{"id":37261,"date":"2026-05-29T09:59:06","date_gmt":"2026-05-29T09:59:06","guid":{"rendered":"https:\/\/volity.io\/non-classifiee\/what-is-l1-vs-l2\/"},"modified":"2026-06-04T17:07:45","modified_gmt":"2026-06-04T17:07:45","slug":"what-is-l1-vs-l2","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/glossaire\/what-is-l1-vs-l2\/","title":{"rendered":"Qu&rsquo;est-ce que la Layer 1 vs Layer 2"},"content":{"rendered":"<h2>Comment fonctionne le L1 versus le L2<\/h2>\n<p>Une couche 1 (L1) est une blockchain de base comme Bitcoin ou Ethereum qui r\u00e8gle et s\u00e9curise ses propres transactions. Une couche 2 (L2) est un r\u00e9seau s\u00e9par\u00e9 b\u00e2ti au-dessus d&rsquo;un L1 pour traiter les transactions plus vite et moins cher, puis poster une preuve compress\u00e9e vers le L1 pour la s\u00e9curit\u00e9 finale. L&rsquo;id\u00e9e est de garder la s\u00e9curit\u00e9 du L1 tout en d\u00e9pla\u00e7ant l&rsquo;essentiel de l&rsquo;activit\u00e9 vers une couche plus rapide et moins ch\u00e8re au-dessus.<\/p>\n<h2>Exemple chiffr\u00e9<\/h2>\n<p>Envoyer une transaction directement sur Ethereum (un L1) peut co\u00fbter un <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-a-gas-fee\/\">gas<\/a> notable quand le r\u00e9seau est charg\u00e9. La m\u00eame transaction sur un L2 b\u00e2ti au-dessus d&rsquo;Ethereum pourrait co\u00fbter une fraction de centime, car le L2 regroupe de nombreuses transactions et les r\u00e8gle sur le L1 comme une seule. Vous obtenez une s\u00e9curit\u00e9 proche du L1 \u00e0 une infime fraction du co\u00fbt, la promesse centrale de la mise \u00e0 l&rsquo;\u00e9chelle par couches.<\/p>\n<h2>L1, L2 et trading<\/h2>\n<p>Le design L1-versus-L2 compte pour les utilisateurs on-chain qui p\u00e8sent vitesse, co\u00fbt et s\u00e9curit\u00e9, et il fa\u00e7onne l&rsquo;argument d&rsquo;investissement de long terme des coins concern\u00e9es. Sur Volity, vous prenez une exposition aux grands tokens L1 et L2 en spot ou CFD sans faire tourner de n\u0153uds ni bridger d&rsquo;actifs entre couches vous-m\u00eame. Comprendre la pile explique pourquoi frais et vitesses diff\u00e8rent tant d&rsquo;une cha\u00eene \u00e0 l&rsquo;autre.<\/p>\n<h2>Pourquoi c&rsquo;est important<\/h2>\n<p>La s\u00e9paration L1-versus-L2 est la fa\u00e7on dont la crypto tente la mise \u00e0 l&rsquo;\u00e9chelle sans sacrifier la s\u00e9curit\u00e9, donc elle sous-tend la th\u00e8se de valeur de nombre des plus grands tokens. Sachez sur quelle couche vit une coin et quel probl\u00e8me elle r\u00e9sout. \u00c0 lire aussi : <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-a-gas-fee\/\">frais de gas<\/a> et <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-a-smart-contract\/\">contrat intelligent<\/a>.<\/p>\n<p>Pour aller plus loin, voir notre page <a href=\"https:\/\/volity.io\/fr\/crypto\/\">crypto<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comment fonctionne le L1 versus le L2 Une couche 1 (L1) est une blockchain de base comme Bitcoin ou Ethereum qui r\u00e8gle [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":37942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"custom_schema":"","footnotes":""},"categories":[258],"tags":[],"class_list":["post-37261","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossaire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Qu&#039;est-ce que la Layer 1 vs Layer 2<\/title>\n<meta name=\"description\" content=\"La Layer 1 est une blockchain de base r\u00e9glant ses propres transactions. 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