Bip39 mnemonic github https://josueaqpi312.huicopper.com/leading-5-online-bip39-generators-for-easy-copyright-security Though it employs BIP32 system you could continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There exists BIP44 version which some wallet use with the technology of seeds. This extra complexity boosts the threat of misplacing the passphrase, and... https://getidealist.com/story21824521/bip39-russian-helping-the-others-realize-the-advantages-of-bip39-recovery-tool-https-cutt-ly-uryc5rw7