Widely credited as the inventor of digital cash, David Chaum is sometimes known as the “father of online anonymity” or the “godfather of cryptocurrency,” whose work inspired the near-mythical group called the Cypherpunks from which Bitcoin emerged. 

Beginning his studies in computer science in the late 1970s, when encryption was classified at the same level as nuclear technology, Chaum quickly realized that the technology would be crucial to ensure the continuation of privacy and democracy in the digital age. More recently, he founded xx Network, a privacy-focused blockchain whose connected xx Messenger Chaum hopes will withstand attacks even by quantum computers of the future.

“The National Security Agency was taking the position that cryptography was born classified, even if you created it yourself — like nuclear weapons technology,” Chaum recalls. He was told around 1980 that conferences on the subject would naturally not be allowed and that “people who organize them would be prosecuted.” 

Cryptography, encryption, cypherpunks, xx Network, xx Messenger, xx Coin, privacy, quantum computing, Ecash, DigiCash, democracy, Hannu Nurmi — “I was risking spending the rest of my life in jail,” he says.



David Chaum
David Chaum was 10 years ahead of the Cypherpunks in his understanding of cryptography and digital privacy.




Encryption has long been of vital importance in warfare, and the Allies breaking the cipher of the Enigma machine and decoding the Nazis’ secret messages changed the course of World War II.

Afterward, the United States government…

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