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Difficulty was 1 at genesis time.
Hashes / sat was 0.8 at genesis time. (4 billion hashes / 5 billion sats)
Hashes per sat now is (napkin math, 4 halvings) 100 trillion * 2^4 * 0.8
Naive: buying bitcoin with energy got more expensive by about 1.6 quadrillion times. More nuance: actually more like only a trillion because the transition to asics was about 1000x more energy efficiency. (I don't know the actual efficiency factor, but I think this is a decent guess.)
Nah. Bitcoin is easy. Just stack some and exchange it with other bitcoiners for goods and services.
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that's the difficulty now with bitcoin, many people are looking for a source of life through bitcoin now.
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96 trillion according to this: https://bitcoinisdata.com/difficulty/
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