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Blockchain : American Express Latest Blockchain Patent Application to Provide Payment Evidence

Blockchain : American Express Latest Blockchain Patent Application to Provide Payment Evidence


American Express Latest Blockchain Patent Application to Provide Payment Evidence




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What is the Blockchain?



A block chain is a transaction database shared by all nodes participating in a system based on the Bitcoin protocol. A full copy of a currency’s block chain contains every transaction ever executed in the currency. With this information, one can find out how much value belonged to each address at any point in history.

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