{"id":698,"date":"2017-12-25T18:48:10","date_gmt":"2017-12-25T17:48:10","guid":{"rendered":"https:\/\/blockchain-x.eu\/?p=698"},"modified":"2018-03-06T16:28:20","modified_gmt":"2018-03-06T15:28:20","slug":"les-blockchains-pour-tenir-un-registre-distribue","status":"publish","type":"post","link":"https:\/\/theblockchainforgood.org\/index.php\/2017\/12\/25\/les-blockchains-pour-tenir-un-registre-distribue\/","title":{"rendered":"Les blockchains pour tenir un registre distribu\u00e9"},"content":{"rendered":"<p>Il n\u2019aura fallu que quelques ann\u00e9es pour que de nombreuses entreprises s\u2019emparent de cette invention qu&rsquo;est la blockchain et appliquent \u00e0 divers domaines, outre la banque, ce que le Bitcoin r\u00e9invente pour la monnaie\u00a0: passer d\u2019un fonctionnement centralis\u00e9 \u00e0 une organisation d\u00e9centralis\u00e9e. Chacune de ces entreprises d\u00e9ploie des services bas\u00e9s sur un registre distribu\u00e9 dont la promesse, \u00e0 l\u2019instar de la cryptomonnaie, repose sur l\u2019\u00e9limination des tiers de confiance historiques (notaire, administration, soci\u00e9t\u00e9 de gestion de droit d\u2019auteur\u2026). L\u2019utopie dont est porteur ce mod\u00e8le de base de donn\u00e9es peut s\u2019\u00e9tendre \u00e0 tous les domaines n\u00e9cessitant un organe central ou un tiers de confiance, mais \u00e9galement \u00e0 toute activit\u00e9 pour laquelle des \u00e9changes entre de multiples acteurs induisent de nombreux contr\u00f4les, des probl\u00e8mes de logistique, de lourdeur administrative et parfois de corruption.<\/p>\n<p>Comme aux d\u00e9buts de l\u2019automobile, lorsque la France comptait 155 constructeurs en 1914, de nombreuses exp\u00e9rimentations en cours dans le monde t\u00e9moignent de cet engouement pour les\u00a0<em>blockchains<\/em>, dont l\u2019int\u00e9r\u00eat et l\u2019utilit\u00e9 des services propos\u00e9s sont parfois relatifs. Selon le site\u00a0blockchainfrance.net, les applications se classent en trois cat\u00e9gories\u00a0:<\/p>\n<ul>\n<li>le transfert d\u2019actifs, comme des monnaies \u00e9lectroniques, des titres, des actions ou des obligations ;<\/li>\n<li><strong>la tenue d\u2019un registre, garantissant son int\u00e9grit\u00e9 comme l\u2019\u00e9tablissement d\u2019un cadastre ou la certification de dipl\u00f4mes ;<\/strong><\/li>\n<li>l\u2019ex\u00e9cution automatique de programmes autonomes, appel\u00e9s\u00a0<em>smart contracts<\/em>.<\/li>\n<\/ul>\n<p><strong>La tenue d\u2019un registre<\/strong><\/p>\n<p>Les bases de donn\u00e9es distribu\u00e9es de type\u00a0<em>blockchain<\/em>\u00a0trouvent \u00e9galement, comme domaine de pr\u00e9dilection, la tenue d\u2019un registre infalsifiable et transparent, par exemple, pour l\u2019\u00e9tablissement d\u2019un cadastre ou pour la certification des dipl\u00f4mes.<\/p>\n<p>Au Honduras, le gouvernement a inscrit dans une\u00a0<em>blockchain<\/em>\u00a0publique l\u2019int\u00e9gralit\u00e9 des titres fonciers du territoire afin d\u2019\u00e9viter l\u2019appropriation unilat\u00e9rale des terres par certains, et garantir aux yeux de tous que le cadastre ne soit pas modifi\u00e9 ou alt\u00e9r\u00e9. Au Ghana, une initiative similaire, men\u00e9e par l\u2019ONG Bitland, permet d\u2019enregistrer les actes fonciers associ\u00e9s \u00e0 des coordonn\u00e9es GPS qui, une fois inscrits dans une\u00a0<em>blockchain<\/em>\u00a0appel\u00e9e Bitshare, sont immuables sans un transfert de propri\u00e9t\u00e9 en bonne et due forme. Depuis 2016 en G\u00e9orgie, l\u2019initiative est directement port\u00e9e par le gouvernement, avec le concours de l\u2019entreprise Bitfury. Loin d\u2019\u00ab uberiser \u00bb\u00a0les notaires, ces initiatives prennent forme dans des pays o\u00f9 l\u2019absence de cadastre et de services notari\u00e9s, ainsi qu\u2019un haut niveau de corruption, incitent des start-up \u00e0 proposer ce genre de services ou les \u00c9tats eux-m\u00eames \u00e0 mettre en place un cadastre inviolable.