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CH12: mining isn't a difficult problem
It's a simple problem whose solution requires many iterations.
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@ -94,9 +94,9 @@ transactions.
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and fees")))((("Proof-of-Work algorithm")))((("mining and consensus",
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"Proof-of-Work algorithm")))Miners receive two types of rewards in
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return for the security provided by mining: new coins created with each
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the block. To earn this reward, miners compete to solve a difficult
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mathematical problem based on a cryptographic hash algorithm. The
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new block (called the _subsidy_), and transaction fees from all the transactions included in
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the block. To earn this reward, miners compete to satisfy a challenge
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based on a cryptographic hash algorithm. The
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solution to the problem, called the Proof-of-Work, is included in the
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new block and acts as proof that the miner expended significant
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computing effort. The competition to solve the Proof-of-Work algorithm
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