请用英文简单解释什么是区块链，并强调其去中心化的特点。
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Blockchain is a digital ledger technology that records transactions across multiple computers in a way that prevents alterations once the data is recorded. The standout feature of blockchain is its decentralization, meaning it operates without a central authority, ensuring transparency, security, and resistance to censorship through the use of cryptographic principles and a distributed network of nodes.
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