def quaternion_inverse(quaternion):
    return quaternion_conjugate(quaternion) / numpy.dot(quaternion, quaternion)
Take a master private or public extended key in standard format
dataset/ETHPy150Open omangin/multimodal/multimodal/lib/transformations.py/quaternion_inverse--crossover with--dataset/ETHPy150Open blockcypher/blockcypher-python/blockcypher/utils.py/coin_symbol_from_mkey