I had created a script that creates a bitcoin private key, public key and address, for checking if all works fine I create one and check the private key on https://walletgenerator.net/, and it outputs a different address, every time I do that my script create a different addres that what walletgenerator returns.

Python script:

import secrets

import hashlib import ecdsa import codecs import base64

class Address(): def init(self): self.private_key = self.create_private_key()
self.public_key = self.private_key_to_public(self.private_key) self.address = self.public_key_to_address(self.public_key)

def create_private_key():
    bits = secrets.randbits(256)
    bits_hex = hex(bits)
    private_key = bits_hex[2:]
    return private_key

def private_key_to_public(private_key):
    verify_key = ecdsa.SigningKey.from_string(codecs.decode(private_key, "hex"), curve=ecdsa.SECP256k1).verifying_key
    key_hex = codecs.encode(verify_key.to_string(), "hex")
    bitcoin_type = b'04'
    public_key = bitcoin_type + key_hex
    return public_key

def public_key_to_address(public_key):
    public_key_bytes = codecs.decode(public_key, "hex")
    sha256_bpk = hashlib.sha256(public_key_bytes)
    sha256_bpk_digest = sha256_bpk.digest()
    ripemd160_bpk = hashlib.new("ripemd160")
    ripemd160_bpk_digest = ripemd160_bpk.digest()
    ripemd160_bpk_hex = codecs.encode(ripemd160_bpk_digest, "hex")
    network_byte = b'00'
    network_bitcoin_public_key = network_byte + ripemd160_bpk_hex

    network_bitcoin_public_key_bytes = codecs.decode(network_bitcoin_public_key, 'hex')
    # Double SHA256 to get checksum
    sha256_nbpk = hashlib.sha256(network_bitcoin_public_key_bytes)
    sha256_nbpk_digest = sha256_nbpk.digest()
    sha256_2_nbpk = hashlib.sha256(sha256_nbpk_digest)
    sha256_2_nbpk_digest = sha256_2_nbpk.digest()
    sha256_2_hex = codecs.encode(sha256_2_nbpk_digest, "hex")
    checksum = sha256_2_hex[:8]

    address_hex = (network_bitcoin_public_key + checksum).decode('utf-8')
    return Address.base58(address_hex)

def base58(address_hex):
    alphabet = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
    b58_string = ''
    # Get the number of leading zeros
    leading_zeros = len(address_hex) - len(address_hex.lstrip('0'))
    # Convert hex to decimal
    address_int = int(address_hex, 16)
    # Append digits to the start of string
    while address_int > 0:
        digit = address_int % 58
        digit_char = alphabet[digit]
        b58_string = digit_char + b58_string
        address_int //= 58
    # Add ‘1’ for each 2 leading zeros
    ones = leading_zeros // 2
    for _ in range(ones):
        b58_string = '1' + b58_string
    return b58_string


foo = Address()
print(foo.private_key, foo.public_key, foo.address)


# 5598c164e8bcec667589267cdaf0f14a6b9399ae0b2a6b10972602a6feaf682d 
# b'04cbeefab6ecfa84f5f120503de4574952f2d1fa5b11b8f6c80a13df02e6512090e6fede6dde3e65256c484162e38 
# 39cf599c3d08a236432e8e307784b741ffca5' 18NFnELB9YpRiEbLMmRLKymYpvxC9yzkC2

And then, if I check the private key 5598c164e8bcec667589267cdaf0f14a6b9399ae0b2a6b10972602a6feaf682d on https://walletgenerator.net/, it returns:

Public address: 1LBLgjq3ntVdb8MqB41rHReWnrKgT41Lwv
Public address compressed: 1LBLgjq3ntVdb8MqB41rHReWnrKgT41Lwv
  • walletgenerator.net is probably a phishing site
    – Tony Sanak
    Commented Jul 13, 2020 at 20:38

1 Answer 1


Your python scripts generate uncompressed public keys, and they seem to calculate correctly.
When I use my own scripts, the results are:

Private key: ---------------------------------------
Private WIF: ---------------------------------------
Public key: ----------------------------------------
pubkeyhash: ----------------------------------------
BTC Address: ---------------------------------------

No difference to your results.

But there seems to be a bug in walletgenerator.net's calculation:
They claim that the uncompressed address was the same as the compressed address, which cannot be correct. Which tab did you use on their site, was it Wallet Details?
As a compressed bitcoin address, I get 1KJKsAzDeH1127x6w8e2xZyzRdvFkiLhme when I use my own scripts, and my Electrum client confirms that result (when I use the private key import feature).

All that does not match the results of walletgenerator.net, so my conclusion is that their site is buggy.

  • Thank you @citizenfu, yes, I tried to check the values on Wallet Details. It's a good thing hear from you that it is not my script what's wrong
    – Stack
    Commented Jul 13, 2020 at 13:29

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