@ongxinping6
Blockchain is a distributed ledger technology that records transactions securely and transparently. Each block contains a list of transactions, and once verified, it is added to the chain in chronological order. The decentralized nature of blockchain ensures no single entity controls the data. Cryptography ensures security, making tampering nearly impossible. Blockchain is the foundation for cryptocurrencies like Bitcoin and Ethereum but also has applications in supply chain, healthcare, and voting systems.
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