{"id":15078,"date":"2025-11-08T12:00:00","date_gmt":"2025-11-08T11:00:00","guid":{"rendered":"https:\/\/www.blog.bim.finance\/?p=15078"},"modified":"2025-11-07T15:55:58","modified_gmt":"2025-11-07T14:55:58","slug":"brouillon-expliquer-blockchain-debutant-simple","status":"publish","type":"post","link":"https:\/\/www.blog.bim.finance\/en\/brouillon-expliquer-blockchain-debutant-simple\/","title":{"rendered":"Comment expliquer la blockchain simplement \u00e0 un d\u00e9butant ?"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"15078\" class=\"elementor elementor-15078\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-59ef728 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"59ef728\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ac3876e\" data-id=\"ac3876e\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-349516f elementor-widget elementor-widget-heading\" data-id=\"349516f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Qui a dit que d\u00e9crire le concept de blockchain \u00e9tait complexe ?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-04aaafa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"04aaafa\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-025bb26\" data-id=\"025bb26\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2e14dd9 elementor-widget elementor-widget-text-editor\" data-id=\"2e14dd9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Imaginez un carnet qu&rsquo;on passerait de main en main dans une classe. Sur ce carnet, chacun \u00e9crit les transactions : \u00ab Alice donne 10 euros \u00e0 Bob \u00bb, \u00ab Bob donne 5 euros \u00e0 Charlie \u00bb. Le truc, c&rsquo;est que personne ne peut effacer ou modifier ce qui a \u00e9t\u00e9 \u00e9crit. Quand une nouvelle page se remplit, elle est scell\u00e9e et reli\u00e9e \u00e0 la page pr\u00e9c\u00e9dente. Tout le monde a une copie identique de ce carnet. Si quelqu&rsquo;un essaie de tricher en changeant quelque chose sur sa version, c&rsquo;est imm\u00e9diatement visible car son carnet ne correspond plus aux autres. C&rsquo;est \u00e7a la blockchain.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f8307c6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f8307c6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6514ab6\" data-id=\"6514ab6\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-25e2f79 elementor-widget elementor-widget-image\" data-id=\"25e2f79\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.lafinancepourtous.com\/wp-content\/thumbnails\/uploads\/2024\/11\/blockchain_privee800-tt-width-800-height-520-fill-0-crop-0-bgcolor-eeeeee.png?w=800&#038;ssl=1\" title=\"\" alt=\"Illustration blockchain - La Finance pour Tous\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Illustration blockchain - La Finance pour Tous<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-12d0973 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"12d0973\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-a9702eb\" data-id=\"a9702eb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-267f366 elementor-widget elementor-widget-text-editor\" data-id=\"267f366\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>C&rsquo;est un carnet num\u00e9rique que plein d&rsquo;ordinateurs gardent en m\u00eame temps. Au lieu qu&rsquo;une seule personne (comme une banque) contr\u00f4le l&rsquo;argent, ce sont tous les participants d&rsquo;un r\u00e9seau qui v\u00e9rifient les transactions ensemble. Personne ne peut voler, personne ne peut tricher sans que tout le monde s&rsquo;en aper\u00e7oive. C&rsquo;est comme un syst\u00e8me de confiance collectif. Le Bitcoin en est le meilleur exemple : une monnaie qui fonctionne sans banque, juste gr\u00e2ce \u00e0 la blockchain.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-1ea621e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"1ea621e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-ecebf37\" data-id=\"ecebf37\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4941076 elementor-widget elementor-widget-heading\" data-id=\"4941076\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Pourquoi c'est r\u00e9volutionnaire<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-c5612f6 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"c5612f6\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-f889baf\" data-id=\"f889baf\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-88719d4 elementor-widget elementor-widget-text-editor\" data-id=\"88719d4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">La blockchain change tout parce qu&rsquo;elle \u00e9limine le besoin d&rsquo;interm\u00e9diaires. Habituellement, si tu veux transf\u00e9rer de l&rsquo;argent \u00e0 quelqu&rsquo;un dans un autre pays, tu dois passer par les banques. Elles prennent des frais, \u00e7a prend du temps. Avec la blockchain, tu peux envoyer de l&rsquo;argent directement, 24\/24, 7\/7, sans interm\u00e9diaire, sans permission. C&rsquo;est transparent aussi : chaque transaction est visible dans la cha\u00eene de blocs. Tout le monde peut v\u00e9rifier que les comptes sont corrects. Plus personne ne peut dire \u00ab fais-moi confiance \u00bb et puis s&rsquo;enfuir avec ton argent.