Bip39 compatible wallet http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf Though it employs BIP32 technique you can still import BIP39 seeds into Electrum wallet. Also besides BIp32 There's BIP44 version which some wallet use to the technology of seeds. It's very simple — if you do not worry about copyright inheritance, nobody else will — not https://bookmarkilo.com/story20342464/generate-bip39-passphrase-5-simple-statements-about-bip39-converter-explained-https-t-me-bip39-chat