{"id":2856,"date":"2026-04-29T07:59:43","date_gmt":"2026-04-29T07:59:43","guid":{"rendered":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/04\/29\/les-anciens-portefeuilles-bitcoin-pourraient-ne-jamais-etre-totalement-surs-previent-le-cto-de-ledger\/"},"modified":"2026-04-29T07:59:43","modified_gmt":"2026-04-29T07:59:43","slug":"les-anciens-portefeuilles-bitcoin-pourraient-ne-jamais-etre-totalement-surs-previent-le-cto-de-ledger","status":"publish","type":"post","link":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/04\/29\/les-anciens-portefeuilles-bitcoin-pourraient-ne-jamais-etre-totalement-surs-previent-le-cto-de-ledger\/","title":{"rendered":"Les anciens portefeuilles Bitcoin pourraient ne jamais \u00eatre totalement s\u00fbrs, pr\u00e9vient le CTO de Ledger"},"content":{"rendered":"<p><strong><em>Le CTO de Ledger avertit que les anciens portefeuilles Bitcoin font face \u00e0 des risques quantiques permanents. BIP-361 propose une solution, mais les pi\u00e8ces d&rsquo;avant 2013 pourraient n&rsquo;avoir aucune voie de r\u00e9cup\u00e9ration.<\/em><\/strong><\/p>\n<p><span style=\"font-weight: 400\">Une nouvelle proposition d&rsquo;am\u00e9lioration de Bitcoin fait parler d&rsquo;elle dans la communaut\u00e9 crypto. BIP-361 cible l&rsquo;un des d\u00e9fis les plus complexes de l&rsquo;avenir de Bitcoin : la migration quantique. <\/span><\/p>\n<p><span style=\"font-weight: 400\">La proposition d\u00e9crit comment les d\u00e9tenteurs de Bitcoin peuvent d\u00e9placer leurs fonds vers des adresses r\u00e9sistantes aux quantiques. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Cependant, le Chief Technology Officer de Ledger a signal\u00e9 une pr\u00e9occupation s\u00e9rieuse. Certains anciens portefeuilles Bitcoin pourraient tout simplement ne jamais \u00eatre r\u00e9cup\u00e9rables.<\/span><\/p>\n<p><b>Lecture connexe :<\/b><span style=\"font-weight: 400\"> <\/span><\/p>\n<p>https:\/\/www.livebitcoinnews.com\/new-mara-foundation-aims-to-protect-bitcoin-from-quantum-breakage\/<\/p>\n<h2><b>BIP-361 et le plan de migration post-quantique de Bitcoin<\/b><\/h2>\n<p><span style=\"font-weight: 400\">BIP-361 aborde le probl\u00e8me d&rsquo;incitation derri\u00e8re la migration post-quantique. Son objectif n&rsquo;est pas de choisir un sch\u00e9ma de signature sp\u00e9cifique. Au lieu de cela, il traite de la mani\u00e8re d&rsquo;amener les d\u00e9tenteurs \u00e0 d\u00e9placer leurs fonds en toute s\u00e9curit\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400\">La proposition d\u00e9finit trois phases. La phase A, environ trois ans apr\u00e8s l&rsquo;activation, interdit les nouvelles sorties vers les adresses ECDSA ou Schnorr. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Les fonds existants peuvent toujours \u00eatre d\u00e9plac\u00e9s, mais uniquement vers des scripts post-quantiques. La phase B, deux ans plus tard, rend les d\u00e9penses ECDSA et Schnorr totalement invalides. Les UTXO non migr\u00e9s deviennent gel\u00e9s \u00e0 ce moment-l\u00e0. <\/span><\/p>\n<p><span style=\"font-weight: 400\">La phase C reste ind\u00e9finie et c&rsquo;est l\u00e0 que commence la v\u00e9ritable complexit\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400\">La logique de la phase A \u00e0 la phase B est simple. Plafonner l&rsquo;exposition vuln\u00e9rable, puis la supprimer compl\u00e8tement. <\/span><\/p>\n<p><span style=\"font-weight: 400\">La phase C, cependant, soul\u00e8ve des questions politiques et \u00e9thiques que les autres phases ne soul\u00e8vent pas.<\/span><\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">BIP-361 (<a href=\"https:\/\/t.co\/PJkbk1Xuu6\">https:\/\/t.co\/PJkbk1Xuu6<\/a>) in one sentence: it tackles the incentive problem of the Post-Quantum migration, how you actually get holders to move, without trying to settle the technical parameters of it (which signature scheme, which output type). Those are deferred to\u2026<\/p>\n<p>&mdash; Charles Guillemet (@P3b7_) <a href=\"https:\/\/twitter.com\/P3b7_\/status\/2049099492373168599?ref_src=twsrc%5Etfw\">April 28, 2026<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2><b>Pourquoi les ordinateurs quantiques changent les r\u00e8gles de propri\u00e9t\u00e9<\/b><\/h2>\n<p><span style=\"font-weight: 400\">Dans un monde post-quantique, conna\u00eetre une cl\u00e9 priv\u00e9e ne prouve plus la propri\u00e9t\u00e9. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Un ordinateur quantique cryptographiquement pertinent, souvent appel\u00e9 CRQC, peut d\u00e9river une cl\u00e9 priv\u00e9e directement \u00e0 partir d&rsquo;une cl\u00e9 publique. Cela brise l&rsquo;hypoth\u00e8se sur laquelle la <\/span><a href=\"https:\/\/www.livebitcoinnews.com\/quantum-test-breaks-ecc-key-raises-new-bitcoin-security-concerns\/\"><span style=\"font-weight: 400\">s\u00e9curit\u00e9 de Bitcoin<\/span><\/a><span style=\"font-weight: 400\"> a toujours repos\u00e9.