Bip39 spec https://www.bitsdujour.com/profiles/wWbptt Even though it uses BIP32 process you are able to continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There exists BIP44 Variation which some wallet use for the era of seeds. In past times, bitcoin along with other copyright wallets were created and https://nanobookmarking.com/story20695372/bip39-rust-crate-helping-the-others-realize-the-advantages-of-bip39-recovery-tool-https-dzen-ru-bip39-phrase-com