{"id":13499,"date":"2025-07-29T08:59:00","date_gmt":"2025-07-29T06:59:00","guid":{"rendered":"https:\/\/www.blog.bim.finance\/?p=13499"},"modified":"2025-07-28T11:26:19","modified_gmt":"2025-07-28T09:26:19","slug":"l3-avenir-infrastructure-blockchain","status":"publish","type":"post","link":"https:\/\/www.blog.bim.finance\/en\/l3-avenir-infrastructure-blockchain\/","title":{"rendered":"Les Layers 3 sont-elles l\u2019avenir de l\u2019infrastructure blockchain ?"},"content":{"rendered":"
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Alors que les Layers 2 (L2) commencent \u00e0 peine \u00e0 s\u2019imposer comme des piliers de la scalabilit\u00e9 d\u2019Ethereum, un nouveau concept \u00e9merge d\u00e9j\u00e0 : les blockchains de Layers 3, ou L3.<\/p>

Ces infrastructures visent \u00e0 pousser encore plus loin la personnalisation, la performance et la sp\u00e9cialisation de la blockchain. Mais sont-elles vraiment n\u00e9cessaires ? Et peuvent-elles changer durablement le paysage Web3 ?<\/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

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Que sont les Layers 3 ?<\/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
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Les Layers 3 sont des couches construites au-dessus des blockchains L2, qui sont elles-m\u00eames pos\u00e9es sur Ethereum. Pour faire simple, imaginez une pile : Ethereum est la base, les L2 viennent dessus pour rendre le r\u00e9seau plus rapide et moins cher, et les L3 ajoutent une couche encore plus sp\u00e9cialis\u00e9e pour certains usages bien pr\u00e9cis.<\/p>

Par exemple, une Layer 3 peut \u00eatre con\u00e7ue uniquement pour un jeu vid\u00e9o, une appli de finance d\u00e9centralis\u00e9e ou un projet d\u2019intelligence artificielle. Ces L3 utilisent souvent des technologies d\u00e9j\u00e0 existantes comme OP Stack (Optimism<\/a>) ou ZK Stack (zkSync<\/a>), ce qui leur permet de fonctionner de fa\u00e7on s\u00e9curis\u00e9e tout en \u00e9tant tr\u00e8s personnalisables.<\/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

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Quels sont les avantages des L3 ?<\/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
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\n\t\t\t\t\t\t\t\t\t\t\"R\u00f4le\t\t\t\t\t\t\t\t\t\t\t
R\u00f4le des Layers L3 - Starkware<\/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
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Les L3 permettent un niveau de personnalisation tr\u00e8s \u00e9lev\u00e9. Un projet peut contr\u00f4ler enti\u00e8rement les r\u00e8gles de sa blockchain. Que ce soit les frais de gas, les m\u00e9canismes de gouvernance et m\u00eame l\u2019interop\u00e9rabilit\u00e9 avec d\u2019autres applications. Cela permet une exp\u00e9rience utilisateur plus fluide, rapide et adapt\u00e9e \u00e0 des besoins tr\u00e8s sp\u00e9cifiques.<\/p>

Elles sont aussi un terrain d\u2019exp\u00e9rimentation pour les projets souhaitant se d\u00e9ployer sans avoir \u00e0 supporter l\u2019ensemble du poids de l\u2019infrastructure blockchain traditionnelle. Leur co\u00fbt de d\u00e9ploiement est souvent plus bas, et elles peuvent profiter de la s\u00e9curit\u00e9 h\u00e9rit\u00e9e des L2 et de L1.<\/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

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Quels sont les risques ou limites ?<\/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
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\n\t\t\t\t\t\t\t\t\t\t\"Orbs\t\t\t\t\t\t\t\t\t\t\t
Orbs Network : exemple parmi les Layers 3<\/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
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L\u2019empilement des couches pose une question essentielle : celle de la complexit\u00e9. Chaque couche suppl\u00e9mentaire introduit des risques de fragmentation, de latence et d\u00e9pendance \u00e0 l\u2019\u00e9cosyst\u00e8me sous-jacent. En cons\u00e9quence, cela peut se traduire par des exp\u00e9riences moins intuitives pour un utilisateur final.<\/p>

De plus, certaines voix dans l\u2019\u00e9cosyst\u00e8me estiment que les L3 ne sont pas toujours n\u00e9cessaires. Vitalik Buterin, le cofondateur d\u2019Ethereum, a lui-m\u00eame remis en question l\u2019int\u00e9r\u00eat des L3 en dehors de cas extr\u00eamement sp\u00e9cifiques.<\/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

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Qui exp\u00e9rimente d\u00e9j\u00e0 avec les L3 ?<\/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
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Coinbase le fait \u00e0 travers ses Base Appchains, des blockchains L3 d\u00e9di\u00e9es pouvant \u00eatre cr\u00e9\u00e9es par n\u2019importe quel d\u00e9veloppeur via leur plateforme. Ces Appchains permettent une personnalisation pouss\u00e9e de l\u2019exp\u00e9rience utilisateur et une optimisation du gas.<\/p>

D\u2019autres acteurs comme zkSync avec les ZK Stack Chains, ou Starknet avec les \u00ab\u00a0L3 rollups\u00a0\u00bb, explorent \u00e9galement ces voies. L\u2019id\u00e9e est de cr\u00e9er des \u00e9cosyst\u00e8mes modulaires, adapt\u00e9s \u00e0 des besoins toujours plus granulaires.<\/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

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Une piste prometteuse, mais encore \u00e0 construire<\/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
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Les Layers 3 repr\u00e9sentent un champ d\u2019exploration encore jeune, mais prometteur. Leur r\u00f4le dans l\u2019infrastructure future du Web3 pourrait \u00eatre d\u00e9terminant si les projets arrivent \u00e0 surmonter les d\u00e9fis de complexit\u00e9 et d\u2019adoption.<\/p>

Dans un contexte o\u00f9 la personnalisation devient un facteur cl\u00e9, les L3 pourraient bien \u00eatre l\u2019\u00e9tape suivante vers une blockchain plus accessible, plus performante et plus cibl\u00e9e.<\/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":"

Les Layers 3 promettent de pousser plus loin la personnalisation et la performance de la blockchain. Mais ajoutent-elles de la valeur ou seulement de la complexit\u00e9 ?<\/p>","protected":false},"author":18,"featured_media":13542,"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-13499","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-lexique","category-premiers-pas"],"yoast_head":"\nLes Layers 3 sont-elles l\u2019avenir de l\u2019infrastructure blockchain ? - BIM Blog<\/title>\n<meta name=\"description\" content=\"Que sont les Layers 3 ? Sont-elles vraiment utiles ou seulement une complexit\u00e9 suppl\u00e9mentaire ? 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