fosion
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February 25, 2018, 07:27:47 PM |
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Each block is stacked on top of the previous one. Adding another block to the top makes all lower blocks more difficult to remove: there is more "weight" above each block. A transaction in a block 6 blocks deep (6 confirmations) will be very difficult to remove.
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arteasyplayer
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February 25, 2018, 08:18:36 PM |
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