In 1983, cryptographer David Chaum first proposed the concept of digital cash, e-Cash;
In 1989, David Chaum developed the first digital cash system DigiCash based on the concept of e-Cash;
In 1994, Daniel C. Lynch developed CyberCash, an alternative to DigiCash.
In 1996, e-gold was established, an electronic payment system backed by gold, where users could make payments through their e-gold accounts;
In 1997, Dr. Adam Back proposed HashCash, which might be considered a digital cash from its name, but is actually an anti-spam system, which is the direct source of PoW in the Bitcoin system.
In 1998, David, a Chinese who had just graduated, proposed the design of B-money, which was the first anonymous digital currency solution that did not rely on a centralized institution.
Also in 1998, Nick Szabo proposed the design of Bit Gold, which is also a completely decentralized digital currency solution;
In 2000, PayPal was born. After being criticized by regulators, PayPal abandoned the idea of Internet currency and completely turned to traditional payment networks.
In 2005, the highlight moment came. After 7 years of thinking, Nick Szabo once again updated the design of Bit Gold, which was the closest to Bitcoin in history.
In 2008, after systematically absorbing and discarding the work of his predecessors, Satoshi Nakamoto brought Bitcoin onto the historical stage; after two years of humble development, the Age of Discovery kicked off;
See? The emergence of Bitcoin was never achieved overnight. It is the result of the continuous efforts of the entire cypherpunk community over the past few decades, the perfect fusion of natural science and social science, and the flow and victory of ideas; #feedfeverchallenge