Bip-39 https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view an entirely new wallet, for every possible passphrase. By default, the Coldcard employs an empty string because the passphrase. On the next menu, it is possible to enter a passphrase by deciding on individual BIP39 is like the chance to “go through” and realize the seed phrase... https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view