Bip39 release date https://hubpages.com/@lefwenuuyr Even though it utilizes BIP32 system you could however import BIP39 seeds into Electrum wallet. Also apart from BIp32 There may be BIP44 Variation which some wallet use for that generation of seeds. The BIP39 word list is usually a set of two,048 cautiously chosen words https://top100bookmark.com/story20627270/bip39-seed-phrase-generator-bip39-passphrase-generator-options-https-x-com-tundra838554