Bip39. First of all you must retailer it SEPARATELY out of your seed. Acquiring your seed along with your passphrase in a similar place defeats the goal of using a passphrase to begin with. Anybody else who discovers the phrase can steal the bitcoins. It need to be stored magic https://dftsocial.com/story20466623/bip-39-https-linktr-ee-bip39-the-fact-about-bip39-words-that-no-one-is-suggesting