Bip39 Seed. The seed phrase might be transformed to the quantity that's made use of given that the seed integer to a deterministic wallet that generates all the key pairs used in the wallet. Understand that using a passphrase also has some tradeoffs, so be sure to understand the implications https://directorydepo.com/listings639436/bip39-python-https-linktr-ee-bip39-bip39-passphrase-generator-fundamentals-explained