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What are Blockchains

A blockchain is a digital ledger that allows for secure, transparent, and decentralized transactions or information sharing among a network of participants. It is essentially a database that stores information across a network of computers, making it difficult to tamper with or manipulate.

Each block in the chain contains a unique cryptographic hash, a timestamp, and a record of all transactions or data included in that block. Once a block is added to the chain, it becomes part of a permanent and unalterable record. This ensures that any changes or updates to the data must be validated by the network and agreed upon by the majority of participants before they can be added to the blockchain.

Blockchains can be used in various applications, from financial transactions to supply chain management to voting systems. The most well-known example of a blockchain is the cryptocurrency Bitcoin, but there are many other blockchain-based projects and platforms that have emerged in recent years.

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