<\/p>\n<p>R\u00e9guli\u00e8rement d\u00e9nonc\u00e9e par les \u00e9coles et par les entreprises, la fraude au dipl\u00f4me serait un fl\u00e9au en constante progression. Pour ne citer qu\u2019un seul cas tristement c\u00e9l\u00e8bre, Gilles Bernheim, grand rabbin de France, a reconnu avoir menti sur son CV, en 2015, en usurpant le titre d\u2019agr\u00e9g\u00e9 de philosophie, mentionn\u00e9 dans toutes ses biographies. Des entreprises, comme Verifdiploma fond\u00e9e en 2000, se sont lanc\u00e9es sur ce cr\u00e9neau d\u2019authentification des dipl\u00f4mes et autres certificats d\u2019un candidat. Une des solutions mises en \u0153uvre par l\u2019ESILV (\u00c9cole sup\u00e9rieure d\u2019ing\u00e9nieurs L\u00e9onard de Vinci) en partenariat avec la soci\u00e9t\u00e9 Paymium en France, ou par l\u2019\u00c9cole d\u2019ing\u00e9nieurs Holberton \u00e0 San Francisco, aux \u00c9tats-Unis, avec la soci\u00e9t\u00e9 Bitproof, a \u00e9t\u00e9 d\u2019enregistrer la signature de chaque dipl\u00f4me dans la\u00a0<em>blockchain<\/em>\u00a0Bitcoin et de tenir ainsi \u00e0 jour le registre de leurs dipl\u00f4m\u00e9s.<\/p>\n<p>Il est, \u00e0 la fois, extr\u00eamement difficile de falsifier un tel registre, qui horodate par ordre chronologique l\u2019ensemble des dipl\u00f4mes \u00e9mis par l\u2019\u00e9cole et tr\u00e8s simple pour une entreprise de v\u00e9rifier dans ce m\u00eame registre si un candidat est bel et bien dipl\u00f4m\u00e9 de ladite \u00e9cole. En France, le minist\u00e8re de l\u2019\u00e9ducation nationale et le rectorat devraient s\u2019emparer du sujet au plus vite afin de moderniser le R\u00e9pertoire national des certifications professionnelles (RNCP), registre des dipl\u00f4mes reconnus par l\u2019\u00c9tat, ce qui permettrait de les distinguer facilement de ceux qui ne le sont pas. Serait en m\u00eame temps cr\u00e9\u00e9e une\u00a0<em>blockchain<\/em>\u00a0publique dans laquelle les \u00e9coles et les universit\u00e9s inscriraient leurs dipl\u00f4m\u00e9s, cette base de donn\u00e9es pouvant \u00eatre consult\u00e9e par tous les employeurs de France ou de l\u2019\u00e9tranger.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Il n\u2019aura fallu que quelques ann\u00e9es pour que de nombreuses entreprises s\u2019emparent de cette invention qu&rsquo;est la blockchain et appliquent \u00e0 divers domaines, outre la banque, ce que le Bitcoin r\u00e9invente pour la monnaie\u00a0: passer d\u2019un fonctionnement centralis\u00e9 \u00e0 une organisation d\u00e9centralis\u00e9e. Chacune de ces entreprises d\u00e9ploie des services bas\u00e9s sur un registre distribu\u00e9 dont [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":699,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"episode_type":"","audio_file":"","podmotor_file_id":"","podmotor_episode_id":"","cover_image":"","cover_image_id":"","duration":"","filesize":"","filesize_raw":"","date_recorded":"","explicit":"","block":"","itunes_episode_number":"","itunes_title":"","itunes_season_number":"","itunes_episode_type":"","footnotes":""},"categories":[34],"tags":[],"class_list":["post-698","post","type-post","status-publish","format-standard","has-post-thumbnail","category-blockchain"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les blockchains pour tenir un registre distribu\u00e9 - Blockchain for Good<\/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:\/\/theblockchainforgood.org\/index.php\/2017\/12\/25\/les-blockchains-pour-tenir-un-registre-distribue\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Les blockchains pour tenir un registre distribu\u00e9 - Blockchain for Good\" \/>\n<meta property=\"og:description\" content=\"Il n\u2019aura fallu que quelques ann\u00e9es pour que de nombreuses entreprises s\u2019emparent de cette invention qu&rsquo;est la blockchain et appliquent \u00e0 divers domaines, outre la banque, ce que le Bitcoin r\u00e9invente pour la monnaie\u00a0: passer d\u2019un fonctionnement centralis\u00e9 \u00e0 une organisation d\u00e9centralis\u00e9e. 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