{"id":105381,"date":"2023-04-07T11:13:00","date_gmt":"2023-04-07T11:13:00","guid":{"rendered":"https:\/\/fr.cryptonews.com\/?p=109801"},"modified":"2023-06-26T11:07:33","modified_gmt":"2023-06-26T11:07:33","slug":"comment-vitalik-buterin-envisage-levolution-de-la-technologie-zk-zero-knowledge-pour-lecosysteme-ethereum-eth","status":"publish","type":"post","link":"https:\/\/cryptonews.com\/fr\/news\/comment-vitalik-buterin-envisage-levolution-de-la-technologie-zk-zero-knowledge-pour-lecosysteme-ethereum-eth\/","title":{"rendered":"Comment Vitalik Buterin envisage l\u2019\u00e9volution de la technologie ZK (zero knowledge) pour l&#8217;\u00e9cosyst\u00e8me Ethereum (ETH) ?"},"content":{"rendered":"<figure class=\"image\"><img decoding=\"async\" src=\"https:\/\/cimg.co\/news\/109801\/266080\/adobestock-486010541-edit.jpeg\" alt=\"\" srcset=\"https:\/\/cimg.co\/news\/109801\/266080\/responsive-images\/adobestock-486010541-edit___media_library_original_1000_545.jpeg 1000w, https:\/\/cimg.co\/news\/109801\/266080\/responsive-images\/adobestock-486010541-edit___media_library_original_900_491.jpeg 900w, https:\/\/cimg.co\/news\/109801\/266080\/responsive-images\/adobestock-486010541-edit___media_library_original_720_392.jpeg 720w, https:\/\/cimg.co\/news\/109801\/266080\/responsive-images\/adobestock-486010541-edit___media_library_original_600_327.jpeg 600w, https:\/\/cimg.co\/news\/109801\/266080\/responsive-images\/adobestock-486010541-edit___media_library_original_300_164.jpeg 300w\" sizes=\"100vw\" width=\"1000\" class=\"content-img\"><figcaption>Source : Adobe<\/figcaption><\/figure><p style=\"text-align:justify;\">La technologie <i>Zero-knowledge<\/i> est consid&eacute;r&eacute;e comme un &eacute;l&eacute;ment essentiel pour la r&eacute;solution des probl&egrave;mes de scalabilit&eacute; de la blockchain Ethereum. Le d&eacute;but de 2023 a &eacute;t&eacute; marqu&eacute; par le lancement public de nombreuses solutions de couche 2 bas&eacute;es sur cette technologie : Arbitrum, Polygon, zkSync Era&hellip; Dans un <a href=\"https:\/\/vitalik.eth.limo\/general\/2023\/03\/31\/zkmulticlient.html\" rel=\"nofollow\">billet de blog<\/a>, le co-fondateur d&#8217;Ethereum, <strong>Vitalik Buterin<\/strong>, a expliqu&eacute; qu&#8217;il souhaitait voir &eacute;voluer l&rsquo;utilisation de technologie Zero-knowledge au niveau des machines virtuelles Ethereum (EVM, <i>Ethereum Virtual Machines<\/i>) et non pas uniquement sur les <i>rollups<\/i>. Selon Buterin, la cr&eacute;ation de zk-EVM sur la premi&egrave;re couche d&rsquo;Ethereum pourrait acc&eacute;l&eacute;rer le processus de v&eacute;rification sur la blockchain de base.&nbsp;<\/p><p style=\"text-align:justify;\">Buterin a expliqu&eacute; qu&rsquo;Ethereum avait &eacute;t&eacute; d&eacute;velopp&eacute; avec une &#8220;philosophie multi-clients&#8221; pour assurer la d&eacute;centralisation du protocole. Deux types de clients fonctionnent actuellement sur la blockchain Ethereum : les clients dits de &laquo; consensus &raquo; et &laquo; ex&eacute;cution &raquo;. Le client de consensus impl&eacute;mente la preuve de participation pour s&#8217;assurer que les n&oelig;uds du r&eacute;seau parviennent &agrave; un accord, tandis que le client d&#8217;ex&eacute;cution identifie les nouvelles transactions diffus&eacute;es sur le r&eacute;seau, les ex&eacute;cute en EVM standard et d&eacute;tient une copie du dernier &eacute;tat de la blockchain. Les zk-EVM serait le troisi&egrave;me type de client du r&eacute;seau.