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was the first person to receive a Bitcoin transaction from Satoshi, one of the most talented cryptographers of his generation, and a deeply human story at the heart of Bitcoin's origin. His life spans the entire arc from cypherpunk idealism to the birth of the world's most important cryptocurrency — and his decision to be cryopreserved adds a uniquely poignant coda. Understanding Hal Finney is understanding the human side of Bitcoin's creation.
The cryptographer
Hal Finney was, by all accounts, a remarkable person. A Caltech graduate, he became the second developer hired at PGP Inc. in the early 1990s, working alongside Phil Zimmermann on Pretty Good Privacy — the software that brought strong encryption to the public for the first time. At a time when the US government treated encryption as a munition and tried to restrict its export, PGP was a radical act of making privacy accessible.
Finney was an active member of the cypherpunks mailing list, the community that produced many of the ideas that would later become Bitcoin. He was known as a meticulous, thoughtful contributor — not a self-promoter, but someone who wrote code and tested ideas rigorously.
In 2004, Finney created Reusable Proofs of Work (RPOW), an early digital cash system based on Adam Back's Hashcash. RPOW allowed users to exchange tokens backed by computational work — a direct conceptual precursor to Bitcoin's proof-of-work mechanism. Finney implemented and deployed RPOW as open-source software, running a trusted server to verify the proofs. It was a small project with few users, but a working proof of the concept — Bitcoin would later build on the same proof-of-work ideas, though the Bitcoin whitepaper cites b-money and Hashcash rather than RPOW itself.
The first Bitcoin user
When Satoshi Nakamoto announced Bitcoin on the cryptography mailing list in late 2008, Finney was one of the few people who took it seriously. He downloaded the software the day it was released (January 9, 2009) and began running a Bitcoin node.
On January 12, 2009, Satoshi sent 10 BTC to Finney — the first Bitcoin transaction between two people (block 170). Finney had been mining Bitcoin on his CPU and was one of the very first participants in the network. He later described the experience in his “Bitcoin and Me” post:
“When Satoshi announced the first release of the software, I grabbed it right away. I think I was the first person besides Satoshi to run bitcoin. I mined block 70-something, and I was the recipient of the first bitcoin transaction, when Satoshi sent ten coins to me as a test.”
Finney continued mining for a short time, accumulating what would have been a significant Bitcoin fortune. Then, tragically, he was diagnosed with ALS.
The ALS diagnosis
In August 2009, Finney was diagnosed with amyotrophic lateral sclerosis (ALS) — the same disease that had afflicted physicist Stephen Hawking. ALS is a progressive neurodegenerative disease that paralyzes the body while leaving the mind fully intact. There is no cure.
As the disease progressed, Finney lost the ability to type with his hands, then to move his arms, and eventually nearly all voluntary movement. But his mind remained sharp. He continued to communicate using eye-tracking technology and, later, a brain-computer interface. He remained active in the Bitcoin community for as long as he physically could.
Finney's Bitcoin, mined in the early days, remained in wallets he could no longer easily access as his condition worsened. There has been speculation about how much Bitcoin Finney held and what happened to it, but the family has kept this private.
The timeline
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Harold Thomas Finney II is born in Coalinga, California. He would become one of the most respected cryptographers and software engineers in the early crypto community.
Finney joins Phil Zimmermann's PGP (Pretty Good Privacy) team, working on the first widely-available encryption software for the public. He becomes the second developer hired at PGP Inc. He is an active participant in the cypherpunks mailing list, advocating for privacy and cryptographic freedom.
Finney creates Reusable Proofs of Work (RPOW) — an early digital cash system based on Adam Back's Hashcash proof-of-work system. RPOW allowed users to exchange tokens that represented computational work, with a trusted server verifying the proofs. It was a direct precursor to Bitcoin's proof-of-work mechanism.
On January 12, 2009, Satoshi Nakamoto sends 10 BTC to Hal Finney in the first-ever Bitcoin transaction between two people (block 170). Finney had downloaded the Bitcoin software on the day it was released and was the first person besides Satoshi to run a Bitcoin node.
Finney mines Bitcoin on his computer — "running bitcoin" — and describes the experience on the bitcointalk.org forum: "When Satoshi announced the first release of the software... I grabbed it right away. I think I was the first person besides Satoshi to run bitcoin." He reported that mining produced blocks fairly quickly on his CPU.
Finney is diagnosed with ALS (amyotrophic lateral sclerosis, also known as Lou Gehrig's disease). The disease progressively paralyzes the body while leaving the mind intact. Finney continues to work and communicate for as long as he physically can.
Finney writes his famous "Bitcoin and Me" post on bitcointalk.org, describing his experience as an early Bitcoin user, his ALS diagnosis, and his decision to be cryopreserved by Alcor. The post is one of the most moving documents in crypto history.
