non-profit the project runs through.
- Jack DorseyBlock Head, Chairperson · Block, Inc.Block Head and Chairperson of Block, Inc., and the principal executive officer who signs its annual report.
- Jack MallersCEO, Founder · StrikeFounder of Strike and an executive officer and director of Zap Solutions Holdings, the Delaware company behind it.
- Jacob JohnstonCo-founder, VP of Operations · Foundation DevicesCo-founder of Foundation Devices and its VP of Operations, covering supply chain, manufacturing and operational infrastructure.
- Jameson LoppCo-founder, Chief Security Officer · CasaCo-founder and Chief Security Officer of Casa, and a long-running writer and archivist on Bitcoin self-custody and key management.
- Jan ČapekCo-founder, Managing Director · BraiinsCo-founder of Braiins, a first managing director of Braiins Systems s.r.o., and a co-author of the Stratum V2 mining protocol.
- Jason LesCEO, Director · Riot PlatformsChief executive officer of Riot Platforms and a member of its board since 2017.
- Jeremias KangasFounder · LocalBitcoinsFounder of LocalBitcoins, the Finnish peer-to-peer bitcoin marketplace he started in 2012 and which stopped trading in February 2023.
- Jerry BritoCo-founder, Board member · Coin CenterCo-founder of Coin Center and its executive director through the organisation's first decade, now on its board.
- Joe KellyCo-founder, CEO · UnchainedCo-founder and chief executive of Unchained, the Austin company offering bitcoin-backed loans and retirement accounts on a multi-key vault structure.
- Jonathan BierBoard member, Author · BrinkA director on Brink's board, author of two books on Bitcoin history, and previously an administrator of the BitMEX Open Source Developer Grant Program.
- Keagan McClellandCo-founder · Start9Co-founder of Start9, named as such on the company's own news page, and the registered agent of the predecessor Start9 Labs, LLC.
- Ken CarpenterCo-founder, CTO · Foundation DevicesCo-founder and chief technology officer of Foundation Devices, responsible for hardware engineering and firmware architecture.
- Luke ChildsCo-founder · UmbrelCo-founder of Umbrel, named as such in the project's own seed round announcement.
- Luke DashjrMaintainer, Developer, CTO · Bitcoin KnotsThe lead maintainer of Bitcoin Knots, a long-standing Bitcoin Core contributor, and chairman and chief technology officer of the mining pool Ocean.
- Manfred KarrerFounder · BisqThe name under which Bisq's founder published, who dissolved the founder role and stepped back from the project when the Bisq DAO went live in 2019.
- Marek PalatinusCo-founder, CEO · SatoshiLabsCo-founder of SatoshiLabs and Trezor, publicly known as Slush, and the operator of the first Bitcoin mining pool.
- Mark KarpelèsChief Executive Officer, Representative Director · Mt. GoxRepresentative director and chief executive of MtGox Co., Ltd., the Tokyo bitcoin exchange that filed for civil rehabilitation in February 2014.
- Martin ZumsandeEngineer · Bitcoin CoreA Bitcoin Core contributor since 2019, funded by Brink for work on the peer-to-peer network, address relay, initial block download and block validation.
- Matt HillCo-founder, CEO · Start9Chief executive of Start9 Labs, Inc., and its registered agent in the Colorado business register.
- Matthew ZipkinEngineer · Bitcoin CoreA Chaincode Labs engineer, previously a maintainer of the Bcoin Bitcoin library and the builder of the Bitcoin Block Clock node visualisers.
- Mayank ChhabraCo-founder · UmbrelCo-founder of Umbrel, who announced the project's seed round on its own community forum in October 2021.
- Michael FordMaintainer, Engineer · Bitcoin CoreA Bitcoin Core maintainer funded by Brink, working on the build system, security and dependency reduction.
- Michael SaylorFounder, Executive Chairman · StrategyFounder of MicroStrategy, now Strategy, and its executive chairman, having previously served as chief executive from the company's founding in 1989.
- Michael ShaulovCo-founder, CEO · FireblocksCo-founder and chief executive of Fireblocks, the digital asset infrastructure company founded in 2018.
- Mike BelsheCo-founder, CEO, CTO, Director · BitGoCo-founder of BitGo and its chief executive, chief technology officer, president and a director of the listed holding company.
- Mike ColyerCEO · FoundryFounding chief executive of Foundry, the Digital Currency Group company that operates Foundry USA Pool.
- Mike PetersonCo-founder · Bitcoin BeachCo-founder of Bitcoin Beach in El Zonte, El Salvador, and author of the proposal that turned an anonymous donation into a village-scale experiment.
- Mike SchmidtCo-founder, Executive Director · Bitcoin OptechCo-founder and Executive Director of Brink, and a contributor to the Bitcoin Optech newsletter and workshops.
- Nangeng ZhangFounder, CEO, Chairman · CanaanFounding member, chairman and chief executive officer of Canaan, and the engineer whose team shipped the first batch of ASIC bitcoin mining machines in January 2013.
- Nathan McCauleyCo-founder, CEO · Anchorage DigitalCo-founder and chief executive of Anchorage Digital, and the applicant named on the OCC letter granting its national trust bank charter.
- Neha NarulaDirector, Researcher · MIT Digital Currency InitiativeDirector of the MIT Digital Currency Initiative, the research group at the MIT Media Lab that employs Bitcoin Core developers and studies both decentralised and central bank money.
- Nick HansenFounder, CEO · Luxor TechnologyFounder and chief executive officer of Luxor Technology Corporation, the mining pool, firmware and hashrate derivatives company.
- Nick NeumanCo-founder, CEO · CasaCo-founder and chief executive of Casa, the US company selling multi-key custody and inheritance tooling.
