Bip39 Words To Numbers Regardless that it uses BIP32 approach it is possible to even now import BIP39 seeds into Electrum wallet. Also besides BIp32 You can find BIP44 Variation which some wallet use for that era of seeds. You'll be able to see the entire source code in standalone, https://www.youtube.com/channel/UCUpxfyTJ0fb78SQ55hU6OCw