<\/p><p style=\"text-align:justify;\">L&rsquo;id&eacute;e de Buterin est n&eacute;e d&rsquo;un constat simple : le r&eacute;seau Ethereum fait aujourd&#8217;hui face &agrave; un probl&egrave;me diff&eacute;rent, qu&#8217;aucune mise &agrave; l&#8217;&eacute;chelle de la couche 2 ne peut r&eacute;soudre &agrave; elle seule. En effet, la couche 1 est difficile &agrave; v&eacute;rifier, au point que peu d&#8217;utilisateurs ex&eacute;cutent leur propre n&oelig;ud. Au lieu de cela, la plupart des utilisateurs font simplement confiance &agrave; des fournisseurs tiers.<\/p><h3 style=\"text-align:justify;\">Une mise en oeuvre qui se heurte &agrave; des difficult&eacute;s<\/h3><p style=\"text-align:justify;\">Gr&acirc;ce aux zk-EVM, la fonction de la couche 1 serait d&#8217;&ecirc;tre une chambre de compensation pour les protocoles de la couche 2 qui facilite occasionnellement les transferts de fonds importants entre eux. Cette approche pr&eacute;sente toutefois des faiblesses importantes : de nombreuses applications bas&eacute;es sur la couche 1 deviendraient alors &#8220;&eacute;conomiquement non viables&#8221; et les transferts de fonds &#8211; d&#8217;une valeur de quelques centaines de dollars ou moins &#8211; pourraient rester &#8220;bloqu&eacute;s&#8221; si les frais de gaz devenaient trop importants.<\/p><p style=\"text-align:justify;\">La seconde option serait d&rsquo;utiliser un ZK-EVM de type 1 (enti&egrave;rement &eacute;quivalent &agrave; Ethereum) pour v&eacute;rifier l&#8217;ex&eacute;cution EVM d&#8217;un bloc Ethereum (couche 1). La cr&eacute;ation de ce ZK-EVM serait difficile : aujourd&#8217;hui, les ZK-EVM mettent entre quelques minutes &agrave; plusieurs heures pour v&eacute;rifier les blocs Ethereum, et la g&eacute;n&eacute;ration de preuves en temps r&eacute;el n&eacute;cessiterait une ou plusieurs (i) am&eacute;liorations d&#8217;Ethereum lui-m&ecirc;me pour supprimer les incompatibilit&eacute;s, (ii ) des gains d&#8217;efficacit&eacute; importants avec du mat&eacute;riel sp&eacute;cialis&eacute;, et (iii) des am&eacute;liorations architecturales.&nbsp;<\/p><p style=\"text-align:justify;\">Selon Buterin, une structure ouverte multi ZK-EVM&nbsp;serait la plus appropri&eacute;e pour cette seconde option : diff&eacute;rents clients disposeraient de diff&eacute;rentes impl&eacute;mentations de ZK-EVM, et chaque client devra attendre une preuve compatible avec sa propre impl&eacute;mentation avant d&#8217;accepter un bloc comme valide. Buterin privil&eacute;gie cette approche car elle n&#8217;abandonnerait pas le paradigme &#8220;multi-clients&#8221;, et une infrastructure zk-EVM ouverte garantirait &eacute;galement que de nouveaux clients pourraient &ecirc;tre d&eacute;velopp&eacute;s, ce qui d&eacute;centraliserait davantage Ethereum au niveau de la couche de base.<\/p>","protected":false},"excerpt":{"rendered":"<p>Source : AdobeLa technologie Zero-knowledge est consid&eacute;r&eacute;e comme un &eacute;l&eacute;ment essentiel pour la r&eacute;solution des probl&egrave;mes de scalabilit&eacute; de la blockchain Ethereum. Le d&eacute;but de 2023 a &eacute;t&eacute; marqu&eacute; par le lancement public de nombreuses solutions de couche 2 bas&eacute;es sur cette technologie : Arbitrum, Polygon, zkSync Era&hellip; Dans un billet de blog, le co-fondateur [&hellip;]<\/p>\n","protected":false},"author":35,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,1],"tags":[51,49],"editors":[1620],"sponsored_companies":[],"class_list":["post-105381","post","type-post","status-publish","format-standard","hentry","category-ethereum-news","category-news","tag-ethereum","tag-vitalik-buterin","editors-corinne-r"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.1.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ethereum (ETH) : Vitalik Buterin passe en revue l\u2019\u00e9volution de la technologie ZK (zero knowledge)<\/title>\n<meta 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