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im a total noob on bitcoin'ism and i've done some readings on how they work, roughly. Here's a question, since bitcoins mining is done thru bruteforce hack, wouldnt this be susceptible to hackers/crackers/govs or whatever you call them. from what i read, a block=transaction thus bitcoins mining is cracking the transaction, how is this even secure? and as we know it, anything that is built by human can be broken.