A blockchain is a decentralized and distributed digital ledger that is used to record transactions in a secure and transparent manner. It is a type of database that stores information across a network of computers rather than on a centralized server.
The data on a blockchain is stored in a block that contains multiple transactions, and each block is connected to the previous one in a chronological and immutable chain. This means that once a block has been added to the chain, it cannot be altered or deleted, making the blockchain an extremely secure and tamper-proof system.
Blockchains are commonly associated with cryptocurrencies like Bitcoin, but they can be used for a wide range of applications, from supply chain management and voting systems to digital identity verification and smart contracts. By removing the need for intermediaries and providing a decentralized and transparent way to store and transfer data, blockchains have the potential to revolutionize many industries and change the way we interact with information and each other.
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