{"id":34760,"date":"2026-07-03T15:14:42","date_gmt":"2026-07-03T15:14:42","guid":{"rendered":"https:\/\/99bitcoins.com\/fr\/?p=34760"},"modified":"2026-06-30T14:15:55","modified_gmt":"2026-06-30T14:15:55","slug":"xrp-david-schwartz-propose-un-plan-contre-le-front-running","status":"publish","type":"post","link":"https:\/\/99bitcoins.com\/fr\/actu\/xrp-david-schwartz-propose-un-plan-contre-le-front-running\/","title":{"rendered":"XRP : David Schwartz propose un plan contre le front-running"},"content":{"rendered":"\r\n<p class=\"wp-block-paragraph\">Dans l&rsquo;actualit\u00e9 de <strong>XRP<\/strong> aujourd&rsquo;hui, David Schwartz, CTO Emeritus de <strong>Ripple<\/strong> et cofondateur du <strong>XRP Ledger<\/strong>, a propos\u00e9 un m\u00e9canisme de r\u00e9servation de transactions afin de pr\u00e9venir le front-running et les attaques sandwich sur l&rsquo;\u00e9change d\u00e9centralis\u00e9 (DEX) du protocole.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Cette proposition intervient alors que les discussions communautaires autour de l&rsquo;<a class=\"general-link\" href=\"https:\/\/99bitcoins.com\/news\/altcoins\/xrp-ripple-price-prediction-16-trillion-payments\/\" target=\"_blank\" rel=\"noopener\">infrastructure de paiement du XRP Ledger<\/a> s&rsquo;intensifient, co\u00efncidant avec le vote actif de la communaut\u00e9 sur la mise \u00e0 niveau XRPL 3.2.0.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">L&rsquo;initiative de Schwartz survient alors que la paire XRP\/USD s&rsquo;\u00e9change \u00e0 1,04 $, en baisse de -0,2 % sur la journ\u00e9e, se rapprochant dangereusement d&rsquo;une rupture du support technique et psychologique cl\u00e9 de 1 $. Un passage sous ce seuil pourrait entra\u00eener un retour vers les 0,80 $.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Concerns have been raised about the possibility of front running or transaction sandwich attacks on XRPL payments and offer crossing.<br><br>For the reasons I&#39;ve explained, I&#39;m not that concerned about this issue. But I have a proposal for a fairly simple scheme that would eliminate\u2026 <a href=\"https:\/\/t.co\/lnhTv1bhBK\" rel=\"nofollow\" target=\"_blank\">https:\/\/t.co\/lnhTv1bhBK<\/a><\/p>&mdash; David &#39;JoelKatz&#39; Schwartz (@JoelKatz) <a href=\"https:\/\/x.com\/JoelKatz\/status\/2071466518509244878?ref_src=twsrc%5Etfw\" rel=\"nofollow\" target=\"_blank\">June 29, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Actualit\u00e9 XRP : Le fonctionnement concret de la proposition TxnReserve<\/h2>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Le m\u00e9canisme central introduit un nouveau type de transaction, <strong>TxnReserve<\/strong>, ainsi qu&rsquo;un nouvel objet de registre, <strong>ReservedTxns<\/strong>. Ce dernier contient une liste d&rsquo;identifiants de transactions assign\u00e9s \u00e0 un registre futur sp\u00e9cifique. Pour r\u00e9server un cr\u00e9neau, l&rsquo;utilisateur doit payer au moins le double des frais de transaction habituels et sp\u00e9cifier \u00e0 l&rsquo;avance un num\u00e9ro de s\u00e9quence de registre ainsi qu&rsquo;un ID de transaction.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Les r\u00e9servations sont limit\u00e9es \u00e0 32 emplacements par registre et restreintes aux 16 registres suivants. Point crucial : la transaction r\u00e9elle n&rsquo;est diffus\u00e9e qu&rsquo;une fois que l&rsquo;ensemble de consensus du registre pr\u00e9c\u00e9dent est connu. Ce timing emp\u00eache les attaquants potentiels d&rsquo;avoir la visibilit\u00e9 n\u00e9cessaire pour agir. Les transactions r\u00e9serv\u00e9es sont ensuite ex\u00e9cut\u00e9es en priorit\u00e9, selon l&rsquo;ordre de r\u00e9servation, avant toutes les autres transactions de ce registre.