Bip39 dart https://www.slideserve.com/lewarthbfp/getting-a-bip39-phrase-in-python-a-comprehensive-tutorial While it works by using BIP32 strategy you can nevertheless import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There may be BIP44 version which some wallet use for the technology of seeds. The amount of security does a passphrase include? A BIP39 passphrase apprec... https://social4geek.com/story5474180/bip39-typescript-an-unbiased-view-of-bip39-2048-words-https-x-com-tundra838554