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The miner of a cryptocurrency has to demonstrate whether their machine committed effort to the process of approving a transaction in order to be eligible for the reward for their mining efforts.
In order to ensure that sufficient effort is put in before a block can be correctly hashed, a variable has been included into the procedure of hashing a transaction.
Because having a hashed block demonstrates that the miner put in effort and is deserving of a reward, this concept is referred to as “proof of work.”
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