diff --git a/ch10.asciidoc b/ch10.asciidoc index 5cca4411..bc3ceca7 100644 --- a/ch10.asciidoc +++ b/ch10.asciidoc @@ -1739,44 +1739,8 @@ chips specialized for the purpose of mining. The first such chips could deliver more mining power in a single box than the entire Bitcoin network in 2010. -The following list shows the total hashing power of the Bitcoin network, -over the first eight years of operation: - -2009:: 0.5 MH/sec–8 MH/sec (16× growth) -2010:: 8 MH/sec–116 GH/sec (14,500× growth) -2011:: 116 GH/sec–9 TH/sec (78× growth) -2012:: 9 TH/sec–23 TH/sec (2.5× growth) -2013:: 23 TH/sec–10 PH/sec (450× growth) -2014:: 10 PH/sec–300 PH/sec (30× growth) -2015:: 300 PH/sec-800 PH/sec (2.66× growth) -2016:: 800 PH/sec-2.5 EH/sec (3.12× growth) - -In the chart in <>, we can see that Bitcoin -network's hashing power increased over the past two years. As you can -see, the competition between miners and the growth of bitcoin has -resulted in an exponential increase in the hashing power (total hashes -per second across the network). - -[[network_hashing_power]] -.Total hashing power, terahashes per second (TH/sec) -image::images/mbc2_1007.png["NetworkHashingRate"] - -As the amount of hashing power applied to mining bitcoin has exploded, -the difficulty has risen to match it. The difficulty metric in the chart -shown in <> is measured as a ratio of current -difficulty over minimum difficulty (the difficulty of the first block). - -[[bitcoin_difficulty]] -.Bitcoin's mining difficulty metric -image::images/mbc2_1008.png["BitcoinDifficulty"] - -In the last two years, the ASIC mining chips have become increasingly -denser, approaching the cutting edge of silicon fabrication with a -feature size (resolution) of 16 nanometers (nm). Currently, ASIC -manufacturers are aiming to overtake general-purpose CPU chip -manufacturers, designing chips with a feature size of 14 nm, because the -profitability of mining is driving this industry even faster than -general computing. There are no more giant leaps left in bitcoin mining, +At the time of writing, it is believed that there are no more giant +leaps left in Bitcoin mining equipment, because the industry has reached the forefront of Moore's Law, which stipulates that computing density will double approximately every 18 months. Still, the mining power of the network continues to advance at