<\/p><p class=\"p1\">De plus, elle rend la confiance math\u00e9matique : elle est garantie par la cryptographie et la d\u00e9centralisation. Cela ouvre des possibilit\u00e9s folles. Des contrats qui s&rsquo;ex\u00e9cutent sans avocat. Des <a href=\"https:\/\/www.blog.bim.finance\/en\/election-presidentielle-blockchain\/\">votes<\/a> impossibles \u00e0 truquer. Des cha\u00eenes d&rsquo;approvisionnement tra\u00e7ables du d\u00e9but \u00e0 la fin. Tout syst\u00e8me o\u00f9 tu dois v\u00e9rifier quelque chose peut potentiellement utiliser la blockchain. C&rsquo;est pour cela que tant d&rsquo;entreprises s&rsquo;y int\u00e9ressent. Ce n&rsquo;est pas juste une mode. C&rsquo;est une r\u00e9elle transformation de comment organiser la confiance dans la soci\u00e9t\u00e9.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-376bd44 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"376bd44\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5293215\" data-id=\"5293215\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-b1f21d3 elementor-widget elementor-widget-heading\" data-id=\"b1f21d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Les limitations \u00e0 comprendre<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-54c79b3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"54c79b3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8dfe6cd\" data-id=\"8dfe6cd\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5e8f177 elementor-widget elementor-widget-text-editor\" data-id=\"5e8f177\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p class=\"p1\">Mais la blockchain n&rsquo;est pas magique. Elle est lente par rapport aux syst\u00e8mes bancaires traditionnels. Bitcoin traite quelques milliers de transactions par jour quand Visa en traite des milliards. Elle consomme beaucoup d&rsquo;\u00e9lectricit\u00e9 pour certaines blockchains comme Bitcoin (bien que d&rsquo;autres, comme Ethereum depuis 2022, utilisent l&rsquo;\u00e9nergie de mani\u00e8re bien plus efficace). Elle est aussi d\u00e9finitive : une fois une transaction confirm\u00e9e, tu ne peux pas l&rsquo;annuler. Si tu envoies de l&rsquo;argent \u00e0 la mauvaise adresse, c&rsquo;est perdu \u00e0 jamais. Il n&rsquo;y a pas de service client qui peut te dire \u00ab attendez, je le r\u00e9cup\u00e8re \u00bb.<\/p><p class=\"p1\">Il y a aussi la question de la compr\u00e9hension et de l&rsquo;adoption. Beaucoup de gens ne comprennent pas encore comment \u00e7a marche, donc ils ont peur. Et ils ont raison d&rsquo;\u00eatre prudents : les arnaqueurs utilisent la blockchain aussi. Mais avec le temps, \u00e0 mesure que la technologie s&rsquo;am\u00e9liore et que les r\u00e9gulations \u00e9mergent, ces limites diminuent. La blockchain n&rsquo;est que le d\u00e9but d&rsquo;une r\u00e9volution qui change comment nous pensons la confiance, la propri\u00e9t\u00e9 et les contrats dans le monde num\u00e9rique.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6ea23e8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6ea23e8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-6821502\" data-id=\"6821502\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1d5359f elementor-widget elementor-widget-text-editor\" data-id=\"1d5359f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Sources<\/strong> :\u00a0<\/p><ul><li style=\"list-style-type: none\"><ul><li><a href=\"https:\/\/www.blog.bim.finance\/en\/assurances-decentralisees-prochaine-revolution-oubliee\/\">BIM Blog &#8211; Les assurances d\u00e9centralis\u00e9es<\/a><\/li><li><a href=\"https:\/\/www.blog.bim.finance\/en\/blockchain-et-finances-publiques\/\">BIM Blog &#8211; Blockchain et d\u00e9penses publiques<\/a><\/li><\/ul><\/li><\/ul><p>\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>La blockchain peut sembler complexe. Pourtant, avec les bonnes m\u00e9taphores et les bons mots, n&rsquo;importe qui peut comprendre ce qu&rsquo;elle est et pourquoi elle change les r\u00e8gles du jeu.<\/p>","protected":false},"author":18,"featured_media":15095,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mo_disable_npp":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[16,26],"tags":[],"ppma_author":[145],"class_list":["post-15078","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lexique","category-premiers-pas"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Comment expliquer la blockchain simplement \u00e0 un d\u00e9butant ? - BIM Blog<\/title>\n<meta name=\"description\" content=\"Vous n&#039;arrivez pas \u00e0 d\u00e9crire la blockchain pour un novice ? 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