Cypherpunk

A cypherpunk is an activist who advocates the widespread use of strong cryptography and privacy-enhancing technologies as a route to social and political change. The cypherpunk movement took shape in the late 1980s and early 1990s around a mailing list of programmers, cryptographers and libertarians, and its ideas and members shaped public-key encryption software, anonymous communication, digital cash and, later, Bitcoin and Ethereum.

Origins

The philosophy behind the movement was set out by Timothy C. May in "The Crypto Anarchist Manifesto", which dates to mid-1988. May predicted that cryptography would enable anonymous communication and transactions and "alter completely the nature of government regulation, the ability to tax and control economic interactions". It opens: "A specter is haunting the modern world, the specter of crypto anarchy."

In 1992, May, Eric Hughes and John Gilmore began holding regular meetings in the San Francisco Bay Area and started the Cypherpunks mailing list, which became the movement's main forum. The name, a play on "cipher" and "cyberpunk", is credited to the hacker and writer Jude Milhon.

Ideas

Hughes's "A Cypherpunk's Manifesto", dated March 9, 1993, is the movement's best-known statement. It begins: "Privacy is necessary for an open society in the electronic age." Hughes argued that privacy could not be expected from governments or corporations and had to be defended by individuals building their own tools, summarized in the line "Cypherpunks write code." Cypherpunks favored practical software over lobbying, distributing encryption tools freely so that they could not be suppressed. A core cypherpunk argument was that cryptography favors defenders over attackers, an idea known as cryptographic asymmetry.

Crypto Wars

The movement's early years coincided with the "Crypto Wars", the United States government's efforts to restrict strong encryption. In 1991, Phil Zimmermann published the encryption program PGP (Pretty Good Privacy) for free on the internet. Its international spread led to a three-year criminal investigation into whether he had violated US export restrictions on cryptography, which the government dropped in early 1996. Cypherpunks also built anonymous remailers and campaigned against government proposals such as the Clipper chip.

Digital cash and Bitcoin

Digital cash was a recurring cypherpunk goal. Proposals from the cypherpunk milieu included Adam Back's Hashcash, a proof-of-work system, and Wei Dai's b-money (1998), both of which are cited in the Bitcoin white paper. On October 31, 2008, Satoshi Nakamoto announced Bitcoin on the Cryptography mailing list, a successor forum to the Cypherpunks list, in a message titled "Bitcoin P2P e-cash paper" describing "a new electronic cash system that's fully peer-to-peer, with no trusted third party".

Ethereum and the Milady scene

Cypherpunk ideas have been explicitly revived within Ethereum and the Milady community in the 2020s. In January 2025, Charlotte Fang described Milady as "a purity spiral onto cypherpunk values", an idea known as the Cypherpunk Purity Spiral. The following month, Remilia Corporation released the first issue of Milady Zine, whose introduction by Onno Whitemoor presents it as aspiring to become the "Federalist Papers for cypherpunk".

The Ethereum Foundation's 2026 EF Mandate codified censorship resistance, open source, privacy and security (CROPS) as the properties the foundation commits to protecting. Writing on the Mandate in MILADY_ZINE02 placed it within the cypherpunk tradition of May, Hughes, Zimmermann and Gilmore. Vitalik Buterin has described his defensive accelerationism as an extension of crypto's underlying values of decentralization and censorship resistance to other technologies.

See also

• Cypherpunk Purity Spiral
• Bitcoin
• Zero-Knowledge Proof
• EF Mandate
• Milady Zine
• Defensive Accelerationism
• Vitalik Milady Arc

External links

• A Cypherpunk's Manifesto by Eric Hughes
• The Crypto Anarchist Manifesto by Timothy C. May