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... What is Bitcoin? Review The Block and the Chain in depth Proof-of-work Algorithm Bitcoin Mining Bitcoin problems and weakness - The Truth about 51% Attack Bitcoin Soft fork vs Hard fork Bitcoin. .. rewards more evenly 20 Bitcoin Mining 21 Bitcoin Mining 22 Bitcoin Problems ● ● ● ● ● Bitcoin is hard to understand, and requires users to be well versed in computer security Bitcoin transactions... protects the block chain from tampering ● Bitcoin use SHA -25 6 as the Proof-of-Work hashing algorithm 11 Proof-of-work ● ● The target is a 25 6-bit number that all Bitcoin clients share The lower the