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Bitcoin vient de recevoir une importante mise \u00e0 jour. Intitul\u00e9e Taproot, cette mise \u00e0 niveau tr\u00e8s attendue permet d'am\u00e9liorer la s\u00e9curit\u00e9 et la confidentialit\u00e9 des transactions sur la blockchain tout en r\u00e9duisant le co\u00fbt des transferts. Surtout, elle facilite la cr\u00e9ation de contrats intelligents,\u00a0similaire \u00e0 ceux du r\u00e9seau Ethereum, sur le r\u00e9seau Bitcoin. Explications.\u00a0<\/strong><\/p>\n

\"bitcoin<\/p>\n

Ce dimanche 14 novembre 2021, le protocole Bitcoin<\/a> a eu droit \u00e0 une nouvelle mise \u00e0 jour majeure. Baptis\u00e9e Taproot<\/strong>, cette mise \u00e0 niveau est la plus importante du r\u00e9seau depuis l'activation de Segregated Witness (SegWit) en 2017. En d\u00e9veloppement depuis 2018, cette mise \u00e0 jour remplace l\u2019algorithme de signature ECDSA par Schnorr, un algorithme de signature<\/strong> dont le fonctionnement est tr\u00e8s diff\u00e9rent. “Satoshi <\/i>(NDLR : le cr\u00e9ateur du Bitcoin) avait envisag\u00e9 d\u2019utiliser les signatures de Schnorr, mais elles \u00e9taient alors prot\u00e9g\u00e9es par un brevet”,\u00a0<\/i>explique Theo Mogenet, professeur en technologie blockchain sur son compte Twitter.<\/p>\n

Taproot \u00e9tait attendu par tous les utilisateurs de Bitcoin. En effet, contrairement \u00e0 Segwit, Taproot a re\u00e7u le soutien de la plupart des d\u00e9fenseurs du Bitcoin. N\u00e9anmoins, tous les noeuds Bitcoin (les ordinateurs qui constituent le r\u00e9seau) n'ont pas encore appliqu\u00e9 la mise \u00e0 niveau. Pour appliquer les changements de Taproot, il faut installer la mise \u00e0 niveau vers Bitcoin Core 21.1<\/strong>. Pour m\u00e9moire, Bitcoin Core est le logiciel open source de\u00a0r\u00e9f\u00e9rence\u00a0pour les n\u0153uds qui constituent le r\u00e9seau Bitcoin.\u00a0Le d\u00e9ploiement de Taproot sur l'int\u00e9gralit\u00e9 du r\u00e9seau pourrait prendre plusieurs ann\u00e9es. De plus, il faut aussi que les portefeuilles Bitcoin se mettre \u00e0 prendre en charge les nouveaut\u00e9s de Taproot.<\/p>\n

Sur le m\u00eame th\u00e8me :\u00a0Vous pouvez acheter du Bitcoin dans certains supermarch\u00e9s aux \u00c9tats-Unis<\/a><\/strong><\/p>\n