Bitcoin (BTC) hashrate

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Explanation of hashrate chart.


Hashrate of individual miner is measured in the number of attempts per second that a miner can perform to find a block.
Hashrate of the network is measured in the number of attempts per second that all miners can perform to find a block.

Extended explanation:
Hashrate is a common measure indicating the processing power of bitcoin network.
As bitcoins get mined, blocks of validated transactions have to be "hashed" before they are recorded to the blockchain.
Each of the hashes is created by solving a deliberately complicated mathematical task, or puzzle. The hashrate is a measure of the number of attempts the network tries to complete this puzzle every second. Hence, this computing power is described in hashes per second or H/s.
Hashrate is a perfect benchmark of the bitcoin network’s overall well-being. A higher hashrate is more preferable to lower one, as it effectively demonstrates the network is better secured from 51-percent attacks.
The higher the hashrate of the network, the greater the number of miners is required to carry out a 51-percent attack.

Hashrate denominations:

  • 1 kH/s is 1,000 (kilo, one thousand) hashes per second
  • 1 MH/s is 1,000,000 (mega, one million) hashes per second
  • 1 GH/s is 1,000,000,000 (giga, one billion) hashes per second
  • 1 TH/s is 1,000,000,000,000 (tera, one trillion) hashes per second
  • 1 PH/s is 1,000,000,000,000,000 (peta, one quadrillion) hashes per second
  • 1 EH/s is 1,000,000,000,000,000,000 (exa, one quintillion) hashes per second
  • 1 ZH/s is 1,000,000,000,000,000,000,000 (zetta, one sextillion) hashes per second