- Nicolas BurteyCEO, Founder · GaloyFounder and CEO of Galoy, and the developer whose wallet became the Bitcoin Beach Wallet in El Zonte and later Blink.
- Nicolas DorierFounder, Engineer · BTCPay ServerFounder of BTCPay Server, the self-hosted and non-custodial Bitcoin payment processor, and the tie-breaking vote in its Foundation.
- Niklas GöggeSecurity Researcher, Engineer · Bitcoin CoreA Bitcoin security researcher funded by Brink, working on the peer-to-peer code and on Bitcoin Core's testing and fuzzing infrastructure.
- Olaoluwa OsuntokunCTO, Co-founder, Engineer · Lightning LabsCo-founder and CTO of Lightning Labs, and a lead developer of the Lightning Network Daemon.
- Paolo ArdoinoCEO, CTO · BitfinexChief executive officer of Tether and chief technology officer of Bitfinex, according to both companies' own leadership pages.
- Pavel MoravecCo-founder, Managing Director · BraiinsCo-founder of Braiins, a first managing director of Braiins Systems s.r.o., and a co-author of the Stratum V2 mining protocol.
- Pavol RusnákCo-founder, CTO · SatoshiLabsCo-founder of SatoshiLabs, publicly known as Stick, and a contributor to the seed phrase and derivation path standards the hardware wallet industry uses.
- Perianne BoringFounder · The Digital ChamberFounder of the Chamber of Digital Commerce, now The Digital Chamber, and its chief executive for the first decade of its existence.
- Peter MintzbergCEO, Director · Grayscale InvestmentsChief executive officer and a director of Grayscale Investments, the asset manager behind the Grayscale Bitcoin Trust ETF.
- Peter Van ValkenburghExecutive Director · Coin CenterExecutive Director of Coin Center, previously its research director, and the author of much of its argument that publishing software is protected speech.
- Phong LePresident, CEO, Director · StrategyPresident, chief executive officer and a director of Strategy, the company formerly named MicroStrategy.
- Pierre-Marie PadiouPresident, Co-founder · ACINQCo-founder of ACINQ and its président under French company law, and a contributor to the Eclair Lightning implementation.
- Pieter WuilleEngineer, Cryptographer · Bitcoin CoreA Bitcoin Core engineer at Chaincode Labs who created libsecp256k1 and authored or co-authored sixteen Bitcoin Improvement Proposals.
- Roman MartinezCo-founder, Community lead · Bitcoin BeachCo-founder of Bitcoin Beach and the community leader who did much of the on-the-ground work of onboarding merchants in El Zonte.
- Ross StevensFounder, Executive Chairman · NYDIGFounder and executive chairman of NYDIG, and founder and chief executive of its parent, Stone Ridge Holdings Group.
- Russ YanofskyEngineer · Bitcoin CoreA Chaincode Labs engineer whose long-running work separates Bitcoin Core's node, wallet and GUI components.
- S. Matthew SchultzCo-founder, CEO, Chairman · CleanSparkCo-founder, chairman and chief executive officer of CleanSpark, who led it as an energy company before it became a bitcoin miner and returned as chief executive in 2025.
- Samuel Bankman-FriedFounder, CEO · FTXFounder and chief executive of FTX, convicted in 2023 on seven counts of fraud and conspiracy and sentenced to 25 years in prison.
- Satoshi NakamotoPseudonymous author · Bitcoin CoreThe pseudonym under which the Bitcoin whitepaper and the original Bitcoin client were published. The identity behind it is unknown.
- Seamus RoccaCEO, Director · Xapo BankDirector and chief executive of Xapo Bank Limited, the Gibraltar credit institution, which he joined in 2017.
- Sebastian FalbesonerEngineer · Bitcoin CoreA Bitcoin Core contributor funded by Brink for code review, test coverage and work on the peer-to-peer and wallet code.
- Sergej KotliarCEO, Founder · BitrefillFounder and CEO of Bitrefill, the Swedish company selling gift cards, phone top-ups and bill payments for bitcoin.
- Steve MyersPresident, Engineer · Bitcoin Dev KitPresident of the Bitcoin Dev Kit Foundation and a board director, and a long-time contributor to the BDK libraries.
- Suhas DaftuarCo-founder · Bitcoin CoreCo-founder of Chaincode Labs and a Bitcoin Core contributor, previously a co-founder of the trading firm Hudson River Trading.
- Thomas VoegtlinCreator, Lead developer, Founder · ElectrumCreator of the Electrum wallet in 2011 and founder of Electrum Technologies GmbH, the Berlin company that distributes it.
- Thor HalvorssenFounder, Chief Executive Officer · Human Rights FoundationFounder and chief executive of the Human Rights Foundation, the organisation that runs the Bitcoin Development Fund.
- Tony GiorgioCo-founder, CEO, CTO · Mutiny WalletCo-founder of Mutiny Wallet, who was its chief executive until announcing the wallet's shutdown in August 2024 and then moved to chief technology officer.
- Tyler WinklevossCo-founder, CEO · GeminiCo-founder and chief executive of Gemini, the New York-regulated crypto exchange and custodian.
- Val VavilovCo-founder, CEO, Chairman · Bitfury GroupCo-founder, chief executive and chairman of the Bitfury Group, and the individual named in US filings at the top of its ownership chain.
- Wences CasaresFounder · Xapo BankFounder of Xapo, the bitcoin wallet and vault business that became Xapo Bank, and the company's chief executive through its 2019 sale of institutional custody to Coinbase.
- Yusuf NessaryCo-founder · Built With Bitcoin FoundationCo-founder of the Built With Bitcoin Foundation, which funded schools, water projects and farms with bitcoin donations.
- Zach HerbertCo-founder, CEO · Foundation DevicesCo-founder and chief executive of Foundation Devices, the Boston company that makes the Passport signing device.