Bip39-Standalone. It is very simple — if you do not stress about copyright inheritance, no one else will — not your computer software or hardware wallet vendors, not your exchanges, and never your wealth administrators. Entropy is a complicated function. Your mnemonic might be insecure if this function is utilized https://tvsocialnews.com/story4522653/bip39-passphrase-https-linktr-ee-bip39-getting-my-bip39-wallets-to-work