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Schwartz a d\u00e9crit cette protection avec clart\u00e9 : \u00ab Cela garantit que vous pouvez ex\u00e9cuter votre transaction avant toute transaction form\u00e9e apr\u00e8s la divulgation de la v\u00f4tre. Cette approche est id\u00e9ale pour toute op\u00e9ration o\u00f9 l&rsquo;on veut s&rsquo;assurer d&rsquo;\u00e9viter le front-running ou une attaque sandwich. \u00bb<\/p>\r\n\r\n\r\n<h2 class=\"wp-block-heading\">Le probl\u00e8me que David Schwartz tente de r\u00e9soudre<\/h2>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">L&rsquo;inqui\u00e9tude soulev\u00e9e par le compte communautaire XRPresso.io r\u00e9side dans le fait que les transactions sur le XRPL sont visibles publiquement dans une file d&rsquo;attente avant la cl\u00f4ture d&rsquo;un registre.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Les validateurs et les n\u0153uds bien connect\u00e9s peuvent inspecter les transactions en attente pour \u00e9valuer la rentabilit\u00e9 d&rsquo;une attaque sandwich \u2014 qui consiste \u00e0 placer des ordres avant et apr\u00e8s une transaction cible pour en extraire de la valeur. Ils pourraient alors spammer le r\u00e9seau pour manipuler l&rsquo;ordre canonique d\u00e9terministe d\u00e9cid\u00e9 par les hachages de transactions.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Il s&rsquo;agit d&rsquo;une variante de ce que l&rsquo;industrie DeFi appelle le <strong>MEV<\/strong> (maximal extractable value) : le profit accessible aux producteurs de blocs ou validateurs capables de r\u00e9ordonner, d&rsquo;ins\u00e9rer ou de censurer des transactions.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Cette dynamique affecte d\u00e9j\u00e0 les traders sur d&rsquo;autres cha\u00eenes ; les <a class=\"general-link\" href=\"https:\/\/99bitcoins.com\/news\/presales\/solana-memecoins-dex-volume-sol-price-prediction-july-2026\/\" target=\"_blank\" rel=\"noopener\">probl\u00e8mes de MEV et de front-running sur les DEX \u00e0 haut volume<\/a> sont devenus un risque structurel standard pour les traders on-chain \u00e0 travers l&rsquo;industrie.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Bien que Schwartz reconnaisse l&rsquo;exposition th\u00e9orique, il a temp\u00e9r\u00e9 sa gravit\u00e9. Il note que les validateurs devraient simultan\u00e9ment maintenir une liquidit\u00e9 \u00e9lev\u00e9e pour que les volumes soient attractifs, et une liquidit\u00e9 faible pour faire bouger les prix \u00e0 moindre co\u00fbt \u2014 deux conditions contradictoires.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">\u00ab Si plusieurs validateurs conspiraient, ou si un seul tentait de le faire, cela serait flagrant pour tout le monde \u00bb, a-t-il affirm\u00e9, ajoutant qu&rsquo;aucune tentative r\u00e9elle de front-running n&rsquo;a \u00e9t\u00e9 signal\u00e9e sur le DEX du XRPL en dehors des d\u00e9monstrations de faisabilit\u00e9.