{"id":31771,"date":"2019-08-01T05:00:00","date_gmt":"2019-08-01T05:00:00","guid":{"rendered":"https:\/\/fr.cryptonews.com\/?p=31771"},"modified":"2023-06-26T11:06:56","modified_gmt":"2023-06-26T11:06:56","slug":"c-est-quoi-un-noeud-bitcoin-4022","status":"publish","type":"post","link":"https:\/\/cryptonews.com\/fr\/exclusives\/c-est-quoi-un-noeud-bitcoin-4022\/","title":{"rendered":"C\u2019est quoi un noeud Bitcoin?"},"content":{"rendered":"<p><sub>Photo: iStock \/ Credit:gzorgz<\/sub><\/p><p>Parmi les diff&eacute;rents termes qui servent &agrave; d&eacute;finir ce qu&rsquo;est le r&eacute;seau Bitcoin, il y a celui de <b>noeud<\/b> (node en anglais), un concept essentiel pour comprendre comment fonctionne le protocole de la plus c&eacute;l&egrave;bre des cryptomonnaies.<\/p><p>En informatique, on consid&egrave;re g&eacute;n&eacute;ralement que tout ordinateur qui se connecte &agrave; un r&eacute;seau est un n&oelig;ud. Celui-ci est donc un point du r&eacute;seau capable de cr&eacute;er, recevoir ou transmettre un message. C&rsquo;est un point de communication essentiel.<\/p><p>En ce qui concerne le r&eacute;seau Bitcoin, il faut cependant faire le distingo entre plusieurs types de n&oelig;uds: les n&oelig;uds complets, les n&oelig;uds d&#8217;&eacute;coute et les n&oelig;uds de minage.<\/p><p>Les <b>n&oelig;uds complets<\/b> v&eacute;rifient toutes les r&egrave;gles impl&eacute;ment&eacute;es par le consensus Bitcoin. Ils t&eacute;l&eacute;chargent chaque bloc et chaque transaction et les comparent &agrave; ces r&egrave;gles, en voici quelques exemples:<\/p><figure style=\"max-width: 550px\"><img decoding=\"async\" src=\"https:\/\/cimg.co\/w\/articles-attachments\/1\/5d4\/1ac819ef34.png\" sizes=\"(min-width: 640px) 550px, 100vw\" srcset=\"https:\/\/cimg.co\/w\/articles-attachments\/1\/5d4\/1ac819ef34.png 300w, https:\/\/cimg.co\/w\/articles-attachments\/2\/5d4\/1ac819ef34.png 600w, https:\/\/cimg.co\/w\/articles-attachments\/3\/5d4\/1ac819ef34.png 720w, https:\/\/cimg.co\/w\/articles-attachments\/4\/5d4\/1ac819ef34.png 900w\" alt=\"Le logiciel Bitcoin Core\" class=\"content-img\"><figcaption>Le logiciel Bitcoin Core<\/figcaption><\/figure><ul><li>Les blocs ne peuvent cr&eacute;er qu&#8217;un certain nombre de bitcoins. (Actuellement 12,5 BTC par bloc.)<\/li><li>Les transactions doivent avoir des signatures correctes pour les bitcoins d&eacute;pens&eacute;s.<\/li><li>Dans une cha&icirc;ne de blocs unique, une sortie de transaction ne peut pas &ecirc;tre d&eacute;pens&eacute;e deux fois.<\/li><\/ul><p>Etc.<\/p><p>Les n&oelig;uds complets agissent comme des super-contr&ocirc;leurs qui v&eacute;rifient que les choses se passent selon les r&egrave;gles. Ils garantissent ainsi l&rsquo;int&eacute;grit&eacute; du r&eacute;seau et en assurent la s&eacute;curisation. Gr&acirc;ce &agrave; des logiciels comme Bitcoin Core, le n&oelig;ud complet t&eacute;l&eacute;charge l&rsquo;enti&egrave;ret&eacute; de la blockchain Bitcoin. <\/p><p>Les <b>n&oelig;uds d&rsquo;&eacute;coute<\/b> (Super Nodes) sont des n&oelig;uds visibles et publiques. Ils permettent d&rsquo;&eacute;changer avec