Bip39 regex https://josuejnub341.image-perth.org/the-future-of-copyright-security-why-bip39-issues-for-every-person Despite the fact that it works by using BIP32 technique you can even now import BIP39 seeds into Electrum wallet. Also besides BIp32 there is BIP44 Variation which some wallet use for the era of seeds. The amount of stability does a passphrase insert? A BIP39 passphrase https://www.bitsdujour.com/profiles/wWbptt