re: Trying to understand blockchain by making one! VIEW POST

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The 0000 characters are called the difficulty. I chose those characters. They do not mean anything in particular, I could have picked anything. In Bitcoin for example, there is a concept called mining, where you have to 'solve' this difficulty by finding a valid hash. If the answer is found too quickly, the difficulty will be augmented for the next blocks( say 5 zeroes instead of 4 ).

I'll make another article to explain the connexion between hashes and data, I am getting a few questions about this :)

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