Generate a 12-word mnemonic and first receive addr

generate_mnemonic_and_addr.py

from embit import bip32, bip39, script
from embit.slip39 import secure_randint
from embit.wordlists.bip39 import WORDLIST

for i in range(0, 100):
    mnemonic = []
    for j in range(0, 11):
        # note: `secure_randint` is inclusive of the end of the range
        mnemonic.append(WORDLIST[secure_randint(0, 2047)])
    mnemonic.append(WORDLIST[0])

    # Convert the resulting mnemonic to bytes, but we `ignore_checksum` validation
    # because we assume it's incorrect since we either let the user select their own
    # final word OR we injected the 0000 word from the wordlist.
    mnemonic_bytes = bip39.mnemonic_to_bytes(" ".join(mnemonic), ignore_checksum=True)

    # This function will convert the bytes back into a mnemonic, but it will also
    # calculate the proper checksum bits while doing so. For a 12-word seed it will just
    # overwrite the last 4 bits from the above result with the checksum; for a 24-word
    # seed it'll overwrite the last 8 bits.
    mnemonic = bip39.mnemonic_from_bytes(mnemonic_bytes).split()

    seed = bip39.mnemonic_to_seed(" ".join(mnemonic))
    root = bip32.HDKey.from_seed(seed)
    xprv = root.derive("m/84'/0'/0'")
    xpub = xprv.to_public()

    # generate first receive addr
    pubkey = xpub.derive([0,0]).key
    addr = script.p2wpkh(pubkey).address()

    print(f"""{" ".join(mnemonic)}, {addr}""")