Software developer, founder of Wasabi Software, creator of the Bitcoin Faucet, and the person Satoshi Nakamoto chose to hand over project leadership. He was granted commit access to the Bitcoin repository and served as lead maintainer from 2011 to 2014.
Gavin Andresen (born Gavin Bell in 1966 in Melbourne, Australia) is a software developer who became the lead maintainer of Bitcoin after Satoshi Nakamoto’s departure. He grew up in the United States, earned a degree in Computer Science from Princeton University in 1988, and later founded Wasabi Software, a 3D graphics software company.
Discovery of Bitcoin: Andresen first encountered Bitcoin in 2010. He quickly became one of the most active contributors, creating the Bitcoin Faucet — a website that gave away free bitcoins to help people learn about and start using the technology. He announced the Faucet on the BitcoinTalk forum on June 11, 2010. This was one of the earliest efforts to promote Bitcoin adoption.
Satoshi’s Chosen Successor: Over the course of 2010, Satoshi Nakamoto increasingly trusted Andresen with greater responsibility in the project. By approximately September–October 2010, Satoshi granted him commit access to the Bitcoin source code repository on SourceForge, along with the network alert key. In an email to developer Mike Hearn on April 23, 2011, Satoshi wrote: “I’ve moved on to other things. It’s in good hands with Gavin and everyone.”
Lead Maintainer (2011–2014): After Satoshi’s departure in April 2011, Andresen became the de facto leader of Bitcoin development. He received the last known email from Satoshi on April 26, 2011, in which Satoshi handed over the CAlert key and wrote: “I wish you wouldn’t keep talking about me as a mysterious shadowy figure.” Andresen later became the Chief Scientist of the Bitcoin Foundation when it was established in September 2012.
CIA Visit: On June 14, 2011, Andresen presented about Bitcoin at CIA headquarters in Langley, Virginia, as part of an In-Q-Tel conference on emerging technologies. He had informed Satoshi of the invitation beforehand, after which Satoshi’s communications became less frequent and eventually ceased entirely.
Later Years: On April 8, 2014, Andresen stepped down as lead maintainer, passing the role to Wladimir van der Laan. He continued to contribute to Bitcoin development and advocated for increasing the block size limit to improve transaction capacity.
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Gavin Andresen begins corresponding with Satoshi Nakamoto after discovering Bitcoin in May 2010 and starts submitting code contributions. He creates the Bitcoin Faucet to give away free BTC and boost adoption.
An integer overflow bug (CVE-2010-5139) was exploited to create 184,467,440,737.09551616 BTC in a single transaction in Block 74638. Satoshi Nakamoto published a fix within 5 hours, and the corrected chain overtook the invalid chain within 15 hours — the most serious crisis in Bitcoin's history.
Gavin Andresen announces he has been invited to give a presentation about Bitcoin at the CIA, which may have contributed to Satoshi's subsequent withdrawal from the project.
Bitcoin v0.3.18 was released on SourceForge, one of Satoshi's last releases, featuring wallet compatibility fixes and Gavin Andresen's accounts-based JSON-RPC commands.
One of the first major print magazine articles about Bitcoin, published in Forbes. Andy Greenberg interviewed Gavin Andresen, who described Bitcoin as 'better gold than gold.' The article brought significant mainstream media attention and may have contributed to Satoshi's decision to withdraw from public communication.
Satoshi's last known private communication, an email to Gavin Andresen saying he has 'moved on to other things' and that Bitcoin is 'in good hands.'
Australian businessman Craig Wright publicly declared himself to be Satoshi Nakamoto in coordinated interviews with BBC, The Economist, and GQ. He provided a cryptographic 'proof' on his blog that was quickly debunked — he had reused a signature from a 2009 transaction rather than producing a new one.
Gavin Andresen, who was given commit access to Bitcoin by Satoshi and became the lead developer, recalls his interactions with Satoshi and the transition of leadership.
Jeff Garzik, one of Bitcoin's earliest core developers, reflects on his experience working directly with Satoshi Nakamoto. He discovered Bitcoin through a Slashdot post in July 2010 and became one of the top three contributors to Bitcoin's codebase.