If Bitcoin's hashrate keeps increasing at the same rate, by the year 2048 private key cracking will be more rewarding than mining. (reddit.com)

Bitcoin’s hash rate has been doubling once every 75 days in average. It varies a lot, though, but, assuming it keeps a similar pace, and assuming that guessing one private key has the same cost of a single hash, then, by the end of 2048, it will be more rewarding for miners to brute force private keys rather than mining. Year 2009 Block 0 Reward 50.0000 ~ btc/block Supply 0 ~ btc HashRate 2 ^ 16.14 ~ hash/s BlockReward 50 ~ btc/block CrackReward 0 ~ btc/block Year 2010 Block 52560 Reward 50…

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