Satoshi ↔ Gavin Andresen Correspondence

Gavin Andresen, a software developer based in Amherst, Massachusetts, discovered Bitcoin in May 2010, approximately eighteen months after Satoshi published the whitepaper. He quickly became fascinated by the project and began corresponding with Satoshi via email and through the Bitcointalk forum.

After chatting with Satoshi about Bitcoin and its potential, Andresen identified a key barrier to adoption: new users needed a way to obtain coins without having to mine them. His solution was the Bitcoin Faucet — a website that gave away free bitcoins (initially 5 BTC per visitor) to anyone who completed a CAPTCHA.

Andresen announced his “really dumb” idea on the Bitcointalk forum on June 11, 2010. Over the lifetime of the faucet, he gave away approximately 19,700 BTC. Far from being dumb, the faucet became one of the most effective tools for early Bitcoin adoption, allowing newcomers to experience the technology firsthand.

Andresen quickly proved himself as a capable and prolific developer, regularly submitting code to improve the Bitcoin software. His technical competence and responsible approach to development caught Satoshi’s attention, leading to an increasingly close working relationship throughout 2010.

Source: Based on publicly available information from Wikipedia, MIT Technology Review, and other published accounts. The specific private emails between Andresen and Satoshi from this period have not been publicly released in full.

In late 2010, as Satoshi Nakamoto began stepping back from active involvement in Bitcoin, he made the pivotal decision to hand project leadership to Gavin Andresen. Satoshi gave Andresen control of the source code repository (SVN access) and endorsed him as the project’s lead developer.

This decision was consistent with what Satoshi had privately communicated to Martti Malmi on December 3, 2010, when asked who should take over development responsibilities:

It should be Gavin [Andresen]. I trust him, he’s responsible, professional, and technically much more Linux capable than me.

Andresen formally stepped into the leadership role and announced it publicly on the Bitcointalk forum in December 2010:

With Satoshi’s blessing, and with great reluctance, I’m going to start doing more active project management for Bitcoin.

This moment represents one of the most significant transitions in Bitcoin’s history. Satoshi’s endorsement of Andresen was not arbitrary — it reflected months of working together and Satoshi’s confidence in Andresen’s technical abilities, professionalism, and alignment with Bitcoin’s goals. Andresen went on to become the primary maintainer of what would later be called Bitcoin Core, guiding the project through a critical period of growth.

Source: Based on Gavin Andresen’s public Bitcointalk forum post (December 2010), Martti Malmi’s published email archive (mmalmi.github.io/satoshi/), and multiple published accounts of the transition.

On April 26, 2011, Satoshi Nakamoto sent what would become his last known private email. Addressed to Gavin Andresen with the subject line “alert key,” this message marked Satoshi’s final transfer of authority and his farewell from the project he created.

Satoshi wrote:

I wish you wouldn’t keep talking about me as a mysterious shadowy figure, the press just turns that into a pirate currency angle. Maybe instead make it about the open source project and give more credit to your dev contributors; it helps motivate them.

He then announced his departure:

I’ve moved on to other things and will probably be unavailable.

Finally, he transferred the critical network alert key:

Here’s the CAlert key and broadcast code in case you need it. You should probably give it to at least one or two other people. There are a few long time users who are always around all the time.

The CAlert key was a powerful tool that enabled its holder to broadcast emergency messages to all Bitcoin clients on the network, warning of critical security issues or required upgrades. By transferring this key, Satoshi was completing the final piece of the leadership handover.

This email reveals several important aspects of Satoshi’s thinking in his final days of involvement: his discomfort with personal attention, his desire for Bitcoin to be recognized as a collaborative open source project rather than the creation of one mysterious individual, and his conviction that the project could sustain itself without him.

Satoshi never replied to Andresen’s subsequent response.

Source: Published by Gavin Andresen on his blog on April 26, 2022, the eleventh anniversary of the email. Originally sent from satoshin@gmx.com.

In his reply to Satoshi’s “alert key” email, Gavin Andresen addressed several points. He acknowledged reading a Forbes article and agreed that the “pirate currency” framing was problematic. He accepted Satoshi’s suggestion to give more credit to other developer contributors.

Andresen also accepted responsibility for the alert key, though he expressed concern about identifying trustworthy recipients to share it with.

Then, Andresen disclosed something significant — he had been contacted by In-Q-Tel (IQT), a US government-funded strategic investment company that supports the CIA and other intelligence agencies. IQT had invited him to present Bitcoin at their annual conference on emerging technologies for US intelligence agencies. Andresen explained his reasoning for accepting the invitation:

I hope that by talking directly to “them” and, more importantly, listening to their questions/concerns, they will think of Bitcoin the way I do — as a just-plain-better, more efficient, less-subject-to-political-whims money. Not as an all-powerful black-market tool that will be used by anarchists to overthrow The System.

Andresen committed to transparency about the engagement, saying he would publicly announce the visit.

Satoshi never replied to this message and was never heard from again.

The timing of Satoshi’s disappearance following this disclosure has fueled years of speculation. Some believe Satoshi’s departure was motivated by concern over government attention to Bitcoin. Others note that Satoshi had already been gradually withdrawing for months and that the April 26 email’s tone — “I’ve moved on to other things” — suggests the departure was planned regardless of Andresen’s CIA disclosure.

Andresen followed through on his promise and presented at CIA headquarters on June 14, 2011.

Source: Published by Gavin Andresen on his blog on April 26, 2022, the eleventh anniversary of the email exchange.