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I am having a tough time in understanding how Bitcoin payment verification works:

  1. How is Merkle tree related to Bitcoin blocks?
  2. Had Merkle tree not been there, what would have been the problem?

marked as duplicate by Nick ODell, Dennis Kriechel, Mathias711, David A. Harding, Murch Dec 18 '14 at 15:50

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  • Sherlock, would you mind editing your question so that it only covers a single topic? (For example, editing your question so that it only contains 1 and 2.) It makes information easier to search for. Remember, it's totally fine to have multiple questions on the front page at once. – Nick ODell Oct 22 '14 at 21:28
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    Sure, I won't mind – Holmes.Sherlock Oct 22 '14 at 21:40