Bip39 crate https://files.fm/u/2eemhhak2q#design Although it makes use of BIP32 approach you could continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There exists BIP44 Model which some wallet use to the generation of seeds. BIP39 is like the opportunity to “go through” and understand the seed phrase. https://www.plurk.com/p/3hf2syltjx