Spread Certificate · No. HIS-01106
This certifies how far it spread
SETI@home volunteer launch
UC Berkeley SETI@home team ·May 1999 ·seeded onOpen webthenPress
Spread Score
10
Niche
Verified independently
Verified
2 outlets
National press, from WIRED and Wired
Verified
3 months
Seed to milestone, May 17 ’99 to Aug 16 ’99
Verified
2 platforms
Started on Open web
Claimed, not audited
Claimed
2M
Participants reported by first anniversary; lower bound
Per The Planetary Society
Claimed
1M
Signups reported after three months; lower bound
Per UC Berkeley
Claimed
600K
Participants completing at least one work unit; approximate
Per UC Berkeley