Bip39 phrase https://atavi.com/share/xbwf7vz16jgof Even though it works by using BIP32 technique you could even now import BIP39 seeds into Electrum wallet. Also apart from BIp32 There is certainly BIP44 Edition which some wallet use for that generation of seeds. Simply how much stability does a passphrase incorporate? A BIP39 passphrase https://maximusbookmarks.com/story20126306/bip39-vs-bip32-bip39-checksum-an-overview-https-cutt-ly-uryc5rw7