Bip39 rust crate https://collinmmss433.lucialpiazzale.com/from-concept-to-fact-generating-bitcoin-addresses-with-bip39 BIP85: A more recent proposal allowing the deterministic derivation of many BIP39 mnemonic seeds from the master seed. Due to the cryptographic layout of BIP-39, a weak passphrase would not reduce the security of the other wallets or assist reveal the seed words. but ... https://bookmarkusers.com/story19666880/bip39-passphrase-github-helping-the-others-realize-the-advantages-of-bip39-passphrase-https-cutt-ly-uryc5rw7