Bip39 mnemonic https://jaspermuxp089.yousher.com/top-5-online-bip39-generators-for-effortless-copyright-security Even though it uses BIP32 system you'll be able to still import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 Edition which some wallet use for your generation of seeds. Because of the cryptographic structure of BIP-39, a weak passphrase would not https://enrollbookmarks.com/story20116871/bip39-offline-new-step-by-step-map-for-bip39-word-list-txt-https-dzen-ru-bip39-phrase-com