{"id":3272,"date":"2026-05-02T19:09:21","date_gmt":"2026-05-02T19:09:21","guid":{"rendered":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/05\/02\/un-chercheur-de-paradigm-propose-un-plan-de-sauvegarde-resistant-aux-quantiques-pour-bitcoin\/"},"modified":"2026-05-02T19:09:21","modified_gmt":"2026-05-02T19:09:21","slug":"un-chercheur-de-paradigm-propose-un-plan-de-sauvegarde-resistant-aux-quantiques-pour-bitcoin","status":"publish","type":"post","link":"https:\/\/global.livebitcoinnews.com\/fr\/2026\/05\/02\/un-chercheur-de-paradigm-propose-un-plan-de-sauvegarde-resistant-aux-quantiques-pour-bitcoin\/","title":{"rendered":"Un chercheur de Paradigm propose un plan de sauvegarde r\u00e9sistant aux quantiques pour Bitcoin"},"content":{"rendered":"<ul>\n<li style=\"font-weight: 400\"><em><span style=\"font-weight: 400\">Le chercheur de Paradigm, Dan Robinson, a propos\u00e9 des PACT, permettant aux d\u00e9tenteurs de Bitcoin d&rsquo;horodater silencieusement la propri\u00e9t\u00e9 des cl\u00e9s, sans aucun co\u00fbt en cha\u00eene.<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><\/em><\/li>\n<li style=\"font-weight: 400\"><em><span style=\"font-weight: 400\">Les 1,1 million de BTC de Satoshi Nakamoto, d\u2019une valeur de plus de 75 milliards de dollars, se trouvent dans des portefeuilles que les plans de sauvetage quantiques existants ne peuvent pas couvrir.<\/span><span style=\"font-weight: 400\"><br \/>\n<\/span><\/em><\/li>\n<li style=\"font-weight: 400\"><em><span style=\"font-weight: 400\">Une preuve STARK li\u00e9e \u00e0 un horodatage pr\u00e9alable permettrait aux d\u00e9tenteurs de r\u00e9cup\u00e9rer les fonds expir\u00e9s sans r\u00e9v\u00e9ler les d\u00e9tails de la cl\u00e9 priv\u00e9e.<\/span><\/em><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">Un chercheur de Paradigm a propos\u00e9 un plan de sauvegarde quantique r\u00e9sistant pour Bitcoin qui permet aux d\u00e9tenteurs de prot\u00e9ger leurs fonds en silence et sans aucune action en cha\u00eene.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Dan Robinson<\/span><a href=\"https:\/\/www.paradigm.xyz\/2026\/05\/pacts-protecting-your-bitcoin-from-a-quantum-sunset\"><span style=\"font-weight: 400\">publi\u00e9<\/span><\/a><span style=\"font-weight: 400\">le concept le 1er mai 2026, introduisant les horodatages de contr\u00f4le d&rsquo;adresse prouvables, ou PACT.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le protocole cible les adresses dont les cl\u00e9s publiques sont expos\u00e9es, qui restent vuln\u00e9rables au vol par des ordinateurs quantiques cryptographiquement pertinents. Robinson fait valoir que les d\u00e9tenteurs peuvent agir aujourd&rsquo;hui, avant qu&rsquo;une mise \u00e0 niveau du protocole ne soit n\u00e9cessaire.<\/span><\/p>\n<h2><b>Les arguments de Robinson en faveur d\u2019une mesure d\u2019autoprotection silencieuse<\/b><\/h2>\n<p><span style=\"font-weight: 400\">Robinson a construit sa proposition autour d\u2019une pr\u00e9occupation simple : les d\u00e9tenteurs de Bitcoin dont les cl\u00e9s publiques sont expos\u00e9es n\u2019ont aujourd\u2019hui aucun moyen discret de se prot\u00e9ger.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Un ordinateur quantique suffisamment puissant pour d\u00e9river des cl\u00e9s priv\u00e9es pourrait voler des centaines de milliards de dollars de Bitcoin.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Adresses li\u00e9es \u00e0<\/span><a href=\"https:\/\/www.livebitcoinnews.com\/is-jack-dorsey-really-satoshi-nakamoto-why-its-possible\/\"><span style=\"font-weight: 400\">Satoshi Nakamoto<\/span><\/a><span style=\"font-weight: 400\">\u00e0 lui seul, il d\u00e9tient environ 1,1 million de BTC, d\u2019une valeur de plus de 75 milliards de dollars aux prix actuels. Ces portefeuilles sont ant\u00e9rieurs au BIP-32, ce qui les laisse en dehors du champ d&rsquo;application des propositions de sauvetage existantes.