Bip39 buffer is not defined https://jaspermuxp089.yousher.com/top-5-online-bip39-generators-for-effortless-copyright-security Even though it uses BIP32 approach you could nonetheless import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There's BIP44 version which some wallet use with the generation of seeds. Because of the cryptographic structure of BIP-39, a weak passph... https://e-bookmarks.com/story6194829/bip39-word-list-how-many-words-the-smart-trick-of-bip39-wallet-that-no-one-is-discussing-https-dzen-ru-bip39-phrase-com