<\/p>\r\n\r\n\r\n<h2 class=\"wp-block-heading\">La visibilit\u00e9 plut\u00f4t que la priorit\u00e9 des frais : un d\u00e9bat ouvert<\/h2>\r\n\r\n\r\n<p class=\"wp-block-paragraph\"><blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\"><a href=\"https:\/\/x.com\/XRPLF?ref_src=twsrc%5Etfw\" rel=\"nofollow\" target=\"_blank\">@XRPLF<\/a> <a href=\"https:\/\/x.com\/Vet_X0?ref_src=twsrc%5Etfw\" rel=\"nofollow\" target=\"_blank\">@Vet_X0<\/a>  <br><br>Hey Vet or XRPL foundation: what do next steps in this process look like? <br><br>David made a write down \/ technical proposal here.<br>I\u2019ve also made one in the thread for the confidentiality provisioning (the more fulsome solve imo).<br><br>Just wondering how this discussion\u2026 <a href=\"https:\/\/t.co\/N8JsjVRSfM\" rel=\"nofollow\" target=\"_blank\">https:\/\/t.co\/N8JsjVRSfM<\/a><\/p>&mdash; XRPresso.io (@xrpresso_io) <a href=\"https:\/\/x.com\/xrpresso_io\/status\/2071725554139529542?ref_src=twsrc%5Etfw\" rel=\"nofollow\" target=\"_blank\">June 29, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Par ailleurs, XRPresso.io a soulign\u00e9 que si l&rsquo;id\u00e9e de r\u00e9servation est int\u00e9ressante, l&rsquo;exigence de frais doubl\u00e9s complique le processus sans traiter le probl\u00e8me de fond : la visibilit\u00e9 pr\u00e9-validation. Ils pr\u00e9conisent plut\u00f4t une solution de confidentialit\u00e9 cibl\u00e9e pour les d\u00e9tails des ordres en attente.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Cette approche, similaire \u00e0 celle sugg\u00e9r\u00e9e par Changpeng Zhao (cofondateur de Binance), utilise la cryptographie zero-knowledge pour masquer les donn\u00e9es des ordres jusqu&rsquo;\u00e0 leur ex\u00e9cution. Cependant, certains critiques craignent que cette m\u00e9thode ne recr\u00e9e des dynamiques d&rsquo;informations privil\u00e9gi\u00e9es, ce que les blockchains publiques cherchent justement \u00e0 \u00e9liminer.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Les discussions en cours sur la proposition TxnReserve sugg\u00e8rent une r\u00e9flexion plus large sur l&rsquo;\u00e9volution du protocole XRPL et ses incitations. Aucun vote formel n&rsquo;a encore eu lieu et les sp\u00e9cifications ne sont pas finalis\u00e9es. La direction que prendra la communaut\u00e9 \u2014 priorit\u00e9 bas\u00e9e sur les frais, solution de confidentialit\u00e9 ou mod\u00e8le hybride \u2014 influencera l&rsquo;infrastructure des teneurs de march\u00e9 automatis\u00e9s (AMM) et des DEX \u00e0 mesure que le trading on-chain se d\u00e9veloppe.<\/p>\r\n\r\n\r\n<p class=\"wp-block-paragraph\">Enfin, les progr\u00e8s r\u00e9glementaires de <strong>Ripple<\/strong> au Luxembourg sous le r\u00e9gime MiCA soulignent l&rsquo;importance de garantir l&rsquo;\u00e9quit\u00e9 des DEX pour r\u00e9pondre aux exigences institutionnelles, au-del\u00e0 du simple trading de d\u00e9tail.<\/p>\r\n","protected":false},"excerpt":{"rendered":"<p>David Schwartz (Ripple) propose TxnReserve pour prot\u00e9ger le XRP Ledger contre les attaques sandwich alors que le XRP lutte pour maintenir le support de 1 $.<\/p>\n","protected":false},"author":135978,"featured_media":34759,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[6],"tags":[],"coin":[15],"class_list":["post-34760","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actu"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>XRP : David Schwartz propose un plan contre le front-running<\/title>\n<meta name=\"description\" content=\"David Schwartz (Ripple) propose TxnReserve pour prot\u00e9ger le XRP Ledger contre les attaques sandwich alors que le XRP lutte pour maintenir le support de 1 $.\" \/>\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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