Satoshi Nakamoto is the name used by the creator(s) of Bitcoin. Learn more about this unknown developer and who it might be.
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Everyone can resist the urge to cash out $10k, some people can resist the urge to cash out $10M, and very few people (almost no one) can resist cashing out $1B, let alone $29B.
To resist the urge to cash out 29B, you probably need to have about 100B. How many software engineers you know would be doing open source projects if they have that much and still be able to resist the urge to cash out 29B? I remember the silk road guy was offered like 1B or so but resist the urge to sell, ended up getting caught and shut down.
If it is an org to resist the urge to cash out 29B, not even put it on the book to let everyone knows, that org probably controls 290B or more. What kind of org has that much influence? That's bigger than most investment bank, and most likely have to be a government of some sort.