Category: People

Bitcoin ABC lead developer; launched Bitcoin Cash in 2017 and eCash (XEC) in 2020.

Bitcoin Core contributor (GitHub darosior) and lead author of BIP-54, the Consensus Cleanup soft fork that fixes the timewarp bug.

Creator of Litecoin (2011), former Coinbase engineering lead, managing director of the Litecoin Foundation.

Author of BIP-119 (CHECKTEMPLATEVERIFY), co-founder of the MIT Digital Currency Initiative and Scaling Bitcoin, creator of Sapio and Judica, now building Char.

Start9 co-founder who left to work on Sapio at Judica, later worked at Lightning Labs, and now verifies Bitcoin consensus code in Lean.

Signed the 2016 Hong Kong Roundtable statement as AntPool's manager; a Kevin Pan (Zhibiao Pan) later founded the Poolin mining pool.

Bitcoin Knots maintainer; central figure of BIP-110 and the 2026 BLAKE2b fork.

LayerTwo Labs CEO, author of the drivechain proposals BIP-300/301, launcher of the eCash (ECX) fork.

Author of the BitVM whitepaper, which verifies Turing-complete contracts on Bitcoin without a consensus change; a repeat Bitcoin Takeover guest.

Early Bitcoin investor and leading Bitcoin Cash advocate; co-author of Hijacking Bitcoin (2024).

Satoshi Nakamoto's successor as Bitcoin's lead developer, author of BIP-101 and BIP-109, and later a casualty of Craig Wright's claim.

British cryptographer who invented Hashcash, co-founded Blockstream, and opposed Bitcoin XT's hard fork.

Australian computer scientist who claimed to be Satoshi Nakamoto; the UK High Court ruled in 2024 that he is not, and found he forged documents.

Co-founder of Bitmain, a signer of the 2016 Hong Kong Roundtable statement whose company backed the 2017 New York Agreement, and a leading backer of Bitcoin Cash.

Creator of Ordinals and inscriptions and the ord software; a Bitcoin Takeover guest in February 2023.

Former Google engineer, bitcoinj author and co-creator of Bitcoin XT, who declared Bitcoin a failed experiment in January 2016.

Co-founder and Chief Security Officer of Casa, writer of Cypherpunk Cogitations, and a speaker at events across the fork divide.

Early Bitcoin Core contributor who proposed a bigger block in 2010 and later led the engineering of SegWit2x.

Co-founder and CEO of BTC China, later BTCC, a Hong Kong Roundtable signatory, and Charlie Lee's brother.

Bitcoin developer and co-author of the SegWit BIPs 141 and 144 and of the CHECKSEQUENCEVERIFY proposal, and an early Ethereum participant.

Long-time Bitcoin developer: author of compact block relay (BIP-152), co-author of BIP-54 Consensus Cleanup, and a signer of the 2016 Hong Kong Roundtable statement.

Bitcoin Core developer (sipa), co-founder of Blockstream, and author or co-author of the BIPs behind SegWit, version bits and Taproot.

Co-founder of F2Pool, signer of the 2016 Hong Kong Roundtable statement, founder of Stakefish, and commander of the 2025 Fram2 polar spaceflight.

Bitcoin Core's lead maintainer from 2014 under the name Wladimir van der Laan, chosen by Gavin Andresen; began handing off the role in 2021 and gave up merge rights in 2023. The laanwj profile now shows the name Mara van der Laan.

Self-described Bitcoin historian on the BSV side, CoinGeek author and GorillaPool operator, interviewed on Bitcoin Takeover S17 E39.

Former Ethereum Foundation C++ developer and Executive Director of the ETC Cooperative (2019–2024); a 2026 Bitcoin Takeover guest on Ethereum Classic and Bitcoin forks.

Bitcoin Core developer behind CoinJoin and a Blockstream co-founder, central to the SegWit-first capacity roadmap.

Author of BIP-91, the reduced-threshold SegWit activation that locked in in July 2017.

Developer who wrote Bitcore at BitPay and ran Money Button from 2015 to 2021; after the COPA trial, by Vlad's account, he was among those who said they had been fooled by Craig Wright. Later built EarthBucks.

Co-author of SegWit's BIP-141 and BIP-143, author of several other SegWit-era BIPs, and a 2016 Hong Kong Roundtable signer.

Bitcoin developer behind CHECKLOCKTIMEVERIFY and replace-by-fee, a Hong Kong Roundtable signer and a SegWit2x opponent.

The man behind BitMEX Research and author of The Blocksize War (2021), the standard small-block-side history of the war.

Chief scientist at Bitcoin Unlimited and author of the 2015 paper arguing that a fee market exists without a block size limit.

Bodog founder and the main financial backer of the BSV camp: linked to Craig Wright from 2016, owner of CoinGeek, and controlling owner of nChain from 2023.

Founder and CEO of ViaBTC, who wrote the pool's code in May 2016; ViaBTC suggested the name Bitcoin Cash and mined its first block.

BTCC's chief operating officer at the 2016 Hong Kong Roundtable and now CEO of JAN3; his Blockstream years are not yet sourced here.

Chinese Bitcoin investor and miner who announced the Bitcoin God fork for Christmas 2017 and later promoted EthereumPoW.