Hal Finney passes away at the age of 58. His body is cryopreserved by the Alcor Life Extension Foundation, in the hope that future medical technology may be able to revive him. He is the first known Bitcoiner to be cryopreserved.
“Bitcoin and Me”
In March 2013, Finney wrote his famous “Bitcoin and Me” post on bitcointalk.org. Written using eye-tracking software (he could no longer use his hands), the post describes his experience as an early Bitcoin user, his diagnosis with ALS, and his decision to be cryopreserved. It is one of the most widely-read and emotionally affecting documents in the history of cryptocurrency.
In the post, Finney describes his optimism about Bitcoin's future, his gratitude for the community, and his pragmatic decision to pursue cryopreservation:
Finney writes that ALS has slowly taken nearly everything — “Today, I am essentially paralyzed” — yet the post is striking for its calm optimism: “Even with the ALS, my life is very satisfying.” He still loves programming and the goals it gives him, counts himself “extraordinarily lucky to be there at the beginning” of Bitcoin, and closes at peace with what he built: “I'm comfortable with my legacy.”
The post is also notable for what it does not say. Finney does not claim to be Satoshi. He describes Satoshi as someone he communicated with, not someone he was. Many people find this notable — if Finney were Satoshi, “Bitcoin and Me” would have been a natural place to say so, especially given that he was terminally ill. His silence on the matter is, for some, evidence that he was not Satoshi; for others, it is exactly what Satoshi would do.
Cryopreservation
Finney and his wife, Fran, made the decision to have his body cryopreserved by the Alcor Life Extension Foundation after his death. Cryopreservation is the process of preserving a body at liquid-nitrogen temperatures (−196°C) in the hope that future medical technology may be able to revive the person and cure the disease that killed them. It is a gamble — there is no guarantee that revival will ever be possible — but for Finney, it was a rational choice given his situation.
On August 28, 2014, Hal Finney passed away at the age of 58. His body was cryopreserved at Alcor. He is the first known Bitcoiner to be cryopreserved — a fact that has a certain poetic resonance with Bitcoin itself, a system designed to persist across time.
Was Hal Finney Satoshi?
The theory that Finney was Satoshi (or part of a team that included Satoshi) is one of the most popular theories about Bitcoin's creation. The evidence is circumstantial but suggestive:
- Finney was a cypherpunk and PGP developer with the cryptographic knowledge to create Bitcoin.
- He created RPOW, a direct precursor to Bitcoin's proof-of-work.
- He was the first person to run Bitcoin besides Satoshi and the first recipient of a Bitcoin transaction.
- He lived in Temple City, California — the same town where Dorian Nakamoto (the man Newsweek identified as Satoshi) lived.
- His writing style has been compared to Satoshi's and found plausible (though not definitive).
Finney explicitly denied being Satoshi. In his “Bitcoin and Me” post, he described Satoshi as a separate person he communicated with. Skeptics note that if Finney were Satoshi, he had every opportunity to reveal it (especially when terminally ill) and chose not to — which could mean he wasn't, or could mean he was consistent to the end in maintaining the pseudonym.
The most balanced assessment is: Hal Finney was almost certainly not the sole creator of Bitcoin (he was the first user, not the creator), but he may have been involved in ways we'll never know. He is, regardless, one of the most important figures in Bitcoin's history. For the full debate, see the Satoshi Nakamoto deep dive.
Beyond Bitcoin, Hal Finney's legacy includes his work on PGP (which brought encryption to millions), RPOW (a precursor to Bitcoin's proof of work), and his courage in the face of ALS. He continued to think, write, and contribute for years after his body stopped cooperating — using eye-tracking software and a brain-computer interface to communicate. He represents the best of the cypherpunk ethos: brilliant, humble, principled, and dedicated to building tools that give people more freedom.
Key takeaways
- Hal Finney was a cypherpunk, PGP developer, and the creator of RPOW (a direct precursor to Bitcoin's proof-of-work). He was the first person to receive a Bitcoin transaction from Satoshi, in January 2009.
- In August 2009, Finney was diagnosed with ALS. He continued to communicate and contribute using eye-tracking and brain-computer technology for years after losing nearly all physical movement.
- His “Bitcoin and Me” post (2013) is one of the most moving documents in crypto history — written with eye-tracking software, describing his experience as Bitcoin's first user and his approaching death.
- Finney was cryopreserved by Alcor after his death in August 2014, making him the first known Bitcoiner to be cryopreserved.
- Whether Finney was Satoshi remains unresolved. He denied it, but the circumstantial evidence (cypherpunk, RPOW, first user, same town as Dorian Nakamoto) makes him a perennial candidate. His death means we may never know for certain.