Conceptual animation representing a blockchain, showing the links in a chain made up of binary digits (zeroes and ones). A blockchain is an encrypted public ledger to which activity relating to an asset is added. The ledger is not stored centrally, meaning that anyone can confirm the existence of a transaction involving the asset. Blockchains are best known for their use in cryptocurrencies, where they record the payments and purchases made by individual bitcoins, for example.
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