Zooko Wilcox-O'Hearn

Zooko Wilcox-O'Hearn (born Bryce Wilcox May 13, 1974 in Phoenix, Arizona), is an American Colorado-based computer security specialist, cypherpunk, and CEO of the Electric Coin Company (ECC), a for-profit company leading the development of Zcash.[1]

Zooko Wilcox-O'Hearn
Zooko Wilcox-O'Hearn at 34C3 in 2017
Bryce Wilcox

May 13, 1974
Occupationpeer-to-peer hacker, cypherpunk
EmployerLeast Authority Enterprises
  • Ron Wilcox (father)
  • Olene Harris (mother)
Websitezooko on Twitter


He is known for the Tahoe Least-Authority File Store (or Tahoe-LAFS), a secure, decentralized, fault-tolerant filesystem[2][3] released under GPL and the TGPPL licenses. He is the creator of the Transitive Grace Period Public Licence (TGPPL).[4]

Wilcox-O'Hearn is the designer of multiple network protocols that incorporate concepts such as self-contained economies and secure reputation systems.[5] He is a member of the development team of ZRTP[6] and the BLAKE2 cryptographic hash function.[7][8]

Zooko's triangle is named after Wilcox-O'Hearn, who described the schema that relates three desirable properties of identifiers in 2001.[9]

He is founder and CEO of Least Authority Enterprises in Boulder, Colorado.[1][10][11]

He was a developer of the MojoNation[12] P2P system and lead developer of the follow-on Mnet network,[13] and a developer at SimpleGeo.[14]

Furthermore, Zooko is part of a founding team that launched Zcash in 2016.[15]


  1. DJ Pangburn (2013). "Introducing the PRISM-Proof Storage Device". motherboard. Vice. Archived from the original on 19 August 2013.
  2. Wilcox-O'Hearn, Zooko, ANNOUNCING allmydata.org "Tahoe", the Least-Authority Filesystem, v1.3, retrieved 20 April 2009
  3. "Why Whack-a-Tard won't save music". The Register. 22 April 2009.
  4. Yee, Ka-Ping (2008). "An Open Source License Idea" (PDF).
  5. Peter Ferne (21 November 2008). "Collaborative Filtering and Social Capital".
  6. zfoneproject (2010). "About The Zfone™ Project". Retrieved 31 December 2017.
  7. BLAKE2 designers
  8. Jean-Philippe Aumasson, Samuel Neves, Zooko Wilcox-O’Hearn, Christian Winnerlein (2013). "BLAKE2: simpler, smaller, fast as MD5" (PDF). Applied Cryptography and Network Security. Lecture Notes in Computer Science. 7954. IACR. pp. 119–135. doi:10.1007/978-3-642-38980-1_8. ISBN 978-3-642-38979-5.CS1 maint: uses authors parameter (link)
  9. Ferdous, Md. Sadek; Jøsang, Audun; Singh, Kuldeep; Borgaonkar, Ravishankar (2009). "Security Usability of Petname Systems" (PDF). Identity and Privacy in the Internet Age. Lecture Notes in Computer Science. 5838. pp. 44–59. CiteSeerX doi:10.1007/978-3-642-04766-4_4. ISBN 978-3-642-04765-7.
  10. "About Us". Least Authority Enterprises. 2017. moved to Berlin in 2016
  11. "Zooko Wilcox-O'Hearn". identi.ca. 12 June 2013.
  12. "Get Your Music Mojo Working". Wired. 29 July 2000.
  13. "Cutting edge P2P, crypto comes to your PC". The Register. 25 February 2002.
  14. "Post-Funding, SimpleGeo Pounces On A Six Aparter, A Hacker, And Beta Keys". TechCrunch. 14 December 2009.
  15. Zooko (29 December 2017). "cryptocurrencies, smart contracts, etc.: revolutionary tech?". 34C3 (video). media.ccc.de. YouTube OSs3wzoVpl0. short answer: Yes!

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