{"id":15791,"date":"2025-05-17T16:21:00","date_gmt":"2025-05-17T16:21:00","guid":{"rendered":"https:\/\/volity.io\/?p=15791"},"modified":"2025-06-27T13:22:48","modified_gmt":"2025-06-27T13:22:48","slug":"quant-qnt","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/crypto\/quant-qnt\/","title":{"rendered":"Qu&rsquo;est-ce que la cryptographie quantique ?"},"content":{"rendered":"\n<p>Quant est un projet bas\u00e9 sur la blockchain, con\u00e7u pour connecter diff\u00e9rents r\u00e9seaux blockchain gr\u00e2ce \u00e0 sa technologie unique. Au c\u0153ur de ce projet se trouve le jeton QNT, qui permet l&rsquo;acc\u00e8s au produit phare du r\u00e9seau Quant&nbsp;: Overledger. Contrairement \u00e0 de nombreux autres projets cryptographiques centr\u00e9s sur une seule cha\u00eene ou un seul \u00e9cosyst\u00e8me, Quant privil\u00e9gie l&rsquo;interop\u00e9rabilit\u00e9. Cela signifie qu&rsquo;il permet \u00e0 diff\u00e9rentes blockchains de communiquer entre elles. Plut\u00f4t pratique, non&nbsp;?<\/p>\n\n\n\n<p>L&rsquo;objectif de Quant n&rsquo;est pas de concurrencer Bitcoin ou Ethereum. Il s&rsquo;agit de rendre l&rsquo;ensemble de l&rsquo;espace cryptographique plus connect\u00e9 et plus utilisable. On peut le consid\u00e9rer comme le ciment qui unit les diff\u00e9rentes blockchains. QNT est le jeton qui alimente ce syst\u00e8me et sert aux frais de licence, d&rsquo;acc\u00e8s et d&rsquo;utilisation sur le r\u00e9seau. Ce n&rsquo;est pas une simple cryptomonnaie. C&rsquo;est un outil con\u00e7u dans un but pr\u00e9cis&nbsp;: faciliter la communication multi-cha\u00eenes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-pourquoi-quant-a-t-il-ete-cree\">Pourquoi Quant a-t-il \u00e9t\u00e9 cr\u00e9\u00e9 ?<\/h2>\n\n\n\n<p>L&rsquo;\u00e9quipe derri\u00e8re Quant a tr\u00e8s t\u00f4t identifi\u00e9 un probl\u00e8me majeur. <a href=\"https:\/\/volity.io\/fr\/crypto\/qu-est-ce-que-la-blockchain\/\"><strong>Les blockchains <\/strong><\/a>\u00e9taient puissantes, mais elles ne pouvaient pas communiquer entre elles. Chaque r\u00e9seau \u00e9tait comme une \u00eele isol\u00e9e. Cela signifiait que les d\u00e9veloppeurs, les banques et les entreprises devaient choisir une seule cha\u00eene et s&rsquo;y tenir, ou construire des ponts complexes et pas toujours s\u00e9curis\u00e9s. Quant a \u00e9t\u00e9 cr\u00e9\u00e9 pour r\u00e9soudre ce probl\u00e8me. L&rsquo;objectif ? D\u00e9velopper une technologie permettant \u00e0 plusieurs blockchains de se connecter, d&rsquo;interagir et de collaborer de mani\u00e8re simple et s\u00e9curis\u00e9e.<\/p>\n\n\n\n<p>Au lieu de cr\u00e9er une nouvelle blockchain, Quant s&rsquo;est concentr\u00e9 sur la cr\u00e9ation d&rsquo;une couche fonctionnelle. C&rsquo;est l\u00e0 qu&rsquo;intervient Overledger. Il permet aux d\u00e9veloppeurs de cr\u00e9er des applications multi-cha\u00eenes sans avoir \u00e0 apprendre tous les langages blockchain. Ainsi, Quant ouvre la voie \u00e0 une adoption plus fluide de la technologie blockchain dans la finance, la sant\u00e9, la logistique, etc. Il s&rsquo;agit moins d&rsquo;un effet de mode que de r\u00e9soudre un probl\u00e8me concret.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-qui-a-cree-quant\">Qui a cr\u00e9\u00e9 Quant ?<\/h2>\n\n\n\n<p>Quant a \u00e9t\u00e9 fond\u00e9e par Gilbert Verdian, expert en cybers\u00e9curit\u00e9 fort de plus de vingt ans d&rsquo;exp\u00e9rience dans les secteurs public et priv\u00e9. Il a notamment occup\u00e9 des postes de <strong>directeur de la s\u00e9curit\u00e9 des syst\u00e8mes d&rsquo;information (RSSI) <\/strong>, de directeur des syst\u00e8mes <strong>d&rsquo;information (DSI) <\/strong>et <strong>de directeur de la technologie (CTO) <\/strong>au sein d&rsquo;organisations telles que le Tr\u00e9sor britannique, le minist\u00e8re de la Justice et des entreprises comme Mastercard et HSBC.