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le protocole PACT r\u00e9sout ce probl\u00e8me en permettant aux d\u00e9tenteurs d&rsquo;horodater une preuve cryptographique de propri\u00e9t\u00e9 de la cl\u00e9 \u00e0 l&rsquo;aide d&rsquo;OpenTimestamps.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le service est gratuit, open source et regroupe de nombreux engagements en une seule transaction Bitcoin.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Aucune transaction n&rsquo;est requise de la part du titulaire et rien sur son adresse ou son identit\u00e9 n&rsquo;est r\u00e9v\u00e9l\u00e9. L&rsquo;engagement n&rsquo;expose qu&rsquo;un hachage opaque, rendant le processus enti\u00e8rement silencieux.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Pour cr\u00e9er un PACT, un d\u00e9tenteur g\u00e9n\u00e8re un sel secret de 256 bits et produit un message complet BIP-322 prouvant le contr\u00f4le de son adresse vuln\u00e9rable.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Cette preuve et ce sel sont ensuite hach\u00e9s dans un engagement, qui est horodat\u00e9 sur la blockchain Bitcoin via OpenTimestamps.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le titulaire stocke le fichier de sel, de preuve et d&rsquo;horodatage en toute s\u00e9curit\u00e9 en tant qu&rsquo;artefact de r\u00e9cup\u00e9ration. \u00c0 aucun moment ces informations ne sont partag\u00e9es publiquement ou diffus\u00e9es sur le r\u00e9seau.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Robinson a \u00e9galement not\u00e9 que l&rsquo;\u00e9tape la plus urgente \u00e9tait de s&rsquo;entendre sur un format standardis\u00e9 pour les PACT. Une fois qu\u2019une norme existe, les d\u00e9tenteurs peuvent commencer l\u2019horodatage imm\u00e9diatement sans attendre un fork Bitcoin.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Cela donne \u00e0 la communaut\u00e9 plus de temps avant qu\u2019une urgence quantique n\u2019impose des d\u00e9cisions pr\u00e9cipit\u00e9es. La proposition n\u2019exige pas que Bitcoin s\u2019engage aujourd\u2019hui sur une ligne d\u2019action sp\u00e9cifique.<\/span><\/p>\n<h2><b>Comment le chemin de sauvetage fonctionnerait sous une future fourche<\/b><\/h2>\n<p><span style=\"font-weight: 400\">Si Bitcoin adopte un jour une suppression des adresses quantiques vuln\u00e9rables, la proposition de Robinson d\u00e9crit un m\u00e9canisme de sauvetage correspondant.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Un d\u00e9tenteur soumettrait une preuve STARK post-quantique montrant qu\u2019il connaissait sa cl\u00e9 priv\u00e9e avant que des ordinateurs quantiques cryptographiquement pertinents n\u2019aient pu la d\u00e9river.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">La preuve serait li\u00e9e \u00e0 une transaction de sauvetage sp\u00e9cifique, emp\u00eachant ainsi la copie ou la redirection. La preuve du sel et du BIP-322 resterait cach\u00e9e tout au long du processus.<\/span><\/p>\n<p><span style=\"font-weight: 400\">La voie de sauvetage n\u00e9cessite que l\u2019engagement du PACT soit ant\u00e9rieur \u00e0 une date limite d\u00e9finie. Ce seuil serait fix\u00e9 avant que les CRQC ne soient consid\u00e9r\u00e9s comme capables de briser la cryptographie \u00e0 cl\u00e9 existante.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Un attaquant qui obtiendrait ult\u00e9rieurement une cl\u00e9 priv\u00e9e par des moyens quantiques ne pourrait pas fabriquer un horodatage ant\u00e9rieur \u00e0 cette coupure. Cette structure s\u00e9pare la propri\u00e9t\u00e9 l\u00e9gitime de l\u2019acc\u00e8s quantique de mani\u00e8re v\u00e9rifiable.