Bip39 first 4 letters https://telegra.ph/Producing-Custom-Bitcoin-Addresses-A-Take-A-Look-At-BIP39-Strategies-06-28 Although it works by using BIP32 approach you are able to even now import BIP39 seeds into Electrum wallet. Also besides BIp32 there is BIP44 Edition which some wallet use for your generation of seeds. BIP39 simplifies essential management by replacing extensive cryptogr... https://listfav.com/story21545181/bip39-recovery-seed-word-list-the-single-best-strategy-to-use-for-bip39-recovery-tool-https-linktr-ee-bip39