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Alejandro Regojo

Alejandro Regojo ("Reg0x") is a Spanish economist and entrepreneur, co-founder in 2017 of Bitcoin Gold, the Bitcoin fork designed to bring mining back to GPUs. Active in the Ethereum and Bitcoin ecosystem since 2016, he keeps a low public profile today.

Riccardo CuratoloBy Riccardo Curatolo 2 min read How we work
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Who he is

Alejandro Regojo, known online as "Reg0x", is an economist and entrepreneur from Vigo (Spain), active in developing services and products around Ethereum and Bitcoin since 2016. His name is tied above all to Bitcoin Gold (BTG), the Bitcoin fork launched in October 2017 that replaced the SHA-256 mining algorithm with Equihash to make it ASIC-resistant and reopen mining to individual users' graphics cards. He has taken part in open source initiatives linked to Bitcoin adoption (including BTCPay) and in 2017 was the youngest speaker at the Horasis summit in Kyiv, considered the "World Economic Forum of technology". He also appears as a contributor in the blockchain docuseries "Crossing the Yellow Blocks", distributed on Apple TV+ and Google Play.

Current role

Recent public traces of Regojo are scarce: he is credited with founding Solidity Jobs (an Andorran blockchain consultancy) and the S-Token protocol for security tokens, but we were unable to find up-to-date independent confirmation of these activities, nor a documented current operational role (September 2026). Co-creating Bitcoin Gold remains an established historical fact, but it does not describe a current occupation: the BTG project is today run by a community and its market relevance is much reduced.

Career path

  • 2016-2017 — First projects and services in the Ethereum ecosystem; in October 2017 he co-founds Bitcoin Gold (BTG), a Bitcoin fork with "GPU-friendly" mining.
  • 2017-2018 — Public face of BTG at international conferences; youngest speaker at the Horasis summit in Kyiv (2017); involvement in open source initiatives such as BTCPay.
  • Later years — Blockchain consulting work (his name is linked to Solidity Jobs, in Andorra, an activity without independent confirmation) and participation in the docuseries "Crossing the Yellow Blocks".

Recent developments and controversies

  • Bitcoin Gold after launch: the project suffered two documented 51% attacks (May 2018, with double spends against several exchanges, and January 2020) and progressively lost market relevance and listings. There is no personal responsibility on Regojo's part in these events: they were network vulnerabilities.
  • There are no legal controversies or proceedings against Regojo. His public presence has thinned out considerably in recent years.

FAQ

Who is Reg0x? It is the pseudonym of Alejandro Regojo, a Spanish economist and entrepreneur who co-founded Bitcoin Gold in 2017 and has been active in the blockchain ecosystem since 2016.

Does Bitcoin Gold still exist? Yes, the BTG network is still active but has far less relevance than in 2017-2018, following two 51% attacks (2018 and 2020) and the loss of several exchange listings.

See also

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