Script para generar una direcciones BTC en Python3

privtoaddr.py

from hashlib import new
from binascii import a2b_hex
from collections import deque

# https://bitcoin.stackexchange.com/a/59806
def secp256k1(s):
    G = (55066263022277343669578718895168534326250603453777594175500187360389116729240,
         32670510020758816978083085130507043184471273380659243275938904335757337482424)
    N = 115792089237316195423570985008687907852837564279074904382605163141518161494337
    P = 2**256 - 2**32 - 2**9 - 2**8 - 2**7 - 2**6 - 2**4 - 1

    sk = int(s, 16)

    def add(p, q):
        px, py = p
        qx, qy = q
        if p == q:
            lam = (3 * px * px) * pow(2 * py, P - 2, P)
        else:
            lam = (qy - py) * pow(qx - px, P - 2, P)
        rx = lam**2 - px - qx
        ry = lam * (px - rx) - py
        return rx % P, ry % P

    ret = None
    for i in range(256):
        if sk & (1 << i):
            if ret is None:
                ret = G
            else:
                ret = add(ret, G)
        G = add(G, G)

    return '04' + '{:064x}'.format(ret[0]) + '{:064x}'.format(ret[1])


# https://github.com/joeblackwaslike/base58check
def b58check(val):
    charset = b'123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
    output = b''
    p, acc = 1, 0

    pad_len = len(val)
    val = val.lstrip(b'\0')
    pad_len -= len(val)

    for char in deque(reversed(val)):
        acc += p * char
        p = p << 8

    while acc:
        acc, idx = divmod(acc, len(charset))
        output = charset[idx:idx+1] + output

    prefix = bytes([charset[0]]) * pad_len
    return prefix + output


def doubleSHA256(s):
    return new('sha256', new('sha256', a2b_hex(s)).digest()).hexdigest()


def hash160(s):
    return new('ripemd160', new('sha256', a2b_hex(s)).digest()).hexdigest()


def main():
    privkey = new('sha256', b'probando el algoritmo').hexdigest()

    # (CHAUCHA PUBKEY = 58 AND SECRET = d8)
    b58_PUBKEY_ADDRESS = '00'
    b58_SECRET_KEY = '80'

    checksum = doubleSHA256(b58_SECRET_KEY + privkey)[:8]
    wif = b58check(a2b_hex(b58_SECRET_KEY + privkey + checksum))

    pubkey = secp256k1(privkey)
    pubkeyhash = hash160(pubkey)

    checksum = doubleSHA256(b58_PUBKEY_ADDRESS + pubkeyhash)[:8]
    addr = b58check(a2b_hex(b58_PUBKEY_ADDRESS + pubkeyhash + checksum))

    print('Private Key (WIF): %s' % wif.decode('utf-8'))
    print('BTC Address: %s' % addr.decode('utf-8'))


if __name__ == '__main__':
    main()