Jihan Wu (1986–)

In 2011, a Chinese economics-and-psychology graduate named Jihan Wu translated Satoshi’s Bitcoin whitepaper into Chinese. Two years later he co-founded Bitmain Technologies with chip designer Micree Zhan, and by 2015–2018 Bitmain had become the dominant Bitcoin ASIC manufacturer, controlling a majority share of new mining-hardware shipments. Bitmain also operated AntPool, the largest Bitcoin mining pool by hashrate through the same period. On August 1, 2017, Wu committed Bitmain-aligned hashpower to the Bitcoin Cash hard fork — a critical factor in BCH maintaining block production through the early difficulty-tuning days.

Jihan Wu (吴忌寒; born 1986 in Chongqing, China) is a Chinese entrepreneur.

Bitcoin entry and whitepaper translation (2011)

Wu earned degrees in economics and psychology at Peking University in 2009 before working as a financial analyst. He encountered Bitcoin in 2011 and, recognizing the lack of accessible Chinese-language documentation, produced a Chinese translation of Satoshi’s Bitcoin whitepaper that circulated widely in early Chinese Bitcoin communities. The translation predates the founding of major Chinese Bitcoin exchanges and was an early contribution to the Chinese-language Bitcoin information ecosystem.

Bitmain (2013–2018)

In 2013 Wu co-founded Bitmain Technologies with Micree Zhan, a chip designer. Bitmain’s first commercial product — the Antminer S1 ASIC, released in late 2013 — entered a market dominated by Avalon and BFL. Through subsequent generations (S3, S5, S7, S9) Bitmain became the dominant Bitcoin ASIC manufacturer of the 2015–2018 era, controlling a majority share of new mining hardware shipments at its peak. Bitmain also operated AntPool, which became the largest Bitcoin mining pool by hashrate during the same period. Bitmain’s hardware dominance extended beyond Bitcoin’s SHA-256 algorithm: its Antminer L-series Scrypt miners, beginning with the L3 in 2017, further undermined the ASIC-resistance design that Litecoin had been built around.

Wu served as the public-facing co-CEO, while Zhan handled the chip-engineering side. The two co-founders’ division of responsibilities — Wu external/business/community, Zhan internal/engineering — would become structurally significant in the later leadership conflict.

Block-size war and Bitcoin Cash (2015–2017)

Wu was a vocal proponent of larger Bitcoin blocks throughout the 2015–2017 block-size war. He signed the New York Agreement (May 2017), and months before the SegWit2x compromise collapsed, committed Bitmain-aligned hashpower to the Bitcoin Cash fork on August 1, 2017. The fork’s first block was mined by ViaBTC, a pool Bitmain had invested in; Wu denied that he or Bitmain had so much influence over the fork. The SegWit2x cancellation announcement itself was authored by fellow NYA signatory Mike Belshe, the BitGo co-founder and CEO, whose biography entry names Wu among its co-signatories.

Bitmain’s hashpower was a critical factor in BCH’s ability to maintain block production through the early days of the split when the chain’s difficulty algorithm was still being tuned. The three co-founders divided the labor of launching the new chain: Wu supplied the hashpower, Roger Ver handled public branding, and Amaury Séchet implemented the protocol.

Wu’s Bitmain, like Ver’s bitcoin.com, stood to gain from more on-chain transactions (see the analysis of the “Blockstream controls Bitcoin” charge). The commercial-interest argument the large-block side made against Blockstream applies just as readily to its own most prominent backers.

Bitmain leadership conflict and post-2018 ventures

Through 2018-2019 a public conflict developed between Wu and Zhan over Bitmain’s strategic direction (in particular its expansion into AI chips and the abortive 2018 Hong Kong IPO). The dispute briefly produced parallel leadership claims and corporate-governance disputes that played out in Chinese and international press. The eventual resolution — after multiple rounds of management changes — left Zhan in control of Bitmain proper while Wu moved on to separate ventures.

Post-Bitmain, Wu founded Matrixport (2019, a Bitcoin financial services / custody platform) and Bitdeer (originally a Bitmain-internal cloud-mining service, spun off in 2021 when Wu and Zhan settled their dispute and Wu left Bitmain). Both remain Bitcoin-centric businesses; Wu continues to be active in Bitcoin mining and adjacent infrastructure.

Career timeline

Significance to Bitcoin

Wu’s record matters here for three reasons. First, the 2011 Chinese whitepaper translation is a foundational document in the Chinese-language Bitcoin community.

Second, Bitmain’s 2014–2018 dominance of ASIC manufacturing made Wu one of the most consequential individuals in Bitcoin mining-economics during that period; the geographic concentration of mining in China during the same years is partly downstream of Bitmain’s customer base.

Third, his commitment of hashpower to Bitcoin Cash at launch was structurally necessary for BCH to survive its first weeks; without large early hashpower, the chain would have been vulnerable to reorganization attacks during the difficulty-adjustment ramp.