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Once a transaction is confirmed, it is placed in a block after the confirmation. All of the blocks are chained together to create a permanent history of every transaction.
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This article originally appeared on Engadget at https://www.engadget.com/apps/block-the-parent-of-square-and-cash-app-is-laying-off-over-4000-people-223343068.html?src=rss
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