{"id":37285,"date":"2026-05-29T10:05:39","date_gmt":"2026-05-29T10:05:39","guid":{"rendered":"https:\/\/volity.io\/non-classifiee\/what-is-an-atomic-swap\/"},"modified":"2026-06-04T17:07:45","modified_gmt":"2026-06-04T17:07:45","slug":"what-is-an-atomic-swap","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/glossaire\/what-is-an-atomic-swap\/","title":{"rendered":"Qu&rsquo;est-ce qu&rsquo;un atomic swap"},"content":{"rendered":"<h2>Comment fonctionne un atomic swap<\/h2>\n<p>Un atomic swap est un \u00e9change direct d&rsquo;une cryptomonnaie contre une autre entre blockchains diff\u00e9rentes, sans bourse ni interm\u00e9diaire au milieu. Il utilise une astuce de contrat intelligent appel\u00e9e hashed timelock, qui garantit que soit les deux c\u00f4t\u00e9s du swap se compl\u00e8tent, soit aucun. Le mot atomique signifie tout ou rien : il n&rsquo;existe aucun \u00e9tat o\u00f9 une partie est pay\u00e9e et l&rsquo;autre non.<\/p>\n<h2>Exemple chiffr\u00e9<\/h2>\n<p>Vous voulez \u00e9changer une coin sur une cha\u00eene contre une coin sur une autre, directement avec une contrepartie. L&rsquo;atomic swap verrouille les deux d\u00e9p\u00f4ts dans des contrats li\u00e9s : quand vous r\u00e9clamez votre c\u00f4t\u00e9 avec un secret, ce m\u00eame secret lib\u00e8re automatiquement l&rsquo;autre c\u00f4t\u00e9 vers votre contrepartie. Si l&rsquo;une des parties ne compl\u00e8te pas \u00e0 temps, les deux d\u00e9p\u00f4ts se d\u00e9verrouillent et reviennent \u00e0 leurs propri\u00e9taires. Aucun de vous ne peut tromper l&rsquo;autre.<\/p>\n<h2>Atomic swaps versus bourses<\/h2>\n<p>Les atomic swaps suppriment le risque custodial de faire confiance \u00e0 une bourse pour d\u00e9tenir vos fonds, l&rsquo;attrait du trading enti\u00e8rement d\u00e9centralis\u00e9. Le compromis est la complexit\u00e9, une liquidit\u00e9 limit\u00e9e et une ex\u00e9cution plus lente. Sur Volity, trader la crypto en spot ou CFD donne une ex\u00e9cution instantan\u00e9e et une liquidit\u00e9 profonde dans un cadre r\u00e9gul\u00e9, le compromis inverse : moins d&rsquo;autonomie, bien plus de commodit\u00e9 et de vitesse.<\/p>\n<h2>Pourquoi c&rsquo;est important<\/h2>\n<p>Les atomic swaps prouvent que la crypto peut se trader de pair \u00e0 pair entre cha\u00eenes sans interm\u00e9diaire de confiance, mais leur complexit\u00e9 et leur liquidit\u00e9 mince les gardent de niche. Sachez qu&rsquo;ils existent comme l&rsquo;alternative sans confiance aux bourses. \u00c0 lire aussi : <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-a-smart-contract\/\">contrat intelligent<\/a> et <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-defi\/\">DeFi<\/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 un atomic swap Un atomic swap est un \u00e9change direct d&rsquo;une cryptomonnaie contre une autre entre blockchains diff\u00e9rentes, sans bourse [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":37379,"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-37285","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 qu&#039;un atomic swap<\/title>\n<meta name=\"description\" content=\"Un atomic swap est un \u00e9change crypto cross-chain sans tiers ex\u00e9cut\u00e9 par smart contracts. 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