Blockchain-based solution for transaction history audit

Suitable for both centralized and decentralized exchanges
Automatically generates transaction hash tree and stores it in public blockchain
Provides data required for performance track record audit of asset and portfolio managers, traders or hedge-funds

Design
Diagram
Sample code

              
tree = MerkleTree()
# raw bytes or str bytes
tree.add_node('00')
tree.add_node('01')
tree.add_node('02')

# extra node is added during make to provide a perfect binary tree
tree.make()

tree.get_root()
'8633f3f58bd5719152d1f244ad09616dbad359515721e8a59ad0eb1823ae3531'
tree.get_proof(2) # node index
[{'right': 'c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'}, {'left': '49d03a195e239b52779866b33024210fc7dc66e9c2998975c0aa45c1702549d5'}]

proof = [{'right': 'c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470'}, {'left': '49d03a195e239b52779866b33024210fc7dc66e9c2998975c0aa45c1702549d5'}]
root = '8633f3f58bd5719152d1f244ad09616dbad359515721e8a59ad0eb1823ae3531'
tree.validate_proof(proof, '02', root)
True

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