Bip39 standard https://blogfreely.net/travenmdoq/create-your-own-distinct-bip39-mnemonic-expression-with-python-scripts You then choose to permit BIP-39 passphrase assist as part of your components wallet and stamp the passphrase(s) over a hexagonal stainless-steel rod and retail store the rod inside of a different geographical location to your 24-word seed backup so that you can: It ... https://writeablog.net/ipennywpzc/the-ultimate-overview-to-offline-bip39-generators-remain-secure