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Difficulty is a parameter in mining that Bitcoin and other cryptocurrencies use to keep the average time between blocks steady as the network's hash power changes.

The Bitcoin network difficulty is the measure of how difficult it is to find a new block compared to the easiest it can ever be. It is recalculated every 2016 blocks to a value such that, on average, one block is added every ten minutes.

See also: block, block height, mining

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