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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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samy245
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May 20, 2018, 06:28:07 AM |
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I joined airdrop telegram and twitter Telegram username: @Npsamy3Npsamy Twitter username: @Npsamy
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apollong88
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May 20, 2018, 06:37:41 AM |
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good coin Tele: @thaiquan37 twiter: @thaiquan37
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brittwind
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May 20, 2018, 06:53:31 AM |
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#Joined Airdrop Twitter profile url:https://twitter.com/brittwind560 Telegram user: @brittwind560
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