<\/p>\n\n\n\n<p>La vision de Verdian pour Quant \u00e9tait de rem\u00e9dier au manque d&rsquo;interop\u00e9rabilit\u00e9 entre les r\u00e9seaux blockchain. Il a initi\u00e9 la cr\u00e9ation de la plateforme Overledger, con\u00e7ue pour connecter diff\u00e9rentes blockchains de mani\u00e8re fluide. De plus, en 2015, il a \u00e9tabli la norme ISO Blockchain TC307, visant \u00e0 standardiser la technologie blockchain \u00e0 l&rsquo;\u00e9chelle mondiale. Quant s&rsquo;est attach\u00e9 \u00e0 permettre aux entreprises et aux gouvernements d&rsquo;exploiter la puissance de la blockchain gr\u00e2ce \u00e0 des solutions s\u00e9curis\u00e9es et interop\u00e9rables.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-comment-fonctionne-quant\">Comment fonctionne Quant ?<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-reseau-overledger\">R\u00e9seau Overledger<\/h3>\n\n\n\n<p>Au c\u0153ur de Quant se trouve le r\u00e9seau Overledger. Il ne s&rsquo;agit pas d&rsquo;une simple blockchain. Il s&rsquo;agit plut\u00f4t d&rsquo;un traducteur universel de blockchains. On peut le consid\u00e9rer comme une couche r\u00e9seau reliant diff\u00e9rents syst\u00e8mes blockchain, leur permettant de communiquer entre eux sans modifier leur propre structure. Ainsi, les banques, les entreprises et les d\u00e9veloppeurs peuvent cr\u00e9er des applications interagissant avec plusieurs blockchains via une plateforme unique et simple. Overledger veille \u00e0 ce qu&rsquo;aucune cha\u00eene ne soit oubli\u00e9e.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-communication-inter-chaines\">Communication inter-cha\u00eenes<\/h3>\n\n\n\n<p>La plupart des blockchains ne parlent pas le m\u00eame langage. C&rsquo;est un probl\u00e8me lorsqu&rsquo;il s&rsquo;agit de transf\u00e9rer des actifs ou des donn\u00e9es entre elles. Quant r\u00e9sout ce probl\u00e8me gr\u00e2ce \u00e0 une v\u00e9ritable communication inter-cha\u00eenes. Overledger permet aux donn\u00e9es, aux contrats intelligents et m\u00eame \u00e0 des applications enti\u00e8res de circuler entre diff\u00e9rentes cha\u00eenes. Ainsi, une application de paiement bas\u00e9e sur Ethereum peut communiquer en toute fluidit\u00e9 avec un syst\u00e8me de cha\u00eene d&rsquo;approvisionnement sur Hyperledger ou un projet fonctionnant sur Bitcoin.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-utilitaire-de-jeton-qnt\">Utilitaire de jeton QNT<\/h3>\n\n\n\n<p>QNT est le moteur de tout. Ce n&rsquo;est pas seulement une cryptomonnaie \u00e0 \u00e9changer. QNT est n\u00e9cessaire pour acc\u00e9der \u00e0 l&rsquo;\u00e9cosyst\u00e8me Overledger. Les d\u00e9veloppeurs l&rsquo;utilisent pour payer leurs licences, les utilisateurs le stakent pour obtenir des services, et les entreprises en ont besoin pour interagir avec le r\u00e9seau. QNT assure le bon fonctionnement et la s\u00e9curit\u00e9 de tout en garantissant que seuls les participants v\u00e9rifi\u00e9s utilisent le syst\u00e8me. Donc, si vous souhaitez d\u00e9velopper, utiliser ou faire \u00e9voluer Quant, vous avez besoin de QNT.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-que-pouvez-vous-faire-avec-qnt-nbsp\">Que pouvez-vous faire avec QNT&nbsp;?<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Utilisez QNT pour acc\u00e9der et obtenir une licence pour le r\u00e9seau Overledger.<\/li>\n\n\n\n<li>Misez des jetons QNT pour gagner des r\u00e9compenses et soutenir le r\u00e9seau.<\/li>\n\n\n\n<li>Payer les frais pour les transactions et les services sur Quant.