Bip39 standalone https://www.bitsdujour.com/profiles/wWbptt Although it uses BIP32 strategy you are able to even now import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 version which some wallet use with the era of seeds. It's simple — if you don't concern yourself with copyright inheritance, nobody https://moodjhomedia.com/story3045068/bip39-json-5-tips-about-bip39-checksum-you-can-use-today-https-cutt-ly-uryc5rw7