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write code to accomplish the following in python: a. Alex sends 30 bitcoin to Jeff gets recorded as a block on the blockchain b.

write code to accomplish the following in python: a. Alex sends 30 bitcoin to Jeff gets recorded as a block on the blockchain b. Jeff sends 15 bitcoin to Mary gets recorded as a block on the blockchain c. Verify if the blockchain is correct d. You are a hacker and you modify the second block in the blockchain to contain a negative amount -10 e. Verify the blockchain

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