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Build your own Mini-Blockchain!
Adding Blocks to the Chain Securely

Now that we have implemented our Proof-of-Work method, we can now work on adding new blocks securely.

Instructions

1.

In the .add_block() method, calculate the proof_of_work for the new_block. Assign the calculated proof_of_work to a variable named proof before appending the new_block to the blockchain.

Return, in order, the calculated proof and the new_block itself.

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