Blockchain is a distributed, immutable ledger technology that records transactions across a network of computers in a secure and transparent way. Each block contains a cryptographic hash of the previous block, creating an unbreakable chain. Beyond cryptocurrencies, blockchain enables decentralized applications, smart contracts, supply chain tracking, digital identity verification, and secure data sharing. In software development, blockchain provides trust, transparency, and immutability for applications requiring secure, tamper-proof record-keeping.
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