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A simlpe Merkle Patricia Trie implementation

Project description

Modified Merkle Paticia Trie

MPT is the data structure used in Ethereum as a cryptographically authenticated key-value data storage.

This library is a Python implementation of Modified Merkle Patrica Trie with a very simple interface.


storage = {}
trie = MerklePatriciaTrie(storage)

trie.update(b'do', b'verb')
trie.update(b'dog', b'puppy')
trie.update(b'doge', b'coin')
trie.update(b'horse', b'stallion')

old_root = trie.root()
old_root_hash = trie.root_hash()

print("Root hash is {}".format(old_root_hash.hex()))


print("New root hash is {}".format(trie.root_hash().hex()))

trie_from_old_hash = MerklePatriciaTrie(storage, root=old_root)


except KeyError:
    print('Not accessible in a new trie.')


Install and update using pip:

pip install -U eth_mpt


Documentation can be found on readthedocs.


All the contributors are welcome. If you can make this library better, don't hesitate to :)


python -m unittest

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