Terahash: Difference between revisions
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We don't need to create an article for exach combination of si-prefix with every word. :) |
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#redirect [[hash]] |
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{{Orphan|date=December 2011}} |
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A '''terahash''' is a multiple of [[cryptographic hash function]] iterations for [[proof-of-work system]]s. The [[SI prefix|prefix]] ''[[tera-|tera]]'' means 10<sup>12</sup> in the [[International System of Units]] (SI), and therefore 1 terahash is {{gaps|1|000|000|000|000|hashes}}, or 1 [[Orders of magnitude (numbers)#1012|trillion]] ([[short scale]]) hashes. The unit symbol for the terahash is '''Thash'''. |
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==Usage== |
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The [[Bitcoin]] currency protocol secures recent transactions using proof-of-work, making false transactions expensive to generate.<ref name="bitcoin-whitepaper">{{cite book|last=Nakamoto|first=Satoshi|title=Bitcoin: A Peer-to-Peer Electronic Cash System|url=http://www.bitcoin.org/bitcoin.pdf|accessdate=14 December 2010|date=24 May 2009}}</ref> |
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Participants measure their network's strength by the rate of work it sustains, marked in Thash/s.<ref name=reddit-bitcoin>{{cite news|url=http://www.reddit.com/r/Bitcoin/comments/hhbke/block_discovery_rate_11blockshr_network_hash_rate/ |
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|title=Block Discovery Rate = 11blocks/hr; Network hash rate = 3.2 Thash/s|date=2011-05-22 | work=Reddit Bitcoin}}</ref> |
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One Bitcoin hash performs all the [[subroutine]]s necessary for two complete [[SHA-256]] hashes of a block of data.<ref name=bitcoin-forum>{{cite news|url=http://forum.bitcoin.org/index.php?topic=5495.msg81156#msg81156|title=Re: How many SHA-256 hash calculations are counted in one "hash per second"?|date=2011-04-07|work=Bitcoin Forum}}</ref> |
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==See also== |
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* [[Cryptographic hash function]] |
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* [[Proof-of-work system]] |
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* [[Terabyte]] |
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* [[Orders of magnitude (computing)]] |
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* [[SHA-256]] |
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==References== |
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{{reflist|2}} |
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[[Category:Cryptography]] |
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Revision as of 23:30, 26 December 2012
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