proof-of-work (PoW)

proof-of-work (PoW)

Satoshi states that the integrity of the chain of blocks is protected by a requirement to contribute computing power. This proof that the computer is working and putting forth effort, known as proof-of-work, is necessary to build blocks into the future, as well as to modify the past should anyone attempt to do so. The longest chain represents the majority decision, or in other words the greatest proof-of-work.

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