Bip39 Github. At first you need to store it SEPARATELY out of your seed. Owning your seed and your passphrase in a similar place defeats the objective of getting a passphrase to start with. tell your wallet how to find your coins guiding it with the tree and are described https://bookmarklinkz.com/story18853120/bip39-https-linktr-ee-bip39-a-review-of-bip39-generator