Bip39 mnemonic github https://andersonsaeu988.iamarrows.com/bip39-generator-online-the-best-devices-for-secure-wallet-creation Although it takes advantage of BIP32 system it is possible to still import BIP39 seeds into Electrum wallet. Also besides BIp32 There is certainly BIP44 Edition which some wallet use with the era of seeds. BIP39 solves this by using human-readable seed phrases... https://followbookmarks.com/story20615660/bip39-recovery-seeds-bip39-npm-no-further-a-mystery-https-t-me-bip39-chat