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Robinson a reconnu qu&rsquo;il n&rsquo;existe aucune garantie que Bitcoin adoptera un jour ce protocole de sauvetage.<\/span><\/p>\n<p><span style=\"font-weight: 400\"><a href=\"https:\/\/www.livebitcoinnews.com\/solana-ventures-leads-18m-strategic-round-to-expand-multisig-tools\/\">Portefeuilles multisig<\/a>,<\/span><span style=\"font-weight: 400\">les scripts complexes et la prise en charge des portefeuilles mat\u00e9riels n\u00e9cessiteraient chacun une standardisation plus pouss\u00e9e avant que les PACT ne s&rsquo;appliquent universellement. Les d\u00e9tenteurs doivent donc consid\u00e9rer les PACT comme une mesure de pr\u00e9caution plut\u00f4t que comme une protection garantie.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le faible co\u00fbt de l\u2019engagement fait toutefois d\u2019une action pr\u00e9coce un choix raisonnable pour les d\u00e9tenteurs \u00e0 long terme.<\/span><\/p>\n<p><span style=\"font-weight: 400\">Le d\u00e9bat plus large sur la pr\u00e9paration quantique du Bitcoin reste en suspens. La proposition de Robinson ne d\u00e9termine pas si une temporisation est n\u00e9cessaire ou souhaitable.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400\">Au lieu de cela, cela donne \u00e0 la communaut\u00e9 un outil suppl\u00e9mentaire avec lequel travailler si cette d\u00e9cision arrive finalement. Pour les d\u00e9tenteurs dormants confront\u00e9s \u00e0 des risques en mati\u00e8re de confidentialit\u00e9 d\u2019une mani\u00e8re ou d\u2019une autre, cette option suppl\u00e9mentaire peut \u00eatre consid\u00e9rablement importante.<\/span><\/p>\n<p><!-- source_url: https:\/\/www.livebitcoinnews.com\/paradigm-researcher-proposes-quantum-resistant-backup-plan-for-bitcoin\/ --><\/p>\n<p><em>Source : <a href=\"https:\/\/www.livebitcoinnews.com\/paradigm-researcher-proposes-quantum-resistant-backup-plan-for-bitcoin\/\" rel=\"nofollow noopener\" target=\"_blank\">Live Bitcoin News<\/a><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le chercheur de Paradigm, Dan Robinson, a propos\u00e9 des PACT, permettant aux d\u00e9tenteurs de Bitcoin d&rsquo;horodater silencieusement la propri\u00e9t\u00e9 des cl\u00e9s, sans aucun co\u00fbt en cha\u00eene. Les 1,1 million de BTC de Satoshi Nakamoto, d\u2019une valeur de plus de 75 milliards de dollars, se trouvent dans des portefeuilles que les plans de sauvetage quantiques existants [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":3271,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[7],"tags":[715,52,716,536,717,718,719,720],"class_list":["post-3272","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-bitcoin-news","tag-bip-322","tag-bitcoin","tag-bitcoin-security","tag-cryptography","tag-dan-robinson","tag-pacts","tag-paradigm","tag-quantum-computing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Un chercheur de Paradigm propose un plan de sauvegarde r\u00e9sistant aux quantiques pour Bitcoin - 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\/05\/02\/un-chercheur-de-paradigm-propose-un-plan-de-sauvegarde-resistant-aux-quantiques-pour-bitcoin\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Un chercheur de Paradigm propose un plan de sauvegarde r\u00e9sistant aux quantiques pour Bitcoin - France Live Bitcoin News\" \/>\n<meta property=\"og:description\" content=\"Le chercheur de Paradigm, Dan Robinson, a propos\u00e9 des PACT, permettant aux d\u00e9tenteurs de Bitcoin d&rsquo;horodater silencieusement la propri\u00e9t\u00e9 des cl\u00e9s, sans aucun co\u00fbt en cha\u00eene. 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