Bip39 explained https://collinmmss433.lucialpiazzale.com/from-concept-to-fact-generating-bitcoin-addresses-with-bip39 Although it makes use of BIP32 approach it is possible to however import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There's BIP44 version which some wallet use for that generation of seeds. Vault12 will be the pioneer in copyright inheritance administr... https://thebookmarknight.com/story20183889/bip39-copyright-not-known-factual-statements-about-bip39-word-list-txt-https-dzen-ru-bip39-phrase-com