<\/li>\n\n\n\n<li>Transf\u00e9rez des donn\u00e9es et des actifs en toute s\u00e9curit\u00e9 sur plusieurs blockchains.<\/li>\n\n\n\n<li>Activez l\u2019int\u00e9gration de la blockchain pour les solutions d\u2019entreprise.<\/li>\n\n\n\n<li>Rejoignez la gouvernance et la prise de d\u00e9cision au sein du r\u00e9seau.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-comparaison-de-quant-et-des-autres-plateformes-blockchain\">Comparaison de Quant et des autres plateformes Blockchain<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-ethereum\">Ethereum<\/h3>\n\n\n\n<p><a href=\"https:\/\/volity.io\/fr\/crypto\/ethereum\/\"><strong>Ethereum <\/strong><\/a>a lanc\u00e9 la r\u00e9volution des contrats intelligents. Il alimente de nombreuses applications d\u00e9centralis\u00e9es, mais se heurte \u00e0 des probl\u00e8mes de frais \u00e9lev\u00e9s et de d\u00e9bits plus lents. Quant ne remplace pas Ethereum. Au contraire, il connecte Ethereum \u00e0 d&rsquo;autres blockchains et permet aux applications de fonctionner sur plusieurs cha\u00eenes sans les co\u00fbts et les d\u00e9lais habituels.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-pois\">Pois<\/h3>\n\n\n\n<p>Polkadot se concentre \u00e9galement sur la connexion de blockchains. Il utilise des parachains pour relier des cha\u00eenes distinctes, mais chaque projet doit s&rsquo;appuyer sur le framework de Polkadot. Overledger de Quant fonctionne diff\u00e9remment en connectant directement les blockchains existantes sans les forcer \u00e0 basculer ou \u00e0 les reconstruire.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-cosmos\">Cosmos<\/h3>\n\n\n\n<p><a href=\"https:\/\/volity.io\/fr\/crypto\/cosmos\/\"><strong>Cosmos <\/strong><\/a>vise \u00e0 cr\u00e9er un Internet de blockchains gr\u00e2ce \u00e0 son mod\u00e8le en \u00e9toile. Pour y acc\u00e9der, les cha\u00eenes doivent adopter son protocole. Quant se distingue par son interop\u00e9rabilit\u00e9 sans que les blockchains aient \u00e0 modifier leurs protocoles, ce qui facilite la connexion entre diff\u00e9rents syst\u00e8mes pour les entreprises et les d\u00e9veloppeurs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-ou-acheter-et-stocker-qnt\">O\u00f9 acheter et stocker QNT<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-comment-acheter-du-qnt\">Comment acheter du QNT<\/h3>\n\n\n\n<p>Vous pouvez acheter des jetons QNT sur des plateformes d&rsquo;\u00e9change de cryptomonnaies populaires comme Binance, Coinbase, Kraken et KuCoin. La plupart des plateformes vous permettent d&rsquo;acheter des QNT avec des devises fiduciaires ou d&rsquo;\u00e9changer d&rsquo;autres cryptomonnaies. En consultant le site officiel de Quant, vous trouverez les options d&rsquo;achat les plus s\u00fbres et les plus efficaces.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-comment-conserver-le-qnt\">Comment conserver le QNT<\/h3>\n\n\n\n<p>Stocker vos QNT en toute s\u00e9curit\u00e9 est primordial. Vous pouvez conserver vos jetons dans des portefeuilles d&rsquo;\u00e9change si vous pr\u00e9voyez d&rsquo;effectuer des transactions fr\u00e9quentes. Cependant, pour une s\u00e9curit\u00e9 accrue, utilisez des portefeuilles mat\u00e9riels comme Ledger ou Trezor qui prennent en charge les QNT. Les portefeuilles logiciels compatibles avec <strong>les jetons Ethereum (ERC-20) <\/strong>peuvent \u00e9galement stocker vos QNT en toute s\u00e9curit\u00e9 pour une utilisation quotidienne.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-quant-est-il-sur-et-legitime-nbsp\">Quant est-il s\u00fbr et l\u00e9gitime&nbsp;?