The blockchain explained simply: how does it work?
The blockchain is often presented as a technological revolution capable of transforming sectors as varied as finance, logistics, or even art. Yet, behind this somewhat mysterious term lies a concept that is relatively simple to understand. Whether you are a beginner investor in cryptocurrencies or simply curious, this article offers you a clear and concrete explanation of the blockchain, its functioning, its advantages, but also its limits.
What is the blockchain? An accessible definition
The blockchain, literally "chain of blocks," is a decentralized and secure technology for storing and transmitting information. It works like a large digital ledger, public or private, where all transactions or data are recorded in a chronological and indelible manner. Each "block" contains a set of information, as well as a cryptographic link to the previous block, forming a continuous chain.
Unlike traditional centralized databases, the blockchain relies on a network of computers (called nodes) that collectively validate transactions. This decentralized architecture guarantees transparency, security, and the absence of intermediaries.