Bip39 validator https://blogfreely.net/travenmdoq/create-your-own-distinct-bip39-mnemonic-expression-with-python-scripts Regardless that it works by using BIP32 process you may continue to import BIP39 seeds into Electrum wallet. Also other than BIp32 There is certainly BIP44 Variation which some wallet use for that technology of seeds. BIP39 improves wallet protection by making backu... https://jsbin.com/titaniseko