Bip39 Checksum. Before everything you should keep it Independently from your seed. Obtaining your seed and your passphrase in exactly the same locale defeats the purpose of having a passphrase to start with. notify your wallet How to define your coins guiding it with the tree and are explained in https://bookmarkfavors.com/story4398508/bip-39-https-linktr-ee-bip39-bip39-generator-an-overview