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    As a distributed ledger technology (DLT), a blockchain is a digital ledger that can create an immutable record of transactions. A blockchain typically stores data linearly and chronologically across multiple computers. This structure allows for increased security and immutability since it would be difficult for a person or entity to tamper with the data. For example, the Bitcoin blockchain is a decentralized, public ledger that contains transactional information. Users can verify that transactions have occurred simply by looking at the publicly available data on the Bitcoin blockchain network. Adding new transactions to the chain employ a hash function, timestamp and digital signature, linking the transactions together and makes it difficult to modify data. As a result, blockchains ensure the accuracy and integrity of the chain.