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Add simple blockchain mining algorithm with PoW #14411

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5 errors

Process completed with exit code 1.

blockchain/simple_blockchain.py:95:21: UP006 Use `list` instead of `List` for type annotation

blockchain/simple_blockchain.py:60:46: UP006 Use `tuple` instead of `Tuple` for type annotation

blockchain/simple_blockchain.py:14:1: UP035 `typing.Tuple` is deprecated, use `tuple` instead

blockchain/simple_blockchain.py:14:1: UP035 `typing.List` is deprecated, use `list` instead