Standalone Mnemonic Code Converter

mnemonica.py

from bip_utils import Bip39SeedGenerator, Bip44, Bip44Coins, Bip44Changes
from bip_utils.bip.bip44_base import Bip44Base

# Mnemonic and passphrase (use a secure method to generate and store these)
mnemonic = "aerobic exercise mechanic clerk bus mother pact pipe easily file job control"
bip39_passphrase = ""  # Optional, can be empty

# Derivation path parameters
account_index = 0
change_type = Bip44Changes.CHAIN_EXT
address_index = 0

# Generate seed from mnemonic
seed_bytes = Bip39SeedGenerator(mnemonic).Generate(passphrase)

# Initialize BIP-44
bip44_mst = Bip44.FromSeed(seed_bytes, Bip44Coins.ETHEREUM)

# Get the derived account, change, and address keys
bip44_acc = bip44_mst.Purpose().Coin().Account(account_index)
bip44_change = bip44_acc.Change(change_type)
bip44_addr = bip44_change.AddressIndex(address_index)

# Get private key
private_key = bip44_addr.PrivateKey().Raw().ToHex()

print(f"Derived Private Key: {private_key}")