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by CJefferson
2978 days ago
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One fundamental problem is that the problem you solve must in some way "sign" or validate the set of transactions you want to add to the Blockchain. You can't just solve anything and say "I did some work". So while we could hypothetically use NP complete problems (although there are several issues which arise to do with consistent difficulty), it's hard to do useful work, because we need the input to be fundamentally linked to the transactions in the block (and the hash of the previous block too) |
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