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21 Inc.
Founder(s)Matthew Pauker, Balaji Srinivasan
21 (formerly 21e6) is a Bitcoin startup founded amidst the November 2013 bubble. In March 2015, they announced having raised $116 million in venture capital.[1]


Early history and secrecy

21 was founded in 2013 as 21e6, with the name being a reference to the controlled supply cap of the bitcoin economy.[1] In November, it was the subject of intense speculation after revealing $5 million in venture capital from a regulatory filing.[1] Co-founder Balaji Srinivasan stated that the startup's secrecy was "solely for pragmatic reasons – we didn’t have anything to say to the world,"[1] and they would not reveal their plans until May 2015.[2]

Venture capital

By March 2015, 21 raised over $100 million in venture capital from numerous investors including Qualcomm Inc.,[1][3][2] RRE Ventures,[1] Yuan Capital,[1] Cisco,[3][2] Andreessen Horowitz,[1] Khosla Ventures,[1] Data Collective,[1] PayPal co-founders Peter Thiel[1] and Max Levchin,[1] eBay Inc. co-founder Jeff Skoll,[1][2] Dropbox Inc. CEO Drew Houston,[1] Expedia Inc. CEO Dara Khosrowshahi,[1][2] Zynga Inc. co-founder Mark Pincus,[1][2] and former ARM Holdings PLC CSO Mark Templeton.[3][2]

Embedded mining


  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 Casey, Michael (10 March 2015). "Secretive Bitcoin Startup 21 Reveals Record Funds, Hints at Mass Consumer Play". Wall Street Journal. http://blogs.wsj.com/digits/2015/03/10/secretive-bitcoin-startup-21-reveals-record-funds-hints-at-mass-consumer-play/. Retrieved 11 March 2015.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Casey, Michael (18 May 2015). "Bitcoin Startup 21 Unveils Product Plan: Embeddable Chips for Smartphones". Wall Street Journal. http://blogs.wsj.com/digits/2015/05/18/bitcoin-startup-21-unveils-product-plan-embeddable-mining-chips/. Retrieved 21 July 2015.
  3. 3.0 3.1 3.2 21.co investors tweet

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