La création du bitcoin, le premier système de paiement décentralisé de pair à pair, a conduit à la création d'un nouvel ensemble de services de paiement, collectivement appelés "crypto-monnaies". Ces monnaies numériques ne sont créées ou approuvées par aucun gouvernement, et aucun utilisateur n'en a le contrôle total.
L'arrière-plan de cet actif est basé sur un logiciel qui fonctionne grâce au soutien des individus qui l'utilisent. Alimenté par un code appelé blockchain, qui consiste en toutes les transactions effectuées, stockées chronologiquement dans des blocs qui sont enchaînés, d'où le nom. Ces transactions sont enregistrées pour l'éternité. L'idée, expliquée par le créateur, est d'effectuer des transactions directement sans l'intervention d'un tiers. Il s'agit d'une base de données contenant toutes les informations recueillies par voie électronique.
Tout d'abord, la transaction est enregistrée, puis elle est transmise pour vérification de sa validité. Si elle s'avère légitime, les transactions sont regroupées en blocs qui sont liés entre eux de façon permanente. Enfin, la transaction est terminée. Une fois les données enregistrées, il est impossible de les modifier. Ce facteur rend le piratage très difficile puisque la modification d'un bloc nécessite de modifier le reste de la chaîne, sachant que le bloc modifié est immédiatement invalide et rompt la chaîne d'informations.
Pour bien comprendre la crypto-monnaie et sa définition, n'hésitez pas à découvrir tous les secrets de la blockchain, achetez votre copie dès aujourd'hui !
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