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Irrespective of the length of time required to calculate one hash, how many hash operations are required to produce one Bitcoin?

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11

These charts show the approximate network hash rate on the left axis: http://bitcoin.sipa.be/

We know the network adjusts for 25 new bitcoins per 10 minutes.

Together this provides enough info to give an approximate answer to your question:

hashes per bitcoin 
= (network hash rate) / (25 BTC per 10 minutes)
= (180 * Th / s) / (25 * BTC / (600 * s) )
= 180 * 600 / 25 * Th / s / BTC * s
= 2,700 Th / BTC
= 2,700,000,000,000,000 h/BTC
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6
  • What does the 180 stand for?
    – powtac
    Jul 7 '13 at 9:58
  • That is read from the charts I linked to. It is the current network hash rate in terra-hash-per-second, as the charts show this number continually changes as miners come and go.
    – Anonymous
    Jul 7 '13 at 10:03
  • Thanks! I think I have to dig deeper into the function of BC to understand everything!
    – powtac
    Jul 7 '13 at 10:08
  • 1
    Enjoy the ride!
    – Anonymous
    Jul 7 '13 at 10:10
  • @powtac remember this result changes every 2160 blocks (roughly two weeks).
    – kaoD
    Jan 12 '14 at 20:03
2

A good and simple website to calculate how much bitcoin can be created with what machine can be found at: http://www.alcula.com/calculators/finance/bitcoin-mining/

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1

Difficulty changes regularly, but there are calculators that take all current factors into account:

https://www.cryptocompare.com/mining/calculator/btc?HashingPower=15&HashingUnit=TH%2Fs&PowerConsumption=0&CostPerkWh=0

As of today (17 Jan 2017): a theoretical 1,581 TH/s (equivalent of running a hundred Antminer S9's) will return 1 BTC in a day.

Tomorrow, it will be different.

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