A blockchain is a digital ledger comprised of so-called “blocks.” Every piece of new information uploaded to the digital ledger is a block having a set of data. Once these blocks are linked – that is, every time that new information is uploaded via a block – it becomes part of the digital ledger for forever and all time; the blocks cannot be edited, deleted or modified, even by the company or person who initially created the blockchain. Because the history and genesis of blockchain data cannot be altered or deleted, blockchains are a valuable tool for identifying the provenance of an item and tracking the path from its original source to its ultimate destination.
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