Bip39 format https://ameblo.jp/generate-bip39brooks/entry-12913353546.html While it takes advantage of BIP32 process it is possible to however import BIP39 seeds into Electrum wallet. Also besides BIp32 There is certainly BIP44 Edition which some wallet use with the technology of seeds. Subscribe to our weekly mailing list and acquire latest copyright information, sources https://bookmarkeasier.com/story19922051/bip39-compatible-wallet-bip39-github-an-overview-https-dzen-ru-bip39-phrase-com