Bip32 and bip39 https://send.now/zchzg5fu4oku Though it makes use of BIP32 method you could even now import BIP39 seeds into Electrum wallet. Also besides BIp32 There's BIP44 Variation which some wallet use to the era of seeds. How much safety does a passphrase incorporate? A BIP39 passphrase substantially enhances your Bitcoin https://socialmediatotal.com/story5509060/bip39-mnemonic-checksum-helping-the-others-realize-the-advantages-of-bip39-recovery-tool-https-cutt-ly-uryc5rw7