I wonder how many thousands or millions of planets have there been that have come and gone before our time which were able to support life similar to ours. I also wonder if any of those planets had beings intelligent enough to have created something like bitcoin...
You can actually solve this puzzle by yourself
https://en.wikipedia.org/wiki/Drake_equationDrake equation:
N=R*×fp×ne×fl×fi×fc×L R* = the average rate of star formation in our galaxy
fp = the fraction of those stars that have planets
ne = the average number of planets that can potentially support life per star that has planets
fl = the fraction of planets that could support life that actually develop life at some point
fi = the fraction of planets with life that actually go on to develop intelligent life (civilizations)
fc = the fraction of civilizations that develop a technology that releases detectable signs of their existence
L = the length of time for which such civilizations release detectable signals into space
Sara Seager modified equation:
N=N*×FQ×FHZ×FO×FL×FS N = the number of planets with detectable signs of life
N* = the number of stars observed
FQ = the fraction of stars that are quiet
FHZ = the fraction of stars with rocky planets in the habitable zone
FO = the fraction of those planets that can be observed
FL = the fraction that have life
FS = the fraction on which life produces a detectable signature gas