les autres n&oelig;uds du r&eacute;seau et d&rsquo;&eacute;tablir des connexions, ce sont donc des points de communication essentiels du r&eacute;seau BTC. Ces super n&oelig;uds fonctionnent th&eacute;oriquement 24 heures sur 24, 7 jours sur 7. Si vous voulez activer un super-n&oelig;ud dans un client Bitcoin, vous devez le rendre connectable publiquement. Notez qu&rsquo;il vous faudra plus de puissance de calcul ainsi qu&rsquo;une meilleure connexion Internet que pour faire tourner un n&oelig;ud complet.<\/p><figure><img decoding=\"async\" src=\"https:\/\/cimg.co\/p\/no_image.svg\" sizes=\"(min-width: 640px) 720px, 100vw\" alt=\"Un n&oelig;ud d&rsquo;&eacute;coute\" class=\"content-img lazyload\" data-src=\"https:\/\/cimg.co\/w\/articles-attachments\/1\/5d4\/1ac9ce8e55.png\" data-srcset=\"https:\/\/cimg.co\/w\/articles-attachments\/1\/5d4\/1ac9ce8e55.png 300w, https:\/\/cimg.co\/w\/articles-attachments\/2\/5d4\/1ac9ce8e55.png 600w, https:\/\/cimg.co\/w\/articles-attachments\/3\/5d4\/1ac9ce8e55.png 720w, https:\/\/cimg.co\/w\/articles-attachments\/4\/5d4\/1ac9ce8e55.png 900w\"><figcaption>Un n&oelig;ud d&rsquo;&eacute;coute<\/figcaption><\/figure><p>On parle enfin de <b>n&oelig;uds de<\/b> <a href=\"https:\/\/cryptonews.com\/fr\/guides\/what-is-bitcoin-mining\/\"><b>minage<\/b><\/a>. Les mineurs utilisent des programmes distincts de Bitcoin Core pour miner les blocs de Bitcoin. Certains mineurs choisissent d&rsquo;avoir leur propre n&oelig;ud complet et ainsi conserver une copie compl&egrave;te de la blockchain. D&#8217;autres mineurs choisissent de s&rsquo;unir via un pool de minage et travaillent ensemble pour r&eacute;soudre les probl&egrave;mes cryptographiques li&eacute;s au minage. Dans ce cas, l&rsquo;administrateur du pool maintient un n&oelig;ud complet pendant que les mineurs du pool fournissent leur puissance de hachage.<\/p><p>Pour comprendre comment fonctionne le minage, <a href=\"https:\/\/cryptonews.com\/fr\/guides\/how-bitcoin-mining-works\/\">lisez notre guide<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Photo: iStock \/ Credit:gzorgzParmi les diff&eacute;rents termes qui servent &agrave; d&eacute;finir ce qu&rsquo;est le r&eacute;seau Bitcoin, il y a celui de noeud (node en anglais), un concept essentiel pour comprendre comment fonctionne le protocole de la plus c&eacute;l&egrave;bre des cryptomonnaies.En informatique, on consid&egrave;re g&eacute;n&eacute;ralement que tout ordinateur qui se connecte &agrave; un r&eacute;seau est un [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[5,2],"tags":[44,85,71,62],"editors":[400],"sponsored_companies":[],"class_list":["post-31771","post","type-post","status-publish","format-standard","hentry","category-features","category-exclusives","tag-bitcoin","tag-blockchain","tag-cryptomonnaies","tag-minage","editors-david-nathan"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>C\u2019est quoi un noeud Bitcoin?<\/title>\n<meta name=\"description\" content=\"C\u2019est quoi un n\u0153ud Bitcoin?\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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