Key People

Inventor of Hashcash, the proof-of-work system cited in Satoshi's whitepaper. Co-founded Blockstream and has been a leading voice in Bitcoin development since the earliest days.

Lead developer of Bitcoin ABC, the software implementation that executed the Bitcoin Cash hard fork in August 2017. Later forked away from BCH himself to create eCash after disputes with the BCH community.

Canadian billionaire and online gambling entrepreneur who bankrolled Bitcoin SV through his CoinGeek mining operation and conferences. A close ally of Craig Wright in the 2018 hash war against Bitcoin ABC.

Software engineer who created the Ordinals protocol in January 2023, enabling arbitrary data to be inscribed directly on individual satoshis. The resulting inscription boom flooded the mempool and reignited debate over Bitcoin's block space.

Australian computer scientist who claims to be Satoshi Nakamoto — a claim overwhelmingly rejected by the Bitcoin community. Led the Bitcoin SV fork from Bitcoin Cash in 2018 and pursued aggressive legal action against critics.

Bitcoin Core contributor and co-founder of Ciphrex. A leading voice in the UASF (User-Activated Soft Fork) movement that forced miner signaling for SegWit activation in 2017.

Succeeded Satoshi as lead Bitcoin developer. Received Satoshi's final email in April 2011 and presented Bitcoin to the CIA. Later founded the Bitcoin Foundation.

Cryptographer and cypherpunk who received the first Bitcoin transaction from Satoshi. Ran the first non-Satoshi node and famously tweeted 'Running bitcoin' on January 11, 2009.

Founder and CEO of Strike, the Lightning-native payments company built on Bitcoin. At Bitcoin 2021 in Miami, he announced El Salvador's Bitcoin Law live on stage with President Nayib Bukele — turning Lightning from a developer tool into a nation-state narrative overnight.

Early Bitcoin Core developer and former Red Hat engineer. On January 30, 2013, he became the first person to receive a commercial Bitcoin ASIC miner — Canaan's Avalon — validating the ASIC mining era.

Co-founder of Bitmain, the world's largest Bitcoin mining hardware manufacturer. His mining pools signaled for bigger blocks and supported the Bitcoin Cash fork, making him one of the most influential figures in the block size war.

Co-author of the Lightning Network whitepaper (2016) with Thaddeus Dryja. His proposal for bidirectional payment channels became the foundation for Bitcoin's primary Layer 2 scaling solution.

Bitcoin developer who made history on May 22, 2010 by paying 10,000 BTC for two pizzas — the first documented real-world Bitcoin purchase. Bitcoin Pizza Day is celebrated annually in his honor.

CEO of Mt. Gox during its rise and catastrophic collapse. The exchange once handled 70% of all Bitcoin trades before filing for bankruptcy in 2014 with 850,000 BTC missing — the defining exchange failure of Bitcoin's early years.

CEO of MicroStrategy (now Strategy) who pioneered the corporate Bitcoin treasury strategy in August 2020, purchasing billions in BTC and becoming Bitcoin's most vocal corporate advocate.

Creator of Casascius physical bitcoins — brass, silver, and gold coins loaded with real BTC behind tamper-evident holograms. His 2011–2013 series made Bitcoin tangible for collectors and gift-givers until FinCEN ordered him to cease production. Surviving unpeeled Casascius coins remain legendary artifacts.

Designer of the Icarus FPGA board — one of the most respected pieces of early Bitcoin mining hardware. His reputation on Bitcointalk helped fund confidence in Canaan Creative's Avalon, the world's first commercial Bitcoin ASIC.

Bitcoin Core developer who authored BIP 141 (SegWit) and BIP 341 (Taproot). One of the most prolific and respected contributors to Bitcoin's protocol.

Early Bitcoin evangelist and investor known as 'Bitcoin Jesus.' Became the most visible advocate for bigger blocks and led the push for Bitcoin Cash in 2017, arguing that on-chain scaling was essential for peer-to-peer cash.

Creator of Silk Road, the darknet marketplace that demonstrated Bitcoin's censorship resistance. Arrested in October 2013 and sentenced to life in prison.

The pseudonymous creator of Bitcoin. Published the whitepaper on October 31, 2008, mined the genesis block on January 3, 2009, and guided early development before disappearing in 2011. Their identity remains unknown.

Co-author of the Lightning Network whitepaper and former MIT Digital Currency Initiative researcher. Developed the cryptographic primitives for trustless off-chain Bitcoin payments.