SETI@home Launches
The SETI@home project launches, creating the world's largest distributed supercomputer from volunteer home PCs.
On May 17, 1999, the University of California, Berkeley launched SETI@home, a scientific experiment that utilized internet-connected computers to search for Extraterrestrial Intelligence (SETI). The project was designed to solve a resource shortage: analyzing the massive amount of radio telescope data from the Arecibo Observatory required supercomputing power that researchers could not afford. Their solution was to break the data into tiny chunks and send them to millions of personal computers to process during idle time (via a screensaver).
SETI@home became a cultural phenomenon and a critical technical precursor to Bitcoin. It proved that a distributed network of consumer-grade PCs could collectively outperform the world's fastest centralized supercomputers. At its peak, the project had over 5 million participants and achieved a collective performance of over 500 TeraFLOPS. This validated the concept of public-resource computing: the idea that individuals would voluntarily run hot, electricity-hungry hardware 24/7 to support a network they believed in.
Technically, SETI@home established the behavior pattern of "running a node." Users downloaded a client, connected to the network, and performed work (Proof-of-Work, in a scientific sense) to contribute to the whole. When Satoshi Nakamoto designed Bitcoin, he leveraged this exact model—users running software in the background to secure the network—but added financial incentives (block rewards) to ensure the network's longevity. SETI@home proved that large-scale distributed systems could operate reliably with voluntary participation, creating the global network of hardware hosts that Bitcoin would later recruit.
Key Sources:
• SETI@home: About the Project
• NASA/JPL: SETI@home Project Legacy
• ACM: "SETI@home: An Experiment in Public-Resource Computing"