Bip39 release date https://canvas.instructure.com/eportfolios/3396498/ricardooxtv236/bip39-generator-online-the-very-best-tools-for-secure-pocketbook-development Though it utilizes BIP32 approach you are able to nonetheless import BIP39 seeds into Electrum wallet. Also apart from BIp32 there is BIP44 Model which some wallet use for that era of seeds. BIP39 simplifies essential adminis... https://allyourbookmarks.com/story19860890/bip38-vs-bip39-indicators-on-bip39-ian-coleman-you-should-know-https-x-com-tundra838554