<\/span><\/p>\n<p><span style=\"font-weight: 400\">BIP-361 sugg\u00e8re une solution \u00e9l\u00e9gante pour la phase C. Elle implique une preuve \u00e0 divulgation nulle de connaissance de la phrase de d\u00e9part BIP-39. La d\u00e9rivation de BIP-39 \u00e0 BIP-32 repose sur une cha\u00eene de hachage unidirectionnelle. Les ordinateurs quantiques ne peuvent pas l&rsquo;inverser. <\/span><\/p>\n<p><span style=\"font-weight: 400\">Un propri\u00e9taire de portefeuille prouverait la connaissance de sa phrase de d\u00e9part sans la r\u00e9v\u00e9ler, et la blockchain v\u00e9rifierait la preuve et lib\u00e9rerait les fonds.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Cette approche comporte \u00e9galement un avantage plus large. La v\u00e9rification native de <\/span><a href=\"https:\/\/en.wikipedia.org\/wiki\/Zero-knowledge_proof\"><span style=\"font-weight: 400\">preuve ZK<\/span><\/a><span style=\"font-weight: 400\"> sur Bitcoin pourrait ouvrir la voie \u00e0 des rollups de validit\u00e9, des am\u00e9liorations de confidentialit\u00e9 et des syst\u00e8mes de preuve succincts.<\/span><\/p>\n<h2><b>Les pi\u00e8ces Bitcoin d&rsquo;avant 2013 sont confront\u00e9es \u00e0 un probl\u00e8me diff\u00e9rent<\/b><\/h2>\n<p><span style=\"font-weight: 400\">BIP-39 n&rsquo;est arriv\u00e9 qu&rsquo;en 2013. <\/span><\/p>\n<p><span style=\"font-weight: 400\">BIP-32 est arriv\u00e9 fin 2012. Les pi\u00e8ces cr\u00e9\u00e9es avant ces normes n&rsquo;ont pas de phrase de d\u00e9part qui leur est associ\u00e9e. <\/span><\/p>\n<p><span style=\"font-weight: 400\">De nombreuses premi\u00e8res sorties Bitcoin, en particulier les pi\u00e8ces Pay-to-Public-Key, ont d\u00e9j\u00e0 leurs cl\u00e9s publiques expos\u00e9es sur la cha\u00eene.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Pour ces UTXO, la r\u00e9cup\u00e9ration bas\u00e9e sur ZK est structurellement impossible. BIP-361 le reconna\u00eet directement. <\/span><\/p>\n<p><span style=\"font-weight: 400\">La proposition se rabat sur un m\u00e9canisme de type sablier pour ces cas, qui implique des d\u00e9penses limit\u00e9es en taux plut\u00f4t qu&rsquo;une preuve cryptographique.<\/span><\/p>\n<p><span style=\"font-weight: 400\">C&rsquo;est la lacune non r\u00e9solue de la proposition. BIP-361 fournit le bon cadre, mais la phase C ne r\u00e9sout qu&rsquo;une partie du probl\u00e8me. Les <\/span><a href=\"https:\/\/www.livebitcoinnews.com\/strive-acquires-789-btc-expands-treasury-holdings-beyond-14000-btc\/\"><span style=\"font-weight: 400\">d\u00e9tentions de Bitcoin<\/span><\/a><span style=\"font-weight: 400\"> les plus anciennes restent les plus difficiles \u00e0 prot\u00e9ger.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le CTO de Ledger avertit que les anciens portefeuilles Bitcoin font face \u00e0 des risques quantiques permanents. BIP-361 propose une solution, mais les pi\u00e8ces d&rsquo;avant 2013 pourraient n&rsquo;avoir aucune voie de r\u00e9cup\u00e9ration. Une nouvelle proposition d&rsquo;am\u00e9lioration de Bitcoin fait parler d&rsquo;elle dans la communaut\u00e9 crypto. BIP-361 cible l&rsquo;un des d\u00e9fis les plus complexes de l&rsquo;avenir [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":2855,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[285,7],"tags":[],"class_list":["post-2856","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin-infrastructure","category-bitcoin-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les anciens portefeuilles Bitcoin pourraient ne jamais \u00eatre totalement s\u00fbrs, pr\u00e9vient le CTO de Ledger - France Live Bitcoin News<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/global.livebitcoinnews.com\/fr\/2026\/04\/29\/les-anciens-portefeuilles-bitcoin-pourraient-ne-jamais-etre-totalement-surs-previent-le-cto-de-ledger\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les anciens portefeuilles Bitcoin pourraient ne jamais \u00eatre totalement s\u00fbrs, pr\u00e9vient le CTO de Ledger - France Live Bitcoin News\" \/>\n<meta property=\"og:description\" content=\"Le CTO de Ledger avertit que les anciens portefeuilles Bitcoin font face \u00e0 des risques quantiques permanents. 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BIP-361 propose une solution, mais les pi\u00e8ces d&rsquo;avant 2013 pourraient n&rsquo;avoir aucune voie de r\u00e9cup\u00e9ration. Une nouvelle proposition d&rsquo;am\u00e9lioration de Bitcoin fait parler d&rsquo;elle dans la communaut\u00e9 crypto. 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