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Hashrate

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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>
-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/
-|title=Block Discovery Rate = 11blocks/hr; Network hash rate = 3.2 Thash/s|date=2011-05-22 | work=Reddit Bitcoin}}</ref>
-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=20110407|work=Bitcoin Forum}}</ref>
-==See also==
-* [[Cryptographic hash function]]
-* [[Proof-of-work system]]
-* [[Terabyte]]
-* [[Orders of magnitude (computing)]]
-* [[SHA-256]]
-==References==
-{{reflist|2}}
-[[Category:Cryptography]]