प्रोग्राम की सुविधाएँ · चिह्नित Merkle मूल निर्माण

import hashlib

def merkle_root(leaves):
    if type(leaves) is not list or not 1 <= len(leaves) <= 64 or any(type(x) is not bytes or len(x) > 4096 for x in leaves):
        raise ValueError("merkle.leaves")
    level = [hashlib.sha256(b"\x00"+x).digest() for x in leaves]
    while len(level) > 1:
        if len(level) % 2:
            level.append(level[-1])
        level = [hashlib.sha256(b"\x01"+level[i]+level[i+1]).digest() for i in range(0, len(level), 2)]
    return level[0].hex()