Bip39 Standard. At first you should retail store it SEPARATELY from your seed. Possessing your seed and also your passphrase in exactly the same place defeats the purpose of having a passphrase in the first place. Entropy is an advanced attribute. Your mnemonic may be insecure if this attribute is https://mysocialport.com/story4169564/ian-coleman-bip39-https-linktr-ee-bip39-bip39-words-secrets