Justin Kan (born July 16, 1983) is an American internet entrepreneur and investor. He is the co-founder of live video platforms
Justin.tv and
Twitch, as well as the mobile social video application
Socialcam. He was also the co-founder and former CEO of law-tech company Atrium before it was shut down in March 2020. In 2021, he launched NFT marketplace Fractal, which was renamed to Stash in 2024.
He was a partner at
Silicon Valley
Silicon Valley is a region in Northern California that is a global center for high technology and innovation. Located in the southern part of the San Francisco Bay Area, it corresponds roughly to the geographical area of the Santa Clara Valley ...
incubator
Y Combinator
Y Combinator, LLC (YC) is an American technology startup accelerator and venture capital firm launched in March 2005 which has been used to launch more than 5,000 companies. The accelerator program started in Boston and Mountain View, Californi ...
.
He gained widespread attention for his "
lifecasting" experiment on Justin.tv, where he attempted to broadcast his entire life. Kan also started a
Reddit
Reddit ( ) is an American Proprietary software, proprietary social news news aggregator, aggregation and Internet forum, forum Social media, social media platform. Registered users (commonly referred to as "redditors") submit content to the ...
-style electronic music discovery platform, The Drop.
Career
Justin.tv
In 2007, Justin Kan and partners
Emmett Shear,
Michael Seibel and
Kyle Vogt started
Justin.tv, a 24–7 live video feed of Kan's life, broadcast via a webcam attached to his head. Kan was 23 years old at the time.

Kan's "
lifecasting" lasted about eight months. Kan's concept attracted media attention, and resulting interviews with him included one by
Ann Curry on the ''
Today Show''. Viewers accompanied Kan as he walked the streets of
San Francisco
San Francisco, officially the City and County of San Francisco, is a commercial, Financial District, San Francisco, financial, and Culture of San Francisco, cultural center of Northern California. With a population of 827,526 residents as of ...
, sometimes involved in both pre-planned events (trapeze lesson, dance lesson) and spontaneous situations (being invited into the local
Scientology center by a sidewalk recruiter).
Afterward, the company transitioned to providing a live video platform so anyone could publish a live video stream.
Justin.tv, the platform, launched in 2007 and was one of the largest live video platforms globally with more than 30 million unique users every month.
Justin.tv was shut down on August 5, 2014, in an effort to focus further on Justin.tv's parent company,
Twitch.
Twitch
After Justin.tv launched in 2007, the site added subject-specific content categories like Social, Tech, Sports, Entertainment, News & Events, Gaming and others. Gaming quickly grew to become the most popular content on the site.
The company then decided to spin off the gaming content under a separate brand at a separate website. They named it
TwitchTV, inspired by the term
twitch gameplay
Twitch gameplay is a type of video gameplay scenario that tests a player's response time. Action games such as shooters, sports, multiplayer online battle arena, and fighting games often contain elements of twitch gameplay. For example, fir ...
. It launched officially in public beta on June 6, 2011.
Twitch was acquired by
Amazon.com in August 2014 for $970 million.
Socialcam
In March 2011, Kan launched Socialcam, a smartphone application that allowed users to capture and share videos. Socialcam was bought by Autodesk in July 2012 for $60 million and was eventually shut down in October 2015. The application reached 16 million downloads before its acquisition.
Exec
Kan launched Exec on February 29, 2012 with the goal of allowing anyone to outsource miscellaneous tasks for $25/hour. Exec was co-founded with his brother Daniel Kan, former head business development at
UserVoice, and Amir Ghazvinian.
In January 2014, Exec was purchased by
Handybook, in an all-stock transaction.
Y Combinator
Kan was a member of the first batch of YC-funded startups in 2005 for Kiko Calendar, and was funded by YC again for Justin.tv
and Exec. Kan became a partner at
Y Combinator
Y Combinator, LLC (YC) is an American technology startup accelerator and venture capital firm launched in March 2005 which has been used to launch more than 5,000 companies. The accelerator program started in Boston and Mountain View, Californi ...
in March 2014, where he offered advice to the new startups. In March 2017, Kan left Y Combinator to start his own incubator, Zero-F.
The Drop
The Drop is a Reddit-style electronic music discovery platform that launched in early 2015. Users can post and up-vote community-curated and sourced tracks. It was founded by Kan and his college friend
Ranidu Lankage.
Atrium
In 2017, Kan launched technology-enabled law firm, Atrium. Kan raised $10.5 million in an initial "party" round of investment led by
General Catalyst. In September 2018, Kan raised an additional $65 million funding round led by
Andreessen Horowitz. At that time, Andrew Chen,
Marc Andreessen
Marc Lowell Andreessen ( ; born July 9, 1971) is an American businessman and former software engineer. He is the co-author of Mosaic, the first widely used web browser with a graphical user interface; co-founder of Netscape; and co-founder and ...
and
Michael Seibel joined the Atrium board of directors. Atrium closed operations in March 2020.
YouTube
Justin Kan started a
YouTube
YouTube is an American social media and online video sharing platform owned by Google. YouTube was founded on February 14, 2005, by Steve Chen, Chad Hurley, and Jawed Karim who were three former employees of PayPal. Headquartered in ...
channel in 2021. In February 2021 he announced that fans could collect his YouTube videos as
non-fungible tokens on
OpenSea.
Fractal
Kan started Fractal.is in December 2021 as a marketplace for Solana-based
NFTs. Players could buy NFTs directly from game companies or through peer-to-peer trading. In April 2022, Fractal raised $35 million in a seed round led by Paradigm and Multicoin Capital. Other investors include
Andreessen Horowitz (a16z), Solana Labs,
Animoca Brands,
Coinbase Ventures and Terraform Labs CEO
Do Kwon, and others.
In 2024, Fractal was renamed to Stash, and pivoted to include a suite of products which allow game developers to interface directly with their customers.
References
External links
*
Blog 'A really bad idea'Justin Kan: video interview for Princeton Startup TV
{{DEFAULTSORT:Kan, Justin
1983 births
American information technology businesspeople
Living people
Place of birth missing (living people)
Yale University alumni
American venture capitalists
Y Combinator people
Twitch (service) people
American people of Chinese descent