<\/h2>\n\n\n\n<p>Quant est un projet l\u00e9gitime b\u00e9n\u00e9ficiant d&rsquo;un soutien solide et clairement ax\u00e9 sur la s\u00e9curit\u00e9. L&rsquo;\u00e9quipe effectue des audits ind\u00e9pendants pour d\u00e9tecter les vuln\u00e9rabilit\u00e9s de ses contrats intelligents, ce qui contribue \u00e0 prot\u00e9ger le r\u00e9seau contre les piratages. De plus, Quant s&rsquo;appuie sur la blockchain s\u00e9curis\u00e9e d&rsquo;Ethereum, ce qui ajoute une couche de protection suppl\u00e9mentaire.<\/p>\n\n\n\n<p>Le projet est dirig\u00e9 par des fondateurs exp\u00e9riment\u00e9s et r\u00e9pond aux normes r\u00e9glementaires en vigueur dans des pays comme la Suisse. De nombreuses entreprises font confiance \u00e0 Quant pour la cr\u00e9ation de solutions blockchain. Cependant, comme tout investissement en cryptomonnaies, il comporte des risques&nbsp;; il est donc conseill\u00e9 de se renseigner soigneusement avant d&rsquo;investir.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-reflexions-finales\">R\u00e9flexions finales<\/h2>\n\n\n\n<p>Quant se distingue par son utilit\u00e9 concr\u00e8te et sa volont\u00e9 de r\u00e9soudre un probl\u00e8me majeur en connectant les blockchains. C&rsquo;est un peu comme un projet cryptographique qui vise \u00e0 devenir le prochain Bitcoin. Il propose une solution fonctionnelle via Overledger, qui aide les entreprises et les d\u00e9veloppeurs \u00e0 d\u00e9velopper leurs activit\u00e9s sur plusieurs r\u00e9seaux sans difficult\u00e9.<\/p>\n\n\n\n<p>QNT alimente un syst\u00e8me con\u00e7u pour la croissance, avec une \u00e9quipe solide, des cas d&rsquo;utilisation concrets et des objectifs clairs. Si vous \u00eates int\u00e9ress\u00e9 par des projets qui r\u00e9solvent des probl\u00e8mes pratiques et font progresser l&rsquo;adoption de la blockchain, Quant pourrait \u00eatre une solution int\u00e9ressante \u00e0 suivre.<\/p>\n<hr><h2 class=\"wp-block-heading\" id=\"related-guides\">Guides connexes<\/h2><ul><li><a href=\"https:\/\/volity.io\/fr\/forex\/bitcoin\/\">Qu&rsquo;est-ce que le Bitcoin (BTC) ?<\/a><\/li><li><a href=\"https:\/\/volity.io\/fr\/crypto\/ethereum\/\">Ethereum expliqu\u00e9<\/a><\/li><li><a href=\"https:\/\/volity.io\/fr\/crypto\/altcoin\/\">Qu&rsquo;est-ce qu&rsquo;une altcoin ?<\/a><\/li><li><a href=\"https:\/\/volity.io\/fr\/forex\/forex-trading-pour-debutants\/\">Forex Trading pour d\u00e9butants<\/a><\/li><li><a href=\"https:\/\/volity.io\/fr\/forex\/meilleures-strategies-de-trading-forex\/\">Meilleures strat\u00e9gies de trading forex<\/a><\/li><\/ul>","protected":false},"excerpt":{"rendered":"<p>Quant est un projet bas\u00e9 sur la blockchain, con\u00e7u pour connecter diff\u00e9rents r\u00e9seaux blockchain gr\u00e2ce \u00e0 sa technologie unique. Au c\u0153ur de [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":14697,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"custom_schema":"","footnotes":""},"categories":[205],"tags":[],"class_list":["post-15791","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-crypto"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.5 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Qu&#039;est-ce que la cryptographie quantique ? - Volity<\/title>\n<meta name=\"description\" content=\"La crypto-monnaie Quant (QNT) se concentre sur l&#039;interop\u00e9rabilit\u00e9, permettant \u00e0 diff\u00e9rentes blockchains et syst\u00e8mes existants de se connecter \u00e0 l&#039;aide de son r\u00e9seau Overledger.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/volity.io\/fr\/crypto\/quant-qnt\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Qu&#039;est-ce que la cryptographie quantique ? - 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