Bip39 json https://collinmmss433.lucialpiazzale.com/from-concept-to-fact-generating-bitcoin-addresses-with-bip39 Even though it utilizes BIP32 method you are able to nevertheless import BIP39 seeds into Electrum wallet. Also other than BIp32 There may be BIP44 version which some wallet use for the generation of seeds. BIP32 and BIP44 work alongside one another to incorporate flexibili... https://listfav.com/story22431385/bip39-copyright-bip39-github-an-overview-https-cutt-ly-uryc5rw7